diff options
Diffstat (limited to 'erts/emulator/sys/common/erl_check_io.c')
-rw-r--r-- | erts/emulator/sys/common/erl_check_io.c | 91 |
1 files changed, 36 insertions, 55 deletions
diff --git a/erts/emulator/sys/common/erl_check_io.c b/erts/emulator/sys/common/erl_check_io.c index 0051b45b31..44a77f3ea5 100644 --- a/erts/emulator/sys/common/erl_check_io.c +++ b/erts/emulator/sys/common/erl_check_io.c @@ -1,18 +1,19 @@ /* * %CopyrightBegin% * - * Copyright Ericsson AB 2006-2013. All Rights Reserved. + * Copyright Ericsson AB 2006-2016. 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. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. * * %CopyrightEnd% */ @@ -38,9 +39,11 @@ #include "erl_check_io.h" #include "erl_thr_progress.h" #include "dtrace-wrapper.h" +#include "lttng-wrapper.h" +#define ERTS_WANT_TIMER_WHEEL_API +#include "erl_time.h" -#ifdef ERTS_SYS_CONTINOUS_FD_NUMBERS -#else +#ifndef ERTS_SYS_CONTINOUS_FD_NUMBERS # include "safe_hash.h" # define DRV_EV_STATE_HTAB_SIZE 1024 #endif @@ -393,6 +396,7 @@ forget_removed(struct pollset_info* psi) if (drv_ptr) { int was_unmasked = erts_block_fpe(); DTRACE1(driver_stop_select, drv_ptr->name); + LTTNG1(driver_stop_select, drv_ptr->name); (*drv_ptr->stop_select) ((ErlDrvEvent) fd, NULL); erts_unblock_fpe(was_unmasked); if (drv_ptr->handle) { @@ -411,14 +415,16 @@ static void grow_drv_ev_state(int min_ix) { int i; + int old_len; int new_len; - new_len = ERTS_POLL_EXPORT(erts_poll_get_table_len)(min_ix + 1); - if (new_len > max_fds) - new_len = max_fds; - erts_smp_mtx_lock(&drv_ev_state_grow_lock); - if (erts_smp_atomic_read_nob(&drv_ev_state_len) <= min_ix) { + old_len = erts_smp_atomic_read_nob(&drv_ev_state_len); + if (min_ix >= old_len) { + new_len = erts_poll_new_table_len(old_len, min_ix + 1); + if (new_len > max_fds) + new_len = max_fds; + for (i=0; i<DRV_EV_STATE_LOCK_CNT; i++) { /* lock all fd's */ erts_smp_mtx_lock(&drv_ev_state_locks[i].lck); } @@ -428,7 +434,7 @@ grow_drv_ev_state(int min_ix) sizeof(ErtsDrvEventState)*new_len) : erts_alloc(ERTS_ALC_T_DRV_EV_STATE, sizeof(ErtsDrvEventState)*new_len)); - for (i = erts_smp_atomic_read_nob(&drv_ev_state_len); i < new_len; i++) { + for (i = old_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 @@ -1051,6 +1057,7 @@ done_unknown: if (stop_select_fn) { int was_unmasked = erts_block_fpe(); DTRACE1(driver_stop_select, name); + LTTNG1(driver_stop_select, "unknown"); (*stop_select_fn)(e, NULL); erts_unblock_fpe(was_unmasked); } @@ -1333,11 +1340,7 @@ print_select_op(erts_dsprintf_buf_t *dsbufp, { Port *pp = erts_drvport2port(ix); erts_dsprintf(dsbufp, -#ifdef __OSE__ - "driver_select(%p, %d,%s%s%s%s | %d, %d) " -#else "driver_select(%p, %d,%s%s%s%s, %d) " -#endif "by ", ix, (int) GET_FD(fd), @@ -1590,9 +1593,9 @@ 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 +1603,12 @@ 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 +1618,9 @@ 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) + : ERTS_POLL_NO_TIMEOUT /* poll only */); /* * No need for an atomic inc op when incrementing @@ -1640,14 +1643,12 @@ 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(); @@ -1859,25 +1860,6 @@ stale_drv_select(Eterm id, ErtsDrvEventState *state, int mode) #ifndef ERTS_SYS_CONTINOUS_FD_NUMBERS -#ifdef __OSE__ -static SafeHashValue drv_ev_state_hash(void *des) -{ - ErtsSysFdType fd = ((ErtsDrvEventState *) des)->fd; - /* We use hash on signo ^ id in order for steal to happen when the - same signo + fd is selected on by two different ports */ - SafeHashValue val = (SafeHashValue)(fd->signo ^ fd->id); - return val ^ (val >> 8); -} - -static int drv_ev_state_cmp(void *des1, void *des2) -{ - ErtsSysFdType fd1 = ((ErtsDrvEventState *) des1)->fd; - ErtsSysFdType fd2 = ((ErtsDrvEventState *) des2)->fd; - if (fd1->signo == fd2->signo && fd1->id == fd2->id) - return 0; - return 1; -} -#else /* !__OSE__ && !ERTS_SYS_CONTINOUS_FD_NUMBERS i.e. probably windows */ static SafeHashValue drv_ev_state_hash(void *des) { SafeHashValue val = (SafeHashValue) ((ErtsDrvEventState *) des)->fd; @@ -1889,7 +1871,6 @@ static int drv_ev_state_cmp(void *des1, void *des2) return ( ((ErtsDrvEventState *) des1)->fd == ((ErtsDrvEventState *) des2)->fd ? 0 : 1); } -#endif static void *drv_ev_state_alloc(void *des_tmpl) { |