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Diffstat (limited to 'src/event/modules/ngx_sigio_module.c')
-rw-r--r--src/event/modules/ngx_sigio_module.c379
1 files changed, 0 insertions, 379 deletions
diff --git a/src/event/modules/ngx_sigio_module.c b/src/event/modules/ngx_sigio_module.c
deleted file mode 100644
index 7e4bee33f..000000000
--- a/src/event/modules/ngx_sigio_module.c
+++ /dev/null
@@ -1,379 +0,0 @@
-
-/*
- * Copyright (C) 2002-2004 Igor Sysoev, http://sysoev.ru/en/
- */
-
-
-#include <ngx_config.h>
-#include <ngx_core.h>
-#include <ngx_event.h>
-
-
-#if (TEST_BUILD_SIGIO)
-
-#define F_SETSIG 10
-
-#define POLL_IN POLLIN
-#define POLL_OUT POLLOUT
-
-#endif
-
-
-typedef struct {
- int signo;
-} ngx_sigio_conf_t;
-
-
-static int ngx_sigio_init(ngx_cycle_t *cycle);
-static void ngx_sigio_done(ngx_cycle_t *cycle);
-static int ngx_sigio_add_event(ngx_event_t *ev, int event, u_int flags);
-static int ngx_sigio_del_event(ngx_event_t *ev, int event, u_int flags);
-static int ngx_sigio_add_connection(ngx_connection_t *c);
-static int ngx_sigio_del_connection(ngx_connection_t *c);
-static int ngx_sigio_process_events(ngx_log_t *log);
-
-static void *ngx_sigio_create_conf(ngx_cycle_t *cycle);
-static char *ngx_sigio_init_conf(ngx_cycle_t *cycle, void *conf);
-
-
-static sigset_t set;
-
-
-static ngx_str_t sigio_name = ngx_string("sigio");
-
-static ngx_command_t ngx_sigio_commands[] = {
-
- {ngx_string("sigio_signal"),
- NGX_EVENT_CONF|NGX_CONF_TAKE1,
- ngx_conf_set_num_slot,
- 0,
- offsetof(ngx_sigio_conf_t, signo),
- NULL},
-
- ngx_null_command
-};
-
-
-ngx_event_module_t ngx_sigio_module_ctx = {
- &sigio_name,
- ngx_sigio_create_conf, /* create configuration */
- ngx_sigio_init_conf, /* init configuration */
-
- {
- ngx_sigio_add_event, /* add an event */
- ngx_sigio_del_event, /* delete an event */
- ngx_sigio_add_event, /* enable an event */
- ngx_sigio_del_event, /* disable an event */
- ngx_sigio_add_connection, /* add an connection */
- ngx_sigio_del_connection, /* delete an connection */
- ngx_sigio_process_events, /* process the events */
- ngx_sigio_init, /* init the events */
- ngx_sigio_done, /* done the events */
- }
-
-};
-
-ngx_module_t ngx_sigio_module = {
- NGX_MODULE,
- &ngx_sigio_module_ctx, /* module context */
- ngx_sigio_commands, /* module directives */
- NGX_EVENT_MODULE, /* module type */
- NULL, /* init module */
- NULL /* init child */
-};
-
-
-static int ngx_sigio_init(ngx_cycle_t *cycle)
-{
- ngx_sigio_conf_t *sgcf;
-
- sgcf = ngx_event_get_conf(cycle->conf_ctx, ngx_sigio_module);
-
- sigemptyset(&set);
- sigaddset(&set, sgcf->signo);
- sigaddset(&set, SIGIO);
-
- if (sigprocmask(SIG_BLOCK, &set, NULL) == -1) {
- ngx_log_error(NGX_LOG_EMERG, cycle->log, ngx_errno,
- "sigprocmask() failed");
- return NGX_ERROR;
- }
-
- ngx_io = ngx_os_io;
-
- ngx_event_actions = ngx_sigio_module_ctx.actions;
-
- ngx_event_flags = NGX_USE_SIGIO_EVENT;
-
- return NGX_OK;
-}
-
-
-static void ngx_sigio_done(ngx_cycle_t *cycle)
-{
-}
-
-
-static int ngx_sigio_add_event(ngx_event_t *ev, int event, u_int flags)
-{
- ngx_connection_t *c;
-
- c = ev->data;
-
- ngx_log_debug2(NGX_LOG_DEBUG_EVENT, c->log, 0,
- "sigio add event: fd:%d ev:%04X", c->fd, event);
-
- return NGX_OK;
-}
-
-
-static int ngx_sigio_del_event(ngx_event_t *ev, int event, u_int flags)
-{
- ngx_connection_t *c;
-
- c = ev->data;
-
- ngx_log_debug2(NGX_LOG_DEBUG_EVENT, c->log, 0,
- "sigio del event: fd:%d ev:%04X", c->fd, event);
-
- return NGX_OK;
-}
-
-
-static int ngx_sigio_add_connection(ngx_connection_t *c)
-{
- ngx_sigio_conf_t *sgcf;
-
- sgcf = ngx_event_get_conf(ngx_cycle->conf_ctx, ngx_sigio_module);
-
- ngx_log_debug2(NGX_LOG_DEBUG_EVENT, c->log, 0,
- "sigio add connection: fd:%d signo:%d", c->fd, sgcf->signo);
-
- if (fcntl(c->fd, F_SETFL, O_RDWR|O_NONBLOCK|O_ASYNC) == -1) {
- ngx_log_error(NGX_LOG_ALERT, c->log, ngx_errno,
- "fcntl(O_RDWR|O_NONBLOCK|O_ASYNC) failed");
- return NGX_ERROR;
- }
-
- if (fcntl(c->fd, F_SETSIG, sgcf->signo) == -1) {
- ngx_log_error(NGX_LOG_ALERT, c->log, ngx_errno,
- "fcntl(F_SETSIG) failed");
- return NGX_ERROR;
- }
-
- if (fcntl(c->fd, F_SETOWN, ngx_getpid()) == -1) {
- ngx_log_error(NGX_LOG_ALERT, c->log, ngx_errno,
- "fcntl(F_SETOWN) failed");
- return NGX_ERROR;
- }
-
-#if (HAVE_ONESIGFD)
- if (fcntl(c->fd, F_SETAUXFL, O_ONESIGFD) == -1) {
- ngx_log_error(NGX_LOG_ALERT, c->log, ngx_errno,
- "fcntl(F_SETAUXFL) failed");
- return NGX_ERROR;
- }
-#endif
-
- c->read->active = 1;
- c->write->active = 1;
-
- return NGX_OK;
-}
-
-
-static int ngx_sigio_del_connection(ngx_connection_t *c)
-{
- c->read->active = 0;
- c->write->active = 0;
-
- return NGX_OK;
-}
-
-
-int ngx_sigio_process_events(ngx_log_t *log)
-{
- int signo;
- ngx_int_t instance, i;
- size_t n;
- ngx_msec_t timer;
- ngx_err_t err;
- ngx_cycle_t **cycle;
- siginfo_t si;
- struct timeval tv;
- struct timespec ts;
- struct sigaction sa;
- ngx_connection_t *c;
- ngx_epoch_msec_t delta;
- ngx_sigio_conf_t *sgcf;
-
- timer = ngx_event_find_timer();
- ngx_old_elapsed_msec = ngx_elapsed_msec;
-
- if (timer) {
- ts.tv_sec = timer / 1000;
- ts.tv_nsec = (timer % 1000) * 1000000;
- }
-
- ngx_log_debug1(NGX_LOG_DEBUG_EVENT, log, 0, "sigio timer: %d", timer);
-
- if (timer) {
- signo = sigtimedwait(&set, &si, &ts);
- } else {
- signo = sigwaitinfo(&set, &si);
- }
-
- if (signo == -1) {
- err = ngx_errno;
- } else {
- err = 0;
- }
-
- ngx_gettimeofday(&tv);
- ngx_time_update(tv.tv_sec);
-
- delta = ngx_elapsed_msec;
- ngx_elapsed_msec = tv.tv_sec * 1000 + tv.tv_usec / 1000 - ngx_start_msec;
-
- if (err == -1) {
- ngx_log_error(NGX_LOG_ALERT, c->log, err,
- timer ? "sigtimedwait() failed" : "sigwaitinfo() failed");
- return NGX_ERROR;
- }
-
- if (timer) {
- delta = ngx_elapsed_msec - delta;
-
- ngx_log_debug2(NGX_LOG_DEBUG_EVENT, log, 0,
- "sigio timer: %d, delta: %d", timer, (int) delta);
- }
-
- sgcf = ngx_event_get_conf(ngx_cycle->conf_ctx, ngx_sigio_module);
-
- if (signo == sgcf->signo) {
-
- /* STUB: old_cycles */
- c = &ngx_cycle->connections[si.si_fd];
-
- if (si.si_band & POLL_IN) {
- if (!c->read->active) {
- continue;
- }
-
- c->read->ready = 1;
- c->read->event_handler(c->read);
- }
-
- if (si.si_band & POLL_OUT) {
- if (!c->read->active) {
- continue;
- }
-
- c->read->ready = 1;
- c->read->event_handler(c->read);
- }
-
- } else if (signo == SIGIO) {
- ngx_log_error(NGX_LOG_ALERT, log, ngx_errno,
- "signal queue overflowed: "
- "SIGIO, fd:%d, band:%d", si.si_fd, si.si_band);
-
- ngx_memzero(&sa, sizeof(struct sigaction));
- sa.sa_sigaction = SIG_DFL;
- sigemptyset(&sa.sa_mask);
- if (sigaction(sgcf->signo, &sa, NULL) == -1) {
- ngx_log_error(NGX_LOG_ALERT, log, ngx_errno,
- "sigaction queue overflowed: "
- "SIGIO, fd:%d, band:%d", si.si_fd, si.si_band);
- }
-
- } else {
- ngx_log_error(NGX_LOG_ALERT, log, 0,
- timer ? "sigtimedwait() returned unexpected signal: %d":
- "sigwaitinfo() returned unexpected signal: %d",
- signo);
- return NGX_ERROR;
- }
- }
-
-
-
-
-
-
- for (i = 0; i < events; i++) {
- c = event_list[i].data.ptr;
-
- instance = (uintptr_t) c & 1;
- c = (ngx_connection_t *) ((uintptr_t) c & (uintptr_t) ~1);
-
- ngx_log_debug3(NGX_LOG_DEBUG_EVENT, log, 0,
- "sigio: fd:%d ev:%04X d:" PTR_FMT,
- c->fd, event_list[i].events, event_list[i].data);
-
- if (c->read->instance != instance) {
-
- /*
- * it's a stale event from a file descriptor
- * that was just closed in this iteration
- */
-
- ngx_log_debug1(NGX_LOG_DEBUG_EVENT, log, 0,
- "sigio: stale event " PTR_FMT, c);
- continue;
- }
-
- if (event_list[i].events & EPOLLOUT) {
- if (!c->write->active) {
- continue;
- }
-
- c->write->ready = 1;
- c->write->event_handler(c->write);
- }
-
- if (event_list[i].events & (EPOLLERR|EPOLLHUP)) {
- ngx_log_error(NGX_LOG_ALERT, log, 0,
- "sigio_wait() error on fd:%d ev:%d",
- c->fd, event_list[i].events);
- continue;
- }
-
- if (event_list[i].events & ~(EPOLLIN|EPOLLOUT)) {
- ngx_log_error(NGX_LOG_ALERT, log, 0,
- "sigio_wait() returned strange events on fd:%d ev:%d",
- c->fd, event_list[i].events);
- }
-
- }
-
- if (timer != (ngx_msec_t) -1 && delta) {
- ngx_event_expire_timers((ngx_msec_t) delta);
- }
-
- return NGX_OK;
-}
-
-
-static void *ngx_sigio_create_conf(ngx_cycle_t *cycle)
-{
- ngx_sigio_conf_t *sgcf;
-
- ngx_test_null(sgcf, ngx_palloc(cycle->pool, sizeof(ngx_sigio_conf_t)),
- NGX_CONF_ERROR);
-
- sgcf->events = NGX_CONF_UNSET;
-
- return epcf;
-}
-
-
-static char *ngx_sigio_init_conf(ngx_cycle_t *cycle, void *conf)
-{
- ngx_sigio_conf_t *sgcf = conf;
-
- /* LinuxThreads uses the first 3 RT signals */
- ngx_conf_init_unsigned_value(sgcf->signo, SIGRTMIN + 10);
-
- return NGX_CONF_OK;
-}
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