fix message posting to work from multiple threads

test/test_threads.cpp

@@ -0,0 +1,73 @@
+/*
+
+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 <boost/bind.hpp>
+#include <list>
+#include "libtorrent/thread.hpp"
+#include "test.hpp"
+
+using namespace libtorrent;
+
+void fun(condition* s, mutex* m, int i)
+{
+	fprintf(stderr, "thread %d waiting\n", i);
+	mutex::scoped_lock l(*m);
+	s->wait(l);
+	fprintf(stderr, "thread %d done\n", i);
+}
+
+int test_main()
+{
+	condition cond;
+	mutex m;
+	std::list<thread*> threads;
+	for (int i = 0; i < 20; ++i)
+	{
+		threads.push_back(new thread(boost::bind(&fun, &cond, &m, i)));
+	}
+
+	// make sure all threads are waiting on the condition
+	sleep(10);
+
+	mutex::scoped_lock l(m);
+	cond.signal_all(l);
+	l.unlock();
+
+	for (std::list<thread*>::iterator i = threads.begin(); i != threads.end(); ++i)
+	{
+		(*i)->join();
+		delete *i;
+	}
+
+	return 0;
+}
+