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/* Test whether detached threads are handled properly.
Contributed by Bart Van Assche (bart.vanassche@gmail.com).
*/
#include <assert.h>
#include <pthread.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include "../drd_clientreq.h"
static int s_finished_count;
static pthread_mutex_t s_mutex;
static void set_thread_name(const char* const fmt, const int arg)
{
int res;
char name[32];
snprintf(name, sizeof(name), fmt, arg);
name[sizeof(name) - 1] = 0;
VALGRIND_DO_CLIENT_REQUEST(res, 0, VG_USERREQ__SET_THREAD_NAME,
name, 0, 0, 0, 0);
}
void increment_finished_count()
{
pthread_mutex_lock(&s_mutex);
s_finished_count++;
pthread_mutex_unlock(&s_mutex);
}
int get_finished_count()
{
int result;
pthread_mutex_lock(&s_mutex);
result = s_finished_count;
pthread_mutex_unlock(&s_mutex);
return result;
}
static void* thread_func1(void* arg)
{
set_thread_name("thread_func1[%d]", *(int*)arg);
write(STDOUT_FILENO, ".", 1);
increment_finished_count();
return 0;
}
static void* thread_func2(void* arg)
{
set_thread_name("thread_func2[%d]", *(int*)arg);
pthread_detach(pthread_self());
write(STDOUT_FILENO, ".", 1);
increment_finished_count();
return 0;
}
int main(int argc, char** argv)
{
const int count1 = argc > 1 ? atoi(argv[1]) : 100;
const int count2 = argc > 2 ? atoi(argv[2]) : 100;
int thread_arg[count1 > count2 ? count1 : count2];
int i;
int detachstate;
pthread_attr_t attr;
set_thread_name("main", 0);
for (i = 0; i < count1 || i < count2; i++)
thread_arg[i] = i;
pthread_mutex_init(&s_mutex, 0);
pthread_attr_init(&attr);
pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_DETACHED);
assert(pthread_attr_getdetachstate(&attr, &detachstate) == 0);
assert(detachstate == PTHREAD_CREATE_DETACHED);
pthread_attr_setstacksize(&attr, 16384);
// Create count1 detached threads by setting the "detached" property via
// thread attributes.
for (i = 0; i < count1; i++)
{
pthread_t thread;
pthread_create(&thread, &attr, thread_func1, &thread_arg[i]);
}
// Create count2 detached threads by letting the threads detach themselves.
pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_JOINABLE);
assert(pthread_attr_getdetachstate(&attr, &detachstate) == 0);
assert(detachstate == PTHREAD_CREATE_JOINABLE);
for (i = 0; i < count2; i++)
{
pthread_t thread;
pthread_create(&thread, &attr, thread_func2, &thread_arg[i]);
}
pthread_attr_destroy(&attr);
// Wait until all detached threads have written their output to stdout.
while (get_finished_count() < count1 + count2)
{
struct timespec delay = { 0, 1 * 1000 * 1000 };
nanosleep(&delay, 0);
}
printf("\n");
pthread_mutex_destroy(&s_mutex);
return 0;
}
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