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-rw-r--r--erts/emulator/beam/erl_alloc.types1
-rwxr-xr-xerts/emulator/beam/erl_bif_info.c38
-rw-r--r--erts/emulator/beam/erl_init.c15
-rw-r--r--erts/emulator/beam/erl_port_task.c24
-rw-r--r--erts/emulator/beam/erl_port_task.h2
-rw-r--r--erts/emulator/beam/erl_process.c38
-rw-r--r--erts/emulator/beam/erl_process.h1
-rw-r--r--erts/emulator/beam/sys.h12
-rw-r--r--erts/emulator/beam/utils.c1
-rw-r--r--erts/emulator/sys/common/erl_check_io.c694
-rw-r--r--erts/emulator/sys/common/erl_check_io.h45
-rw-r--r--erts/emulator/sys/common/erl_sys_common_misc.c8
-rw-r--r--erts/emulator/sys/unix/erl_unix_sys.h3
-rw-r--r--erts/emulator/sys/unix/sys.c6
-rw-r--r--erts/emulator/sys/win32/erl_poll.c2
-rw-r--r--erts/emulator/sys/win32/erl_win_sys.h4
-rw-r--r--erts/emulator/test/a_SUITE.erl14
-rw-r--r--erts/emulator/test/driver_SUITE.erl62
-rw-r--r--erts/emulator/test/z_SUITE.erl28
19 files changed, 820 insertions, 178 deletions
diff --git a/erts/emulator/beam/erl_alloc.types b/erts/emulator/beam/erl_alloc.types
index bb5eba80be..0bbd3e2dd5 100644
--- a/erts/emulator/beam/erl_alloc.types
+++ b/erts/emulator/beam/erl_alloc.types
@@ -393,6 +393,7 @@ type DRV_EV_STATE LONG_LIVED SYSTEM driver_event_state
type DRV_EV_D_STATE FIXED_SIZE SYSTEM driver_event_data_state
type DRV_SEL_D_STATE FIXED_SIZE SYSTEM driver_select_data_state
type FD_LIST SHORT_LIVED SYSTEM fd_list
+type ACTIVE_FD_ARR SHORT_LIVED SYSTEM active_fd_array
type POLLSET LONG_LIVED SYSTEM pollset
type POLLSET_UPDREQ SHORT_LIVED SYSTEM pollset_update_req
type POLL_FDS LONG_LIVED SYSTEM poll_fds
diff --git a/erts/emulator/beam/erl_bif_info.c b/erts/emulator/beam/erl_bif_info.c
index d7f1e2d971..8f4095f236 100755
--- a/erts/emulator/beam/erl_bif_info.c
+++ b/erts/emulator/beam/erl_bif_info.c
@@ -2643,6 +2643,9 @@ BIF_RETTYPE system_info_1(BIF_ALIST_1)
else if (ERTS_IS_ATOM_STR("ets_limit",BIF_ARG_1)) {
BIF_RET(make_small(erts_db_get_max_tabs()));
}
+ else if (ERTS_IS_ATOM_STR("eager_check_io",BIF_ARG_1)) {
+ BIF_RET(erts_eager_check_io ? am_true : am_false);
+ }
BIF_ERROR(BIF_P, BADARG);
}
@@ -3232,17 +3235,38 @@ BIF_RETTYPE erts_debug_get_internal_state_1(BIF_ALIST_1)
BIF_RET(make_small((Uint) words));
}
else if (ERTS_IS_ATOM_STR("check_io_debug", BIF_ARG_1)) {
- /* Used by (emulator) */
- int res;
+ /* Used by driver_SUITE (emulator) */
+ Uint sz, *szp;
+ Eterm res, *hp, **hpp;
+ int no_errors;
+ ErtsCheckIoDebugInfo ciodi = {0};
#ifdef HAVE_ERTS_CHECK_IO_DEBUG
erts_smp_proc_unlock(BIF_P,ERTS_PROC_LOCK_MAIN);
- res = erts_check_io_debug();
+ no_errors = erts_check_io_debug(&ciodi);
erts_smp_proc_lock(BIF_P,ERTS_PROC_LOCK_MAIN);
#else
- res = 0;
-#endif
- ASSERT(res >= 0);
- BIF_RET(erts_make_integer((Uint) res, BIF_P));
+ no_errors = 0;
+#endif
+ sz = 0;
+ szp = &sz;
+ hpp = NULL;
+ while (1) {
+ res = erts_bld_tuple(hpp, szp, 4,
+ erts_bld_uint(hpp, szp,
+ (Uint) no_errors),
+ erts_bld_uint(hpp, szp,
+ (Uint) ciodi.no_used_fds),
+ erts_bld_uint(hpp, szp,
+ (Uint) ciodi.no_driver_select_structs),
+ erts_bld_uint(hpp, szp,
+ (Uint) ciodi.no_driver_event_structs));
+ if (hpp)
+ break;
+ hp = HAlloc(BIF_P, sz);
+ szp = NULL;
+ hpp = &hp;
+ }
+ BIF_RET(res);
}
else if (ERTS_IS_ATOM_STR("process_info_args", BIF_ARG_1)) {
/* Used by process_SUITE (emulator) */
diff --git a/erts/emulator/beam/erl_init.c b/erts/emulator/beam/erl_init.c
index 8c4fffa75b..c3be23c84a 100644
--- a/erts/emulator/beam/erl_init.c
+++ b/erts/emulator/beam/erl_init.c
@@ -537,6 +537,8 @@ void erts_usage(void)
erts_fprintf(stderr, " see the erl(1) documentation for more info.\n");
erts_fprintf(stderr, "-sct cput set cpu topology,\n");
erts_fprintf(stderr, " see the erl(1) documentation for more info.\n");
+ erts_fprintf(stderr, "-secio bool enable/disable eager check I/O scheduling,\n");
+ erts_fprintf(stderr, " see the erl(1) documentation for more info.\n");
erts_fprintf(stderr, "-sws val set scheduler wakeup strategy, valid values are:\n");
erts_fprintf(stderr, " default|legacy.\n");
erts_fprintf(stderr, "-swct val set scheduler wake cleanup threshold, valid values are:\n");
@@ -1487,6 +1489,19 @@ erl_start(int argc, char **argv)
erts_usage();
}
}
+ else if (has_prefix("ecio", sub_param)) {
+ arg = get_arg(sub_param+4, argv[i+1], &i);
+ if (sys_strcmp("true", arg) == 0)
+ erts_eager_check_io = 1;
+ else if (sys_strcmp("false", arg) == 0)
+ erts_eager_check_io = 0;
+ else {
+ erts_fprintf(stderr,
+ "bad schedule eager check I/O value '%s'\n",
+ arg);
+ erts_usage();
+ }
+ }
else if (has_prefix("pp", sub_param)) {
arg = get_arg(sub_param+2, argv[i+1], &i);
if (sys_strcmp(arg, "true") == 0)
diff --git a/erts/emulator/beam/erl_port_task.c b/erts/emulator/beam/erl_port_task.c
index 547a42beb2..ff4fdc70aa 100644
--- a/erts/emulator/beam/erl_port_task.c
+++ b/erts/emulator/beam/erl_port_task.c
@@ -32,6 +32,7 @@
#include "global.h"
#include "erl_port_task.h"
#include "dist.h"
+#include "erl_check_io.h"
#include "dtrace-wrapper.h"
#include <stdarg.h>
@@ -543,6 +544,16 @@ reset_handle(ErtsPortTask *ptp)
}
static ERTS_INLINE void
+reset_executed_io_task_handle(ErtsPortTask *ptp)
+{
+ if (ptp->u.alive.handle) {
+ ASSERT(ptp == handle2task(ptp->u.alive.handle));
+ erts_io_notify_port_task_executed(ptp->u.alive.handle);
+ reset_port_task_handle(ptp->u.alive.handle);
+ }
+}
+
+static ERTS_INLINE void
set_handle(ErtsPortTask *ptp, ErtsPortTaskHandle *pthp)
{
ptp->u.alive.handle = pthp;
@@ -1365,10 +1376,7 @@ erts_port_task_schedule(Eterm id,
ErtsPortTask *ptp = NULL;
erts_aint32_t act, add_flags;
- if (pthp && erts_port_task_is_scheduled(pthp)) {
- ASSERT(0);
- erts_port_task_abort(pthp);
- }
+ ERTS_LC_ASSERT(!pthp || !erts_port_task_is_scheduled(pthp));
ASSERT(is_internal_port(id));
@@ -1654,8 +1662,6 @@ erts_port_task_execute(ErtsRunQueue *runq, Port **curr_port_pp)
goto aborted_port_task;
}
- reset_handle(ptp);
-
if (erts_system_monitor_long_schedule != 0) {
start_time = erts_timestamp_millis();
}
@@ -1666,6 +1672,7 @@ erts_port_task_execute(ErtsRunQueue *runq, Port **curr_port_pp)
switch (ptp->type) {
case ERTS_PORT_TASK_TIMEOUT:
+ reset_handle(ptp);
reds = ERTS_PORT_REDS_TIMEOUT;
if (!(state & ERTS_PORT_SFLGS_DEAD)) {
DTRACE_DRIVER(driver_timeout, pp);
@@ -1679,6 +1686,7 @@ erts_port_task_execute(ErtsRunQueue *runq, Port **curr_port_pp)
/* NOTE some windows drivers use ->ready_input for input and output */
(*pp->drv_ptr->ready_input)((ErlDrvData) pp->drv_data,
ptp->u.alive.td.io.event);
+ reset_executed_io_task_handle(ptp);
io_tasks_executed++;
break;
case ERTS_PORT_TASK_OUTPUT:
@@ -1687,6 +1695,7 @@ erts_port_task_execute(ErtsRunQueue *runq, Port **curr_port_pp)
DTRACE_DRIVER(driver_ready_output, pp);
(*pp->drv_ptr->ready_output)((ErlDrvData) pp->drv_data,
ptp->u.alive.td.io.event);
+ reset_executed_io_task_handle(ptp);
io_tasks_executed++;
break;
case ERTS_PORT_TASK_EVENT:
@@ -1696,10 +1705,12 @@ erts_port_task_execute(ErtsRunQueue *runq, Port **curr_port_pp)
(*pp->drv_ptr->event)((ErlDrvData) pp->drv_data,
ptp->u.alive.td.io.event,
ptp->u.alive.td.io.event_data);
+ reset_executed_io_task_handle(ptp);
io_tasks_executed++;
break;
case ERTS_PORT_TASK_PROC_SIG: {
ErtsProc2PortSigData *sigdp = &ptp->u.alive.td.psig.data;
+ reset_handle(ptp);
ASSERT((state & ERTS_PORT_SFLGS_DEAD) == 0);
if (!pp->sched.taskq.bpq)
reds = ptp->u.alive.td.psig.callback(pp,
@@ -1717,6 +1728,7 @@ erts_port_task_execute(ErtsRunQueue *runq, Port **curr_port_pp)
break;
}
case ERTS_PORT_TASK_DIST_CMD:
+ reset_handle(ptp);
reds = erts_dist_command(pp, CONTEXT_REDS - pp->reds);
break;
default:
diff --git a/erts/emulator/beam/erl_port_task.h b/erts/emulator/beam/erl_port_task.h
index 123253a057..e1e06b565e 100644
--- a/erts/emulator/beam/erl_port_task.h
+++ b/erts/emulator/beam/erl_port_task.h
@@ -154,7 +154,7 @@ erts_port_task_handle_init(ErtsPortTaskHandle *pthp)
ERTS_GLB_INLINE int
erts_port_task_is_scheduled(ErtsPortTaskHandle *pthp)
{
- return ((void *) erts_smp_atomic_read_nob(pthp)) != NULL;
+ return ((void *) erts_smp_atomic_read_acqb(pthp)) != NULL;
}
ERTS_GLB_INLINE void erts_port_task_pre_init_sched(ErtsPortTaskSched *ptsp,
diff --git a/erts/emulator/beam/erl_process.c b/erts/emulator/beam/erl_process.c
index 1efd070afd..4f3ea92cf5 100644
--- a/erts/emulator/beam/erl_process.c
+++ b/erts/emulator/beam/erl_process.c
@@ -143,6 +143,7 @@ extern BeamInstr beam_apply[];
extern BeamInstr beam_exit[];
extern BeamInstr beam_continue_exit[];
+int erts_eager_check_io = 0;
int erts_sched_compact_load;
Uint erts_no_schedulers;
@@ -1977,19 +1978,28 @@ try_set_sys_scheduling(void)
#endif
static ERTS_INLINE int
-prepare_for_sys_schedule(void)
+prepare_for_sys_schedule(int non_blocking)
{
+ if (non_blocking && erts_eager_check_io) {
#ifdef ERTS_SMP
- while (!erts_port_task_have_outstanding_io_tasks()
- && try_set_sys_scheduling()) {
- if (!erts_port_task_have_outstanding_io_tasks())
- return 1;
- clear_sys_scheduling();
+ return try_set_sys_scheduling();
+#else
+ return 1;
+#endif
}
- return 0;
+ else {
+#ifdef ERTS_SMP
+ while (!erts_port_task_have_outstanding_io_tasks()
+ && try_set_sys_scheduling()) {
+ if (!erts_port_task_have_outstanding_io_tasks())
+ return 1;
+ clear_sys_scheduling();
+ }
+ return 0;
#else
- return !erts_port_task_have_outstanding_io_tasks();
+ return !erts_port_task_have_outstanding_io_tasks();
#endif
+ }
}
#ifdef ERTS_SMP
@@ -2307,7 +2317,7 @@ scheduler_wait(int *fcalls, ErtsSchedulerData *esdp, ErtsRunQueue *rq)
* be waiting in erl_sys_schedule()
*/
- if (!prepare_for_sys_schedule()) {
+ if (!prepare_for_sys_schedule(0)) {
sched_waiting(esdp->no, rq);
@@ -2459,7 +2469,7 @@ scheduler_wait(int *fcalls, ErtsSchedulerData *esdp, ErtsRunQueue *rq)
* Got to check that we still got I/O tasks; otherwise
* we have to continue checking for I/O...
*/
- if (!prepare_for_sys_schedule()) {
+ if (!prepare_for_sys_schedule(0)) {
spincount *= ERTS_SCHED_TSE_SLEEP_SPINCOUNT_FACT;
goto tse_wait;
}
@@ -2481,7 +2491,7 @@ scheduler_wait(int *fcalls, ErtsSchedulerData *esdp, ErtsRunQueue *rq)
* Got to check that we still got I/O tasks; otherwise
* we have to wait in erl_sys_schedule() after all...
*/
- if (!prepare_for_sys_schedule()) {
+ if (!prepare_for_sys_schedule(0)) {
/*
* Not allowed to wait in erl_sys_schedule;
* do tse wait instead...
@@ -7022,7 +7032,7 @@ Process *schedule(Process *p, int calls)
goto check_activities_to_run;
}
- else if (fcalls > input_reductions && prepare_for_sys_schedule()) {
+ else if (fcalls > input_reductions && prepare_for_sys_schedule(!0)) {
/*
* Schedule system-level activities.
*/
@@ -7030,8 +7040,6 @@ Process *schedule(Process *p, int calls)
erts_smp_atomic32_set_relb(&function_calls, 0);
fcalls = 0;
- ASSERT(!erts_port_task_have_outstanding_io_tasks());
-
#if 0 /* Not needed since we wont wait in sys schedule */
erts_sys_schedule_interrupt(0);
#endif
@@ -7063,7 +7071,7 @@ Process *schedule(Process *p, int calls)
if (RUNQ_READ_LEN(&rq->ports.info.len)) {
int have_outstanding_io;
have_outstanding_io = erts_port_task_execute(rq, &esdp->current_port);
- if ((have_outstanding_io && fcalls > 2*input_reductions)
+ if ((!erts_eager_check_io && have_outstanding_io && fcalls > 2*input_reductions)
|| rq->halt_in_progress) {
/*
* If we have performed more than 2*INPUT_REDUCTIONS since
diff --git a/erts/emulator/beam/erl_process.h b/erts/emulator/beam/erl_process.h
index 8d136f6e8b..41936c1bb0 100644
--- a/erts/emulator/beam/erl_process.h
+++ b/erts/emulator/beam/erl_process.h
@@ -97,6 +97,7 @@ struct saved_calls {
};
extern Export exp_send, exp_receive, exp_timeout;
+extern int erts_eager_check_io;
extern int erts_sched_compact_load;
extern Uint erts_no_schedulers;
extern Uint erts_no_run_queues;
diff --git a/erts/emulator/beam/sys.h b/erts/emulator/beam/sys.h
index 31252ed78f..e691d5c55c 100644
--- a/erts/emulator/beam/sys.h
+++ b/erts/emulator/beam/sys.h
@@ -64,8 +64,12 @@
*/
#ifndef ERTS_SYS_FD_TYPE
+#define ERTS_SYS_FD_INVALID ((ErtsSysFdType) -1)
typedef int ErtsSysFdType;
#else
+#ifndef ERTS_SYS_FD_INVALID
+# error missing ERTS_SYS_FD_INVALID
+#endif
typedef ERTS_SYS_FD_TYPE ErtsSysFdType;
#endif
@@ -731,6 +735,14 @@ void init_getenv_state(GETENV_STATE *);
char * getenv_string(GETENV_STATE *);
void fini_getenv_state(GETENV_STATE *);
+#define HAVE_ERTS_CHECK_IO_DEBUG
+typedef struct {
+ int no_used_fds;
+ int no_driver_select_structs;
+ int no_driver_event_structs;
+} ErtsCheckIoDebugInfo;
+int erts_check_io_debug(ErtsCheckIoDebugInfo *ip);
+
/* xxxP */
#define SYS_DEFAULT_FLOAT_DECIMALS 20
void init_sys_float(void);
diff --git a/erts/emulator/beam/utils.c b/erts/emulator/beam/utils.c
index 0d75bbcc77..426e43d5d8 100644
--- a/erts/emulator/beam/utils.c
+++ b/erts/emulator/beam/utils.c
@@ -47,6 +47,7 @@
#include "erl_sched_spec_pre_alloc.h"
#include "beam_bp.h"
#include "erl_ptab.h"
+#include "erl_check_io.h"
#undef M_TRIM_THRESHOLD
#undef M_TOP_PAD
diff --git a/erts/emulator/sys/common/erl_check_io.c b/erts/emulator/sys/common/erl_check_io.c
index 7035dc77df..e62f34b679 100644
--- a/erts/emulator/sys/common/erl_check_io.c
+++ b/erts/emulator/sys/common/erl_check_io.c
@@ -51,8 +51,17 @@ typedef char EventStateType;
#define ERTS_EV_TYPE_STOP_USE ((EventStateType) 3) /* pending stop_select */
typedef char EventStateFlags;
-#define ERTS_EV_FLAG_USED ((EventStateFlags) 1) /* ERL_DRV_USE has been turned on */
+#define ERTS_EV_FLAG_USED ((EventStateFlags) 1) /* ERL_DRV_USE has been turned on */
+#define ERTS_EV_FLAG_DEFER_IN_EV ((EventStateFlags) 2)
+#define ERTS_EV_FLAG_DEFER_OUT_EV ((EventStateFlags) 4)
+#ifdef DEBUG
+# define ERTS_ACTIVE_FD_INC 2
+#else
+# define ERTS_ACTIVE_FD_INC 128
+#endif
+
+#define ERTS_CHECK_IO_POLL_RES_LEN 512
#if defined(ERTS_KERNEL_POLL_VERSION)
# define ERTS_CIO_EXPORT(FUNC) FUNC ## _kp
@@ -66,6 +75,7 @@ typedef char EventStateFlags;
(ERTS_POLL_USE_POLL && !ERTS_POLL_USE_KERNEL_POLL)
#define ERTS_CIO_POLL_CTL ERTS_POLL_EXPORT(erts_poll_control)
+#define ERTS_CIO_POLL_CTLV ERTS_POLL_EXPORT(erts_poll_controlv)
#define ERTS_CIO_POLL_WAIT ERTS_POLL_EXPORT(erts_poll_wait)
#ifdef ERTS_POLL_NEED_ASYNC_INTERRUPT_SUPPORT
#define ERTS_CIO_POLL_AS_INTR ERTS_POLL_EXPORT(erts_poll_async_sig_interrupt)
@@ -82,6 +92,13 @@ static struct pollset_info
{
ErtsPollSet ps;
erts_smp_atomic_t in_poll_wait; /* set while doing poll */
+ struct {
+ int six; /* start index */
+ int eix; /* end index */
+ erts_smp_atomic32_t no;
+ int size;
+ ErtsSysFdType *array;
+ } active_fd;
#ifdef ERTS_SMP
struct removed_fd* removed_list; /* list of deselected fd's*/
erts_smp_spinlock_t removed_list_lock;
@@ -94,9 +111,11 @@ typedef struct {
SafeHashBucket hb;
#endif
ErtsSysFdType fd;
- union {
- ErtsDrvEventDataState *event; /* ERTS_EV_TYPE_DRV_EV */
+ struct {
ErtsDrvSelectDataState *select; /* ERTS_EV_TYPE_DRV_SEL */
+#if ERTS_CIO_HAVE_DRV_EVENT
+ ErtsDrvEventDataState *event; /* ERTS_EV_TYPE_DRV_EV */
+#endif
erts_driver_t* drv_ptr; /* ERTS_EV_TYPE_STOP_USE */
} driver;
ErtsPollEvents events;
@@ -166,6 +185,10 @@ static ERTS_INLINE ErtsDrvEventState* hash_new_drv_ev_state(ErtsSysFdType fd)
ErtsDrvEventState tmpl;
tmpl.fd = fd;
tmpl.driver.select = NULL;
+#if ERTS_CIO_HAVE_DRV_EVENT
+ tmpl.driver.event = NULL;
+#endif
+ tmpl.driver.drv_ptr = NULL;
tmpl.events = 0;
tmpl.remove_cnt = 0;
tmpl.type = ERTS_EV_TYPE_NONE;
@@ -206,6 +229,65 @@ ERTS_SCHED_PREF_QUICK_ALLOC_IMPL(removed_fd, struct removed_fd, 64, ERTS_ALC_T_F
#endif
static ERTS_INLINE void
+init_iotask(ErtsIoTask *io_task)
+{
+ erts_port_task_handle_init(&io_task->task);
+ erts_smp_atomic_init_nob(&io_task->executed_time, ~((erts_aint_t) 0));
+}
+
+static ERTS_INLINE int
+is_iotask_active(ErtsIoTask *io_task, erts_aint_t current_cio_time)
+{
+ if (erts_port_task_is_scheduled(&io_task->task))
+ return 1;
+ if (erts_smp_atomic_read_nob(&io_task->executed_time) == current_cio_time)
+ return 1;
+ return 0;
+}
+
+static ERTS_INLINE ErtsDrvSelectDataState *
+alloc_drv_select_data(void)
+{
+ ErtsDrvSelectDataState *dsp = erts_alloc(ERTS_ALC_T_DRV_SEL_D_STATE,
+ sizeof(ErtsDrvSelectDataState));
+ dsp->inport = NIL;
+ dsp->outport = NIL;
+ init_iotask(&dsp->iniotask);
+ init_iotask(&dsp->outiotask);
+ return dsp;
+}
+
+static ERTS_INLINE void
+free_drv_select_data(ErtsDrvSelectDataState *dsp)
+{
+ ASSERT(!erts_port_task_is_scheduled(&dsp->iniotask.task));
+ ASSERT(!erts_port_task_is_scheduled(&dsp->outiotask.task));
+ erts_free(ERTS_ALC_T_DRV_SEL_D_STATE, dsp);
+}
+
+static ERTS_INLINE ErtsDrvEventDataState *
+alloc_drv_event_data(void)
+{
+ ErtsDrvEventDataState *dep = erts_alloc(ERTS_ALC_T_DRV_EV_D_STATE,
+ sizeof(ErtsDrvEventDataState));
+ dep->port = NIL;
+ dep->data = NULL;
+ dep->removed_events = 0;
+#if ERTS_CIO_DEFER_ACTIVE_EVENTS
+ dep->deferred_events = 0;
+#endif
+ init_iotask(&dep->iotask);
+ return dep;
+}
+
+static ERTS_INLINE void
+free_drv_event_data(ErtsDrvEventDataState *dep)
+{
+ ASSERT(!erts_port_task_is_scheduled(&dep->iotask.task));
+ erts_free(ERTS_ALC_T_DRV_EV_D_STATE, dep);
+}
+
+static ERTS_INLINE void
remember_removed(ErtsDrvEventState *state, struct pollset_info* psi)
{
#ifdef ERTS_SMP
@@ -285,7 +367,7 @@ forget_removed(struct pollset_info* psi)
drv_ptr = state->driver.drv_ptr;
ASSERT(drv_ptr);
state->type = ERTS_EV_TYPE_NONE;
- state->flags = 0;
+ state->flags &= ~ERTS_EV_FLAG_USED;
state->driver.drv_ptr = NULL;
/* Fall through */
case ERTS_EV_TYPE_NONE:
@@ -342,6 +424,10 @@ grow_drv_ev_state(int min_ix)
for (i = erts_smp_atomic_read_nob(&drv_ev_state_len); i < new_len; i++) {
drv_ev_state[i].fd = (ErtsSysFdType) i;
drv_ev_state[i].driver.select = NULL;
+#if ERTS_CIO_HAVE_DRV_EVENT
+ drv_ev_state[i].driver.event = NULL;
+#endif
+ drv_ev_state[i].driver.drv_ptr = NULL;
drv_ev_state[i].events = 0;
drv_ev_state[i].remove_cnt = 0;
drv_ev_state[i].type = ERTS_EV_TYPE_NONE;
@@ -362,11 +448,7 @@ grow_drv_ev_state(int min_ix)
static ERTS_INLINE void
abort_task(Eterm id, ErtsPortTaskHandle *pthp, EventStateType type)
{
- if (is_nil(id)) {
- ASSERT(type == ERTS_EV_TYPE_NONE
- || !erts_port_task_is_scheduled(pthp));
- }
- else if (erts_port_task_is_scheduled(pthp)) {
+ if (is_not_nil(id) && erts_port_task_is_scheduled(pthp)) {
erts_port_task_abort(pthp);
ASSERT(erts_is_port_alive(id));
}
@@ -381,7 +463,7 @@ abort_tasks(ErtsDrvEventState *state, int mode)
#if ERTS_CIO_HAVE_DRV_EVENT
case ERTS_EV_TYPE_DRV_EV:
abort_task(state->driver.event->port,
- &state->driver.event->task,
+ &state->driver.event->iotask.task,
ERTS_EV_TYPE_DRV_EV);
return;
#endif
@@ -395,14 +477,14 @@ abort_tasks(ErtsDrvEventState *state, int mode)
case ERL_DRV_WRITE:
ASSERT(state->type == ERTS_EV_TYPE_DRV_SEL);
abort_task(state->driver.select->outport,
- &state->driver.select->outtask,
+ &state->driver.select->outiotask.task,
state->type);
if (mode == ERL_DRV_WRITE)
break;
case ERL_DRV_READ:
ASSERT(state->type == ERTS_EV_TYPE_DRV_SEL);
abort_task(state->driver.select->inport,
- &state->driver.select->intask,
+ &state->driver.select->iniotask.task,
state->type);
break;
default:
@@ -440,16 +522,14 @@ deselect(ErtsDrvEventState *state, int mode)
if (!(state->events)) {
switch (state->type) {
case ERTS_EV_TYPE_DRV_SEL:
- ASSERT(!erts_port_task_is_scheduled(&state->driver.select->intask));
- ASSERT(!erts_port_task_is_scheduled(&state->driver.select->outtask));
- erts_free(ERTS_ALC_T_DRV_SEL_D_STATE,
- state->driver.select);
+ state->driver.select->inport = NIL;
+ state->driver.select->outport = NIL;
break;
#if ERTS_CIO_HAVE_DRV_EVENT
case ERTS_EV_TYPE_DRV_EV:
- ASSERT(!erts_port_task_is_scheduled(&state->driver.event->task));
- erts_free(ERTS_ALC_T_DRV_EV_D_STATE,
- state->driver.event);
+ state->driver.event->port = NIL;
+ state->driver.event->data = NULL;
+ state->driver.event->removed_events = (ErtsPollEvents) 0;
break;
#endif
case ERTS_EV_TYPE_NONE:
@@ -459,20 +539,297 @@ deselect(ErtsDrvEventState *state, int mode)
break;
}
- state->driver.select = NULL;
state->type = ERTS_EV_TYPE_NONE;
- state->flags = 0;
+ state->flags &= ~ERTS_EV_FLAG_USED;
remember_removed(state, &pollset);
}
}
-
#ifdef ERTS_SYS_CONTINOUS_FD_NUMBERS
# define IS_FD_UNKNOWN(state) ((state)->type == ERTS_EV_TYPE_NONE && (state)->remove_cnt == 0)
#else
# define IS_FD_UNKNOWN(state) ((state) == NULL)
#endif
+static ERTS_INLINE void
+check_fd_cleanup(ErtsDrvEventState *state,
+#if ERTS_CIO_HAVE_DRV_EVENT
+ ErtsDrvEventDataState **free_event,
+#endif
+ ErtsDrvSelectDataState **free_select)
+{
+ erts_aint_t current_cio_time;
+
+ ERTS_SMP_LC_ASSERT(erts_smp_lc_mtx_is_locked(fd_mtx(state->fd)));
+
+ current_cio_time = erts_smp_atomic_read_acqb(&erts_check_io_time);
+ *free_select = NULL;
+ if (state->driver.select
+ && (state->type != ERTS_EV_TYPE_DRV_SEL)
+ && !is_iotask_active(&state->driver.select->iniotask, current_cio_time)
+ && !is_iotask_active(&state->driver.select->outiotask, current_cio_time)) {
+
+ *free_select = state->driver.select;
+ state->driver.select = NULL;
+ }
+
+#if ERTS_CIO_HAVE_DRV_EVENT
+ *free_event = NULL;
+ if (state->driver.event
+ && (state->type != ERTS_EV_TYPE_DRV_EV)
+ && !is_iotask_active(&state->driver.event->iotask, current_cio_time)) {
+
+ *free_event = state->driver.event;
+ state->driver.event = NULL;
+ }
+#endif
+
+#ifndef ERTS_SYS_CONTINOUS_FD_NUMBERS
+ if (((state->type != ERTS_EV_TYPE_NONE)
+ | state->remove_cnt
+#if ERTS_CIO_HAVE_DRV_EVENT
+ | (state->driver.event != NULL)
+#endif
+ | (state->driver.select != NULL)) == 0) {
+
+ hash_erase_drv_ev_state(state);
+
+ }
+#endif
+}
+
+static ERTS_INLINE int
+check_cleanup_active_fd(ErtsSysFdType fd,
+#if ERTS_CIO_DEFER_ACTIVE_EVENTS
+ ErtsPollControlEntry *pce,
+ int *pce_ix,
+#endif
+ erts_aint_t current_cio_time)
+{
+ ErtsDrvEventState *state;
+ int active = 0;
+ erts_smp_mtx_t *mtx = fd_mtx(fd);
+ void *free_select = NULL;
+#if ERTS_CIO_HAVE_DRV_EVENT
+ void *free_event = NULL;
+#endif
+#if ERTS_CIO_DEFER_ACTIVE_EVENTS
+ ErtsPollEvents evon = 0, evoff = 0;
+#endif
+
+ erts_smp_mtx_lock(mtx);
+
+#ifdef ERTS_SYS_CONTINOUS_FD_NUMBERS
+ state = &drv_ev_state[(int) fd];
+#else
+ state = hash_get_drv_ev_state(fd); /* may be NULL! */
+ if (state)
+#endif
+ {
+ if (state->driver.select) {
+#if ERTS_CIO_DEFER_ACTIVE_EVENTS
+ if (is_iotask_active(&state->driver.select->iniotask, current_cio_time)) {
+ active = 1;
+ if ((state->events & ERTS_POLL_EV_IN)
+ && !(state->flags & ERTS_EV_FLAG_DEFER_IN_EV)) {
+ evoff |= ERTS_POLL_EV_IN;
+ state->flags |= ERTS_EV_FLAG_DEFER_IN_EV;
+ }
+ }
+ else if (state->flags & ERTS_EV_FLAG_DEFER_IN_EV) {
+ if (state->events & ERTS_POLL_EV_IN)
+ evon |= ERTS_POLL_EV_IN;
+ state->flags &= ~ERTS_EV_FLAG_DEFER_IN_EV;
+ }
+ if (is_iotask_active(&state->driver.select->outiotask, current_cio_time)) {
+ active = 1;
+ if ((state->events & ERTS_POLL_EV_OUT)
+ && !(state->flags & ERTS_EV_FLAG_DEFER_OUT_EV)) {
+ evoff |= ERTS_POLL_EV_OUT;
+ state->flags |= ERTS_EV_FLAG_DEFER_OUT_EV;
+ }
+ }
+ else if (state->flags & ERTS_EV_FLAG_DEFER_OUT_EV) {
+ if (state->events & ERTS_POLL_EV_OUT)
+ evon |= ERTS_POLL_EV_OUT;
+ state->flags &= ~ERTS_EV_FLAG_DEFER_OUT_EV;
+ }
+ if (active)
+ (void) 0;
+ else
+#else
+ if (is_iotask_active(&state->driver.select->iniotask, current_cio_time)
+ || is_iotask_active(&state->driver.select->outiotask, current_cio_time))
+ active = 1;
+ else
+#endif
+ if (state->type != ERTS_EV_TYPE_DRV_SEL) {
+ free_select = state->driver.select;
+ state->driver.select = NULL;
+ }
+ }
+
+#if ERTS_CIO_HAVE_DRV_EVENT
+ if (state->driver.event) {
+ if (is_iotask_active(&state->driver.event->iotask, current_cio_time)) {
+#if ERTS_CIO_DEFER_ACTIVE_EVENTS
+ ErtsPollEvents evs = state->events & ~state->driver.event->deferred_events;
+ if (evs) {
+ evoff |= evs;
+ state->driver.event->deferred_events |= evs;
+ }
+#endif
+ active = 1;
+ }
+ else if (state->type != ERTS_EV_TYPE_DRV_EV) {
+ free_event = state->driver.event;
+ state->driver.event = NULL;
+ }
+#if ERTS_CIO_DEFER_ACTIVE_EVENTS
+ else {
+ ErtsPollEvents evs = state->events & state->driver.event->deferred_events;
+ if (evs) {
+ evon |= evs;
+ state->driver.event->deferred_events = 0;
+ }
+ }
+#endif
+
+ }
+#endif
+
+#ifndef ERTS_SYS_CONTINOUS_FD_NUMBERS
+ if (((state->type != ERTS_EV_TYPE_NONE) | state->remove_cnt | active) == 0)
+ hash_erase_drv_ev_state(state);
+#endif
+
+ }
+
+ erts_smp_mtx_unlock(mtx);
+
+ if (free_select)
+ free_drv_select_data(free_select);
+#if ERTS_CIO_HAVE_DRV_EVENT
+ if (free_event)
+ free_drv_event_data(free_event);
+#endif
+
+#if ERTS_CIO_DEFER_ACTIVE_EVENTS
+ if (evoff) {
+ ErtsPollControlEntry *pcep = &pce[(*pce_ix)++];
+ pcep->fd = fd;
+ pcep->events = evoff;
+ pcep->on = 0;
+ }
+ if (evon) {
+ ErtsPollControlEntry *pcep = &pce[(*pce_ix)++];
+ pcep->fd = fd;
+ pcep->events = evon;
+ pcep->on = 1;
+ }
+#endif
+
+ return active;
+}
+
+static void
+check_cleanup_active_fds(erts_aint_t current_cio_time)
+{
+ int six = pollset.active_fd.six;
+ int eix = pollset.active_fd.eix;
+ erts_aint32_t no = erts_smp_atomic32_read_dirty(&pollset.active_fd.no);
+ int size = pollset.active_fd.size;
+ int ix = six;
+#if ERTS_CIO_DEFER_ACTIVE_EVENTS
+ /* every fd might add two entries */
+ Uint pce_sz = 2*sizeof(ErtsPollControlEntry)*no;
+ ErtsPollControlEntry *pctrl_entries = (pce_sz
+ ? erts_alloc(ERTS_ALC_T_TMP, pce_sz)
+ : NULL);
+ int pctrl_ix = 0;
+#endif
+
+ while (ix != eix) {
+ ErtsSysFdType fd = pollset.active_fd.array[ix];
+ int nix = ix + 1;
+ if (nix >= size)
+ nix = 0;
+ ASSERT(fd != ERTS_SYS_FD_INVALID);
+ if (!check_cleanup_active_fd(fd,
+#if ERTS_CIO_DEFER_ACTIVE_EVENTS
+ pctrl_entries,
+ &pctrl_ix,
+#endif
+ current_cio_time)) {
+ no--;
+ if (ix == six) {
+#ifdef DEBUG
+ pollset.active_fd.array[ix] = ERTS_SYS_FD_INVALID;
+#endif
+ six = nix;
+ }
+ else {
+ pollset.active_fd.array[ix] = pollset.active_fd.array[six];
+#ifdef DEBUG
+ pollset.active_fd.array[six] = ERTS_SYS_FD_INVALID;
+#endif
+ six++;
+ if (six >= size)
+ six = 0;
+ }
+ }
+ ix = nix;
+ }
+
+#if ERTS_CIO_DEFER_ACTIVE_EVENTS
+ ASSERT(pctrl_ix <= pce_sz/sizeof(ErtsPollControlEntry));
+ if (pctrl_ix)
+ ERTS_CIO_POLL_CTLV(pollset.ps, pctrl_entries, pctrl_ix);
+ if (pctrl_entries)
+ erts_free(ERTS_ALC_T_TMP, pctrl_entries);
+#endif
+
+ pollset.active_fd.six = six;
+ pollset.active_fd.eix = eix;
+ erts_smp_atomic32_set_relb(&pollset.active_fd.no, no);
+}
+
+static ERTS_INLINE void
+add_active_fd(ErtsSysFdType fd)
+{
+ int eix = pollset.active_fd.eix;
+ int size = pollset.active_fd.size;
+
+
+ pollset.active_fd.array[eix] = fd;
+
+ erts_smp_atomic32_set_relb(&pollset.active_fd.no,
+ (erts_smp_atomic32_read_dirty(&pollset.active_fd.no)
+ + 1));
+
+ eix++;
+ if (eix >= size)
+ eix = 0;
+ if (pollset.active_fd.six == eix) {
+ pollset.active_fd.six = 0;
+ eix = size;
+ size += ERTS_ACTIVE_FD_INC;
+ pollset.active_fd.array = erts_realloc(ERTS_ALC_T_ACTIVE_FD_ARR,
+ pollset.active_fd.array,
+ sizeof(ErtsSysFdType)*size);
+ pollset.active_fd.size = size;
+#ifdef DEBUG
+ {
+ int i;
+ for (i = eix + 1; i < size; i++)
+ pollset.active_fd.array[i] = ERTS_SYS_FD_INVALID;
+ }
+#endif
+
+ }
+
+ pollset.active_fd.eix = eix;
+}
int
ERTS_CIO_EXPORT(driver_select)(ErlDrvPort ix,
@@ -489,6 +846,10 @@ ERTS_CIO_EXPORT(driver_select)(ErlDrvPort ix,
ErtsDrvEventState *state;
int wake_poller;
int ret;
+#if ERTS_CIO_HAVE_DRV_EVENT
+ ErtsDrvEventDataState *free_event = NULL;
+#endif
+ ErtsDrvSelectDataState *free_select = NULL;
#ifdef USE_VM_PROBES
DTRACE_CHARBUF(name, 64);
#endif
@@ -589,9 +950,9 @@ ERTS_CIO_EXPORT(driver_select)(ErlDrvPort ix,
if (new_events & (ERTS_POLL_EV_ERR|ERTS_POLL_EV_NVAL)) {
if (state->type == ERTS_EV_TYPE_DRV_SEL && !state->events) {
state->type = ERTS_EV_TYPE_NONE;
- state->flags = 0;
- erts_free(ERTS_ALC_T_DRV_SEL_D_STATE, state->driver.select);
- state->driver.select = NULL;
+ state->flags &= ~ERTS_EV_FLAG_USED;
+ state->driver.select->inport = NIL;
+ state->driver.select->outport = NIL;
}
ret = -1;
goto done;
@@ -609,18 +970,10 @@ ERTS_CIO_EXPORT(driver_select)(ErlDrvPort ix,
state->events = new_events;
if (ctl_events) {
if (on) {
- if (state->type == ERTS_EV_TYPE_NONE) {
- ErtsDrvSelectDataState *dsdsp
- = erts_alloc(ERTS_ALC_T_DRV_SEL_D_STATE,
- sizeof(ErtsDrvSelectDataState));
- dsdsp->inport = NIL;
- dsdsp->outport = NIL;
- erts_port_task_handle_init(&dsdsp->intask);
- erts_port_task_handle_init(&dsdsp->outtask);
- ASSERT(state->driver.select == NULL);
- state->driver.select = dsdsp;
+ if (!state->driver.select)
+ state->driver.select = alloc_drv_select_data();
+ if (state->type == ERTS_EV_TYPE_NONE)
state->type = ERTS_EV_TYPE_DRV_SEL;
- }
ASSERT(state->type == ERTS_EV_TYPE_DRV_SEL);
if (ctl_events & ERTS_POLL_EV_IN)
state->driver.select->inport = id;
@@ -641,17 +994,12 @@ ERTS_CIO_EXPORT(driver_select)(ErlDrvPort ix,
state->driver.select->outport = NIL;
}
if (new_events == 0) {
- ASSERT(!erts_port_task_is_scheduled(&state->driver.select->intask));
- ASSERT(!erts_port_task_is_scheduled(&state->driver.select->outtask));
if (old_events != 0) {
remember_removed(state, &pollset);
}
if ((mode & ERL_DRV_USE) || !(state->flags & ERTS_EV_FLAG_USED)) {
state->type = ERTS_EV_TYPE_NONE;
- state->flags = 0;
- erts_free(ERTS_ALC_T_DRV_SEL_D_STATE,
- state->driver.select);
- state->driver.select = NULL;
+ state->flags &= ~ERTS_EV_FLAG_USED;
}
/*else keep it, as fd will probably be selected upon again */
}
@@ -682,13 +1030,15 @@ ERTS_CIO_EXPORT(driver_select)(ErlDrvPort ix,
ret = 0;
-done:;
-#ifndef ERTS_SYS_CONTINOUS_FD_NUMBERS
- if (state->type == ERTS_EV_TYPE_NONE && state->remove_cnt == 0) {
- hash_erase_drv_ev_state(state);
- }
+done:
+
+ check_fd_cleanup(state,
+#if ERTS_CIO_HAVE_DRV_EVENT
+ &free_event,
#endif
-done_unknown:
+ &free_select);
+
+done_unknown:
erts_smp_mtx_unlock(fd_mtx(fd));
if (stop_select_fn) {
int was_unmasked = erts_block_fpe();
@@ -696,6 +1046,12 @@ done_unknown:
(*stop_select_fn)(e, NULL);
erts_unblock_fpe(was_unmasked);
}
+ if (free_select)
+ free_drv_select_data(free_select);
+#if ERTS_CIO_HAVE_DRV_EVENT
+ if (free_event)
+ free_drv_event_data(free_event);
+#endif
return ret;
}
@@ -715,6 +1071,10 @@ ERTS_CIO_EXPORT(driver_event)(ErlDrvPort ix,
ErtsDrvEventState *state;
int do_wake = 0;
int ret;
+#if ERTS_CIO_HAVE_DRV_EVENT
+ ErtsDrvEventDataState *free_event;
+#endif
+ ErtsDrvSelectDataState *free_select;
Port *prt = erts_drvport2port(ix);
if (prt == ERTS_INVALID_ERL_DRV_PORT)
@@ -795,10 +1155,8 @@ ERTS_CIO_EXPORT(driver_event)(ErlDrvPort ix,
state->driver.event->removed_events |= remove_events;
}
else {
- state->driver.event
- = erts_alloc(ERTS_ALC_T_DRV_EV_D_STATE,
- sizeof(ErtsDrvEventDataState));
- erts_port_task_handle_init(&state->driver.event->task);
+ if (!state->driver.event)
+ state->driver.event = alloc_drv_event_data();
state->driver.event->port = id;
state->driver.event->removed_events = (ErtsPollEvents) 0;
state->type = ERTS_EV_TYPE_DRV_EV;
@@ -808,10 +1166,10 @@ ERTS_CIO_EXPORT(driver_event)(ErlDrvPort ix,
else {
if (state->type == ERTS_EV_TYPE_DRV_EV) {
abort_tasks(state, 0);
- erts_free(ERTS_ALC_T_DRV_EV_D_STATE,
- state->driver.event);
+ state->driver.event->port = NIL;
+ state->driver.event->data = NULL;
+ state->driver.event->removed_events = (ErtsPollEvents) 0;
}
- state->driver.select = NULL;
state->type = ERTS_EV_TYPE_NONE;
remember_removed(state, &pollset);
}
@@ -821,12 +1179,22 @@ ERTS_CIO_EXPORT(driver_event)(ErlDrvPort ix,
ret = 0;
done:
-#ifndef ERTS_SYS_CONTINOUS_FD_NUMBERS
- if (state->type == ERTS_EV_TYPE_NONE && state->remove_cnt == 0) {
- hash_erase_drv_ev_state(state);
- }
+
+ check_fd_cleanup(state,
+#if ERTS_CIO_HAVE_DRV_EVENT
+ &free_event,
#endif
+ &free_select);
+
erts_smp_mtx_unlock(fd_mtx(fd));
+
+ if (free_select)
+ free_drv_select_data(free_select);
+#if ERTS_CIO_HAVE_DRV_EVENT
+ if (free_event)
+ free_drv_event_data(free_event);
+#endif
+
return ret;
#endif
}
@@ -1019,7 +1387,7 @@ steal_pending_stop_select(erts_dsprintf_buf_t *dsbufp, ErlDrvPort ix,
* In either case stop_select should not be called.
*/
state->type = ERTS_EV_TYPE_NONE;
- state->flags = 0;
+ state->flags &= ~ERTS_EV_FLAG_USED;
if (state->driver.drv_ptr->handle) {
erts_ddll_dereference_driver(state->driver.drv_ptr->handle);
}
@@ -1091,38 +1459,103 @@ event_large_fd_error(ErlDrvPort ix, ErtsSysFdType fd, ErlDrvEventData event_data
#endif
#endif
+static ERTS_INLINE int
+io_task_schedule_allowed(ErtsDrvEventState *state,
+ ErtsPortTaskType type,
+ erts_aint_t current_cio_time)
+{
+ ErtsIoTask *io_task;
+
+ switch (type) {
+ case ERTS_PORT_TASK_INPUT:
+ if (!state->driver.select)
+ return 0;
+#if ERTS_CIO_HAVE_DRV_EVENT
+ if (state->driver.event)
+ return 0;
+#endif
+ io_task = &state->driver.select->iniotask;
+ break;
+ case ERTS_PORT_TASK_OUTPUT:
+ if (!state->driver.select)
+ return 0;
+#if ERTS_CIO_HAVE_DRV_EVENT
+ if (state->driver.event)
+ return 0;
+#endif
+ io_task = &state->driver.select->outiotask;
+ break;
+#if ERTS_CIO_HAVE_DRV_EVENT
+ case ERTS_PORT_TASK_EVENT:
+ if (!state->driver.event)
+ return 0;
+ if (state->driver.select)
+ return 0;
+ io_task = &state->driver.event->iotask;
+ break;
+#endif
+ default:
+ ERTS_INTERNAL_ERROR("Invalid I/O-task type");
+ return 0;
+ }
+
+ return !is_iotask_active(io_task, current_cio_time);
+}
+
static ERTS_INLINE void
-iready(Eterm id, ErtsDrvEventState *state)
+iready(Eterm id, ErtsDrvEventState *state, erts_aint_t current_cio_time)
{
- if (erts_port_task_schedule(id,
- &state->driver.select->intask,
- ERTS_PORT_TASK_INPUT,
- (ErlDrvEvent) state->fd) != 0) {
- stale_drv_select(id, state, ERL_DRV_READ);
+ if (io_task_schedule_allowed(state,
+ ERTS_PORT_TASK_INPUT,
+ current_cio_time)) {
+ ErtsIoTask *iotask = &state->driver.select->iniotask;
+ erts_smp_atomic_set_nob(&iotask->executed_time, current_cio_time);
+ if (erts_port_task_schedule(id,
+ &iotask->task,
+ ERTS_PORT_TASK_INPUT,
+ (ErlDrvEvent) state->fd) != 0) {
+ stale_drv_select(id, state, ERL_DRV_READ);
+ }
+ add_active_fd(state->fd);
}
}
static ERTS_INLINE void
-oready(Eterm id, ErtsDrvEventState *state)
+oready(Eterm id, ErtsDrvEventState *state, erts_aint_t current_cio_time)
{
- if (erts_port_task_schedule(id,
- &state->driver.select->outtask,
- ERTS_PORT_TASK_OUTPUT,
- (ErlDrvEvent) state->fd) != 0) {
- stale_drv_select(id, state, ERL_DRV_WRITE);
+ if (io_task_schedule_allowed(state,
+ ERTS_PORT_TASK_OUTPUT,
+ current_cio_time)) {
+ ErtsIoTask *iotask = &state->driver.select->outiotask;
+ erts_smp_atomic_set_nob(&iotask->executed_time, current_cio_time);
+ if (erts_port_task_schedule(id,
+ &iotask->task,
+ ERTS_PORT_TASK_OUTPUT,
+ (ErlDrvEvent) state->fd) != 0) {
+ stale_drv_select(id, state, ERL_DRV_WRITE);
+ }
+ add_active_fd(state->fd);
}
}
#if ERTS_CIO_HAVE_DRV_EVENT
static ERTS_INLINE void
-eready(Eterm id, ErtsDrvEventState *state, ErlDrvEventData event_data)
+eready(Eterm id, ErtsDrvEventState *state, ErlDrvEventData event_data,
+ erts_aint_t current_cio_time)
{
- if (erts_port_task_schedule(id,
- &state->driver.event->task,
- ERTS_PORT_TASK_EVENT,
- (ErlDrvEvent) state->fd,
- event_data) != 0) {
- stale_drv_select(id, state, 0);
+ if (io_task_schedule_allowed(state,
+ ERTS_PORT_TASK_EVENT,
+ current_cio_time)) {
+ ErtsIoTask *iotask = &state->driver.event->iotask;
+ erts_smp_atomic_set_nob(&iotask->executed_time, current_cio_time);
+ if (erts_port_task_schedule(id,
+ &iotask->task,
+ ERTS_PORT_TASK_EVENT,
+ (ErlDrvEvent) state->fd,
+ event_data) != 0) {
+ stale_drv_select(id, state, 0);
+ }
+ add_active_fd(state->fd);
}
}
#endif
@@ -1153,10 +1586,11 @@ ERTS_CIO_EXPORT(erts_check_io_interrupt_timed)(int set,
void
ERTS_CIO_EXPORT(erts_check_io)(int do_wait)
{
- ErtsPollResFd pollres[256];
+ ErtsPollResFd *pollres;
int pollres_len;
SysTimeval wait_time;
int poll_ret, i;
+ erts_aint_t current_cio_time;
restart:
@@ -1173,10 +1607,24 @@ ERTS_CIO_EXPORT(erts_check_io)(int do_wait)
wait_time.tv_usec = 0;
}
+ /*
+ * No need for an atomic inc op when incrementing
+ * erts_check_io_time, since only one thread can
+ * check io at a time.
+ */
+ current_cio_time = erts_smp_atomic_read_dirty(&erts_check_io_time);
+ current_cio_time++;
+ erts_smp_atomic_set_relb(&erts_check_io_time, current_cio_time);
+
+ check_cleanup_active_fds(current_cio_time);
+
#ifdef ERTS_ENABLE_LOCK_CHECK
erts_lc_check_exact(NULL, 0); /* No locks should be locked */
#endif
- pollres_len = sizeof(pollres)/sizeof(ErtsPollResFd);
+
+ pollres_len = erts_smp_atomic32_read_dirty(&pollset.active_fd.no) + ERTS_CHECK_IO_POLL_RES_LEN;
+
+ pollres = erts_alloc(ERTS_ALC_T_TMP, sizeof(ErtsPollResFd)*pollres_len);
erts_smp_atomic_set_nob(&pollset.in_poll_wait, 1);
@@ -1196,6 +1644,7 @@ ERTS_CIO_EXPORT(erts_check_io)(int do_wait)
if (poll_ret != 0) {
erts_smp_atomic_set_nob(&pollset.in_poll_wait, 0);
forget_removed(&pollset);
+ erts_free(ERTS_ALC_T_TMP, pollres);
if (poll_ret == EAGAIN) {
goto restart;
}
@@ -1255,15 +1704,15 @@ ERTS_CIO_EXPORT(erts_check_io)(int do_wait)
if ((revents & ERTS_POLL_EV_IN)
|| (!(revents & ERTS_POLL_EV_OUT)
&& state->events & ERTS_POLL_EV_IN)) {
- iready(state->driver.select->inport, state);
+ iready(state->driver.select->inport, state, current_cio_time);
}
else if (state->events & ERTS_POLL_EV_OUT) {
- oready(state->driver.select->outport, state);
+ oready(state->driver.select->outport, state, current_cio_time);
}
}
else if (revents & (ERTS_POLL_EV_IN|ERTS_POLL_EV_OUT)) {
if (revents & ERTS_POLL_EV_OUT) {
- oready(state->driver.select->outport, state);
+ oready(state->driver.select->outport, state, current_cio_time);
}
/* Someone might have deselected input since revents
was read (true also on the non-smp emulator since
@@ -1271,7 +1720,7 @@ ERTS_CIO_EXPORT(erts_check_io)(int do_wait)
revents... */
revents &= ~(~state->events & ERTS_POLL_EV_IN);
if (revents & ERTS_POLL_EV_IN) {
- iready(state->driver.select->inport, state);
+ iready(state->driver.select->inport, state, current_cio_time);
}
}
else if (revents & ERTS_POLL_EV_NVAL) {
@@ -1279,6 +1728,7 @@ ERTS_CIO_EXPORT(erts_check_io)(int do_wait)
state->driver.select->inport,
state->driver.select->outport,
state->events);
+ add_active_fd(state->fd);
}
break;
}
@@ -1296,8 +1746,7 @@ ERTS_CIO_EXPORT(erts_check_io)(int do_wait)
if (revents) {
event_data->events = state->events;
event_data->revents = revents;
-
- eready(state->driver.event->port, state, event_data);
+ eready(state->driver.event->port, state, event_data, current_cio_time);
}
break;
}
@@ -1315,6 +1764,7 @@ ERTS_CIO_EXPORT(erts_check_io)(int do_wait)
(int) state->type);
ASSERT(0);
deselect(state, 0);
+ add_active_fd(state->fd);
break;
}
}
@@ -1326,6 +1776,7 @@ ERTS_CIO_EXPORT(erts_check_io)(int do_wait)
}
erts_smp_atomic_set_nob(&pollset.in_poll_wait, 0);
+ erts_free(ERTS_ALC_T_TMP, pollres);
forget_removed(&pollset);
}
@@ -1440,10 +1891,27 @@ static void drv_ev_state_free(void *des)
void
ERTS_CIO_EXPORT(erts_init_check_io)(void)
{
+ erts_smp_atomic_init_nob(&erts_check_io_time, 0);
erts_smp_atomic_init_nob(&pollset.in_poll_wait, 0);
+
ERTS_CIO_POLL_INIT();
pollset.ps = ERTS_CIO_NEW_POLLSET();
+ pollset.active_fd.six = 0;
+ pollset.active_fd.eix = 0;
+ erts_smp_atomic32_init_nob(&pollset.active_fd.no, 0);
+ pollset.active_fd.size = ERTS_ACTIVE_FD_INC;
+ pollset.active_fd.array = erts_alloc(ERTS_ALC_T_ACTIVE_FD_ARR,
+ sizeof(ErtsSysFdType)*ERTS_ACTIVE_FD_INC);
+#ifdef DEBUG
+ {
+ int i;
+ for (i = 0; i < ERTS_ACTIVE_FD_INC; i++)
+ pollset.active_fd.array[i] = ERTS_SYS_FD_INVALID;
+ }
+#endif
+
+
#ifdef ERTS_SMP
init_removed_fd_alloc();
pollset.removed_list = NULL;
@@ -1519,12 +1987,27 @@ Eterm
ERTS_CIO_EXPORT(erts_check_io_info)(void *proc)
{
Process *p = (Process *) proc;
- Eterm tags[15], values[15], res;
+ Eterm tags[16], values[16], res;
Uint sz, *szp, *hp, **hpp, memory_size;
Sint i;
ErtsPollInfo pi;
-
- ERTS_CIO_POLL_INFO(pollset.ps, &pi);
+ erts_aint_t cio_time = erts_smp_atomic_read_acqb(&erts_check_io_time);
+ int active_fds = (int) erts_smp_atomic32_read_acqb(&pollset.active_fd.no);
+
+ while (1) {
+ erts_aint_t post_cio_time;
+ int post_active_fds;
+
+ ERTS_CIO_POLL_INFO(pollset.ps, &pi);
+
+ post_cio_time = erts_smp_atomic_read_mb(&erts_check_io_time);
+ post_active_fds = (int) erts_smp_atomic32_read_acqb(&pollset.active_fd.no);
+ if (cio_time == post_cio_time && active_fds == post_active_fds)
+ break;
+ cio_time = post_cio_time;
+ active_fds = post_active_fds;
+ }
+
memory_size = pi.memory_size;
#ifdef ERTS_SYS_CONTINOUS_FD_NUMBERS
memory_size += sizeof(ErtsDrvEventState) * erts_smp_atomic_read_nob(&drv_ev_state_len);
@@ -1588,6 +2071,9 @@ ERTS_CIO_EXPORT(erts_check_io_info)(void *proc)
tags[i] = erts_bld_atom(hpp, szp, "max_fds");
values[i++] = erts_bld_uint(hpp, szp, (Uint) pi.max_fds);
+ tags[i] = erts_bld_atom(hpp, szp, "active_fds");
+ values[i++] = erts_bld_uint(hpp, szp, (Uint) active_fds);
+
#ifdef ERTS_POLL_COUNT_AVOIDED_WAKEUPS
tags[i] = erts_bld_atom(hpp, szp, "no_avoided_wakeups");
values[i++] = erts_bld_uint(hpp, szp, (Uint) pi.no_avoided_wakeups);
@@ -1642,6 +2128,8 @@ print_events(ErtsPollEvents ev)
typedef struct {
int used_fds;
int num_errors;
+ int no_driver_select_structs;
+ int no_driver_event_structs;
#ifdef ERTS_SYS_CONTINOUS_FD_NUMBERS
int internal_fds;
ErtsPollEvents *epep;
@@ -1664,6 +2152,13 @@ static void doit_erts_check_io_debug(void *vstate, void *vcounters)
struct stat stat_buf;
#endif
+ if (state->driver.select)
+ counters->no_driver_select_structs++;
+#if ERTS_CIO_HAVE_DRV_EVENT
+ if (state->driver.event)
+ counters->no_driver_event_structs++;
+#endif
+
#ifdef ERTS_SYS_CONTINOUS_FD_NUMBERS
if (state->events || ep_events) {
if (ep_events & ERTS_POLL_EV_NVAL) {
@@ -1802,6 +2297,7 @@ static void doit_erts_check_io_debug(void *vstate, void *vcounters)
}
}
}
+#if ERTS_CIO_HAVE_DRV_EVENT
else if (state->type == ERTS_EV_TYPE_DRV_EV) {
Eterm id;
erts_printf("driver_event ");
@@ -1837,6 +2333,7 @@ static void doit_erts_check_io_debug(void *vstate, void *vcounters)
erts_free_port_names(pnp);
}
}
+#endif
#ifdef ERTS_SYS_CONTINOUS_FD_NUMBERS
else if (internal) {
erts_printf("internal ");
@@ -1876,7 +2373,7 @@ static void doit_erts_check_io_debug(void *vstate, void *vcounters)
}
int
-ERTS_CIO_EXPORT(erts_check_io_debug)(void)
+ERTS_CIO_EXPORT(erts_check_io_debug)(ErtsCheckIoDebugInfo *ciodip)
{
#ifdef ERTS_SYS_CONTINOUS_FD_NUMBERS
int fd, len;
@@ -1885,6 +2382,10 @@ ERTS_CIO_EXPORT(erts_check_io_debug)(void)
ErtsDrvEventState null_des;
null_des.driver.select = NULL;
+#if ERTS_CIO_HAVE_DRV_EVENT
+ null_des.driver.event = NULL;
+#endif
+ null_des.driver.drv_ptr = NULL;
null_des.events = 0;
null_des.remove_cnt = 0;
null_des.type = ERTS_EV_TYPE_NONE;
@@ -1904,6 +2405,8 @@ ERTS_CIO_EXPORT(erts_check_io_debug)(void)
#endif
counters.used_fds = 0;
counters.num_errors = 0;
+ counters.no_driver_select_structs = 0;
+ counters.no_driver_event_structs = 0;
#ifdef ERTS_SYS_CONTINOUS_FD_NUMBERS
len = erts_smp_atomic_read_nob(&drv_ev_state_len);
@@ -1920,8 +2423,16 @@ ERTS_CIO_EXPORT(erts_check_io_debug)(void)
erts_smp_thr_progress_unblock();
+ ciodip->no_used_fds = counters.used_fds;
+ ciodip->no_driver_select_structs = counters.no_driver_select_structs;
+ ciodip->no_driver_event_structs = counters.no_driver_event_structs;
+
erts_printf("\n");
erts_printf("used fds=%d\n", counters.used_fds);
+ erts_printf("Number of driver_select() structures=%d\n", counters.no_driver_select_structs);
+#if ERTS_CIO_HAVE_DRV_EVENT
+ erts_printf("Number of driver_event() structures=%d\n", counters.no_driver_event_structs);
+#endif
#ifdef ERTS_SYS_CONTINOUS_FD_NUMBERS
erts_printf("internal fds=%d\n", counters.internal_fds);
#endif
@@ -1930,6 +2441,7 @@ ERTS_CIO_EXPORT(erts_check_io_debug)(void)
#ifdef ERTS_SYS_CONTINOUS_FD_NUMBERS
erts_free(ERTS_ALC_T_TMP, (void *) counters.epep);
#endif
+
return counters.num_errors;
}
diff --git a/erts/emulator/sys/common/erl_check_io.h b/erts/emulator/sys/common/erl_check_io.h
index edab7947ba..d01297d55c 100644
--- a/erts/emulator/sys/common/erl_check_io.h
+++ b/erts/emulator/sys/common/erl_check_io.h
@@ -26,6 +26,7 @@
#ifndef ERL_CHECK_IO_H__
#define ERL_CHECK_IO_H__
+#include "sys.h"
#include "erl_sys_driver.h"
#ifdef ERTS_ENABLE_KERNEL_POLL
@@ -52,8 +53,8 @@ void erts_check_io_kp(int);
void erts_check_io_nkp(int);
void erts_init_check_io_kp(void);
void erts_init_check_io_nkp(void);
-int erts_check_io_debug_kp(void);
-int erts_check_io_debug_nkp(void);
+int erts_check_io_debug_kp(ErtsCheckIoDebugInfo *);
+int erts_check_io_debug_nkp(ErtsCheckIoDebugInfo *);
#else /* !ERTS_ENABLE_KERNEL_POLL */
@@ -70,6 +71,27 @@ void erts_init_check_io(void);
#endif
+extern erts_smp_atomic_t erts_check_io_time;
+
+typedef struct {
+ ErtsPortTaskHandle task;
+ erts_smp_atomic_t executed_time;
+} ErtsIoTask;
+
+ERTS_GLB_INLINE void erts_io_notify_port_task_executed(ErtsPortTaskHandle *pthp);
+
+#if ERTS_GLB_INLINE_INCL_FUNC_DEF
+
+ERTS_GLB_INLINE void
+erts_io_notify_port_task_executed(ErtsPortTaskHandle *pthp)
+{
+ ErtsIoTask *itp = (ErtsIoTask *) (((char *) pthp) - offsetof(ErtsIoTask, task));
+ erts_aint_t ci_time = erts_smp_atomic_read_acqb(&erts_check_io_time);
+ erts_smp_atomic_set_relb(&itp->executed_time, ci_time);
+}
+
+#endif
+
#endif /* ERL_CHECK_IO_H__ */
#if !defined(ERL_CHECK_IO_C__) && !defined(ERTS_ALLOC_C__)
@@ -81,6 +103,16 @@ void erts_init_check_io(void);
#include "erl_poll.h"
#include "erl_port_task.h"
+#ifdef __WIN32__
+/*
+ * Current erts_poll implementation for Windows cannot handle
+ * active events in the set of events polled.
+ */
+# define ERTS_CIO_DEFER_ACTIVE_EVENTS 1
+#else
+# define ERTS_CIO_DEFER_ACTIVE_EVENTS 0
+#endif
+
/*
* ErtsDrvEventDataState is used by driver_event() which is almost never
* used. We allocate ErtsDrvEventDataState separate since we dont wan't
@@ -91,13 +123,16 @@ typedef struct {
Eterm port;
ErlDrvEventData data;
ErtsPollEvents removed_events;
- ErtsPortTaskHandle task;
+#if ERTS_CIO_DEFER_ACTIVE_EVENTS
+ ErtsPollEvents deferred_events;
+#endif
+ ErtsIoTask iotask;
} ErtsDrvEventDataState;
typedef struct {
Eterm inport;
Eterm outport;
- ErtsPortTaskHandle intask;
- ErtsPortTaskHandle outtask;
+ ErtsIoTask iniotask;
+ ErtsIoTask outiotask;
} ErtsDrvSelectDataState;
#endif /* #ifndef ERL_CHECK_IO_INTERNAL__ */
diff --git a/erts/emulator/sys/common/erl_sys_common_misc.c b/erts/emulator/sys/common/erl_sys_common_misc.c
index 31ad3b82d5..c5e804a62d 100644
--- a/erts/emulator/sys/common/erl_sys_common_misc.c
+++ b/erts/emulator/sys/common/erl_sys_common_misc.c
@@ -44,6 +44,14 @@
#endif
#endif
+/*
+ * erts_check_io_time is used by the erl_check_io implementation. The
+ * global erts_check_io_time variable is declared here since there
+ * (often) exist two versions of erl_check_io (kernel-poll and
+ * non-kernel-poll), and we dont want two versions of this variable.
+ */
+erts_smp_atomic_t erts_check_io_time;
+
/* Written once and only once */
static int filename_encoding = ERL_FILENAME_UNKNOWN;
diff --git a/erts/emulator/sys/unix/erl_unix_sys.h b/erts/emulator/sys/unix/erl_unix_sys.h
index 2c47aa06c2..2c86bf5fd1 100644
--- a/erts/emulator/sys/unix/erl_unix_sys.h
+++ b/erts/emulator/sys/unix/erl_unix_sys.h
@@ -130,9 +130,6 @@
/* File descriptors are numbers anc consecutively allocated on Unix */
#define ERTS_SYS_CONTINOUS_FD_NUMBERS
-#define HAVE_ERTS_CHECK_IO_DEBUG
-int erts_check_io_debug(void);
-
#ifndef ERTS_SMP
# undef ERTS_POLL_NEED_ASYNC_INTERRUPT_SUPPORT
# define ERTS_POLL_NEED_ASYNC_INTERRUPT_SUPPORT
diff --git a/erts/emulator/sys/unix/sys.c b/erts/emulator/sys/unix/sys.c
index 61f9f6a59a..ada62f71f9 100644
--- a/erts/emulator/sys/unix/sys.c
+++ b/erts/emulator/sys/unix/sys.c
@@ -277,7 +277,7 @@ struct {
void (*check_io)(int);
Uint (*size)(void);
Eterm (*info)(void *);
- int (*check_io_debug)(void);
+ int (*check_io_debug)(ErtsCheckIoDebugInfo *);
} io_func = {0};
@@ -299,9 +299,9 @@ Eterm erts_check_io_info(void *p)
}
int
-erts_check_io_debug(void)
+erts_check_io_debug(ErtsCheckIoDebugInfo *ip)
{
- return (*io_func.check_io_debug)();
+ return (*io_func.check_io_debug)(ip);
}
diff --git a/erts/emulator/sys/win32/erl_poll.c b/erts/emulator/sys/win32/erl_poll.c
index 7a1d129cd5..972170d465 100644
--- a/erts/emulator/sys/win32/erl_poll.c
+++ b/erts/emulator/sys/win32/erl_poll.c
@@ -1085,7 +1085,7 @@ void erts_poll_controlv(ErtsPollSet ps,
pcev[i].events,
pcev[i].on);
}
- ERTS_POLLSET_LOCK(ps);
+ ERTS_POLLSET_UNLOCK(ps);
HARDTRACEF(("Out erts_poll_controlv"));
}
diff --git a/erts/emulator/sys/win32/erl_win_sys.h b/erts/emulator/sys/win32/erl_win_sys.h
index 0deb097b1a..74b15d3534 100644
--- a/erts/emulator/sys/win32/erl_win_sys.h
+++ b/erts/emulator/sys/win32/erl_win_sys.h
@@ -107,12 +107,10 @@
/*
* Our own type of "FD's"
*/
+#define ERTS_SYS_FD_INVALID INVALID_HANDLE_VALUE
#define ERTS_SYS_FD_TYPE HANDLE
#define NO_FSTAT_ON_SYS_FD_TYPE 1 /* They are events, not files */
-#define HAVE_ERTS_CHECK_IO_DEBUG
-int erts_check_io_debug(void);
-
/*
* For erl_time_sup
*/
diff --git a/erts/emulator/test/a_SUITE.erl b/erts/emulator/test/a_SUITE.erl
index 195c9c0a5f..17579be416 100644
--- a/erts/emulator/test/a_SUITE.erl
+++ b/erts/emulator/test/a_SUITE.erl
@@ -97,23 +97,13 @@ display_check_io(ChkIo) ->
catch erlang:display('--- CHECK IO INFO ---'),
catch erlang:display(ChkIo),
catch erts_debug:set_internal_state(available_internal_state, true),
- NoOfErrorFds = (catch erts_debug:get_internal_state(check_io_debug)),
+ NoOfErrorFds = (catch element(1, erts_debug:get_internal_state(check_io_debug))),
catch erlang:display({'NoOfErrorFds', NoOfErrorFds}),
catch erts_debug:set_internal_state(available_internal_state, false),
catch erlang:display('--- CHECK IO INFO ---'),
ok.
get_check_io_info() ->
- ChkIo = erlang:system_info(check_io),
- case lists:keysearch(pending_updates, 1, ChkIo) of
- {value, {pending_updates, 0}} ->
- display_check_io(ChkIo),
- ChkIo;
- false ->
- ChkIo;
- _ ->
- receive after 10 -> ok end,
- get_check_io_info()
- end.
+ z_SUITE:get_check_io_info().
diff --git a/erts/emulator/test/driver_SUITE.erl b/erts/emulator/test/driver_SUITE.erl
index 7087542899..269e50f3ce 100644
--- a/erts/emulator/test/driver_SUITE.erl
+++ b/erts/emulator/test/driver_SUITE.erl
@@ -31,8 +31,9 @@
end_per_suite/1, init_per_group/2,end_per_group/2,
init_per_testcase/2,
end_per_testcase/2,
+
+ a_test/1,
outputv_echo/1,
-
timer_measure/1,
timer_cancel/1,
timer_change/1,
@@ -79,7 +80,8 @@
thr_free_drv/1,
async_blast/1,
thr_msg_blast/1,
- consume_timeslice/1]).
+ consume_timeslice/1,
+ z_test/1]).
-export([bin_prefix/2]).
@@ -122,19 +124,19 @@ init_per_testcase(Case, Config) when is_atom(Case), is_list(Config) ->
_ -> erts_debug:set_internal_state(available_internal_state, true)
end,
erlang:display({init_per_testcase, Case}),
- ?line 0 = erts_debug:get_internal_state(check_io_debug),
+ ?line 0 = element(1, erts_debug:get_internal_state(check_io_debug)),
[{watchdog, Dog},{testcase, Case}|Config].
end_per_testcase(Case, Config) ->
Dog = ?config(watchdog, Config),
erlang:display({end_per_testcase, Case}),
- ?line 0 = erts_debug:get_internal_state(check_io_debug),
+ ?line 0 = element(1, erts_debug:get_internal_state(check_io_debug)),
?t:timetrap_cancel(Dog).
suite() -> [{ct_hooks,[ts_install_cth]}].
-all() ->
- [outputv_errors, outputv_echo, queue_echo, {group, timer},
+all() -> %% Keep a_test first and z_test last...
+ [a_test, outputv_errors, outputv_echo, queue_echo, {group, timer},
driver_unloaded, io_ready_exit, use_fallback_pollset,
bad_fd_in_pollset, driver_event, fd_change,
steal_control, otp_6602, driver_system_info_base_ver,
@@ -151,7 +153,8 @@ all() ->
thr_free_drv,
async_blast,
thr_msg_blast,
- consume_timeslice].
+ consume_timeslice,
+ z_test].
groups() ->
[{timer, [],
@@ -917,8 +920,7 @@ steal_control_test(Hndl = {erts_poll_info, Before}) ->
end.
chkio_test_init(Config) when is_list(Config) ->
- ?line wait_until_no_pending_updates(),
- ?line ChkIo = erlang:system_info(check_io),
+ ?line ChkIo = get_stable_check_io_info(),
?line case catch lists:keysearch(name, 1, ChkIo) of
{value, {name, erts_poll}} ->
?line ?t:format("Before test: ~p~n", [ChkIo]),
@@ -937,8 +939,7 @@ chkio_test_fini({skipped, _} = Res) ->
chkio_test_fini({chkio_test_result, Res, Before}) ->
?line ok = erl_ddll:unload_driver('chkio_drv'),
?line ok = erl_ddll:stop(),
- ?line wait_until_no_pending_updates(),
- ?line After = erlang:system_info(check_io),
+ ?line After = get_stable_check_io_info(),
?line ?t:format("After test: ~p~n", [After]),
?line verify_chkio_state(Before, After),
?line Res.
@@ -985,7 +986,7 @@ chkio_test({erts_poll_info, Before},
?line Fun(),
?line During = erlang:system_info(check_io),
?line erlang:display(During),
- ?line 0 = erts_debug:get_internal_state(check_io_debug),
+ ?line 0 = element(1, erts_debug:get_internal_state(check_io_debug)),
?line ?t:format("During test: ~p~n", [During]),
?line chk_chkio_port(Port),
?line case erlang:port_control(Port, ?CHKIO_STOP, "") of
@@ -1034,18 +1035,22 @@ verify_chkio_state(Before, After) ->
After)
end,
?line ok.
-
-
-wait_until_no_pending_updates() ->
- case lists:keysearch(pending_updates, 1, erlang:system_info(check_io)) of
- {value, {pending_updates, 0}} ->
- ok;
- false ->
- ok;
+get_stable_check_io_info() ->
+ ChkIo = erlang:system_info(check_io),
+ PendUpdNo = case lists:keysearch(pending_updates, 1, ChkIo) of
+ {value, {pending_updates, PendNo}} ->
+ PendNo;
+ false ->
+ 0
+ end,
+ {value, {active_fds, ActFds}} = lists:keysearch(active_fds, 1, ChkIo),
+ case {PendUpdNo, ActFds} of
+ {0, 0} ->
+ ChkIo;
_ ->
receive after 10 -> ok end,
- wait_until_no_pending_updates()
+ get_stable_check_io_info()
end.
otp_6602(doc) -> ["Missed port lock when stealing control of fd from a "
@@ -2374,10 +2379,25 @@ count_proc_sched(Ps, PNs) ->
PNs
end.
+a_test(Config) when is_list(Config) ->
+ check_io_debug().
+
+z_test(Config) when is_list(Config) ->
+ check_io_debug().
+
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%% Utilities
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+check_io_debug() ->
+ get_stable_check_io_info(),
+ {NoErrorFds, NoUsedFds, NoDrvSelStructs, NoDrvEvStructs}
+ = erts_debug:get_internal_state(check_io_debug),
+ 0 = NoErrorFds,
+ NoUsedFds = NoDrvSelStructs,
+ 0 = NoDrvEvStructs,
+ ok.
+
%flush_msgs() ->
% receive
% M ->
diff --git a/erts/emulator/test/z_SUITE.erl b/erts/emulator/test/z_SUITE.erl
index 4b3075a164..b0c6224dfe 100644
--- a/erts/emulator/test/z_SUITE.erl
+++ b/erts/emulator/test/z_SUITE.erl
@@ -38,7 +38,7 @@
-export([schedulers_alive/1, node_container_refc_check/1,
long_timers/1, pollset_size/1,
- check_io_debug/1]).
+ check_io_debug/1, get_check_io_info/0]).
-define(DEFAULT_TIMEOUT, ?t:minutes(5)).
@@ -288,11 +288,14 @@ check_io_debug(Config) when is_list(Config) ->
end.
check_io_debug_test() ->
+ ?line erlang:display(get_check_io_info()),
?line erts_debug:set_internal_state(available_internal_state, true),
- ?line erlang:display(erlang:system_info(check_io)),
- ?line NoOfErrorFds = erts_debug:get_internal_state(check_io_debug),
+ ?line {NoErrorFds, NoUsedFds, NoDrvSelStructs, NoDrvEvStructs}
+ = erts_debug:get_internal_state(check_io_debug),
?line erts_debug:set_internal_state(available_internal_state, false),
- ?line 0 = NoOfErrorFds,
+ ?line 0 = NoErrorFds,
+ ?line NoUsedFds = NoDrvSelStructs,
+ ?line 0 = NoDrvEvStructs,
?line ok.
@@ -305,7 +308,7 @@ display_check_io(ChkIo) ->
catch erlang:display('--- CHECK IO INFO ---'),
catch erlang:display(ChkIo),
catch erts_debug:set_internal_state(available_internal_state, true),
- NoOfErrorFds = (catch erts_debug:get_internal_state(check_io_debug)),
+ NoOfErrorFds = (catch element(1, erts_debug:get_internal_state(check_io_debug))),
catch erlang:display({'NoOfErrorFds', NoOfErrorFds}),
catch erts_debug:set_internal_state(available_internal_state, false),
catch erlang:display('--- CHECK IO INFO ---'),
@@ -313,14 +316,19 @@ display_check_io(ChkIo) ->
get_check_io_info() ->
ChkIo = erlang:system_info(check_io),
- case lists:keysearch(pending_updates, 1, ChkIo) of
- {value, {pending_updates, 0}} ->
+ PendUpdNo = case lists:keysearch(pending_updates, 1, ChkIo) of
+ {value, {pending_updates, PendNo}} ->
+ PendNo;
+ false ->
+ 0
+ end,
+ {value, {active_fds, ActFds}} = lists:keysearch(active_fds, 1, ChkIo),
+ case {PendUpdNo, ActFds} of
+ {0, 0} ->
display_check_io(ChkIo),
ChkIo;
- false ->
- ChkIo;
_ ->
- receive after 10 -> ok end,
+ receive after 100 -> ok end,
get_check_io_info()
end.
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-01 04:45:01 +0000