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 THIRD_PARTY_BASE_ALLOCATOR_PARTITION_ALLOCATOR_OOM_H_
6 #define THIRD_PARTY_BASE_ALLOCATOR_PARTITION_ALLOCATOR_OOM_H_
7 
8 #include "third_party/base/allocator/partition_allocator/oom_callback.h"
9 #include "third_party/base/immediate_crash.h"
10 
11 #if defined(OS_WIN)
12 #include <windows.h>
13 #endif
14 
15 // Do not want trivial entry points just calling OOM_CRASH() to be
16 // commoned up by linker icf/comdat folding.
17 #define OOM_CRASH_PREVENT_ICF()                  \
18   volatile int oom_crash_inhibit_icf = __LINE__; \
19   ALLOW_UNUSED_LOCAL(oom_crash_inhibit_icf)
20 
21 // OOM_CRASH() - Specialization of IMMEDIATE_CRASH which will raise a custom
22 // exception on Windows to signal this is OOM and not a normal assert.
23 #if defined(OS_WIN)
24 #define OOM_CRASH(size)                                                 \
25   do {                                                                  \
26     OOM_CRASH_PREVENT_ICF();                                            \
27     base::internal::RunPartitionAllocOomCallback();                     \
28     ::RaiseException(0xE0000008, EXCEPTION_NONCONTINUABLE, 0, nullptr); \
29     IMMEDIATE_CRASH();                                                  \
30   } while (0)
31 #else
32 #define OOM_CRASH(size)                             \
33   do {                                              \
34     base::internal::RunPartitionAllocOomCallback(); \
35     OOM_CRASH_PREVENT_ICF();                        \
36     IMMEDIATE_CRASH();                              \
37   } while (0)
38 #endif
39 
40 #endif  // THIRD_PARTY_BASE_ALLOCATOR_PARTITION_ALLOCATOR_OOM_H_
41