1 /*
2 *
3 * Copyright 2015 gRPC authors.
4 *
5 * Licensed under the Apache License, Version 2.0 (the "License");
6 * you may not use this file except in compliance with the License.
7 * You may obtain a copy of the License at
8 *
9 * http://www.apache.org/licenses/LICENSE-2.0
10 *
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
16 *
17 */
18
19 #include <grpc/support/port_platform.h>
20
21 #include <grpc/support/alloc.h>
22
23 #include <grpc/support/log.h>
24 #include <stdlib.h>
25 #include <string.h>
26 #include "src/core/lib/profiling/timers.h"
27
zalloc_with_calloc(size_t sz)28 static void* zalloc_with_calloc(size_t sz) { return calloc(sz, 1); }
29
zalloc_with_gpr_malloc(size_t sz)30 static void* zalloc_with_gpr_malloc(size_t sz) {
31 void* p = gpr_malloc(sz);
32 memset(p, 0, sz);
33 return p;
34 }
35
36 static gpr_allocation_functions g_alloc_functions = {malloc, zalloc_with_calloc,
37 realloc, free};
38
gpr_get_allocation_functions()39 gpr_allocation_functions gpr_get_allocation_functions() {
40 return g_alloc_functions;
41 }
42
gpr_set_allocation_functions(gpr_allocation_functions functions)43 void gpr_set_allocation_functions(gpr_allocation_functions functions) {
44 GPR_ASSERT(functions.malloc_fn != nullptr);
45 GPR_ASSERT(functions.realloc_fn != nullptr);
46 GPR_ASSERT(functions.free_fn != nullptr);
47 if (functions.zalloc_fn == nullptr) {
48 functions.zalloc_fn = zalloc_with_gpr_malloc;
49 }
50 g_alloc_functions = functions;
51 }
52
gpr_malloc(size_t size)53 void* gpr_malloc(size_t size) {
54 GPR_TIMER_SCOPE("gpr_malloc", 0);
55 void* p;
56 if (size == 0) return nullptr;
57 p = g_alloc_functions.malloc_fn(size);
58 if (!p) {
59 abort();
60 }
61 return p;
62 }
63
gpr_zalloc(size_t size)64 void* gpr_zalloc(size_t size) {
65 GPR_TIMER_SCOPE("gpr_zalloc", 0);
66 void* p;
67 if (size == 0) return nullptr;
68 p = g_alloc_functions.zalloc_fn(size);
69 if (!p) {
70 abort();
71 }
72 return p;
73 }
74
gpr_free(void * p)75 void gpr_free(void* p) {
76 GPR_TIMER_SCOPE("gpr_free", 0);
77 g_alloc_functions.free_fn(p);
78 }
79
gpr_realloc(void * p,size_t size)80 void* gpr_realloc(void* p, size_t size) {
81 GPR_TIMER_SCOPE("gpr_realloc", 0);
82 if ((size == 0) && (p == nullptr)) return nullptr;
83 p = g_alloc_functions.realloc_fn(p, size);
84 if (!p) {
85 abort();
86 }
87 return p;
88 }
89
gpr_malloc_aligned(size_t size,size_t alignment)90 void* gpr_malloc_aligned(size_t size, size_t alignment) {
91 GPR_ASSERT(((alignment - 1) & alignment) == 0); // Must be power of 2.
92 size_t extra = alignment - 1 + sizeof(void*);
93 void* p = gpr_malloc(size + extra);
94 void** ret = (void**)(((uintptr_t)p + extra) & ~(alignment - 1));
95 ret[-1] = p;
96 return (void*)ret;
97 }
98
gpr_free_aligned(void * ptr)99 void gpr_free_aligned(void* ptr) { gpr_free((static_cast<void**>(ptr))[-1]); }
100