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-rw-r--r--nsprpub/pr/tests/rwlockrank.c122
1 files changed, 122 insertions, 0 deletions
diff --git a/nsprpub/pr/tests/rwlockrank.c b/nsprpub/pr/tests/rwlockrank.c
new file mode 100644
index 0000000000..d77eb9680a
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+++ b/nsprpub/pr/tests/rwlockrank.c
@@ -0,0 +1,122 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+/*
+ * RWLock rank tests
+ */
+
+#include "nspr.h"
+#include "plgetopt.h"
+
+static int _debug_on;
+static PRRWLock *rwlock0;
+static PRRWLock *rwlock1;
+static PRRWLock *rwlock2;
+
+static void rwtest(void *args)
+{
+ PR_RWLock_Rlock(rwlock1);
+ PR_RWLock_Unlock(rwlock1);
+
+ PR_RWLock_Rlock(rwlock1);
+ PR_RWLock_Unlock(rwlock1);
+
+ /* Test correct lock rank. */
+ PR_RWLock_Rlock(rwlock1);
+ PR_RWLock_Rlock(rwlock2);
+ PR_RWLock_Unlock(rwlock2);
+ PR_RWLock_Unlock(rwlock1);
+
+ PR_RWLock_Rlock(rwlock1);
+ PR_RWLock_Rlock(rwlock2);
+ PR_RWLock_Unlock(rwlock1);
+ PR_RWLock_Unlock(rwlock2);
+
+ PR_RWLock_Rlock(rwlock1);
+ PR_RWLock_Rlock(rwlock0);
+ PR_RWLock_Rlock(rwlock2);
+ PR_RWLock_Unlock(rwlock2);
+ PR_RWLock_Unlock(rwlock0);
+ PR_RWLock_Unlock(rwlock1);
+
+#if 0
+ /* Test incorrect lock rank. */
+ PR_RWLock_Rlock(rwlock2);
+ PR_RWLock_Rlock(rwlock1);
+ PR_RWLock_Unlock(rwlock1);
+ PR_RWLock_Unlock(rwlock2);
+
+ PR_RWLock_Rlock(rwlock2);
+ PR_RWLock_Rlock(rwlock0);
+ PR_RWLock_Rlock(rwlock1);
+ PR_RWLock_Unlock(rwlock1);
+ PR_RWLock_Unlock(rwlock0);
+ PR_RWLock_Unlock(rwlock2);
+#endif
+}
+
+int main(int argc, char **argv)
+{
+ PRStatus rc;
+ PRThread *thread;
+ PLOptStatus os;
+ PLOptState *opt = PL_CreateOptState(argc, argv, "d");
+
+ while (PL_OPT_EOL != (os = PL_GetNextOpt(opt))) {
+ if (PL_OPT_BAD == os) {
+ continue;
+ }
+ switch (opt->option) {
+ case 'd': /* debug mode */
+ _debug_on = 1;
+ break;
+ default:
+ break;
+ }
+ }
+ PL_DestroyOptState(opt);
+
+ rwlock0 = PR_NewRWLock(PR_RWLOCK_RANK_NONE, "Lock 0");
+ if (rwlock0 == NULL) {
+ fprintf(stderr, "PR_NewRWLock failed - error %d\n",
+ (int)PR_GetError());
+ return 1;
+ }
+ rwlock1 = PR_NewRWLock(1, "Lock 1");
+ if (rwlock1 == NULL) {
+ fprintf(stderr, "PR_NewRWLock failed - error %d\n",
+ (int)PR_GetError());
+ return 1;
+ }
+ rwlock2 = PR_NewRWLock(2, "Lock 2");
+ if (rwlock2 == NULL) {
+ fprintf(stderr, "PR_NewRWLock failed - error %d\n",
+ (int)PR_GetError());
+ return 1;
+ }
+
+ thread = PR_CreateThread(PR_USER_THREAD, rwtest, NULL, PR_PRIORITY_NORMAL,
+ PR_GLOBAL_THREAD, PR_JOINABLE_THREAD, 0);
+ if (thread == NULL) {
+ fprintf(stderr, "PR_CreateThread failed - error %d\n",
+ (int)PR_GetError());
+ PR_ProcessExit(2);
+ }
+ if (_debug_on) {
+ printf("%s: created thread = %p\n", argv[0], thread);
+ }
+
+ rc = PR_JoinThread(thread);
+ PR_ASSERT(rc == PR_SUCCESS);
+
+ PR_DestroyRWLock(rwlock0);
+ rwlock0 = NULL;
+ PR_DestroyRWLock(rwlock1);
+ rwlock1 = NULL;
+ PR_DestroyRWLock(rwlock2);
+ rwlock2 = NULL;
+
+ printf("PASS\n");
+ return 0;
+}