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CRYPTO_num_locks()

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This commit is contained in:
Ulf Möller 2000-02-24 00:22:17 +00:00
parent d7f0ab5ff4
commit b6891e9c35
1 changed files with 9 additions and 1 deletions
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10
doc/crypto/threads.pod
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@ -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)); void CRYPTO_set_id_callback(unsigned long (*id_function)(void));
int CRYPTO_num_locks(void);
=head1 DESCRIPTION =head1 DESCRIPTION
OpenSSL can safely be used in multi-threaded applications provided 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 needed to perform locking on shared data stuctures. Multi-threaded
applications will crash at random if it is not set. 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> & different mutex locks. It sets the B<n>th lock if B<mode> &
B<CRYPTO_LOCK>, and releases it otherwise. 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 needed on Windows nor on platforms where getpid() returns a different
ID for each thread. ID for each thread.
=RETURN VALUES
CRYPTO_num_locks() returns the required number of locks.
The other functions return no values.
=NOTE =NOTE
You can find out if OpenSSL was configured with thread support: 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 CRYPTO_set_locking_callback() and CRYPTO_set_id_callback() are
available in all versions of SSLeay and OpenSSL. available in all versions of SSLeay and OpenSSL.
CRYPTO_num_locks() was added in OpenSSL 0.9.4.
=head1 SEE ALSO =head1 SEE ALSO