[331] | 1 | /*
|
---|
| 2 | * Copyright 1995-2016 The OpenSSL Project Authors. All Rights Reserved.
|
---|
| 3 | *
|
---|
| 4 | * Licensed under the OpenSSL license (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 | #include <openssl/crypto.h>
|
---|
| 11 |
|
---|
| 12 | #define DEFINE_RUN_ONCE(init) \
|
---|
| 13 | static int init(void); \
|
---|
| 14 | int init##_ossl_ret_ = 0; \
|
---|
| 15 | void init##_ossl_(void) \
|
---|
| 16 | { \
|
---|
| 17 | init##_ossl_ret_ = init(); \
|
---|
| 18 | } \
|
---|
| 19 | static int init(void)
|
---|
| 20 | #define DECLARE_RUN_ONCE(init) \
|
---|
| 21 | extern int init##_ossl_ret_; \
|
---|
| 22 | void init##_ossl_(void);
|
---|
| 23 |
|
---|
| 24 | #define DEFINE_RUN_ONCE_STATIC(init) \
|
---|
| 25 | static int init(void); \
|
---|
| 26 | static int init##_ossl_ret_ = 0; \
|
---|
| 27 | static void init##_ossl_(void) \
|
---|
| 28 | { \
|
---|
| 29 | init##_ossl_ret_ = init(); \
|
---|
| 30 | } \
|
---|
| 31 | static int init(void)
|
---|
| 32 |
|
---|
| 33 | /*
|
---|
| 34 | * RUN_ONCE - use CRYPTO_THREAD_run_once, and check if the init succeeded
|
---|
| 35 | * @once: pointer to static object of type CRYPTO_ONCE
|
---|
| 36 | * @init: function name that was previously given to DEFINE_RUN_ONCE,
|
---|
| 37 | * DEFINE_RUN_ONCE_STATIC or DECLARE_RUN_ONCE. This function
|
---|
| 38 | * must return 1 for success or 0 for failure.
|
---|
| 39 | *
|
---|
| 40 | * The return value is 1 on success (*) or 0 in case of error.
|
---|
| 41 | *
|
---|
| 42 | * (*) by convention, since the init function must return 1 on success.
|
---|
| 43 | */
|
---|
| 44 | #define RUN_ONCE(once, init) \
|
---|
| 45 | (CRYPTO_THREAD_run_once(once, init##_ossl_) ? init##_ossl_ret_ : 0)
|
---|