diff options
Diffstat (limited to 'sys/compat/linuxkpi/common/include/linux/cleanup.h')
| -rw-r--r-- | sys/compat/linuxkpi/common/include/linux/cleanup.h | 49 |
1 files changed, 48 insertions, 1 deletions
diff --git a/sys/compat/linuxkpi/common/include/linux/cleanup.h b/sys/compat/linuxkpi/common/include/linux/cleanup.h index 01f234f0cbe7..5bb146f082ed 100644 --- a/sys/compat/linuxkpi/common/include/linux/cleanup.h +++ b/sys/compat/linuxkpi/common/include/linux/cleanup.h @@ -1,7 +1,7 @@ /*- * SPDX-License-Identifier: BSD-2-Clause * - * Copyright (c) 2024 The FreeBSD Foundation + * Copyright (c) 2024-2025 The FreeBSD Foundation * * This software was developed by Björn Zeeb under sponsorship from * the FreeBSD Foundation. @@ -43,4 +43,51 @@ guard_ ## _n ## _t guard_ ## _n ## _ ## __COUNTER__ \ __cleanup(guard_ ## _n ## _destroy) = guard_ ## _n ## _create +#define DEFINE_FREE(_n, _t, _f) \ + static inline void \ + __free_ ## _n(void *p) \ + { \ + _t _T; \ + \ + _T = *(_t *)p; \ + _f; \ + } + +#define __free(_n) __cleanup(__free_##_n) + +/* + * Given this is a _0 version it should likely be broken up into parts. + * But we have no idead what a _1, _2, ... version would do different + * until we see a call. + * This is used for a not-real-type (rcu). We use a bool to "simulate" + * the lock held. Also _T still special, may not always be used, so tag + * with __unused (or better the LinuxKPI __maybe_unused). + */ +#define DEFINE_LOCK_GUARD_0(_n, _lock, _unlock, ...) \ + \ + typedef struct { \ + bool lock; \ + __VA_ARGS__; \ + } guard_ ## _n ## _t; \ + \ + static inline void \ + guard_ ## _n ## _destroy(guard_ ## _n ## _t *_T) \ + { \ + if (_T->lock) { \ + _unlock; \ + } \ + } \ + \ + static inline guard_ ## _n ## _t \ + guard_ ## _n ## _create(void) \ + { \ + guard_ ## _n ## _t _tmp; \ + guard_ ## _n ## _t *_T __maybe_unused; \ + \ + _tmp.lock = true; \ + _T = &_tmp; \ + _lock; \ + return (_tmp); \ + } + #endif /* _LINUXKPI_LINUX_CLEANUP_H */ |