1 files changed, 248 insertions, 0 deletions
diff --git a/Source/JavaScriptCore/wtf/gtk/ThreadingGtk.cpp b/Source/JavaScriptCore/wtf/gtk/ThreadingGtk.cpp
new file mode 100644
index 0000000..863ee81
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+++ b/Source/JavaScriptCore/wtf/gtk/ThreadingGtk.cpp
@@ -0,0 +1,248 @@
+/*
+ * Copyright (C) 2007, 2008 Apple Inc. All rights reserved.
+ * Copyright (C) 2007 Justin Haygood (jhaygood@reaktix.com)
+ *
+ * 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.  Neither the name of Apple Inc. ("Apple") nor the names of
+ *     its contributors may be used to endorse or promote products derived
+ *     from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "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 APPLE OR ITS CONTRIBUTORS 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.
+ */
+
+#include "config.h"
+#include "Threading.h"
+
+#if !USE(PTHREADS)
+
+#include "CurrentTime.h"
+#include "HashMap.h"
+#include "MainThread.h"
+#include "RandomNumberSeed.h"
+#include <wtf/StdLibExtras.h>
+
+#include <glib.h>
+#include <limits.h>
+
+namespace WTF {
+
+typedef HashMap<ThreadIdentifier, GThread*> ThreadMap;
+
+static Mutex* atomicallyInitializedStaticMutex;
+
+static Mutex& threadMapMutex()
+{
+    DEFINE_STATIC_LOCAL(Mutex, mutex, ());
+    return mutex;
+}
+
+void initializeThreading()
+{
+    if (!g_thread_supported())
+        g_thread_init(NULL);
+    ASSERT(g_thread_supported());
+
+    if (!atomicallyInitializedStaticMutex) {
+        atomicallyInitializedStaticMutex = new Mutex;
+        threadMapMutex();
+        initializeRandomNumberGenerator();
+    }
+}
+
+void lockAtomicallyInitializedStaticMutex()
+{
+    ASSERT(atomicallyInitializedStaticMutex);
+    atomicallyInitializedStaticMutex->lock();
+}
+
+void unlockAtomicallyInitializedStaticMutex()
+{
+    atomicallyInitializedStaticMutex->unlock();
+}
+
+static ThreadMap& threadMap()
+{
+    DEFINE_STATIC_LOCAL(ThreadMap, map, ());
+    return map;
+}
+
+static ThreadIdentifier identifierByGthreadHandle(GThread*& thread)
+{
+    MutexLocker locker(threadMapMutex());
+
+    ThreadMap::iterator i = threadMap().begin();
+    for (; i != threadMap().end(); ++i) {
+        if (i->second == thread)
+            return i->first;
+    }
+
+    return 0;
+}
+
+static ThreadIdentifier establishIdentifierForThread(GThread*& thread)
+{
+    ASSERT(!identifierByGthreadHandle(thread));
+
+    MutexLocker locker(threadMapMutex());
+
+    static ThreadIdentifier identifierCount = 1;
+
+    threadMap().add(identifierCount, thread);
+
+    return identifierCount++;
+}
+
+static GThread* threadForIdentifier(ThreadIdentifier id)
+{
+    MutexLocker locker(threadMapMutex());
+
+    return threadMap().get(id);
+}
+
+static void clearThreadForIdentifier(ThreadIdentifier id)
+{
+    MutexLocker locker(threadMapMutex());
+
+    ASSERT(threadMap().contains(id));
+
+    threadMap().remove(id);
+}
+
+ThreadIdentifier createThreadInternal(ThreadFunction entryPoint, void* data, const char*)
+{
+    GThread* thread;
+    if (!(thread = g_thread_create(entryPoint, data, TRUE, 0))) {
+        LOG_ERROR("Failed to create thread at entry point %p with data %p", entryPoint, data);
+        return 0;
+    }
+
+    ThreadIdentifier threadID = establishIdentifierForThread(thread);
+    return threadID;
+}
+
+void initializeCurrentThreadInternal(const char*)
+{
+}
+
+int waitForThreadCompletion(ThreadIdentifier threadID, void** result)
+{
+    ASSERT(threadID);
+
+    GThread* thread = threadForIdentifier(threadID);
+
+    void* joinResult = g_thread_join(thread);
+    if (result)
+        *result = joinResult;
+
+    clearThreadForIdentifier(threadID);
+    return 0;
+}
+
+void detachThread(ThreadIdentifier)
+{
+}
+
+ThreadIdentifier currentThread()
+{
+    GThread* currentThread = g_thread_self();
+    if (ThreadIdentifier id = identifierByGthreadHandle(currentThread))
+        return id;
+    return establishIdentifierForThread(currentThread);
+}
+
+void yield()
+{
+    g_thread_yield();
+}
+
+Mutex::Mutex()
+    : m_mutex(g_mutex_new())
+{
+}
+
+Mutex::~Mutex()
+{
+}
+
+void Mutex::lock()
+{
+    g_mutex_lock(m_mutex.get());
+}
+
+bool Mutex::tryLock()
+{
+    return g_mutex_trylock(m_mutex.get());
+}
+
+void Mutex::unlock()
+{
+    g_mutex_unlock(m_mutex.get());
+}
+
+ThreadCondition::ThreadCondition()
+    : m_condition(g_cond_new())
+{
+}
+
+ThreadCondition::~ThreadCondition()
+{
+}
+
+void ThreadCondition::wait(Mutex& mutex)
+{
+    g_cond_wait(m_condition.get(), mutex.impl().get());
+}
+
+bool ThreadCondition::timedWait(Mutex& mutex, double absoluteTime)
+{
+    // Time is in the past - return right away.
+    if (absoluteTime < currentTime())
+        return false;
+    
+    // Time is too far in the future for g_cond_timed_wait - wait forever.
+    if (absoluteTime > INT_MAX) {
+        wait(mutex);
+        return true;
+    }
+
+    int timeSeconds = static_cast<int>(absoluteTime);
+    int timeMicroseconds = static_cast<int>((absoluteTime - timeSeconds) * 1000000.0);
+    
+    GTimeVal targetTime;
+    targetTime.tv_sec = timeSeconds;
+    targetTime.tv_usec = timeMicroseconds;
+
+    return g_cond_timed_wait(m_condition.get(), mutex.impl().get(), &targetTime);
+}
+
+void ThreadCondition::signal()
+{
+    g_cond_signal(m_condition.get());
+}
+
+void ThreadCondition::broadcast()
+{
+    g_cond_broadcast(m_condition.get());
+}
+
+
+}
+
+#endif // !USE(PTHREADS)