David Benjamin
33d1049b1f
We use the standard Apache 2.0 file header, described in "APPENDIX: How to apply the Apache License to your work." This was primarily automated by running: git ls-tree -r --name-only HEAD | xargs go run ./util/relicense.go See go/boringssl-relicensing-triage for the results of triaging the output of the tool. As part of this, switch from taking fiat-crypto under MIT license to Apache 2.0. (It is licensed under MIT OR Apache-2.0 OR BSD-1-Clause.) The copyright_summary tool can also be used to confirm we didn't accidentally drop any copyright lines: # Run before the CL git grep -l Copyright | xargs go run ./util/copyright_summary.go -out /tmp/old.json # Run after the CL git grep -l Copyright | xargs go run ./util/copyright_summary.go -compare /tmp/old.json Bug: 364634028 Change-Id: I17c50e761e9d077a1f92e25969e50ed35e320c59 Reviewed-on: https://boringssl-review.googlesource.com/c/boringssl/+/75852 Reviewed-by: Bob Beck <bbe@google.com> Commit-Queue: David Benjamin <davidben@google.com> Reviewed-by: Adam Langley <agl@google.com>
80 lines
2.2 KiB
C++
80 lines
2.2 KiB
C++
// Copyright 2015 The BoringSSL Authors
|
|
//
|
|
// 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
|
|
//
|
|
// https://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 "internal.h"
|
|
|
|
#include <gtest/gtest.h>
|
|
|
|
#if defined(OPENSSL_THREADS)
|
|
#include <thread>
|
|
#endif
|
|
|
|
|
|
TEST(RefCountTest, Basic) {
|
|
CRYPTO_refcount_t count = 0;
|
|
|
|
CRYPTO_refcount_inc(&count);
|
|
EXPECT_EQ(1u, count);
|
|
|
|
EXPECT_TRUE(CRYPTO_refcount_dec_and_test_zero(&count));
|
|
EXPECT_EQ(0u, count);
|
|
|
|
count = CRYPTO_REFCOUNT_MAX;
|
|
CRYPTO_refcount_inc(&count);
|
|
EXPECT_EQ(CRYPTO_REFCOUNT_MAX, count)
|
|
<< "Count did not saturate correctly when incrementing.";
|
|
EXPECT_FALSE(CRYPTO_refcount_dec_and_test_zero(&count));
|
|
EXPECT_EQ(CRYPTO_REFCOUNT_MAX, count)
|
|
<< "Count did not saturate correctly when decrementing.";
|
|
|
|
count = 2;
|
|
EXPECT_FALSE(CRYPTO_refcount_dec_and_test_zero(&count));
|
|
EXPECT_EQ(1u, count);
|
|
}
|
|
|
|
#if defined(OPENSSL_THREADS)
|
|
// This test is primarily intended to run under ThreadSanitizer.
|
|
TEST(RefCountTest, Threads) {
|
|
CRYPTO_refcount_t count = 0;
|
|
|
|
// Race two increments.
|
|
{
|
|
std::thread thread([&] { CRYPTO_refcount_inc(&count); });
|
|
CRYPTO_refcount_inc(&count);
|
|
thread.join();
|
|
EXPECT_EQ(2u, count);
|
|
}
|
|
|
|
// Race an increment with a decrement.
|
|
{
|
|
std::thread thread([&] { CRYPTO_refcount_inc(&count); });
|
|
EXPECT_FALSE(CRYPTO_refcount_dec_and_test_zero(&count));
|
|
thread.join();
|
|
EXPECT_EQ(2u, count);
|
|
}
|
|
|
|
// Race two decrements.
|
|
{
|
|
bool thread_saw_zero;
|
|
std::thread thread(
|
|
[&] { thread_saw_zero = CRYPTO_refcount_dec_and_test_zero(&count); });
|
|
bool saw_zero = CRYPTO_refcount_dec_and_test_zero(&count);
|
|
thread.join();
|
|
EXPECT_EQ(0u, count);
|
|
// Exactly one thread should see zero.
|
|
EXPECT_NE(saw_zero, thread_saw_zero);
|
|
}
|
|
}
|
|
#endif
|