https://svn.boost.org/trac10/ticket/8799 <p> The underlying snippet never catches the notify_all() signal. Operating System used is Linux 3.5.0-17-generic. </p> <p> Can anybody confirm this as a bug or am I doing something wrong? </p> <h3 class="section" id="Codesnippet">Code snippet</h3> <pre class="wiki">#include &lt;iostream&gt; #include &lt;boost/interprocess/sync/named_condition.hpp&gt; #include &lt;boost/interprocess/sync/named_mutex.hpp&gt; #include &lt;boost/interprocess/sync/scoped_lock.hpp&gt; #include &lt;boost/interprocess/shared_memory_object.hpp&gt; #include &lt;boost/interprocess/mapped_region.hpp&gt; #include &lt;boost/version.hpp&gt; #include &lt;sys/types.h&gt; #include &lt;sys/wait.h&gt; using namespace std; using namespace boost::interprocess; void* consumer(void*) { cout &lt;&lt; "Started child" &lt;&lt; endl; named_mutex mtx(create_only, "somemutex"); named_condition signal_empty (create_only, "signal_empty"); for(;;) { cout &lt;&lt; "Child tries to lock" &lt;&lt; endl; scoped_lock&lt;named_mutex&gt; lock(mtx); cout &lt;&lt; "Child got lock and waits" &lt;&lt; endl; signal_empty.wait(lock); cout &lt;&lt; "Child WOKE up" &lt;&lt; endl; } cout &lt;&lt; "Finished child" &lt;&lt; endl; } void* producer(void*) { cout &lt;&lt; "Started parent" &lt;&lt; endl; sleep(1); named_mutex mtx(open_only, "somemutex"); named_condition signal_empty (open_only, "signal_empty"); for(;;) { cout &lt;&lt; "Parent tries to get lock" &lt;&lt; endl; scoped_lock&lt;named_mutex&gt;lock(mtx); cout &lt;&lt; "Parent got lock and notifies" &lt;&lt; endl; sleep(1); cout &lt;&lt; "Parent notifies child" &lt;&lt; endl; signal_empty.notify_all(); } } int main(int argc, char** argv) { pid_t pid = fork(); if(pid == 0) { consumer(NULL); } else { producer(NULL); } } </pre><h3 class="section" id="Applicationoutput">Application output</h3> <pre class="wiki">Started parent Started child Child tries to lock Child got lock and waits Parent tries to get lock Parent got lock and notifies Parent notifies child Parent tries to get lock Parent got lock and notifies ..... </pre> en-us /htdocs/site/boost.png https://svn.boost.org/trac10/ticket/8799 Trac 1.4.3 Ion Gaztañaga Tue, 15 Oct 2013 20:26:56 GMT