18 	struct isl_blk block;  in isl_blk_empty()  local
19 	block.size = 0;  in isl_blk_empty()
20 	block.data = NULL;  in isl_blk_empty()
21 	return block;  in isl_blk_empty()
24 static int isl_blk_is_empty(struct isl_blk block)  in isl_blk_is_empty()  argument
26 	return block.size == 0 && block.data == NULL;  in isl_blk_is_empty()
31 	struct isl_blk block;  in isl_blk_error()  local
32 	block.size = -1;  in isl_blk_error()
33 	block.data = NULL;  in isl_blk_error()
34 	return block;  in isl_blk_error()
37 int isl_blk_is_error(struct isl_blk block)  in isl_blk_is_error()  argument
39 	return block.size == -1 && block.data == NULL;  in isl_blk_is_error()
42 static void isl_blk_free_force(struct isl_ctx *ctx, struct isl_blk block)  in isl_blk_free_force()  argument
46 	for (i = 0; i < block.size; ++i)  in isl_blk_free_force()
47 		isl_int_clear(block.data[i]);  in isl_blk_free_force()
48 	free(block.data);  in isl_blk_free_force()
51 static struct isl_blk extend(struct isl_ctx *ctx, struct isl_blk block,  in extend()  argument
57 	if (block.size >= new_n)  in extend()
58 		return block;  in extend()
60 	p = isl_realloc_array(ctx, block.data, isl_int, new_n);  in extend()
62 		isl_blk_free_force(ctx, block);  in extend()
65 	block.data = p;  in extend()
67 	for (i = block.size; i < new_n; ++i)  in extend()
68 		isl_int_init(block.data[i]);  in extend()
69 	block.size = new_n;  in extend()
71 	return block;  in extend()
77 	struct isl_blk block;  in isl_blk_alloc()  local
79 	block = isl_blk_empty();  in isl_blk_alloc()
91 			block = ctx->cache[best];  in isl_blk_alloc()
104 	return extend(ctx, block, n);  in isl_blk_alloc()
107 struct isl_blk isl_blk_extend(struct isl_ctx *ctx, struct isl_blk block,  in isl_blk_extend()  argument
110 	if (isl_blk_is_empty(block))  in isl_blk_extend()
113 	return extend(ctx, block, new_n);  in isl_blk_extend()
116 void isl_blk_free(struct isl_ctx *ctx, struct isl_blk block)  in isl_blk_free()  argument
118 	if (isl_blk_is_empty(block) || isl_blk_is_error(block))  in isl_blk_free()
122 		ctx->cache[ctx->n_cached++] = block;  in isl_blk_free()
124 		isl_blk_free_force(ctx, block);  in isl_blk_free()