Return to control.c CVS log

Up to [Qemu by Fabrice Bellard] / qemu / trace

Annotation of qemu/trace/control.c, revision 1.1.1.1

1.1       root        1: /*
                      2:  * Interface for configuring and controlling the state of tracing events.
                      3:  *
                      4:  * Copyright (C) 2011 Lluís Vilanova <[email protected]>
                      5:  *
                      6:  * This work is licensed under the terms of the GNU GPL, version 2.  See
                      7:  * the COPYING file in the top-level directory.
                      8:  */
                      9: 
                     10: #include "trace/control.h"
                     11: 
                     12: 
                     13: void trace_backend_init_events(const char *fname)
                     14: {
                     15:     if (fname == NULL) {
                     16:         return;
                     17:     }
                     18: 
                     19:     FILE *fp = fopen(fname, "r");
                     20:     if (!fp) {
                     21:         fprintf(stderr, "error: could not open trace events file '%s': %s\n",
                     22:                 fname, strerror(errno));
                     23:         exit(1);
                     24:     }
                     25:     char line_buf[1024];
                     26:     while (fgets(line_buf, sizeof(line_buf), fp)) {
                     27:         size_t len = strlen(line_buf);
                     28:         if (len > 1) {              /* skip empty lines */
                     29:             line_buf[len - 1] = '\0';
                     30:             if (!trace_event_set_state(line_buf, true)) {
                     31:                 fprintf(stderr,
                     32:                         "error: trace event '%s' does not exist\n", line_buf);
                     33:                 exit(1);
                     34:             }
                     35:         }
                     36:     }
                     37:     if (fclose(fp) != 0) {
                     38:         fprintf(stderr, "error: closing file '%s': %s\n",
                     39:                 fname, strerror(errno));
                     40:         exit(1);
                     41:     }
                     42: }

This archive runs on limited infrastructure. Preserving old code on modern bandwidth. Automated agents are requested to crawl responsibly.