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// Copyright 2017 The Abseil 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.
//
// Wrappers around lsan_interface functions.
//
// These are always-available run-time functions manipulating the LeakSanitizer,
// even when the lsan_interface (and LeakSanitizer) is not available. When
// LeakSanitizer is not linked in, these functions become no-op stubs.
#include "absl/debugging/leak_check.h"
#include "absl/base/attributes.h"
#include "absl/base/config.h"
#if defined(ABSL_HAVE_LEAK_SANITIZER)
#include <sanitizer/lsan_interface.h>
#if ABSL_HAVE_ATTRIBUTE_WEAK
extern "C" ABSL_ATTRIBUTE_WEAK int __lsan_is_turned_off();
#endif
namespace absl {
ABSL_NAMESPACE_BEGIN
bool HaveLeakSanitizer() { return true; }
#if ABSL_HAVE_ATTRIBUTE_WEAK
bool LeakCheckerIsActive() {
return !(&__lsan_is_turned_off && __lsan_is_turned_off());
}
#else
bool LeakCheckerIsActive() { return true; }
#endif
bool FindAndReportLeaks() { return __lsan_do_recoverable_leak_check(); }
void DoIgnoreLeak(const void* ptr) { __lsan_ignore_object(ptr); }
void RegisterLivePointers(const void* ptr, size_t size) {
__lsan_register_root_region(ptr, size);
}
void UnRegisterLivePointers(const void* ptr, size_t size) {
__lsan_unregister_root_region(ptr, size);
}
LeakCheckDisabler::LeakCheckDisabler() { __lsan_disable(); }
LeakCheckDisabler::~LeakCheckDisabler() { __lsan_enable(); }
ABSL_NAMESPACE_END
} // namespace absl
#else // defined(ABSL_HAVE_LEAK_SANITIZER)
namespace absl {
ABSL_NAMESPACE_BEGIN
bool HaveLeakSanitizer() { return false; }
bool LeakCheckerIsActive() { return false; }
void DoIgnoreLeak(const void*) { }
void RegisterLivePointers(const void*, size_t) { }
void UnRegisterLivePointers(const void*, size_t) { }
LeakCheckDisabler::LeakCheckDisabler() = default;
LeakCheckDisabler::~LeakCheckDisabler() = default;
ABSL_NAMESPACE_END
} // namespace absl
#endif // defined(ABSL_HAVE_LEAK_SANITIZER)
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