93d84f28d6
This reverts commit bec2b4d267.
Reason for revert: NewArrayOOM fails.
Original change's description:
> [Memory] Experiment to try using regular version of 'new T[]'.
>
> - Use normal new, vs. nothrow new.
> - Modify NewArray to have only 1 invocation of new.
>
> Bug: chromium:752056
> Change-Id: I1a2fb3626264b1bf647af9227d55e9b54e44e8b6
> Reviewed-on: https://chromium-review.googlesource.com/600895
> Reviewed-by: Michael Lippautz <mlippautz@chromium.org>
> Commit-Queue: Bill Budge <bbudge@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#47173}
TBR=bbudge@chromium.org,mlippautz@chromium.org
Change-Id: I881f3b75209714d11d93fae6268171ffa9cc47a1
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: chromium:752056
Reviewed-on: https://chromium-review.googlesource.com/602847
Reviewed-by: Bill Budge <bbudge@chromium.org>
Commit-Queue: Bill Budge <bbudge@chromium.org>
Cr-Commit-Position: refs/heads/master@{#47174}
79 lines
2.4 KiB
C++
79 lines
2.4 KiB
C++
// Copyright 2012 the V8 project authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#ifndef V8_ALLOCATION_H_
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#define V8_ALLOCATION_H_
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#include "include/v8-platform.h"
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#include "src/base/compiler-specific.h"
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#include "src/base/platform/platform.h"
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#include "src/globals.h"
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#include "src/v8.h"
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namespace v8 {
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namespace internal {
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// This file defines memory allocation functions. If a first attempt at an
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// allocation fails, these functions call back into the embedder, then attempt
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// the allocation a second time. The embedder callback must not reenter V8.
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// Called when allocation routines fail to allocate, even with a possible retry.
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// This function should not return, but should terminate the current processing.
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V8_EXPORT_PRIVATE void FatalProcessOutOfMemory(const char* message);
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// Superclass for classes managed with new & delete.
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class V8_EXPORT_PRIVATE Malloced {
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public:
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void* operator new(size_t size) { return New(size); }
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void operator delete(void* p) { Delete(p); }
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static void* New(size_t size);
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static void Delete(void* p);
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};
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template <typename T>
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T* NewArray(size_t size) {
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T* result = new (std::nothrow) T[size];
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if (result == nullptr) {
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V8::GetCurrentPlatform()->OnCriticalMemoryPressure();
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result = new (std::nothrow) T[size];
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if (result == nullptr) FatalProcessOutOfMemory("NewArray");
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}
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return result;
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}
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template <typename T>
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void DeleteArray(T* array) {
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delete[] array;
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}
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// The normal strdup functions use malloc. These versions of StrDup
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// and StrNDup uses new and calls the FatalProcessOutOfMemory handler
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// if allocation fails.
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V8_EXPORT_PRIVATE char* StrDup(const char* str);
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char* StrNDup(const char* str, int n);
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// Allocation policy for allocating in the C free store using malloc
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// and free. Used as the default policy for lists.
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class FreeStoreAllocationPolicy {
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public:
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INLINE(void* New(size_t size)) { return Malloced::New(size); }
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INLINE(static void Delete(void* p)) { Malloced::Delete(p); }
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};
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void* AlignedAlloc(size_t size, size_t alignment);
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void AlignedFree(void *ptr);
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bool AllocVirtualMemory(size_t size, void* hint, base::VirtualMemory* result);
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bool AlignedAllocVirtualMemory(size_t size, size_t alignment, void* hint,
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base::VirtualMemory* result);
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} // namespace internal
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} // namespace v8
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#endif // V8_ALLOCATION_H_
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