1 /* 2 * Copyright (C) 2006 Apple Computer, Inc. All rights reserved. 3 * Copyright (C) 2006 Michael Emmel mike.emmel (at) gmail.com 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY 16 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 18 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR 19 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 20 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 21 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 22 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY 23 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 25 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 26 */ 27 28 #include "config.h" 29 #include "SharedTimer.h" 30 31 #include <wtf/Assertions.h> 32 #include <wtf/CurrentTime.h> 33 #include <glib.h> 34 35 namespace WebCore { 36 37 static guint sharedTimer; 38 static void (*sharedTimerFiredFunction)(); 39 40 void setSharedTimerFiredFunction(void (*f)()) 41 { 42 sharedTimerFiredFunction = f; 43 } 44 45 static gboolean timeout_cb(gpointer) 46 { 47 if (sharedTimerFiredFunction) 48 sharedTimerFiredFunction(); 49 return FALSE; 50 } 51 52 void setSharedTimerFireTime(double fireTime) 53 { 54 ASSERT(sharedTimerFiredFunction); 55 56 double interval = fireTime - currentTime(); 57 guint intervalInMS; 58 if (interval < 0) 59 intervalInMS = 0; 60 else { 61 interval *= 1000; 62 intervalInMS = (guint)interval; 63 } 64 65 stopSharedTimer(); 66 if (intervalInMS == 0) 67 sharedTimer = g_idle_add(timeout_cb, NULL); 68 else 69 sharedTimer = g_timeout_add_full(G_PRIORITY_DEFAULT, intervalInMS, timeout_cb, NULL, NULL); 70 } 71 72 void stopSharedTimer() 73 { 74 gboolean s = FALSE; 75 if (sharedTimer == 0) 76 return; 77 78 s = g_source_remove(sharedTimer); 79 ASSERT(s); 80 sharedTimer = 0; 81 } 82 83 } 84