nginx-0.0.2-2004-02-17-20:53:12 import
diff --git a/src/event/modules/ngx_rtsig_module.c b/src/event/modules/ngx_rtsig_module.c
new file mode 100644
index 0000000..5c1536f
--- /dev/null
+++ b/src/event/modules/ngx_rtsig_module.c
@@ -0,0 +1,315 @@
+
+/*
+ * 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_RTSIG)
+
+#define F_SETSIG 10
+#define SIGRTMIN 33
+#define si_fd __spare__[0]
+
+int sigwaitinfo(const sigset_t *set, siginfo_t *info);
+
+int sigtimedwait(const sigset_t *set, siginfo_t *info,
+ const struct timespec *timeout);
+
+int sigwaitinfo(const sigset_t *set, siginfo_t *info)
+{
+ return -1;
+}
+
+int sigtimedwait(const sigset_t *set, siginfo_t *info,
+ const struct timespec *timeout)
+{
+ return -1;
+}
+
+#endif
+
+
+typedef struct {
+ int signo;
+} ngx_rtsig_conf_t;
+
+
+static int ngx_rtsig_init(ngx_cycle_t *cycle);
+static void ngx_rtsig_done(ngx_cycle_t *cycle);
+static int ngx_rtsig_add_connection(ngx_connection_t *c);
+static int ngx_rtsig_del_connection(ngx_connection_t *c);
+static int ngx_rtsig_process_events(ngx_log_t *log);
+
+static void *ngx_rtsig_create_conf(ngx_cycle_t *cycle);
+static char *ngx_rtsig_init_conf(ngx_cycle_t *cycle, void *conf);
+
+
+static sigset_t set;
+
+
+static ngx_str_t rtsig_name = ngx_string("rtsig");
+
+static ngx_command_t ngx_rtsig_commands[] = {
+
+ {ngx_string("rtsig_signo"),
+ NGX_EVENT_CONF|NGX_CONF_TAKE1,
+ ngx_conf_set_num_slot,
+ 0,
+ offsetof(ngx_rtsig_conf_t, signo),
+ NULL},
+
+ ngx_null_command
+};
+
+
+ngx_event_module_t ngx_rtsig_module_ctx = {
+ &rtsig_name,
+ ngx_rtsig_create_conf, /* create configuration */
+ ngx_rtsig_init_conf, /* init configuration */
+
+ {
+ NULL, /* add an event */
+ NULL, /* delete an event */
+ NULL, /* enable an event */
+ NULL, /* disable an event */
+ ngx_rtsig_add_connection, /* add an connection */
+ ngx_rtsig_del_connection, /* delete an connection */
+ ngx_rtsig_process_events, /* process the events */
+ ngx_rtsig_init, /* init the events */
+ ngx_rtsig_done, /* done the events */
+ }
+
+};
+
+ngx_module_t ngx_rtsig_module = {
+ NGX_MODULE,
+ &ngx_rtsig_module_ctx, /* module context */
+ ngx_rtsig_commands, /* module directives */
+ NGX_EVENT_MODULE, /* module type */
+ NULL, /* init module */
+ NULL /* init child */
+};
+
+
+static int ngx_rtsig_init(ngx_cycle_t *cycle)
+{
+ ngx_rtsig_conf_t *rtscf;
+
+ rtscf = ngx_event_get_conf(cycle->conf_ctx, ngx_rtsig_module);
+
+ sigemptyset(&set);
+ sigaddset(&set, rtscf->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_rtsig_module_ctx.actions;
+
+ ngx_event_flags = NGX_USE_SIGIO_EVENT;
+
+ return NGX_OK;
+}
+
+
+static void ngx_rtsig_done(ngx_cycle_t *cycle)
+{
+}
+
+
+static int ngx_rtsig_add_connection(ngx_connection_t *c)
+{
+ ngx_rtsig_conf_t *rtscf;
+
+ rtscf = ngx_event_get_conf(ngx_cycle->conf_ctx, ngx_rtsig_module);
+
+ ngx_log_debug2(NGX_LOG_DEBUG_EVENT, c->log, 0,
+ "rtsig add connection: fd:%d signo:%d", c->fd, rtscf->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, rtscf->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_rtsig_del_connection(ngx_connection_t *c)
+{
+ c->read->active = 0;
+ c->write->active = 0;
+
+ return NGX_OK;
+}
+
+
+int ngx_rtsig_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_rtsig_conf_t *rtscf;
+
+ 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, "rtsig 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 (signo == -1) {
+ ngx_log_error((err == NGX_EINTR) ? NGX_LOG_INFO : NGX_LOG_ALERT,
+ 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,
+ "rtsig timer: %d, delta: %d", timer, (int) delta);
+ }
+
+ ngx_log_debug3(NGX_LOG_DEBUG_EVENT, log, 0,
+ "signo:%d fd:%d band:%X", signo, si.si_fd, si.si_band);
+
+ rtscf = ngx_event_get_conf(ngx_cycle->conf_ctx, ngx_rtsig_module);
+
+ if (signo == rtscf->signo) {
+
+ /* TODO: old_cycles */
+ c = &ngx_cycle->connections[si.si_fd];
+
+ /* TODO: stale signals */
+
+ if (si.si_band & (POLLIN|POLLHUP|POLLERR)) {
+ if (c->read->active) {
+ c->read->ready = 1;
+ c->read->event_handler(c->read);
+ }
+ }
+
+ if (si.si_band & (POLLOUT|POLLHUP|POLLERR)) {
+ if (c->write->active) {
+ c->write->ready = 1;
+ c->write->event_handler(c->write);
+ }
+ }
+
+ } else if (signo == SIGIO) {
+ ngx_log_error(NGX_LOG_ALERT, log, ngx_errno,
+ "signal queue overflowed: "
+ "SIGIO, fd:%d, band:%X", si.si_fd, si.si_band);
+
+ ngx_memzero(&sa, sizeof(struct sigaction));
+ sa.sa_handler = SIG_DFL;
+ sigemptyset(&sa.sa_mask);
+ if (sigaction(rtscf->signo, &sa, NULL) == -1) {
+ ngx_log_error(NGX_LOG_ALERT, log, ngx_errno,
+ "sigaction(%d, SIG_DFL) failed", rtscf->signo);
+ }
+
+ } else {
+ ngx_log_error(NGX_LOG_ALERT, log, 0,
+ timer ? "sigtimedwait() returned unexpected signal: %d":
+ "sigwaitinfo() returned unexpected signal: %d",
+ signo);
+ return NGX_ERROR;
+ }
+
+ if (timer != (ngx_msec_t) -1 && delta) {
+ ngx_event_expire_timers((ngx_msec_t) delta);
+ }
+
+ return NGX_OK;
+}
+
+
+static void *ngx_rtsig_create_conf(ngx_cycle_t *cycle)
+{
+ ngx_rtsig_conf_t *rtscf;
+
+ ngx_test_null(rtscf, ngx_palloc(cycle->pool, sizeof(ngx_rtsig_conf_t)),
+ NGX_CONF_ERROR);
+
+ rtscf->signo = NGX_CONF_UNSET;
+
+ return rtscf;
+}
+
+
+static char *ngx_rtsig_init_conf(ngx_cycle_t *cycle, void *conf)
+{
+ ngx_rtsig_conf_t *rtscf = conf;
+
+ /* LinuxThreads use the first 3 RT signals */
+ ngx_conf_init_value(rtscf->signo, SIGRTMIN + 10);
+
+ return NGX_CONF_OK;
+}
