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| author | Pauli <paul.dale@oracle.com> | 2017-09-25 12:04:42 +1000 |
|---|---|---|
| committer | Pauli <paul.dale@oracle.com> | 2017-10-10 08:45:52 +1000 |
| commit | 94683b7acb62a5d99b8b4d66283e6d6dd0007f7a (patch) | |
| tree | 10cec2abdb2f43af401d65c1060c083bb0865fdf /doc | |
| parent | 338ead0ff9b22aecbc3b28e37ea05d142e13ee13 (diff) | |
| download | openssl-94683b7acb62a5d99b8b4d66283e6d6dd0007f7a.tar.gz | |
Add a CRYPTO_atomic_read call which allows an int variable to be read
in an atomic fashion.
Reviewed-by: Rich Salz <rsalz@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/4414)
Diffstat (limited to 'doc')
| -rw-r--r-- | doc/man3/CRYPTO_THREAD_run_once.pod | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/doc/man3/CRYPTO_THREAD_run_once.pod b/doc/man3/CRYPTO_THREAD_run_once.pod index 9a4df1992c..bf4a2f2cef 100644 --- a/doc/man3/CRYPTO_THREAD_run_once.pod +++ b/doc/man3/CRYPTO_THREAD_run_once.pod @@ -4,7 +4,8 @@ CRYPTO_THREAD_run_once, CRYPTO_THREAD_lock_new, CRYPTO_THREAD_read_lock, CRYPTO_THREAD_write_lock, -CRYPTO_THREAD_unlock, CRYPTO_THREAD_lock_free, CRYPTO_atomic_add - OpenSSL thread support +CRYPTO_THREAD_unlock, CRYPTO_THREAD_lock_free, CRYPTO_atomic_add, +CRYPTO_atomic_read - OpenSSL thread support =head1 SYNOPSIS @@ -20,6 +21,7 @@ CRYPTO_THREAD_unlock, CRYPTO_THREAD_lock_free, CRYPTO_atomic_add - OpenSSL threa void CRYPTO_THREAD_lock_free(CRYPTO_RWLOCK *lock); int CRYPTO_atomic_add(int *val, int amount, int *ret, CRYPTO_RWLOCK *lock); + int CRYPTO_atomic_read(int *val, int *ret, CRYPTO_RWLOCK *lock); =head1 DESCRIPTION @@ -74,6 +76,12 @@ operations are supported on the specific platform. Because of this, if a variable is modified by CRYPTO_atomic_add() then CRYPTO_atomic_add() must be the only way that the variable is modified. +=item * + +CRYPTO_atomic_read() atomically reads B<val> and returns the result of +the operation in B<ret>. B<lock> will be locked, unless atomic operations +are supported on the specific platform. + =back =head1 RETURN VALUES |