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Unified Diff: components/metrics/leak_detector/call_stack_manager.cc

Issue 1472693002: Revert of components/metrics: Add runtime memory leak detector (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@master
Patch Set: Created 5 years, 1 month ago
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Index: components/metrics/leak_detector/call_stack_manager.cc
diff --git a/components/metrics/leak_detector/call_stack_manager.cc b/components/metrics/leak_detector/call_stack_manager.cc
deleted file mode 100644
index de9fcd825aca246b786c5ee7bef9902c1c9ef105..0000000000000000000000000000000000000000
--- a/components/metrics/leak_detector/call_stack_manager.cc
+++ /dev/null
@@ -1,67 +0,0 @@
-// Copyright 2015 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#include "components/metrics/leak_detector/call_stack_manager.h"
-
-#include <algorithm> // For std::copy.
-#include <new>
-
-#include "base/hash.h"
-#include "components/metrics/leak_detector/custom_allocator.h"
-
-namespace metrics {
-namespace leak_detector {
-
-CallStackManager::CallStackManager() {}
-
-CallStackManager::~CallStackManager() {
- for (CallStack* call_stack : call_stacks_) {
- CustomAllocator::Free(call_stack->stack,
- call_stack->depth * sizeof(*call_stack->stack));
- call_stack->stack = nullptr;
- call_stack->depth = 0;
-
- CustomAllocator::Free(call_stack, sizeof(CallStack));
- }
- call_stacks_.clear();
-}
-
-const CallStack* CallStackManager::GetCallStack(size_t depth,
- const void* const stack[]) {
- // Temporarily create a call stack object for lookup in |call_stacks_|.
- CallStack temp;
- temp.depth = depth;
- temp.stack = const_cast<const void**>(stack);
- // This is the only place where the call stack's hash is computed. This value
- // can be reused in the created object to avoid further hash computation.
- temp.hash =
- base::Hash(reinterpret_cast<const char*>(stack), sizeof(*stack) * depth);
-
- auto iter = call_stacks_.find(&temp);
- if (iter != call_stacks_.end())
- return *iter;
-
- // Since |call_stacks_| stores CallStack pointers rather than actual objects,
- // create new call objects manually here.
- CallStack* call_stack =
- new (CustomAllocator::Allocate(sizeof(CallStack))) CallStack;
- call_stack->depth = depth;
- call_stack->hash = temp.hash; // Don't run the hash function again.
- call_stack->stack = reinterpret_cast<const void**>(
- CustomAllocator::Allocate(sizeof(*stack) * depth));
- std::copy(stack, stack + depth, call_stack->stack);
-
- call_stacks_.insert(call_stack);
- return call_stack;
-}
-
-bool CallStackManager::CallStackPointerEqual::operator()(
- const CallStack* c1,
- const CallStack* c2) const {
- return c1->depth == c2->depth && c1->hash == c2->hash &&
- std::equal(c1->stack, c1->stack + c1->depth, c2->stack);
-}
-
-} // namespace leak_detector
-} // namespace metrics
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