diff options
Diffstat (limited to 'erts/emulator/sys/win32/erl_poll.c')
| -rw-r--r-- | erts/emulator/sys/win32/erl_poll.c | 60 |
1 files changed, 45 insertions, 15 deletions
diff --git a/erts/emulator/sys/win32/erl_poll.c b/erts/emulator/sys/win32/erl_poll.c index 972170d465..5a62b00a68 100644 --- a/erts/emulator/sys/win32/erl_poll.c +++ b/erts/emulator/sys/win32/erl_poll.c @@ -285,7 +285,7 @@ struct ErtsPollSet_ { #ifdef ERTS_SMP erts_smp_mtx_t mtx; #endif - erts_smp_atomic32_t timeout; + erts_atomic64_t timeout_time; }; #ifdef ERTS_SMP @@ -363,6 +363,26 @@ do { \ wait_standby(PS); \ } while(0) +static ERTS_INLINE void +init_timeout_time(ErtsPollSet ps) +{ + erts_atomic64_init_nob(&ps->timeout_time, + (erts_aint64_t) ERTS_MONOTONIC_TIME_MAX); +} + +static ERTS_INLINE void +set_timeout_time(ErtsPollSet ps, ErtsMonotonicTime time) +{ + erts_atomic64_set_relb(&ps->timeout_time, + (erts_aint64_t) time); +} + +static ERTS_INLINE ErtsMonotonicTime +get_timeout_time(ErtsPollSet ps) +{ + return (ErtsMonotonicTime) erts_atomic64_read_acqb(&ps->timeout_time); +} + #define ERTS_POLL_NOT_WOKEN ((erts_aint32_t) 0) #define ERTS_POLL_WOKEN_IO_READY ((erts_aint32_t) 1) #define ERTS_POLL_WOKEN_INTR ((erts_aint32_t) 2) @@ -422,15 +442,29 @@ wakeup_cause(ErtsPollSet ps) } static ERTS_INLINE DWORD -poll_wait_timeout(ErtsPollSet ps, SysTimeval *tvp) +poll_wait_timeout(ErtsPollSet ps, ErtsMonotonicTime timeout_time) { - time_t timeout = tvp->tv_sec * 1000 + tvp->tv_usec / 1000; + ErtsMonotonicTime current_time, diff_time, timeout; - if (timeout <= 0) { + if (timeout_time == ERTS_POLL_NO_TIMEOUT) { + no_timeout: + set_timeout_time(ps, ERTS_MONOTONIC_TIME_MIN); woke_up(ps); return (DWORD) 0; } + current_time = erts_get_monotonic_time(); + diff_time = timeout_time - current_time; + if (diff_time <= 0) + goto no_timeout; + + /* Round up to nearest milli second */ + timeout = (ERTS_MONOTONIC_TO_MSEC(diff_time - 1) + 1); + if (timeout > INT_MAX) + timeout = INT_MAX; /* Also prevents DWORD overflow */ + + set_timeout_time(ps, current_time + ERTS_MSEC_TO_MONOTONIC(timeout)); + ResetEvent(ps->event_io_ready); /* * Since we don't know the internals of ResetEvent() we issue @@ -442,10 +476,6 @@ poll_wait_timeout(ErtsPollSet ps, SysTimeval *tvp) if (erts_atomic32_read_nob(&ps->wakeup_state) != ERTS_POLL_NOT_WOKEN) return (DWORD) 0; - if (timeout > ((time_t) ERTS_AINT32_T_MAX)) - timeout = ERTS_AINT32_T_MAX; /* Also prevents DWORD overflow */ - - erts_smp_atomic32_set_relb(&ps->timeout, (erts_aint32_t) timeout); return (DWORD) timeout; } @@ -1012,12 +1042,12 @@ void erts_poll_interrupt(ErtsPollSet ps, int set /* bool */) void erts_poll_interrupt_timed(ErtsPollSet ps, int set /* bool */, - erts_short_time_t msec) + ErtsMonotonicTime timeout_time) { - HARDTRACEF(("In erts_poll_interrupt_timed(%d,%ld)",set,msec)); + HARDTRACEF(("In erts_poll_interrupt_timed(%d,%ld)",set,timeout_time)); if (!set) reset_interrupt(ps); - else if (erts_smp_atomic32_read_acqb(&ps->timeout) > (erts_aint32_t) msec) + else if (get_timeout_time(ps) > timeout_time) set_interrupt(ps); HARDTRACEF(("Out erts_poll_interrupt_timed")); } @@ -1092,7 +1122,7 @@ void erts_poll_controlv(ErtsPollSet ps, int erts_poll_wait(ErtsPollSet ps, ErtsPollResFd pr[], int *len, - SysTimeval *tvp) + ErtsMonotonicTime timeout_time) { int no_fds; DWORD timeout; @@ -1149,7 +1179,7 @@ int erts_poll_wait(ErtsPollSet ps, no_fds = ERTS_POLL_MAX_RES; #endif - timeout = poll_wait_timeout(ps, tvp); + timeout = poll_wait_timeout(ps, timeout_time); /*HARDDEBUGF(("timeout = %ld",(long) timeout));*/ @@ -1242,7 +1272,7 @@ int erts_poll_wait(ErtsPollSet ps, erts_mtx_unlock(&w->mtx); } done: - erts_smp_atomic32_set_nob(&ps->timeout, ERTS_AINT32_T_MAX); + set_timeout_time(ps, ERTS_MONOTONIC_TIME_MAX); *len = num; ERTS_POLLSET_UNLOCK(ps); HARDTRACEF(("Out erts_poll_wait")); @@ -1326,7 +1356,7 @@ ErtsPollSet erts_poll_create_pollset(void) #ifdef ERTS_SMP erts_smp_mtx_init(&ps->mtx, "pollset"); #endif - erts_smp_atomic32_init_nob(&ps->timeout, ERTS_AINT32_T_MAX); + init_timeout_time(ps); HARDTRACEF(("Out erts_poll_create_pollset")); return ps; |