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author | Michele Calgaro <[email protected]> | 2020-12-09 14:11:22 +0900 |
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committer | Michele Calgaro <[email protected]> | 2020-12-09 14:11:22 +0900 |
commit | a06e2c2f225d76b67b0058a9880222f75d5495c3 (patch) | |
tree | 6afffac4dbc4eb2f25bdd2847d5b1105699dc772 /kopete/protocols/jabber/jingle/libjingle/talk/base/thread.cpp | |
parent | e19d155e7eb8fe8dee0b10b954b09396816733db (diff) | |
download | tdenetwork-a06e2c2f225d76b67b0058a9880222f75d5495c3.tar.gz tdenetwork-a06e2c2f225d76b67b0058a9880222f75d5495c3.zip |
Renaming of files in preparation for code style tools.
Signed-off-by: Michele Calgaro <[email protected]>
Diffstat (limited to 'kopete/protocols/jabber/jingle/libjingle/talk/base/thread.cpp')
-rw-r--r-- | kopete/protocols/jabber/jingle/libjingle/talk/base/thread.cpp | 274 |
1 files changed, 274 insertions, 0 deletions
diff --git a/kopete/protocols/jabber/jingle/libjingle/talk/base/thread.cpp b/kopete/protocols/jabber/jingle/libjingle/talk/base/thread.cpp new file mode 100644 index 00000000..b189e621 --- /dev/null +++ b/kopete/protocols/jabber/jingle/libjingle/talk/base/thread.cpp @@ -0,0 +1,274 @@ +/* + * 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. + */ + +#ifdef POSIX +extern "C" { +#include <sys/time.h> +} +#endif + +#include "talk/base/common.h" +#include "talk/base/logging.h" +#include "talk/base/thread.h" +#include "talk/base/jtime.h" + +namespace cricket { + +ThreadManager g_thmgr; + +#ifdef POSIX +pthread_key_t ThreadManager::key_; + +ThreadManager::ThreadManager() { + pthread_key_create(&key_, NULL); + main_thread_ = new Thread(); + SetCurrent(main_thread_); +} + +ThreadManager::~ThreadManager() { + pthread_key_delete(key_); + delete main_thread_; +} + +Thread *ThreadManager::CurrentThread() { + return (Thread *)pthread_getspecific(key_); +} + +void ThreadManager::SetCurrent(Thread *thread) { + pthread_setspecific(key_, thread); +} +#endif + +#ifdef WIN32 +DWORD ThreadManager::key_; + +ThreadManager::ThreadManager() { + key_ = TlsAlloc(); + main_thread_ = new Thread(); + SetCurrent(main_thread_); +} + +ThreadManager::~ThreadManager() { + TlsFree(key_); + delete main_thread_; +} + +Thread *ThreadManager::CurrentThread() { + return (Thread *)TlsGetValue(key_); +} + +void ThreadManager::SetCurrent(Thread *thread) { + TlsSetValue(key_, thread); +} +#endif + +void ThreadManager::Add(Thread *thread) { + CritScope cs(&crit_); + threads_.push_back(thread); +} + +void ThreadManager::Remove(Thread *thread) { + CritScope cs(&crit_); + threads_.erase(std::remove(threads_.begin(), threads_.end(), thread), threads_.end()); +} + +Thread::Thread(SocketServer* ss) : MessageQueue(ss) { + g_thmgr.Add(this); + started_ = false; + has_sends_ = false; +} + +Thread::~Thread() { + Stop(); + Clear(NULL); + g_thmgr.Remove(this); +} + +#ifdef POSIX +void Thread::Start() { + pthread_attr_t attr; + pthread_attr_init(&attr); + pthread_create(&thread_, &attr, PreLoop, this); + pthread_attr_destroy(&attr); + started_ = true; +} + +void Thread::Join() { + if (started_) { + void *pv; + pthread_join(thread_, &pv); + } +} +#endif + +#ifdef WIN32 +void Thread::Start() { + thread_ = CreateThread(NULL, 0, (LPTHREAD_START_ROUTINE)PreLoop, this, 0, NULL); + started_ = true; +} + +void Thread::Join() { + if (started_) { + WaitForSingleObject(thread_, INFINITE); + CloseHandle(thread_); + started_ = false; + } +} +#endif + +void *Thread::PreLoop(void *pv) { + Thread *thread = (Thread *)pv; + ThreadManager::SetCurrent(thread); + thread->Loop(); + return NULL; +} + +void Thread::Loop(int cmsLoop) { + uint32 msEnd; + if (cmsLoop != -1) + msEnd = GetMillisecondCount() + cmsLoop; + int cmsNext = cmsLoop; + + while (true) { + Message msg; + if (!Get(&msg, cmsNext)) + return; + Dispatch(&msg); + + if (cmsLoop != -1) { + uint32 msCur = GetMillisecondCount(); + if (msCur >= msEnd) + return; + cmsNext = msEnd - msCur; + } + } +} + +void Thread::Stop() { + MessageQueue::Stop(); + Join(); +} + +void Thread::Send(MessageHandler *phandler, uint32 id, MessageData *pdata) { + // Sent messages are sent to the MessageHandler directly, in the context + // of "thread", like Win32 SendMessage. If in the right context, + // call the handler directly. + + Message msg; + msg.phandler = phandler; + msg.message_id = id; + msg.pdata = pdata; + if (IsCurrent()) { + phandler->OnMessage(&msg); + return; + } + + AutoThread thread; + Thread *current_thread = Thread::Current(); + ASSERT(current_thread != NULL); // AutoThread ensures this + + crit_.Enter(); + bool ready = false; + _SendMessage smsg; + smsg.thread = current_thread; + smsg.msg = msg; + smsg.ready = &ready; + sendlist_.push_back(smsg); + has_sends_ = true; + crit_.Leave(); + + // Wait for a reply + + ss_->WakeUp(); + while (!ready) { + current_thread->ReceiveSends(); + current_thread->socketserver()->Wait(-1, false); + } +} + +void Thread::ReceiveSends() { + // Before entering critical section, check boolean. + + if (!has_sends_) + return; + + // Receive a sent message. Cleanup scenarios: + // - thread sending exits: We don't allow this, since thread can exit + // only via Join, so Send must complete. + // - thread receiving exits: Wakeup/set ready in Thread::Clear() + // - object target cleared: Wakeup/set ready in Thread::Clear() + crit_.Enter(); + while (!sendlist_.empty()) { + _SendMessage smsg = sendlist_.front(); + sendlist_.pop_front(); + crit_.Leave(); + smsg.msg.phandler->OnMessage(&smsg.msg); + crit_.Enter(); + *smsg.ready = true; + smsg.thread->socketserver()->WakeUp(); + } + has_sends_ = false; + crit_.Leave(); +} + +void Thread::Clear(MessageHandler *phandler, uint32 id) { + CritScope cs(&crit_); + + // Remove messages on sendlist_ with phandler + // Object target cleared: remove from send list, wakeup/set ready + // if sender not NULL. + + std::list<_SendMessage>::iterator iter = sendlist_.begin(); + while (iter != sendlist_.end()) { + _SendMessage smsg = *iter; + if (phandler == NULL || smsg.msg.phandler == phandler) { + if (id == (uint32)-1 || smsg.msg.message_id == id) { + iter = sendlist_.erase(iter); + *smsg.ready = true; + smsg.thread->socketserver()->WakeUp(); + continue; + } + } + ++iter; + } + + MessageQueue::Clear(phandler, id); +} + +AutoThread::AutoThread(SocketServer* ss) : Thread(ss) { + if (!ThreadManager::CurrentThread()) { + ThreadManager::SetCurrent(this); + } +} + +AutoThread::~AutoThread() { + if (ThreadManager::CurrentThread() == this) { + ThreadManager::SetCurrent(NULL); + } +} + +} // namespace cricket |