server: Only call gettimeofday once per poll loop.

server/fd.c

@@ -302,6 +302,7 @@ struct timeout_user
 };
 
 static struct list timeout_list = LIST_INIT(timeout_list);   /* sorted timeouts list */
+struct timeval current_time;
 
 /* add a timeout user */
 struct timeout_user *add_timeout_user( const struct timeval *when, timeout_callback func,
@@ -440,6 +441,7 @@ static inline void main_loop_epoll(void)
         if (epoll_fd == -1) break;  /* an error occurred with epoll */
 
         ret = epoll_wait( epoll_fd, events, sizeof(events)/sizeof(events[0]), timeout );
+        gettimeofday( &current_time, NULL );
 
         /* put the events into the pollfd array first, like poll does */
         for (i = 0; i < ret; i++)
@@ -545,6 +547,8 @@ static inline void main_loop_epoll(void)
         }
         else ret = kevent( kqueue_fd, NULL, 0, events, sizeof(events)/sizeof(events[0]), NULL );
 
+        gettimeofday( &current_time, NULL );
+
         /* put the events into the pollfd array first, like poll does */
         for (i = 0; i < ret; i++)
         {
@@ -641,9 +645,6 @@ static int get_next_timeout(void)
     if (!list_empty( &timeout_list ))
     {
         struct list expired_list, *ptr;
-        struct timeval now;
-
-        gettimeofday( &now, NULL );
 
         /* first remove all expired timers from the list */
 
@@ -652,7 +653,7 @@ static int get_next_timeout(void)
         {
             struct timeout_user *timeout = LIST_ENTRY( ptr, struct timeout_user, entry );
 
-            if (!time_before( &now, &timeout->when ))
+            if (!time_before( &current_time, &timeout->when ))
             {
                 list_remove( &timeout->entry );
                 list_add_tail( &expired_list, &timeout->entry );
@@ -673,8 +674,8 @@ static int get_next_timeout(void)
         if ((ptr = list_head( &timeout_list )) != NULL)
         {
             struct timeout_user *timeout = LIST_ENTRY( ptr, struct timeout_user, entry );
-            int diff = (timeout->when.tv_sec - now.tv_sec) * 1000
-                     + (timeout->when.tv_usec - now.tv_usec + 999) / 1000;
+            int diff = (timeout->when.tv_sec - current_time.tv_sec) * 1000
+                     + (timeout->when.tv_usec - current_time.tv_usec + 999) / 1000;
             if (diff < 0) diff = 0;
             return diff;
         }
@@ -687,6 +688,8 @@ void main_loop(void)
 {
     int i, ret, timeout;
 
+    gettimeofday( &current_time, NULL );
+
     main_loop_epoll();
     /* fall through to normal poll loop */
 
@@ -697,6 +700,8 @@ void main_loop(void)
         if (!active_users) break;  /* last user removed by a timeout */
 
         ret = poll( pollfd, nb_users, timeout );
+        gettimeofday( &current_time, NULL );
+
         if (ret > 0)
         {
             for (i = 0; i < nb_users; i++)

server/file.h

@@ -82,6 +82,7 @@ inline static struct fd *get_obj_fd( struct object *obj ) { return obj->ops->get
 /* timeout functions */
 
 struct timeout_user;
+extern struct timeval current_time;
 
 typedef void (*timeout_callback)( void *private );
 

server/mailslot.c

@@ -267,8 +267,7 @@ static void mailslot_queue_async( struct fd *fd, void *apc, void *user,
 
     if (mailslot->read_timeout != -1)
     {
-        struct timeval when;
-        gettimeofday( &when, NULL );
+        struct timeval when = current_time;
         add_timeout( &when, mailslot->read_timeout );
         fd_queue_async_timeout( fd, apc, user, iosb, type, count, &when );
     }

server/named_pipe.c

@@ -488,9 +488,7 @@ static void check_flushed( void *arg )
     assert( server->event );
     if (pipe_data_remaining( server ))
     {
-        struct timeval tv;
-
-        gettimeofday( &tv, NULL );
+        struct timeval tv = current_time;
         add_timeout( &tv, 100 );
         server->flush_poll = add_timeout_user( &tv, check_flushed, server );
     }
@@ -521,14 +519,13 @@ static int pipe_server_flush( struct fd *fd, struct event **event )
 
     if (pipe_data_remaining( server ))
     {
-        struct timeval tv;
+        struct timeval tv = current_time;
 
         /* this kind of sux - 
            there's no unix way to be alerted when a pipe becomes empty */
         server->event = create_event( NULL, NULL, 0, 0, 0 );
         if (!server->event)
             return 0;
-        gettimeofday( &tv, NULL );
         add_timeout( &tv, 100 );
         server->flush_poll = add_timeout_user( &tv, check_flushed, server );
         *event = server->event;
@@ -873,9 +870,7 @@ DECL_HANDLER(wait_named_pipe)
                           req->func, req->event, NULL );
         else
         {
-            struct timeval when;
-
-            gettimeofday( &when, NULL );
+            struct timeval when = current_time;
             if (req->timeout == NMPWAIT_USE_DEFAULT_WAIT) add_timeout( &when, pipe->timeout );
             else add_timeout( &when, req->timeout );
             create_async( current, &when, &pipe->waiters, req->func, req->event, NULL );

server/process.c

@@ -255,7 +255,7 @@ struct thread *create_process( int fd, struct thread *parent_thread, int inherit
     list_init( &process->classes );
     list_init( &process->dlls );
 
-    gettimeofday( &process->start_time, NULL );
+    process->start_time = current_time;
     process->end_time.tv_sec = process->end_time.tv_usec = 0;
     list_add_head( &process_list, &process->entry );
 
@@ -508,7 +508,7 @@ static void process_killed( struct process *process )
     struct list *ptr;
 
     assert( list_empty( &process->thread_list ));
-    gettimeofday( &process->end_time, NULL );
+    process->end_time = current_time;
     close_process_desktop( process );
     handles = process->handles;
     process->handles = NULL;

server/queue.c

@@ -253,7 +253,7 @@ static struct msg_queue *create_msg_queue( struct thread *thread, struct thread_
         queue->timeout         = NULL;
         queue->input           = (struct thread_input *)grab_object( input );
         queue->hooks           = NULL;
-        gettimeofday( &queue->last_get_msg, NULL );
+        queue->last_get_msg    = current_time;
         list_init( &queue->send_result );
         list_init( &queue->callback_result );
         list_init( &queue->pending_timers );
@@ -567,8 +567,7 @@ static struct message_result *alloc_message_result( struct msg_queue *send_queue
 
         if (timeout)
         {
-            struct timeval when;
-            gettimeofday( &when, NULL );
+            struct timeval when = current_time;
             add_timeout( &when, timeout );
             result->timeout = add_timeout_user( &when, result_timeout, result );
         }
@@ -749,11 +748,9 @@ static void cleanup_results( struct msg_queue *queue )
 /* check if the thread owning the queue is hung (not checking for messages) */
 static int is_queue_hung( struct msg_queue *queue )
 {
-    struct timeval now;
     struct wait_queue_entry *entry;
 
-    gettimeofday( &now, NULL );
-    if (now.tv_sec - queue->last_get_msg.tv_sec <= 5)
+    if (current_time.tv_sec - queue->last_get_msg.tv_sec <= 5)
         return 0;  /* less than 5 seconds since last get message -> not hung */
 
     LIST_FOR_EACH_ENTRY( entry, &queue->obj.wait_queue, struct wait_queue_entry, entry )
@@ -1027,11 +1024,8 @@ static void free_timer( struct msg_queue *queue, struct timer *timer )
 /* restart an expired timer */
 static void restart_timer( struct msg_queue *queue, struct timer *timer )
 {
-    struct timeval now;
-
     list_remove( &timer->entry );
-    gettimeofday( &now, NULL );
-    while (!time_before( &now, &timer->when )) add_timeout( &timer->when, timer->rate );
+    while (!time_before( &current_time, &timer->when )) add_timeout( &timer->when, timer->rate );
     link_timer( queue, timer );
     set_next_timer( queue );
 }
@@ -1062,8 +1056,8 @@ static struct timer *set_timer( struct msg_queue *queue, unsigned int rate )
     struct timer *timer = mem_alloc( sizeof(*timer) );
     if (timer)
     {
-        timer->rate  = max( rate, 1 );
-        gettimeofday( &timer->when, NULL );
+        timer->rate = max( rate, 1 );
+        timer->when = current_time;
         add_timeout( &timer->when, rate );
         link_timer( queue, timer );
         /* check if we replaced the next timer */
@@ -1711,7 +1705,7 @@ DECL_HANDLER(get_message)
     reply->active_hooks = get_active_hooks();
 
     if (!queue) return;
-    gettimeofday( &queue->last_get_msg, NULL );
+    queue->last_get_msg = current_time;
 
     /* first check for sent messages */
     if ((ptr = list_head( &queue->msg_list[SEND_MESSAGE] )))

server/registry.c

@@ -1682,9 +1682,8 @@ static void periodic_save( void *arg )
 /* start the periodic save timer */
 static void set_periodic_save_timer(void)
 {
-    struct timeval next;
+    struct timeval next = current_time;
 
-    gettimeofday( &next, NULL );
     add_timeout( &next, save_period );
     if (save_timeout_user) remove_timeout_user( save_timeout_user );
     save_timeout_user = add_timeout_user( &next, periodic_save, NULL );

server/request.c

@@ -467,10 +467,8 @@ int send_client_fd( struct process *process, int fd, obj_handle_t handle )
 /* get current tick count to return to client */
 unsigned int get_tick_count(void)
 {
-    struct timeval t;
-    gettimeofday( &t, NULL );
-    return ((t.tv_sec - server_start_time.tv_sec) * 1000) +
-           ((t.tv_usec - server_start_time.tv_usec) / 1000);
+    return ((current_time.tv_sec - server_start_time.tv_sec) * 1000) +
+           ((current_time.tv_usec - server_start_time.tv_usec) / 1000);
 }
 
 static void master_socket_dump( struct object *obj, int verbose )
@@ -826,13 +824,11 @@ static void close_socket_timeout( void *arg )
 /* close the master socket and stop waiting for new clients */
 void close_master_socket(void)
 {
-    struct timeval when;
-
     if (master_socket_timeout == -1) return;  /* just keep running forever */
 
     if (master_socket_timeout)
     {
-        gettimeofday( &when, NULL );
+        struct timeval when = current_time;
         add_timeout( &when, master_socket_timeout * 1000 );
         master_socket->timeout = add_timeout_user( &when, close_socket_timeout, NULL );
     }

server/serial.c

@@ -246,7 +246,7 @@ static void serial_queue_async( struct fd *fd, void *apc, void *user, void *iosb
 {
     struct serial *serial = get_fd_user( fd );
     struct list *queue;
-    struct timeval when;
+    struct timeval when = current_time;
     int timeout;
     int events;
 
@@ -271,7 +271,6 @@ static void serial_queue_async( struct fd *fd, void *apc, void *user, void *iosb
         return;
     }
 
-    gettimeofday( &when, NULL );
     add_timeout( &when, timeout );
     if (!create_async( current, &when, queue, apc, user, iosb )) return;
 

server/thread.c

@@ -146,7 +146,7 @@ inline static void init_thread_structure( struct thread *thread )
     thread->desktop_users   = 0;
     thread->token           = NULL;
 
-    gettimeofday( &thread->creation_time,  NULL );
+    thread->creation_time = current_time;
     thread->exit_time.tv_sec = thread->exit_time.tv_usec = 0;
 
     list_init( &thread->mutex_list );
@@ -468,9 +468,7 @@ static int check_wait( struct thread *thread )
     if ((wait->flags & SELECT_ALERTABLE) && !list_empty(&thread->user_apc)) return STATUS_USER_APC;
     if (wait->flags & SELECT_TIMEOUT)
     {
-        struct timeval now;
-        gettimeofday( &now, NULL );
-        if (!time_before( &now, &wait->timeout )) return STATUS_TIMEOUT;
+        if (!time_before( &current_time, &wait->timeout )) return STATUS_TIMEOUT;
     }
     return -1;
 }
@@ -737,7 +735,7 @@ void kill_thread( struct thread *thread, int violent_death )
 {
     if (thread->state == TERMINATED) return;  /* already killed */
     thread->state = TERMINATED;
-    gettimeofday( &thread->exit_time, NULL );
+    thread->exit_time = current_time;
     if (current == thread) current = NULL;
     if (debug_level)
         fprintf( stderr,"%04x: *killed* exit_code=%d\n",

server/timer.c

@@ -156,7 +156,7 @@ static int set_timer( struct timer *timer, const abs_time_t *expire, int period,
     if (!expire->sec && !expire->usec)
     {
         /* special case: use now + period as first expiration */
-        gettimeofday( &timer->when, NULL );
+        timer->when = current_time;
         add_timeout( &timer->when, period );
     }
     else

server/trace.c

@@ -36,6 +36,7 @@
 #include "winbase.h"
 #include "wincon.h"
 #include "winternl.h"
+#include "file.h"
 #include "request.h"
 #include "unicode.h"
 
@@ -63,7 +64,6 @@ static void dump_uints( const int *ptr, int len )
 
 static void dump_abs_time( const abs_time_t *time )
 {
-    struct timeval tv;
     int secs, usecs;
 
     if (!time->sec && !time->usec)
@@ -71,9 +71,8 @@ static void dump_abs_time( const abs_time_t *time )
         fprintf( stderr, "0" );
         return;
     }
-    gettimeofday( &tv, NULL );
-    secs = time->sec - tv.tv_sec;
-    if ((usecs = time->usec - tv.tv_usec) < 0)
+    secs = time->sec - current_time.tv_sec;
+    if ((usecs = time->usec - current_time.tv_usec) < 0)
     {
         usecs += 1000000;
         secs--;

server/winstation.c

@@ -337,8 +337,7 @@ void close_process_desktop( struct process *process )
         /* if we have one remaining user, it has to be the manager of the desktop window */
         if (desktop->users == 1 && get_top_window_owner( desktop ))
         {
-            struct timeval when;
-            gettimeofday( &when, NULL );
+            struct timeval when = current_time;
             add_timeout( &when, 1000 );
             assert( !desktop->close_timeout );
             desktop->close_timeout = add_timeout_user( &when, close_desktop_timeout, desktop );