1// Copyright (c) 2010 The Chromium Authors. All rights reserved. 2// Use of this source code is governed by a BSD-style license that can be 3// found in the LICENSE file. 4 5#include "base/process/memory_unittest_mac.h" 6 7#import <Foundation/Foundation.h> 8#include <CoreFoundation/CoreFoundation.h> 9 10#if !defined(ARCH_CPU_64_BITS) 11 12// In the 64-bit environment, the Objective-C 2.0 Runtime Reference states 13// that sizeof(anInstance) is constrained to 32 bits. That's not necessarily 14// "psychotically big" and in fact a 64-bit program is expected to be able to 15// successfully allocate an object that large, likely reserving a good deal of 16// swap space. The only way to test the behavior of memory exhaustion for 17// Objective-C allocation in this environment would be to loop over allocation 18// of these large objects, but that would slowly consume all available memory 19// and cause swap file proliferation. That's bad, so this behavior isn't 20// tested in the 64-bit environment. 21 22@interface PsychoticallyBigObjCObject : NSObject 23{ 24 // In the 32-bit environment, the compiler limits Objective-C objects to 25 // < 2GB in size. 26 int justUnder2Gigs_[(2U * 1024 * 1024 * 1024 - 1) / sizeof(int)]; 27} 28 29@end 30 31@implementation PsychoticallyBigObjCObject 32 33@end 34 35namespace base { 36 37void* AllocatePsychoticallyBigObjCObject() { 38 return [[PsychoticallyBigObjCObject alloc] init]; 39} 40 41} // namespace base 42 43#endif // ARCH_CPU_64_BITS 44 45namespace base { 46 47void* AllocateViaCFAllocatorSystemDefault(ssize_t size) { 48 return CFAllocatorAllocate(kCFAllocatorSystemDefault, size, 0); 49} 50 51void* AllocateViaCFAllocatorMalloc(ssize_t size) { 52 return CFAllocatorAllocate(kCFAllocatorMalloc, size, 0); 53} 54 55void* AllocateViaCFAllocatorMallocZone(ssize_t size) { 56 return CFAllocatorAllocate(kCFAllocatorMallocZone, size, 0); 57} 58 59} // namespace base 60