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