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-rw-r--r--pjlib/src/pj/ioqueue_epoll.c749
1 files changed, 749 insertions, 0 deletions
diff --git a/pjlib/src/pj/ioqueue_epoll.c b/pjlib/src/pj/ioqueue_epoll.c
new file mode 100644
index 0000000..27845f5
--- /dev/null
+++ b/pjlib/src/pj/ioqueue_epoll.c
@@ -0,0 +1,749 @@
+/* $Id: ioqueue_epoll.c 3553 2011-05-05 06:14:19Z nanang $ */
+/*
+ * Copyright (C) 2008-2011 Teluu Inc. (http://www.teluu.com)
+ * Copyright (C) 2003-2008 Benny Prijono <benny@prijono.org>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+/*
+ * ioqueue_epoll.c
+ *
+ * This is the implementation of IOQueue framework using /dev/epoll
+ * API in _both_ Linux user-mode and kernel-mode.
+ */
+
+#include <pj/ioqueue.h>
+#include <pj/os.h>
+#include <pj/lock.h>
+#include <pj/log.h>
+#include <pj/list.h>
+#include <pj/pool.h>
+#include <pj/string.h>
+#include <pj/assert.h>
+#include <pj/errno.h>
+#include <pj/sock.h>
+#include <pj/compat/socket.h>
+
+#if !defined(PJ_LINUX_KERNEL) || PJ_LINUX_KERNEL==0
+ /*
+ * Linux user mode
+ */
+# include <sys/epoll.h>
+# include <errno.h>
+# include <unistd.h>
+
+# define epoll_data data.ptr
+# define epoll_data_type void*
+# define ioctl_val_type unsigned long
+# define getsockopt_val_ptr int*
+# define os_getsockopt getsockopt
+# define os_ioctl ioctl
+# define os_read read
+# define os_close close
+# define os_epoll_create epoll_create
+# define os_epoll_ctl epoll_ctl
+# define os_epoll_wait epoll_wait
+#else
+ /*
+ * Linux kernel mode.
+ */
+# include <linux/config.h>
+# include <linux/version.h>
+# if defined(MODVERSIONS)
+# include <linux/modversions.h>
+# endif
+# include <linux/kernel.h>
+# include <linux/poll.h>
+# include <linux/eventpoll.h>
+# include <linux/syscalls.h>
+# include <linux/errno.h>
+# include <linux/unistd.h>
+# include <asm/ioctls.h>
+ enum EPOLL_EVENTS
+ {
+ EPOLLIN = 0x001,
+ EPOLLOUT = 0x004,
+ EPOLLERR = 0x008,
+ };
+# define os_epoll_create sys_epoll_create
+ static int os_epoll_ctl(int epfd, int op, int fd, struct epoll_event *event)
+ {
+ long rc;
+ mm_segment_t oldfs = get_fs();
+ set_fs(KERNEL_DS);
+ rc = sys_epoll_ctl(epfd, op, fd, event);
+ set_fs(oldfs);
+ if (rc) {
+ errno = -rc;
+ return -1;
+ } else {
+ return 0;
+ }
+ }
+ static int os_epoll_wait(int epfd, struct epoll_event *events,
+ int maxevents, int timeout)
+ {
+ int count;
+ mm_segment_t oldfs = get_fs();
+ set_fs(KERNEL_DS);
+ count = sys_epoll_wait(epfd, events, maxevents, timeout);
+ set_fs(oldfs);
+ return count;
+ }
+# define os_close sys_close
+# define os_getsockopt pj_sock_getsockopt
+ static int os_read(int fd, void *buf, size_t len)
+ {
+ long rc;
+ mm_segment_t oldfs = get_fs();
+ set_fs(KERNEL_DS);
+ rc = sys_read(fd, buf, len);
+ set_fs(oldfs);
+ if (rc) {
+ errno = -rc;
+ return -1;
+ } else {
+ return 0;
+ }
+ }
+# define socklen_t unsigned
+# define ioctl_val_type unsigned long
+ int ioctl(int fd, int opt, ioctl_val_type value);
+ static int os_ioctl(int fd, int opt, ioctl_val_type value)
+ {
+ int rc;
+ mm_segment_t oldfs = get_fs();
+ set_fs(KERNEL_DS);
+ rc = ioctl(fd, opt, value);
+ set_fs(oldfs);
+ if (rc < 0) {
+ errno = -rc;
+ return rc;
+ } else
+ return rc;
+ }
+# define getsockopt_val_ptr char*
+
+# define epoll_data data
+# define epoll_data_type __u32
+#endif
+
+#define THIS_FILE "ioq_epoll"
+
+//#define TRACE_(expr) PJ_LOG(3,expr)
+#define TRACE_(expr)
+
+/*
+ * Include common ioqueue abstraction.
+ */
+#include "ioqueue_common_abs.h"
+
+/*
+ * This describes each key.
+ */
+struct pj_ioqueue_key_t
+{
+ DECLARE_COMMON_KEY
+};
+
+struct queue
+{
+ pj_ioqueue_key_t *key;
+ enum ioqueue_event_type event_type;
+};
+
+/*
+ * This describes the I/O queue.
+ */
+struct pj_ioqueue_t
+{
+ DECLARE_COMMON_IOQUEUE
+
+ unsigned max, count;
+ //pj_ioqueue_key_t hlist;
+ pj_ioqueue_key_t active_list;
+ int epfd;
+ //struct epoll_event *events;
+ //struct queue *queue;
+
+#if PJ_IOQUEUE_HAS_SAFE_UNREG
+ pj_mutex_t *ref_cnt_mutex;
+ pj_ioqueue_key_t closing_list;
+ pj_ioqueue_key_t free_list;
+#endif
+};
+
+/* Include implementation for common abstraction after we declare
+ * pj_ioqueue_key_t and pj_ioqueue_t.
+ */
+#include "ioqueue_common_abs.c"
+
+#if PJ_IOQUEUE_HAS_SAFE_UNREG
+/* Scan closing keys to be put to free list again */
+static void scan_closing_keys(pj_ioqueue_t *ioqueue);
+#endif
+
+/*
+ * pj_ioqueue_name()
+ */
+PJ_DEF(const char*) pj_ioqueue_name(void)
+{
+#if defined(PJ_LINUX_KERNEL) && PJ_LINUX_KERNEL!=0
+ return "epoll-kernel";
+#else
+ return "epoll";
+#endif
+}
+
+/*
+ * pj_ioqueue_create()
+ *
+ * Create select ioqueue.
+ */
+PJ_DEF(pj_status_t) pj_ioqueue_create( pj_pool_t *pool,
+ pj_size_t max_fd,
+ pj_ioqueue_t **p_ioqueue)
+{
+ pj_ioqueue_t *ioqueue;
+ pj_status_t rc;
+ pj_lock_t *lock;
+ int i;
+
+ /* Check that arguments are valid. */
+ PJ_ASSERT_RETURN(pool != NULL && p_ioqueue != NULL &&
+ max_fd > 0, PJ_EINVAL);
+
+ /* Check that size of pj_ioqueue_op_key_t is sufficient */
+ PJ_ASSERT_RETURN(sizeof(pj_ioqueue_op_key_t)-sizeof(void*) >=
+ sizeof(union operation_key), PJ_EBUG);
+
+ ioqueue = pj_pool_alloc(pool, sizeof(pj_ioqueue_t));
+
+ ioqueue_init(ioqueue);
+
+ ioqueue->max = max_fd;
+ ioqueue->count = 0;
+ pj_list_init(&ioqueue->active_list);
+
+#if PJ_IOQUEUE_HAS_SAFE_UNREG
+ /* When safe unregistration is used (the default), we pre-create
+ * all keys and put them in the free list.
+ */
+
+ /* Mutex to protect key's reference counter
+ * We don't want to use key's mutex or ioqueue's mutex because
+ * that would create deadlock situation in some cases.
+ */
+ rc = pj_mutex_create_simple(pool, NULL, &ioqueue->ref_cnt_mutex);
+ if (rc != PJ_SUCCESS)
+ return rc;
+
+
+ /* Init key list */
+ pj_list_init(&ioqueue->free_list);
+ pj_list_init(&ioqueue->closing_list);
+
+
+ /* Pre-create all keys according to max_fd */
+ for ( i=0; i<max_fd; ++i) {
+ pj_ioqueue_key_t *key;
+
+ key = PJ_POOL_ALLOC_T(pool, pj_ioqueue_key_t);
+ key->ref_count = 0;
+ rc = pj_mutex_create_recursive(pool, NULL, &key->mutex);
+ if (rc != PJ_SUCCESS) {
+ key = ioqueue->free_list.next;
+ while (key != &ioqueue->free_list) {
+ pj_mutex_destroy(key->mutex);
+ key = key->next;
+ }
+ pj_mutex_destroy(ioqueue->ref_cnt_mutex);
+ return rc;
+ }
+
+ pj_list_push_back(&ioqueue->free_list, key);
+ }
+#endif
+
+ rc = pj_lock_create_simple_mutex(pool, "ioq%p", &lock);
+ if (rc != PJ_SUCCESS)
+ return rc;
+
+ rc = pj_ioqueue_set_lock(ioqueue, lock, PJ_TRUE);
+ if (rc != PJ_SUCCESS)
+ return rc;
+
+ ioqueue->epfd = os_epoll_create(max_fd);
+ if (ioqueue->epfd < 0) {
+ ioqueue_destroy(ioqueue);
+ return PJ_RETURN_OS_ERROR(pj_get_native_os_error());
+ }
+
+ /*ioqueue->events = pj_pool_calloc(pool, max_fd, sizeof(struct epoll_event));
+ PJ_ASSERT_RETURN(ioqueue->events != NULL, PJ_ENOMEM);
+
+ ioqueue->queue = pj_pool_calloc(pool, max_fd, sizeof(struct queue));
+ PJ_ASSERT_RETURN(ioqueue->queue != NULL, PJ_ENOMEM);
+ */
+ PJ_LOG(4, ("pjlib", "epoll I/O Queue created (%p)", ioqueue));
+
+ *p_ioqueue = ioqueue;
+ return PJ_SUCCESS;
+}
+
+/*
+ * pj_ioqueue_destroy()
+ *
+ * Destroy ioqueue.
+ */
+PJ_DEF(pj_status_t) pj_ioqueue_destroy(pj_ioqueue_t *ioqueue)
+{
+ pj_ioqueue_key_t *key;
+
+ PJ_ASSERT_RETURN(ioqueue, PJ_EINVAL);
+ PJ_ASSERT_RETURN(ioqueue->epfd > 0, PJ_EINVALIDOP);
+
+ pj_lock_acquire(ioqueue->lock);
+ os_close(ioqueue->epfd);
+ ioqueue->epfd = 0;
+
+#if PJ_IOQUEUE_HAS_SAFE_UNREG
+ /* Destroy reference counters */
+ key = ioqueue->active_list.next;
+ while (key != &ioqueue->active_list) {
+ pj_mutex_destroy(key->mutex);
+ key = key->next;
+ }
+
+ key = ioqueue->closing_list.next;
+ while (key != &ioqueue->closing_list) {
+ pj_mutex_destroy(key->mutex);
+ key = key->next;
+ }
+
+ key = ioqueue->free_list.next;
+ while (key != &ioqueue->free_list) {
+ pj_mutex_destroy(key->mutex);
+ key = key->next;
+ }
+
+ pj_mutex_destroy(ioqueue->ref_cnt_mutex);
+#endif
+ return ioqueue_destroy(ioqueue);
+}
+
+/*
+ * pj_ioqueue_register_sock()
+ *
+ * Register a socket to ioqueue.
+ */
+PJ_DEF(pj_status_t) pj_ioqueue_register_sock( pj_pool_t *pool,
+ pj_ioqueue_t *ioqueue,
+ pj_sock_t sock,
+ void *user_data,
+ const pj_ioqueue_callback *cb,
+ pj_ioqueue_key_t **p_key)
+{
+ pj_ioqueue_key_t *key = NULL;
+ pj_uint32_t value;
+ struct epoll_event ev;
+ int status;
+ pj_status_t rc = PJ_SUCCESS;
+
+ PJ_ASSERT_RETURN(pool && ioqueue && sock != PJ_INVALID_SOCKET &&
+ cb && p_key, PJ_EINVAL);
+
+ pj_lock_acquire(ioqueue->lock);
+
+ if (ioqueue->count >= ioqueue->max) {
+ rc = PJ_ETOOMANY;
+ TRACE_((THIS_FILE, "pj_ioqueue_register_sock error: too many files"));
+ goto on_return;
+ }
+
+ /* Set socket to nonblocking. */
+ value = 1;
+ if ((rc=os_ioctl(sock, FIONBIO, (ioctl_val_type)&value))) {
+ TRACE_((THIS_FILE, "pj_ioqueue_register_sock error: ioctl rc=%d",
+ rc));
+ rc = pj_get_netos_error();
+ goto on_return;
+ }
+
+ /* If safe unregistration (PJ_IOQUEUE_HAS_SAFE_UNREG) is used, get
+ * the key from the free list. Otherwise allocate a new one.
+ */
+#if PJ_IOQUEUE_HAS_SAFE_UNREG
+
+ /* Scan closing_keys first to let them come back to free_list */
+ scan_closing_keys(ioqueue);
+
+ pj_assert(!pj_list_empty(&ioqueue->free_list));
+ if (pj_list_empty(&ioqueue->free_list)) {
+ rc = PJ_ETOOMANY;
+ goto on_return;
+ }
+
+ key = ioqueue->free_list.next;
+ pj_list_erase(key);
+#else
+ /* Create key. */
+ key = (pj_ioqueue_key_t*)pj_pool_zalloc(pool, sizeof(pj_ioqueue_key_t));
+#endif
+
+ rc = ioqueue_init_key(pool, ioqueue, key, sock, user_data, cb);
+ if (rc != PJ_SUCCESS) {
+ key = NULL;
+ goto on_return;
+ }
+
+ /* Create key's mutex */
+ /* rc = pj_mutex_create_recursive(pool, NULL, &key->mutex);
+ if (rc != PJ_SUCCESS) {
+ key = NULL;
+ goto on_return;
+ }
+*/
+ /* os_epoll_ctl. */
+ ev.events = EPOLLIN | EPOLLERR;
+ ev.epoll_data = (epoll_data_type)key;
+ status = os_epoll_ctl(ioqueue->epfd, EPOLL_CTL_ADD, sock, &ev);
+ if (status < 0) {
+ rc = pj_get_os_error();
+ pj_mutex_destroy(key->mutex);
+ key = NULL;
+ TRACE_((THIS_FILE,
+ "pj_ioqueue_register_sock error: os_epoll_ctl rc=%d",
+ status));
+ goto on_return;
+ }
+
+ /* Register */
+ pj_list_insert_before(&ioqueue->active_list, key);
+ ++ioqueue->count;
+
+ //TRACE_((THIS_FILE, "socket registered, count=%d", ioqueue->count));
+
+on_return:
+ *p_key = key;
+ pj_lock_release(ioqueue->lock);
+
+ return rc;
+}
+
+#if PJ_IOQUEUE_HAS_SAFE_UNREG
+/* Increment key's reference counter */
+static void increment_counter(pj_ioqueue_key_t *key)
+{
+ pj_mutex_lock(key->ioqueue->ref_cnt_mutex);
+ ++key->ref_count;
+ pj_mutex_unlock(key->ioqueue->ref_cnt_mutex);
+}
+
+/* Decrement the key's reference counter, and when the counter reach zero,
+ * destroy the key.
+ *
+ * Note: MUST NOT CALL THIS FUNCTION WHILE HOLDING ioqueue's LOCK.
+ */
+static void decrement_counter(pj_ioqueue_key_t *key)
+{
+ pj_lock_acquire(key->ioqueue->lock);
+ pj_mutex_lock(key->ioqueue->ref_cnt_mutex);
+ --key->ref_count;
+ if (key->ref_count == 0) {
+
+ pj_assert(key->closing == 1);
+ pj_gettickcount(&key->free_time);
+ key->free_time.msec += PJ_IOQUEUE_KEY_FREE_DELAY;
+ pj_time_val_normalize(&key->free_time);
+
+ pj_list_erase(key);
+ pj_list_push_back(&key->ioqueue->closing_list, key);
+
+ }
+ pj_mutex_unlock(key->ioqueue->ref_cnt_mutex);
+ pj_lock_release(key->ioqueue->lock);
+}
+#endif
+
+/*
+ * pj_ioqueue_unregister()
+ *
+ * Unregister handle from ioqueue.
+ */
+PJ_DEF(pj_status_t) pj_ioqueue_unregister( pj_ioqueue_key_t *key)
+{
+ pj_ioqueue_t *ioqueue;
+ struct epoll_event ev;
+ int status;
+
+ PJ_ASSERT_RETURN(key != NULL, PJ_EINVAL);
+
+ ioqueue = key->ioqueue;
+
+ /* Lock the key to make sure no callback is simultaneously modifying
+ * the key. We need to lock the key before ioqueue here to prevent
+ * deadlock.
+ */
+ pj_mutex_lock(key->mutex);
+
+ /* Also lock ioqueue */
+ pj_lock_acquire(ioqueue->lock);
+
+ pj_assert(ioqueue->count > 0);
+ --ioqueue->count;
+#if !PJ_IOQUEUE_HAS_SAFE_UNREG
+ pj_list_erase(key);
+#endif
+
+ ev.events = 0;
+ ev.epoll_data = (epoll_data_type)key;
+ status = os_epoll_ctl( ioqueue->epfd, EPOLL_CTL_DEL, key->fd, &ev);
+ if (status != 0) {
+ pj_status_t rc = pj_get_os_error();
+ pj_lock_release(ioqueue->lock);
+ return rc;
+ }
+
+ /* Destroy the key. */
+ pj_sock_close(key->fd);
+
+ pj_lock_release(ioqueue->lock);
+
+
+#if PJ_IOQUEUE_HAS_SAFE_UNREG
+ /* Mark key is closing. */
+ key->closing = 1;
+
+ /* Decrement counter. */
+ decrement_counter(key);
+
+ /* Done. */
+ pj_mutex_unlock(key->mutex);
+#else
+ pj_mutex_destroy(key->mutex);
+#endif
+
+ return PJ_SUCCESS;
+}
+
+/* ioqueue_remove_from_set()
+ * This function is called from ioqueue_dispatch_event() to instruct
+ * the ioqueue to remove the specified descriptor from ioqueue's descriptor
+ * set for the specified event.
+ */
+static void ioqueue_remove_from_set( pj_ioqueue_t *ioqueue,
+ pj_ioqueue_key_t *key,
+ enum ioqueue_event_type event_type)
+{
+ if (event_type == WRITEABLE_EVENT) {
+ struct epoll_event ev;
+
+ ev.events = EPOLLIN | EPOLLERR;
+ ev.epoll_data = (epoll_data_type)key;
+ os_epoll_ctl( ioqueue->epfd, EPOLL_CTL_MOD, key->fd, &ev);
+ }
+}
+
+/*
+ * ioqueue_add_to_set()
+ * This function is called from pj_ioqueue_recv(), pj_ioqueue_send() etc
+ * to instruct the ioqueue to add the specified handle to ioqueue's descriptor
+ * set for the specified event.
+ */
+static void ioqueue_add_to_set( pj_ioqueue_t *ioqueue,
+ pj_ioqueue_key_t *key,
+ enum ioqueue_event_type event_type )
+{
+ if (event_type == WRITEABLE_EVENT) {
+ struct epoll_event ev;
+
+ ev.events = EPOLLIN | EPOLLOUT | EPOLLERR;
+ ev.epoll_data = (epoll_data_type)key;
+ os_epoll_ctl( ioqueue->epfd, EPOLL_CTL_MOD, key->fd, &ev);
+ }
+}
+
+#if PJ_IOQUEUE_HAS_SAFE_UNREG
+/* Scan closing keys to be put to free list again */
+static void scan_closing_keys(pj_ioqueue_t *ioqueue)
+{
+ pj_time_val now;
+ pj_ioqueue_key_t *h;
+
+ pj_gettickcount(&now);
+ h = ioqueue->closing_list.next;
+ while (h != &ioqueue->closing_list) {
+ pj_ioqueue_key_t *next = h->next;
+
+ pj_assert(h->closing != 0);
+
+ if (PJ_TIME_VAL_GTE(now, h->free_time)) {
+ pj_list_erase(h);
+ pj_list_push_back(&ioqueue->free_list, h);
+ }
+ h = next;
+ }
+}
+#endif
+
+/*
+ * pj_ioqueue_poll()
+ *
+ */
+PJ_DEF(int) pj_ioqueue_poll( pj_ioqueue_t *ioqueue, const pj_time_val *timeout)
+{
+ int i, count, processed;
+ int msec;
+ //struct epoll_event *events = ioqueue->events;
+ //struct queue *queue = ioqueue->queue;
+ struct epoll_event events[PJ_IOQUEUE_MAX_EVENTS_IN_SINGLE_POLL];
+ struct queue queue[PJ_IOQUEUE_MAX_EVENTS_IN_SINGLE_POLL];
+ pj_timestamp t1, t2;
+
+ PJ_CHECK_STACK();
+
+ msec = timeout ? PJ_TIME_VAL_MSEC(*timeout) : 9000;
+
+ TRACE_((THIS_FILE, "start os_epoll_wait, msec=%d", msec));
+ pj_get_timestamp(&t1);
+
+ //count = os_epoll_wait( ioqueue->epfd, events, ioqueue->max, msec);
+ count = os_epoll_wait( ioqueue->epfd, events, PJ_IOQUEUE_MAX_EVENTS_IN_SINGLE_POLL, msec);
+ if (count == 0) {
+#if PJ_IOQUEUE_HAS_SAFE_UNREG
+ /* Check the closing keys only when there's no activity and when there are
+ * pending closing keys.
+ */
+ if (count == 0 && !pj_list_empty(&ioqueue->closing_list)) {
+ pj_lock_acquire(ioqueue->lock);
+ scan_closing_keys(ioqueue);
+ pj_lock_release(ioqueue->lock);
+ }
+#endif
+ TRACE_((THIS_FILE, "os_epoll_wait timed out"));
+ return count;
+ }
+ else if (count < 0) {
+ TRACE_((THIS_FILE, "os_epoll_wait error"));
+ return -pj_get_netos_error();
+ }
+
+ pj_get_timestamp(&t2);
+ TRACE_((THIS_FILE, "os_epoll_wait returns %d, time=%d usec",
+ count, pj_elapsed_usec(&t1, &t2)));
+
+ /* Lock ioqueue. */
+ pj_lock_acquire(ioqueue->lock);
+
+ for (processed=0, i=0; i<count; ++i) {
+ pj_ioqueue_key_t *h = (pj_ioqueue_key_t*)(epoll_data_type)
+ events[i].epoll_data;
+
+ TRACE_((THIS_FILE, "event %d: events=%d", i, events[i].events));
+
+ /*
+ * Check readability.
+ */
+ if ((events[i].events & EPOLLIN) &&
+ (key_has_pending_read(h) || key_has_pending_accept(h)) && !IS_CLOSING(h) ) {
+
+#if PJ_IOQUEUE_HAS_SAFE_UNREG
+ increment_counter(h);
+#endif
+ queue[processed].key = h;
+ queue[processed].event_type = READABLE_EVENT;
+ ++processed;
+ }
+
+ /*
+ * Check for writeability.
+ */
+ if ((events[i].events & EPOLLOUT) && key_has_pending_write(h) && !IS_CLOSING(h)) {
+
+#if PJ_IOQUEUE_HAS_SAFE_UNREG
+ increment_counter(h);
+#endif
+ queue[processed].key = h;
+ queue[processed].event_type = WRITEABLE_EVENT;
+ ++processed;
+ }
+
+#if PJ_HAS_TCP
+ /*
+ * Check for completion of connect() operation.
+ */
+ if ((events[i].events & EPOLLOUT) && (h->connecting) && !IS_CLOSING(h)) {
+
+#if PJ_IOQUEUE_HAS_SAFE_UNREG
+ increment_counter(h);
+#endif
+ queue[processed].key = h;
+ queue[processed].event_type = WRITEABLE_EVENT;
+ ++processed;
+ }
+#endif /* PJ_HAS_TCP */
+
+ /*
+ * Check for error condition.
+ */
+ if (events[i].events & EPOLLERR && (h->connecting) && !IS_CLOSING(h)) {
+
+#if PJ_IOQUEUE_HAS_SAFE_UNREG
+ increment_counter(h);
+#endif
+ queue[processed].key = h;
+ queue[processed].event_type = EXCEPTION_EVENT;
+ ++processed;
+ }
+ }
+ pj_lock_release(ioqueue->lock);
+
+ /* Now process the events. */
+ for (i=0; i<processed; ++i) {
+ switch (queue[i].event_type) {
+ case READABLE_EVENT:
+ ioqueue_dispatch_read_event(ioqueue, queue[i].key);
+ break;
+ case WRITEABLE_EVENT:
+ ioqueue_dispatch_write_event(ioqueue, queue[i].key);
+ break;
+ case EXCEPTION_EVENT:
+ ioqueue_dispatch_exception_event(ioqueue, queue[i].key);
+ break;
+ case NO_EVENT:
+ pj_assert(!"Invalid event!");
+ break;
+ }
+
+#if PJ_IOQUEUE_HAS_SAFE_UNREG
+ decrement_counter(queue[i].key);
+#endif
+ }
+
+ /* Special case:
+ * When epoll returns > 0 but no descriptors are actually set!
+ */
+ if (count > 0 && !processed && msec > 0) {
+ pj_thread_sleep(msec);
+ }
+
+ pj_get_timestamp(&t1);
+ TRACE_((THIS_FILE, "ioqueue_poll() returns %d, time=%d usec",
+ processed, pj_elapsed_usec(&t2, &t1)));
+
+ return processed;
+}
+
generated by cgit v1.2.3 (git 2.39.1) at 2024-05-23 20:00:27 +0000