1 // Copyright (c) 2016 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 #ifndef BASE_ALLOCATOR_OOM_H
6 #define BASE_ALLOCATOR_OOM_H
7 
8 #include "third_party/base/logging.h"
9 
10 #if defined(OS_WIN)
11 #include <windows.h>
12 #endif
13 
14 // Do not want trivial entry points just calling OOM_CRASH() to be
15 // commoned up by linker icf/comdat folding.
16 #define OOM_CRASH_PREVENT_ICF()                  \
17   volatile int oom_crash_inhibit_icf = __LINE__; \
18   ALLOW_UNUSED_LOCAL(oom_crash_inhibit_icf)
19 
20 // OOM_CRASH() - Specialization of IMMEDIATE_CRASH which will raise a custom
21 // exception on Windows to signal this is OOM and not a normal assert.
22 #if defined(OS_WIN)
23 #define OOM_CRASH()                                                     \
24   do {                                                                  \
25     OOM_CRASH_PREVENT_ICF();                                            \
26     ::RaiseException(0xE0000008, EXCEPTION_NONCONTINUABLE, 0, nullptr); \
27     IMMEDIATE_CRASH();                                                  \
28   } while (0)
29 #else
30 #define OOM_CRASH()          \
31   do {                       \
32     OOM_CRASH_PREVENT_ICF(); \
33     IMMEDIATE_CRASH();       \
34   } while (0)
35 #endif
36 
37 #endif  // BASE_ALLOCATOR_OOM_H
38