37 #  define DEFINE_RUN_ONCE(init)                   \  argument
38     static int init(void);                     \
39     int init##_ossl_ret_ = 0;                   \
40     void init##_ossl_(void)                     \
42         init##_ossl_ret_ = init();              \
44     static int init(void)
50 #  define DECLARE_RUN_ONCE(init)                  \  argument
51     extern int init##_ossl_ret_;                \
52     void init##_ossl_(void);
69 #  define DEFINE_RUN_ONCE_STATIC(init)            \  argument
70     static int init(void);                     \
71     static int init##_ossl_ret_ = 0;            \
72     static void init##_ossl_(void)              \
74         init##_ossl_ret_ = init();              \
76     static int init(void)
110 #  define DEFINE_RUN_ONCE_STATIC_ALT(initalt, init) \  argument
114         init##_ossl_ret_ = initalt();             \
119  * RUN_ONCE - use CRYPTO_THREAD_run_once, and check if the init succeeded
121  * @init: function name that was previously given to DEFINE_RUN_ONCE,
127  * (*) by convention, since the init function must return 1 on success.
129 #  define RUN_ONCE(once, init)                                            \  argument
130     (CRYPTO_THREAD_run_once(once, init##_ossl_) ? init##_ossl_ret_ : 0)
139  * @init:    primary initialiser function name that was previously given to
145  * (*) by convention, since the init function must return 1 on success.
147 #  define RUN_ONCE_ALT(once, initalt, init)                               \  argument
148     (CRYPTO_THREAD_run_once(once, initalt##_ossl_) ? init##_ossl_ret_ : 0)