Sure. Here's a very simple program that does nothing useful, but which
crashes consistently on a multi-processor machine.
Kind regards,
Alistair
#include
#include <iostream>
#include <string>
#include
const char* const reExpr("abcd(.*)");
const char* const replaceExpr("$1");
boost::regex re(reExpr);
size_t noThreads(50);
pthread_barrier_t barrier;
extern "C"
{
void* test_fn(void*)
{
pthread_barrier_wait(&barrier);
while(1)
{
std::string expr("abcdefgh");
std::cout << boost::regex_replace(expr, re, replaceExpr,
boost::match_default|boost::format_all) << std::endl;
}
return 0;
}
}
int main(int argc,char* argv[])
{
pthread_t* threads = new pthread_t[noThreads];
pthread_barrier_init(&barrier, NULL, noThreads);
size_t i = 0;
for (; i < noThreads; ++i)
{
if(pthread_create(&(threads[i]), NULL, test_fn, NULL))
{
std::cerr << "Error creating thread" << std::endl;
return 1;
}
}
for(i = 0; i < noThreads; ++i)
pthread_join(threads[i], NULL);
exit(0);
}
-----Original Message-----
From: boost-users-bounces@lists.boost.org
[mailto:boost-users-bounces@lists.boost.org] On Behalf Of John Maddock
Sent: 11 July 2006 10:02
To: boost-users@lists.boost.org
Subject: Re: [Boost-users] Seg faults when using
boost::regex_replaceinmultiple threads
mailinglist@kamba.net.nz wrote:
Does anyone know if there is a known problem with using these new
versions of boost::regex_replace in multiple threads? If it's
helpful, I have a very simple test program that demonstrates the
problem. Any help on this would be greatly appreciated.
If you can let me have the test program I can at least try and reproduce it.
I must admit to being at a loss to explain this otherwise: there really is
no thread sensitive code inside regex_replace.
John.
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