diff options
Diffstat (limited to 'erts/emulator/sys/common')
-rw-r--r-- | erts/emulator/sys/common/erl_check_io.c | 760 | ||||
-rw-r--r-- | erts/emulator/sys/common/erl_check_io.h | 72 | ||||
-rw-r--r-- | erts/emulator/sys/common/erl_mmap.c | 33 | ||||
-rw-r--r-- | erts/emulator/sys/common/erl_mmap.h | 19 | ||||
-rw-r--r-- | erts/emulator/sys/common/erl_mseg.c | 23 | ||||
-rw-r--r-- | erts/emulator/sys/common/erl_mseg.h | 19 | ||||
-rw-r--r-- | erts/emulator/sys/common/erl_mtrace_sys_wrap.c | 21 | ||||
-rw-r--r-- | erts/emulator/sys/common/erl_os_monotonic_time_extender.c | 89 | ||||
-rw-r--r-- | erts/emulator/sys/common/erl_os_monotonic_time_extender.h | 66 | ||||
-rw-r--r-- | erts/emulator/sys/common/erl_poll.c | 464 | ||||
-rw-r--r-- | erts/emulator/sys/common/erl_poll.h | 39 | ||||
-rw-r--r-- | erts/emulator/sys/common/erl_sys_common_misc.c | 29 | ||||
-rw-r--r-- | erts/emulator/sys/common/erl_util_queue.h | 19 |
13 files changed, 1327 insertions, 326 deletions
diff --git a/erts/emulator/sys/common/erl_check_io.c b/erts/emulator/sys/common/erl_check_io.c index 1db673e7f3..105b129065 100644 --- a/erts/emulator/sys/common/erl_check_io.c +++ b/erts/emulator/sys/common/erl_check_io.c @@ -3,16 +3,17 @@ * * Copyright Ericsson AB 2006-2013. 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 +39,10 @@ #include "erl_check_io.h" #include "erl_thr_progress.h" #include "dtrace-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 @@ -52,8 +54,17 @@ 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 @@ -67,6 +78,7 @@ 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) @@ -85,6 +97,13 @@ 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; @@ -97,9 +116,11 @@ 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; @@ -169,6 +190,10 @@ 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; @@ -209,6 +234,69 @@ 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); +} + +#if ERTS_CIO_HAVE_DRV_EVENT + +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); +} + +#endif /* ERTS_CIO_HAVE_DRV_EVENT */ + +static ERTS_INLINE void remember_removed(ErtsDrvEventState *state, struct pollset_info* psi) { #ifdef ERTS_SMP @@ -288,7 +376,7 @@ 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: @@ -325,14 +413,16 @@ 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); } @@ -342,9 +432,13 @@ 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 + 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; @@ -365,11 +459,7 @@ 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)); } @@ -384,7 +474,7 @@ 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 @@ -398,14 +488,14 @@ 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: @@ -443,16 +533,14 @@ 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: @@ -462,20 +550,297 @@ 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, @@ -492,6 +857,10 @@ 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 @@ -593,9 +962,9 @@ 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; @@ -613,18 +982,10 @@ 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; @@ -645,17 +1006,12 @@ 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 */ } @@ -686,13 +1042,15 @@ 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(); @@ -700,6 +1058,12 @@ 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; } @@ -719,6 +1083,10 @@ 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) @@ -799,10 +1167,8 @@ 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; @@ -812,10 +1178,10 @@ 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); } @@ -825,12 +1191,22 @@ 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 } @@ -1027,7 +1403,7 @@ 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); } @@ -1099,38 +1475,103 @@ 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 @@ -1153,18 +1594,22 @@ 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 ERTS_CIO_EXPORT(erts_check_io)(int do_wait) { - ErtsPollResFd pollres[256]; + 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: @@ -1174,28 +1619,37 @@ 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 + * 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); - 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(); @@ -1204,6 +1658,7 @@ 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; } @@ -1263,15 +1718,15 @@ 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 @@ -1279,7 +1734,7 @@ 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) { @@ -1287,6 +1742,7 @@ 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; } @@ -1304,8 +1760,7 @@ 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; } @@ -1323,6 +1778,7 @@ ERTS_CIO_EXPORT(erts_check_io)(int do_wait) (int) state->type); ASSERT(0); deselect(state, 0); + add_active_fd(state->fd); break; } } @@ -1334,6 +1790,7 @@ 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); } @@ -1469,10 +1926,27 @@ 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; @@ -1548,12 +2022,27 @@ 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); @@ -1617,6 +2106,9 @@ 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); @@ -1671,6 +2163,8 @@ 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; @@ -1693,6 +2187,13 @@ 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) { @@ -1831,6 +2332,7 @@ 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 "); @@ -1866,6 +2368,7 @@ 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 "); @@ -1905,7 +2408,7 @@ 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; @@ -1915,6 +2418,10 @@ 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; @@ -1935,6 +2442,8 @@ 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); @@ -1951,8 +2460,16 @@ 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 @@ -1961,6 +2478,7 @@ 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..c8675a7d9d 100644 --- a/erts/emulator/sys/common/erl_check_io.h +++ b/erts/emulator/sys/common/erl_check_io.h @@ -3,16 +3,17 @@ * * Copyright Ericsson AB 2006-2011. 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% */ @@ -26,6 +27,7 @@ #ifndef ERL_CHECK_IO_H__ #define ERL_CHECK_IO_H__ +#include "sys.h" #include "erl_sys_driver.h" #ifdef ERTS_ENABLE_KERNEL_POLL @@ -46,14 +48,14 @@ 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); 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 */ @@ -64,12 +66,33 @@ 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); #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 +104,16 @@ 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 +124,16 @@ 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_mmap.c b/erts/emulator/sys/common/erl_mmap.c index 3f6813e1a5..4180e65fdc 100644 --- a/erts/emulator/sys/common/erl_mmap.c +++ b/erts/emulator/sys/common/erl_mmap.c @@ -3,16 +3,17 @@ * * Copyright Ericsson AB 2002-2013. 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/. + * 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 * - * 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. + * 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% */ @@ -1333,7 +1334,7 @@ os_unreserve_physical(char *ptr, UWord size) void *res = mmap((void *) ptr, (size_t) size, ERTS_MMAP_UNRESERVE_PROT, ERTS_MMAP_UNRESERVE_FLAGS, ERTS_MMAP_FD, 0); if (res == (void *) MAP_FAILED) - erl_exit(ERTS_ABORT_EXIT, "Failed to unreserve memory"); + erts_exit(ERTS_ABORT_EXIT, "Failed to unreserve memory"); } static void * @@ -2125,7 +2126,7 @@ erts_mmap_init(ErtsMMapInit *init) #endif erts_page_inv_mask = pagesize - 1; if (pagesize & erts_page_inv_mask) - erl_exit(-1, "erts_mmap: Invalid pagesize: %bpu\n", + erts_exit(1, "erts_mmap: Invalid pagesize: %bpu\n", pagesize); ERTS_MMAP_OP_RINGBUF_INIT(); @@ -2139,7 +2140,7 @@ erts_mmap_init(ErtsMMapInit *init) #if HAVE_MMAP && !defined(MAP_ANON) mmap_state.mmap_fd = open("/dev/zero", O_RDWR); if (mmap_state.mmap_fd < 0) - erl_exit(-1, "erts_mmap: Failed to open /dev/zero\n"); + erts_exit(1, "erts_mmap: Failed to open /dev/zero\n"); #endif erts_smp_mtx_init(&mmap_state.mtx, "erts_mmap"); @@ -2154,7 +2155,7 @@ erts_mmap_init(ErtsMMapInit *init) sz = end - ptr; start = os_mmap_virtual(ptr, sz); if (!start || start > ptr || start >= end) - erl_exit(-1, + erts_exit(1, "erts_mmap: Failed to create virtual range for super carrier\n"); sz = start - ptr; if (sz) @@ -2192,7 +2193,7 @@ erts_mmap_init(ErtsMMapInit *init) start = os_mmap(NULL, sz, 1); } if (!start) - erl_exit(-1, + erts_exit(1, "erts_mmap: Failed to create super carrier of size %bpu MB\n", init->scs/1024/1024); end = start + sz; @@ -2241,7 +2242,7 @@ erts_mmap_init(ErtsMMapInit *init) if ((desc_size + ERTS_SUPERALIGNED_SIZE + ERTS_PAGEALIGNED_SIZE) > end - start) - erl_exit(-1, "erts_mmap: No space for segments in super carrier\n"); + erts_exit(1, "erts_mmap: No space for segments in super carrier\n"); mmap_state.sa.bot = start; mmap_state.sa.bot += desc_size; @@ -2279,7 +2280,7 @@ erts_mmap_init(ErtsMMapInit *init) */ #ifdef ERTS_HAVE_OS_PHYSICAL_MEMORY_RESERVATION if (virtual_map && !os_reserve_physical(start, mmap_state.sa.bot - start)) - erl_exit(-1, "erts_mmap: Failed to reserve physical memory for descriptors\n"); + erts_exit(1, "erts_mmap: Failed to reserve physical memory for descriptors\n"); #endif mmap_state.desc.unused_start = start; mmap_state.desc.unused_end = mmap_state.sa.bot; diff --git a/erts/emulator/sys/common/erl_mmap.h b/erts/emulator/sys/common/erl_mmap.h index 778a8e0e80..66619c5161 100644 --- a/erts/emulator/sys/common/erl_mmap.h +++ b/erts/emulator/sys/common/erl_mmap.h @@ -3,16 +3,17 @@ * * Copyright Ericsson AB 2013. 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/. + * 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 * - * 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. + * 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% */ diff --git a/erts/emulator/sys/common/erl_mseg.c b/erts/emulator/sys/common/erl_mseg.c index 94a381e168..3398be2b07 100644 --- a/erts/emulator/sys/common/erl_mseg.c +++ b/erts/emulator/sys/common/erl_mseg.c @@ -3,16 +3,17 @@ * * Copyright Ericsson AB 2002-2013. 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/. + * 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 * - * 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. + * 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% */ @@ -1489,7 +1490,7 @@ erts_mseg_init(ErtsMsegInit_t *init) #if HALFWORD_HEAP if (sizeof(void *) != 8) - erl_exit(-1,"Halfword emulator cannot be run in 32bit mode"); + erts_exit(1,"Halfword emulator cannot be run in 32bit mode"); init->mmap.virtual_range.start = (char *) sbrk(0); init->mmap.virtual_range.end = (char *) 0x100000000UL; @@ -1499,7 +1500,7 @@ erts_mseg_init(ErtsMsegInit_t *init) erts_mmap_init(&init->mmap); if (!IS_2POW(GET_PAGE_SIZE)) - erl_exit(ERTS_ABORT_EXIT, "erts_mseg: Unexpected page_size %beu\n", GET_PAGE_SIZE); + erts_exit(ERTS_ABORT_EXIT, "erts_mseg: Unexpected page_size %beu\n", GET_PAGE_SIZE); ASSERT((MSEG_ALIGNED_SIZE % GET_PAGE_SIZE) == 0); diff --git a/erts/emulator/sys/common/erl_mseg.h b/erts/emulator/sys/common/erl_mseg.h index 2284b3f8f1..ba04e919fc 100644 --- a/erts/emulator/sys/common/erl_mseg.h +++ b/erts/emulator/sys/common/erl_mseg.h @@ -3,16 +3,17 @@ * * Copyright Ericsson AB 2002-2013. 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/. + * 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 * - * 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. + * 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% */ diff --git a/erts/emulator/sys/common/erl_mtrace_sys_wrap.c b/erts/emulator/sys/common/erl_mtrace_sys_wrap.c index 408aa7e016..a8c575835a 100644 --- a/erts/emulator/sys/common/erl_mtrace_sys_wrap.c +++ b/erts/emulator/sys/common/erl_mtrace_sys_wrap.c @@ -3,16 +3,17 @@ * * Copyright Ericsson AB 2004-2009. 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% */ 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..367b22d989 --- /dev/null +++ b/erts/emulator/sys/common/erl_os_monotonic_time_extender.c @@ -0,0 +1,89 @@ +/* + * %CopyrightBegin% + * + * Copyright Ericsson AB 2015. All Rights Reserved. + * + * 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% + */ + +#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); + } + + erts_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..8089c9aed9 --- /dev/null +++ b/erts/emulator/sys/common/erl_os_monotonic_time_extender.h @@ -0,0 +1,66 @@ +/* + * %CopyrightBegin% + * + * Copyright Ericsson AB 2015. All Rights Reserved. + * + * 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% + */ + +#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 0a58a625b2..21fa214364 100644 --- a/erts/emulator/sys/common/erl_poll.c +++ b/erts/emulator/sys/common/erl_poll.c @@ -3,16 +3,17 @@ * * Copyright Ericsson AB 2006-2013. 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/. + * 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 * - * 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. + * 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% */ @@ -153,9 +154,6 @@ int ERTS_SELECT(int nfds, ERTS_fd_set *readfds, ERTS_fd_set *writefds, #define ERTS_POLL_COALESCE_KP_RES (ERTS_POLL_USE_KQUEUE || ERTS_POLL_USE_EPOLL) -#define ERTS_EV_TABLE_MIN_LENGTH 1024 -#define ERTS_EV_TABLE_EXP_THRESHOLD (2048*1024) - #ifdef ERTS_POLL_NEED_ASYNC_INTERRUPT_SUPPORT # define ERTS_POLL_ASYNC_INTERRUPT_SUPPORT 1 #else @@ -314,13 +312,16 @@ struct ErtsPollSet_ { #if ERTS_POLL_USE_WAKEUP_PIPE int wake_fds[2]; #endif +#if ERTS_POLL_USE_TIMERFD + int timer_fd; +#endif #if ERTS_POLL_USE_FALLBACK int fallback_used; #endif #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 +385,26 @@ 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 @@ -410,7 +431,7 @@ static ERTS_INLINE int is_interrupted_reset(ErtsPollSet ps) { #if defined(USE_THREADS) || ERTS_POLL_ASYNC_INTERRUPT_SUPPORT - return (erts_atomic32_xchg_nob(&ps->wakeup_state, ERTS_POLL_NOT_WOKEN) + return (erts_atomic32_xchg_acqb(&ps->wakeup_state, ERTS_POLL_NOT_WOKEN) == ERTS_POLL_WOKEN_INTR); #else return 0; @@ -421,7 +442,7 @@ static ERTS_INLINE void woke_up(ErtsPollSet ps) { #if defined(USE_THREADS) || ERTS_POLL_ASYNC_INTERRUPT_SUPPORT - erts_aint32_t wakeup_state = erts_atomic32_read_nob(&ps->wakeup_state); + erts_aint32_t wakeup_state = erts_atomic32_read_acqb(&ps->wakeup_state); if (wakeup_state == ERTS_POLL_NOT_WOKEN) (void) erts_atomic32_cmpxchg_nob(&ps->wakeup_state, ERTS_POLL_WOKEN, @@ -448,14 +469,9 @@ wake_poller(ErtsPollSet ps, int interrupted, int async_signal_safe) wakeup_state = erts_atomic32_cmpxchg_relb(&ps->wakeup_state, ERTS_POLL_WOKEN, ERTS_POLL_NOT_WOKEN); - else { - /* - * We might unnecessarily write to the pipe, however, - * that isn't problematic. - */ - wakeup_state = erts_atomic32_read_nob(&ps->wakeup_state); - erts_atomic32_set_relb(&ps->wakeup_state, ERTS_POLL_WOKEN_INTR); - } + else + wakeup_state = erts_atomic32_xchg_relb(&ps->wakeup_state, + ERTS_POLL_WOKEN_INTR); wake = wakeup_state == ERTS_POLL_NOT_WOKEN; } /* @@ -560,6 +576,75 @@ create_wakeup_pipe(ErtsPollSet ps) #endif /* ERTS_POLL_USE_WAKEUP_PIPE */ /* + * --- timer fd ----------------------------------------------------------- + */ + +#if ERTS_POLL_USE_TIMERFD + +/* We use the timerfd when using epoll_wait to get high accuracy + timeouts, i.e. we want to sleep with < ms accuracy. */ + +static void +create_timerfd(ErtsPollSet ps) +{ + int do_wake = 0; + int timer_fd; + timer_fd = timerfd_create(CLOCK_MONOTONIC,0); + ERTS_POLL_EXPORT(erts_poll_control)(ps, + timer_fd, + ERTS_POLL_EV_IN, + 1, &do_wake); +#if ERTS_POLL_USE_FALLBACK + /* We depend on the wakeup pipe being handled by kernel poll */ + if (ps->fds_status[timer_fd].flags & ERTS_POLL_FD_FLG_INFLBCK) + fatal_error("%s:%d:create_wakeup_pipe(): Internal error\n", + __FILE__, __LINE__); +#endif + if (ps->internal_fd_limit <= timer_fd) + ps->internal_fd_limit = timer_fd + 1; + ps->timer_fd = timer_fd; +} + +static ERTS_INLINE void +timerfd_set(ErtsPollSet ps, struct itimerspec *its) +{ +#ifdef DEBUG + struct itimerspec old_its; + int res; + res = timerfd_settime(ps->timer_fd, 0, its, &old_its); + ASSERT(res == 0); + ASSERT(old_its.it_interval.tv_sec == 0 && + old_its.it_interval.tv_nsec == 0 && + old_its.it_value.tv_sec == 0 && + old_its.it_value.tv_nsec == 0); + +#else + timerfd_settime(ps->timer_fd, 0, its, NULL); +#endif +} + +static ERTS_INLINE int +timerfd_clear(ErtsPollSet ps, int res, int max_res) { + + struct itimerspec its; + /* we always have to clear the timer */ + its.it_interval.tv_sec = 0; + its.it_interval.tv_nsec = 0; + its.it_value.tv_sec = 0; + its.it_value.tv_nsec = 0; + timerfd_settime(ps->timer_fd, 0, &its, NULL); + + /* only timeout fd triggered */ + if (res == 1 && ps->res_events[0].data.fd == ps->timer_fd) + return 0; + + return res; +} + +#endif /* ERTS_POLL_USE_TIMERFD */ + + +/* * --- Poll set update requests ---------------------------------------------- */ #if ERTS_POLL_USE_UPDATE_REQUESTS_QUEUE @@ -611,27 +696,33 @@ free_update_requests_block(ErtsPollSet ps, * --- Growing poll set structures ------------------------------------------- */ -int -ERTS_POLL_EXPORT(erts_poll_get_table_len) (int new_len) +#ifndef ERTS_KERNEL_POLL_VERSION /* only one shared implementation */ + +#define ERTS_FD_TABLE_MIN_LENGTH 1024 +#define ERTS_FD_TABLE_EXP_THRESHOLD (2048*1024) + +int erts_poll_new_table_len (int old_len, int need_len) { - if (new_len < ERTS_EV_TABLE_MIN_LENGTH) { - new_len = ERTS_EV_TABLE_MIN_LENGTH; - } else if (new_len < ERTS_EV_TABLE_EXP_THRESHOLD) { - /* find next power of 2 */ - --new_len; - new_len |= new_len >> 1; - new_len |= new_len >> 2; - new_len |= new_len >> 4; - new_len |= new_len >> 8; - new_len |= new_len >> 16; - ++new_len; - } else { - /* grow incrementally */ - new_len += ERTS_EV_TABLE_EXP_THRESHOLD; + int new_len; + + ASSERT(need_len > old_len); + if (need_len < ERTS_FD_TABLE_MIN_LENGTH) { + new_len = ERTS_FD_TABLE_MIN_LENGTH; } + else { + new_len = old_len; + do { + if (new_len < ERTS_FD_TABLE_EXP_THRESHOLD) + new_len *= 2; + else + new_len += ERTS_FD_TABLE_EXP_THRESHOLD; + + } while (new_len < need_len); + } + ASSERT(new_len >= need_len); return new_len; } - +#endif #if ERTS_POLL_USE_KERNEL_POLL static void @@ -645,7 +736,7 @@ grow_res_events(ErtsPollSet ps, int new_len) #elif ERTS_POLL_USE_KQUEUE struct kevent #endif - ) * ERTS_POLL_EXPORT(erts_poll_get_table_len)(new_len); + ) * erts_poll_new_table_len(ps->res_events_len, new_len); /* We do not need to save previously stored data */ if (ps->res_events) erts_free(ERTS_ALC_T_POLL_RES_EVS, ps->res_events); @@ -659,7 +750,7 @@ static void grow_poll_fds(ErtsPollSet ps, int min_ix) { int i; - int new_len = ERTS_POLL_EXPORT(erts_poll_get_table_len)(min_ix + 1); + int new_len = erts_poll_new_table_len(ps->poll_fds_len, min_ix + 1); if (new_len > max_fds) new_len = max_fds; ps->poll_fds = (ps->poll_fds_len @@ -681,7 +772,7 @@ grow_poll_fds(ErtsPollSet ps, int min_ix) static void grow_select_fds(int fd, ERTS_fd_set* fds) { - int new_len = ERTS_POLL_EXPORT(erts_poll_get_table_len)(fd + 1); + int new_len = erts_poll_new_table_len(fds->sz, fd + 1); if (new_len > max_fds) new_len = max_fds; new_len = ERTS_FD_SIZE(new_len); @@ -708,7 +799,7 @@ static void grow_fds_status(ErtsPollSet ps, int min_fd) { int i; - int new_len = ERTS_POLL_EXPORT(erts_poll_get_table_len)(min_fd + 1); + int new_len = erts_poll_new_table_len(ps->fds_status_len, min_fd + 1); ASSERT(min_fd < max_fds); if (new_len > max_fds) new_len = max_fds; @@ -1497,6 +1588,12 @@ poll_control(ErtsPollSet ps, int fd, ErtsPollEvents events, int on, int *do_wake goto done; } #endif +#if ERTS_POLL_USE_TIMERFD + if (fd == ps->timer_fd) { + new_events = ERTS_POLL_EV_NVAL; + goto done; + } +#endif } if (fd >= ps->fds_status_len) @@ -1644,6 +1741,9 @@ save_kp_result(ErtsPollSet ps, ErtsPollResFd pr[], int max_res, int chk_fds_res) #if ERTS_POLL_USE_WAKEUP_PIPE int wake_fd = ps->wake_fds[0]; #endif +#if ERTS_POLL_USE_TIMERFD + int timer_fd = ps->timer_fd; +#endif for (i = 0; i < n; i++) { @@ -1659,6 +1759,11 @@ save_kp_result(ErtsPollSet ps, ErtsPollResFd pr[], int max_res, int chk_fds_res) continue; } #endif +#if ERTS_POLL_USE_TIMERFD + if (fd == timer_fd) { + continue; + } +#endif ASSERT(!(ps->fds_status[fd].flags & ERTS_POLL_FD_FLG_INFLBCK)); /* epoll_wait() can repeat the same fd in result array... */ ix = (int) ps->fds_status[fd].res_ev_ix; @@ -1733,6 +1838,11 @@ save_kp_result(ErtsPollSet ps, ErtsPollResFd pr[], int max_res, int chk_fds_res) continue; } #endif +#if ERTS_POLL_USE_TIMERFD + if (fd == timer_fd) { + continue; + } +#endif revents = ERTS_POLL_EV_N2E(ps->res_events[i].events); pr[res].fd = fd; pr[res].events = revents; @@ -1993,44 +2103,186 @@ 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(NULL); + 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 +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 || (ERTS_POLL_USE_POLL && defined(HAVE_PPOLL)) || ERTS_POLL_USE_TIMERFD + +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*1000); + + return !0; + } +} + +#endif + +#if ERTS_POLL_USE_TIMERFD + static ERTS_INLINE int -check_fd_events(ErtsPollSet ps, SysTimeval *tv, int max_res) +get_timeout_itimerspec(ErtsPollSet ps, + struct itimerspec *itsp, + ErtsMonotonicTime timeout_time) +{ + + itsp->it_interval.tv_sec = 0; + itsp->it_interval.tv_nsec = 0; + + return get_timeout_timespec(ps, &itsp->it_value, timeout_time); +} + +#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); +#if ERTS_POLL_USE_TIMERFD + { + struct itimerspec its; + timeout = get_timeout_itimerspec(ps, &its, timeout_time); + if (timeout) { +#ifdef ERTS_SMP + erts_thr_progress_prepare_wait(NULL); +#endif + timerfd_set(ps, &its); + res = epoll_wait(ps->kp_fd, ps->res_events, max_res, -1); + res = timerfd_clear(ps, res, max_res); + } else { + res = epoll_wait(ps->kp_fd, ps->res_events, max_res, 0); + } + } +#else /* !ERTS_POLL_USE_TIMERFD */ + 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); +#endif /* !ERTS_POLL_USE_TIMERFD */ #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 +2301,7 @@ 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 +2310,41 @@ 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; +#elif ERTS_POLL_USE_POLL && defined(HAVE_PPOLL) /* --- ppoll ---------------- */ + struct timespec ts; + timeout = get_timeout_timespec(ps, &ts, 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 = ppoll(ps->poll_fds, ps->no_poll_fds, &ts, NULL); +#elif ERTS_POLL_USE_POLL /* --- poll --------------------------------- */ + 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, 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 +2367,10 @@ 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 +2392,14 @@ 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 +2409,9 @@ 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) tv->tv_sec*1000 + tv->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 +2420,9 @@ 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 +2432,7 @@ 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 +2475,7 @@ 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 +2519,14 @@ 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 { @@ -2414,6 +2666,9 @@ ERTS_POLL_EXPORT(erts_poll_create_pollset)(void) #if ERTS_POLL_USE_WAKEUP_PIPE create_wakeup_pipe(ps); #endif +#if ERTS_POLL_USE_TIMERFD + create_timerfd(ps); +#endif #if ERTS_POLL_USE_FALLBACK if (kp_fd >= ps->fds_status_len) grow_fds_status(ps, kp_fd); @@ -2431,7 +2686,7 @@ 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); @@ -2504,6 +2759,10 @@ ERTS_POLL_EXPORT(erts_poll_destroy_pollset)(ErtsPollSet ps) if (ps->wake_fds[1] >= 0) close(ps->wake_fds[1]); #endif +#if ERTS_POLL_USE_TIMERFD + if (ps->timer_fd >= 0) + close(ps->timer_fd); +#endif erts_smp_spin_lock(&pollsets_lock); if (ps == pollsets) @@ -2608,6 +2867,9 @@ ERTS_POLL_EXPORT(erts_poll_info)(ErtsPollSet ps, ErtsPollInfo *pip) #if ERTS_POLL_USE_WAKEUP_PIPE pip->poll_set_size++; /* Wakeup pipe */ #endif +#if ERTS_POLL_USE_TIMERFD + pip->poll_set_size++; /* timerfd */ +#endif pip->fallback_poll_set_size = #if !ERTS_POLL_USE_FALLBACK @@ -2736,14 +2998,18 @@ ERTS_POLL_EXPORT(erts_poll_get_selected_events)(ErtsPollSet ps, ev[fd] = 0; else { ev[fd] = ps->fds_status[fd].events; + if ( #if ERTS_POLL_USE_WAKEUP_PIPE - if (fd == ps->wake_fds[0] || fd == ps->wake_fds[1]) - ev[fd] |= ERTS_POLL_EV_NVAL; + fd == ps->wake_fds[0] || fd == ps->wake_fds[1] || +#endif +#if ERTS_POLL_USE_TIMERFD + fd == ps->timer_fd || #endif #if ERTS_POLL_USE_KERNEL_POLL - if (fd == ps->kp_fd) - ev[fd] |= ERTS_POLL_EV_NVAL; + fd == ps->kp_fd || #endif + 0) + ev[fd] |= ERTS_POLL_EV_NVAL; } } ERTS_POLLSET_UNLOCK(ps); diff --git a/erts/emulator/sys/common/erl_poll.h b/erts/emulator/sys/common/erl_poll.h index 2f1c05f401..bd3a46ef0f 100644 --- a/erts/emulator/sys/common/erl_poll.h +++ b/erts/emulator/sys/common/erl_poll.h @@ -3,16 +3,17 @@ * * Copyright Ericsson AB 2006-2013. 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% */ @@ -29,6 +30,8 @@ #include "sys.h" +#define ERTS_POLL_NO_TIMEOUT ERTS_MONOTONIC_TIME_MIN + #if 0 #define ERTS_POLL_COUNT_AVOIDED_WAKEUPS #endif @@ -96,6 +99,8 @@ # endif #endif +#define ERTS_POLL_USE_TIMERFD 0 + typedef Uint32 ErtsPollEvents; #undef ERTS_POLL_EV_E2N @@ -128,8 +133,14 @@ struct erts_sys_fd_type { #include <sys/epoll.h> +#ifdef HAVE_SYS_TIMERFD_H +#include <sys/timerfd.h> +#undef ERTS_POLL_USE_TIMERFD +#define ERTS_POLL_USE_TIMERFD 1 +#endif + #define ERTS_POLL_EV_E2N(EV) \ - ((__uint32_t) (EV)) + ((uint32_t) (EV)) #define ERTS_POLL_EV_N2E(EV) \ ((ErtsPollEvents) (EV)) @@ -241,7 +252,7 @@ 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 +265,7 @@ 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 *); @@ -265,6 +276,6 @@ void ERTS_POLL_EXPORT(erts_poll_get_selected_events)(ErtsPollSet, ErtsPollEvents [], int); -int ERTS_POLL_EXPORT(erts_poll_get_table_len)(int); +int erts_poll_new_table_len(int old_len, int need_len); #endif /* #ifndef ERL_POLL_H__ */ diff --git a/erts/emulator/sys/common/erl_sys_common_misc.c b/erts/emulator/sys/common/erl_sys_common_misc.c index e3ba741058..e292741bfa 100644 --- a/erts/emulator/sys/common/erl_sys_common_misc.c +++ b/erts/emulator/sys/common/erl_sys_common_misc.c @@ -3,16 +3,17 @@ * * Copyright Ericsson AB 2006-2013. 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% */ @@ -44,6 +45,14 @@ #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/common/erl_util_queue.h b/erts/emulator/sys/common/erl_util_queue.h index 47925e2264..b50e062dd5 100644 --- a/erts/emulator/sys/common/erl_util_queue.h +++ b/erts/emulator/sys/common/erl_util_queue.h @@ -3,16 +3,17 @@ * * Copyright Ericsson AB 2013. 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/. + * 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 * - * 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. + * 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% */ |