mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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103 lines
2.8 KiB
C
103 lines
2.8 KiB
C
/* Gnome-Streamer
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* Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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#include <stdio.h>
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#include <unistd.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <fcntl.h>
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#include <string.h>
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#include <glib.h>
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#include <gst/gsttrace.h>
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__inline__ void read_tsc(guint64 *dst) {
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__asm__ __volatile__
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("rdtsc"
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: "=a" (*(guint32 *)dst), "=d" (*(((guint32 *)dst) + 1))
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:
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: "eax", "edx");
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}
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void gst_trace_read_tsc(guint64 *dst) {
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read_tsc(dst);
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}
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GstTrace *_gst_trace_default = NULL;
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gint _gst_trace_on = 1;
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GstTrace *gst_trace_new(guchar *filename,gint size) {
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GstTrace *trace = g_malloc(sizeof(GstTrace));
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g_return_val_if_fail(trace != NULL,NULL);
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trace->filename = g_strdup(filename);
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g_print("opening '%s'\n",trace->filename);
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trace->fd = open(trace->filename,O_RDWR|O_CREAT|O_TRUNC,S_IRUSR|S_IWUSR);
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perror("opening trace file");
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g_return_val_if_fail(trace->fd > 0,NULL);
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trace->buf = g_malloc(size * sizeof(GstTraceEntry));
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g_return_val_if_fail(trace->buf != NULL,NULL);
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trace->bufsize = size;
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trace->bufoffset = 0;
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return trace;
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}
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void gst_trace_destroy(GstTrace *trace) {
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g_return_if_fail(trace != NULL);
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g_return_if_fail(trace->buf != NULL);
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if (gst_trace_get_remaining(trace) > 0)
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gst_trace_flush(trace);
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close(trace->fd);
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g_free(trace->buf);
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g_free(trace);
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}
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void gst_trace_flush(GstTrace *trace) {
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if (!trace) {
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trace = _gst_trace_default;
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if (!trace ) return;
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}
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write(trace->fd,trace->buf,trace->bufoffset * sizeof(GstTraceEntry));
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trace->bufoffset = 0;
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}
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void gst_trace_set_default(GstTrace *trace) {
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g_return_if_fail(trace != NULL);
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_gst_trace_default = trace;
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}
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void _gst_trace_add_entry(GstTrace *trace,guint32 seq,guint32 data,gchar *msg) {
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GstTraceEntry *entry;
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if (!trace) {
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trace = _gst_trace_default;
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if (!trace ) return;
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}
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entry = trace->buf + trace->bufoffset;
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read_tsc(&(entry->timestamp));
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entry->sequence = seq;
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entry->data = data;
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strncpy(entry->message,msg,112);
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trace->bufoffset++;
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gst_trace_flush(trace);
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}
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