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mem: implement remove_id

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Rename (the non-exported symbol) _unref_id -> _remove_id and make it
remove the id from the map of known ids. This way, the server can send
the remove_mem and reuse the id for new memory before all references
are gone. Fixes "invalid mem id X, expected Y" errors.
This commit is contained in:
Wim Taymans 2020-04-22 11:30:53 +02:00
parent d68e7ed58a
commit 8ab67c5fa0
3 changed files with 9 additions and 6 deletions
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2
src/pipewire/core.c
View file

@ -115,7 +115,7 @@ static void core_event_remove_mem(void *data, uint32_t id)
{
struct pw_core *this = data;
pw_log_debug(NAME" %p: remove mem %u", this, id);
pw_mempool_unref_id(this->pool, id);
pw_mempool_remove_id(this->pool, id);
}
static const struct pw_core_events core_events = {

9
src/pipewire/mem.c
View file

@ -623,8 +623,7 @@ struct pw_memmap * pw_mempool_import_map(struct pw_mempool *pool,
return map;
}
int pw_mempool_unref_id(struct pw_mempool *pool, uint32_t id)
int pw_mempool_remove_id(struct pw_mempool *pool, uint32_t id)
{
struct mempool *impl = SPA_CONTAINER_OF(pool, struct mempool, this);
struct memblock *b;
@ -636,7 +635,10 @@ int pw_mempool_unref_id(struct pw_mempool *pool, uint32_t id)
pw_log_debug(NAME" %p: block:%p id:%d fd:%d ref:%d",
pool, b, id, b->this.fd, b->this.ref);
b->this.id = SPA_ID_INVALID;
pw_map_remove(&impl->map, id);
pw_memblock_unref(&b->this);
return 0;
}
@ -661,7 +663,8 @@ void pw_memblock_free(struct pw_memblock *block)
if (block->map)
block->ref++;
pw_map_remove(&impl->map, block->id);
if (block->id != SPA_ID_INVALID)
pw_map_remove(&impl->map, block->id);
spa_list_remove(&b->link);
pw_mempool_emit_removed(impl, block);

4
src/pipewire/mem.h
View file

@ -134,8 +134,8 @@ static inline void pw_memblock_unref(struct pw_memblock *mem)
pw_memblock_free(mem);
}
/** Unref a memblock for given \a id */
int pw_mempool_unref_id(struct pw_mempool *pool, uint32_t id);
/** Remove a memblock for given \a id */
int pw_mempool_remove_id(struct pw_mempool *pool, uint32_t id);
/** Find memblock for given \a ptr */
struct pw_memblock * pw_mempool_find_ptr(struct pw_mempool *pool, const void *ptr);