223 struct free_block {  struct
225 	struct free_block *next;  argument
226 	struct free_block *prev;  argument
233 	((struct free_block*)(((sljit_u8*)base) + offset))  argument
237 static struct free_block* free_blocks;
241 static SLJIT_INLINE void sljit_insert_free_block(struct free_block *free_block, sljit_uw size)  in sljit_insert_free_block()  argument
243 	free_block->header.size = 0;  in sljit_insert_free_block()
244 	free_block->size = size;  in sljit_insert_free_block()
246 	free_block->next = free_blocks;  in sljit_insert_free_block()
247 	free_block->prev = NULL;  in sljit_insert_free_block()
249 		free_blocks->prev = free_block;  in sljit_insert_free_block()
250 	free_blocks = free_block;  in sljit_insert_free_block()
253 static SLJIT_INLINE void sljit_remove_free_block(struct free_block *free_block)  in sljit_remove_free_block()  argument
255 	if (free_block->next)  in sljit_remove_free_block()
256 		free_block->next->prev = free_block->prev;  in sljit_remove_free_block()
258 	if (free_block->prev)  in sljit_remove_free_block()
259 		free_block->prev->next = free_block->next;  in sljit_remove_free_block()
261 		SLJIT_ASSERT(free_blocks == free_block);  in sljit_remove_free_block()
262 		free_blocks = free_block->next;  in sljit_remove_free_block()
271 	struct free_block *free_block;  in sljit_malloc_exec()  local
280 	free_block = free_blocks;  in sljit_malloc_exec()
281 	while (free_block) {  in sljit_malloc_exec()
282 		if (free_block->size >= size) {  in sljit_malloc_exec()
283 			chunk_size = free_block->size;  in sljit_malloc_exec()
287 				free_block->size = chunk_size;  in sljit_malloc_exec()
288 				header = AS_BLOCK_HEADER(free_block, chunk_size);  in sljit_malloc_exec()
290 				header->executable_offset = free_block->header.executable_offset;  in sljit_malloc_exec()
294 				sljit_remove_free_block(free_block);  in sljit_malloc_exec()
295 				header = (struct block_header*)free_block;  in sljit_malloc_exec()
303 		free_block = free_block->next;  in sljit_malloc_exec()
330 		free_block = AS_FREE_BLOCK(header, size);  in sljit_malloc_exec()
331 		free_block->header.prev_size = size;  in sljit_malloc_exec()
332 		free_block->header.executable_offset = executable_offset;  in sljit_malloc_exec()
333 		sljit_insert_free_block(free_block, chunk_size);  in sljit_malloc_exec()
334 		next_header = AS_BLOCK_HEADER(free_block, chunk_size);  in sljit_malloc_exec()
352 	struct free_block* free_block;  in sljit_free_exec()  local
363 	free_block = AS_FREE_BLOCK(header, -(sljit_sw)header->prev_size);  in sljit_free_exec()
364 	if (SLJIT_UNLIKELY(!free_block->header.size)) {  in sljit_free_exec()
365 		free_block->size += header->size;  in sljit_free_exec()
366 		header = AS_BLOCK_HEADER(free_block, free_block->size);  in sljit_free_exec()
367 		header->prev_size = free_block->size;  in sljit_free_exec()
370 		free_block = (struct free_block*)header;  in sljit_free_exec()
371 		sljit_insert_free_block(free_block, header->size);  in sljit_free_exec()
374 	header = AS_BLOCK_HEADER(free_block, free_block->size);  in sljit_free_exec()
376 		free_block->size += ((struct free_block*)header)->size;  in sljit_free_exec()
377 		sljit_remove_free_block((struct free_block*)header);  in sljit_free_exec()
378 		header = AS_BLOCK_HEADER(free_block, free_block->size);  in sljit_free_exec()
379 		header->prev_size = free_block->size;  in sljit_free_exec()
383 	if (SLJIT_UNLIKELY(!free_block->header.prev_size && header->size == 1)) {  in sljit_free_exec()
385 		if (total_size - free_block->size > (allocated_size * 3 / 2)) {  in sljit_free_exec()
386 			total_size -= free_block->size;  in sljit_free_exec()
387 			sljit_remove_free_block(free_block);  in sljit_free_exec()
388 			free_chunk(free_block, free_block->size + sizeof(struct block_header));  in sljit_free_exec()
397 	struct free_block* free_block;  in sljit_free_unused_memory_exec()  local
398 	struct free_block* next_free_block;  in sljit_free_unused_memory_exec()
402 	free_block = free_blocks;  in sljit_free_unused_memory_exec()
403 	while (free_block) {  in sljit_free_unused_memory_exec()
404 		next_free_block = free_block->next;  in sljit_free_unused_memory_exec()
405 		if (!free_block->header.prev_size &&   in sljit_free_unused_memory_exec()
406 				AS_BLOCK_HEADER(free_block, free_block->size)->size == 1) {  in sljit_free_unused_memory_exec()
407 			total_size -= free_block->size;  in sljit_free_unused_memory_exec()
408 			sljit_remove_free_block(free_block);  in sljit_free_unused_memory_exec()
409 			free_chunk(free_block, free_block->size + sizeof(struct block_header));  in sljit_free_unused_memory_exec()
411 		free_block = next_free_block;  in sljit_free_unused_memory_exec()