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CRYPTO_LOCK(3) FreeBSD Library Functions Manual CRYPTO_LOCK(3) NAME CRYPTO_lock, CRYPTO_w_lock, CRYPTO_w_unlock, CRYPTO_r_lock, CRYPTO_r_unlock, CRYPTO_add - thread support SYNOPSIS #include <openssl/crypto.h> void CRYPTO_lock(int mode, int type, const char *file, int line); int CRYPTO_add(int *p, int amount, int type); #define CRYPTO_w_lock(type) \ CRYPTO_lock(CRYPTO_LOCK|CRYPTO_WRITE, type, __FILE__, __LINE__) #define CRYPTO_w_unlock(type) \ CRYPTO_lock(CRYPTO_UNLOCK|CRYPTO_WRITE, type, __FILE__, __LINE__) #define CRYPTO_r_lock(type) \ CRYPTO_lock(CRYPTO_LOCK|CRYPTO_READ, type, __FILE__, __LINE__) #define CRYPTO_r_unlock(type) \ CRYPTO_lock(CRYPTO_UNLOCK|CRYPTO_READ, type, __FILE__, __LINE__) DESCRIPTION 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. SEE ALSO crypto(3) HISTORY CRYPTO_lock(), CRYPTO_w_lock(), CRYPTO_w_unlock(), CRYPTO_r_lock(), and CRYPTO_r_unlock() first appeared in SSLeay 0.6.0. CRYPTO_add() first appeared in SSLeay 0.6.2. These functions have been available since OpenBSD 2.4. FreeBSD 14.1-RELEASE-p8 March 14, 2024 FreeBSD 14.1-RELEASE-p8