В Wed, 8 Sep 2010 17:12:46 +0400 Konstantin Serebryany <[email protected]> пишет:
It still the same. gcc ./main.cpp -o main -g -pthread -D_REENTRANT -D_THREAD_SAFE -lpthread Regards, Ivan ==12972== Thread #1 is the program's root thread ==12972== ==12972== Thread #2 was created ==12972== at 0x41371F8: clone (in /lib/libc-2.12.1.so) ==12972== by 0x4054425: pthread_create@@GLIBC_2.1 (in /lib/libpthread-2.12.1.so) ==12972== by 0x40251E1: pthread_create_WRK (in /usr/lib/valgrind/vgpreload_helgrind-x86-linux.so) ==12972== by 0x80484D9: main (main.cpp:84) ==12972== ==12972== Possible data race during read of size 4 at 0xbecc119c by thread #1 ==12972== at 0x40251FD: pthread_create_WRK (in /usr/lib/valgrind/vgpreload_helgrind-x86-linux.so) ==12972== by 0x80484D9: main (main.cpp:84) ==12972== This conflicts with a previous write of size 4 by thread #2 ==12972== at 0x40252C9: mythread_wrapper (in /usr/lib/valgrind/vgpreload_helgrind-x86-linux.so) ==12972== by 0x4053E5F: start_thread (in /lib/libpthread-2.12.1.so) ==12972== by 0x413720D: clone (in /lib/libc-2.12.1.so) ==12972== tra-la-la > On Wed, Sep 8, 2010 at 5:02 PM, Ivan S. Lyapunov <[email protected]> > wrote: > > > Hello. > > > > I'm writed a simple pthreads program and can't understand Valgrind > > output because thre is no error in my case I think ;) > > > > #include <stdio.h> > > #include <stdlib.h> > > #include <unistd.h> > > #include <pthread.h> > > > > extern "C" { > > > > void * run_handle(void * param) { > > printf("tra-la-la\n"); > > return 0; > > } > > } > > > > int main(int argc, char** argv) { > > pthread_t t; > > pthread_create(&t, 0, run_handle, 0); > > > > sleep(10); > > return 0; > > } > > > > > > compile it > > gcc ./main.cpp -o main -pthread -D_REENTRANT -D_THREAD_SAFE > > -lpthread > > > > As the first step, try adding "-g" to the compile command. > > --kcc > >
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