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 35 namespace base { 36 37 void* AllocatePsychoticallyBigObjCObject() { 38 return [[PsychoticallyBigObjCObject alloc] init]; 39 } 40 41 } // namespace base 42 43 #endif // ARCH_CPU_64_BITS 44 45 namespace base { 46 47 void* AllocateViaCFAllocatorSystemDefault(ssize_t size) { 48 return CFAllocatorAllocate(kCFAllocatorSystemDefault, size, 0); 49 } 50 51 void* AllocateViaCFAllocatorMalloc(ssize_t size) { 52 return CFAllocatorAllocate(kCFAllocatorMalloc, size, 0); 53 } 54 55 void* AllocateViaCFAllocatorMallocZone(ssize_t size) { 56 return CFAllocatorAllocate(kCFAllocatorMallocZone, size, 0); 57 } 58 59 } // namespace base 60
