> Hi all,
>
> it seems that I am missing the usage of the set of obscure functions:
>
> CRYPTO_set_dynlock_create_callback()
> CRYPTO_set_dynlock_lock_callback()
> CRYPTO_set_dynlock_destroy_callback()
>
> but I have no idea how to initialize those functions - is there
> any example
> on how to do that by using pthreads ?
>
> Ciao,
> Max
Off the top of my head, and untested, but it should give you the idea:
struct CRYPTO_dynlock_value
{
pthread_rwlock_t lock;
};
#ifndef CRYPTO_LOCK
#define CRYPTO_LOCK 0x01
#define CRYPTO_UNLOCK 0x02
#define CRYPTO_READ 0x04
#define CRYPTO_WRITE 0x08
#endif
void locking_callback(int mode, struct CRYPTO_dynlock_value *l,
const char *, int)
{
if(mode==(CRYPTO_LOCK|CRYPTO_READ))
pthread_rwlock_rdlock(&l->lock);
else if(mode==(CRYPTO_LOCK|CRYPTO_WRITE))
pthread_rwlock_wrlock(&l->lock);
else if(mode==(CRYPTO_UNLOCK|CRYPTO_READ))
pthread_rwlock_unlock(&l->lock);
else if(mode==(CRYPTO_UNLOCK|CRYPTO_WRITE))
pthread_rwlock_unlock(&l->lock);
}
struct CRYPTO_dynlock_value *create_callback(const char *, int)
{
CRYPTO_dynlock_value *l=(CRYPTO_dynlock_value *)
malloc(sizeof(CRYPTO_dynlock_value));
pthread_rwlock_init(&l->lock, NULL);
return l;
}
void destroy_callback(struct CRYPTO_dynlock_value *l, const char *, int)
{
pthread_rwlock_destroy(&l->lock);
free(l);
}
void InitDynLocks(void)
{
CRYPTO_set_dynlock_create_callback(create_callback);
CRYPTO_set_dynlock_lock_callback(locking_callback);
CRYPTO_set_dynlock_destroy_callback(destroy_callback);
}
DS
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