*/
#define _LGPL_SOURCE
+#include <getopt.h>
#include <assert.h>
#include <arpa/inet.h>
#include <fcntl.h>
#include <sys/types.h>
#include <unistd.h>
#include <stdbool.h>
+#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 struct option long_options[] =
{
- int ret;
-
- assert(path);
-
- ret = creat(path, S_IRWXU);
- if (ret < 0) {
- fprintf(stderr, "Failed to create file %s\n", path);
- return;
- }
-
- (void) close(ret);
-}
+ /* These options set a flag. */
+ {"iter", required_argument, 0, 'i'},
+ {"wait", required_argument, 0, 'w'},
+ {"sync-after-first-event", required_argument, 0, 'a'},
+ {"sync-before-last-event", required_argument, 0, 'b'},
+ {0, 0, 0, 0}
+};
int main(int argc, char **argv)
{
unsigned int i, netint;
+ int option_index;
+ int option;
long values[] = { 1, 2, 3 };
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 *tmp_file_path = NULL;
- bool file_created = false;
+ char *after_first_event_file_path = NULL;
+ char *before_last_event_file_path = NULL;
- if (argc >= 2) {
- /*
- * If nr_iter is negative, do an infinite tracing loop.
- */
- nr_iter = atoi(argv[1]);
+ while ((option = getopt_long(argc, argv, "i:w:a:b:c:d:",
+ long_options, &option_index)) != -1) {
+ switch (option) {
+ case 'a':
+ after_first_event_file_path = strdup(optarg);
+ break;
+ case 'b':
+ before_last_event_file_path = strdup(optarg);
+ break;
+ case 'i':
+ nr_iter = atoi(optarg);
+ break;
+ case 'w':
+ nr_usec = atoi(optarg);
+ break;
+ case '?':
+ /* getopt_long already printed an error message. */
+ break;
+ default:
+ ret = -1;
+ goto end;
+ }
}
- if (argc >= 3) {
- /* By default, don't wait unless user specifies. */
- nr_usec = atoi(argv[2]);
+ if (optind != argc) {
+ fprintf(stderr, "Error: takes long options only.\n");
+ ret = -1;
+ goto end;
}
- if (argc >= 4) {
- tmp_file_path = argv[3];
+
+ if (set_signal_handler()) {
+ ret = -1;
+ goto end;
}
for (i = 0; nr_iter < 0 || i < nr_iter; i++) {
+ if (nr_iter >= 0 && i == nr_iter - 1) {
+ /*
+ * Wait on synchronization before writing last
+ * event.
+ */
+ 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, strlen(text), dbl,
- flt);
+ tracepoint(tp, tptest, i, netint, values, text,
+ strlen(text), dbl, flt);
/*
- * First loop we create the file if asked to indicate that at least one
- * tracepoint has been hit.
+ * First loop we create the file if asked to indicate
+ * that at least one tracepoint has been hit.
*/
- if (!file_created && tmp_file_path) {
- create_file(tmp_file_path);
- file_created = true;
+ 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;
}
- usleep(nr_usec);
}
- return 0;
+end:
+ free(after_first_event_file_path);
+ free(before_last_event_file_path);
+ exit(!ret ? EXIT_SUCCESS : EXIT_FAILURE);
}