--- /dev/null
+/* Copyright (c) 2015, Google Inc.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#include "internal.h"
+
+#include <gtest/gtest.h>
+
+#include <openssl/crypto.h>
+#include <openssl/rand.h>
+
+#include "test/test_util.h"
+
+
+#if !defined(OPENSSL_NO_THREADS)
+
+#if defined(OPENSSL_WINDOWS)
+
+OPENSSL_MSVC_PRAGMA(warning(push, 3))
+#include <windows.h>
+OPENSSL_MSVC_PRAGMA(warning(pop))
+
+typedef HANDLE thread_t;
+
+static DWORD WINAPI thread_run(LPVOID arg) {
+ void (*thread_func)(void);
+ // VC really doesn't like casting between data and function pointers.
+ OPENSSL_memcpy(&thread_func, &arg, sizeof(thread_func));
+ thread_func();
+ return 0;
+}
+
+static int run_thread(thread_t *out_thread, void (*thread_func)(void)) {
+ void *arg;
+ // VC really doesn't like casting between data and function pointers.
+ OPENSSL_memcpy(&arg, &thread_func, sizeof(arg));
+
+ *out_thread = CreateThread(NULL /* security attributes */,
+ 0 /* default stack size */, thread_run, arg,
+ 0 /* run immediately */, NULL /* ignore id */);
+ return *out_thread != NULL;
+}
+
+static int wait_for_thread(thread_t thread) {
+ return WaitForSingleObject(thread, INFINITE) == 0;
+}
+
+#else
+
+#include <pthread.h>
+#include <string.h>
+#include <time.h>
+
+typedef pthread_t thread_t;
+
+static void *thread_run(void *arg) {
+ void (*thread_func)(void) = reinterpret_cast<void (*)(void)>(arg);
+ thread_func();
+ return NULL;
+}
+
+static int run_thread(thread_t *out_thread, void (*thread_func)(void)) {
+ return pthread_create(out_thread, NULL /* default attributes */, thread_run,
+ reinterpret_cast<void *>(thread_func)) == 0;
+}
+
+static int wait_for_thread(thread_t thread) {
+ return pthread_join(thread, NULL) == 0;
+}
+
+#endif // OPENSSL_WINDOWS
+
+static unsigned g_once_init_called = 0;
+
+static void once_init(void) {
+ g_once_init_called++;
+
+ // Sleep briefly so one |call_once_thread| instance will call |CRYPTO_once|
+ // while the other is running this function.
+#if defined(OPENSSL_WINDOWS)
+ Sleep(1 /* milliseconds */);
+#else
+ struct timespec req;
+ OPENSSL_memset(&req, 0, sizeof(req));
+ req.tv_nsec = 1000000;
+ nanosleep(&req, NULL);
+#endif
+}
+
+static CRYPTO_once_t g_test_once = CRYPTO_ONCE_INIT;
+
+static void call_once_thread(void) {
+ CRYPTO_once(&g_test_once, once_init);
+}
+
+static CRYPTO_once_t once_init_value = CRYPTO_ONCE_INIT;
+static CRYPTO_once_t once_bss;
+
+static struct CRYPTO_STATIC_MUTEX mutex_init_value = CRYPTO_STATIC_MUTEX_INIT;
+static struct CRYPTO_STATIC_MUTEX mutex_bss;
+
+static CRYPTO_EX_DATA_CLASS ex_data_class_value = CRYPTO_EX_DATA_CLASS_INIT;
+static CRYPTO_EX_DATA_CLASS ex_data_class_bss;
+
+TEST(ThreadTest, Once) {
+ ASSERT_EQ(0u, g_once_init_called)
+ << "g_once_init_called was non-zero at start.";
+
+ thread_t thread1, thread2;
+ ASSERT_TRUE(run_thread(&thread1, call_once_thread));
+ ASSERT_TRUE(run_thread(&thread2, call_once_thread));
+ ASSERT_TRUE(wait_for_thread(thread1));
+ ASSERT_TRUE(wait_for_thread(thread2));
+
+ CRYPTO_once(&g_test_once, once_init);
+
+ EXPECT_EQ(1u, g_once_init_called);
+}
+
+TEST(ThreadTest, InitZeros) {
+ if (FIPS_mode()) {
+ // Our FIPS tooling currently requires that |CRYPTO_ONCE_INIT|,
+ // |CRYPTO_STATIC_MUTEX_INIT| and |CRYPTO_EX_DATA_CLASS| are all zeros and
+ // so can be placed in the BSS section.
+ EXPECT_EQ(Bytes((uint8_t *)&once_bss, sizeof(once_bss)),
+ Bytes((uint8_t *)&once_init_value, sizeof(once_init_value)));
+ EXPECT_EQ(Bytes((uint8_t *)&mutex_bss, sizeof(mutex_bss)),
+ Bytes((uint8_t *)&mutex_init_value, sizeof(mutex_init_value)));
+ EXPECT_EQ(
+ Bytes((uint8_t *)&ex_data_class_bss, sizeof(ex_data_class_bss)),
+ Bytes((uint8_t *)&ex_data_class_value, sizeof(ex_data_class_value)));
+ }
+}
+
+static int g_test_thread_ok = 0;
+static unsigned g_destructor_called_count = 0;
+
+static void thread_local_destructor(void *arg) {
+ if (arg == NULL) {
+ return;
+ }
+
+ unsigned *count = reinterpret_cast<unsigned*>(arg);
+ (*count)++;
+}
+
+TEST(ThreadTest, ThreadLocal) {
+ ASSERT_EQ(nullptr, CRYPTO_get_thread_local(OPENSSL_THREAD_LOCAL_TEST))
+ << "Thread-local data was non-NULL at start.";
+
+ thread_t thread;
+ ASSERT_TRUE(run_thread(&thread, []() {
+ if (CRYPTO_get_thread_local(OPENSSL_THREAD_LOCAL_TEST) != NULL ||
+ !CRYPTO_set_thread_local(OPENSSL_THREAD_LOCAL_TEST,
+ &g_destructor_called_count,
+ thread_local_destructor) ||
+ CRYPTO_get_thread_local(OPENSSL_THREAD_LOCAL_TEST) !=
+ &g_destructor_called_count) {
+ return;
+ }
+
+ g_test_thread_ok = 1;
+ }));
+ ASSERT_TRUE(wait_for_thread(thread));
+
+ EXPECT_TRUE(g_test_thread_ok) << "Thread-local data didn't work in thread.";
+ EXPECT_EQ(1u, g_destructor_called_count);
+
+ // Create a no-op thread to test test that the thread destructor function
+ // works even if thread-local storage wasn't used for a thread.
+ ASSERT_TRUE(run_thread(&thread, []() {}));
+ ASSERT_TRUE(wait_for_thread(thread));
+}
+
+TEST(ThreadTest, RandState) {
+ // In FIPS mode, rand.c maintains a linked-list of thread-local data because
+ // we're required to clear it on process exit. This test exercises removing a
+ // value from that list.
+ uint8_t buf[1];
+ RAND_bytes(buf, sizeof(buf));
+
+ thread_t thread;
+ ASSERT_TRUE(run_thread(&thread, []() {
+ uint8_t buf2[1];
+ RAND_bytes(buf2, sizeof(buf2));
+ }));
+ ASSERT_TRUE(wait_for_thread(thread));
+}
+
+#endif // !OPENSSL_NO_THREADS
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