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Diffstat (limited to 'src/random.cpp')
-rw-r--r-- | src/random.cpp | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/src/random.cpp b/src/random.cpp new file mode 100644 index 0000000..ee7a7fb --- /dev/null +++ b/src/random.cpp @@ -0,0 +1,39 @@ +/* + Copyright (c) 2007-2011 iMatix Corporation + Copyright (c) 2007-2011 Other contributors as noted in the AUTHORS file + + This file is part of 0MQ. + + 0MQ is free software; you can redistribute it and/or modify it under + the terms of the GNU Lesser General Public License as published by + the Free Software Foundation; either version 3 of the License, or + (at your option) any later version. + + 0MQ is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public License + along with this program. If not, see <http://www.gnu.org/licenses/>. +*/ + +#include "random.hpp" +#include "uuid.hpp" +#include "err.hpp" + +// Here we can use different ways of generating random data, as avialable +// on different platforms. At the moment, we'll assume the UUID is random +// enough to use for that purpose. +void zmq::generate_random (void *buf_, size_t size_) +{ + // Collapsing an UUID into 4 bytes. + zmq_assert (size_ == 4); + uint32_t buff [4]; + generate_uuid ((void*) buff); + uint32_t result = buff [0]; + result ^= buff [1]; + result ^= buff [2]; + result ^= buff [3]; + *((uint32_t*) buf_) = result; +} |