85 lines
2.6 KiB
C
85 lines
2.6 KiB
C
#define _GNU_SOURCE
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#include <sys/types.h>
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#include <sys/syscall.h>
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#include <unistd.h>
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#include <pthread.h>
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#include <stdio.h>
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#include <linux/futex.h>
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#include "test.h"
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// ============================================================================
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// Test case
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// ============================================================================
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//
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// Three types of threads that will not exit voluntarily
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//
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// Type 1: a busy loop thread
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static void *busyloop_thread_func(void *_) {
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while (1) {
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// By calling getpid, we give the LibOS a chance to force the thread
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// to terminate if exit_group is called by any thread in a thread group
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getpid();
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}
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return NULL;
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}
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// Type 2: a sleeping thread
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//static void* sleeping_thread_func(void* _) {
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// unsigned int a_year_in_sec = 365 * 24 * 60 * 60;
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// sleep(a_year_in_sec);
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// return NULL;
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//}
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// Type 3: a thead that keeps waiting on a futex
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//static void* futex_wait_thread_func(void* _) {
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// // Wait on a futex forever
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// int my_private_futex = 0;
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// syscall(SYS_futex, &my_private_futex, FUTEX_WAIT, my_private_futex);
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// return NULL;
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//}
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// exit_group syscall should terminate all threads in a thread group.
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int test_exit_group_to_force_threads_terminate(void) {
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// Create three types of threads that will not exit voluntarily
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pthread_t busyloop_thread;
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if (pthread_create(&busyloop_thread, NULL, busyloop_thread_func, NULL) < 0) {
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printf("ERROR: pthread_create failed\n");
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return -1;
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}
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// Disable below two test cases, needs interrupt support
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// pthread_t sleeping_thread;
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// if (pthread_create(&sleeping_thread, NULL, sleeping_thread_func, NULL) < 0) {
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// printf("ERROR: pthread_create failed\n");
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// return -1;
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// }
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// pthread_t futex_wait_thread;
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// if (pthread_create(&futex_wait_thread, NULL, futex_wait_thread_func, NULL) < 0) {
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// printf("ERROR: pthread_create failed\n");
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// return -1;
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// }
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// Sleep for a while to make sure all three threads are running
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useconds_t _200ms = 200 * 1000;
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usleep(_200ms);
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// exit_group syscall will be called eventually by libc's exit, after the
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// main function returns. If Occlum can terminate normally, this means
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// exit_group syscall taking effect.
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return 0;
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}
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// ============================================================================
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// Test suite
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// ============================================================================
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static test_case_t test_cases[] = {
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TEST_CASE(test_exit_group_to_force_threads_terminate)
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};
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int main() {
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return test_suite_run(test_cases, ARRAY_SIZE(test_cases));
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}
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