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trace: Replace fprintf with error_report and print location 

This replaces fprintf(stderr) with error_report.

This moves local variables to the beginning of the function to comply
with QEMU's coding style.

Suggested-by: Lluís Vilanova <vilanova@ac.upc.edu>
Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
This commit is contained in:
Alexey Kardashevskiy 2014-06-02 16:34:10 +10:00 committed by Stefan Hajnoczi
parent 5b808275f3
commit a35d9be622
1 changed files with 18 additions and 13 deletions
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31
trace/control.c
View File

@ -14,7 +14,7 @@
#ifdef CONFIG_TRACE_FTRACE
#include "trace/ftrace.h"
#endif
#include "qemu/error-report.h"
TraceEvent *trace_event_name(const char *name)
{
@ -100,18 +100,24 @@ void trace_print_events(FILE *stream, fprintf_function stream_printf)
static void trace_init_events(const char *fname)
{
Location loc;
FILE *fp;
char line_buf[1024];
size_t line_idx = 0;
if (fname == NULL) {
return;
}
FILE *fp = fopen(fname, "r");
loc_push_none(&loc);
loc_set_file(fname, 0);
fp = fopen(fname, "r");
if (!fp) {
fprintf(stderr, "error: could not open trace events file '%s': %s\n",
fname, strerror(errno));
error_report("%s", strerror(errno));
exit(1);
}
char line_buf[1024];
while (fgets(line_buf, sizeof(line_buf), fp)) {
loc_set_file(fname, ++line_idx);
size_t len = strlen(line_buf);
if (len > 1) { /* skip empty lines */
line_buf[len - 1] = '\0';
@ -130,13 +136,11 @@ static void trace_init_events(const char *fname)
} else {
TraceEvent *ev = trace_event_name(line_ptr);
if (ev == NULL) {
fprintf(stderr,
"WARNING: trace event '%s' does not exist\n",
line_ptr);
error_report("WARNING: trace event '%s' does not exist",
line_ptr);
} else if (!trace_event_get_state_static(ev)) {
fprintf(stderr,
"WARNING: trace event '%s' is not traceable\n",
line_ptr);
error_report("WARNING: trace event '%s' is not traceable\n",
line_ptr);
} else {
trace_event_set_state_dynamic(ev, enable);
}
@ -144,10 +148,11 @@ static void trace_init_events(const char *fname)
}
}
if (fclose(fp) != 0) {
fprintf(stderr, "error: closing file '%s': %s\n",
fname, strerror(errno));
loc_set_file(fname, 0);
error_report("%s", strerror(errno));
exit(1);
}
loc_pop(&loc);
}
bool trace_init_backends(const char *events, const char *file)