1 /* 2 * Copyright 2023-2024 The OpenSSL Project Authors. All Rights Reserved. 3 * 4 * Licensed under the Apache License 2.0 (the "License"). You may not use 5 * this file except in compliance with the License. You can obtain a copy 6 * in the file LICENSE in the source distribution or at 7 * https://www.openssl.org/source/license.html 8 */ 9 10 #ifndef OPENSSL_RCU_H 11 # define OPENSSL_RCU_H 12 # pragma once 13 14 #include "crypto/context.h" 15 16 typedef void (*rcu_cb_fn)(void *data); 17 18 typedef struct rcu_lock_st CRYPTO_RCU_LOCK; 19 20 CRYPTO_RCU_LOCK *ossl_rcu_lock_new(int num_writers, OSSL_LIB_CTX *ctx); 21 void ossl_rcu_lock_free(CRYPTO_RCU_LOCK *lock); 22 void ossl_rcu_read_lock(CRYPTO_RCU_LOCK *lock); 23 void ossl_rcu_write_lock(CRYPTO_RCU_LOCK *lock); 24 void ossl_rcu_write_unlock(CRYPTO_RCU_LOCK *lock); 25 void ossl_rcu_read_unlock(CRYPTO_RCU_LOCK *lock); 26 void ossl_synchronize_rcu(CRYPTO_RCU_LOCK *lock); 27 int ossl_rcu_call(CRYPTO_RCU_LOCK *lock, rcu_cb_fn cb, void *data); 28 void *ossl_rcu_uptr_deref(void **p); 29 void ossl_rcu_assign_uptr(void **p, void **v); 30 #define ossl_rcu_deref(p) ossl_rcu_uptr_deref((void **)p) 31 #define ossl_rcu_assign_ptr(p,v) ossl_rcu_assign_uptr((void **)p, (void **)v) 32 33 #endif 34
