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--- Top/csound.c.old 2011-01-30 01:43:37.000000000 -0600
+++ Top/csound.c 2011-01-30 01:46:42.000000000 -0600
@@ -58,7 +58,9 @@
#include "namedins.h"
#include "pvfileio.h"
#include "fftlib.h"
-
+#if defined(__FreeBSD__)
+#include <sys/sysctl.h>
+#endif
#if defined(USE_OPENMP)
#include <omp.h>
#endif
@@ -2641,49 +2643,14 @@
static int getTimeResolution(void)
{
#if defined(HAVE_RDTSC)
- FILE *f;
- char buf[256];
+ size_t size;
+ int timeResolutionSeconds;
+ size = sizeof timeResolutionSeconds;
+ sysctlbyname("hw.clockrate", &timeResolutionSeconds, &size, NULL, 0);
- /* if frequency is not known yet */
- f = fopen("/proc/cpuinfo", "r");
- if (UNLIKELY(f == NULL)) {
- fprintf(stderr, Str("Cannot open /proc/cpuinfo. "
- "Support for RDTSC is not available.\n"));
- return -1;
- }
- /* find CPU frequency */
- while (fgets(buf, 256, f) != NULL) {
- int i;
- char *s = (char*) buf - 1;
-
- buf[255] = '\0'; /* safety */
- if (strlen(buf) < 9) {
- continue; /* too short, skip */
- }
- while (*++s != '\0')
- if (isupper(*s)) {
- *s = tolower(*s); /* convert to lower case */
- }
- if (strncmp(buf, "cpu mhz", 7) != 0) {
- continue; /* check key name */
- }
- s = strchr(buf, ':'); /* find frequency value */
- if (s == NULL) {
- continue; /* invalid entry */
- }
- do {
- s++;
- } while (*s == ' ' || *s == '\t'); /* skip white space */
- i = sscanf(s, "%lf", &timeResolutionSeconds);
- if (i < 1 || timeResolutionSeconds < 1.0) {
- timeResolutionSeconds = -1.0; /* invalid entry */
- continue;
- }
- }
- fclose(f);
if (UNLIKELY(timeResolutionSeconds <= 0.0)) {
fprintf(stderr, Str("No valid CPU frequency entry "
- "was found in /proc/cpuinfo.\n"));
+ "was found.\n"));
return -1;
}
/* MHz -> seconds */
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