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93 lines
2.3 KiB
93 lines
2.3 KiB
// 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 "src/globals.h"
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namespace v8 {
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namespace internal {
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// Called when allocation routines fail to allocate.
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// This function should not return, but should terminate the current
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// processing.
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void FatalProcessOutOfMemory(const char* message);
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// Superclass for classes managed with new & delete.
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class 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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// A macro is used for defining the base class used for embedded instances.
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// The reason is some compilers allocate a minimum of one word for the
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// superclass. The macro prevents the use of new & delete in debug mode.
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// In release mode we are not willing to pay this overhead.
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#ifdef DEBUG
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// Superclass for classes with instances allocated inside stack
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// activations or inside other objects.
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class Embedded {
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public:
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void* operator new(size_t size);
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void operator delete(void* p);
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};
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#define BASE_EMBEDDED : public Embedded
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#else
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#define BASE_EMBEDDED
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#endif
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// Superclass for classes only using statics.
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class AllStatic {
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#ifdef DEBUG
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public:
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void* operator new(size_t size);
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void operator delete(void* p);
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#endif
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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 T[size];
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if (result == NULL) FatalProcessOutOfMemory("NewArray");
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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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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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} } // namespace v8::internal
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#endif // V8_ALLOCATION_H_
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