#include <signal.h>
#include <poll.h>
#include <errno.h>
+#include "utils.h"
+#include "signal-helper.h"
#define TRACEPOINT_DEFINE
#include "tp.h"
-void create_file(const char *path)
-{
- static bool file_created = false;
- int ret;
-
- if (!path || file_created) {
- return;
- }
-
- ret = creat(path, S_IRWXU);
- if (ret < 0) {
- fprintf(stderr, "Failed to create file %s\n", path);
- return;
- }
-
- (void) close(ret);
- file_created = true;
-}
-
-static
-void wait_on_file(const char *path)
-{
- if (!path) {
- return;
- }
- for (;;) {
- int ret;
- struct stat buf;
-
- ret = stat(path, &buf);
- if (ret == -1 && errno == ENOENT) {
- (void) poll(NULL, 0, 10); /* 10 ms delay */
- continue; /* retry */
- }
- if (ret) {
- perror("stat");
- exit(EXIT_FAILURE);
- }
- break; /* found */
- }
-}
-
int main(int argc, char **argv)
{
unsigned int i, netint;
char text[10] = "test";
double dbl = 2.0;
float flt = 2222.0;
- int nr_iter = 100;
+ int nr_iter = 100, ret = 0, first_event_file_created = 0;
useconds_t nr_usec = 0;
char *after_first_event_file_path = NULL;
char *before_last_event_file_path = NULL;
+ if (set_signal_handler()) {
+ ret = -1;
+ goto end;
+ }
+
if (argc >= 2) {
/*
* If nr_iter is negative, do an infinite tracing loop.
* Wait on synchronization before writing last
* event.
*/
- wait_on_file(before_last_event_file_path);
+ if (before_last_event_file_path) {
+ ret = wait_on_file(before_last_event_file_path);
+ if (ret != 0) {
+ goto end;
+ }
+ }
}
netint = htonl(i);
tracepoint(tp, tptest, i, netint, values, text,
* First loop we create the file if asked to indicate
* that at least one tracepoint has been hit.
*/
- create_file(after_first_event_file_path);
- usleep(nr_usec);
+ if (after_first_event_file_path && first_event_file_created == 0) {
+ ret = create_file(after_first_event_file_path);
+
+ if (ret != 0) {
+ goto end;
+ } else {
+ first_event_file_created = 1;
+ }
+ }
+
+ if (nr_usec) {
+ if (usleep_safe(nr_usec)) {
+ ret = -1;
+ goto end;
+ }
+ }
+ if (should_quit) {
+ break;
+ }
}
- return 0;
+end:
+ exit(!ret ? EXIT_SUCCESS : EXIT_FAILURE);
}