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author | Abseil Team <absl-team@google.com> | 2018-04-18 05:56:39 -0700 |
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committer | Jon Cohen <cohenjon@google.com> | 2018-04-19 10:19:32 -0400 |
commit | 5b535401665cc6aa96d54a5c9b0901153d97210f (patch) | |
tree | 8d45863656540c8ec81eb7d2742c9191c33ca935 /absl/base/internal/malloc_extension.cc | |
parent | a7e522daf1ec9cda69b356472f662142dd0c1215 (diff) | |
download | abseil-5b535401665cc6aa96d54a5c9b0901153d97210f.tar.gz abseil-5b535401665cc6aa96d54a5c9b0901153d97210f.tar.bz2 abseil-5b535401665cc6aa96d54a5c9b0901153d97210f.zip |
- ed0ba496fe01eb8edfa86beade8a37768e7c12ef Updates the API for Exception Safety testing to use build... by Abseil Team <absl-team@google.com>
- c4b7a4e517c9404932c45f2f9f92eb7dc694e45d Internal change by Abseil Team <absl-team@google.com>
- 76c78ed9385f65d881511645446e0bb8ababf6ec Add missing ABSL_PREDICT_FALSE to one of FixedArray::at()... by Abseil Team <absl-team@google.com>
- 1204fb1c46f007dd9dfb7d9abf3e96c58835d193 Internal change. by Greg Falcon <gfalcon@google.com>
- f1f47c98a026bc5e425ae83ff4a2eb391bbd3d9b Add internal-only functionality to examine the stack, to ... by Derek Mauro <dmauro@google.com>
- 30d63097cd268d912f917526f6511005580465c4 fix typo by Abseil Team <absl-team@google.com>
- 942d7efa6cf54cd248ca57dcaf3c245188b52a76 Remove unnecessary semicolons from comment examples. by Abseil Team <absl-team@google.com>
- 7db0669cf23a06d934d3ed8c76aee4e4e23b7e04 Remove malloc_hook and malloc_extension from our internal... by Greg Falcon <gfalcon@google.com>
- 0190f1063d101b1ded355019df2e1d325931f6c7 Make the maximum length of a string view equal difference... by Abseil Team <absl-team@google.com>
- c8ae37cbce29449b02115a0ebd435ddc3d7ab062 Add namespace qualification. by Shaindel Schwartz <shaindel@google.com>
- ff70afe2e6e3dd39f51ce9829e3e1f18231bf4d7 Fix internal/direct_mmap.h for non-linux builds. by Greg Falcon <gfalcon@google.com>
GitOrigin-RevId: ed0ba496fe01eb8edfa86beade8a37768e7c12ef
Change-Id: I7595ee3480d1d6724fd3797c15ba9d9be0d17e62
Diffstat (limited to 'absl/base/internal/malloc_extension.cc')
-rw-r--r-- | absl/base/internal/malloc_extension.cc | 162 |
1 files changed, 0 insertions, 162 deletions
diff --git a/absl/base/internal/malloc_extension.cc b/absl/base/internal/malloc_extension.cc deleted file mode 100644 index 5b906533..00000000 --- a/absl/base/internal/malloc_extension.cc +++ /dev/null @@ -1,162 +0,0 @@ -// 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 -// -// 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 "absl/base/internal/malloc_extension.h" - -#include <assert.h> -#include <string.h> -#include <atomic> -#include <string> - -#include "absl/base/dynamic_annotations.h" - -namespace absl { -namespace base_internal { - -// SysAllocator implementation -SysAllocator::~SysAllocator() {} -void SysAllocator::GetStats(char* buffer, int) { buffer[0] = 0; } - -// Dummy key method to avoid weak vtable. -void MallocExtensionWriter::UnusedKeyMethod() {} - -void StringMallocExtensionWriter::Write(const char* buf, int len) { - out_->append(buf, len); -} - -// Default implementation -- does nothing -MallocExtension::~MallocExtension() { } -bool MallocExtension::VerifyAllMemory() { return true; } -bool MallocExtension::VerifyNewMemory(const void*) { return true; } -bool MallocExtension::VerifyArrayNewMemory(const void*) { return true; } -bool MallocExtension::VerifyMallocMemory(const void*) { return true; } - -bool MallocExtension::GetNumericProperty(const char*, size_t*) { - return false; -} - -bool MallocExtension::SetNumericProperty(const char*, size_t) { - return false; -} - -void MallocExtension::GetStats(char* buffer, int length) { - assert(length > 0); - static_cast<void>(length); - buffer[0] = '\0'; -} - -bool MallocExtension::MallocMemoryStats(int* blocks, size_t* total, - int histogram[kMallocHistogramSize]) { - *blocks = 0; - *total = 0; - memset(histogram, 0, sizeof(*histogram) * kMallocHistogramSize); - return true; -} - -void MallocExtension::MarkThreadIdle() { - // Default implementation does nothing -} - -void MallocExtension::MarkThreadBusy() { - // Default implementation does nothing -} - -SysAllocator* MallocExtension::GetSystemAllocator() { - return nullptr; -} - -void MallocExtension::SetSystemAllocator(SysAllocator*) { - // Default implementation does nothing -} - -void MallocExtension::ReleaseToSystem(size_t) { - // Default implementation does nothing -} - -void MallocExtension::ReleaseFreeMemory() { - ReleaseToSystem(static_cast<size_t>(-1)); // SIZE_T_MAX -} - -void MallocExtension::SetMemoryReleaseRate(double) { - // Default implementation does nothing -} - -double MallocExtension::GetMemoryReleaseRate() { - return -1.0; -} - -size_t MallocExtension::GetEstimatedAllocatedSize(size_t size) { - return size; -} - -size_t MallocExtension::GetAllocatedSize(const void* p) { - assert(GetOwnership(p) != kNotOwned); - static_cast<void>(p); - return 0; -} - -MallocExtension::Ownership MallocExtension::GetOwnership(const void*) { - return kUnknownOwnership; -} - -void MallocExtension::GetProperties(MallocExtension::StatLevel, - std::map<std::string, Property>* result) { - result->clear(); -} - -size_t MallocExtension::ReleaseCPUMemory(int) { - return 0; -} - -// The current malloc extension object. - -std::atomic<MallocExtension*> MallocExtension::current_instance_; - -MallocExtension* MallocExtension::InitModule() { - MallocExtension* ext = new MallocExtension; - current_instance_.store(ext, std::memory_order_release); - return ext; -} - -void MallocExtension::Register(MallocExtension* implementation) { - InitModuleOnce(); - // When running under valgrind, our custom malloc is replaced with - // valgrind's one and malloc extensions will not work. (Note: - // callers should be responsible for checking that they are the - // malloc that is really being run, before calling Register. This - // is just here as an extra sanity check.) - // Under compiler-based ThreadSanitizer RunningOnValgrind() returns true, - // but we still want to use malloc extensions. -#ifndef THREAD_SANITIZER - if (RunningOnValgrind()) { - return; - } -#endif // #ifndef THREAD_SANITIZER - current_instance_.store(implementation, std::memory_order_release); -} -void MallocExtension::GetHeapSample(MallocExtensionWriter*) {} - -void MallocExtension::GetHeapGrowthStacks(MallocExtensionWriter*) {} - -void MallocExtension::GetFragmentationProfile(MallocExtensionWriter*) {} - -} // namespace base_internal -} // namespace absl - -// Default implementation just returns size. The expectation is that -// the linked-in malloc implementation might provide an override of -// this weak function with a better implementation. -ABSL_ATTRIBUTE_WEAK ABSL_ATTRIBUTE_NOINLINE size_t nallocx(size_t size, int) { - return size; -} |