libressl-CRYPTO_lock3
Thread support
Usage
Crypto Library
(libcrypto,
-lcrypto)
void
int
Overview
These functions are obsolete.
CRYPTO_lock() locks or unlocks a mutex lock.
mode is a bitfield describing what should be done with the lock. For each call, either CRYPTO_LOCK or CRYPTO_UNLOCK must be included. In the LibreSSL implementation, CRYPTO_READ and CRYPTO_WRITE are ignored.
type is a number in the range 0 <= type < CRYPTO_NUM_LOCKS identifying a particular lock. Currently, the value of CRYPTO_NUM_LOCKS is 41.
The file and line arguments are ignored.
In the LibreSSL implementation, CRYPTO_lock() is a wrapper around pthread_mutex_lock(3) and pthread_mutex_unlock(3).
CRYPTO_add() locks the lock number type, adds amount to *p, and unlocks the lock number type again.
Return values
CRYPTO_add() returns the new value of *p.