Subject: [Boost-bugs] [Boost C++ Libraries] #4078: interrupt()ion of threads in timed_wait() of a condition variable has unexpected side effects
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2010-04-08 17:54:51
#4078: interrupt()ion of threads in timed_wait() of a condition variable has
unexpected side effects
---------------------------------------------+------------------------------
Reporter: Sebastian Kienzl <seb@â¦> | Owner: anthonyw
Type: Bugs | Status: new
Milestone: Boost 1.43.0 | Component: thread
Version: Boost 1.39.0 | Severity: Problem
Keywords: |
---------------------------------------------+------------------------------
If multiple threads are waiting on a condition variable with timed_wait()
then interrupt()ing one them makes timed_wait() return {{{true}}} in
another thread. Happens under Linux, not tested under Windows.
I haven't tested it with version later than 1.39.0 but couldn't find a
ticket reporting that bug or any mention of it in the changelog.
{{{
#include <boost/thread.hpp>
#include <boost/thread/mutex.hpp>
#include <boost/thread/condition_variable.hpp>
#include <iostream>
using namespace std;
using namespace boost;
condition_variable cv;
mutex mut;
void test_thread( const char* name )
{
try {
mutex::scoped_lock lock( mut );
cout << name << " timed_wait: " <<
cv.timed_wait( lock, posix_time::time_duration( 0,
20, 0 ) ) << endl;
}
catch( thread_interrupted& ) {
cout << name << " interrupted" << endl;
}
}
int main()
{
thread thread1( test_thread, "1" );
thread thread2( test_thread, "2" );
sleep( 1 );
cout << "intr 1" << endl;
thread1.interrupt();
sleep( 1 );
cout << "intr 2" << endl;
thread2.interrupt();
sleep( 1 );
thread1.join();
thread2.join();
return 0;
}
}}}
-- Ticket URL: <https://svn.boost.org/trac/boost/ticket/4078> Boost C++ Libraries <http://www.boost.org/> Boost provides free peer-reviewed portable C++ source libraries.
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