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Zend/async: batched transferred-zval release #17

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Merged
EdmondDantes merged 1 commit into from
Jul 28, 2026
Merged

Zend/async: batched transferred-zval release #17

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1 change: 1 addition & 0 deletions Zend/zend_async_API.c
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Original file line number Diff line number Diff line change
Expand Up @@ -271,6 +271,7 @@ zend_async_thread_load_zval_t zend_async_thread_load_zval_fn = NULL;
zend_async_thread_transfer_zval_toplevel_t zend_async_thread_transfer_zval_toplevel_fn = NULL;
zend_async_thread_load_zval_toplevel_t zend_async_thread_load_zval_toplevel_fn = NULL;
zend_async_thread_release_transferred_zval_t zend_async_thread_release_transferred_zval_fn = NULL;
zend_async_thread_release_transferred_zvals_t zend_async_thread_release_transferred_zvals_fn = NULL;
zend_async_thread_xlat_put_t zend_async_thread_xlat_put_fn = NULL;
zend_async_thread_defer_release_t zend_async_thread_defer_release_fn = NULL;

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10 changes: 10 additions & 0 deletions Zend/zend_async_API.h
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Expand Up @@ -480,6 +480,13 @@ typedef void (*zend_async_thread_load_zval_toplevel_t)(zval *dst, const zval *sr
* call the zval is undef. */
typedef void (*zend_async_thread_release_transferred_zval_t)(zval *z);

/* Release several roots of ONE transfer under a single visited set, so an object
* reached from more than one root (a transferred closure that captured an object
* transferred alongside it) is freed exactly once. Releasing such roots with the
* single-zval call each — a fresh visited set per call — double-frees the shared
* object. */
typedef void (*zend_async_thread_release_transferred_zvals_t)(zval **roots, size_t count);

typedef void (*zend_async_thread_xlat_put_t)(
zend_async_thread_transfer_ctx_t *ctx, const void *src, void *dst);
/* Defer release of an emalloc zval until the load ctx is torn down. The zval
Expand Down Expand Up @@ -2398,6 +2405,7 @@ ZEND_API extern zend_async_thread_load_zval_t zend_async_thread_load_zval_fn;
ZEND_API extern zend_async_thread_transfer_zval_toplevel_t zend_async_thread_transfer_zval_toplevel_fn;
ZEND_API extern zend_async_thread_load_zval_toplevel_t zend_async_thread_load_zval_toplevel_fn;
ZEND_API extern zend_async_thread_release_transferred_zval_t zend_async_thread_release_transferred_zval_fn;
ZEND_API extern zend_async_thread_release_transferred_zvals_t zend_async_thread_release_transferred_zvals_fn;
ZEND_API extern zend_async_thread_xlat_put_t zend_async_thread_xlat_put_fn;
ZEND_API extern zend_async_thread_defer_release_t zend_async_thread_defer_release_fn;

Expand All @@ -2412,6 +2420,8 @@ ZEND_API extern zend_async_thread_defer_release_t zend_async_thread_defer_releas
zend_async_thread_load_zval_toplevel_fn((dst), (src))
#define ZEND_ASYNC_THREAD_RELEASE_TRANSFERRED_ZVAL(z) \
zend_async_thread_release_transferred_zval_fn(z)
#define ZEND_ASYNC_THREAD_RELEASE_TRANSFERRED_ZVALS(roots, count) \
zend_async_thread_release_transferred_zvals_fn((roots), (count))
#define ZEND_ASYNC_THREAD_XLAT_PUT(ctx, src, dst) \
zend_async_thread_xlat_put_fn((ctx), (src), (dst))
#define ZEND_ASYNC_THREAD_DEFER_RELEASE(ctx, z) \
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