libpthread-454.40.3.tar.gz

[apple/libpthread.git] / tests / pthread_threadid_np.c

diff --git a/tests/pthread_threadid_np.c b/tests/pthread_threadid_np.c
index d28ca65e7e52d6257ad704046b6c886b7aa2a90c..9529f2633a1556b71ea39e4b62e88916e0e00767 100644 (file)
--- a/tests/pthread_threadid_np.c
+++ b/tests/pthread_threadid_np.c
@@ -1,15 +1,17 @@
 #include <pthread.h>
 #include <pthread/private.h>
 #include <dispatch/dispatch.h>
+#include <sys/wait.h>
+#include <stdlib.h>
 
 #include "darwintest_defaults.h"
 
 extern __uint64_t __thread_selfid( void );
 
-static void *do_test(void * __unused arg)
+static void *do_test(void * arg)
 {
        uint64_t threadid = __thread_selfid();
-       T_ASSERT_NOTNULL(threadid, NULL);
+       T_ASSERT_NE(threadid, (uint64_t)0, "__thread_selfid()");
 
        uint64_t pth_threadid = 0;
        T_ASSERT_POSIX_ZERO(pthread_threadid_np(NULL, &pth_threadid), NULL);
@@ -19,6 +21,9 @@ static void *do_test(void * __unused arg)
        pth_threadid = _pthread_threadid_self_np_direct();
        T_EXPECT_EQ(threadid, pth_threadid, "pthread_threadid_np_direct()");
 
+       if (arg) {
+               *(uint64_t *)arg = pth_threadid;
+       }
        return NULL;
 }
 
@@ -29,9 +34,14 @@ T_DECL(pthread_threadid_np, "pthread_threadid_np",
        do_test(NULL);
 
        T_LOG("Pthread");
-       pthread_t pth;
-       T_ASSERT_POSIX_ZERO(pthread_create(&pth, NULL, do_test, NULL), NULL);
-       T_ASSERT_POSIX_ZERO(pthread_join(pth, NULL), NULL);
+       for (int i = 0; i < 100; i++) {
+               uint64_t tid1 = 0, tid2 = 0;
+               pthread_t pth;
+               T_ASSERT_POSIX_ZERO(pthread_create(&pth, NULL, do_test, &tid1), NULL);
+               T_EXPECT_POSIX_ZERO(pthread_threadid_np(pth, &tid2), NULL);
+               T_ASSERT_POSIX_ZERO(pthread_join(pth, NULL), NULL);
+               T_EXPECT_EQ(tid1, tid2, "parent and child agree");
+       }
 
        T_LOG("Workqueue Thread");
        dispatch_queue_t dq = dispatch_queue_create("myqueue", NULL);
@@ -42,3 +52,41 @@ T_DECL(pthread_threadid_np, "pthread_threadid_np",
        dispatch_async(dq, ^{ do_test(NULL); });
        dispatch_sync(dq, ^{});
 }
+
+T_DECL(pthread_threadid_fork, "pthread_threadid_np post-fork test")
+{
+       uint64_t tid = __thread_selfid();
+       T_ASSERT_NE(tid, (uint64_t)0, "__thread_selfid()");
+
+       uint64_t ptid = 0;
+       T_ASSERT_POSIX_ZERO(pthread_threadid_np(NULL, &ptid), NULL);
+       T_ASSERT_EQ(ptid, tid, NULL);
+
+       pid_t pid = fork();
+       if (pid == 0) {
+               // child
+               uint64_t ntid = __thread_selfid();
+               if (ntid == tid) {
+                       T_LOG("FAIL: forked child tid is equal to parent tid");
+                       exit(1);
+               }
+
+               uint64_t nptid = 0;
+               if (pthread_threadid_np(NULL, &nptid) != 0) {
+                       T_LOG("FAIL: pthread_threadid_np: %d", errno);
+                       exit(1);
+               }
+
+               if (nptid != ntid) {
+                       T_LOG("FAIL: pthread_threadid_np == tid (expected: %lld == %lld)",
+                                       nptid, ntid);
+                       exit(1);
+               }
+               exit(0);
+       } else {
+               int status;
+               T_ASSERT_EQ(waitpid(pid, &status, 0), pid, NULL);
+               int exitstatus = WEXITSTATUS(status);
+               T_ASSERT_EQ(exitstatus, 0, NULL);
+       }
+}