diff options
Diffstat (limited to 'erts/emulator/sys/common')
| -rw-r--r-- | erts/emulator/sys/common/erl_check_io.c | 5 | ||||
| -rw-r--r-- | erts/emulator/sys/common/erl_poll.c | 55 | ||||
| -rw-r--r-- | erts/emulator/sys/common/erl_poll.h | 2 |
3 files changed, 38 insertions, 24 deletions
diff --git a/erts/emulator/sys/common/erl_check_io.c b/erts/emulator/sys/common/erl_check_io.c index c1336c60d9..ce014c19c2 100644 --- a/erts/emulator/sys/common/erl_check_io.c +++ b/erts/emulator/sys/common/erl_check_io.c @@ -39,7 +39,6 @@ #include "dtrace-wrapper.h" #ifdef ERTS_SYS_CONTINOUS_FD_NUMBERS -# define ERTS_DRV_EV_STATE_EXTRA_SIZE 128 #else # include "safe_hash.h" # define DRV_EV_STATE_HTAB_SIZE 1024 @@ -334,7 +333,9 @@ static void grow_drv_ev_state(int min_ix) { int i; - int new_len = min_ix + 1 + ERTS_DRV_EV_STATE_EXTRA_SIZE; + 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; diff --git a/erts/emulator/sys/common/erl_poll.c b/erts/emulator/sys/common/erl_poll.c index 50a888323a..a523d67158 100644 --- a/erts/emulator/sys/common/erl_poll.c +++ b/erts/emulator/sys/common/erl_poll.c @@ -55,17 +55,12 @@ # ifdef SYS_SELECT_H # include <sys/select.h> # endif -# ifdef VXWORKS -# include <selectLib.h> -# endif #endif -#ifndef VXWORKS -# ifdef NO_SYSCONF -# if ERTS_POLL_USE_SELECT -# include <sys/param.h> -# else -# include <limits.h> -# endif +#ifdef NO_SYSCONF +# if ERTS_POLL_USE_SELECT +# include <sys/param.h> +# else +# include <limits.h> # endif #endif #include "erl_thr_progress.h" @@ -105,8 +100,8 @@ #define ERTS_POLL_COALESCE_KP_RES (ERTS_POLL_USE_KQUEUE || ERTS_POLL_USE_EPOLL) -#define FDS_STATUS_EXTRA_FREE_SIZE 128 -#define POLL_FDS_EXTRA_FREE_SIZE 128 +#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 @@ -563,6 +558,28 @@ free_update_requests_block(ErtsPollSet ps, * --- Growing poll set structures ------------------------------------------- */ +int +ERTS_POLL_EXPORT(erts_poll_get_table_len) (int new_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; + } + return new_len; +} + + #if ERTS_POLL_USE_KERNEL_POLL static void grow_res_events(ErtsPollSet ps, int new_len) @@ -575,7 +592,7 @@ grow_res_events(ErtsPollSet ps, int new_len) #elif ERTS_POLL_USE_KQUEUE struct kevent #endif - )*new_len; + ) * ERTS_POLL_EXPORT(erts_poll_get_table_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); @@ -589,7 +606,7 @@ static void grow_poll_fds(ErtsPollSet ps, int min_ix) { int i; - int new_len = min_ix + 1 + POLL_FDS_EXTRA_FREE_SIZE; + int new_len = ERTS_POLL_EXPORT(erts_poll_get_table_len)(min_ix + 1); if (new_len > max_fds) new_len = max_fds; ps->poll_fds = (ps->poll_fds_len @@ -611,7 +628,7 @@ static void grow_fds_status(ErtsPollSet ps, int min_fd) { int i; - int new_len = min_fd + 1 + FDS_STATUS_EXTRA_FREE_SIZE; + int new_len = ERTS_POLL_EXPORT(erts_poll_get_table_len)(min_fd + 1); ASSERT(min_fd < max_fds); if (new_len > max_fds) new_len = max_fds; @@ -2200,10 +2217,6 @@ ERTS_POLL_EXPORT(erts_poll_max_fds)(void) * --- Initialization -------------------------------------------------------- */ -#ifdef VXWORKS -extern int erts_vxworks_max_files; -#endif - void ERTS_POLL_EXPORT(erts_poll_init)(void) { @@ -2212,9 +2225,7 @@ ERTS_POLL_EXPORT(erts_poll_init)(void) errno = 0; -#if defined(VXWORKS) - max_fds = erts_vxworks_max_files; -#elif !defined(NO_SYSCONF) +#if !defined(NO_SYSCONF) max_fds = sysconf(_SC_OPEN_MAX); #elif ERTS_POLL_USE_SELECT max_fds = NOFILE; diff --git a/erts/emulator/sys/common/erl_poll.h b/erts/emulator/sys/common/erl_poll.h index 8dde619105..502290e4bb 100644 --- a/erts/emulator/sys/common/erl_poll.h +++ b/erts/emulator/sys/common/erl_poll.h @@ -246,4 +246,6 @@ void ERTS_POLL_EXPORT(erts_poll_get_selected_events)(ErtsPollSet, ErtsPollEvents [], int); +int ERTS_POLL_EXPORT(erts_poll_get_table_len)(int); + #endif /* #ifndef ERL_POLL_H__ */ |