From 4d324c0bf65c615ffbe95b35497353996b97753b Mon Sep 17 00:00:00 2001 From: Vladimir Sementsov-Ogievskiy Date: Mon, 28 Jun 2021 15:11:32 +0300 Subject: [PATCH] introduce QEMU_AUTO_VFREE Introduce a convenient macro, that works for qemu_memalign() like g_autofree works with g_malloc. Signed-off-by: Vladimir Sementsov-Ogievskiy Message-Id: <20210628121133.193984-2-vsementsov@virtuozzo.com> Signed-off-by: Kevin Wolf --- include/qemu/osdep.h | 15 +++++++++++++++ 1 file changed, 15 insertions(+) diff --git a/include/qemu/osdep.h b/include/qemu/osdep.h index c3656b755af..c91a78b5e61 100644 --- a/include/qemu/osdep.h +++ b/include/qemu/osdep.h @@ -386,6 +386,21 @@ void *qemu_anon_ram_alloc(size_t size, uint64_t *align, bool shared, void qemu_vfree(void *ptr); void qemu_anon_ram_free(void *ptr, size_t size); +/* + * It's an analog of GLIB's g_autoptr_cleanup_generic_gfree(), used to define + * g_autofree macro. + */ +static inline void qemu_cleanup_generic_vfree(void *p) +{ + void **pp = (void **)p; + qemu_vfree(*pp); +} + +/* + * Analog of g_autofree, but qemu_vfree is called on cleanup instead of g_free. + */ +#define QEMU_AUTO_VFREE __attribute__((cleanup(qemu_cleanup_generic_vfree))) + /* * Abstraction of PROT_ and MAP_ flags as passed to mmap(), for example, * consumed by qemu_ram_mmap(). -- 2.39.5