60 lines
1.8 KiB
Plaintext
60 lines
1.8 KiB
Plaintext
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// Copyright (c) 2010 The Chromium 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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#include "base/process/memory_unittest_mac.h"
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#import <Foundation/Foundation.h>
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#include <CoreFoundation/CoreFoundation.h>
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#if !defined(ARCH_CPU_64_BITS)
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// In the 64-bit environment, the Objective-C 2.0 Runtime Reference states
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// that sizeof(anInstance) is constrained to 32 bits. That's not necessarily
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// "psychotically big" and in fact a 64-bit program is expected to be able to
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// successfully allocate an object that large, likely reserving a good deal of
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// swap space. The only way to test the behavior of memory exhaustion for
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// Objective-C allocation in this environment would be to loop over allocation
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// of these large objects, but that would slowly consume all available memory
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// and cause swap file proliferation. That's bad, so this behavior isn't
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// tested in the 64-bit environment.
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@interface PsychoticallyBigObjCObject : NSObject
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{
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// In the 32-bit environment, the compiler limits Objective-C objects to
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// < 2GB in size.
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int justUnder2Gigs_[(2U * 1024 * 1024 * 1024 - 1) / sizeof(int)];
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}
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@end
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@implementation PsychoticallyBigObjCObject
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@end
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namespace base {
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void* AllocatePsychoticallyBigObjCObject() {
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return [[PsychoticallyBigObjCObject alloc] init];
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}
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} // namespace base
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#endif // ARCH_CPU_64_BITS
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namespace base {
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void* AllocateViaCFAllocatorSystemDefault(ssize_t size) {
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return CFAllocatorAllocate(kCFAllocatorSystemDefault, size, 0);
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}
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void* AllocateViaCFAllocatorMalloc(ssize_t size) {
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return CFAllocatorAllocate(kCFAllocatorMalloc, size, 0);
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}
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void* AllocateViaCFAllocatorMallocZone(ssize_t size) {
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return CFAllocatorAllocate(kCFAllocatorMallocZone, size, 0);
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}
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} // namespace base
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