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// Copyright 2017 The Abseil Authors.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// https://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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//
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// Wrappers around lsan_interface functions.
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//
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// These are always-available run-time functions manipulating the LeakSanitizer,
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// even when the lsan_interface (and LeakSanitizer) is not available. When
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// LeakSanitizer is not linked in, these functions become no-op stubs.
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#include "absl/debugging/leak_check.h"
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#include "absl/base/attributes.h"
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#include "absl/base/config.h"
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#if defined(ABSL_HAVE_LEAK_SANITIZER)
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#include <sanitizer/lsan_interface.h>
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#if ABSL_HAVE_ATTRIBUTE_WEAK
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extern "C" ABSL_ATTRIBUTE_WEAK int __lsan_is_turned_off();
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#endif
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namespace absl {
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ABSL_NAMESPACE_BEGIN
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bool HaveLeakSanitizer() { return true; }
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#if ABSL_HAVE_ATTRIBUTE_WEAK
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bool LeakCheckerIsActive() {
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return !(&__lsan_is_turned_off && __lsan_is_turned_off());
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}
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#else
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bool LeakCheckerIsActive() { return true; }
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#endif
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bool FindAndReportLeaks() { return __lsan_do_recoverable_leak_check(); }
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void DoIgnoreLeak(const void* ptr) { __lsan_ignore_object(ptr); }
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void RegisterLivePointers(const void* ptr, size_t size) {
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__lsan_register_root_region(ptr, size);
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}
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void UnRegisterLivePointers(const void* ptr, size_t size) {
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__lsan_unregister_root_region(ptr, size);
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}
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LeakCheckDisabler::LeakCheckDisabler() { __lsan_disable(); }
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LeakCheckDisabler::~LeakCheckDisabler() { __lsan_enable(); }
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ABSL_NAMESPACE_END
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} // namespace absl
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#else // defined(ABSL_HAVE_LEAK_SANITIZER)
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namespace absl {
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ABSL_NAMESPACE_BEGIN
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bool HaveLeakSanitizer() { return false; }
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bool LeakCheckerIsActive() { return false; }
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void DoIgnoreLeak(const void*) { }
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void RegisterLivePointers(const void*, size_t) { }
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void UnRegisterLivePointers(const void*, size_t) { }
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LeakCheckDisabler::LeakCheckDisabler() { }
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LeakCheckDisabler::~LeakCheckDisabler() { }
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ABSL_NAMESPACE_END
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} // namespace absl
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#endif // defined(ABSL_HAVE_LEAK_SANITIZER)
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