1 /*
2 * Copyright (C) 2008 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17 #include <new>
18
19 #include <stdlib.h>
20
21 #include <async_safe/log.h>
22
23 __attribute__((weak)) const std::nothrow_t std::nothrow = {};
24
25 // We can't throw in bionic, so we go straight to the equivalent of
26 // std::terminate for these two instead.
operator new(std::size_t size)27 void* operator new(std::size_t size) {
28 void* p = malloc(size);
29 if (p == nullptr) {
30 async_safe_fatal("new failed to allocate %zu bytes", size);
31 }
32 return p;
33 }
operator new[](std::size_t size)34 void* operator new[](std::size_t size) {
35 void* p = malloc(size);
36 if (p == nullptr) {
37 async_safe_fatal("new[] failed to allocate %zu bytes", size);
38 }
39 return p;
40 }
41
42 // These two are the "nothrow" variants, so we just return nullptr on failure.
operator new(std::size_t size,const std::nothrow_t &)43 void* operator new(std::size_t size, const std::nothrow_t&) {
44 return malloc(size);
45 }
operator new[](std::size_t size,const std::nothrow_t &)46 void* operator new[](std::size_t size, const std::nothrow_t&) {
47 return malloc(size);
48 }
49
50 // free() can't throw anyway (except on heap corruption, which is always fatal),
51 // so there's no difference between the regular and "nothrow" variants here.
operator delete(void * p)52 void operator delete(void* p) noexcept { free(p); }
operator delete[](void * p)53 void operator delete[](void* p) noexcept { free(p); }
operator delete(void * p,const std::nothrow_t &)54 void operator delete(void* p, const std::nothrow_t&) noexcept { free(p); }
operator delete[](void * p,const std::nothrow_t &)55 void operator delete[](void* p, const std::nothrow_t&) noexcept { free(p); }
56
57 // TODO: these can use free_sized() once we have it (http://b/284321795).
operator delete(void * p,std::size_t)58 void operator delete(void* p, std::size_t) noexcept { free(p); }
operator delete[](void * p,std::size_t)59 void operator delete[](void* p, std::size_t) noexcept { free(p); }
60