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corrected the rdtsc code, it actually, um, works now ;-)

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Original commit message from CVS:
corrected the rdtsc code, it actually, um, works now ;-)
This commit is contained in:
Erik Walthinsen 2001-05-10 21:44:20 +00:00
parent 6df5d52f72
commit 3cfd332a23
1 changed files with 4 additions and 20 deletions
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24
test/lat.c
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@ -1,24 +1,8 @@
#include <gst/gst.h> #include <gst/gst.h>
#include <stdlib.h> #include <stdlib.h>
__inline__ void lat_read_tsc(guint64 *dst) { #define rdtscll(result) \
//#ifdef HAVE_RDTS __asm__ __volatile__("rdtsc" : "=A" (result) : /* No inputs */ )
/*
__asm__ __volatile__
("rdtsc"
: "=a" (*(guint32 *)dst), "=d" (*(((guint32 *)dst) + 1))
:
: "eax", "edx");
*/
__asm__ __volatile__
("rdtsc"
: "=a" (*(guint32 *)dst), "=d" (*(((guint32 *)dst) + 1))
:
);
//#else
// *dst = 0;
//#endif
}
static guint64 max = 0, min = -1, total = 0; static guint64 max = 0, min = -1, total = 0;
static guint count = 0; static guint count = 0;
@ -28,7 +12,7 @@ static guint mhz = 0;
void handoff_src(GstElement *src, GstBuffer *buf, gpointer user_data) { void handoff_src(GstElement *src, GstBuffer *buf, gpointer user_data) {
guint64 start; guint64 start;
lat_read_tsc(&start); rdtscll(start);
GST_BUFFER_TIMESTAMP(buf) = start; GST_BUFFER_TIMESTAMP(buf) = start;
} }
@ -36,7 +20,7 @@ void handoff_sink(GstElement *sink, GstBuffer *buf, gpointer user_data) {
guint64 end, d, avg; guint64 end, d, avg;
guint avg_ns; guint avg_ns;
lat_read_tsc(&end); rdtscll(end);
d = end - GST_BUFFER_TIMESTAMP(buf); d = end - GST_BUFFER_TIMESTAMP(buf);
if (d > max) max = d; if (d > max) max = d;
if (d < min) min = d; if (d < min) min = d;