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/*
* 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 WABT_STACK_ALLOCATOR_H_
#define WABT_STACK_ALLOCATOR_H_
#include "allocator.h"
#include "common.h"
#include <setjmp.h>
#define WABT_STACK_ALLOCATOR_STATS 0
typedef struct WabtStackAllocatorChunk {
void* start;
void* current;
void* end;
union {
struct WabtStackAllocatorChunk* prev;
struct WabtStackAllocatorChunk* next_free;
};
} WabtStackAllocatorChunk;
typedef struct WabtStackAllocator {
WabtAllocator allocator;
WabtStackAllocatorChunk* first;
WabtStackAllocatorChunk* last;
WabtAllocator* fallback;
void* last_allocation;
WabtStackAllocatorChunk* next_free;
WabtBool has_jmpbuf;
jmp_buf jmpbuf;
#if WABT_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 /* WABT_STACK_ALLOCATOR_STATS */
} WabtStackAllocator;
WABT_EXTERN_C_BEGIN
WabtResult wabt_init_stack_allocator(WabtStackAllocator*,
WabtAllocator* fallback);
void wabt_destroy_stack_allocator(WabtStackAllocator*);
WABT_EXTERN_C_END
#endif /* WABT_STACK_ALLOCATOR_H_ */
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