tests/pthread_threadid_np.c

   1 #include <pthread.h>
   2 #include <pthread/private.h>
   3 #include <dispatch/dispatch.h>
   4 #include <sys/wait.h>
   5 #include <stdlib.h>
   6
   7 #include "darwintest_defaults.h"
   8
   9 extern __uint64_t __thread_selfid( void );
  10
  11 static void *do_test(void * __unused arg)
  12 {
  13         uint64_t threadid = __thread_selfid();
  14         T_ASSERT_NE(threadid, (uint64_t)0, "__thread_selfid()");
  15
  16         uint64_t pth_threadid = 0;
  17         T_ASSERT_POSIX_ZERO(pthread_threadid_np(NULL, &pth_threadid), NULL);
  18         T_ASSERT_POSIX_ZERO(pthread_threadid_np(pthread_self(), &pth_threadid), NULL);
  19         T_EXPECT_EQ(threadid, pth_threadid, "pthread_threadid_np()");
  20
  21         pth_threadid = _pthread_threadid_self_np_direct();
  22         T_EXPECT_EQ(threadid, pth_threadid, "pthread_threadid_np_direct()");
  23
  24         return NULL;
  25 }
  26
  27 T_DECL(pthread_threadid_np, "pthread_threadid_np",
  28            T_META_ALL_VALID_ARCHS(YES))
  29 {
  30         T_LOG("Main Thread");
  31         do_test(NULL);
  32
  33         T_LOG("Pthread");
  34         pthread_t pth;
  35         T_ASSERT_POSIX_ZERO(pthread_create(&pth, NULL, do_test, NULL), NULL);
  36         T_ASSERT_POSIX_ZERO(pthread_join(pth, NULL), NULL);
  37
  38         T_LOG("Workqueue Thread");
  39         dispatch_queue_t dq = dispatch_queue_create("myqueue", NULL);
  40         dispatch_async(dq, ^{ do_test(NULL); });
  41         dispatch_sync(dq, ^{});
  42
  43         T_LOG("Workqueue Thread Reuse");
  44         dispatch_async(dq, ^{ do_test(NULL); });
  45         dispatch_sync(dq, ^{});
  46 }
  47
  48 T_DECL(pthread_threadid_fork, "pthread_threadid_np post-fork test")
  49 {
  50         uint64_t tid = __thread_selfid();
  51         T_ASSERT_NE(tid, (uint64_t)0, "__thread_selfid()");
  52
  53         uint64_t ptid = 0;
  54         T_ASSERT_POSIX_ZERO(pthread_threadid_np(NULL, &ptid), NULL);
  55         T_ASSERT_EQ(ptid, tid, NULL);
  56
  57         pid_t pid = fork();
  58         if (pid == 0) {
  59                 // child
  60                 uint64_t ntid = __thread_selfid();
  61                 if (ntid == tid) {
  62                         T_LOG("FAIL: forked child tid is equal to parent tid");
  63                         exit(1);
  64                 }
  65
  66                 uint64_t nptid = 0;
  67                 if (pthread_threadid_np(NULL, &nptid) != 0) {
  68                         T_LOG("FAIL: pthread_threadid_np: %d", errno);
  69                         exit(1);
  70                 }
  71
  72                 if (nptid != ntid) {
  73                         T_LOG("FAIL: pthread_threadid_np == tid (expected: %lld == %lld)",
  74                                         nptid, ntid);
  75                         exit(1);
  76                 }
  77                 exit(0);
  78         } else {
  79                 int status;
  80                 T_ASSERT_EQ(waitpid(pid, &status, 0), pid, NULL);
  81                 int exitstatus = WEXITSTATUS(status);
  82                 T_ASSERT_EQ(exitstatus, 0, NULL);
  83         }
  84 }