fix message posting to work from multiple threads

2010-08-26 17:00:24 +00:00
parent d68719376f
commit 02668e8f75
13 changed files with 219 additions and 43 deletions
--- a/src/thread.cpp
+++ b/src/thread.cpp
@@ -0,0 +1,109 @@
+/*
+
+Copyright (c) 2010, Arvid Norberg
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions
+are met:
+
+    * Redistributions of source code must retain the above copyright
+      notice, this list of conditions and the following disclaimer.
+    * 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.
+    * Neither the name of the author 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 THE COPYRIGHT HOLDERS AND 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 THE COPYRIGHT OWNER OR 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 "libtorrent/thread.hpp"
+#include "libtorrent/assert.hpp"
+
+#ifdef TORRENT_BEOS
+#include <kernel/OS.h>
+#endif
+
+namespace libtorrent
+{
+	void sleep(int milliseconds)
+	{
+#if defined TORRENT_WINDOWS || defined TORRENT_CYGWIN
+		Sleep(milliseconds);
+#elif defined TORRENT_BEOS
+		snooze_until(system_time() + boost::int64_t(milliseconds) * 1000, B_SYSTEM_TIMEBASE);
+#else
+		usleep(milliseconds * 1000);
+#endif
+	}
+
+#ifdef BOOST_HAS_PTHREADS
+
+	condition::condition()
+	{
+		pthread_cond_init(&m_cond, 0);
+	}
+
+	condition::~condition()
+	{
+		pthread_cond_destroy(&m_cond);
+	}
+
+	void condition::wait(mutex::scoped_lock& l)
+	{
+		TORRENT_ASSERT(l.locked());
+		// wow, this is quite a hack
+		pthread_cond_wait(&m_cond, (::pthread_mutex_t*)&l.mutex());
+	}
+
+	void condition::signal_all(mutex::scoped_lock& l)
+	{
+		TORRENT_ASSERT(l.locked());
+		pthread_cond_broadcast(&m_cond);
+	}
+#elif defined TORRENT_WINDOWS || defined TORRENT_CYGWIN
+	condition::condition()
+		: m_num_waiters(0)
+	{
+		m_sem = CreateSemaphore(0, 0, INT_MAX, 0);
+	}
+
+	condition::~condition()
+	{
+		CloseHandle(m_sem);
+	}
+
+	void condition::wait(mutex::scoped_lock& l)
+	{
+		TORRENT_ASSERT(l.locked());
+		++m_num_waiters;
+		l.unlock();
+		WaitForSingleObject(m_sem, INFINITE);
+		l.lock();
+		--m_num_waiters;
+	}
+
+	void condition::signal_all(mutex::scoped_lock& l)
+	{
+		TORRENT_ASSERT(l.locked());
+		ReleaseSemaphore(m_sem, m_num_waiters, 0);
+	}
+#else
+#error not implemented
+#endif
+
+}
+