forked from OSchip/llvm-project
59 lines
1.4 KiB
C
59 lines
1.4 KiB
C
#include <pthread.h>
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#include <mach/thread_act.h>
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#include <unistd.h>
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pthread_mutex_t suspend_mutex = PTHREAD_MUTEX_INITIALIZER;
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pthread_mutex_t signal_mutex = PTHREAD_MUTEX_INITIALIZER;
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pthread_cond_t signal_cond = PTHREAD_COND_INITIALIZER;
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int g_running_count = 0;
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int
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function_to_call() {
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return g_running_count;
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}
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void *
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suspend_func (void *unused) {
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pthread_setname_np("Look for me");
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pthread_cond_signal(&signal_cond);
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pthread_mutex_lock(&suspend_mutex);
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return NULL; // We allowed the suspend thread to run
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}
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void *
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running_func (void *input) {
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while (g_running_count < 10) {
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usleep (100);
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g_running_count++; // Break here to show we can handle breakpoints
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}
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return NULL;
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}
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int
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main()
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{
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pthread_t suspend_thread; // Stop here to get things going
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pthread_mutex_lock(&suspend_mutex);
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pthread_mutex_lock(&signal_mutex);
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pthread_create(&suspend_thread, NULL, suspend_func, NULL);
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pthread_cond_wait(&signal_cond, &signal_mutex);
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mach_port_t th_port = pthread_mach_thread_np(suspend_thread);
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thread_suspend(th_port);
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pthread_mutex_unlock(&suspend_mutex);
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pthread_t running_thread;
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pthread_create(&running_thread, NULL, running_func, NULL);
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pthread_join(running_thread, NULL);
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thread_resume(th_port); // Break here after thread_join
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pthread_join(suspend_thread, NULL);
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return 0; // Break here to make sure the thread exited normally
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}
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