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Diffstat (limited to 'erts/emulator/sys/common/erl_poll.c')
-rw-r--r--erts/emulator/sys/common/erl_poll.c129
1 files changed, 118 insertions, 11 deletions
diff --git a/erts/emulator/sys/common/erl_poll.c b/erts/emulator/sys/common/erl_poll.c
index a523d67158..556e8d05ad 100644
--- a/erts/emulator/sys/common/erl_poll.c
+++ b/erts/emulator/sys/common/erl_poll.c
@@ -40,6 +40,10 @@
# include "config.h"
#endif
+#if defined(__DARWIN__) || defined(__APPLE__) && defined(__MACH__)
+# define _DARWIN_UNLIMITED_SELECT
+#endif
+
#ifndef WANT_NONBLOCKING
# define WANT_NONBLOCKING
#endif
@@ -90,6 +94,19 @@
#define HARD_DEBUG
#endif
+#ifdef _DARWIN_UNLIMITED_SELECT
+# define FDS fd_set *
+# define FDS_CLR FD_CLR
+# define FDS_ISSET FD_ISSET
+# define FDS_SET FD_SET
+# define FDS_SIZE(n) ((((n)+NFDBITS-1)/NFDBITS)*sizeof(fd_mask))
+#else
+# define FDS fd_set
+# define FDS_CLR(fd, fds) FD_CLR((fd), &(fds))
+# define FDS_ISSET(fd, fds) FD_ISSET((fd), &(fds))
+# define FDS_SET(fd, fds) FD_SET((fd), &(fds))
+#endif
+
#define ERTS_POLL_USE_BATCH_UPDATE_POLLSET (ERTS_POLL_USE_DEVPOLL \
|| ERTS_POLL_USE_KQUEUE)
#define ERTS_POLL_USE_UPDATE_REQUESTS_QUEUE \
@@ -244,10 +261,14 @@ struct ErtsPollSet_ {
#if ERTS_POLL_USE_FALLBACK
int no_select_fds;
#endif
- fd_set input_fds;
- fd_set res_input_fds;
- fd_set output_fds;
- fd_set res_output_fds;
+#ifdef _DARWIN_UNLIMITED_SELECT
+ size_t select_fds_len;
+ char resize_res_sets;
+#endif
+ FDS input_fds;
+ FDS res_input_fds;
+ FDS output_fds;
+ FDS res_output_fds;
#endif
#if ERTS_POLL_USE_UPDATE_REQUESTS_QUEUE
ErtsPollSetUpdateRequestsBlock update_requests;
@@ -624,6 +645,29 @@ grow_poll_fds(ErtsPollSet ps, int min_ix)
}
#endif
+#ifdef _DARWIN_UNLIMITED_SELECT
+static void
+grow_select_fds(ErtsPollSet ps, int fd)
+{
+ int new_len = ERTS_POLL_EXPORT(erts_poll_get_table_len)(fd + 1);
+ if (new_len > max_fds)
+ new_len = max_fds;
+ new_len = FDS_SIZE(new_len);
+ ps->input_fds = ps->select_fds_len
+ ? erts_realloc(ERTS_ALC_T_SELECT_FDS, ps->input_fds, new_len)
+ : erts_alloc(ERTS_ALC_T_SELECT_FDS, new_len);
+ ps->output_fds = ps->select_fds_len
+ ? erts_realloc(ERTS_ALC_T_SELECT_FDS, ps->output_fds, new_len)
+ : erts_alloc(ERTS_ALC_T_SELECT_FDS, new_len);
+ memset((void *) ps->input_fds + ps->select_fds_len, 0,
+ new_len - ps->select_fds_len);
+ memset((void *) ps->output_fds + ps->select_fds_len, 0,
+ new_len - ps->select_fds_len);
+ ps->select_fds_len = new_len;
+ ps->resize_res_sets = 1;
+}
+#endif /* _DARWIN_UNLIMITED_SELECT */
+
static void
grow_fds_status(ErtsPollSet ps, int min_fd)
{
@@ -1290,22 +1334,26 @@ static int update_pollset(ErtsPollSet ps, int fd)
#elif ERTS_POLL_USE_SELECT /* --- select ------------------------------ */
{
ErtsPollEvents events = ps->fds_status[fd].events;
+#ifdef _DARWIN_UNLIMITED_SELECT
+ if (FDS_SIZE(fd) > ps->select_fds_len)
+ grow_select_fds(ps, fd);
+#endif
if ((ERTS_POLL_EV_IN & events)
!= (ERTS_POLL_EV_IN & ps->fds_status[fd].used_events)) {
if (ERTS_POLL_EV_IN & events) {
- FD_SET(fd, &ps->input_fds);
+ FDS_SET(fd, ps->input_fds);
}
else {
- FD_CLR(fd, &ps->input_fds);
+ FDS_CLR(fd, ps->input_fds);
}
}
if ((ERTS_POLL_EV_OUT & events)
!= (ERTS_POLL_EV_OUT & ps->fds_status[fd].used_events)) {
if (ERTS_POLL_EV_OUT & events) {
- FD_SET(fd, &ps->output_fds);
+ FDS_SET(fd, ps->output_fds);
}
else {
- FD_CLR(fd, &ps->output_fds);
+ FDS_CLR(fd, ps->output_fds);
}
}
@@ -1789,7 +1837,7 @@ save_poll_result(ErtsPollSet ps, ErtsPollResFd pr[], int max_res,
while (fd < end_fd && res < max_res) {
pr[res].events = (ErtsPollEvents) 0;
- if (FD_ISSET(fd, &ps->res_input_fds)) {
+ if (FDS_ISSET(fd, ps->res_input_fds)) {
#if ERTS_POLL_USE_FALLBACK
if (fd == ps->kp_fd) {
res += get_kp_results(ps, &pr[res], max_res-res);
@@ -1805,7 +1853,7 @@ save_poll_result(ErtsPollSet ps, ErtsPollResFd pr[], int max_res,
#endif
pr[res].events |= ERTS_POLL_EV_IN;
}
- if (FD_ISSET(fd, &ps->res_output_fds))
+ if (FDS_ISSET(fd, ps->res_output_fds))
pr[res].events |= ERTS_POLL_EV_OUT;
if (pr[res].events) {
pr[res].fd = fd;
@@ -1835,13 +1883,23 @@ save_poll_result(ErtsPollSet ps, ErtsPollResFd pr[], int max_res,
fd_set *iset = NULL;
fd_set *oset = NULL;
if (ps->fds_status[fd].events & ERTS_POLL_EV_IN) {
+#ifdef _DARWIN_UNLIMITED_SELECT
+ iset = ps->res_input_fds;
+ memset((void *) iset, 0, ps->select_fds_len);
+#else
iset = &ps->res_input_fds;
FD_ZERO(iset);
+#endif
FD_SET(fd, iset);
}
if (ps->fds_status[fd].events & ERTS_POLL_EV_OUT) {
+#ifdef _DARWIN_UNLIMITED_SELECT
+ oset = ps->res_output_fds;
+ memset((char *)oset, 0, ps->select_fds_len);
+#else
oset = &ps->res_output_fds;
FD_ZERO(oset);
+#endif
FD_SET(fd, oset);
}
@@ -1992,16 +2050,37 @@ check_fd_events(ErtsPollSet ps, SysTimeval *tv, int max_res)
#elif ERTS_POLL_USE_SELECT /* --- select ------------------------------ */
SysTimeval to = *tv;
+#ifdef _DARWIN_UNLIMITED_SELECT
+ if (ps->resize_res_sets) {
+ ps->res_input_fds = ps->res_input_fds
+ ? erts_realloc(ERTS_ALC_T_SELECT_FDS, ps->res_input_fds,
+ ps->select_fds_len)
+ : erts_alloc(ERTS_ALC_T_SELECT_FDS, ps->select_fds_len);
+ ps->res_output_fds = ps->res_output_fds
+ ? erts_realloc(ERTS_ALC_T_SELECT_FDS, ps->res_output_fds,
+ ps->select_fds_len)
+ : erts_alloc(ERTS_ALC_T_SELECT_FDS, ps->select_fds_len);
+ ps->resize_res_sets = 0;
+ }
+ memcpy(ps->res_input_fds, ps->input_fds, ps->select_fds_len);
+ memcpy(ps->res_output_fds, ps->output_fds, ps->select_fds_len);
+#else
ps->res_input_fds = ps->input_fds;
ps->res_output_fds = ps->output_fds;
+#endif
#ifdef ERTS_SMP
if (to.tv_sec || to.tv_usec)
erts_thr_progress_prepare_wait(NULL);
#endif
res = select(ps->max_fd + 1,
+#ifdef _DARWIN_UNLIMITED_SELECT
+ ps->res_input_fds,
+ ps->res_output_fds,
+#else
&ps->res_input_fds,
&ps->res_output_fds,
+#endif
NULL,
&to);
#ifdef ERTS_SMP
@@ -2028,8 +2107,13 @@ check_fd_events(ErtsPollSet ps, SysTimeval *tv, int max_res)
handle_update_requests(ps);
ERTS_POLLSET_UNLOCK(ps);
res = select(ps->max_fd + 1,
+#ifdef _DARWIN_UNLIMITED_SELECT
+ ps->res_input_fds,
+ ps->res_output_fds,
+#else
&ps->res_input_fds,
&ps->res_output_fds,
+#endif
NULL,
&to);
if (res == 0) {
@@ -2233,7 +2317,8 @@ ERTS_POLL_EXPORT(erts_poll_init)(void)
max_fds = OPEN_MAX;
#endif
-#if ERTS_POLL_USE_SELECT && defined(FD_SETSIZE)
+#if ERTS_POLL_USE_SELECT && defined(FD_SETSIZE) && \
+ !defined(_DARWIN_UNLIMITED_SELECT)
if (max_fds > FD_SETSIZE)
max_fds = FD_SETSIZE;
#endif
@@ -2301,11 +2386,20 @@ ERTS_POLL_EXPORT(erts_poll_create_pollset)(void)
#if ERTS_POLL_USE_FALLBACK
ps->no_select_fds = 0;
#endif
+#ifdef _DARWIN_UNLIMITED_SELECT
+ ps->select_fds_len = 0;
+ ps->resize_res_sets = 0;
+ ps->input_fds = NULL;
+ ps->res_input_fds = NULL;
+ ps->output_fds = NULL;
+ ps->res_output_fds = NULL;
+#else
FD_ZERO(&ps->input_fds);
FD_ZERO(&ps->res_input_fds);
FD_ZERO(&ps->output_fds);
FD_ZERO(&ps->res_output_fds);
#endif
+#endif
#if ERTS_POLL_USE_UPDATE_REQUESTS_QUEUE
ps->update_requests.next = NULL;
ps->update_requests.len = 0;
@@ -2382,6 +2476,16 @@ ERTS_POLL_EXPORT(erts_poll_destroy_pollset)(ErtsPollSet ps)
if (ps->poll_fds)
erts_free(ERTS_ALC_T_POLL_FDS, (void *) ps->poll_fds);
#elif ERTS_POLL_USE_SELECT
+#ifdef _DARWIN_UNLIMITED_SELECT
+ if (ps->input_fds)
+ erts_free(ERTS_ALC_T_SELECT_FDS, (void *) ps->input_fds);
+ if (ps->res_input_fds)
+ erts_free(ERTS_ALC_T_SELECT_FDS, (void *) ps->res_input_fds);
+ if (ps->output_fds)
+ erts_free(ERTS_ALC_T_SELECT_FDS, (void *) ps->output_fds);
+ if (ps->res_output_fds)
+ erts_free(ERTS_ALC_T_SELECT_FDS, (void *) ps->res_output_fds);
+#endif
#endif
#if ERTS_POLL_USE_UPDATE_REQUESTS_QUEUE
{
@@ -2445,6 +2549,9 @@ ERTS_POLL_EXPORT(erts_poll_info)(ErtsPollSet ps, ErtsPollInfo *pip)
#if ERTS_POLL_USE_POLL
size += ps->poll_fds_len*sizeof(struct pollfd);
#elif ERTS_POLL_USE_SELECT
+#ifdef _DARWIN_UNLIMITED_SELECT
+ size += ps->select_fds_len*4;
+#endif
#endif
#if ERTS_POLL_USE_UPDATE_REQUESTS_QUEUE
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-27 03:47:08 +0000