begin strace-like

Signed-off-by: Julien Desfossez <jdesfossez@efficios.com>

diff --git a/src/lttngtop.c b/src/lttngtop.c
index 47e835ec98ea5d7a5a5fca4b12d8ba568532af14..9050eaa6a837ab1d35477d1c4b61764428639261 100644 (file)
--- a/src/lttngtop.c
+++ b/src/lttngtop.c
@@ -51,7 +51,9 @@
 #define DEFAULT_FILE_ARRAY_SIZE 1
 
 const char *opt_input_path;
-int opt_textdump;
+static int opt_textdump;
+static int opt_pid;
+static int opt_child;
 
 int quit = 0;
 
@@ -76,12 +78,16 @@ enum {
        OPT_NONE = 0,
        OPT_HELP,
        OPT_TEXTDUMP,
+       OPT_PID,
+       OPT_CHILD,
 };
 
 static struct poptOption long_options[] = {
        /* longName, shortName, argInfo, argPtr, value, descrip, argDesc */
        { "help", 'h', POPT_ARG_NONE, NULL, OPT_HELP, NULL, NULL },
        { "textdump", 't', POPT_ARG_NONE, NULL, OPT_TEXTDUMP, NULL, NULL },
+       { "child", 'f', POPT_ARG_NONE, NULL, OPT_CHILD, NULL, NULL },
+       { "pid", 'p', POPT_ARG_INT, &opt_pid, OPT_PID, NULL, NULL },
        { NULL, 0, 0, NULL, 0, NULL, NULL },
 };
 
@@ -150,17 +156,29 @@ enum bt_cb_ret print_timestamp(struct bt_ctf_event *call_data, void *private_dat
        unsigned long timestamp;
        struct tm start;
        uint64_t ts_nsec_start;
+       int pid;
 
        timestamp = bt_ctf_get_timestamp(call_data);
 
        start = format_timestamp(timestamp);
        ts_nsec_start = timestamp % NSEC_PER_SEC;
 
-       printf("%02d:%02d:%02d.%09" PRIu64 " %s\n", start.tm_hour,
+       pid = get_context_pid(call_data);
+       if (pid == -1ULL && opt_pid) {
+               goto error;
+       }
+       
+       if (opt_pid && opt_pid != pid)
+               goto end;
+
+       printf("%02d:%02d:%02d.%09" PRIu64 " %d : %s\n", start.tm_hour,
                        start.tm_min, start.tm_sec, ts_nsec_start,
-                       bt_ctf_event_name(call_data));
+                       pid, bt_ctf_event_name(call_data));
 
+end:
        return BT_CB_OK;
+error:
+       return BT_CB_ERROR_STOP;
 }
 
 /*
@@ -412,7 +430,14 @@ static int parse_options(int argc, char **argv)
                                goto end;
                        case OPT_TEXTDUMP:
                                opt_textdump = 1;
-                               goto end;
+                               break;
+                       case OPT_CHILD:
+                               opt_textdump = 1;
+                               opt_child = 1;
+                               break;
+                       case OPT_PID:
+                               opt_textdump = 1;
+                               break;
                        default:
                                ret = -EINVAL;
                                goto end;
@@ -439,6 +464,9 @@ void iter_trace(struct bt_context *bt_ctx)
        iter = bt_ctf_iter_create(bt_ctx, &begin_pos, NULL);
 
        if (opt_textdump) {
+               if (opt_pid) {
+                       printf("PID : %d, Child : %d\n", opt_pid, opt_child);
+               }
                bt_ctf_iter_add_callback(iter, 0, NULL, 0,
                                print_timestamp,
                                NULL, NULL, NULL);