2 * Copyright (C) 2011-2012 Julien Desfossez
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License Version 2 as
6 * published by the Free Software Foundation;
8 * This program is distributed in the hope that it will be useful,
9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11 * GNU General Public License for more details.
13 * You should have received a copy of the GNU General Public License along
14 * with this program; if not, write to the Free Software Foundation, Inc.,
15 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
22 #include <babeltrace/babeltrace.h>
23 #include <babeltrace/ctf/events.h>
24 #include <babeltrace/ctf/callbacks.h>
25 #include <babeltrace/ctf/iterator.h>
37 #include <sys/types.h>
41 #include <lttng/lttng.h>
42 #include <lttng/lttngtop-helper.h>
43 #include <babeltrace/lttngtopmmappacketseek.h>
45 #include "lttngtoptypes.h"
47 #include "iostreamtop.h"
48 #include "cursesdisplay.h"
51 #define DEFAULT_FILE_ARRAY_SIZE 1
53 const char *opt_input_path
;
56 struct lttngtop
*copy
;
57 pthread_t display_thread
;
58 pthread_t timer_thread
;
60 unsigned long refresh_display
= 1 * NSEC_PER_SEC
;
61 unsigned long last_display_update
= 0;
64 /* list of FDs available for being read with snapshots */
65 struct mmap_stream_list mmap_list
;
66 GPtrArray
*lttng_consumer_stream_array
;
67 int sessiond_metadata
, consumerd_metadata
;
68 struct lttng_consumer_local_data
*ctx
= NULL
;
69 /* list of snapshots currently not consumed */
70 GPtrArray
*available_snapshots
;
71 sem_t metadata_available
;
74 int metadata_ready
= 0;
82 static struct poptOption long_options
[] = {
83 /* longName, shortName, argInfo, argPtr, value, descrip, argDesc */
84 { "help", 'h', POPT_ARG_NONE
, NULL
, OPT_HELP
, NULL
, NULL
},
85 { "textdump", 't', POPT_ARG_NONE
, NULL
, OPT_TEXTDUMP
, NULL
, NULL
},
86 { NULL
, 0, 0, NULL
, 0, NULL
, NULL
},
89 void *refresh_thread(void *p
)
91 struct mmap_stream
*mmap_info
;
96 bt_list_for_each_entry(mmap_info
, &mmap_list
.head
, list
)
97 helper_kernctl_buffer_flush(mmap_info
->fd
);
101 sleep(refresh_display
/NSEC_PER_SEC
);
105 void *ncurses_display(void *p
)
107 unsigned int current_display_index
= 0;
109 sem_wait(&bootstrap
);
111 * Prevent the 1 second delay when we hit ESC
118 sem_wait(&goodtodisplay
);
119 sem_wait(&pause_sem
);
121 copy
= g_ptr_array_index(copies
, current_display_index
);
123 display(current_display_index
++);
125 sem_post(&goodtoupdate
);
126 sem_post(&pause_sem
);
136 * hook on each event to check the timestamp and refresh the display if
139 enum bt_cb_ret
print_timestamp(struct bt_ctf_event
*call_data
, void *private_data
)
141 unsigned long timestamp
;
143 uint64_t ts_nsec_start
;
145 timestamp
= bt_ctf_get_timestamp(call_data
);
147 start
= format_timestamp(timestamp
);
148 ts_nsec_start
= timestamp
% NSEC_PER_SEC
;
150 printf("%02d:%02d:%02d.%09" PRIu64
" %s\n", start
.tm_hour
,
151 start
.tm_min
, start
.tm_sec
, ts_nsec_start
,
152 bt_ctf_event_name(call_data
));
158 * hook on each event to check the timestamp and refresh the display if
161 enum bt_cb_ret
check_timestamp(struct bt_ctf_event
*call_data
, void *private_data
)
163 unsigned long timestamp
;
165 timestamp
= bt_ctf_get_timestamp(call_data
);
166 if (timestamp
== -1ULL)
169 if (last_display_update
== 0)
170 last_display_update
= timestamp
;
172 if (timestamp
- last_display_update
>= refresh_display
) {
173 sem_wait(&goodtoupdate
);
174 g_ptr_array_add(copies
, get_copy_lttngtop(last_display_update
,
176 sem_post(&goodtodisplay
);
177 sem_post(&bootstrap
);
178 last_display_update
= timestamp
;
183 fprintf(stderr
, "check_timestamp callback error\n");
184 return BT_CB_ERROR_STOP
;
188 * get_perf_counter : get or create and return a perf_counter struct for
189 * either a process or a cpu (only one of the 2 parameters mandatory)
191 struct perfcounter
*get_perf_counter(const char *name
, struct processtop
*proc
,
194 struct perfcounter
*ret
;
204 ret
= g_hash_table_lookup(table
, (gpointer
) name
);
208 ret
= g_new0(struct perfcounter
, 1);
209 /* by default, make it visible in the UI */
211 g_hash_table_insert(table
, (gpointer
) strdup(name
), ret
);
220 void update_perf_value(struct processtop
*proc
, struct cputime
*cpu
,
221 const char *name
, int value
)
223 struct perfcounter
*cpu_perf
, *process_perf
;
225 cpu_perf
= get_perf_counter(name
, NULL
, cpu
);
226 if (cpu_perf
->count
< value
) {
227 process_perf
= get_perf_counter(name
, proc
, NULL
);
228 process_perf
->count
+= value
- cpu_perf
->count
;
229 cpu_perf
->count
= value
;
233 void extract_perf_counter_scope(const struct bt_ctf_event
*event
,
234 const struct bt_definition
*scope
,
235 struct processtop
*proc
,
238 struct bt_definition
const * const *list
= NULL
;
239 const struct bt_definition
*field
;
241 struct perfcounter
*perfcounter
;
249 ret
= bt_ctf_get_field_list(event
, scope
, &list
, &count
);
256 g_hash_table_iter_init(&iter
, global_perf_liszt
);
257 while (g_hash_table_iter_next (&iter
, &key
, (gpointer
) &perfcounter
)) {
258 field
= bt_ctf_get_field(event
, scope
, (char *) key
);
260 int value
= bt_ctf_get_uint64(field
);
261 if (bt_ctf_field_get_error())
263 update_perf_value(proc
, cpu
, (char *) key
, value
);
271 void update_perf_counter(struct processtop
*proc
, const struct bt_ctf_event
*event
)
274 const struct bt_definition
*scope
;
276 cpu
= get_cpu(get_cpu_id(event
));
278 scope
= bt_ctf_get_top_level_scope(event
, BT_STREAM_EVENT_CONTEXT
);
279 extract_perf_counter_scope(event
, scope
, proc
, cpu
);
281 scope
= bt_ctf_get_top_level_scope(event
, BT_STREAM_PACKET_CONTEXT
);
282 extract_perf_counter_scope(event
, scope
, proc
, cpu
);
284 scope
= bt_ctf_get_top_level_scope(event
, BT_EVENT_CONTEXT
);
285 extract_perf_counter_scope(event
, scope
, proc
, cpu
);
288 enum bt_cb_ret
fix_process_table(struct bt_ctf_event
*call_data
,
293 struct processtop
*parent
, *child
;
294 unsigned long timestamp
;
296 timestamp
= bt_ctf_get_timestamp(call_data
);
297 if (timestamp
== -1ULL)
300 pid
= get_context_pid(call_data
);
304 tid
= get_context_tid(call_data
);
308 ppid
= get_context_ppid(call_data
);
312 comm
= get_context_comm(call_data
);
317 /* find or create the current process */
318 child
= find_process_tid(<tngtop
, tid
, comm
);
320 child
= add_proc(<tngtop
, tid
, comm
, timestamp
);
321 update_proc(child
, pid
, tid
, ppid
, comm
);
324 /* find or create the parent */
325 parent
= find_process_tid(<tngtop
, pid
, comm
);
327 parent
= add_proc(<tngtop
, pid
, comm
, timestamp
);
331 /* attach the parent to the current process */
332 child
->threadparent
= parent
;
333 add_thread(parent
, child
);
336 update_perf_counter(child
, call_data
);
341 return BT_CB_ERROR_STOP
;
346 copies
= g_ptr_array_new();
347 global_perf_liszt
= g_hash_table_new(g_str_hash
, g_str_equal
);
349 sem_init(&goodtodisplay
, 0, 0);
350 sem_init(&goodtoupdate
, 0, 1);
351 sem_init(&timer
, 0, 1);
352 sem_init(&bootstrap
, 0, 0);
353 sem_init(&pause_sem
, 0, 1);
354 sem_init(&end_trace_sem
, 0, 0);
356 reset_global_counters();
358 lttngtop
.nbthreads
= 0;
359 lttngtop
.nbfiles
= 0;
361 lttngtop
.process_hash_table
= g_hash_table_new(g_direct_hash
,
363 lttngtop
.process_table
= g_ptr_array_new();
364 lttngtop
.files_table
= g_ptr_array_new();
365 lttngtop
.cpu_table
= g_ptr_array_new();
370 fprintf(fp
, "LTTngTop %s\n\n", VERSION
);
371 fprintf(fp
, "Usage : lttngtop /path/to/trace\n");
375 * Return 0 if caller should continue, < 0 if caller should return
376 * error, > 0 if caller should exit without reporting error.
378 static int parse_options(int argc
, char **argv
)
383 pc
= poptGetContext(NULL
, argc
, (const char **) argv
, long_options
, 0);
384 poptReadDefaultConfig(pc
, 0);
386 while ((opt
= poptGetNextOpt(pc
)) != -1) {
390 ret
= 1; /* exit cleanly */
401 opt_input_path
= poptGetArg(pc
);
410 void iter_trace(struct bt_context
*bt_ctx
)
412 struct bt_ctf_iter
*iter
;
413 struct bt_iter_pos begin_pos
;
414 const struct bt_ctf_event
*event
;
417 begin_pos
.type
= BT_SEEK_BEGIN
;
418 iter
= bt_ctf_iter_create(bt_ctx
, &begin_pos
, NULL
);
421 bt_ctf_iter_add_callback(iter
, 0, NULL
, 0,
425 /* at each event check if we need to refresh */
426 bt_ctf_iter_add_callback(iter
, 0, NULL
, 0,
429 /* at each event, verify the status of the process table */
430 bt_ctf_iter_add_callback(iter
, 0, NULL
, 0,
433 /* to handle the scheduling events */
434 bt_ctf_iter_add_callback(iter
,
435 g_quark_from_static_string("sched_switch"),
436 NULL
, 0, handle_sched_switch
, NULL
, NULL
, NULL
);
437 /* to clean up the process table */
438 bt_ctf_iter_add_callback(iter
,
439 g_quark_from_static_string("sched_process_free"),
440 NULL
, 0, handle_sched_process_free
, NULL
, NULL
, NULL
);
441 /* to get all the process from the statedumps */
442 bt_ctf_iter_add_callback(iter
,
443 g_quark_from_static_string(
444 "lttng_statedump_process_state"),
445 NULL
, 0, handle_statedump_process_state
,
449 bt_ctf_iter_add_callback(iter
,
450 g_quark_from_static_string("exit_syscall"),
451 NULL
, 0, handle_exit_syscall
, NULL
, NULL
, NULL
);
452 bt_ctf_iter_add_callback(iter
,
453 g_quark_from_static_string("sys_write"),
454 NULL
, 0, handle_sys_write
, NULL
, NULL
, NULL
);
455 bt_ctf_iter_add_callback(iter
,
456 g_quark_from_static_string("sys_read"),
457 NULL
, 0, handle_sys_read
, NULL
, NULL
, NULL
);
458 bt_ctf_iter_add_callback(iter
,
459 g_quark_from_static_string("sys_open"),
460 NULL
, 0, handle_sys_open
, NULL
, NULL
, NULL
);
461 bt_ctf_iter_add_callback(iter
,
462 g_quark_from_static_string("sys_close"),
463 NULL
, 0, handle_sys_close
, NULL
, NULL
, NULL
);
464 bt_ctf_iter_add_callback(iter
,
465 g_quark_from_static_string(
466 "lttng_statedump_file_descriptor"),
467 NULL
, 0, handle_statedump_file_descriptor
,
471 while ((event
= bt_ctf_iter_read_event(iter
)) != NULL
) {
472 ret
= bt_iter_next(bt_ctf_get_iter(iter
));
477 /* block until quit, we reached the end of the trace */
478 sem_wait(&end_trace_sem
);
481 bt_ctf_iter_destroy(iter
);
485 * bt_context_add_traces_recursive: Open a trace recursively
486 * (copied from BSD code in converter/babeltrace.c)
488 * Find each trace present in the subdirectory starting from the given
489 * path, and add them to the context. The packet_seek parameter can be
490 * NULL: this specify to use the default format packet_seek.
492 * Return: 0 on success, nonzero on failure.
493 * Unable to open toplevel: failure.
494 * Unable to open some subdirectory or file: warn and continue;
496 int bt_context_add_traces_recursive(struct bt_context
*ctx
, const char *path
,
497 const char *format_str
,
498 void (*packet_seek
)(struct bt_stream_pos
*pos
,
499 size_t offset
, int whence
))
504 char lpath
[PATH_MAX
];
505 char * const paths
[2] = { lpath
, NULL
};
509 * Need to copy path, because fts_open can change it.
510 * It is the pointer array, not the strings, that are constant.
512 strncpy(lpath
, path
, PATH_MAX
);
513 lpath
[PATH_MAX
- 1] = '\0';
515 tree
= fts_open(paths
, FTS_NOCHDIR
| FTS_LOGICAL
, 0);
517 fprintf(stderr
, "[error] [Context] Cannot traverse \"%s\" for reading.\n",
522 trace_ids
= g_array_new(FALSE
, TRUE
, sizeof(int));
524 while ((node
= fts_read(tree
))) {
527 if (!(node
->fts_info
& FTS_D
))
530 dirfd
= open(node
->fts_accpath
, 0);
532 fprintf(stderr
, "[error] [Context] Unable to open trace "
533 "directory file descriptor.\n");
537 metafd
= openat(dirfd
, "metadata", O_RDONLY
);
556 trace_id
= bt_context_add_trace(ctx
,
557 node
->fts_accpath
, format_str
,
558 packet_seek
, NULL
, NULL
);
560 fprintf(stderr
, "[warning] [Context] opening trace \"%s\" from %s "
561 "for reading.\n", node
->fts_accpath
, path
);
562 /* Allow to skip erroneous traces. */
565 g_array_append_val(trace_ids
, trace_id
);
569 g_array_free(trace_ids
, TRUE
);
576 static int check_field_requirements(const struct bt_ctf_field_decl
*const * field_list
,
577 int field_cnt
, int *tid_check
, int *pid_check
,
578 int *procname_check
, int *ppid_check
)
581 struct perfcounter
*global
;
584 for (j
= 0; j
< field_cnt
; j
++) {
585 name
= bt_ctf_get_decl_field_name(field_list
[j
]);
586 if (*tid_check
== 0) {
587 if (strncmp(name
, "tid", 3) == 0)
590 if (*pid_check
== 0) {
591 if (strncmp(name
, "pid", 3) == 0)
594 if (*ppid_check
== 0) {
595 if (strncmp(name
, "ppid", 4) == 0)
598 if (*procname_check
== 0) {
599 if (strncmp(name
, "procname", 8) == 0)
602 if (strncmp(name
, "perf_", 5) == 0) {
603 global
= g_hash_table_lookup(global_perf_liszt
, (gpointer
) name
);
605 global
= g_new0(struct perfcounter
, 1);
606 /* by default, sort on the first perf context */
607 if (g_hash_table_size(global_perf_liszt
) == 0)
610 g_hash_table_insert(global_perf_liszt
, (gpointer
) strdup(name
), global
);
615 if (*tid_check
== 1 && *pid_check
== 1 && *ppid_check
== 1 &&
616 *procname_check
== 1)
623 * check_requirements: check if the required context informations are available
625 * If each mandatory context information is available for at least in one
626 * event, return 0 otherwise return -1.
628 int check_requirements(struct bt_context
*ctx
)
630 unsigned int i
, evt_cnt
, field_cnt
;
631 struct bt_ctf_event_decl
*const * evt_list
;
632 const struct bt_ctf_field_decl
*const * field_list
;
635 int procname_check
= 0;
639 bt_ctf_get_event_decl_list(0, ctx
, &evt_list
, &evt_cnt
);
640 for (i
= 0; i
< evt_cnt
; i
++) {
641 bt_ctf_get_decl_fields(evt_list
[i
], BT_STREAM_EVENT_CONTEXT
,
642 &field_list
, &field_cnt
);
643 ret
= check_field_requirements(field_list
, field_cnt
,
644 &tid_check
, &pid_check
, &procname_check
,
647 bt_ctf_get_decl_fields(evt_list
[i
], BT_EVENT_CONTEXT
,
648 &field_list
, &field_cnt
);
649 ret
= check_field_requirements(field_list
, field_cnt
,
650 &tid_check
, &pid_check
, &procname_check
,
653 bt_ctf_get_decl_fields(evt_list
[i
], BT_STREAM_PACKET_CONTEXT
,
654 &field_list
, &field_cnt
);
655 ret
= check_field_requirements(field_list
, field_cnt
,
656 &tid_check
, &pid_check
, &procname_check
,
660 if (tid_check
== 0) {
662 fprintf(stderr
, "[error] missing tid context information\n");
664 if (pid_check
== 0) {
666 fprintf(stderr
, "[error] missing pid context information\n");
668 if (ppid_check
== 0) {
670 fprintf(stderr
, "[error] missing ppid context information\n");
672 if (procname_check
== 0) {
674 fprintf(stderr
, "[error] missing procname context information\n");
680 ssize_t
read_subbuffer(struct lttng_consumer_stream
*kconsumerd_fd
,
681 struct lttng_consumer_local_data
*ctx
)
686 int infd
= helper_get_lttng_consumer_stream_wait_fd(kconsumerd_fd
);
688 if (helper_get_lttng_consumer_stream_output(kconsumerd_fd
) == LTTNG_EVENT_SPLICE
) {
689 /* Get the next subbuffer */
690 err
= helper_kernctl_get_next_subbuf(infd
);
693 perror("Reserving sub buffer failed (everything is normal, "
694 "it is due to concurrency)");
697 /* read the whole subbuffer */
698 err
= helper_kernctl_get_padded_subbuf_size(infd
, &len
);
701 perror("Getting sub-buffer len failed.");
705 /* splice the subbuffer to the tracefile */
706 ret
= helper_lttng_consumer_on_read_subbuffer_splice(ctx
, kconsumerd_fd
, len
);
709 * display the error but continue processing to try
710 * to release the subbuffer
712 fprintf(stderr
,"Error splicing to tracefile\n");
714 err
= helper_kernctl_put_next_subbuf(infd
);
717 perror("Reserving sub buffer failed (everything is normal, "
718 "it is due to concurrency)");
721 sem_post(&metadata_available
);
728 int on_update_fd(int key
, uint32_t state
)
730 /* let the lib handle the metadata FD */
731 if (key
== sessiond_metadata
)
736 int on_recv_fd(struct lttng_consumer_stream
*kconsumerd_fd
)
739 struct mmap_stream
*new_mmap_stream
;
741 /* Opening the tracefile in write mode */
742 if (helper_get_lttng_consumer_stream_path_name(kconsumerd_fd
) != NULL
) {
743 ret
= open(helper_get_lttng_consumer_stream_path_name(kconsumerd_fd
),
744 O_WRONLY
|O_CREAT
|O_TRUNC
, S_IRWXU
|S_IRWXG
|S_IRWXO
);
749 helper_set_lttng_consumer_stream_out_fd(kconsumerd_fd
, ret
);
752 if (helper_get_lttng_consumer_stream_output(kconsumerd_fd
) == LTTNG_EVENT_MMAP
) {
753 new_mmap_stream
= malloc(sizeof(struct mmap_stream
));
754 new_mmap_stream
->fd
= helper_get_lttng_consumer_stream_wait_fd(
756 bt_list_add(&new_mmap_stream
->list
, &mmap_list
.head
);
758 g_ptr_array_add(lttng_consumer_stream_array
, kconsumerd_fd
);
759 /* keep mmap FDs internally */
762 consumerd_metadata
= helper_get_lttng_consumer_stream_wait_fd(kconsumerd_fd
);
763 sessiond_metadata
= helper_get_lttng_consumer_stream_key(kconsumerd_fd
);
771 void live_consume(struct bt_context
**bt_ctx
)
775 if (!metadata_ready
) {
776 sem_wait(&metadata_available
);
777 if (access("/tmp/livesession/kernel/metadata", F_OK
) != 0) {
778 fprintf(stderr
,"no metadata\n");
782 metadata_fp
= fopen("/tmp/livesession/kernel/metadata", "r");
786 *bt_ctx
= bt_context_create();
787 ret
= bt_context_add_trace(*bt_ctx
, NULL
, "ctf",
788 lttngtop_ctf_packet_seek
, &mmap_list
, metadata_fp
);
790 printf("Error adding trace\n");
800 int setup_consumer(char *command_sock_path
, pthread_t
*threads
,
801 struct lttng_consumer_local_data
*ctx
)
805 ctx
= helper_lttng_consumer_create(HELPER_LTTNG_CONSUMER_KERNEL
,
806 read_subbuffer
, NULL
, on_recv_fd
, on_update_fd
);
810 unlink(command_sock_path
);
811 helper_lttng_consumer_set_command_sock_path(ctx
, command_sock_path
);
812 helper_lttng_consumer_init();
814 /* Create the thread to manage the receive of fd */
815 ret
= pthread_create(&threads
[0], NULL
, helper_lttng_consumer_thread_receive_fds
,
818 perror("pthread_create receive fd");
821 /* Create thread to manage the polling/writing of traces */
822 ret
= pthread_create(&threads
[1], NULL
, helper_lttng_consumer_thread_poll_fds
,
825 perror("pthread_create poll fd");
833 void *setup_live_tracing()
835 struct lttng_domain dom
;
836 struct lttng_channel chan
;
837 char *channel_name
= "mmapchan";
838 struct lttng_event ev
;
840 char *command_sock_path
= "/tmp/consumerd_sock";
841 static pthread_t threads
[2]; /* recv_fd, poll */
842 struct lttng_event_context kctxpid
, kctxcomm
, kctxppid
, kctxtid
;
844 struct lttng_handle
*handle
;
846 BT_INIT_LIST_HEAD(&mmap_list
.head
);
848 lttng_consumer_stream_array
= g_ptr_array_new();
850 if ((ret
= setup_consumer(command_sock_path
, threads
, ctx
)) < 0) {
851 fprintf(stderr
,"error setting up consumer\n");
855 available_snapshots
= g_ptr_array_new();
857 /* setup the session */
858 dom
.type
= LTTNG_DOMAIN_KERNEL
;
860 ret
= unlink("/tmp/livesession");
862 lttng_destroy_session("test");
863 if ((ret
= lttng_create_session("test", "/tmp/livesession")) < 0) {
864 fprintf(stderr
,"error creating the session : %s\n",
865 helper_lttcomm_get_readable_code(ret
));
869 if ((handle
= lttng_create_handle("test", &dom
)) == NULL
) {
870 fprintf(stderr
,"error creating handle\n");
874 if ((ret
= lttng_register_consumer(handle
, command_sock_path
)) < 0) {
875 fprintf(stderr
,"error registering consumer : %s\n",
876 helper_lttcomm_get_readable_code(ret
));
880 strcpy(chan
.name
, channel_name
);
881 chan
.attr
.overwrite
= 0;
882 // chan.attr.subbuf_size = 32768;
883 chan
.attr
.subbuf_size
= 1048576; /* 1MB */
884 chan
.attr
.num_subbuf
= 4;
885 chan
.attr
.switch_timer_interval
= 0;
886 chan
.attr
.read_timer_interval
= 200;
887 chan
.attr
.output
= LTTNG_EVENT_MMAP
;
889 if ((ret
= lttng_enable_channel(handle
, &chan
)) < 0) {
890 fprintf(stderr
,"error creating channel : %s\n",
891 helper_lttcomm_get_readable_code(ret
));
895 memset(&ev
, '\0', sizeof(struct lttng_event
));
896 //sprintf(ev.name, "sched_switch");
897 ev
.type
= LTTNG_EVENT_TRACEPOINT
;
898 if ((ret
= lttng_enable_event(handle
, &ev
, channel_name
)) < 0) {
899 fprintf(stderr
,"error enabling event : %s\n",
900 helper_lttcomm_get_readable_code(ret
));
904 ev
.type
= LTTNG_EVENT_SYSCALL
;
905 if ((ret
= lttng_enable_event(handle
, &ev
, channel_name
)) < 0) {
906 fprintf(stderr
,"error enabling syscalls : %s\n",
907 helper_lttcomm_get_readable_code(ret
));
911 kctxpid
.ctx
= LTTNG_EVENT_CONTEXT_PID
;
912 lttng_add_context(handle
, &kctxpid
, NULL
, NULL
);
913 kctxppid
.ctx
= LTTNG_EVENT_CONTEXT_PPID
;
914 lttng_add_context(handle
, &kctxppid
, NULL
, NULL
);
915 kctxcomm
.ctx
= LTTNG_EVENT_CONTEXT_PROCNAME
;
916 lttng_add_context(handle
, &kctxcomm
, NULL
, NULL
);
917 kctxtid
.ctx
= LTTNG_EVENT_CONTEXT_TID
;
918 lttng_add_context(handle
, &kctxtid
, NULL
, NULL
);
920 if ((ret
= lttng_start_tracing("test")) < 0) {
921 fprintf(stderr
,"error starting tracing : %s\n",
922 helper_lttcomm_get_readable_code(ret
));
926 helper_kernctl_buffer_flush(consumerd_metadata
);
928 /* block until metadata is ready */
929 sem_init(&metadata_available
, 0, 0);
935 int main(int argc
, char **argv
)
938 struct bt_context
*bt_ctx
= NULL
;
940 ret
= parse_options(argc
, argv
);
942 fprintf(stdout
, "Error parsing options.\n\n");
945 } else if (ret
> 0) {
949 if (!opt_input_path
) {
950 setup_live_tracing();
953 pthread_create(&display_thread
, NULL
, ncurses_display
, (void *) NULL
);
954 pthread_create(&timer_thread
, NULL
, refresh_thread
, (void *) NULL
);
956 live_consume(&bt_ctx
);
960 pthread_join(display_thread
, NULL
);
961 pthread_join(timer_thread
, NULL
);
963 lttng_stop_tracing("test");
964 lttng_destroy_session("test");
970 bt_ctx
= bt_context_create();
971 ret
= bt_context_add_traces_recursive(bt_ctx
, opt_input_path
, "ctf", NULL
);
973 fprintf(stderr
, "[error] Opening the trace\n");
977 ret
= check_requirements(bt_ctx
);
979 fprintf(stderr
, "[error] some mandatory contexts were missing, exiting.\n");
982 pthread_create(&display_thread
, NULL
, ncurses_display
, (void *) NULL
);
983 pthread_create(&timer_thread
, NULL
, refresh_thread
, (void *) NULL
);
988 pthread_join(display_thread
, NULL
);
989 pthread_join(timer_thread
, NULL
);
994 bt_context_put(bt_ctx
);