1 files changed, 321 insertions, 0 deletions
diff --git a/kopete/protocols/jabber/jingle/libjingle/talk/base/messagequeue.cpp b/kopete/protocols/jabber/jingle/libjingle/talk/base/messagequeue.cpp
new file mode 100644
index 00000000..f10489f7
--- /dev/null
+++ b/kopete/protocols/jabber/jingle/libjingle/talk/base/messagequeue.cpp
@@ -0,0 +1,321 @@
+/*
+ * libjingle
+ * Copyright 2004--2005, Google Inc.
+ *
+ * Redistribution and use in source and binary forms, with or without 
+ * modification, are permitted provided that the following conditions are met:
+ *
+ *  1. Redistributions of source code must retain the above copyright notice, 
+ *     this list of conditions and the following disclaimer.
+ *  2. Redistributions in binary form must reproduce the above copyright notice,
+ *     this list of conditions and the following disclaimer in the documentation
+ *     and/or other materials provided with the distribution.
+ *  3. The name of the author may not be used to endorse or promote products 
+ *     derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 
+ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
+ * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
+ * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR 
+ * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 
+ * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#if defined(_MSC_VER) && _MSC_VER < 1300
+#pragma warning(disable:4786)
+#endif
+#include "talk/base/messagequeue.h"
+#include "talk/base/physicalsocketserver.h"
+
+#ifdef POSIX
+extern "C" {
+#include <sys/time.h>
+}
+#endif
+
+namespace cricket {
+
+//------------------------------------------------------------------
+// MessageQueueManager
+
+MessageQueueManager* MessageQueueManager::instance_;
+
+MessageQueueManager* MessageQueueManager::Instance() {
+  // Note: This is not thread safe, but it is first called before threads are
+  // spawned.
+  if (!instance_)
+    instance_ = new MessageQueueManager;
+  return instance_;
+}
+
+MessageQueueManager::MessageQueueManager() {
+}
+
+MessageQueueManager::~MessageQueueManager() {
+}
+
+void MessageQueueManager::Add(MessageQueue *message_queue) {
+  CritScope cs(&crit_);
+  message_queues_.push_back(message_queue);
+}
+
+void MessageQueueManager::Remove(MessageQueue *message_queue) {
+  CritScope cs(&crit_);
+  std::vector<MessageQueue *>::iterator iter;
+  iter = std::find(message_queues_.begin(), message_queues_.end(), message_queue);
+  if (iter != message_queues_.end())
+    message_queues_.erase(iter);
+}
+
+void MessageQueueManager::Clear(MessageHandler *handler) {
+  CritScope cs(&crit_);
+  std::vector<MessageQueue *>::iterator iter;
+  for (iter = message_queues_.begin(); iter != message_queues_.end(); iter++)
+    (*iter)->Clear(handler);
+}
+
+//------------------------------------------------------------------
+// MessageQueue
+
+MessageQueue::MessageQueue(SocketServer* ss)
+    : ss_(ss), new_ss(false), fStop_(false), fPeekKeep_(false) {
+  if (!ss_) {
+    new_ss = true;
+    ss_ = new PhysicalSocketServer();
+  }
+  MessageQueueManager::Instance()->Add(this);
+}
+
+MessageQueue::~MessageQueue() {
+  Clear(NULL);
+  if (new_ss)
+    delete ss_;
+  MessageQueueManager::Instance()->Remove(this);
+}
+
+void MessageQueue::set_socketserver(SocketServer* ss) {
+  if (new_ss)
+    delete ss_;
+  new_ss = false;
+  ss_ = ss;
+}
+
+void MessageQueue::Stop() {
+  fStop_ = true;
+  ss_->WakeUp();
+}
+
+bool MessageQueue::IsStopping() {
+  return fStop_;
+}
+
+void MessageQueue::Restart() {
+  fStop_ = false;
+}
+
+bool MessageQueue::Peek(Message *pmsg, int cmsWait) {
+  if (fStop_)
+    return false;
+  if (fPeekKeep_) {
+    *pmsg = msgPeek_;
+    return true;
+  }
+  if (!Get(pmsg, cmsWait))
+    return false;
+  msgPeek_ = *pmsg;
+  fPeekKeep_ = true;
+  return true;
+}
+
+bool MessageQueue::Get(Message *pmsg, int cmsWait) {
+  // Force stopping
+
+  if (fStop_)
+    return false;
+
+  // Return and clear peek if present
+  // Always return the peek if it exists so there is Peek/Get symmetry
+
+  if (fPeekKeep_) {
+    *pmsg = msgPeek_;
+    fPeekKeep_ = false;
+    return true;
+  }
+
+  // Get w/wait + timer scan / dispatch + socket / event multiplexer dispatch
+
+  int cmsTotal = cmsWait;
+  int cmsElapsed = 0;
+  uint32 msStart = GetMillisecondCount();
+  uint32 msCurrent = msStart;
+  while (!fStop_) {
+    // Check for sent messages
+
+    ReceiveSends();
+
+    // Check queues
+
+    int cmsDelayNext = -1;
+    {
+      CritScope cs(&crit_);
+
+      // Check for delayed messages that have been triggered
+      // Calc the next trigger too
+
+      while (!dmsgq_.empty()) {
+        if (msCurrent < dmsgq_.top().msTrigger_) {
+          cmsDelayNext = dmsgq_.top().msTrigger_ - msCurrent;
+          break;
+        }
+        msgq_.push(dmsgq_.top().msg_);
+        dmsgq_.pop();
+      }
+
+      // Check for posted events
+
+      if (!msgq_.empty()) {
+        *pmsg = msgq_.front();
+        msgq_.pop();
+        return true;
+      }
+    }
+
+    // Which is shorter, the delay wait or the asked wait?
+
+    int cmsNext;
+    if (cmsWait == -1) {
+      cmsNext = cmsDelayNext;
+    } else {
+      cmsNext = cmsTotal - cmsElapsed;
+      if (cmsNext < 0)
+        cmsNext = 0;
+      if (cmsDelayNext != -1 && cmsDelayNext < cmsNext)
+        cmsNext = cmsDelayNext;
+    }
+
+    // Wait and multiplex in the meantime
+    ss_->Wait(cmsNext, true);
+
+    // If the specified timeout expired, return
+
+    msCurrent = GetMillisecondCount();
+    cmsElapsed = msCurrent - msStart;
+    if (cmsWait != -1) {
+      if (cmsElapsed >= cmsWait)
+        return false;
+    }
+  }
+  return false;
+}
+
+void MessageQueue::ReceiveSends() {
+}
+
+void MessageQueue::Post(MessageHandler *phandler, uint32 id,
+    MessageData *pdata) {
+  // Keep thread safe
+  // Add the message to the end of the queue
+  // Signal for the multiplexer to return
+
+  CritScope cs(&crit_);
+  Message msg;
+  msg.phandler = phandler;
+  msg.message_id = id;
+  msg.pdata = pdata;
+  msgq_.push(msg);
+  ss_->WakeUp();
+}
+
+void MessageQueue::PostDelayed(int cmsDelay, MessageHandler *phandler,
+    uint32 id, MessageData *pdata) {
+  // Keep thread safe
+  // Add to the priority queue. Gets sorted soonest first.
+  // Signal for the multiplexer to return.
+
+  CritScope cs(&crit_);
+  Message msg;
+  msg.phandler = phandler;
+  msg.message_id = id;
+  msg.pdata = pdata;
+  dmsgq_.push(DelayedMessage(cmsDelay, &msg));
+  ss_->WakeUp();
+}
+
+int MessageQueue::GetDelay() {
+  CritScope cs(&crit_);
+
+  if (!msgq_.empty())
+    return 0;
+
+  if (!dmsgq_.empty()) {
+    int delay = dmsgq_.top().msTrigger_ - GetMillisecondCount();
+    if (delay < 0)
+      delay = 0;
+    return delay;
+  }
+
+  return -1;
+}
+
+void MessageQueue::Clear(MessageHandler *phandler, uint32 id) {
+  CritScope cs(&crit_);
+
+  // Remove messages with phandler
+
+  if (fPeekKeep_) {
+    if (phandler == NULL || msgPeek_.phandler == phandler) {
+      if (id == (uint32)-1 || msgPeek_.message_id == id) {
+        delete msgPeek_.pdata;
+        fPeekKeep_ = false;
+      }
+    }
+  }
+
+  // Remove from ordered message queue
+
+  size_t c = msgq_.size();
+  while (c-- != 0) {
+    Message msg = msgq_.front();
+    msgq_.pop();
+    if (phandler != NULL && msg.phandler != phandler) {
+      msgq_.push(msg);
+    } else {
+      if (id == (uint32)-1 || msg.message_id == id) {
+        delete msg.pdata;
+      } else {
+        msgq_.push(msg);
+      }
+    }
+  }
+
+  // Remove from priority queue. Not directly iterable, so use this approach
+
+  std::queue<DelayedMessage> dmsgs;
+  while (!dmsgq_.empty()) {
+    DelayedMessage dmsg = dmsgq_.top();
+    dmsgq_.pop();
+    if (phandler != NULL && dmsg.msg_.phandler != phandler) {
+      dmsgs.push(dmsg);
+    } else {
+      if (id == (uint32)-1 || dmsg.msg_.message_id == id) {
+        delete dmsg.msg_.pdata;
+      } else {
+        dmsgs.push(dmsg);
+      }
+    }
+  }
+  while (!dmsgs.empty()) {
+    dmsgq_.push(dmsgs.front());
+    dmsgs.pop();
+  }
+}
+
+void MessageQueue::Dispatch(Message *pmsg) {
+  pmsg->phandler->OnMessage(pmsg);
+}
+
+} // namespace cricket