copy from vendor branch, v1.0

git-svn-id: svn://localhost/ardour2/branches/2.0-ongoing@2775 d708f5d6-7413-0410-9779-e7cbd77b26cf

libs/rubberband/src/sysutils.cpp

@@ -0,0 +1,106 @@
+/* -*- 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 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>
+
+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
+
+void 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); 
+}
+
+void usleep(unsigned long usec)
+{
+    ::Sleep(usec == 0 ? 0 : usec < 1000 ? 1 : usec / 1000);
+}
+
+#endif
+
+}
+
+
+