mirror of
https://github.com/openssl/openssl.git
synced 2024-12-09 05:51:54 +08:00
43 lines
1.7 KiB
C
43 lines
1.7 KiB
C
|
/*
|
||
|
|
* Copyright 1995-2016 The OpenSSL Project Authors. All Rights Reserved.
|
||
|
|
*
|
||
|
|
* Licensed under the OpenSSL license (the "License"). You may not use
|
||
|
|
* this file except in compliance with the License. You can obtain a copy
|
||
|
|
* in the file LICENSE in the source distribution or at
|
||
|
|
* https://www.openssl.org/source/license.html
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include <openssl/crypto.h>
|
||
|
|
|
||
|
|
#define DEFINE_RUN_ONCE(init) \
|
||
|
|
static int init(void); \
|
||
|
|
int init##_ossl_ret_ = 0; \
|
||
|
|
void init##_ossl_(void) \
|
||
|
|
{ \
|
||
|
|
init##_ossl_ret_ = init(); \
|
||
|
|
} \
|
||
|
|
static int init(void)
|
||
|
|
#define DECLARE_RUN_ONCE(init) \
|
||
|
|
extern int init##_ossl_ret_; \
|
||
|
|
void init##_ossl_(void);
|
||
|
|
|
||
|
|
#define DEFINE_RUN_ONCE_STATIC(init) \
|
||
|
|
static int init(void); \
|
||
|
|
static int init##_ossl_ret_ = 0; \
|
||
|
|
static void init##_ossl_(void) \
|
||
|
|
{ \
|
||
|
|
init##_ossl_ret_ = init(); \
|
||
|
|
} \
|
||
|
|
static int init(void)
|
||
|
|
|
||
|
|
/*
|
||
|
|
* RUN_ONCE - use CRYPTO_THREAD_run_once, and check if the init succeeded
|
||
|
|
* @once: pointer to static object of type CRYPTO_ONCE
|
||
|
|
* @init: function name that was previously given to DEFINE_RUN_ONCE,
|
||
|
|
* DEFINE_RUN_ONCE_STATIC or DECLARE_RUN_ONCE.
|
||
|
|
*
|
||
|
|
* The return value is 1 on success or 0 in case of error.
|
||
|
|
*/
|
||
|
|
#define RUN_ONCE(once, init) \
|
||
|
|
(CRYPTO_THREAD_run_once(once, init##_ossl_) ? init##_ossl_ret_ : 0)
|