Paul Davis
1ff9e8afc0
git-svn-id: svn://localhost/ardour2/branches/3.0@4982 d708f5d6-7413-0410-9779-e7cbd77b26cf
159 lines
3.1 KiB
C++
159 lines
3.1 KiB
C++
/* -*- c-basic-offset: 4 indent-tabs-mode: nil -*- vi:set ts=8 sts=4 sw=4: */
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/*
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Rubber Band
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An audio time-stretching and pitch-shifting library.
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Copyright 2007-2008 Chris Cannam.
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License as
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published by the Free Software Foundation; either version 2 of the
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License, or (at your option) any later version. See the file
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COPYING included with this distribution for more information.
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*/
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#include "sysutils.h"
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#ifdef _WIN32
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#include <windows.h>
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#else /* !_WIN32 */
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#ifdef __APPLE__
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#include <sys/sysctl.h>
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#else /* !__APPLE__, !_WIN32 */
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#include <cstdio>
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#include <cstring>
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#endif /* !__APPLE__, !_WIN32 */
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#endif /* !_WIN32 */
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#include <cstdlib>
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#include <iostream>
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namespace RubberBand {
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bool
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system_is_multiprocessor()
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{
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static bool tested = false, mp = false;
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if (tested) return mp;
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int count = 0;
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#ifdef _WIN32
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SYSTEM_INFO sysinfo;
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GetSystemInfo(&sysinfo);
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count = sysinfo.dwNumberOfProcessors;
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#else /* !_WIN32 */
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#ifdef __APPLE__
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size_t sz = sizeof(count);
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if (sysctlbyname("hw.ncpu", &count, &sz, NULL, 0)) {
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mp = false;
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} else {
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mp = (count > 1);
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}
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#else /* !__APPLE__, !_WIN32 */
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//...
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FILE *cpuinfo = fopen("/proc/cpuinfo", "r");
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if (!cpuinfo) return false;
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char buf[256];
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while (!feof(cpuinfo)) {
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fgets(buf, 256, cpuinfo);
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if (!strncmp(buf, "processor", 9)) {
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++count;
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}
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if (count > 1) break;
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}
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fclose(cpuinfo);
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#endif /* !__APPLE__, !_WIN32 */
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#endif /* !_WIN32 */
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mp = (count > 1);
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tested = true;
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return mp;
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}
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#ifdef _WIN32
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int gettimeofday(struct timeval *tv, void *tz)
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{
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union {
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long long ns100;
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FILETIME ft;
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} now;
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::GetSystemTimeAsFileTime(&now.ft);
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tv->tv_usec = (long)((now.ns100 / 10LL) % 1000000LL);
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tv->tv_sec = (long)((now.ns100 - 116444736000000000LL) / 10000000LL);
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return 0;
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}
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void usleep(unsigned long usec)
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{
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::Sleep(usec == 0 ? 0 : usec < 1000 ? 1 : usec / 1000);
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}
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#endif
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float *allocFloat(float *ptr, int count)
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{
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if (ptr) free((void *)ptr);
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void *allocated;
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#ifndef _WIN32
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#ifndef __APPLE__
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if (posix_memalign(&allocated, 16, count * sizeof(float)))
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#endif
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#endif
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allocated = malloc(count * sizeof(float));
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for (int i = 0; i < count; ++i) ((float *)allocated)[i] = 0.f;
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return (float *)allocated;
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}
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float *allocFloat(int count)
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{
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return allocFloat(0, count);
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}
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void freeFloat(float *ptr)
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{
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if (ptr) free(ptr);
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}
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double *allocDouble(double *ptr, int count)
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{
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if (ptr) free((void *)ptr);
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void *allocated;
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#ifndef _WIN32
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#ifndef __APPLE__
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if (posix_memalign(&allocated, 16, count * sizeof(double)))
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#endif
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#endif
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allocated = malloc(count * sizeof(double));
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for (int i = 0; i < count; ++i) ((double *)allocated)[i] = 0.f;
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return (double *)allocated;
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}
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double *allocDouble(int count)
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{
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return allocDouble(0, count);
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}
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void freeDouble(double *ptr)
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{
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if (ptr) free(ptr);
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}
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}
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