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-rw-r--r--erts/emulator/sys/common/erl_check_io.c23
-rw-r--r--erts/emulator/sys/common/erl_check_io.h6
-rw-r--r--erts/emulator/sys/common/erl_os_monotonic_time_extender.c88
-rw-r--r--erts/emulator/sys/common/erl_os_monotonic_time_extender.h65
-rw-r--r--erts/emulator/sys/common/erl_poll.c221
-rw-r--r--erts/emulator/sys/common/erl_poll.h6
-rw-r--r--erts/emulator/sys/ose/erl_poll.c69
-rw-r--r--erts/emulator/sys/ose/sys.c4
-rw-r--r--erts/emulator/sys/unix/erl_unix_sys.h181
-rw-r--r--erts/emulator/sys/unix/sys.c494
-rw-r--r--erts/emulator/sys/unix/sys_float.c4
-rw-r--r--erts/emulator/sys/unix/sys_time.c751
-rw-r--r--erts/emulator/sys/win32/erl_poll.c60
-rw-r--r--erts/emulator/sys/win32/erl_win_sys.h88
-rw-r--r--erts/emulator/sys/win32/sys.c167
-rw-r--r--erts/emulator/sys/win32/sys_time.c389
16 files changed, 2205 insertions, 411 deletions
diff --git a/erts/emulator/sys/common/erl_check_io.c b/erts/emulator/sys/common/erl_check_io.c
index 0051b45b31..7be17d20bb 100644
--- a/erts/emulator/sys/common/erl_check_io.c
+++ b/erts/emulator/sys/common/erl_check_io.c
@@ -1590,9 +1590,9 @@ ERTS_CIO_EXPORT(erts_check_io_interrupt)(int set)
void
ERTS_CIO_EXPORT(erts_check_io_interrupt_timed)(int set,
- erts_short_time_t msec)
+ ErtsMonotonicTime timeout_time)
{
- ERTS_CIO_POLL_INTR_TMD(pollset.ps, set, msec);
+ ERTS_CIO_POLL_INTR_TMD(pollset.ps, set, timeout_time);
}
void
@@ -1600,9 +1600,12 @@ ERTS_CIO_EXPORT(erts_check_io)(int do_wait)
{
ErtsPollResFd *pollres;
int pollres_len;
- SysTimeval wait_time;
+ ErtsMonotonicTime timeout_time;
int poll_ret, i;
erts_aint_t current_cio_time;
+ ErtsSchedulerData *esdp = erts_get_scheduler_data();
+
+ ASSERT(esdp);
restart:
@@ -1612,12 +1615,10 @@ ERTS_CIO_EXPORT(erts_check_io)(int do_wait)
#endif
/* Figure out timeout value */
- if (do_wait) {
- erts_time_remaining(&wait_time);
- } else { /* poll only */
- wait_time.tv_sec = 0;
- wait_time.tv_usec = 0;
- }
+ timeout_time = (do_wait
+ ? erts_check_next_timeout_time(esdp->timer_wheel,
+ ERTS_SEC_TO_MONOTONIC(10*60))
+ : ERTS_POLL_NO_TIMEOUT /* poll only */);
/*
* No need for an atomic inc op when incrementing
@@ -1640,14 +1641,12 @@ ERTS_CIO_EXPORT(erts_check_io)(int do_wait)
erts_smp_atomic_set_nob(&pollset.in_poll_wait, 1);
- poll_ret = ERTS_CIO_POLL_WAIT(pollset.ps, pollres, &pollres_len, &wait_time);
+ poll_ret = ERTS_CIO_POLL_WAIT(pollset.ps, pollres, &pollres_len, timeout_time);
#ifdef ERTS_ENABLE_LOCK_CHECK
erts_lc_check_exact(NULL, 0); /* No locks should be locked */
#endif
- erts_deliver_time(); /* sync the machine's idea of time */
-
#ifdef ERTS_BREAK_REQUESTED
if (ERTS_BREAK_REQUESTED)
erts_do_break_handling();
diff --git a/erts/emulator/sys/common/erl_check_io.h b/erts/emulator/sys/common/erl_check_io.h
index d01297d55c..71355965aa 100644
--- a/erts/emulator/sys/common/erl_check_io.h
+++ b/erts/emulator/sys/common/erl_check_io.h
@@ -47,8 +47,8 @@ void erts_check_io_async_sig_interrupt_nkp(void);
#endif
void erts_check_io_interrupt_kp(int);
void erts_check_io_interrupt_nkp(int);
-void erts_check_io_interrupt_timed_kp(int, erts_short_time_t);
-void erts_check_io_interrupt_timed_nkp(int, erts_short_time_t);
+void erts_check_io_interrupt_timed_kp(int, ErtsMonotonicTime);
+void erts_check_io_interrupt_timed_nkp(int, ErtsMonotonicTime);
void erts_check_io_kp(int);
void erts_check_io_nkp(int);
void erts_init_check_io_kp(void);
@@ -65,7 +65,7 @@ int erts_check_io_max_files(void);
void erts_check_io_async_sig_interrupt(void);
#endif
void erts_check_io_interrupt(int);
-void erts_check_io_interrupt_timed(int, erts_short_time_t);
+void erts_check_io_interrupt_timed(int, ErtsMonotonicTime);
void erts_check_io(int);
void erts_init_check_io(void);
diff --git a/erts/emulator/sys/common/erl_os_monotonic_time_extender.c b/erts/emulator/sys/common/erl_os_monotonic_time_extender.c
new file mode 100644
index 0000000000..f3633b7267
--- /dev/null
+++ b/erts/emulator/sys/common/erl_os_monotonic_time_extender.c
@@ -0,0 +1,88 @@
+/*
+ * %CopyrightBegin%
+ *
+ * Copyright Ericsson AB 2015. All Rights Reserved.
+ *
+ * The contents of this file are subject to the Erlang Public License,
+ * Version 1.1, (the "License"); you may not use this file except in
+ * compliance with the License. You should have received a copy of the
+ * Erlang Public License along with this software. If not, it can be
+ * retrieved online at http://www.erlang.org/.
+ *
+ * Software distributed under the License is distributed on an "AS IS"
+ * basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
+ * the License for the specific language governing rights and limitations
+ * under the License.
+ *
+ * %CopyrightEnd%
+ */
+
+#ifdef HAVE_CONFIG_H
+# include "config.h"
+#endif
+#include "erl_os_monotonic_time_extender.h"
+
+#ifdef USE_THREADS
+
+static void *os_monotonic_time_extender(void *vstatep)
+{
+ ErtsOsMonotonicTimeExtendState *state = (ErtsOsMonotonicTimeExtendState *) vstatep;
+ long sleep_time = state->check_interval*1000;
+ Uint32 (*raw_os_mtime)(void) = state->raw_os_monotonic_time;
+ Uint32 last_msb = 0;
+
+ while (1) {
+ Uint32 msb = (*raw_os_mtime)() & (((Uint32) 1) << 31);
+
+ if (msb != last_msb) {
+ int ix = ((int) (last_msb >> 31)) & 1;
+ Uint32 xtnd = (Uint32) erts_atomic32_read_nob(&state->extend[ix]);
+ erts_atomic32_set_nob(&state->extend[ix], (erts_aint32_t) (xtnd + 1));
+ last_msb = msb;
+ }
+ erts_milli_sleep(sleep_time);
+ }
+
+ erl_exit(ERTS_ABORT_EXIT, "os_monotonic_time_extender thread terminating");
+ return NULL;
+}
+
+static erts_tid_t os_monotonic_extender_tid;
+#endif
+
+void
+erts_init_os_monotonic_time_extender(ErtsOsMonotonicTimeExtendState *statep,
+ Uint32 (*raw_os_monotonic_time)(void),
+ int check_seconds)
+{
+#ifdef USE_THREADS
+ statep->raw_os_monotonic_time = raw_os_monotonic_time;
+ erts_atomic32_init_nob(&statep->extend[0], (erts_aint32_t) 0);
+ erts_atomic32_init_nob(&statep->extend[1], (erts_aint32_t) 0);
+ statep->check_interval = check_seconds;
+
+#else
+ statep->extend[0] = (Uint32) 0;
+ statep->extend[1] = (Uint32) 0;
+ statep->last_msb = (ErtsMonotonicTime) 0;
+#endif
+}
+
+void
+erts_late_init_os_monotonic_time_extender(ErtsOsMonotonicTimeExtendState *statep)
+{
+#ifdef USE_THREADS
+ erts_thr_opts_t thr_opts = ERTS_THR_OPTS_DEFAULT_INITER;
+ thr_opts.detached = 1;
+ thr_opts.suggested_stack_size = 4;
+
+#if 0
+ thr_opts.name = "os_monotonic_time_extender";
+#endif
+
+ erts_thr_create(&os_monotonic_extender_tid,
+ os_monotonic_time_extender,
+ (void*) statep,
+ &thr_opts);
+#endif
+}
diff --git a/erts/emulator/sys/common/erl_os_monotonic_time_extender.h b/erts/emulator/sys/common/erl_os_monotonic_time_extender.h
new file mode 100644
index 0000000000..0f9e7c86ae
--- /dev/null
+++ b/erts/emulator/sys/common/erl_os_monotonic_time_extender.h
@@ -0,0 +1,65 @@
+/*
+ * %CopyrightBegin%
+ *
+ * Copyright Ericsson AB 2015. All Rights Reserved.
+ *
+ * The contents of this file are subject to the Erlang Public License,
+ * Version 1.1, (the "License"); you may not use this file except in
+ * compliance with the License. You should have received a copy of the
+ * Erlang Public License along with this software. If not, it can be
+ * retrieved online at http://www.erlang.org/.
+ *
+ * Software distributed under the License is distributed on an "AS IS"
+ * basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
+ * the License for the specific language governing rights and limitations
+ * under the License.
+ *
+ * %CopyrightEnd%
+ */
+
+#ifndef ERL_OS_MONOTONIC_TIME_EXTENDER_H__
+#define ERL_OS_MONOTONIC_TIME_EXTENDER_H__
+
+#include "sys.h"
+#include "erl_threads.h"
+
+typedef struct {
+#ifdef USE_THREADS
+ Uint32 (*raw_os_monotonic_time)(void);
+ erts_atomic32_t extend[2];
+ int check_interval;
+#else
+ Uint32 extend[2];
+ ErtsMonotonicTime last_msb;
+#endif
+} ErtsOsMonotonicTimeExtendState;
+
+#ifdef USE_THREADS
+# define ERTS_CHK_EXTEND_OS_MONOTONIC_TIME(S, RT) ((void) 1)
+# define ERTS_EXTEND_OS_MONOTONIC_TIME(S, RT) \
+ ((((ErtsMonotonicTime) \
+ erts_atomic32_read_nob(&((S)->extend[((int) ((RT) >> 31)) & 1]))) \
+ << 32) \
+ + (RT))
+#else
+# define ERTS_CHK_EXTEND_OS_MONOTONIC_TIME(S, RT) \
+ do { \
+ Uint32 msb__ = (RT) & (((Uint32) 1) << 31); \
+ if (msb__ != (S)->last_msb) { \
+ int ix__ = ((int) ((S)->last_msb >> 31)) & 1; \
+ (S)->extend[ix__]++; \
+ (S)->last_msb = msb; \
+ } \
+ } while (0)
+# define ERTS_EXTEND_OS_MONOTONIC_TIME(S, RT) \
+ ((((ErtsMonotonicTime) (S)->extend[((int) ((RT) >> 31)) & 1]) << 32) + (RT))
+#endif
+
+void
+erts_init_os_monotonic_time_extender(ErtsOsMonotonicTimeExtendState *statep,
+ Uint32 (*raw_os_monotonic_time)(void),
+ int check_seconds);
+void
+erts_late_init_os_monotonic_time_extender(ErtsOsMonotonicTimeExtendState *statep);
+
+#endif
diff --git a/erts/emulator/sys/common/erl_poll.c b/erts/emulator/sys/common/erl_poll.c
index aa412a20c8..f4d4a85ca4 100644
--- a/erts/emulator/sys/common/erl_poll.c
+++ b/erts/emulator/sys/common/erl_poll.c
@@ -320,7 +320,7 @@ struct ErtsPollSet_ {
#if defined(USE_THREADS) || ERTS_POLL_ASYNC_INTERRUPT_SUPPORT
erts_atomic32_t wakeup_state;
#endif
- erts_smp_atomic32_t timeout;
+ erts_atomic64_t timeout_time;
#ifdef ERTS_POLL_COUNT_AVOIDED_WAKEUPS
erts_smp_atomic_t no_avoided_wakeups;
erts_smp_atomic_t no_avoided_interrupts;
@@ -384,6 +384,26 @@ static void check_poll_status(ErtsPollSet ps);
static void print_misc_debug_info(void);
#endif
+static ERTS_INLINE void
+init_timeout_time(ErtsPollSet ps)
+{
+ erts_atomic64_init_nob(&ps->timeout_time,
+ (erts_aint64_t) ERTS_MONOTONIC_TIME_MAX);
+}
+
+static ERTS_INLINE void
+set_timeout_time(ErtsPollSet ps, ErtsMonotonicTime time)
+{
+ erts_atomic64_set_relb(&ps->timeout_time,
+ (erts_aint64_t) time);
+}
+
+static ERTS_INLINE ErtsMonotonicTime
+get_timeout_time(ErtsPollSet ps)
+{
+ return (ErtsMonotonicTime) erts_atomic64_read_acqb(&ps->timeout_time);
+}
+
#define ERTS_POLL_NOT_WOKEN 0
#define ERTS_POLL_WOKEN -1
#define ERTS_POLL_WOKEN_INTR 1
@@ -1993,44 +2013,153 @@ save_poll_result(ErtsPollSet ps, ErtsPollResFd pr[], int max_res,
}
}
+static ERTS_INLINE ErtsMonotonicTime
+get_timeout(ErtsPollSet ps,
+ int resolution,
+ ErtsMonotonicTime timeout_time)
+{
+ ErtsMonotonicTime timeout, save_timeout_time;
+
+ if (timeout_time == ERTS_POLL_NO_TIMEOUT) {
+ save_timeout_time = ERTS_MONOTONIC_TIME_MIN;
+ timeout = 0;
+ }
+ else {
+ ErtsMonotonicTime diff_time, current_time;
+ current_time = erts_get_monotonic_time();
+ diff_time = timeout_time - current_time;
+ if (diff_time <= 0) {
+ save_timeout_time = ERTS_MONOTONIC_TIME_MIN;
+ timeout = 0;
+ }
+ else {
+ save_timeout_time = current_time;
+ switch (resolution) {
+ case 1000:
+ /* Round up to nearest even milli second */
+ timeout = ERTS_MONOTONIC_TO_MSEC(diff_time - 1) + 1;
+ if (timeout > (ErtsMonotonicTime) INT_MAX)
+ timeout = (ErtsMonotonicTime) INT_MAX;
+ save_timeout_time += ERTS_MSEC_TO_MONOTONIC(timeout);
+ break;
+ case 1000000:
+ /* Round up to nearest even micro second */
+ timeout = ERTS_MONOTONIC_TO_USEC(diff_time - 1) + 1;
+ save_timeout_time += ERTS_USEC_TO_MONOTONIC(timeout);
+ break;
+ case 1000000000:
+ /* Round up to nearest even nano second */
+ timeout = ERTS_MONOTONIC_TO_NSEC(diff_time - 1) + 1;
+ save_timeout_time += ERTS_NSEC_TO_MONOTONIC(timeout);
+ break;
+ default:
+ ERTS_INTERNAL_ERROR("Invalid resolution");
+ timeout = 0;
+ save_timeout_time = 0;
+ break;
+ }
+ }
+ }
+ set_timeout_time(ps, save_timeout_time);
+ return timeout;
+}
+
+#if ERTS_POLL_USE_SELECT
+
static ERTS_INLINE int
-check_fd_events(ErtsPollSet ps, SysTimeval *tv, int max_res)
+get_timeout_timeval(ErtsPollSet ps,
+ SysTimeval *tvp,
+ ErtsMonotonicTime timeout_time)
+{
+ ErtsMonotonicTime timeout = get_timeout(ps,
+ 1000*1000,
+ timeout_time);
+
+ if (!timeout) {
+ tvp->tv_sec = 0;
+ tvp->tv_usec = 0;
+
+ return 0;
+ }
+ else {
+ ErtsMonotonicTime sec = timeout/(1000*1000);
+ tvp->tv_sec = sec;
+ tvp->tv_usec = timeout - sec*(1000*1000);
+
+ ASSERT(tvp->tv_sec >= 0);
+ ASSERT(tvp->tv_usec >= 0);
+ ASSERT(tvp->tv_usec < 1000*1000);
+
+ return !0;
+ }
+
+}
+
+#endif
+
+#if ERTS_POLL_USE_KQUEUE
+
+static ERTS_INLINE int
+get_timeout_timespec(ErtsPollSet ps,
+ struct timespec *tsp,
+ ErtsMonotonicTime timeout_time)
+{
+ ErtsMonotonicTime timeout = get_timeout(ps,
+ 1000*1000*1000,
+ timeout_time);
+
+ if (!timeout) {
+ tsp->tv_sec = 0;
+ tsp->tv_nsec = 0;
+ return 0;
+ }
+ else {
+ ErtsMonotonicTime sec = timeout/(1000*1000*1000);
+ tsp->tv_sec = sec;
+ tsp->tv_nsec = timeout - sec*(1000*1000*1000);
+
+ ASSERT(tsp->tv_sec >= 0);
+ ASSERT(tsp->tv_nsec >= 0);
+ ASSERT(tsp->tv_nsec < 1000*1000);
+
+ return !0;
+ }
+}
+
+#endif
+
+static ERTS_INLINE int
+check_fd_events(ErtsPollSet ps, ErtsMonotonicTime timeout_time, int max_res)
{
int res;
if (erts_smp_atomic_read_nob(&ps->no_of_user_fds) == 0
- && tv->tv_usec == 0 && tv->tv_sec == 0) {
+ && timeout_time == ERTS_POLL_NO_TIMEOUT) {
/* Nothing to poll and zero timeout; done... */
return 0;
}
else {
- long timeout = tv->tv_sec*1000 + tv->tv_usec/1000;
- if (timeout > ERTS_AINT32_T_MAX)
- timeout = ERTS_AINT32_T_MAX;
- ASSERT(timeout >= 0);
- erts_smp_atomic32_set_relb(&ps->timeout, (erts_aint32_t) timeout);
+ int timeout;
#if ERTS_POLL_USE_FALLBACK
if (!(ps->fallback_used = ERTS_POLL_NEED_FALLBACK(ps))) {
#if ERTS_POLL_USE_EPOLL /* --- epoll ------------------------------- */
- if (timeout > INT_MAX)
- timeout = INT_MAX;
if (max_res > ps->res_events_len)
grow_res_events(ps, max_res);
+ timeout = (int) get_timeout(ps, 1000, timeout_time);
#ifdef ERTS_SMP
if (timeout)
erts_thr_progress_prepare_wait(NULL);
#endif
- res = epoll_wait(ps->kp_fd, ps->res_events, max_res, (int)timeout);
+ res = epoll_wait(ps->kp_fd, ps->res_events, max_res, timeout);
#elif ERTS_POLL_USE_KQUEUE /* --- kqueue ------------------------------ */
struct timespec ts;
if (max_res > ps->res_events_len)
grow_res_events(ps, max_res);
+ timeout = get_timeout_timespec(ps, &ts, timeout_time);
#ifdef ERTS_SMP
if (timeout)
erts_thr_progress_prepare_wait(NULL);
#endif
- ts.tv_sec = tv->tv_sec;
- ts.tv_nsec = tv->tv_usec*1000;
res = kevent(ps->kp_fd, NULL, 0, ps->res_events, max_res, &ts);
#endif /* ----------------------------------------- */
}
@@ -2049,8 +2178,7 @@ check_fd_events(ErtsPollSet ps, SysTimeval *tv, int max_res)
#if ERTS_POLL_USE_WAKEUP_PIPE
nfds++; /* Wakeup pipe */
#endif
- if (timeout > INT_MAX)
- timeout = INT_MAX;
+ timeout = (int) get_timeout(ps, 1000, timeout_time);
poll_res.dp_nfds = nfds < max_res ? nfds : max_res;
if (poll_res.dp_nfds > ps->res_events_len)
grow_res_events(ps, poll_res.dp_nfds);
@@ -2059,33 +2187,33 @@ check_fd_events(ErtsPollSet ps, SysTimeval *tv, int max_res)
if (timeout)
erts_thr_progress_prepare_wait(NULL);
#endif
- poll_res.dp_timeout = (int) timeout;
+ poll_res.dp_timeout = timeout;
res = ioctl(ps->kp_fd, DP_POLL, &poll_res);
#elif ERTS_POLL_USE_POLL /* --- poll -------------------------------- */
- if (timeout > INT_MAX)
- timeout = INT_MAX;
+ timeout = (int) get_timeout(ps, 1000, timeout_time);
#ifdef ERTS_SMP
if (timeout)
erts_thr_progress_prepare_wait(NULL);
#endif
- res = poll(ps->poll_fds, ps->no_poll_fds, (int) timeout);
+ res = poll(ps->poll_fds, ps->no_poll_fds, timeout);
#elif ERTS_POLL_USE_SELECT /* --- select ------------------------------ */
- SysTimeval to = *tv;
+ SysTimeval to;
+ timeout = get_timeout_timeval(ps, &to, timeout_time);
ERTS_FD_COPY(&ps->input_fds, &ps->res_input_fds);
ERTS_FD_COPY(&ps->output_fds, &ps->res_output_fds);
#ifdef ERTS_SMP
- if (to.tv_sec || to.tv_usec)
+ if (timeout)
erts_thr_progress_prepare_wait(NULL);
#endif
res = ERTS_SELECT(ps->max_fd + 1,
- &ps->res_input_fds,
- &ps->res_output_fds,
- NULL,
- &to);
+ &ps->res_input_fds,
+ &ps->res_output_fds,
+ NULL,
+ &to);
#ifdef ERTS_SMP
- if (to.tv_sec || to.tv_usec)
+ if (timeout)
erts_thr_progress_finalize_wait(NULL);
if (res < 0
&& errno == EBADF
@@ -2108,10 +2236,10 @@ check_fd_events(ErtsPollSet ps, SysTimeval *tv, int max_res)
handle_update_requests(ps);
ERTS_POLLSET_UNLOCK(ps);
res = ERTS_SELECT(ps->max_fd + 1,
- &ps->res_input_fds,
- &ps->res_output_fds,
- NULL,
- &to);
+ &ps->res_input_fds,
+ &ps->res_output_fds,
+ NULL,
+ &to);
if (res == 0) {
errno = EAGAIN;
res = -1;
@@ -2133,15 +2261,14 @@ int
ERTS_POLL_EXPORT(erts_poll_wait)(ErtsPollSet ps,
ErtsPollResFd pr[],
int *len,
- SysTimeval *utvp)
+ ErtsMonotonicTime timeout_time)
{
+ ErtsMonotonicTime to;
int res, no_fds;
int ebadf = 0;
#ifdef ERTS_SMP
int ps_locked = 0;
#endif
- SysTimeval *tvp;
- SysTimeval itv;
no_fds = *len;
#ifdef ERTS_POLL_MAX_RES
@@ -2151,13 +2278,9 @@ ERTS_POLL_EXPORT(erts_poll_wait)(ErtsPollSet ps,
*len = 0;
- ASSERT(utvp);
-
- tvp = utvp;
-
#ifdef ERTS_POLL_DEBUG_PRINT
- erts_printf("Entering erts_poll_wait(), timeout=%d\n",
- (int) tvp->tv_sec*1000 + tvp->tv_usec/1000);
+ erts_printf("Entering erts_poll_wait(), timeout_time=%bps\n",
+ timeout_time);
#endif
if (ERTS_POLLSET_SET_POLLED_CHK(ps)) {
@@ -2166,12 +2289,9 @@ ERTS_POLL_EXPORT(erts_poll_wait)(ErtsPollSet ps,
goto done;
}
- if (is_woken(ps)) {
- /* Use zero timeout */
- itv.tv_sec = 0;
- itv.tv_usec = 0;
- tvp = &itv;
- }
+ to = (is_woken(ps)
+ ? ERTS_POLL_NO_TIMEOUT /* Use zero timeout */
+ : timeout_time);
#if ERTS_POLL_USE_UPDATE_REQUESTS_QUEUE
if (ERTS_POLLSET_HAVE_UPDATE_REQUESTS(ps)) {
@@ -2181,7 +2301,7 @@ ERTS_POLL_EXPORT(erts_poll_wait)(ErtsPollSet ps,
}
#endif
- res = check_fd_events(ps, tvp, no_fds);
+ res = check_fd_events(ps, to, no_fds);
woke_up(ps);
@@ -2224,7 +2344,7 @@ ERTS_POLL_EXPORT(erts_poll_wait)(ErtsPollSet ps,
#endif
done:
- erts_smp_atomic32_set_relb(&ps->timeout, ERTS_AINT32_T_MAX);
+ set_timeout_time(ps, ERTS_MONOTONIC_TIME_MAX);
#ifdef ERTS_POLL_DEBUG_PRINT
erts_printf("Leaving %s = erts_poll_wait()\n",
res == 0 ? "0" : erl_errno_id(res));
@@ -2268,13 +2388,14 @@ ERTS_POLL_EXPORT(erts_poll_async_sig_interrupt)(ErtsPollSet ps)
void
ERTS_POLL_EXPORT(erts_poll_interrupt_timed)(ErtsPollSet ps,
int set,
- erts_short_time_t msec)
+ ErtsMonotonicTime timeout_time)
{
#if ERTS_POLL_ASYNC_INTERRUPT_SUPPORT || defined(ERTS_SMP)
if (!set)
reset_wakeup_state(ps);
else {
- if (erts_smp_atomic32_read_acqb(&ps->timeout) > (erts_aint32_t) msec)
+ ErtsMonotonicTime max_wait_time = get_timeout_time(ps);
+ if (max_wait_time > timeout_time)
wake_poller(ps, 1, 0);
#ifdef ERTS_POLL_COUNT_AVOIDED_WAKEUPS
else {
@@ -2431,7 +2552,7 @@ ERTS_POLL_EXPORT(erts_poll_create_pollset)(void)
ps->internal_fd_limit = kp_fd + 1;
ps->kp_fd = kp_fd;
#endif
- erts_smp_atomic32_init_nob(&ps->timeout, ERTS_AINT32_T_MAX);
+ init_timeout_time(ps);
#ifdef ERTS_POLL_COUNT_AVOIDED_WAKEUPS
erts_smp_atomic_init_nob(&ps->no_avoided_wakeups, 0);
erts_smp_atomic_init_nob(&ps->no_avoided_interrupts, 0);
diff --git a/erts/emulator/sys/common/erl_poll.h b/erts/emulator/sys/common/erl_poll.h
index 2f1c05f401..d02ed2396b 100644
--- a/erts/emulator/sys/common/erl_poll.h
+++ b/erts/emulator/sys/common/erl_poll.h
@@ -29,6 +29,8 @@
#include "sys.h"
+#define ERTS_POLL_NO_TIMEOUT ERTS_MONOTONIC_TIME_MIN
+
#if 0
#define ERTS_POLL_COUNT_AVOIDED_WAKEUPS
#endif
@@ -241,7 +243,7 @@ void ERTS_POLL_EXPORT(erts_poll_interrupt)(ErtsPollSet,
int);
void ERTS_POLL_EXPORT(erts_poll_interrupt_timed)(ErtsPollSet,
int,
- erts_short_time_t);
+ ErtsMonotonicTime);
ErtsPollEvents ERTS_POLL_EXPORT(erts_poll_control)(ErtsPollSet,
ErtsSysFdType,
ErtsPollEvents,
@@ -254,7 +256,7 @@ void ERTS_POLL_EXPORT(erts_poll_controlv)(ErtsPollSet,
int ERTS_POLL_EXPORT(erts_poll_wait)(ErtsPollSet,
ErtsPollResFd [],
int *,
- SysTimeval *);
+ ErtsMonotonicTime);
int ERTS_POLL_EXPORT(erts_poll_max_fds)(void);
void ERTS_POLL_EXPORT(erts_poll_info)(ErtsPollSet,
ErtsPollInfo *);
diff --git a/erts/emulator/sys/ose/erl_poll.c b/erts/emulator/sys/ose/erl_poll.c
index 7d2a3d1e0b..36ee2557e8 100644
--- a/erts/emulator/sys/ose/erl_poll.c
+++ b/erts/emulator/sys/ose/erl_poll.c
@@ -114,7 +114,7 @@ struct ErtsPollSet_ {
Uint item_count;
PROCESS interrupt;
erts_atomic32_t wakeup_state;
- erts_smp_atomic32_t timeout;
+ erts_atomic64_t timeout_time;
#ifdef ERTS_SMP
erts_smp_mtx_t mtx;
#endif
@@ -122,6 +122,26 @@ struct ErtsPollSet_ {
static int max_fds = -1;
+static ERTS_INLINE void
+init_timeout_time(ErtsPollSet ps)
+{
+ erts_atomic64_init_nob(&ps->timeout_time,
+ (erts_aint64_t) ERTS_MONOTONIC_TIME_MAX);
+}
+
+static ERTS_INLINE void
+set_timeout_time(ErtsPollSet ps, ErtsMonotonicTime time)
+{
+ erts_atomic64_set_relb(&ps->timeout_time,
+ (erts_aint64_t) time);
+}
+
+static ERTS_INLINE ErtsMonotonicTime
+get_timeout_time(ErtsPollSet ps)
+{
+ return (ErtsMonotonicTime) erts_atomic64_read_acqb(&ps->timeout_time);
+}
+
#define ERTS_POLL_NOT_WOKEN ((erts_aint32_t) (1 << 0))
#define ERTS_POLL_WOKEN_INTR ((erts_aint32_t) (1 << 1))
#define ERTS_POLL_WOKEN_TIMEDOUT ((erts_aint32_t) (1 << 2))
@@ -386,12 +406,14 @@ void erts_poll_interrupt(ErtsPollSet ps,int set) {
}
-void erts_poll_interrupt_timed(ErtsPollSet ps,int set,erts_short_time_t msec) {
+void erts_poll_interrupt_timed(ErtsPollSet ps,
+ int set,
+ ErtsTimeoutTime timeout_time) {
HARDTRACEF("erts_poll_interrupt_timed called!\n");
if (!set)
reset_interrupt(ps);
- else if (erts_smp_atomic32_read_acqb(&ps->timeout) > (erts_aint32_t) msec)
+ else if (get_timeout_time(ps) > timeout_time)
set_interrupt(ps);
}
@@ -453,12 +475,14 @@ done:
}
int erts_poll_wait(ErtsPollSet ps,
- ErtsPollResFd pr[],
- int *len,
- SysTimeval *utvp) {
+ ErtsPollResFd pr[],
+ int *len,
+ ErtsMonotonicTime timeout_time)
+{
int res = ETIMEDOUT, no_fds, currid = 0;
OSTIME timeout;
union SIGNAL *sig;
+ ErtsMonotonicTime current_time, diff_time, timeout;
// HARDTRACEF("%ux: In erts_poll_wait",ps);
if (ps->interrupt == (PROCESS)0)
ps->interrupt = current_process();
@@ -472,16 +496,29 @@ int erts_poll_wait(ErtsPollSet ps,
*len = 0;
- ASSERT(utvp);
+ /* erts_printf("Entering erts_poll_wait(), timeout_time=%bps\n",
+ timeout_time); */
- /* erts_printf("Entering erts_poll_wait(), timeout=%d\n",
- (int) utvp->tv_sec*1000 + utvp->tv_usec/1000); */
-
- timeout = utvp->tv_sec*1000 + utvp->tv_usec/1000;
+ if (timeout_time == ERTS_POLL_NO_TIMEOUT) {
+ no_timeout:
+ timeout = (OSTIME) 0;
+ save_timeout_time = ERTS_MONOTONIC_TIME_MIN;
+ }
+ else {
+ ErtsMonotonicTime current_time, diff_time;
+ current_time = erts_get_monotonic_time();
+ diff_time = timeout_time - current_time;
+ if (diff_time <= 0)
+ goto no_timeout;
+ diff_time = (ERTS_MONOTONIC_TO_MSEC(diff_time - 1) + 1);
+ if (diff_time > INT_MAX)
+ diff_time = INT_MAX;
+ timeout = (OSTIME) diff_time;
+ save_timeout_time = current_time;
+ save_timeout_time += ERTS_MSEC_TO_MONOTONIC(diff_time);
+ }
- if (timeout > ((time_t) ERTS_AINT32_T_MAX))
- timeout = ERTS_AINT32_T_MAX;
- erts_smp_atomic32_set_relb(&ps->timeout, (erts_aint32_t) timeout);
+ set_timeout_time(ps, save_timeout_time);
while (currid < no_fds) {
if (timeout > 0) {
@@ -627,7 +664,7 @@ int erts_poll_wait(ErtsPollSet ps,
}
erts_atomic32_set_nob(&ps->wakeup_state, ERTS_POLL_NOT_WOKEN);
- erts_smp_atomic32_set_nob(&ps->timeout, ERTS_AINT32_T_MAX);
+ set_timeout_time(ps, ERTS_MONOTONIC_TIME_MAX);
*len = currid;
@@ -690,7 +727,7 @@ ErtsPollSet erts_poll_create_pollset(void)
ps->info = NULL;
ps->interrupt = (PROCESS)0;
erts_atomic32_init_nob(&ps->wakeup_state, ERTS_POLL_NOT_WOKEN);
- erts_smp_atomic32_init_nob(&ps->timeout, ERTS_AINT32_T_MAX);
+ init_timeout_time(ps);
#ifdef ERTS_SMP
erts_smp_mtx_init(&ps->mtx, "pollset");
#endif
diff --git a/erts/emulator/sys/ose/sys.c b/erts/emulator/sys/ose/sys.c
index 5b950a7dae..13a5b71496 100644
--- a/erts/emulator/sys/ose/sys.c
+++ b/erts/emulator/sys/ose/sys.c
@@ -298,9 +298,9 @@ erts_sys_schedule_interrupt(int set)
#ifdef ERTS_SMP
void
-erts_sys_schedule_interrupt_timed(int set, erts_short_time_t msec)
+erts_sys_schedule_interrupt_timed(int set, ErtsMonotonicTime timeout_time)
{
- ERTS_CHK_IO_INTR_TMD(set, msec);
+ ERTS_CHK_IO_INTR_TMD(set, timeout_time);
}
#endif
diff --git a/erts/emulator/sys/unix/erl_unix_sys.h b/erts/emulator/sys/unix/erl_unix_sys.h
index dda50c486c..94adcc00c8 100644
--- a/erts/emulator/sys/unix/erl_unix_sys.h
+++ b/erts/emulator/sys/unix/erl_unix_sys.h
@@ -45,7 +45,7 @@
#include <fcntl.h>
#include "erl_errno.h"
#include <signal.h>
-
+#include <setjmp.h>
#if HAVE_SYS_SOCKETIO_H
# include <sys/socketio.h>
@@ -114,11 +114,6 @@
/*
* Make sure that MAXPATHLEN is defined.
*/
-#ifdef GETHRTIME_WITH_CLOCK_GETTIME
-#undef HAVE_GETHRTIME
-#define HAVE_GETHRTIME 1
-#endif
-
#ifndef MAXPATHLEN
# ifdef PATH_MAX
# define MAXPATHLEN PATH_MAX
@@ -160,35 +155,136 @@ typedef struct timeval SysTimeval;
typedef struct tms SysTimes;
-extern int erts_ticks_per_sec;
-
-#define SYS_CLK_TCK (erts_ticks_per_sec)
+#define SYS_CLK_TCK (erts_sys_time_data__.r.o.ticks_per_sec)
#define sys_times(Arg) times(Arg)
-#define ERTS_WRAP_SYS_TIMES 1
-extern int erts_ticks_per_sec_wrap;
-#define SYS_CLK_TCK_WRAP (erts_ticks_per_sec_wrap)
-extern clock_t sys_times_wrap(void);
+#if SIZEOF_LONG == 8
+typedef long ErtsMonotonicTime;
+typedef long ErtsSysHrTime;
+#elif SIZEOF_LONG_LONG == 8
+typedef long long ErtsMonotonicTime;
+typedef long long ErtsSysHrTime;
+#else
+#error No signed 64-bit type found...
+#endif
+
+typedef ErtsMonotonicTime ErtsSystemTime;
+
+#define ERTS_MONOTONIC_TIME_MIN (((ErtsMonotonicTime) 1) << 63)
+#define ERTS_MONOTONIC_TIME_MAX (~ERTS_MONOTONIC_TIME_MIN)
+
+/*
+ * OS monotonic time and OS system time
+ */
+
+#undef ERTS_OS_TIMES_INLINE_FUNC_PTR_CALL__
+
+#if defined(OS_SYSTEM_TIME_USING_CLOCK_GETTIME)
+# if defined(__linux__)
+# define ERTS_OS_TIMES_INLINE_FUNC_PTR_CALL__ 1
+# endif
+#endif
+
+ErtsSystemTime erts_os_system_time(void);
+
+#undef ERTS_HAVE_OS_MONOTONIC_TIME_SUPPORT
+#undef ERTS_COMPILE_TIME_MONOTONIC_TIME_UNIT
+#undef ERTS_OS_MONOTONIC_INLINE_FUNC_PTR_CALL__
+#undef ERTS_HAVE_CORRECTED_OS_MONOTONIC
+
+#if defined(OS_MONOTONIC_TIME_USING_CLOCK_GETTIME)
+# define ERTS_HAVE_OS_MONOTONIC_TIME_SUPPORT 1
+# define ERTS_COMPILE_TIME_MONOTONIC_TIME_UNIT (1000*1000*1000)
+# if defined(__linux__)
+# define ERTS_HAVE_CORRECTED_OS_MONOTONIC 1
+# define ERTS_OS_MONOTONIC_INLINE_FUNC_PTR_CALL__ 1
+# endif
+#elif defined(OS_MONOTONIC_TIME_USING_MACH_CLOCK_GET_TIME)
+# define ERTS_HAVE_OS_MONOTONIC_TIME_SUPPORT 1
+# define ERTS_COMPILE_TIME_MONOTONIC_TIME_UNIT (1000*1000*1000)
+#elif defined(OS_MONOTONIC_TIME_USING_GETHRTIME)
+# define ERTS_HAVE_OS_MONOTONIC_TIME_SUPPORT 1
+# define ERTS_COMPILE_TIME_MONOTONIC_TIME_UNIT (1000*1000*1000)
+#elif defined(OS_MONOTONIC_TIME_USING_TIMES)
+# define ERTS_HAVE_OS_MONOTONIC_TIME_SUPPORT 1
+/* Time unit determined at runtime... */
+# define ERTS_COMPILE_TIME_MONOTONIC_TIME_UNIT 0
+#else /* No OS monotonic available... */
+# define ERTS_COMPILE_TIME_MONOTONIC_TIME_UNIT (1000*1000)
+#endif
+
+/*
+ * erts_sys_hrtime() is the highest resolution
+ * time function found. Time unit is nano-seconds.
+ * It may or may not be monotonic.
+ */
+ErtsSysHrTime erts_sys_hrtime(void);
+
+struct erts_sys_time_read_only_data__ {
+#ifdef ERTS_OS_MONOTONIC_INLINE_FUNC_PTR_CALL__
+ ErtsMonotonicTime (*os_monotonic_time)(void);
+#endif
+#ifdef ERTS_OS_TIMES_INLINE_FUNC_PTR_CALL__
+ void (*os_times)(ErtsMonotonicTime *, ErtsSystemTime *);
+#endif
+ int ticks_per_sec;
+};
+
+typedef struct {
+ union {
+ struct erts_sys_time_read_only_data__ o;
+ char align__[(((sizeof(struct erts_sys_time_read_only_data__) - 1)
+ / ASSUMED_CACHE_LINE_SIZE) + 1)
+ * ASSUMED_CACHE_LINE_SIZE];
+ } r;
+} ErtsSysTimeData__;
-#ifdef HAVE_GETHRTIME
-#ifdef GETHRTIME_WITH_CLOCK_GETTIME
-typedef long long SysHrTime;
+extern ErtsSysTimeData__ erts_sys_time_data__;
-extern SysHrTime sys_gethrtime(void);
-#define sys_init_hrtime() /* Nothing */
+#ifdef ERTS_HAVE_OS_MONOTONIC_TIME_SUPPORT
-#else /* Real gethrtime (Solaris) */
+#ifdef ERTS_OS_MONOTONIC_INLINE_FUNC_PTR_CALL__
+ERTS_GLB_INLINE
+#endif
+ErtsMonotonicTime erts_os_monotonic_time(void);
-typedef hrtime_t SysHrTime;
+#ifdef ERTS_OS_TIMES_INLINE_FUNC_PTR_CALL__
+ERTS_GLB_INLINE
+#endif
+void erts_os_times(ErtsMonotonicTime *, ErtsSystemTime *);
-#define sys_gethrtime() gethrtime()
-#define sys_init_hrtime() /* Nothing */
+#if ERTS_GLB_INLINE_INCL_FUNC_DEF
+
+#ifdef ERTS_OS_MONOTONIC_INLINE_FUNC_PTR_CALL__
+
+ERTS_GLB_INLINE ErtsMonotonicTime
+erts_os_monotonic_time(void)
+{
+ return (*erts_sys_time_data__.r.o.os_monotonic_time)();
+}
+
+#endif /* ERTS_OS_MONOTONIC_INLINE_FUNC_PTR_CALL__ */
+
+#ifdef ERTS_OS_TIMES_INLINE_FUNC_PTR_CALL__
+
+ERTS_GLB_INLINE void
+erts_os_times(ErtsMonotonicTime *mtimep, ErtsSystemTime *stimep)
+{
+ return (*erts_sys_time_data__.r.o.os_times)(mtimep, stimep);
+}
-#endif /* GETHRTIME_WITH_CLOCK_GETTIME */
-#endif /* HAVE_GETHRTIME */
+#endif /* ERTS_OS_TIMES_INLINE_FUNC_PTR_CALL__ */
-#if (defined(HAVE_GETHRVTIME) || defined(HAVE_CLOCK_GETTIME))
+#endif /* ERTS_GLB_INLINE_INCL_FUNC_DEF */
+
+#endif /* ERTS_HAVE_OS_MONOTONIC_TIME_SUPPORT */
+
+/*
+ *
+ */
+
+#if (defined(HAVE_GETHRVTIME) || defined(HAVE_CLOCK_GETTIME_CPU_TIME))
typedef long long SysCpuTime;
typedef struct timespec SysTimespec;
@@ -200,7 +296,7 @@ typedef struct timespec SysTimespec;
int sys_start_hrvtime(void);
int sys_stop_hrvtime(void);
-#elif defined(HAVE_CLOCK_GETTIME)
+#elif defined(HAVE_CLOCK_GETTIME_CPU_TIME)
#define sys_clock_gettime(cid,tp) clock_gettime((cid),&(tp))
#define sys_get_proc_cputime(t,tp) sys_clock_gettime(CLOCK_PROCESS_CPUTIME_ID,(tp))
@@ -211,13 +307,8 @@ int sys_stop_hrvtime(void);
#define SYS_CLOCK_RESOLUTION 1
/* These are defined in sys.c */
-#if defined(SIG_SIGSET) /* Old SysV */
-RETSIGTYPE (*sys_sigset())();
-#elif defined(SIG_SIGNAL) /* Old BSD */
-RETSIGTYPE (*sys_sigset())();
-#else
-RETSIGTYPE (*sys_sigset(int, RETSIGTYPE (*func)(int)))(int);
-#endif
+typedef void (*SIGFUNC)(int);
+extern SIGFUNC sys_signal(int, SIGFUNC);
extern void sys_sigrelease(int);
extern void sys_sigblock(int);
extern void sys_stop_cat(void);
@@ -356,4 +447,28 @@ extern int exit_async(void);
#define ERTS_EXIT_AFTER_DUMP _exit
+#if !defined(__APPLE__) && !defined(__MACH__)
+/* Some OS X versions do not allow (ab)using signal handlers like this */
+#define ERTS_HAVE_TRY_CATCH 1
+
+/* We try to simulate a try catch in C with the help of signal handlers.
+ * Only use this as a very last resort, as it is not very portable and
+ * quite unstable. It is also not thread safe, so make sure that only
+ * one thread can call this at a time!
+ */
+extern void erts_sys_sigsegv_handler(int);
+extern jmp_buf erts_sys_sigsegv_jmp;
+#define ERTS_SYS_TRY_CATCH(EXPR,CATCH) \
+ do { \
+ SIGFUNC prev_handler = sys_signal(SIGSEGV, \
+ erts_sys_sigsegv_handler); \
+ if (!setjmp(erts_sys_sigsegv_jmp)) { \
+ EXPR; \
+ } else { \
+ CATCH; \
+ } \
+ sys_signal(SIGSEGV,prev_handler); \
+ } while(0)
+#endif
+
#endif /* #ifndef _ERL_UNIX_SYS_H */
diff --git a/erts/emulator/sys/unix/sys.c b/erts/emulator/sys/unix/sys.c
index cd87b320e2..7d52650a70 100644
--- a/erts/emulator/sys/unix/sys.c
+++ b/erts/emulator/sys/unix/sys.c
@@ -34,6 +34,7 @@
#include <termios.h>
#include <ctype.h>
#include <sys/utsname.h>
+#include <sys/select.h>
#ifdef ISC32
#include <sys/bsdtypes.h>
@@ -85,14 +86,24 @@ static erts_smp_rwmtx_t environ_rwmtx;
#define DISABLE_VFORK 0
#endif
+#if defined IOV_MAX
+#define MAXIOV IOV_MAX
+#elif defined UIO_MAXIOV
+#define MAXIOV UIO_MAXIOV
+#else
+#define MAXIOV 16
+#endif
+
#ifdef USE_THREADS
# ifdef ENABLE_CHILD_WAITER_THREAD
# define CHLDWTHR ENABLE_CHILD_WAITER_THREAD
# else
# define CHLDWTHR 0
# endif
+# define FDBLOCK 1
#else
# define CHLDWTHR 0
+# define FDBLOCK 0
#endif
/*
* [OTP-3906]
@@ -121,6 +132,15 @@ struct ErtsSysReportExit_ {
#endif
};
+/* Used by the fd driver iff the fd could not be set to non-blocking */
+typedef struct ErtsSysBlocking_ {
+ ErlDrvPDL pdl;
+ int res;
+ int err;
+ unsigned int pkey;
+} ErtsSysBlocking;
+
+
/* This data is shared by these drivers - initialized by spawn_init() */
static struct driver_data {
ErlDrvPort port_num;
@@ -129,6 +149,8 @@ static struct driver_data {
int pid;
int alive;
int status;
+ int terminating;
+ ErtsSysBlocking *blocking;
} *driver_data; /* indexed by fd */
static ErtsSysReportExit *report_exit_list;
@@ -202,8 +224,14 @@ static erts_smp_atomic_t sys_misc_mem_sz;
#if defined(ERTS_SMP)
static void smp_sig_notify(char c);
static int sig_notify_fds[2] = {-1, -1};
+
+static int sig_suspend_fds[2] = {-1, -1};
+#define ERTS_SYS_SUSPEND_SIGNAL SIGUSR2
+
#endif
+jmp_buf erts_sys_sigsegv_jmp;
+
#if CHLDWTHR || defined(ERTS_SMP)
erts_mtx_t chld_stat_mtx;
#endif
@@ -280,7 +308,7 @@ struct {
int (*event)(ErlDrvPort, ErlDrvEvent, ErlDrvEventData);
void (*check_io_as_interrupt)(void);
void (*check_io_interrupt)(int);
- void (*check_io_interrupt_tmd)(int, erts_short_time_t);
+ void (*check_io_interrupt_tmd)(int, ErtsMonotonicTime);
void (*check_io)(int);
Uint (*size)(void);
Eterm (*info)(void *);
@@ -386,9 +414,9 @@ erts_sys_schedule_interrupt(int set)
#ifdef ERTS_SMP
void
-erts_sys_schedule_interrupt_timed(int set, erts_short_time_t msec)
+erts_sys_schedule_interrupt_timed(int set, ErtsMonotonicTime timeout_time)
{
- ERTS_CHK_IO_INTR_TMD(set, msec);
+ ERTS_CHK_IO_INTR_TMD(set, timeout_time);
}
#endif
@@ -504,11 +532,14 @@ thr_create_prepare_child(void *vtcdp)
void
erts_sys_pre_init(void)
{
+#ifdef USE_THREADS
+ erts_thr_init_data_t eid = ERTS_THR_INIT_DATA_DEF_INITER;
+#endif
+
erts_printf_add_cr_to_stdout = 1;
erts_printf_add_cr_to_stderr = 1;
+
#ifdef USE_THREADS
- {
- erts_thr_init_data_t eid = ERTS_THR_INIT_DATA_DEF_INITER;
eid.thread_create_child_func = thr_create_prepare_child;
/* Before creation in parent */
@@ -531,6 +562,12 @@ erts_sys_pre_init(void)
erts_lcnt_init();
#endif
+#endif /* USE_THREADS */
+
+ erts_init_sys_time_sup();
+
+#ifdef USE_THREADS
+
#if CHLDWTHR || defined(ERTS_SMP)
erts_mtx_init(&chld_stat_mtx, "child_status");
#endif
@@ -541,7 +578,7 @@ erts_sys_pre_init(void)
erts_cnd_init(&chld_stat_cnd);
children_alive = 0;
#endif
- }
+
#ifdef ERTS_SMP
erts_smp_atomic32_init_nob(&erts_break_requested, 0);
erts_smp_atomic32_init_nob(&erts_got_sigusr1, 0);
@@ -554,7 +591,9 @@ erts_sys_pre_init(void)
#if !CHLDWTHR && !defined(ERTS_SMP)
children_died = 0;
#endif
+
#endif /* USE_THREADS */
+
erts_smp_atomic_init_nob(&sys_misc_mem_sz, 0);
{
@@ -640,39 +679,7 @@ erl_sys_init(void)
/* signal handling */
-#ifdef SIG_SIGSET /* Old SysV */
-RETSIGTYPE (*sys_sigset(sig, func))()
-int sig;
-RETSIGTYPE (*func)();
-{
- return(sigset(sig, func));
-}
-void sys_sigblock(int sig)
-{
- sighold(sig);
-}
-void sys_sigrelease(int sig)
-{
- sigrelse(sig);
-}
-#else /* !SIG_SIGSET */
-#ifdef SIG_SIGNAL /* Old BSD */
-RETSIGTYPE (*sys_sigset(sig, func))(int, int)
-int sig;
-RETSIGTYPE (*func)();
-{
- return(signal(sig, func));
-}
-sys_sigblock(int sig)
-{
- sigblock(sig);
-}
-sys_sigrelease(int sig)
-{
- sigsetmask(sigblock(0) & ~sigmask(sig));
-}
-#else /* !SIG_SIGNAL */ /* The True Way - POSIX!:-) */
-RETSIGTYPE (*sys_sigset(int sig, RETSIGTYPE (*func)(int)))(int)
+SIGFUNC sys_signal(int sig, SIGFUNC func)
{
struct sigaction act, oact;
@@ -705,23 +712,35 @@ void sys_sigrelease(int sig)
sigaddset(&mask, sig);
sigprocmask(SIG_UNBLOCK, &mask, (sigset_t *)NULL);
}
-#endif /* !SIG_SIGNAL */
-#endif /* !SIG_SIGSET */
-#if (0) /* not used? -- gordon */
-static void (*break_func)();
-static RETSIGTYPE break_handler(int sig)
-{
-#ifdef QNX
- /* Turn off SIGCHLD during break processing */
- sys_sigblock(SIGCHLD);
-#endif
- (*break_func)();
-#ifdef QNX
- sys_sigrelease(SIGCHLD);
-#endif
+void erts_sys_sigsegv_handler(int signo) {
+ if (signo == SIGSEGV) {
+ longjmp(erts_sys_sigsegv_jmp, 1);
+ }
+}
+
+/*
+ * Function returns 1 if we can read from all values in between
+ * start and stop.
+ */
+int
+erts_sys_is_area_readable(char *start, char *stop) {
+ int fds[2];
+ if (!pipe(fds)) {
+ /* We let write try to figure out if the pointers are readable */
+ int res = write(fds[1], start, (char*)stop - (char*)start);
+ if (res == -1) {
+ close(fds[0]);
+ close(fds[1]);
+ return 0;
+ }
+ close(fds[0]);
+ close(fds[1]);
+ return 1;
+ }
+ return 0;
+
}
-#endif /* 0 */
static ERTS_INLINE int
prepare_crash_dump(int secs)
@@ -849,9 +868,23 @@ sigusr1_exit(void)
#ifdef ETHR_UNUSABLE_SIGUSRX
#warning "Unusable SIGUSR1 & SIGUSR2. Disabling use of these signals"
-#endif
-#ifndef ETHR_UNUSABLE_SIGUSRX
+#else
+
+#ifdef ERTS_SMP
+void
+sys_thr_suspend(erts_tid_t tid) {
+ erts_thr_kill(tid, ERTS_SYS_SUSPEND_SIGNAL);
+}
+
+void
+sys_thr_resume(erts_tid_t tid) {
+ int i = 0, res;
+ do {
+ res = write(sig_suspend_fds[1],&i,sizeof(i));
+ } while (res < 0 && errno == EAGAIN);
+}
+#endif
#if (defined(SIG_SIGSET) || defined(SIG_SIGNAL))
static RETSIGTYPE user_signal1(void)
@@ -866,20 +899,20 @@ static RETSIGTYPE user_signal1(int signum)
#endif
}
-#ifdef QUANTIFY
+#ifdef ERTS_SMP
#if (defined(SIG_SIGSET) || defined(SIG_SIGNAL))
-static RETSIGTYPE user_signal2(void)
+static RETSIGTYPE suspend_signal(void)
#else
-static RETSIGTYPE user_signal2(int signum)
+static RETSIGTYPE suspend_signal(int signum)
#endif
{
-#ifdef ERTS_SMP
- smp_sig_notify('2');
-#else
- quantify_save_data();
-#endif
+ int res;
+ int buf[1];
+ do {
+ res = read(sig_suspend_fds[0], buf, sizeof(int));
+ } while (res < 0 && errno == EINTR);
}
-#endif
+#endif /* #ifdef ERTS_SMP */
#endif /* #ifndef ETHR_UNUSABLE_SIGUSRX */
@@ -904,9 +937,9 @@ static RETSIGTYPE do_quit(int signum)
/* Disable break */
void erts_set_ignore_break(void) {
- sys_sigset(SIGINT, SIG_IGN);
- sys_sigset(SIGQUIT, SIG_IGN);
- sys_sigset(SIGTSTP, SIG_IGN);
+ sys_signal(SIGINT, SIG_IGN);
+ sys_signal(SIGQUIT, SIG_IGN);
+ sys_signal(SIGTSTP, SIG_IGN);
}
/* Don't use ctrl-c for break handler but let it be
@@ -929,14 +962,14 @@ void erts_replace_intr(void) {
void init_break_handler(void)
{
- sys_sigset(SIGINT, request_break);
+ sys_signal(SIGINT, request_break);
#ifndef ETHR_UNUSABLE_SIGUSRX
- sys_sigset(SIGUSR1, user_signal1);
-#ifdef QUANTIFY
- sys_sigset(SIGUSR2, user_signal2);
-#endif
+ sys_signal(SIGUSR1, user_signal1);
+#ifdef ERTS_SMP
+ sys_signal(ERTS_SYS_SUSPEND_SIGNAL, suspend_signal);
+#endif /* #ifdef ERTS_SMP */
#endif /* #ifndef ETHR_UNUSABLE_SIGUSRX */
- sys_sigset(SIGQUIT, do_quit);
+ sys_signal(SIGQUIT, do_quit);
}
int sys_max_files(void)
@@ -953,8 +986,13 @@ static void block_signals(void)
sys_sigblock(SIGINT);
#ifndef ETHR_UNUSABLE_SIGUSRX
sys_sigblock(SIGUSR1);
+#endif /* #ifndef ETHR_UNUSABLE_SIGUSRX */
+#endif /* #ifndef ERTS_SMP */
+
+#if defined(ERTS_SMP) && !defined(ETHR_UNUSABLE_SIGUSRX)
+ sys_sigblock(ERTS_SYS_SUSPEND_SIGNAL);
#endif
-#endif
+
}
static void unblock_signals(void)
@@ -968,26 +1006,13 @@ static void unblock_signals(void)
#ifndef ETHR_UNUSABLE_SIGUSRX
sys_sigrelease(SIGUSR1);
#endif /* #ifndef ETHR_UNUSABLE_SIGUSRX */
+#endif /* #ifndef ERTS_SMP */
+
+#if defined(ERTS_SMP) && !defined(ETHR_UNUSABLE_SIGUSRX)
+ sys_sigrelease(ERTS_SYS_SUSPEND_SIGNAL);
#endif
-}
-/************************** Time stuff **************************/
-#ifdef HAVE_GETHRTIME
-#ifdef GETHRTIME_WITH_CLOCK_GETTIME
-SysHrTime sys_gethrtime(void)
-{
- struct timespec ts;
- long long result;
- if (clock_gettime(CLOCK_MONOTONIC,&ts) != 0) {
- erl_exit(1,"Fatal, could not get clock_monotonic value!, "
- "errno = %d\n", errno);
- }
- result = ((long long) ts.tv_sec) * 1000000000LL +
- ((long long) ts.tv_nsec);
- return (SysHrTime) result;
}
-#endif
-#endif
/************************** OS info *******************************/
@@ -1094,11 +1119,16 @@ void fini_getenv_state(GETENV_STATE *state)
/* Driver interfaces */
static ErlDrvData spawn_start(ErlDrvPort, char*, SysDriverOpts*);
static ErlDrvData fd_start(ErlDrvPort, char*, SysDriverOpts*);
+#if FDBLOCK
+static void fd_async(void *);
+static void fd_ready_async(ErlDrvData drv_data, ErlDrvThreadData thread_data);
+#endif
static ErlDrvSSizeT fd_control(ErlDrvData, unsigned int, char *, ErlDrvSizeT,
char **, ErlDrvSizeT);
static ErlDrvData vanilla_start(ErlDrvPort, char*, SysDriverOpts*);
static int spawn_init(void);
static void fd_stop(ErlDrvData);
+static void fd_flush(ErlDrvData);
static void stop(ErlDrvData);
static void ready_input(ErlDrvData, ErlDrvEvent);
static void ready_output(ErlDrvData, ErlDrvEvent);
@@ -1143,8 +1173,12 @@ struct erl_drv_entry fd_driver_entry = {
fd_control,
NULL,
outputv,
- NULL, /* ready_async */
- NULL, /* flush */
+#if FDBLOCK
+ fd_ready_async, /* ready_async */
+#else
+ NULL,
+#endif
+ fd_flush, /* flush */
NULL, /* call */
NULL, /* event */
ERL_DRV_EXTENDED_MARKER,
@@ -1198,13 +1232,28 @@ static RETSIGTYPE onchld(int signum)
#endif
}
+static int set_blocking_data(struct driver_data *dd) {
+
+ dd->blocking = erts_alloc(ERTS_ALC_T_SYS_BLOCKING, sizeof(ErtsSysBlocking));
+
+ erts_smp_atomic_add_nob(&sys_misc_mem_sz, sizeof(ErtsSysBlocking));
+
+ dd->blocking->pdl = driver_pdl_create(dd->port_num);
+ dd->blocking->res = 0;
+ dd->blocking->err = 0;
+ dd->blocking->pkey = driver_async_port_key(dd->port_num);
+
+ return 1;
+}
+
static int set_driver_data(ErlDrvPort port_num,
int ifd,
int ofd,
int packet_bytes,
int read_write,
int exit_status,
- int pid)
+ int pid,
+ int is_blocking)
{
Port *prt;
ErtsSysReportExit *report_exit;
@@ -1236,8 +1285,13 @@ static int set_driver_data(ErlDrvPort port_num,
driver_data[ifd].pid = pid;
driver_data[ifd].alive = 1;
driver_data[ifd].status = 0;
+ driver_data[ifd].terminating = 0;
+ driver_data[ifd].blocking = NULL;
if (read_write & DO_WRITE) {
driver_data[ifd].ofd = ofd;
+ if (is_blocking && FDBLOCK)
+ if (!set_blocking_data(driver_data+ifd))
+ return -1;
if (ifd != ofd)
driver_data[ofd] = driver_data[ifd]; /* structure copy */
} else { /* DO_READ only */
@@ -1253,6 +1307,11 @@ static int set_driver_data(ErlDrvPort port_num,
driver_data[ofd].pid = pid;
driver_data[ofd].alive = 1;
driver_data[ofd].status = 0;
+ driver_data[ofd].terminating = 0;
+ driver_data[ofd].blocking = NULL;
+ if (is_blocking && FDBLOCK)
+ if (!set_blocking_data(driver_data+ofd))
+ return -1;
return(ofd);
}
}
@@ -1262,11 +1321,13 @@ static int spawn_init()
int i;
#if CHLDWTHR
erts_thr_opts_t thr_opts = ERTS_THR_OPTS_DEFAULT_INITER;
+
thr_opts.detached = 0;
thr_opts.suggested_stack_size = 0; /* Smallest possible */
+ thr_opts.name = "child_waiter";
#endif
- sys_sigset(SIGPIPE, SIG_IGN); /* Ignore - we'll handle the write failure */
+ sys_signal(SIGPIPE, SIG_IGN); /* Ignore - we'll handle the write failure */
driver_data = (struct driver_data *)
erts_alloc(ERTS_ALC_T_DRV_TAB, max_files * sizeof(struct driver_data));
erts_smp_atomic_add_nob(&sys_misc_mem_sz,
@@ -1279,7 +1340,7 @@ static int spawn_init()
sys_sigblock(SIGCHLD);
#endif
- sys_sigset(SIGCHLD, onchld); /* Reap children */
+ sys_signal(SIGCHLD, onchld); /* Reap children */
#if CHLDWTHR
erts_thr_create(&child_waiter_tid, child_waiter, NULL, &thr_opts);
@@ -1745,7 +1806,7 @@ static ErlDrvData spawn_start(ErlDrvPort port_num, char* name, SysDriverOpts* op
}
res = set_driver_data(port_num, ifd[0], ofd[1], opts->packet_bytes,
- opts->read_write, opts->exit_status, pid);
+ opts->read_write, opts->exit_status, pid, 0);
/* Don't unblock SIGCHLD until now, since the call above must
first complete putting away the info about our new subprocess. */
unblock_signals();
@@ -1830,6 +1891,7 @@ static ErlDrvData fd_start(ErlDrvPort port_num, char* name,
SysDriverOpts* opts)
{
ErlDrvData res;
+ int non_blocking = 0;
if (((opts->read_write & DO_READ) && opts->ifd >= max_files) ||
((opts->read_write & DO_WRITE) && opts->ofd >= max_files))
@@ -1902,6 +1964,20 @@ static ErlDrvData fd_start(ErlDrvPort port_num, char* name,
* case - it can be called with any old pre-existing file descriptors,
* the relations between which (if they're even two) we can only guess
* at - still, we try our best...
+ *
+ * Added note OTP 18: Some systems seem to use stdout/stderr to log data
+ * using unix pipes, so we cannot allow the system to block on a write.
+ * Therefore we use an async thread to write the data to fd's that could
+ * not be set to non-blocking. When no async threads are available we
+ * fall back on the old behaviour.
+ *
+ * Also the guarantee about what is delivered to the OS has changed.
+ * Pre 18 the fd driver did no flushing of data before terminating.
+ * Now it does. This is because we want to be able to guarantee that things
+ * such as escripts and friends really have outputted all data before
+ * terminating. This could potentially block the termination of the system
+ * for a very long time, but if the user wants to terminate fast she should
+ * use erlang:halt with flush=false.
*/
if (opts->read_write & DO_READ) {
@@ -1924,6 +2000,7 @@ static ErlDrvData fd_start(ErlDrvPort port_num, char* name,
imagine a scenario where setting non-blocking mode
here would cause problems - go ahead and do it. */
+ non_blocking = 1;
SET_NONBLOCKING(opts->ofd);
} else { /* output fd is a tty, input fd isn't */
@@ -1966,6 +2043,7 @@ static ErlDrvData fd_start(ErlDrvPort port_num, char* name,
(nfd = open(tty, O_WRONLY)) != -1) {
dup2(nfd, opts->ofd);
close(nfd);
+ non_blocking = 1;
SET_NONBLOCKING(opts->ofd);
}
}
@@ -1974,8 +2052,9 @@ static ErlDrvData fd_start(ErlDrvPort port_num, char* name,
}
CHLD_STAT_LOCK;
res = (ErlDrvData)(long)set_driver_data(port_num, opts->ifd, opts->ofd,
- opts->packet_bytes,
- opts->read_write, 0, -1);
+ opts->packet_bytes,
+ opts->read_write, 0, -1,
+ !non_blocking);
CHLD_STAT_UNLOCK;
return res;
}
@@ -2001,14 +2080,30 @@ static void nbio_stop_fd(ErlDrvPort prt, int fd)
SET_BLOCKING(fd);
}
-static void fd_stop(ErlDrvData fd) /* Does not close the fds */
+static void fd_stop(ErlDrvData ev) /* Does not close the fds */
{
int ofd;
+ int fd = (int)(long)ev;
+ ErlDrvPort prt = driver_data[fd].port_num;
- nbio_stop_fd(driver_data[(int)(long)fd].port_num, (int)(long)fd);
- ofd = driver_data[(int)(long)fd].ofd;
- if (ofd != (int)(long)fd && ofd != -1)
- nbio_stop_fd(driver_data[(int)(long)fd].port_num, (int)(long)ofd);
+#if FDBLOCK
+ if (driver_data[fd].blocking) {
+ erts_free(ERTS_ALC_T_SYS_BLOCKING,driver_data[fd].blocking);
+ driver_data[fd].blocking = NULL;
+ erts_smp_atomic_add_nob(&sys_misc_mem_sz, -1*sizeof(ErtsSysBlocking));
+ }
+#endif
+
+ nbio_stop_fd(prt, fd);
+ ofd = driver_data[fd].ofd;
+ if (ofd != fd && ofd != -1)
+ nbio_stop_fd(prt, ofd);
+}
+
+static void fd_flush(ErlDrvData fd)
+{
+ if (!driver_data[(int)(long)fd].terminating)
+ driver_data[(int)(long)fd].terminating = 1;
}
static ErlDrvData vanilla_start(ErlDrvPort port_num, char* name,
@@ -2031,8 +2126,8 @@ static ErlDrvData vanilla_start(ErlDrvPort port_num, char* name,
CHLD_STAT_LOCK;
res = (ErlDrvData)(long)set_driver_data(port_num, fd, fd,
- opts->packet_bytes,
- opts->read_write, 0, -1);
+ opts->packet_bytes,
+ opts->read_write, 0, -1, 0);
CHLD_STAT_UNLOCK;
return res;
}
@@ -2069,6 +2164,7 @@ static void stop(ErlDrvData fd)
}
}
+/* used by fd_driver */
static void outputv(ErlDrvData e, ErlIOVec* ev)
{
int fd = (int)(long)e;
@@ -2094,12 +2190,21 @@ static void outputv(ErlDrvData e, ErlIOVec* ev)
ev->iov[0].iov_base = lbp;
ev->iov[0].iov_len = pb;
ev->size += pb;
+
+ if (driver_data[fd].blocking && FDBLOCK)
+ driver_pdl_lock(driver_data[fd].blocking->pdl);
+
if ((sz = driver_sizeq(ix)) > 0) {
driver_enqv(ix, ev, 0);
+
+ if (driver_data[fd].blocking && FDBLOCK)
+ driver_pdl_unlock(driver_data[fd].blocking->pdl);
+
if (sz + ev->size >= (1 << 13))
set_busy_port(ix, 1);
}
- else {
+ else if (!driver_data[fd].blocking || !FDBLOCK) {
+ /* We try to write directly if the fd in non-blocking */
int vsize = ev->vsize > MAX_VSIZE ? MAX_VSIZE : ev->vsize;
n = writev(ofd, (const void *) (ev->iov), vsize);
@@ -2115,10 +2220,22 @@ static void outputv(ErlDrvData e, ErlIOVec* ev)
driver_enqv(ix, ev, n); /* n is the skip value */
driver_select(ix, ofd, ERL_DRV_WRITE|ERL_DRV_USE, 1);
}
+#if FDBLOCK
+ else {
+ if (ev->size != 0) {
+ driver_enqv(ix, ev, 0);
+ driver_pdl_unlock(driver_data[fd].blocking->pdl);
+ driver_async(ix, &driver_data[fd].blocking->pkey,
+ fd_async, driver_data+fd, NULL);
+ } else {
+ driver_pdl_unlock(driver_data[fd].blocking->pdl);
+ }
+ }
+#endif
/* return 0;*/
}
-
+/* Used by spawn_driver and vanilla driver */
static void output(ErlDrvData e, char* buf, ErlDrvSizeT len)
{
int fd = (int)(long)e;
@@ -2181,6 +2298,23 @@ static int port_inp_failure(ErlDrvPort port_num, int ready_fd, int res)
ASSERT(res <= 0);
(void) driver_select(port_num, ready_fd, ERL_DRV_READ|ERL_DRV_WRITE, 0);
clear_fd_data(ready_fd);
+
+ if (driver_data[ready_fd].blocking && FDBLOCK) {
+ driver_pdl_lock(driver_data[ready_fd].blocking->pdl);
+ if (driver_sizeq(driver_data[ready_fd].port_num) > 0) {
+ driver_pdl_unlock(driver_data[ready_fd].blocking->pdl);
+ /* We have stuff in the output queue, so we just
+ set the state to terminating and wait for fd_async_ready
+ to terminate the port */
+ if (res == 0)
+ driver_data[ready_fd].terminating = 2;
+ else
+ driver_data[ready_fd].terminating = -err;
+ return 0;
+ }
+ driver_pdl_unlock(driver_data[ready_fd].blocking->pdl);
+ }
+
if (res == 0) {
if (driver_data[ready_fd].report_exit) {
CHLD_STAT_LOCK;
@@ -2231,6 +2365,7 @@ static void ready_input(ErlDrvData e, ErlDrvEvent ready_fd)
port_num = driver_data[fd].port_num;
packet_bytes = driver_data[fd].packet_bytes;
+
if (packet_bytes == 0) {
byte *read_buf = (byte *) erts_alloc(ERTS_ALC_T_SYS_READ_BUF,
ERTS_SYS_READ_BUF_SZ);
@@ -2354,6 +2489,8 @@ static void ready_output(ErlDrvData e, ErlDrvEvent ready_fd)
if ((iv = (struct iovec*) driver_peekq(ix, &vsize)) == NULL) {
driver_select(ix, ready_fd, ERL_DRV_WRITE, 0);
+ if (driver_data[fd].terminating)
+ driver_failure_atom(driver_data[fd].port_num,"normal");
return; /* 0; */
}
vsize = vsize > MAX_VSIZE ? MAX_VSIZE : vsize;
@@ -2379,6 +2516,78 @@ static void stop_select(ErlDrvEvent fd, void* _)
close((int)fd);
}
+#if FDBLOCK
+
+static void
+fd_async(void *async_data)
+{
+ int res;
+ struct driver_data *dd = (struct driver_data*)async_data;
+ SysIOVec *iov0;
+ SysIOVec *iov;
+ int iovlen;
+ int err;
+ /* much of this code is stolen from efile_drv:invoke_writev */
+ driver_pdl_lock(dd->blocking->pdl);
+ iov0 = driver_peekq(dd->port_num, &iovlen);
+ iovlen = iovlen < MAXIOV ? iovlen : MAXIOV;
+ iov = erts_alloc_fnf(ERTS_ALC_T_SYS_WRITE_BUF,
+ sizeof(SysIOVec)*iovlen);
+ if (!iov) {
+ res = -1;
+ err = ENOMEM;
+ driver_pdl_unlock(dd->blocking->pdl);
+ } else {
+ memcpy(iov,iov0,iovlen*sizeof(SysIOVec));
+ driver_pdl_unlock(dd->blocking->pdl);
+
+ res = writev(dd->ofd, iov, iovlen);
+ err = errno;
+
+ erts_free(ERTS_ALC_T_SYS_WRITE_BUF, iov);
+ }
+ dd->blocking->res = res;
+ dd->blocking->err = err;
+}
+
+void fd_ready_async(ErlDrvData drv_data,
+ ErlDrvThreadData thread_data) {
+ struct driver_data *dd = (struct driver_data *)thread_data;
+ ErlDrvPort port_num = dd->port_num;
+
+ ASSERT(dd->blocking);
+ ASSERT(dd == (driver_data + (int)(long)drv_data));
+
+ if (dd->blocking->res > 0) {
+ driver_pdl_lock(dd->blocking->pdl);
+ if (driver_deq(port_num, dd->blocking->res) == 0) {
+ driver_pdl_unlock(dd->blocking->pdl);
+ set_busy_port(port_num, 0);
+ if (dd->terminating) {
+ /* The port is has been ordered to terminate
+ from either fd_flush or port_inp_failure */
+ if (dd->terminating == 1)
+ driver_failure_atom(port_num, "normal");
+ else if (dd->terminating == 2)
+ driver_failure_eof(port_num);
+ else if (dd->terminating < 0)
+ driver_failure_posix(port_num, -dd->terminating);
+ return; /* -1; */
+ }
+ } else {
+ driver_pdl_unlock(dd->blocking->pdl);
+ /* still data left to write in queue */
+ driver_async(port_num, &dd->blocking->pkey, fd_async, dd, NULL);
+ return /* 0; */;
+ }
+ } else if (dd->blocking->res < 0) {
+ driver_failure_posix(port_num, dd->blocking->err);
+ return; /* -1; */
+ }
+ return; /* 0; */
+}
+
+#endif
void erts_do_break_handling(void)
{
@@ -2648,18 +2857,30 @@ void sys_preload_end(Preload* p)
/* Nothing */
}
-/* Read a key from console (?) */
-
+/* Read a key from console, used by break.c
+ Here we assume that all schedulers are stopped so that erl_poll
+ does not interfere with the select below.
+*/
int sys_get_key(fd)
int fd;
{
- int c;
+ int c, ret;
unsigned char rbuf[64];
+ fd_set fds;
fflush(stdout); /* Flush query ??? */
- if ((c = read(fd,rbuf,64)) <= 0) {
- return c;
+ FD_ZERO(&fds);
+ FD_SET(fd,&fds);
+
+ ret = select(fd+1, &fds, NULL, NULL, NULL);
+
+ if (ret == 1) {
+ do {
+ c = read(fd,rbuf,64);
+ } while (c < 0 && errno == EAGAIN);
+ if (c <= 0)
+ return c;
}
return rbuf[0];
@@ -2983,13 +3204,6 @@ signal_dispatcher_thread_func(void *unused)
case '1': /* SIGUSR1 */
sigusr1_exit();
break;
-#ifdef QUANTIFY
- case '2': /* SIGUSR2 */
- quantify_save_data(); /* Might take a substantial amount of
- time, but this is a test/debug
- build */
- break;
-#endif
default:
erl_exit(ERTS_ABORT_EXIT,
"signal-dispatcher thread received unknown "
@@ -3007,6 +3221,7 @@ init_smp_sig_notify(void)
{
erts_smp_thr_opts_t thr_opts = ERTS_SMP_THR_OPTS_DEFAULT_INITER;
thr_opts.detached = 1;
+ thr_opts.name = "sys_sig_dispatcher";
if (pipe(sig_notify_fds) < 0) {
erl_exit(ERTS_ABORT_EXIT,
@@ -3021,6 +3236,17 @@ init_smp_sig_notify(void)
NULL,
&thr_opts);
}
+
+static void
+init_smp_sig_suspend(void) {
+ if (pipe(sig_suspend_fds) < 0) {
+ erl_exit(ERTS_ABORT_EXIT,
+ "Failed to create sig_suspend pipe: %s (%d)\n",
+ erl_errno_id(errno),
+ errno);
+ }
+}
+
#ifdef __DARWIN__
int erts_darwin_main_thread_pipe[2];
@@ -3048,9 +3274,11 @@ erts_sys_main_thread(void)
#endif
smp_sig_notify(0); /* Notify initialized */
- while (1) {
- /* Wait for a signal to arrive... */
+
+ /* Wait for a signal to arrive... */
+
#ifdef __DARWIN__
+ while (1) {
/*
* The wx driver needs to be able to steal the main thread for Cocoa to
* work properly.
@@ -3065,12 +3293,24 @@ erts_sys_main_thread(void)
void* (*func)(void*);
void* arg;
void *resp;
- read(erts_darwin_main_thread_pipe[0],&func,sizeof(void* (*)(void*)));
- read(erts_darwin_main_thread_pipe[0],&arg, sizeof(void*));
+ res = read(erts_darwin_main_thread_pipe[0],&func,sizeof(void* (*)(void*)));
+ if (res != sizeof(void* (*)(void*)))
+ break;
+ res = read(erts_darwin_main_thread_pipe[0],&arg,sizeof(void*));
+ if (res != sizeof(void*))
+ break;
resp = (*func)(arg);
write(erts_darwin_main_thread_result_pipe[1],&resp,sizeof(void *));
}
-#else
+
+ if (res == -1 && errno != EINTR)
+ break;
+ }
+ /* Something broke with the main thread pipe, so we ignore it for now.
+ Most probably erts has closed this pipe and is about to exit. */
+#endif /* #ifdef __DARWIN__ */
+
+ while (1) {
#ifdef DEBUG
int res =
#else
@@ -3079,7 +3319,6 @@ erts_sys_main_thread(void)
select(0, NULL, NULL, NULL, NULL);
ASSERT(res < 0);
ASSERT(errno == EINTR);
-#endif
}
}
@@ -3171,6 +3410,7 @@ erl_sys_args(int* argc, char** argv)
#ifdef ERTS_SMP
init_smp_sig_notify();
+ init_smp_sig_suspend();
#endif
/* Handled arguments have been marked with NULL. Slide arguments
diff --git a/erts/emulator/sys/unix/sys_float.c b/erts/emulator/sys/unix/sys_float.c
index cafeab547e..2ffa649767 100644
--- a/erts/emulator/sys/unix/sys_float.c
+++ b/erts/emulator/sys/unix/sys_float.c
@@ -32,7 +32,7 @@ void
erts_sys_init_float(void)
{
# ifdef SIGFPE
- sys_sigset(SIGFPE, SIG_IGN); /* Ignore so we can test for NaN and Inf */
+ sys_signal(SIGFPE, SIG_IGN); /* Ignore so we can test for NaN and Inf */
# endif
}
@@ -667,7 +667,7 @@ static void fpe_sig_handler(int sig)
static void erts_thread_catch_fp_exceptions(void)
{
- sys_sigset(SIGFPE, fpe_sig_handler);
+ sys_signal(SIGFPE, fpe_sig_handler);
unmask_fpe();
}
diff --git a/erts/emulator/sys/unix/sys_time.c b/erts/emulator/sys/unix/sys_time.c
index fcce54a2c4..d535457977 100644
--- a/erts/emulator/sys/unix/sys_time.c
+++ b/erts/emulator/sys/unix/sys_time.c
@@ -33,6 +33,21 @@
#include "sys.h"
#include "global.h"
+#include "erl_os_monotonic_time_extender.h"
+
+#undef ERTS_HAVE_ERTS_OS_TIMES_IMPL__
+#undef ERTS_HAVE_ERTS_SYS_HRTIME_IMPL__
+
+#if defined(OS_MONOTONIC_TIME_USING_MACH_CLOCK_GET_TIME) \
+ || defined(OS_SYSTEM_TIME_USING_MACH_CLOCK_GET_TIME)
+# include <mach/clock.h>
+# include <mach/mach.h>
+# ifdef HAVE_CLOCK_GET_ATTRIBUTES
+# define ERTS_HAVE_MACH_CLOCK_GETRES
+static Sint64
+mach_clock_getres(clock_id_t clkid, char *clkid_str);
+# endif
+#endif
#ifdef NO_SYSCONF
# define TICKS_PER_SEC() HZ
@@ -53,9 +68,23 @@
/******************* Routines for time measurement *********************/
-int erts_ticks_per_sec = 0; /* Will be SYS_CLK_TCK in erl_unix_sys.h */
-int erts_ticks_per_sec_wrap = 0; /* Will be SYS_CLK_TCK_WRAP */
-static int ticks_bsr = 0; /* Shift wrapped tick value this much to the right */
+#undef ERTS_SYS_TIME_INTERNAL_STATE_WRITE_FREQ__
+#undef ERTS_SYS_TIME_INTERNAL_STATE_READ_ONLY__
+#undef ERTS_SYS_TIME_INTERNAL_STATE_READ_MOSTLY__
+
+#if defined(OS_MONOTONIC_TIME_USING_TIMES)
+
+static Uint32
+get_tick_count(void)
+{
+ struct tms unused;
+ return (Uint32) times(&unused);
+}
+
+#define ERTS_SYS_TIME_INTERNAL_STATE_READ_ONLY__
+#define ERTS_SYS_TIME_INTERNAL_STATE_READ_MOSTLY__
+
+#endif
/*
* init timers, chose a tick length, and return it.
@@ -63,37 +92,713 @@ static int ticks_bsr = 0; /* Shift wrapped tick value this much to the right */
* does almost everything. Other platforms have to
* emulate Unix in this sense.
*/
-int sys_init_time(void)
+
+ErtsSysTimeData__ erts_sys_time_data__ erts_align_attribute(ERTS_CACHE_LINE_SIZE);
+
+#if defined(__linux__) && defined(OS_MONOTONIC_TIME_USING_CLOCK_GETTIME)
+
+#define ERTS_SYS_TIME_INTERNAL_STATE_WRITE_FREQ__
+
+static ErtsMonotonicTime clock_gettime_monotonic_raw(void);
+static ErtsMonotonicTime clock_gettime_monotonic_verified(void);
+#if defined(OS_SYSTEM_TIME_USING_CLOCK_GETTIME)
+static void clock_gettime_times_raw(ErtsMonotonicTime *, ErtsSystemTime *);
+static void clock_gettime_times_verified(ErtsMonotonicTime *, ErtsSystemTime *);
+#endif
+
+#endif /* defined(__linux__) && defined(OS_MONOTONIC_TIME_USING_CLOCK_GETTIME) */
+
+#ifdef ERTS_SYS_TIME_INTERNAL_STATE_READ_ONLY__
+struct sys_time_internal_state_read_only__ {
+#if defined(OS_MONOTONIC_TIME_USING_TIMES)
+ int times_shift;
+#endif
+};
+#endif
+
+#ifdef ERTS_SYS_TIME_INTERNAL_STATE_READ_MOSTLY__
+struct sys_time_internal_state_read_mostly__ {
+#if defined(OS_MONOTONIC_TIME_USING_TIMES)
+ ErtsOsMonotonicTimeExtendState os_mtime_xtnd;
+#endif
+};
+#endif
+
+#ifdef ERTS_SYS_TIME_INTERNAL_STATE_WRITE_FREQ__
+struct sys_time_internal_state_write_freq__ {
+ erts_smp_mtx_t mtx;
+#if defined(__linux__) && defined(OS_MONOTONIC_TIME_USING_CLOCK_GETTIME)
+ ErtsMonotonicTime last_delivered;
+#endif
+};
+#endif
+
+#if defined(ERTS_SYS_TIME_INTERNAL_STATE_READ_ONLY__) \
+ || defined(ERTS_SYS_TIME_INTERNAL_STATE_WRITE_FREQ__)
+static struct {
+#ifdef ERTS_SYS_TIME_INTERNAL_STATE_READ_ONLY__
+ union {
+ struct sys_time_internal_state_read_only__ o;
+ char align__[(((sizeof(struct sys_time_internal_state_read_only__) - 1)
+ / ASSUMED_CACHE_LINE_SIZE) + 1)
+ * ASSUMED_CACHE_LINE_SIZE];
+ } r;
+#endif
+#ifdef ERTS_SYS_TIME_INTERNAL_STATE_READ_MOSTLY__
+ union {
+ struct sys_time_internal_state_read_mostly__ m;
+ char align__[(((sizeof(struct sys_time_internal_state_read_mostly__) - 1)
+ / ASSUMED_CACHE_LINE_SIZE) + 1)
+ * ASSUMED_CACHE_LINE_SIZE];
+ } wr;
+#endif
+#ifdef ERTS_SYS_TIME_INTERNAL_STATE_WRITE_FREQ__
+ union {
+ struct sys_time_internal_state_write_freq__ f;
+ char align__[(((sizeof(struct sys_time_internal_state_write_freq__) - 1)
+ / ASSUMED_CACHE_LINE_SIZE) + 1)
+ * ASSUMED_CACHE_LINE_SIZE];
+ } w;
+#endif
+} internal_state erts_align_attribute(ERTS_CACHE_LINE_SIZE);
+#endif
+
+void
+sys_init_time(ErtsSysInitTimeResult *init_resp)
{
+#if !defined(ERTS_HAVE_OS_MONOTONIC_TIME_SUPPORT)
+
+ init_resp->have_os_monotonic_time = 0;
+
+#else /* defined(ERTS_HAVE_OS_MONOTONIC_TIME_SUPPORT) */
+
+ int major, minor, build, vsn;
+
+ init_resp->os_monotonic_time_info.resolution = (Uint64) 1000*1000*1000;
+#if defined(HAVE_CLOCK_GETRES) && defined(MONOTONIC_CLOCK_ID)
+ {
+ struct timespec ts;
+ if (clock_getres(MONOTONIC_CLOCK_ID, &ts) == 0) {
+ if (ts.tv_sec == 0 && ts.tv_nsec != 0)
+ init_resp->os_monotonic_time_info.resolution /= ts.tv_nsec;
+ else if (ts.tv_sec >= 1)
+ init_resp->os_monotonic_time_info.resolution = 1;
+ }
+ }
+#elif defined(ERTS_HAVE_MACH_CLOCK_GETRES) && defined(MONOTONIC_CLOCK_ID)
+ init_resp->os_monotonic_time_info.resolution
+ = mach_clock_getres(MONOTONIC_CLOCK_ID, MONOTONIC_CLOCK_ID_STR);
+#endif
+
+#ifdef MONOTONIC_CLOCK_ID_STR
+ init_resp->os_monotonic_time_info.clock_id = MONOTONIC_CLOCK_ID_STR;
+#else
+ init_resp->os_monotonic_time_info.clock_id = NULL;
+#endif
+
+ init_resp->os_monotonic_time_info.locked_use = 0;
+
+#if defined(OS_MONOTONIC_TIME_USING_CLOCK_GETTIME)
+ init_resp->os_monotonic_time_info.func = "clock_gettime";
+#elif defined(OS_MONOTONIC_TIME_USING_MACH_CLOCK_GET_TIME)
+ init_resp->os_monotonic_time_info.func = "clock_get_time";
+#elif defined(OS_MONOTONIC_TIME_USING_GETHRTIME)
+ init_resp->os_monotonic_time_info.func = "gethrtime";
+#elif defined(OS_MONOTONIC_TIME_USING_TIMES)
+ init_resp->os_monotonic_time_info.func = "times";
+#else
+# error Unknown erts_os_monotonic_time() implementation
+#endif
+
+ init_resp->have_os_monotonic_time = 1;
+
+ os_version(&major, &minor, &build);
+
+ vsn = ERTS_MK_VSN_INT(major, minor, build);
+
+
+#if defined(__linux__) && defined(OS_MONOTONIC_TIME_USING_CLOCK_GETTIME)
+ if (vsn >= ERTS_MK_VSN_INT(2, 6, 33)) {
+ erts_sys_time_data__.r.o.os_monotonic_time =
+ clock_gettime_monotonic_raw;
+#if defined(OS_SYSTEM_TIME_USING_CLOCK_GETTIME)
+ erts_sys_time_data__.r.o.os_times =
+ clock_gettime_times_raw;
+#endif
+ }
+ else {
+ /*
+ * Linux versions prior to 2.6.33 have a
+ * known bug that sometimes cause monotonic
+ * time to take small steps backwards.
+ */
+ erts_sys_time_data__.r.o.os_monotonic_time =
+ clock_gettime_monotonic_verified;
+#if defined(OS_SYSTEM_TIME_USING_CLOCK_GETTIME)
+ erts_sys_time_data__.r.o.os_times =
+ clock_gettime_times_verified;
+#endif
+ erts_smp_mtx_init(&internal_state.w.f.mtx,
+ "os_monotonic_time");
+ internal_state.w.f.last_delivered
+ = clock_gettime_monotonic_raw();
+ init_resp->os_monotonic_time_info.locked_use = 1;
+ }
+#else /* !(defined(__linux__) && defined(OS_MONOTONIC_TIME_USING_CLOCK_GETTIME)) */
+ {
+ char flavor[1024];
+
+ os_flavor(flavor, sizeof(flavor));
+
+ if (sys_strcmp(flavor, "sunos") == 0) {
+ /*
+ * Don't trust hrtime on multi processors
+ * on SunOS prior to SunOS 5.8
+ */
+ if (vsn < ERTS_MK_VSN_INT(5, 8, 0)) {
+#if defined(HAVE_SYSCONF) && defined(_SC_NPROCESSORS_CONF)
+ if (sysconf(_SC_NPROCESSORS_CONF) > 1)
+#endif
+ init_resp->have_os_monotonic_time = 0;
+ }
+ }
+ }
+#endif /* !(defined(__linux__) && defined(OS_MONOTONIC_TIME_USING_CLOCK_GETTIME)) */
+
+#endif /* defined(ERTS_HAVE_OS_MONOTONIC_TIME_SUPPORT) */
+
+#ifdef ERTS_COMPILE_TIME_MONOTONIC_TIME_UNIT
+ init_resp->os_monotonic_time_unit = ERTS_COMPILE_TIME_MONOTONIC_TIME_UNIT;
+#endif
+ init_resp->sys_clock_resolution = SYS_CLOCK_RESOLUTION;
+
/*
- * This (erts_ticks_per_sec) is only for times() (CLK_TCK),
- * the resolution is always one millisecond..
+ * This (erts_sys_time_data__.r.o.ticks_per_sec) is only for
+ * times() (CLK_TCK), the resolution is always one millisecond..
*/
- if ((erts_ticks_per_sec = TICKS_PER_SEC()) < 0)
- erl_exit(1, "Can't get clock ticks/sec\n");
- if (erts_ticks_per_sec >= 1000) {
- /* Workaround for beta linux kernels, need to be done in runtime
- to make erlang run on both 2.4 and 2.5 kernels. In the future,
- the kernel ticks might as
- well be used as a high res timer instead, but that's for when the
- majority uses kernels with HZ == 1024 */
- ticks_bsr = 3;
- } else {
- ticks_bsr = 0;
+ if ((erts_sys_time_data__.r.o.ticks_per_sec = TICKS_PER_SEC()) < 0)
+ erl_exit(ERTS_ABORT_EXIT, "Can't get clock ticks/sec\n");
+
+#if defined(OS_MONOTONIC_TIME_USING_TIMES)
+#if ERTS_COMPILE_TIME_MONOTONIC_TIME_UNIT
+# error Time unit is supposed to be determined at runtime...
+#endif
+ {
+ ErtsMonotonicTime resolution = erts_sys_time_data__.r.o.ticks_per_sec;
+ ErtsMonotonicTime time_unit = resolution;
+ int shift = 0;
+
+ while (time_unit < 1000*1000) {
+ time_unit <<= 1;
+ shift++;
+ }
+
+ init_resp->os_monotonic_time_info.resolution = resolution;
+ init_resp->os_monotonic_time_unit = time_unit;
+ init_resp->os_monotonic_time_info.extended = 1;
+ internal_state.r.o.times_shift = shift;
+
+ erts_init_os_monotonic_time_extender(&internal_state.wr.m.os_mtime_xtnd,
+ get_tick_count,
+ (1 << 29) / resolution);
}
- erts_ticks_per_sec_wrap = (erts_ticks_per_sec >> ticks_bsr);
- return SYS_CLOCK_RESOLUTION;
+#endif /* defined(OS_MONOTONIC_TIME_USING_TIMES) */
+
+#ifdef WALL_CLOCK_ID_STR
+ init_resp->os_system_time_info.clock_id = WALL_CLOCK_ID_STR;
+#else
+ init_resp->os_system_time_info.clock_id = NULL;
+#endif
+
+ init_resp->os_system_time_info.locked_use = 0;
+ init_resp->os_system_time_info.resolution = (Uint64) 1000*1000*1000;
+#if defined(HAVE_CLOCK_GETRES) && defined(WALL_CLOCK_ID)
+ {
+ struct timespec ts;
+ if (clock_getres(WALL_CLOCK_ID, &ts) == 0) {
+ if (ts.tv_sec == 0 && ts.tv_nsec != 0)
+ init_resp->os_system_time_info.resolution /= ts.tv_nsec;
+ else if (ts.tv_sec >= 1)
+ init_resp->os_system_time_info.resolution = 1;
+ }
+ }
+#elif defined(ERTS_HAVE_MACH_CLOCK_GETRES) && defined(WALL_CLOCK_ID)
+ init_resp->os_system_time_info.resolution
+ = mach_clock_getres(WALL_CLOCK_ID, WALL_CLOCK_ID_STR);
+#endif
+
+#if defined(OS_SYSTEM_TIME_USING_CLOCK_GETTIME)
+ init_resp->os_system_time_info.func = "clock_gettime";
+#elif defined(OS_SYSTEM_TIME_USING_MACH_CLOCK_GET_TIME)
+ init_resp->os_system_time_info.func = "clock_get_time";
+#elif defined(OS_SYSTEM_TIME_GETTIMEOFDAY)
+ init_resp->os_system_time_info.func = "gettimeofday";
+ init_resp->os_system_time_info.resolution = 1000*1000;
+ init_resp->os_system_time_info.clock_id = NULL;
+#else
+# error Missing erts_os_system_time() implementation
+#endif
+
+}
+
+void
+erts_late_sys_init_time(void)
+{
+#if defined(OS_MONOTONIC_TIME_USING_TIMES)
+ erts_late_init_os_monotonic_time_extender(&internal_state.wr.m.os_mtime_xtnd);
+#endif
}
-clock_t sys_times_wrap(void)
+static ERTS_INLINE ErtsSystemTime
+adj_stime_time_unit(ErtsSystemTime stime, Uint32 res)
{
- SysTimes dummy;
- clock_t result = (sys_times(&dummy) >> ticks_bsr);
- return result;
+ if (res == ERTS_COMPILE_TIME_MONOTONIC_TIME_UNIT)
+ return stime;
+ if (res == (Uint32) 1000*1000*1000
+ && ERTS_COMPILE_TIME_MONOTONIC_TIME_UNIT == 1000*1000)
+ return stime/1000;
+ if (res == (Uint32) 1000*1000
+ && ERTS_COMPILE_TIME_MONOTONIC_TIME_UNIT == 1000*1000*1000)
+ return stime*1000;
+ return ((ErtsSystemTime)
+ erts_time_unit_conversion(stime,
+ (Uint32) res,
+ (Uint32) ERTS_MONOTONIC_TIME_UNIT));
}
+/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *\
+ * POSIX clock_gettime() *
+\* */
+#if defined(OS_MONOTONIC_TIME_USING_CLOCK_GETTIME) \
+ || defined(OS_SYSTEM_TIME_USING_CLOCK_GETTIME)
+
+static ERTS_INLINE ErtsMonotonicTime
+timespec2montime(struct timespec *ts)
+{
+ ErtsMonotonicTime time;
+ time = (ErtsMonotonicTime) ts->tv_sec;
+ time *= (ErtsMonotonicTime) 1000*1000*1000;
+ time += (ErtsMonotonicTime) ts->tv_nsec;
+ return time;
+}
+
+static ERTS_INLINE ErtsMonotonicTime
+posix_clock_gettime(clockid_t id, char *name)
+{
+ struct timespec ts;
+
+ if (clock_gettime(id, &ts) != 0) {
+ int err = errno;
+ char *errstr = err ? strerror(err) : "unknown";
+ erl_exit(ERTS_ABORT_EXIT,
+ "clock_gettime(%s, _) failed: %s (%d)\n",
+ name, errstr, err);
+ }
+ return timespec2montime(&ts);
+}
+
+#endif /* defined(OS_MONOTONIC_TIME_USING_CLOCK_GETTIME) \
+ || defined(OS_SYSTEM_TIME_USING_CLOCK_GETTIME) */
+
+#if defined(OS_SYSTEM_TIME_USING_CLOCK_GETTIME)
+
+ErtsSystemTime
+erts_os_system_time(void)
+{
+ ErtsSystemTime stime;
+
+ stime = (ErtsSystemTime) posix_clock_gettime(WALL_CLOCK_ID,
+ WALL_CLOCK_ID_STR);
+ return adj_stime_time_unit(stime, (Uint32) 1000*1000*1000);
+}
+
+#endif /* defined(OS_SYSTEM_TIME_USING_CLOCK_GETTIME) */
+
+#if defined(OS_MONOTONIC_TIME_USING_CLOCK_GETTIME)
+
+#if defined(OS_SYSTEM_TIME_USING_CLOCK_GETTIME)
+
+#define ERTS_HAVE_ERTS_OS_TIMES_IMPL__
+
+static ERTS_INLINE void
+posix_clock_gettime_times(ErtsMonotonicTime *mtimep,
+ ErtsSystemTime *stimep)
+{
+ struct timespec mts, sts;
+ int mres, sres, merr, serr;
+
+ mres = clock_gettime(MONOTONIC_CLOCK_ID, &mts);
+ merr = errno;
+ sres = clock_gettime(WALL_CLOCK_ID, &sts);
+ serr = errno;
+
+ if (mres != 0) {
+ char *errstr = merr ? strerror(merr) : "unknown";
+ erl_exit(ERTS_ABORT_EXIT,
+ "clock_gettime(%s, _) failed: %s (%d)\n",
+ MONOTONIC_CLOCK_ID_STR, errstr, merr);
+ }
+ if (sres != 0) {
+ char *errstr = serr ? strerror(serr) : "unknown";
+ erl_exit(ERTS_ABORT_EXIT,
+ "clock_gettime(%s, _) failed: %s (%d)\n",
+ WALL_CLOCK_ID_STR, errstr, serr);
+ }
+
+ *mtimep = timespec2montime(&mts);
+ *stimep = (ErtsSystemTime) timespec2montime(&sts);
+}
+
+#endif /* defined(OS_SYSTEM_TIME_USING_CLOCK_GETTIME) */
+
+#if defined(__linux__)
+
+static ErtsMonotonicTime clock_gettime_monotonic_verified(void)
+{
+ ErtsMonotonicTime mtime = posix_clock_gettime(MONOTONIC_CLOCK_ID,
+ MONOTONIC_CLOCK_ID_STR);
+
+ erts_smp_mtx_lock(&internal_state.w.f.mtx);
+ if (mtime < internal_state.w.f.last_delivered)
+ mtime = internal_state.w.f.last_delivered;
+ else
+ internal_state.w.f.last_delivered = mtime;
+ erts_smp_mtx_unlock(&internal_state.w.f.mtx);
+
+ return mtime;
+}
+
+#if defined(OS_SYSTEM_TIME_USING_CLOCK_GETTIME)
+
+static void clock_gettime_times_verified(ErtsMonotonicTime *mtimep,
+ ErtsSystemTime *stimep)
+{
+ posix_clock_gettime_times(mtimep, stimep);
+
+ erts_smp_mtx_lock(&internal_state.w.f.mtx);
+ if (*mtimep < internal_state.w.f.last_delivered)
+ *mtimep = internal_state.w.f.last_delivered;
+ else
+ internal_state.w.f.last_delivered = *mtimep;
+ erts_smp_mtx_unlock(&internal_state.w.f.mtx);
+}
+
+#endif /* defined(OS_SYSTEM_TIME_USING_CLOCK_GETTIME) */
+
+static ErtsMonotonicTime clock_gettime_monotonic_raw(void)
+{
+ return posix_clock_gettime(MONOTONIC_CLOCK_ID,
+ MONOTONIC_CLOCK_ID_STR);
+}
+
+#if defined(OS_SYSTEM_TIME_USING_CLOCK_GETTIME)
+
+static void clock_gettime_times_raw(ErtsMonotonicTime *mtimep,
+ ErtsSystemTime *stimep)
+{
+ posix_clock_gettime_times(mtimep, stimep);
+}
+
+#endif /* defined(OS_SYSTEM_TIME_USING_CLOCK_GETTIME) */
+
+#else /* !defined(__linux__) */
+
+ErtsMonotonicTime erts_os_monotonic_time(void)
+{
+ return posix_clock_gettime(MONOTONIC_CLOCK_ID,
+ MONOTONIC_CLOCK_ID_STR);
+}
+
+#if defined(OS_SYSTEM_TIME_USING_CLOCK_GETTIME)
+
+void erts_os_times(ErtsMonotonicTime *mtimep, ErtsSystemTime *stimep)
+{
+ posix_clock_gettime_times(mtimep, stimep);
+}
+
+#endif /* defined(OS_SYSTEM_TIME_USING_CLOCK_GETTIME) */
+
+#endif /* !defined(__linux__) */
+
+#define ERTS_HAVE_ERTS_SYS_HRTIME_IMPL__
+
+ErtsSysHrTime
+erts_sys_hrtime(void)
+{
+ return (ErtsSysHrTime) posix_clock_gettime(MONOTONIC_CLOCK_ID,
+ MONOTONIC_CLOCK_ID_STR);
+}
+
+#endif /* defined(OS_MONOTONIC_TIME_USING_CLOCK_GETTIME) */
+
+/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *\
+ * MACH clock_get_time() *
+\* */
+
+#if defined(OS_MONOTONIC_TIME_USING_MACH_CLOCK_GET_TIME) \
+ || defined(OS_SYSTEM_TIME_USING_MACH_CLOCK_GET_TIME)
+
+#ifdef ERTS_HAVE_MACH_CLOCK_GETRES
+
+static Sint64
+mach_clock_getres(clock_id_t clkid, char *clkid_str)
+{
+ mach_port_t task;
+ host_name_port_t host;
+ natural_t attr[1];
+ kern_return_t kret;
+ clock_serv_t clk_srv;
+ mach_msg_type_number_t cnt;
+
+ host = mach_host_self();
+ kret = host_get_clock_service(host, clkid, &clk_srv);
+ if (kret != KERN_SUCCESS) {
+ erl_exit(ERTS_ABORT_EXIT,
+ "host_get_clock_service(_, %s, _) failed\n",
+ clkid_str);
+ }
+
+ cnt = sizeof(attr);
+ kret = clock_get_attributes(clk_srv, CLOCK_GET_TIME_RES, (clock_attr_t) attr, &cnt);
+ if (kret != KERN_SUCCESS) {
+ erl_exit(ERTS_ABORT_EXIT,
+ "clock_get_attributes(%s, _) failed\n",
+ clkid_str);
+ }
+ task = mach_task_self();
+ mach_port_deallocate(task, host);
+ mach_port_deallocate(task, clk_srv);
+
+ return (Sint64) attr[0];
+}
+
+#endif /* ERTS_HAVE_MACH_CLOCK_GETRES */
+
+static ERTS_INLINE Sint64
+mach_clock_gettime(clock_id_t clkid, char *clkid_str)
+{
+ Sint64 time;
+ mach_port_t task;
+ host_name_port_t host;
+ kern_return_t kret;
+ clock_serv_t clk_srv;
+ mach_timespec_t time_spec;
+
+ host = mach_host_self();
+ kret = host_get_clock_service(host, clkid, &clk_srv);
+ if (kret != KERN_SUCCESS) {
+ erl_exit(ERTS_ABORT_EXIT,
+ "host_get_clock_service(_, %s, _) failed\n",
+ clkid_str);
+ }
+ errno = 0;
+ kret = clock_get_time(clk_srv, &time_spec);
+ if (kret != KERN_SUCCESS) {
+ erl_exit(ERTS_ABORT_EXIT,
+ "clock_get_time(%s, _) failed\n",
+ clkid_str);
+ }
+ task = mach_task_self();
+ mach_port_deallocate(task, host);
+ mach_port_deallocate(task, clk_srv);
+
+ time = (Sint64) time_spec.tv_sec;
+ time *= (Sint64) 1000*1000*1000;
+ time += (Sint64) time_spec.tv_nsec;
+ return time;
+}
+
+#endif /* defined(OS_MONOTONIC_TIME_USING_MACH_CLOCK_GET_TIME) \
+ || defined(OS_SYSTEM_TIME_USING_MACH_CLOCK_GET_TIME) */
+
+#if defined(OS_SYSTEM_TIME_USING_MACH_CLOCK_GET_TIME)
+
+#define ERTS_HAVE_ERTS_OS_TIMES_IMPL__
+
+ErtsSystemTime
+erts_os_system_time(void)
+{
+ ErtsSystemTime stime;
+ stime = (ErtsSystemTime) mach_clock_gettime(WALL_CLOCK_ID,
+ WALL_CLOCK_ID_STR);
+ return adj_stime_time_unit(stime, (Uint32) 1000*1000*1000);
+}
+
+#endif /* defined(OS_SYSTEM_TIME_USING_MACH_CLOCK_GET_TIME) */
+
+#if defined(OS_MONOTONIC_TIME_USING_MACH_CLOCK_GET_TIME)
+
+ErtsMonotonicTime
+erts_os_monotonic_time(void)
+{
+ return (ErtsMonotonicTime) mach_clock_gettime(MONOTONIC_CLOCK_ID,
+ MONOTONIC_CLOCK_ID_STR);
+}
+
+#define ERTS_HAVE_ERTS_SYS_HRTIME_IMPL__
+
+ErtsSysHrTime
+erts_sys_hrtime(void)
+{
+ return (ErtsMonotonicTime) mach_clock_gettime(MONOTONIC_CLOCK_ID,
+ MONOTONIC_CLOCK_ID_STR);
+}
+
+#if defined(OS_SYSTEM_TIME_USING_MACH_CLOCK_GET_TIME)
+
+#define ERTS_HAVE_ERTS_OS_TIMES_IMPL__
+
+void
+erts_os_times(ErtsMonotonicTime *mtimep, ErtsSystemTime *stimep)
+{
+ ErtsMonotonicTime mtime;
+ ErtsSystemTime stime;
+ mach_port_t task;
+ host_name_port_t host;
+ kern_return_t mkret, skret;
+ clock_serv_t mclk_srv, sclk_srv;
+ mach_timespec_t mon_time_spec, sys_time_spec;
+
+ host = mach_host_self();
+ mkret = host_get_clock_service(host, MONOTONIC_CLOCK_ID, &mclk_srv);
+ skret = host_get_clock_service(host, WALL_CLOCK_ID, &sclk_srv);
+ if (mkret != KERN_SUCCESS) {
+ erl_exit(ERTS_ABORT_EXIT,
+ "host_get_clock_service(_, %s, _) failed\n",
+ MONOTONIC_CLOCK_ID);
+ }
+ if (skret != KERN_SUCCESS) {
+ erl_exit(ERTS_ABORT_EXIT,
+ "host_get_clock_service(_, %s, _) failed\n",
+ WALL_CLOCK_ID);
+ }
+ mkret = clock_get_time(mclk_srv, &mon_time_spec);
+ skret = clock_get_time(sclk_srv, &sys_time_spec);
+ if (mkret != KERN_SUCCESS) {
+ erl_exit(ERTS_ABORT_EXIT,
+ "clock_get_time(%s, _) failed\n",
+ MONOTONIC_CLOCK_ID);
+ }
+ if (skret != KERN_SUCCESS) {
+ erl_exit(ERTS_ABORT_EXIT,
+ "clock_get_time(%s, _) failed\n",
+ WALL_CLOCK_ID);
+ }
+ task = mach_task_self();
+ mach_port_deallocate(task, host);
+ mach_port_deallocate(task, mclk_srv);
+ mach_port_deallocate(task, sclk_srv);
+
+ mtime = (ErtsMonotonicTime) mon_time_spec.tv_sec;
+ mtime *= (ErtsMonotonicTime) 1000*1000*1000;
+ mtime += (ErtsMonotonicTime) mon_time_spec.tv_nsec;
+ stime = (ErtsSystemTime) sys_time_spec.tv_sec;
+ stime *= (ErtsSystemTime) 1000*1000*1000;
+ stime += (ErtsSystemTime) sys_time_spec.tv_nsec;
+ *mtimep = mtime;
+ *stimep = stime;
+}
+
+#endif /* defined(OS_SYSTEM_TIME_USING_MACH_CLOCK_GET_TIME) */
+
+#endif /* defined(OS_MONOTONIC_TIME_USING_MACH_CLOCK_GET_TIME) */
+
+/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *\
+ * Solaris gethrtime() - OS monotonic time *
+\* */
+
+#if defined(OS_MONOTONIC_TIME_USING_GETHRTIME)
+
+ErtsMonotonicTime erts_os_monotonic_time(void)
+{
+ return (ErtsMonotonicTime) gethrtime();
+}
+
+#define ERTS_HAVE_ERTS_SYS_HRTIME_IMPL__
+
+ErtsSysHrTime
+erts_sys_hrtime(void)
+{
+ return (ErtsSysHrTime) gethrtime();
+}
+
+#endif /* defined(OS_MONOTONIC_TIME_USING_GETHRTIME) */
+
+/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *\
+ * gettimeofday() - OS system time *
+\* */
+
+#if defined(OS_SYSTEM_TIME_GETTIMEOFDAY)
+
+ErtsSystemTime
+erts_os_system_time(void)
+{
+ ErtsSystemTime stime;
+ struct timeval tv;
+
+ if (gettimeofday(&tv, NULL) != 0) {
+ int err = errno;
+ char *errstr = err ? strerror(err) : "unknown";
+ erl_exit(ERTS_ABORT_EXIT,
+ "gettimeofday(_, NULL) failed: %s (%d)\n",
+ errstr, err);
+ }
+
+ stime = (ErtsSystemTime) tv.tv_sec;
+ stime *= (ErtsSystemTime) 1000*1000;
+ stime += (ErtsSystemTime) tv.tv_usec;
+
+ return adj_stime_time_unit(stime, (Uint32) 1000*1000);
+}
+
+#endif /* defined(OS_SYSTEM_TIME_GETTIMEOFDAY) */
+
+/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *\
+ * times() - OS monotonic time *
+\* */
+
+#if defined(OS_MONOTONIC_TIME_USING_TIMES)
+
+ErtsMonotonicTime
+erts_os_monotonic_time(void)
+{
+ Uint32 ticks = get_tick_count();
+ ERTS_CHK_EXTEND_OS_MONOTONIC_TIME(&internal_state.wr.m.os_mtime_xtnd,
+ ticks);
+ return ERTS_EXTEND_OS_MONOTONIC_TIME(&internal_state.wr.m.os_mtime_xtnd,
+ ticks) << internal_state.r.o.times_shift;
+}
+
+#endif
+
+/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *\
+ * Fallbacks *
+\* */
+
+#ifndef ERTS_HAVE_ERTS_SYS_HRTIME_IMPL__
+
+ErtsSysHrTime
+erts_sys_hrtime(void)
+{
+ return (ErtsSysHrTime) ERTS_MONOTONIC_TO_NSEC(erts_os_system_time());
+}
+
+#endif
+
+#if !defined(ERTS_HAVE_ERTS_OS_TIMES_IMPL__) \
+ && defined(ERTS_HAVE_OS_MONOTONIC_TIME_SUPPORT)
+
+void
+erts_os_times(ErtsMonotonicTime *mtimep, ErtsSystemTime *stimep)
+{
+ *mtimep = erts_os_monotonic_time();
+ *stimep = erts_os_system_time();
+}
+
+#endif
+/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
#ifdef HAVE_GETHRVTIME_PROCFS_IOCTL
diff --git a/erts/emulator/sys/win32/erl_poll.c b/erts/emulator/sys/win32/erl_poll.c
index 972170d465..5a62b00a68 100644
--- a/erts/emulator/sys/win32/erl_poll.c
+++ b/erts/emulator/sys/win32/erl_poll.c
@@ -285,7 +285,7 @@ struct ErtsPollSet_ {
#ifdef ERTS_SMP
erts_smp_mtx_t mtx;
#endif
- erts_smp_atomic32_t timeout;
+ erts_atomic64_t timeout_time;
};
#ifdef ERTS_SMP
@@ -363,6 +363,26 @@ do { \
wait_standby(PS); \
} while(0)
+static ERTS_INLINE void
+init_timeout_time(ErtsPollSet ps)
+{
+ erts_atomic64_init_nob(&ps->timeout_time,
+ (erts_aint64_t) ERTS_MONOTONIC_TIME_MAX);
+}
+
+static ERTS_INLINE void
+set_timeout_time(ErtsPollSet ps, ErtsMonotonicTime time)
+{
+ erts_atomic64_set_relb(&ps->timeout_time,
+ (erts_aint64_t) time);
+}
+
+static ERTS_INLINE ErtsMonotonicTime
+get_timeout_time(ErtsPollSet ps)
+{
+ return (ErtsMonotonicTime) erts_atomic64_read_acqb(&ps->timeout_time);
+}
+
#define ERTS_POLL_NOT_WOKEN ((erts_aint32_t) 0)
#define ERTS_POLL_WOKEN_IO_READY ((erts_aint32_t) 1)
#define ERTS_POLL_WOKEN_INTR ((erts_aint32_t) 2)
@@ -422,15 +442,29 @@ wakeup_cause(ErtsPollSet ps)
}
static ERTS_INLINE DWORD
-poll_wait_timeout(ErtsPollSet ps, SysTimeval *tvp)
+poll_wait_timeout(ErtsPollSet ps, ErtsMonotonicTime timeout_time)
{
- time_t timeout = tvp->tv_sec * 1000 + tvp->tv_usec / 1000;
+ ErtsMonotonicTime current_time, diff_time, timeout;
- if (timeout <= 0) {
+ if (timeout_time == ERTS_POLL_NO_TIMEOUT) {
+ no_timeout:
+ set_timeout_time(ps, ERTS_MONOTONIC_TIME_MIN);
woke_up(ps);
return (DWORD) 0;
}
+ current_time = erts_get_monotonic_time();
+ diff_time = timeout_time - current_time;
+ if (diff_time <= 0)
+ goto no_timeout;
+
+ /* Round up to nearest milli second */
+ timeout = (ERTS_MONOTONIC_TO_MSEC(diff_time - 1) + 1);
+ if (timeout > INT_MAX)
+ timeout = INT_MAX; /* Also prevents DWORD overflow */
+
+ set_timeout_time(ps, current_time + ERTS_MSEC_TO_MONOTONIC(timeout));
+
ResetEvent(ps->event_io_ready);
/*
* Since we don't know the internals of ResetEvent() we issue
@@ -442,10 +476,6 @@ poll_wait_timeout(ErtsPollSet ps, SysTimeval *tvp)
if (erts_atomic32_read_nob(&ps->wakeup_state) != ERTS_POLL_NOT_WOKEN)
return (DWORD) 0;
- if (timeout > ((time_t) ERTS_AINT32_T_MAX))
- timeout = ERTS_AINT32_T_MAX; /* Also prevents DWORD overflow */
-
- erts_smp_atomic32_set_relb(&ps->timeout, (erts_aint32_t) timeout);
return (DWORD) timeout;
}
@@ -1012,12 +1042,12 @@ void erts_poll_interrupt(ErtsPollSet ps, int set /* bool */)
void erts_poll_interrupt_timed(ErtsPollSet ps,
int set /* bool */,
- erts_short_time_t msec)
+ ErtsMonotonicTime timeout_time)
{
- HARDTRACEF(("In erts_poll_interrupt_timed(%d,%ld)",set,msec));
+ HARDTRACEF(("In erts_poll_interrupt_timed(%d,%ld)",set,timeout_time));
if (!set)
reset_interrupt(ps);
- else if (erts_smp_atomic32_read_acqb(&ps->timeout) > (erts_aint32_t) msec)
+ else if (get_timeout_time(ps) > timeout_time)
set_interrupt(ps);
HARDTRACEF(("Out erts_poll_interrupt_timed"));
}
@@ -1092,7 +1122,7 @@ void erts_poll_controlv(ErtsPollSet ps,
int erts_poll_wait(ErtsPollSet ps,
ErtsPollResFd pr[],
int *len,
- SysTimeval *tvp)
+ ErtsMonotonicTime timeout_time)
{
int no_fds;
DWORD timeout;
@@ -1149,7 +1179,7 @@ int erts_poll_wait(ErtsPollSet ps,
no_fds = ERTS_POLL_MAX_RES;
#endif
- timeout = poll_wait_timeout(ps, tvp);
+ timeout = poll_wait_timeout(ps, timeout_time);
/*HARDDEBUGF(("timeout = %ld",(long) timeout));*/
@@ -1242,7 +1272,7 @@ int erts_poll_wait(ErtsPollSet ps,
erts_mtx_unlock(&w->mtx);
}
done:
- erts_smp_atomic32_set_nob(&ps->timeout, ERTS_AINT32_T_MAX);
+ set_timeout_time(ps, ERTS_MONOTONIC_TIME_MAX);
*len = num;
ERTS_POLLSET_UNLOCK(ps);
HARDTRACEF(("Out erts_poll_wait"));
@@ -1326,7 +1356,7 @@ ErtsPollSet erts_poll_create_pollset(void)
#ifdef ERTS_SMP
erts_smp_mtx_init(&ps->mtx, "pollset");
#endif
- erts_smp_atomic32_init_nob(&ps->timeout, ERTS_AINT32_T_MAX);
+ init_timeout_time(ps);
HARDTRACEF(("Out erts_poll_create_pollset"));
return ps;
diff --git a/erts/emulator/sys/win32/erl_win_sys.h b/erts/emulator/sys/win32/erl_win_sys.h
index 905dcb6b69..714e7357d4 100644
--- a/erts/emulator/sys/win32/erl_win_sys.h
+++ b/erts/emulator/sys/win32/erl_win_sys.h
@@ -120,9 +120,6 @@
/*
* For erl_time_sup
*/
-#define HAVE_GETHRTIME
-
-#define sys_init_hrtime() /* Nothing */
#define SYS_CLK_TCK 1000
#define SYS_CLOCK_RESOLUTION 1
@@ -164,18 +161,81 @@ typedef struct {
#if defined (__GNUC__)
typedef unsigned long long Uint64;
typedef long long Sint64;
-
-typedef long long SysHrTime;
+# ifdef ULLONG_MAX
+# define ERTS_UINT64_MAX ULLONG_MAX
+# endif
+# ifdef LLONG_MAX
+# define ERTS_SINT64_MAX LLONG_MAX
+# endif
+# ifdef LLONG_MIN
+# define ERTS_SINT64_MIN LLONG_MIN
+# endif
+
+typedef long long ErtsMonotonicTime;
+typedef long long ErtsSysHrTime;
#else
typedef ULONGLONG Uint64;
typedef LONGLONG Sint64;
-typedef LONGLONG SysHrTime;
+typedef LONGLONG ErtsMonotonicTime;
+typedef LONGLONG ErtsSysHrTime;
#endif
-extern int sys_init_time(void);
+typedef ErtsMonotonicTime ErtsSystemTime;
+
+ErtsSystemTime erts_os_system_time(void);
+
+#define ERTS_MONOTONIC_TIME_MIN (((ErtsMonotonicTime) 1) << 63)
+#define ERTS_MONOTONIC_TIME_MAX (~ERTS_MONOTONIC_TIME_MIN)
+
+#define ERTS_HAVE_OS_MONOTONIC_TIME_SUPPORT 1
+#define ERTS_COMPILE_TIME_MONOTONIC_TIME_UNIT 0
+
+struct erts_sys_time_read_only_data__ {
+ ErtsMonotonicTime (*os_monotonic_time)(void);
+ void (*os_times)(ErtsMonotonicTime *, ErtsSystemTime*);
+ ErtsSysHrTime (*sys_hrtime)(void);
+};
+
+typedef struct {
+ union {
+ struct erts_sys_time_read_only_data__ o;
+ char align__[(((sizeof(struct erts_sys_time_read_only_data__) - 1)
+ / ASSUMED_CACHE_LINE_SIZE) + 1)
+ * ASSUMED_CACHE_LINE_SIZE];
+ } r;
+} ErtsSysTimeData__;
+
+extern ErtsSysTimeData__ erts_sys_time_data__;
+
+ERTS_GLB_INLINE ErtsMonotonicTime erts_os_monotonic_time(void);
+ERTS_GLB_INLINE void erts_os_times(ErtsMonotonicTime *,
+ ErtsSystemTime *);
+ERTS_GLB_INLINE ErtsSysHrTime erts_sys_hrtime(void);
+
+#if ERTS_GLB_INLINE_INCL_FUNC_DEF
+
+ERTS_GLB_INLINE ErtsMonotonicTime
+erts_os_monotonic_time(void)
+{
+ return (*erts_sys_time_data__.r.o.os_monotonic_time)();
+}
+
+ERTS_GLB_INLINE void
+erts_os_times(ErtsMonotonicTime *mtimep, ErtsSystemTime *stimep)
+{
+ return (*erts_sys_time_data__.r.o.os_times)(mtimep, stimep);
+}
+
+ERTS_GLB_INLINE ErtsSysHrTime
+erts_sys_hrtime(void)
+{
+ return (*erts_sys_time_data__.r.o.sys_hrtime)();
+}
+
+#endif /* ERTS_GLB_INLINE_INCL_FUNC_DEF */
+
extern void sys_gettimeofday(SysTimeval *tv);
-extern SysHrTime sys_gethrtime(void);
extern clock_t sys_times(SysTimes *buffer);
extern char *win_build_environment(char *);
@@ -238,4 +298,16 @@ typedef long ssize_t;
int init_async(int);
int exit_async(void);
#endif
+
+#define ERTS_HAVE_TRY_CATCH 1
+
+#define ERTS_SYS_TRY_CATCH(EXPR,CATCH) \
+ __try { \
+ EXPR; \
+ } \
+ __except(GetExceptionCode() == EXCEPTION_ACCESS_VIOLATION ? EXCEPTION_EXECUTE_HANDLER : EXCEPTION_CONTINUE_SEARCH) \
+ { \
+ CATCH; \
+ }
+
#endif
diff --git a/erts/emulator/sys/win32/sys.c b/erts/emulator/sys/win32/sys.c
index 0ded6b274e..cf587af4ac 100644
--- a/erts/emulator/sys/win32/sys.c
+++ b/erts/emulator/sys/win32/sys.c
@@ -247,6 +247,27 @@ void erl_sys_args(int* argc, char** argv)
#endif
}
+/*
+ * Function returns 1 if we can read from all values in between
+ * start and stop.
+ */
+int
+erts_sys_is_area_readable(char *start, char *stop) {
+ volatile char tmp;
+ __try
+ {
+ while(start < stop) {
+ tmp = *start;
+ start++;
+ }
+ }
+ __except(EXCEPTION_EXECUTE_HANDLER)
+ {
+ return 0;
+ }
+ return 1;
+}
+
int erts_sys_prepare_crash_dump(int secs)
{
Port *heart_port;
@@ -1392,39 +1413,46 @@ int parse_command(wchar_t* cmd){
return i;
}
-static BOOL need_quotes(wchar_t *str)
-{
- int in_quote = 0;
- int backslashed = 0;
- int naked_space = 0;
- while (*str != L'\0') {
- switch (*str) {
- case L'\\' :
- backslashed = !backslashed;
- break;
- case L'"':
- if (backslashed) {
- backslashed=0;
- } else {
- in_quote = !in_quote;
- }
- break;
- case L' ':
- backslashed = 0;
- if (!(backslashed || in_quote)) {
- naked_space++;
- }
- break;
- default:
- backslashed = 0;
+/*
+ * Translating of command line arguments to correct format. In the examples
+ * below the '' are not part of the actual string.
+ * 'io:format("hello").' -> 'io:format(\"hello\").'
+ * 'io:format("is anybody in there?").' -> '"io:format(\"is anybody in there?\")."'
+ * 'Just nod if you can hear me.' -> '"Just nod if you can hear me."'
+ * 'Is there ""anyone at home?' -> '"Is there \"\"anyone at home?"'
+ * 'Relax."' -> 'Relax.\"'
+ *
+ * If new == NULL we just calculate the length.
+ *
+ * The reason for having to quote all of the is becasue CreateProcessW removes
+ * one level of escaping since it takes a single long command line rather
+ * than the argument chunks that unix uses.
+ */
+static int escape_and_quote(wchar_t *str, wchar_t *new, BOOL *quoted) {
+ int i, j = 0;
+ if (new == NULL)
+ *quoted = FALSE;
+ else if (*quoted)
+ new[j++] = L'"';
+ for ( i = 0; str[i] != L'\0'; i++,j++) {
+ if (str[i] == L' ' && new == NULL && *quoted == FALSE) {
+ *quoted = TRUE;
+ j++;
+ }
+ /* check if we have to escape quotes */
+ if (str[i] == L'"') {
+ if (new) new[j] = L'\\';
+ j++;
}
- ++str;
+ if (new) new[j] = str[i];
+ }
+ if (*quoted) {
+ if (new) new[j] = L'"';
+ j++;
}
- return (naked_space > 0);
+ return j;
}
-
-
/*
*----------------------------------------------------------------------
@@ -1585,31 +1613,24 @@ create_child_process
wcscpy(appname, execPath);
}
if (argv == NULL) {
- BOOL orig_need_q = need_quotes(execPath);
+ BOOL orig_need_q;
wchar_t *ptr;
- int ocl = wcslen(execPath);
+ int ocl = escape_and_quote(execPath, NULL, &orig_need_q);
if (run_cmd) {
newcmdline = (wchar_t *) erts_alloc(ERTS_ALC_T_TMP,
- (ocl + ((orig_need_q) ? 3 : 1)
- + 11)*sizeof(wchar_t));
+ (ocl + 1 + 11)*sizeof(wchar_t));
memcpy(newcmdline,L"cmd.exe /c ",11*sizeof(wchar_t));
ptr = newcmdline + 11;
} else {
newcmdline = (wchar_t *) erts_alloc(ERTS_ALC_T_TMP,
- (ocl + ((orig_need_q) ? 3 : 1))*sizeof(wchar_t));
+ (ocl + 1)*sizeof(wchar_t));
ptr = (wchar_t *) newcmdline;
}
- if (orig_need_q) {
- *ptr++ = L'"';
- }
- memcpy(ptr,execPath,ocl*sizeof(wchar_t));
- ptr += ocl;
- if (orig_need_q) {
- *ptr++ = L'"';
- }
- *ptr = L'\0';
+ ptr += escape_and_quote(execPath, ptr, &orig_need_q);
+ ptr[0] = L'\0';
} else {
- int sum = 1; /* '\0' */
+ int sum = 0;
+ BOOL *qte = NULL;
wchar_t **ar = argv;
wchar_t *n;
wchar_t *save_arg0 = NULL;
@@ -1620,11 +1641,13 @@ create_child_process
if (run_cmd) {
sum += 11; /* cmd.exe /c */
}
+
+ while (*ar != NULL) ar++;
+ qte = erts_alloc(ERTS_ALC_T_TMP, (ar - argv)*sizeof(BOOL));
+
+ ar = argv;
while (*ar != NULL) {
- sum += wcslen(*ar);
- if (need_quotes(*ar)) {
- sum += 2; /* quotes */
- }
+ sum += escape_and_quote(*ar,NULL,qte+(ar - argv));
sum++; /* space */
++ar;
}
@@ -1636,26 +1659,18 @@ create_child_process
n += 11;
}
while (*ar != NULL) {
- int q = need_quotes(*ar);
- sum = wcslen(*ar);
- if (q) {
- *n++ = L'"';
- }
- memcpy(n,*ar,sum*sizeof(wchar_t));
- n += sum;
- if (q) {
- *n++ = L'"';
- }
+ n += escape_and_quote(*ar,n,qte+(ar - argv));
*n++ = L' ';
++ar;
}
- *(n-1) = L'\0';
+ *(n-1) = L'\0'; /* overwrite last space with '\0' */
if (save_arg0 != NULL) {
argv[0] = save_arg0;
}
+ erts_free(ERTS_ALC_T_TMP, qte);
}
- DEBUGF(("Creating child process: %s, createFlags = %d\n", newcmdline, createFlags));
+ DEBUGF((stderr,"Creating child process: %S, createFlags = %d\n", newcmdline, createFlags));
ok = CreateProcessW((wchar_t *) appname,
(wchar_t *) newcmdline,
NULL,
@@ -2190,7 +2205,7 @@ static void fd_stop(ErlDrvData data)
ASSERT(dp->out.flushEvent);
SetEvent(dp->out.flushEvent);
} while (WaitForSingleObject(dp->out.flushReplyEvent, 10) == WAIT_TIMEOUT
- || !(dp->out.flags & DF_THREAD_FLUSHED));
+ && !(dp->out.flags & DF_THREAD_FLUSHED));
}
}
@@ -3157,25 +3172,31 @@ thr_create_prepare_child(void *vtcdp)
void
erts_sys_pre_init(void)
{
+#ifdef USE_THREADS
+ erts_thr_init_data_t eid = ERTS_THR_INIT_DATA_DEF_INITER;
+#endif
int_os_version.dwOSVersionInfoSize = sizeof(OSVERSIONINFO);
GetVersionEx(&int_os_version);
check_supported_os_version();
+
#ifdef USE_THREADS
- {
- erts_thr_init_data_t eid = ERTS_THR_INIT_DATA_DEF_INITER;
+ eid.thread_create_child_func = thr_create_prepare_child;
+ /* Before creation in parent */
+ eid.thread_create_prepare_func = thr_create_prepare;
+ /* After creation in parent */
+ eid.thread_create_parent_func = thr_create_cleanup;
- eid.thread_create_child_func = thr_create_prepare_child;
- /* Before creation in parent */
- eid.thread_create_prepare_func = thr_create_prepare;
- /* After creation in parent */
- eid.thread_create_parent_func = thr_create_cleanup,
+ erts_thr_init(&eid);
+#endif
+
+ erts_init_sys_time_sup();
- erts_thr_init(&eid);
+#ifdef USE_THREADS
#ifdef ERTS_ENABLE_LOCK_COUNT
- erts_lcnt_init();
+ erts_lcnt_init();
#endif
- }
#endif
+
erts_smp_atomic_init_nob(&sys_misc_mem_sz, 0);
}
@@ -3258,9 +3279,9 @@ erts_sys_schedule_interrupt(int set)
#ifdef ERTS_SMP
void
-erts_sys_schedule_interrupt_timed(int set, erts_short_time_t msec)
+erts_sys_schedule_interrupt_timed(int set, ErtsMonotonicTime timeout_time)
{
- erts_check_io_interrupt_timed(set, msec);
+ erts_check_io_interrupt_timed(set, timeout_time);
}
#endif
diff --git a/erts/emulator/sys/win32/sys_time.c b/erts/emulator/sys/win32/sys_time.c
index b84c8f85ce..b292d9279e 100644
--- a/erts/emulator/sys/win32/sys_time.c
+++ b/erts/emulator/sys/win32/sys_time.c
@@ -25,6 +25,8 @@
#endif
#include "sys.h"
#include "assert.h"
+#include "erl_os_monotonic_time_extender.h"
+#include "erl_time.h"
#define LL_LITERAL(X) ERTS_I64_LITERAL(X)
@@ -61,11 +63,6 @@
(epoch) = ((ull.QuadPart / TICKS_PER_SECOND) - EPOCH_JULIAN_DIFF); \
} while(0)
-static SysHrTime wrap = 0;
-static DWORD last_tick_count = 0;
-static erts_smp_mtx_t wrap_lock;
-static ULONGLONG (WINAPI *pGetTickCount64)(void) = NULL;
-
/* Getting timezone information is a heavy operation, so we want to do this
only once */
@@ -76,27 +73,343 @@ static int days_in_month[2][13] = {
{0,31,28,31,30,31,30,31,31,30,31,30,31},
{0,31,29,31,30,31,30,31,31,30,31,30,31}};
-int
-sys_init_time(void)
+#define ERTS_GET_TICK_COUNT_TIME_UNIT_SHIFT 10
+
+/*
+ * erts_os_monotonic_time()
+ */
+
+struct sys_time_internal_state_read_only__ {
+ ULONGLONG (WINAPI *pGetTickCount64)(void);
+ BOOL (WINAPI *pQueryPerformanceCounter)(LARGE_INTEGER *);
+ Sint32 pcf;
+ int using_get_tick_count_time_unit;
+};
+
+struct sys_time_internal_state_read_mostly__ {
+ ErtsOsMonotonicTimeExtendState os_mtime_xtnd;
+};
+
+struct sys_time_internal_state_write_freq__ {
+ erts_smp_mtx_t mtime_mtx;
+ ULONGLONG wrap;
+ ULONGLONG last_tick_count;
+};
+
+__declspec(align(ASSUMED_CACHE_LINE_SIZE)) struct {
+ union {
+ struct sys_time_internal_state_read_only__ o;
+ char align__[(((sizeof(struct sys_time_internal_state_read_only__) - 1)
+ / ASSUMED_CACHE_LINE_SIZE) + 1)
+ * ASSUMED_CACHE_LINE_SIZE];
+ } r;
+ union {
+ struct sys_time_internal_state_read_mostly__ m;
+ char align__[(((sizeof(struct sys_time_internal_state_read_mostly__) - 1)
+ / ASSUMED_CACHE_LINE_SIZE) + 1)
+ * ASSUMED_CACHE_LINE_SIZE];
+ } wr;
+ union {
+ struct sys_time_internal_state_write_freq__ f;
+ char align__[(((sizeof(struct sys_time_internal_state_write_freq__) - 1)
+ / ASSUMED_CACHE_LINE_SIZE) + 1)
+ * ASSUMED_CACHE_LINE_SIZE];
+ } w;
+} internal_state;
+
+__declspec(align(ASSUMED_CACHE_LINE_SIZE)) ErtsSysTimeData__ erts_sys_time_data__;
+
+
+static ERTS_INLINE ErtsSystemTime
+SystemTime2MilliSec(SYSTEMTIME *stp)
+{
+ ErtsSystemTime stime;
+ FILETIME ft;
+ ULARGE_INTEGER ull;
+
+ SystemTimeToFileTime(stp, &ft);
+ FILETIME_TO_ULI(ull,ft);
+ /* now in 100 ns units */
+ stime = (ErtsSystemTime) ull.QuadPart;
+ stime -= (((ErtsSystemTime) EPOCH_JULIAN_DIFF)
+ * ((ErtsSystemTime) (10*1000*1000)));
+ stime /= (ErtsSystemTime) (10*1000); /* ms */
+ return stime;
+}
+
+static ErtsMonotonicTime
+os_monotonic_time_qpc(void)
+{
+ LARGE_INTEGER pc;
+
+ if (!(*internal_state.r.o.pQueryPerformanceCounter)(&pc))
+ erl_exit(ERTS_ABORT_EXIT, "QueryPerformanceCounter() failed\n");
+
+ return (ErtsMonotonicTime) pc.QuadPart;
+}
+
+static void
+os_times_qpc(ErtsMonotonicTime *mtimep, ErtsSystemTime *stimep)
+{
+ LARGE_INTEGER pc;
+ SYSTEMTIME st;
+ ErtsSystemTime stime;
+ BOOL qpcr;
+
+ qpcr = (*internal_state.r.o.pQueryPerformanceCounter)(&pc);
+ GetSystemTime(&st);
+
+ if (!qpcr)
+ erl_exit(ERTS_ABORT_EXIT, "QueryPerformanceCounter() failed\n");
+
+ *mtimep = (ErtsMonotonicTime) pc.QuadPart;
+
+ stime = SystemTime2MilliSec(&st);
+
+ *stimep = ((ErtsSystemTime)
+ erts_time_unit_conversion((Uint64) stime,
+ (Uint32) 1000,
+ internal_state.r.o.pcf));
+}
+
+static Uint32
+get_tick_count(void)
+{
+ return (Uint32) GetTickCount();
+}
+
+static ErtsMonotonicTime
+os_monotonic_time_gtc32(void)
+{
+ ErtsMonotonicTime mtime;
+ Uint32 ticks = (Uint32) GetTickCount();
+ ERTS_CHK_EXTEND_OS_MONOTONIC_TIME(&internal_state.wr.m.os_mtime_xtnd,
+ ticks);
+ mtime = ERTS_EXTEND_OS_MONOTONIC_TIME(&internal_state.wr.m.os_mtime_xtnd,
+ ticks);
+ mtime <<= ERTS_GET_TICK_COUNT_TIME_UNIT_SHIFT;
+ return mtime;
+}
+
+static void
+os_times_gtc32(ErtsMonotonicTime *mtimep, ErtsSystemTime *stimep)
+{
+ SYSTEMTIME st;
+ ErtsSystemTime stime, mtime;
+ Uint32 ticks;
+
+ ticks = (Uint32) GetTickCount();
+ GetSystemTime(&st);
+
+ ERTS_CHK_EXTEND_OS_MONOTONIC_TIME(&internal_state.wr.m.os_mtime_xtnd,
+ ticks);
+ mtime = ERTS_EXTEND_OS_MONOTONIC_TIME(&internal_state.wr.m.os_mtime_xtnd,
+ ticks);
+ mtime <<= ERTS_GET_TICK_COUNT_TIME_UNIT_SHIFT;
+ *mtimep = mtime;
+
+ stime = SystemTime2MilliSec(&st);
+ stime <<= ERTS_GET_TICK_COUNT_TIME_UNIT_SHIFT;
+ *stimep = stime;
+
+}
+
+static ErtsMonotonicTime
+os_monotonic_time_gtc64(void)
+{
+ ULONGLONG ticks = (*internal_state.r.o.pGetTickCount64)();
+ ErtsMonotonicTime mtime = (ErtsMonotonicTime) ticks;
+ return mtime << ERTS_GET_TICK_COUNT_TIME_UNIT_SHIFT;
+}
+
+static void
+os_times_gtc64(ErtsMonotonicTime *mtimep, ErtsSystemTime *stimep)
+{
+ SYSTEMTIME st;
+ ErtsSystemTime stime, mtime;
+ ULONGLONG ticks;
+
+ ticks = (*internal_state.r.o.pGetTickCount64)();
+ GetSystemTime(&st);
+
+ mtime = (ErtsMonotonicTime) ticks;
+ mtime <<= ERTS_GET_TICK_COUNT_TIME_UNIT_SHIFT;
+ *mtimep = mtime;
+
+ stime = SystemTime2MilliSec(&st);
+ stime <<= ERTS_GET_TICK_COUNT_TIME_UNIT_SHIFT;
+ *stimep = stime;
+}
+
+static ErtsSysHrTime
+sys_hrtime_qpc(void)
+{
+ LARGE_INTEGER pc;
+
+ if (!(*internal_state.r.o.pQueryPerformanceCounter)(&pc))
+ erl_exit(ERTS_ABORT_EXIT, "QueryPerformanceCounter() failed\n");
+
+ ASSERT(pc.QuadPart > 0);
+
+ return (ErtsSysHrTime) erts_time_unit_conversion((Uint64) pc.QuadPart,
+ internal_state.r.o.pcf,
+ (Uint32) 1000*1000*1000);
+}
+
+static ErtsSysHrTime
+sys_hrtime_gtc32(void)
+{
+ ErtsSysHrTime time;
+ Uint32 ticks = (Uint32) GetTickCount();
+ ERTS_CHK_EXTEND_OS_MONOTONIC_TIME(&internal_state.wr.m.os_mtime_xtnd,
+ tick_count);
+ time = (ErtsSysHrTime) ERTS_EXTEND_OS_MONOTONIC_TIME(&internal_state.wr.m.os_mtime_xtnd,
+ ticks);
+ time *= (ErtsSysHrTime) (1000 * 1000);
+ return time;
+}
+
+static ErtsSysHrTime
+sys_hrtime_gtc64(void)
+{
+ ErtsSysHrTime time = (*internal_state.r.o.pGetTickCount64)();
+ time *= (ErtsSysHrTime) (1000*1000);
+ return time;
+}
+
+/*
+ * Init
+ */
+
+void
+sys_init_time(ErtsSysInitTimeResult *init_resp)
{
+ ErtsMonotonicTime (*os_mtime_func)(void);
+ void (*os_times_func)(ErtsMonotonicTime *, ErtsSystemTime *);
+ ErtsSysHrTime (*sys_hrtime_func)(void) = NULL;
+ ErtsMonotonicTime time_unit;
char kernel_dll_name[] = "kernel32";
HMODULE module;
+ init_resp->os_monotonic_time_info.clock_id = NULL;
+
module = GetModuleHandle(kernel_dll_name);
- pGetTickCount64 = (module != NULL) ?
- (ULONGLONG (WINAPI *)(void))
- GetProcAddress(module,"GetTickCount64") :
- NULL;
+ if (!module) {
+ get_tick_count:
+ erts_smp_mtx_init(&internal_state.w.f.mtime_mtx,
+ "os_monotonic_time");
+ internal_state.w.f.wrap = 0;
+ internal_state.w.f.last_tick_count = 0;
+
+ init_resp->os_monotonic_time_info.func = "GetTickCount";
+ init_resp->os_monotonic_time_info.locked_use = 0;
+ /* 10-16 ms resolution according to MicroSoft documentation */
+ init_resp->os_monotonic_time_info.resolution = 100; /* 10 ms */
+ time_unit = (ErtsMonotonicTime) 1000;
+ time_unit <<= ERTS_GET_TICK_COUNT_TIME_UNIT_SHIFT;
+ internal_state.r.o.using_get_tick_count_time_unit = 1;
+ os_mtime_func = os_monotonic_time_gtc32;
+ os_times_func = os_times_gtc32;
+ init_resp->os_monotonic_time_info.extended = 1;
+ erts_init_os_monotonic_time_extender(&internal_state.wr.m.os_mtime_xtnd,
+ get_tick_count,
+ 60*60*24*7); /* Check once a week */
+ if (!sys_hrtime_func)
+ sys_hrtime_func = sys_hrtime_gtc32;
+ }
+ else {
+ int major, minor, build;
+
+ os_version(&major, &minor, &build);
+
+ if (major < 6) {
+
+ get_tick_count64:
+
+ internal_state.r.o.pGetTickCount64
+ = ((ULONGLONG (WINAPI *)(void))
+ GetProcAddress(module, "GetTickCount64"));
+ if (!internal_state.r.o.pGetTickCount64)
+ goto get_tick_count;
+
+ init_resp->os_monotonic_time_info.func = "GetTickCount64";
+ init_resp->os_monotonic_time_info.locked_use = 0;
+ /* 10-16 ms resolution according to MicroSoft documentation */
+ init_resp->os_monotonic_time_info.resolution = 100; /* 10 ms */
+ time_unit = (ErtsMonotonicTime) 1000;
+ time_unit <<= ERTS_GET_TICK_COUNT_TIME_UNIT_SHIFT;
+ internal_state.r.o.using_get_tick_count_time_unit = 1;
+ os_mtime_func = os_monotonic_time_gtc64;
+ os_times_func = os_times_gtc64;
+ if (!sys_hrtime_func)
+ sys_hrtime_func = sys_hrtime_gtc64;
+ }
+ else { /* Vista or newer... */
+
+ LARGE_INTEGER pf;
+ BOOL (WINAPI *QPF)(LARGE_INTEGER *);
+
+ QPF = ((BOOL (WINAPI *)(LARGE_INTEGER *))
+ GetProcAddress(module, "QueryPerformanceFrequency"));
+ if (!QPF)
+ goto get_tick_count64;
+ if (!(*QPF)(&pf))
+ goto get_tick_count64;
+
+ internal_state.r.o.pQueryPerformanceCounter
+ = ((BOOL (WINAPI *)(LARGE_INTEGER *))
+ GetProcAddress(module, "QueryPerformanceCounter"));
+ if (!internal_state.r.o.pQueryPerformanceCounter)
+ goto get_tick_count64;
+
+ if (pf.QuadPart < (((LONGLONG) 1) << 32)) {
+ internal_state.r.o.pcf = (Uint32) pf.QuadPart;
+ sys_hrtime_func = sys_hrtime_qpc;
+ }
+
+ /*
+ * We only use QueryPerformanceCounter() for
+ * os-monotonic-time if its frequency is equal
+ * to, or larger than GHz in order to ensure
+ * that the user wont be able to observe faulty
+ * order between values retrieved on different threads.
+ */
+ if (pf.QuadPart < (LONGLONG) 1000*1000*1000)
+ goto get_tick_count64;
+
+ init_resp->os_monotonic_time_info.func = "QueryPerformanceCounter";
+ init_resp->os_monotonic_time_info.locked_use = 0;
+ time_unit = (ErtsMonotonicTime) pf.QuadPart;
+ internal_state.r.o.using_get_tick_count_time_unit = 0;
+ init_resp->os_monotonic_time_info.resolution = time_unit;
+ os_mtime_func = os_monotonic_time_qpc;
+ os_times_func = os_times_qpc;
+ }
+ }
+
+ erts_sys_time_data__.r.o.os_monotonic_time = os_mtime_func;
+ erts_sys_time_data__.r.o.os_times = os_times_func;
+ init_resp->os_monotonic_time_unit = time_unit;
+ init_resp->have_os_monotonic_time = 1;
+ init_resp->sys_clock_resolution = 1;
+
+ init_resp->os_system_time_info.func = "GetSystemTime";
+ init_resp->os_system_time_info.clock_id = NULL;
+ init_resp->os_system_time_info.resolution = 100;
+ init_resp->os_system_time_info.locked_use = 0;
if(GetTimeZoneInformation(&static_tzi) &&
static_tzi.StandardDate.wMonth != 0 &&
static_tzi.DaylightDate.wMonth != 0) {
have_static_tzi = 1;
}
+}
- erts_smp_mtx_init(&wrap_lock, "sys_gethrtime");
-
- return 1;
+void
+erts_late_sys_init_time(void)
+{
+ if (erts_sys_time_data__.r.o.os_monotonic_time == os_monotonic_time_gtc32)
+ erts_late_init_os_monotonic_time_extender(&internal_state.wr.m.os_mtime_xtnd);
}
/* Returns a switchtimes for DST as UTC filetimes given data from a
@@ -377,41 +690,27 @@ sys_gettimeofday(SysTimeval *tv)
EPOCH_JULIAN_DIFF);
}
-extern int erts_initialized;
-SysHrTime
-sys_gethrtime(void)
+ErtsSystemTime
+erts_os_system_time(void)
{
- if (pGetTickCount64 != NULL) {
- return ((SysHrTime) pGetTickCount64()) * LL_LITERAL(1000000);
- } else {
- DWORD ticks;
- SysHrTime res;
- erts_smp_mtx_lock(&wrap_lock);
- ticks = (SysHrTime) (GetTickCount() & 0x7FFFFFFF);
- if (ticks < (SysHrTime) last_tick_count) {
- /* Detect a race that should no longer be here... */
- if ((((SysHrTime) last_tick_count) - ((SysHrTime) ticks)) > 1000) {
- wrap += LL_LITERAL(1) << 31;
- } else {
- /*
- * XXX Debug: Violates locking order, remove all this,
- * after testing!
- */
- erts_dsprintf_buf_t *dsbufp = erts_create_logger_dsbuf();
- erts_dsprintf(dsbufp, "Did not wrap when last_tick %d "
- "and tick %d",
- last_tick_count, ticks);
- erts_send_error_to_logger_nogl(dsbufp);
- ticks = last_tick_count;
- }
- }
- last_tick_count = ticks;
- res = ((((LONGLONG) ticks) + wrap) * LL_LITERAL(1000000));
- erts_smp_mtx_unlock(&wrap_lock);
- return res;
+ SYSTEMTIME st;
+ ErtsSystemTime stime;
+
+ GetSystemTime(&st);
+ stime = SystemTime2MilliSec(&st);
+
+ if (internal_state.r.o.using_get_tick_count_time_unit) {
+ stime <<= ERTS_GET_TICK_COUNT_TIME_UNIT_SHIFT;
+ return stime;
}
+
+ return ((ErtsSystemTime)
+ erts_time_unit_conversion((Uint64) stime,
+ (Uint32) 1000,
+ internal_state.r.o.pcf));
}
+
clock_t
sys_times(SysTimes *buffer) {
clock_t kernel_ticks = (GetTickCount() /
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-02 01:09:48 +0000