blob: a17ff00fc838d51ffc2971b7d136f82e234d4910 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
|
/*
* Copyright 2016 WebAssembly Community Group participants
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef WASM_STACK_ALLOCATOR_H_
#define WASM_STACK_ALLOCATOR_H_
#include "wasm-allocator.h"
#include "wasm-common.h"
#include <setjmp.h>
#define WASM_STACK_ALLOCATOR_STATS 0
typedef struct WasmStackAllocatorChunk {
void* start;
void* current;
void* end;
union {
struct WasmStackAllocatorChunk* prev;
struct WasmStackAllocatorChunk* next_free;
};
} WasmStackAllocatorChunk;
typedef struct WasmStackAllocator {
WasmAllocator allocator;
WasmStackAllocatorChunk* first;
WasmStackAllocatorChunk* last;
WasmAllocator* fallback;
void* last_allocation;
WasmStackAllocatorChunk* next_free;
WasmBool has_jmpbuf;
jmp_buf jmpbuf;
#if WASM_STACK_ALLOCATOR_STATS
/* some random stats */
size_t chunk_alloc_count;
size_t alloc_count;
size_t realloc_count;
size_t free_count;
size_t total_chunk_bytes;
size_t total_alloc_bytes;
size_t total_realloc_bytes;
#endif /* WASM_STACK_ALLOCATOR_STATS */
} WasmStackAllocator;
WASM_EXTERN_C_BEGIN
WasmResult wasm_init_stack_allocator(WasmStackAllocator*,
WasmAllocator* fallback);
void wasm_destroy_stack_allocator(WasmStackAllocator*);
WASM_EXTERN_C_END
#endif /* WASM_STACK_ALLOCATOR_H_ */
|
