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/* Test whether detached threads are handled properly.
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Contributed by Bart Van Assche (bart.vanassche@gmail.com).
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#include "../drd_clientreq.h"
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static int s_finished_count;
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static pthread_mutex_t s_mutex;
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static void set_thread_name(const char* const fmt, const int arg)
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snprintf(name, sizeof(name), fmt, arg);
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name[sizeof(name) - 1] = 0;
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VALGRIND_DO_CLIENT_REQUEST(res, 0, VG_USERREQ__SET_THREAD_NAME,
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void increment_finished_count()
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pthread_mutex_lock(&s_mutex);
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pthread_mutex_unlock(&s_mutex);
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int get_finished_count()
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pthread_mutex_lock(&s_mutex);
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result = s_finished_count;
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pthread_mutex_unlock(&s_mutex);
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static void* thread_func1(void* arg)
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set_thread_name("thread_func1[%d]", *(int*)arg);
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write(STDOUT_FILENO, ".", 1);
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increment_finished_count();
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static void* thread_func2(void* arg)
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set_thread_name("thread_func2[%d]", *(int*)arg);
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pthread_detach(pthread_self());
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write(STDOUT_FILENO, ".", 1);
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increment_finished_count();
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int main(int argc, char** argv)
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const int count1 = argc > 1 ? atoi(argv[1]) : 100;
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const int count2 = argc > 2 ? atoi(argv[2]) : 100;
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int thread_arg[count1 > count2 ? count1 : count2];
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set_thread_name("main", 0);
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for (i = 0; i < count1 || i < count2; i++)
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pthread_mutex_init(&s_mutex, 0);
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pthread_attr_init(&attr);
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pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_DETACHED);
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assert(pthread_attr_getdetachstate(&attr, &detachstate) == 0);
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assert(detachstate == PTHREAD_CREATE_DETACHED);
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pthread_attr_setstacksize(&attr, 16384);
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// Create count1 detached threads by setting the "detached" property via
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for (i = 0; i < count1; i++)
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pthread_create(&thread, &attr, thread_func1, &thread_arg[i]);
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// Create count2 detached threads by letting the threads detach themselves.
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pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_JOINABLE);
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assert(pthread_attr_getdetachstate(&attr, &detachstate) == 0);
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assert(detachstate == PTHREAD_CREATE_JOINABLE);
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for (i = 0; i < count2; i++)
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pthread_create(&thread, &attr, thread_func2, &thread_arg[i]);
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pthread_attr_destroy(&attr);
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// Wait until all detached threads have written their output to stdout.
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while (get_finished_count() < count1 + count2)
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struct timespec delay = { 0, 1 * 1000 * 1000 };
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nanosleep(&delay, 0);
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pthread_mutex_destroy(&s_mutex);