92 	struct wl_shm_pool *pool;  member
102 shm_pool_grow_mapping(struct wl_shm_pool *pool)  in shm_pool_grow_mapping()  argument
107 	data = mremap(pool->data, pool->size, pool->new_size, MREMAP_MAYMOVE);  in shm_pool_grow_mapping()
109 	data = wl_os_mremap_maymove(pool->mmap_fd, pool->data, &pool->size,  in shm_pool_grow_mapping()
110 				    pool->new_size, pool->mmap_prot,  in shm_pool_grow_mapping()
111 				    pool->mmap_flags);  in shm_pool_grow_mapping()
112 	if (pool->size != 0 && pool->resource != NULL) {  in shm_pool_grow_mapping()
113 		wl_resource_post_error(pool->resource,  in shm_pool_grow_mapping()
122 shm_pool_finish_resize(struct wl_shm_pool *pool)  in shm_pool_finish_resize()  argument
126 	if (pool->size == pool->new_size)  in shm_pool_finish_resize()
129 	data = shm_pool_grow_mapping(pool);  in shm_pool_finish_resize()
131 		if (pool->resource != NULL)  in shm_pool_finish_resize()
132 			wl_resource_post_error(pool->resource,  in shm_pool_finish_resize()
138 	pool->data = data;  in shm_pool_finish_resize()
139 	pool->size = pool->new_size;  in shm_pool_finish_resize()
143 shm_pool_unref(struct wl_shm_pool *pool, bool external)  in shm_pool_unref()  argument
146 		pool->external_refcount--;  in shm_pool_unref()
147 		assert(pool->external_refcount >= 0);  in shm_pool_unref()
148 		if (pool->external_refcount == 0)  in shm_pool_unref()
149 			shm_pool_finish_resize(pool);  in shm_pool_unref()
151 		pool->internal_refcount--;  in shm_pool_unref()
152 		assert(pool->internal_refcount >= 0);  in shm_pool_unref()
155 	if (pool->internal_refcount + pool->external_refcount > 0)  in shm_pool_unref()
158 	munmap(pool->data, pool->size);  in shm_pool_unref()
160 	close(pool->mmap_fd);  in shm_pool_unref()
162 	free(pool);  in shm_pool_unref()
170 	shm_pool_unref(buffer->pool, false);  in destroy_buffer()
211 	struct wl_shm_pool *pool = wl_resource_get_user_data(resource);  in shm_pool_create_buffer()  local
223 	    offset > pool->size - stride * height) {  in shm_pool_create_buffer()
242 	buffer->pool = pool;  in shm_pool_create_buffer()
243 	pool->internal_refcount++;  in shm_pool_create_buffer()
249 		shm_pool_unref(pool, false);  in shm_pool_create_buffer()
262 	struct wl_shm_pool *pool = wl_resource_get_user_data(resource);  in destroy_pool()  local
264 	pool->resource = NULL;  in destroy_pool()
265 	shm_pool_unref(pool, false);  in destroy_pool()
278 	struct wl_shm_pool *pool = wl_resource_get_user_data(resource);  in shm_pool_resize()  local
280 	if (size < pool->size) {  in shm_pool_resize()
283 				       "shrinking pool invalid");  in shm_pool_resize()
287 	pool->new_size = size;  in shm_pool_resize()
289 	/* If the compositor has taken references on this pool it  in shm_pool_resize()
292 	 * until the compositor finishes dereferencing the pool.  in shm_pool_resize()
294 	if (pool->external_refcount == 0)  in shm_pool_resize()
295 		shm_pool_finish_resize(pool);  in shm_pool_resize()
308 	struct wl_shm_pool *pool;  in shm_create_pool()  local
321 	pool = zalloc(sizeof *pool);  in shm_create_pool()
322 	if (pool == NULL) {  in shm_create_pool()
333 		pool->sigbus_is_impossible = statbuf.st_size >= size;  in shm_create_pool()
335 		pool->sigbus_is_impossible = false;  in shm_create_pool()
337 	pool->sigbus_is_impossible = false;  in shm_create_pool()
340 	pool->internal_refcount = 1;  in shm_create_pool()
341 	pool->external_refcount = 0;  in shm_create_pool()
342 	pool->size = size;  in shm_create_pool()
343 	pool->new_size = size;  in shm_create_pool()
346 	pool->data = mmap(NULL, size, prot, flags, fd, 0);  in shm_create_pool()
347 	if (pool->data == MAP_FAILED) {  in shm_create_pool()
355 	pool->mmap_fd = fd;  in shm_create_pool()
356 	pool->mmap_prot = prot;  in shm_create_pool()
357 	pool->mmap_flags = flags;  in shm_create_pool()
361 	pool->resource =  in shm_create_pool()
363 	if (!pool->resource) {  in shm_create_pool()
365 		munmap(pool->data, pool->size);  in shm_create_pool()
366 		free(pool);  in shm_create_pool()
370 	wl_resource_set_implementation(pool->resource,  in shm_create_pool()
372 				       pool, destroy_pool);  in shm_create_pool()
377 	free(pool);  in shm_create_pool()
459 	if (buffer->pool->external_refcount &&  in wl_shm_buffer_get_data()
460 	    (buffer->pool->size != buffer->pool->new_size))  in wl_shm_buffer_get_data()
461 		wl_log("Buffer address requested when its parent pool "  in wl_shm_buffer_get_data()
464 	return buffer->pool->data + buffer->offset;  in wl_shm_buffer_get_data()
494  * of the pool.
502 	assert(buffer->pool->internal_refcount +  in wl_shm_buffer_ref_pool()
503 	       buffer->pool->external_refcount);  in wl_shm_buffer_ref_pool()
505 	buffer->pool->external_refcount++;  in wl_shm_buffer_ref_pool()
506 	return buffer->pool;  in wl_shm_buffer_ref_pool()
511  * \param pool The pool object
517  * the pool will be automatically destroyed when appropriate.
523 wl_shm_pool_unref(struct wl_shm_pool *pool)  in wl_shm_pool_unref()  argument
525 	shm_pool_unref(pool, true);  in wl_shm_pool_unref()
532 	 * the pool then we'll uninstall the signal handler so we can  in reraise_sigbus()
543 	struct wl_shm_pool *pool;  in sigbus_handler()  local
550 	pool = sigbus_data->current_pool;  in sigbus_handler()
553 	 * the pool then the error is a real problem so we'll reraise  in sigbus_handler()
555 	if (pool == NULL ||  in sigbus_handler()
556 	    (char *) info->si_addr < pool->data ||  in sigbus_handler()
557 	    (char *) info->si_addr >= pool->data + pool->size) {  in sigbus_handler()
565 	if (mmap(pool->data, pool->size, PROT_READ | PROT_WRITE,  in sigbus_handler()
616  * the SHM pool of the given buffer then the client will be sent an
634 	struct wl_shm_pool *pool = buffer->pool;  in wl_shm_buffer_begin_access()  local
637 	if (pool->sigbus_is_impossible)  in wl_shm_buffer_begin_access()
652 	       sigbus_data->current_pool == pool);  in wl_shm_buffer_begin_access()
654 	sigbus_data->current_pool = pool;  in wl_shm_buffer_begin_access()
672 	struct wl_shm_pool *pool = buffer->pool;  in wl_shm_buffer_end_access()  local
675 	if (pool->sigbus_is_impossible)  in wl_shm_buffer_end_access()