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Diffstat (limited to 'external_libs/python/pyzmq-14.7.0/bundled/zeromq/src/random.cpp')
-rw-r--r-- | external_libs/python/pyzmq-14.7.0/bundled/zeromq/src/random.cpp | 61 |
1 files changed, 61 insertions, 0 deletions
diff --git a/external_libs/python/pyzmq-14.7.0/bundled/zeromq/src/random.cpp b/external_libs/python/pyzmq-14.7.0/bundled/zeromq/src/random.cpp new file mode 100644 index 00000000..5c9932b6 --- /dev/null +++ b/external_libs/python/pyzmq-14.7.0/bundled/zeromq/src/random.cpp @@ -0,0 +1,61 @@ +/* + Copyright (c) 2007-2015 Contributors as noted in the AUTHORS file + + This file is part of libzmq, the ZeroMQ core engine in C++. + + libzmq is free software; you can redistribute it and/or modify it under + the terms of the GNU Lesser General Public License (LGPL) as published + by the Free Software Foundation; either version 3 of the License, or + (at your option) any later version. + + As a special exception, the Contributors give you permission to link + this library with independent modules to produce an executable, + regardless of the license terms of these independent modules, and to + copy and distribute the resulting executable under terms of your choice, + provided that you also meet, for each linked independent module, the + terms and conditions of the license of that module. An independent + module is a module which is not derived from or based on this library. + If you modify this library, you must extend this exception to your + version of the library. + + libzmq 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 <stdlib.h> + +#include "platform.hpp" +#if defined ZMQ_HAVE_WINDOWS +#include "windows.hpp" +#else +#include <unistd.h> +#endif + +#include "random.hpp" +#include "stdint.hpp" +#include "clock.hpp" + +void zmq::seed_random () +{ +#if defined ZMQ_HAVE_WINDOWS + int pid = (int) GetCurrentProcessId (); +#else + int pid = (int) getpid (); +#endif + srand ((unsigned int) (clock_t::now_us () + pid)); +} + +uint32_t zmq::generate_random () +{ + // Compensate for the fact that rand() returns signed integer. + uint32_t low = (uint32_t) rand (); + uint32_t high = (uint32_t) rand (); + high <<= (sizeof (int) * 8 - 1); + return high | low; +} + |