Add semaphore tests, fix sem_destroy.
Bug: https://code.google.com/p/android/issues/detail?id=76088
Change-Id: I4a0561b23e90312384d40a1c804ca64ee98f4066
diff --git a/tests/Android.mk b/tests/Android.mk
index 890e203..59fe57d 100644
--- a/tests/Android.mk
+++ b/tests/Android.mk
@@ -86,6 +86,7 @@
regex_test.cpp \
sched_test.cpp \
search_test.cpp \
+ semaphore_test.cpp \
signal_test.cpp \
stack_protector_test.cpp \
stdatomic_test.cpp \
diff --git a/tests/semaphore_test.cpp b/tests/semaphore_test.cpp
new file mode 100644
index 0000000..e517f81
--- /dev/null
+++ b/tests/semaphore_test.cpp
@@ -0,0 +1,143 @@
+/*
+ * Copyright (C) 2014 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <semaphore.h>
+
+#include <errno.h>
+#include <gtest/gtest.h>
+#include <limits.h>
+#include <pthread.h>
+#include <time.h>
+#include <unistd.h>
+
+#include "private/bionic_constants.h"
+
+TEST(semaphore, sem_init) {
+ sem_t s;
+
+ // Perfectly fine initial values.
+ ASSERT_EQ(0, sem_init(&s, 0, 0));
+ ASSERT_EQ(0, sem_init(&s, 0, 1));
+ ASSERT_EQ(0, sem_init(&s, 0, 123));
+
+ // Too small an initial value.
+ errno = 0;
+ ASSERT_EQ(-1, sem_init(&s, 0, -1));
+ ASSERT_EQ(EINVAL, errno);
+
+ ASSERT_EQ(SEM_VALUE_MAX, sysconf(_SC_SEM_VALUE_MAX));
+
+ // The largest initial value.
+ ASSERT_EQ(0, sem_init(&s, 0, SEM_VALUE_MAX));
+
+ // Too large an initial value.
+ errno = 0;
+ ASSERT_EQ(-1, sem_init(&s, 0, SEM_VALUE_MAX + 1));
+ ASSERT_EQ(EINVAL, errno);
+
+ ASSERT_EQ(0, sem_destroy(&s));
+}
+
+TEST(semaphore, sem_trywait) {
+ sem_t s;
+ ASSERT_EQ(0, sem_init(&s, 0, 3));
+ ASSERT_EQ(0, sem_trywait(&s));
+ ASSERT_EQ(0, sem_trywait(&s));
+ ASSERT_EQ(0, sem_trywait(&s));
+ errno = 0;
+ ASSERT_EQ(-1, sem_trywait(&s));
+ ASSERT_EQ(EAGAIN, errno);
+ ASSERT_EQ(0, sem_destroy(&s));
+}
+
+static void SemWaitThreadTestFn(sem_t& sem) {
+ ASSERT_EQ(0, sem_wait(&sem));
+}
+
+static void* SemWaitThreadFn(void* arg) {
+ SemWaitThreadTestFn(*reinterpret_cast<sem_t*>(arg));
+ return nullptr;
+}
+
+TEST(semaphore, sem_wait__sem_post) {
+ sem_t s;
+ ASSERT_EQ(0, sem_init(&s, 0, 0));
+
+ pthread_t t1, t2, t3;
+ ASSERT_EQ(0, pthread_create(&t1, NULL, SemWaitThreadFn, &s));
+ ASSERT_EQ(0, pthread_create(&t2, NULL, SemWaitThreadFn, &s));
+ ASSERT_EQ(0, pthread_create(&t3, NULL, SemWaitThreadFn, &s));
+
+ ASSERT_EQ(0, sem_post(&s));
+ ASSERT_EQ(0, sem_post(&s));
+ ASSERT_EQ(0, sem_post(&s));
+
+ void* result;
+ ASSERT_EQ(0, pthread_join(t1, &result));
+ ASSERT_EQ(0, pthread_join(t2, &result));
+ ASSERT_EQ(0, pthread_join(t3, &result));
+}
+
+static inline void timespec_add_ms(timespec& ts, size_t ms) {
+ ts.tv_sec += ms / 1000;
+ ts.tv_nsec += (ms % 1000) * 1000000;
+ if (ts.tv_nsec >= NS_PER_S) {
+ ts.tv_sec++;
+ ts.tv_nsec -= NS_PER_S;
+ }
+}
+
+TEST(semaphore, sem_timedwait) {
+ sem_t s;
+ ASSERT_EQ(0, sem_init(&s, 0, 0));
+
+ timespec ts;
+ ASSERT_EQ(0, clock_gettime(CLOCK_REALTIME, &ts));
+ timespec_add_ms(ts, 100);
+
+ errno = 0;
+ ASSERT_EQ(-1, sem_timedwait(&s, &ts));
+ ASSERT_EQ(ETIMEDOUT, errno);
+
+ // A negative timeout is an error.
+ errno = 0;
+ ts.tv_nsec = -1;
+ ASSERT_EQ(-1, sem_timedwait(&s, &ts));
+ ASSERT_EQ(EINVAL, errno);
+
+ ASSERT_EQ(0, sem_destroy(&s));
+}
+
+TEST(semaphore, sem_getvalue) {
+ sem_t s;
+ ASSERT_EQ(0, sem_init(&s, 0, 0));
+
+ int i;
+ ASSERT_EQ(0, sem_getvalue(&s, &i));
+ ASSERT_EQ(0, i);
+
+ ASSERT_EQ(0, sem_post(&s));
+ ASSERT_EQ(0, sem_getvalue(&s, &i));
+ ASSERT_EQ(1, i);
+
+ ASSERT_EQ(0, sem_post(&s));
+ ASSERT_EQ(0, sem_getvalue(&s, &i));
+ ASSERT_EQ(2, i);
+
+ ASSERT_EQ(0, sem_wait(&s));
+ ASSERT_EQ(0, sem_getvalue(&s, &i));
+ ASSERT_EQ(1, i);
+}
diff --git a/tests/time_test.cpp b/tests/time_test.cpp
index c9ead8d..c631b6a 100644
--- a/tests/time_test.cpp
+++ b/tests/time_test.cpp
@@ -26,6 +26,8 @@
#include "ScopedSignalHandler.h"
+#include "private/bionic_constants.h"
+
TEST(time, gmtime) {
time_t t = 0;
tm* broken_down = gmtime(&t);
@@ -395,7 +397,7 @@
ts2.tv_nsec -= ts1.tv_nsec;
if (ts2.tv_nsec < 0) {
--ts2.tv_sec;
- ts2.tv_nsec += 1000000000;
+ ts2.tv_nsec += NS_PER_S;
}
// Should be less than (a very generous, to try to avoid flakiness) 1000000ns.