diff options
| author | Ulf Möller <ulf@openssl.org> | 2000-02-24 00:22:17 +0000 |
|---|---|---|
| committer | Ulf Möller <ulf@openssl.org> | 2000-02-24 00:22:17 +0000 |
| commit | b6891e9c3539504856db1ed73334effd26f54536 (patch) | |
| tree | 52ee008f5922e6952aaf57827a5b14ee6eb4b363 /doc | |
| parent | d7f0ab5ff48bb2fe2e777e6aa068fc581a1da32b (diff) | |
CRYPTO_num_locks()
Diffstat (limited to 'doc')
| -rw-r--r-- | doc/crypto/threads.pod | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/doc/crypto/threads.pod b/doc/crypto/threads.pod index 7e9866c12b..6e9460f821 100644 --- a/doc/crypto/threads.pod +++ b/doc/crypto/threads.pod @@ -13,6 +13,8 @@ CRYPTO_set_locking_callback, CRYPTO_set_id_callback - OpenSSL thread support void CRYPTO_set_id_callback(unsigned long (*id_function)(void)); + int CRYPTO_num_locks(void); + =head1 DESCRIPTION OpenSSL can safely be used in multi-threaded applications provided @@ -22,7 +24,7 @@ locking_function(int mode, int type, const char *file, int line) is needed to perform locking on shared data stuctures. Multi-threaded applications will crash at random if it is not set. -locking_function() must be able to handle up to B<CRYPTO_NUM_LOCKS> +locking_function() must be able to handle up to CRYPTO_num_locks() different mutex locks. It sets the B<n>th lock if B<mode> & B<CRYPTO_LOCK>, and releases it otherwise. @@ -33,6 +35,11 @@ id_function(void) is a function that returns a thread ID. It is not needed on Windows nor on platforms where getpid() returns a different ID for each thread. +=RETURN VALUES + +CRYPTO_num_locks() returns the required number of locks. +The other functions return no values. + =NOTE You can find out if OpenSSL was configured with thread support: @@ -54,6 +61,7 @@ Solaris, Irix and Win32. CRYPTO_set_locking_callback() and CRYPTO_set_id_callback() are available in all versions of SSLeay and OpenSSL. +CRYPTO_num_locks() was added in OpenSSL 0.9.4. =head1 SEE ALSO |