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Copy pathallocation.cc
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112 lines (85 loc) · 2.24 KB
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// Copyright 2012 the V8 project 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 "src/allocation.h"
#include <stdlib.h> // For free, malloc.
#include "src/base/bits.h"
#include "src/base/logging.h"
#include "src/base/platform/platform.h"
#include "src/utils.h"
#include "src/v8.h"
#if V8_LIBC_BIONIC
#include <malloc.h> // NOLINT
#endif
namespace v8 {
namespace internal {
void* Malloced::New(size_t size) {
void* result = malloc(size);
if (result == NULL) {
V8::FatalProcessOutOfMemory("Malloced operator new");
}
return result;
}
void Malloced::Delete(void* p) {
free(p);
}
#ifdef DEBUG
static void* invalid = static_cast<void*>(NULL);
void* Embedded::operator new(size_t size) {
UNREACHABLE();
return invalid;
}
void Embedded::operator delete(void* p) {
UNREACHABLE();
}
void* AllStatic::operator new(size_t size) {
UNREACHABLE();
return invalid;
}
void AllStatic::operator delete(void* p) {
UNREACHABLE();
}
#endif
char* StrDup(const char* str) {
int length = StrLength(str);
char* result = NewArray<char>(length + 1);
MemCopy(result, str, length);
result[length] = '\0';
return result;
}
char* StrNDup(const char* str, int n) {
int length = StrLength(str);
if (n < length) length = n;
char* result = NewArray<char>(length + 1);
MemCopy(result, str, length);
result[length] = '\0';
return result;
}
void* AlignedAlloc(size_t size, size_t alignment) {
DCHECK_LE(V8_ALIGNOF(void*), alignment);
DCHECK(base::bits::IsPowerOfTwo64(alignment));
void* ptr;
#if V8_OS_WIN
ptr = _aligned_malloc(size, alignment);
#elif V8_LIBC_BIONIC
// posix_memalign is not exposed in some Android versions, so we fall back to
// memalign. See http://code.google.com/p/android/issues/detail?id=35391.
ptr = memalign(alignment, size);
#else
if (posix_memalign(&ptr, alignment, size)) ptr = NULL;
#endif
if (ptr == NULL) V8::FatalProcessOutOfMemory("AlignedAlloc");
return ptr;
}
void AlignedFree(void *ptr) {
#if V8_OS_WIN
_aligned_free(ptr);
#elif V8_LIBC_BIONIC
// Using free is not correct in general, but for V8_LIBC_BIONIC it is.
free(ptr);
#else
free(ptr);
#endif
}
} // namespace internal
} // namespace v8