diff options
Diffstat (limited to 'src/core/platform.h')
| -rw-r--r-- | src/core/platform.h | 20 |
1 files changed, 16 insertions, 4 deletions
diff --git a/src/core/platform.h b/src/core/platform.h index 35d42339..5739811f 100644 --- a/src/core/platform.h +++ b/src/core/platform.h @@ -1,5 +1,5 @@ // -// Copyright 2020 Staysail Systems, Inc. <info@staysail.tech> +// Copyright 2021 Staysail Systems, Inc. <info@staysail.tech> // Copyright 2018 Capitar IT Group BV <info@capitar.com> // Copyright 2018 Devolutions <info@devolutions.net> // @@ -88,9 +88,11 @@ extern void *nni_zalloc(size_t); // Most implementations can just call free() here. extern void nni_free(void *, size_t); -typedef struct nni_plat_mtx nni_plat_mtx; -typedef struct nni_plat_cv nni_plat_cv; -typedef struct nni_plat_thr nni_plat_thr; +typedef struct nni_plat_mtx nni_plat_mtx; +typedef struct nni_plat_rwlock nni_plat_rwlock; +typedef struct nni_plat_cv nni_plat_cv; +typedef struct nni_plat_thr nni_plat_thr; +typedef struct nni_rwlock nni_rwlock; // // Threading & Synchronization Support @@ -112,6 +114,15 @@ extern void nni_plat_mtx_lock(nni_plat_mtx *); // thread that owned the mutex. extern void nni_plat_mtx_unlock(nni_plat_mtx *); +// read/write locks - these work like mutexes except that multiple readers +// can acquire the lock. These are not safe for recursive use, and it is +// unspecified whether any measures are provided to prevent starvation. +extern void nni_rwlock_init(nni_rwlock *); +extern void nni_rwlock_fini(nni_rwlock *); +extern void nni_rwlock_rdlock(nni_rwlock *); +extern void nni_rwlock_wrlock(nni_rwlock *); +extern void nni_rwlock_unlock(nni_rwlock *); + // nni_plat_cv_init initializes a condition variable. We require a mutex be // supplied with it, and that mutex must always be held when performing any // operations on the condition variable (other than fini.) As with mutexes, an @@ -161,6 +172,7 @@ extern bool nni_plat_thr_is_self(nni_plat_thr *); // should be a short ASCII string. It may or may not be supported -- // this is intended to facilitate debugging. extern void nni_plat_thr_set_name(nni_plat_thr *, const char *); + // // Atomics support. This will evolve over time. // |