Initial revision

git-svn-id: svn://svn.code.sf.net/p/tigervnc/code/trunk@2 3789f03b-4d11-0410-bbf8-ca57d06f2519

1 files changed, 105 insertions, 0 deletions

diff --git a/tx/Timer.cxx b/tx/Timer.cxx
new file mode 100644
index 00000000..78cff1c2
--- /dev/null
+++ b/tx/Timer.cxx
@@ -0,0 +1,105 @@
+/* Copyright (C) 2002-2003 RealVNC Ltd.  All Rights Reserved.
+ *    
+ * This 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 software 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 software; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307,
+ * USA.
+ */
+//
+// Timer.cxx
+//
+
+#include "Timer.h"
+
+static Timer* timers;
+
+void Timer::callTimers()
+{
+  struct timeval now;
+  gettimeofday(&now, 0);
+  while (timers) {
+    Timer* timer = timers;
+    if (timer->before(now)) {
+      timers = timers->next;
+      timer->cb->timerCallback(timer);
+    } else {
+      break;
+    }
+  }
+}
+
+bool Timer::getTimeout(struct timeval* timeout)
+{
+  if (!timers) return false;
+  Timer* timer = timers;
+  struct timeval now;
+  gettimeofday(&now, 0);
+  if (timer->before(now)) {
+    timeout->tv_sec = 0;
+    timeout->tv_usec = 0;
+    return true;
+  }
+  timeout->tv_sec = timer->tv.tv_sec - now.tv_sec;
+  if (timer->tv.tv_usec < now.tv_usec) {
+    timeout->tv_usec = timer->tv.tv_usec + 1000000 - now.tv_usec;
+    timeout->tv_sec--;
+  } else {
+    timeout->tv_usec = timer->tv.tv_usec - now.tv_usec;
+  }
+  return true;
+}
+
+Timer::Timer(TimerCallback* cb_) : cb(cb_) {}
+Timer::~Timer()
+{
+  cancel();
+}
+
+void Timer::reset(int ms) {
+  cancel();
+  gettimeofday(&tv, 0);
+  tv.tv_sec += ms / 1000;
+  tv.tv_usec += (ms % 1000) * 1000;
+  if (tv.tv_usec > 1000000) {
+    tv.tv_sec += 1;
+    tv.tv_usec -= 1000000;
+  }
+
+  Timer** timerPtr;
+  for (timerPtr = &timers; *timerPtr; timerPtr = &(*timerPtr)->next) {
+    if (before((*timerPtr)->tv)) {
+      next = *timerPtr;
+      *timerPtr = this;
+      break;
+    }
+  }
+  if (!*timerPtr) {
+    next = 0;
+    *timerPtr = this;
+  }
+}
+
+void Timer::cancel() {
+  for (Timer** timerPtr = &timers; *timerPtr; timerPtr = &(*timerPtr)->next) {
+    if (*timerPtr == this) {
+      *timerPtr = (*timerPtr)->next;
+      break;
+    }
+  }
+}
+
+bool Timer::isSet() {
+  for (Timer* timer = timers; timer; timer = timer->next)
+    if (timer == this) return true;
+  return false;
+}