diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/SConscript | 1 | ||||
| -rw-r--r-- | src/base/random.cc | 48 | ||||
| -rw-r--r-- | src/base/random.hh | 18 | ||||
| -rw-r--r-- | src/python/SConscript | 1 | ||||
| -rw-r--r-- | src/python/swig/random.i | 55 |
5 files changed, 72 insertions, 51 deletions
diff --git a/src/SConscript b/src/SConscript index 6541fa85e..9037f9634 100644 --- a/src/SConscript +++ b/src/SConscript @@ -133,6 +133,7 @@ base_sources = Split(''' python/swig/debug_wrap.cc python/swig/main_wrap.cc python/swig/event_wrap.cc + python/swig/random_wrap.cc python/swig/trace_wrap.cc python/swig/pyevent.cc diff --git a/src/base/random.cc b/src/base/random.cc index 0ccedcb00..ceab337d9 100644 --- a/src/base/random.cc +++ b/src/base/random.cc @@ -40,38 +40,20 @@ #include <cstdlib> #include <cmath> - -#include "sim/param.hh" #include "base/random.hh" -#include "base/trace.hh" using namespace std; -class RandomContext : public ParamContext -{ - public: - RandomContext(const string &_iniSection) - : ::ParamContext(_iniSection) {} - ~RandomContext() {} - - void checkParams(); -}; - -RandomContext paramContext("random"); - -Param<unsigned> -seed(¶mContext, "seed", "seed to random number generator", 1); - -void -RandomContext::checkParams() +uint32_t +getInt32() { - ::srand48(seed); + return mrand48() & 0xffffffff; } -long -getLong() +double +getDouble() { - return mrand48(); + return drand48(); } double @@ -105,21 +87,3 @@ getUniformPos(uint64_t min, uint64_t max) return (uint64_t)m5round(r); } - - -// idea for generating a double from erand48 -double -getDouble() -{ - union { - uint32_t _long[2]; - uint16_t _short[4]; - }; - - _long[0] = mrand48(); - _long[1] = mrand48(); - - return ldexp((double) _short[0], -48) + - ldexp((double) _short[1], -32) + - ldexp((double) _short[2], -16); -} diff --git a/src/base/random.hh b/src/base/random.hh index 40d62da7f..0cd88728d 100644 --- a/src/base/random.hh +++ b/src/base/random.hh @@ -34,7 +34,7 @@ #include "sim/host.hh" -long getLong(); +uint32_t getUInt32(); double getDouble(); double m5random(double r); uint64_t getUniformPos(uint64_t min, uint64_t max); @@ -46,7 +46,7 @@ struct Random; template<> struct Random<int8_t> { static int8_t get() - { return getLong() & (int8_t)-1; } + { return getUInt32() & (int8_t)-1; } static int8_t uniform(int8_t min, int8_t max) { return getUniform(min, max); } @@ -55,7 +55,7 @@ template<> struct Random<int8_t> template<> struct Random<uint8_t> { static uint8_t get() - { return getLong() & (uint8_t)-1; } + { return getUInt32() & (uint8_t)-1; } static uint8_t uniform(uint8_t min, uint8_t max) { return getUniformPos(min, max); } @@ -64,7 +64,7 @@ template<> struct Random<uint8_t> template<> struct Random<int16_t> { static int16_t get() - { return getLong() & (int16_t)-1; } + { return getUInt32() & (int16_t)-1; } static int16_t uniform(int16_t min, int16_t max) { return getUniform(min, max); } @@ -73,7 +73,7 @@ template<> struct Random<int16_t> template<> struct Random<uint16_t> { static uint16_t get() - { return getLong() & (uint16_t)-1; } + { return getUInt32() & (uint16_t)-1; } static uint16_t uniform(uint16_t min, uint16_t max) { return getUniformPos(min, max); } @@ -82,7 +82,7 @@ template<> struct Random<uint16_t> template<> struct Random<int32_t> { static int32_t get() - { return (int32_t)getLong(); } + { return (int32_t)getUInt32(); } static int32_t uniform(int32_t min, int32_t max) { return getUniform(min, max); } @@ -91,7 +91,7 @@ template<> struct Random<int32_t> template<> struct Random<uint32_t> { static uint32_t get() - { return (uint32_t)getLong(); } + { return (uint32_t)getUInt32(); } static uint32_t uniform(uint32_t min, uint32_t max) { return getUniformPos(min, max); } @@ -100,7 +100,7 @@ template<> struct Random<uint32_t> template<> struct Random<int64_t> { static int64_t get() - { return (int64_t)getLong() << 32 || (uint64_t)getLong(); } + { return (int64_t)getUInt32() << 32 || (uint64_t)getUInt32(); } static int64_t uniform(int64_t min, int64_t max) { return getUniform(min, max); } @@ -109,7 +109,7 @@ template<> struct Random<int64_t> template<> struct Random<uint64_t> { static uint64_t get() - { return (uint64_t)getLong() << 32 || (uint64_t)getLong(); } + { return (uint64_t)getUInt32() << 32 || (uint64_t)getUInt32(); } static uint64_t uniform(uint64_t min, uint64_t max) { return getUniformPos(min, max); } diff --git a/src/python/SConscript b/src/python/SConscript index a8104e8cc..61cab45f3 100644 --- a/src/python/SConscript +++ b/src/python/SConscript @@ -108,6 +108,7 @@ def swig_it(basename): swig_it('main') swig_it('debug') swig_it('event') +swig_it('random') swig_it('trace') # Action function to build the zip archive. Uses the PyZipFile module diff --git a/src/python/swig/random.i b/src/python/swig/random.i new file mode 100644 index 000000000..657a59780 --- /dev/null +++ b/src/python/swig/random.i @@ -0,0 +1,55 @@ +/* + * Copyright (c) 2006 The Regents of The University of Michigan + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are + * met: redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer; + * redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution; + * neither the name of the copyright holders nor the names of its + * contributors may be used to endorse or promote products derived from + * this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + * Authors: Nathan Binkert + */ + +%module random + +%include "stdint.i" + +%{ +#include <cstdlib> + +#include "sim/host.hh" + +inline void +seed(uint64_t seed) +{ + ::srand48(seed & ULL(0xffffffffffff)); +} +%} + +%inline %{ +extern void seed(uint64_t seed); +%} + +%wrapper %{ +// fix up module name to reflect the fact that it's inside the m5 package +#undef SWIG_name +#define SWIG_name "m5.internal._random" +%} |