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
;
58 struct lttngtop
*copy
;
59 pthread_t display_thread
;
60 pthread_t timer_thread
;
62 unsigned long refresh_display
= 1 * NSEC_PER_SEC
;
63 unsigned long last_display_update
= 0;
65 /* list of FDs available for being read with snapshots */
66 struct mmap_stream_list mmap_list
;
67 GPtrArray
*lttng_consumer_stream_array
;
68 int sessiond_metadata
, consumerd_metadata
;
69 struct lttng_consumer_local_data
*ctx
= NULL
;
70 /* list of snapshots currently not consumed */
71 GPtrArray
*available_snapshots
;
72 sem_t metadata_available
;
75 int metadata_ready
= 0;
83 static struct poptOption long_options
[] = {
84 /* longName, shortName, argInfo, argPtr, value, descrip, argDesc */
85 { "help", 'h', POPT_ARG_NONE
, NULL
, OPT_HELP
, NULL
, NULL
},
86 { "textdump", 't', POPT_ARG_NONE
, NULL
, OPT_TEXTDUMP
, NULL
, NULL
},
87 { NULL
, 0, 0, NULL
, 0, NULL
, NULL
},
90 void *refresh_thread(void *p
)
92 struct mmap_stream
*mmap_info
;
98 sem_post(&goodtodisplay
);
101 bt_list_for_each_entry(mmap_info
, &mmap_list
.head
, list
)
102 helper_kernctl_buffer_flush(mmap_info
->fd
);
103 sem_wait(&pause_sem
);
104 sem_post(&pause_sem
);
106 sleep(refresh_display
/NSEC_PER_SEC
);
110 void *ncurses_display(void *p
)
112 unsigned int current_display_index
= 0;
114 sem_wait(&bootstrap
);
116 * Prevent the 1 second delay when we hit ESC
123 sem_wait(&goodtodisplay
);
124 sem_wait(&pause_sem
);
132 copy
= g_ptr_array_index(copies
, current_display_index
);
134 display(current_display_index
++);
136 sem_post(&goodtoupdate
);
137 sem_post(&pause_sem
);
142 * hook on each event to check the timestamp and refresh the display if
145 enum bt_cb_ret
print_timestamp(struct bt_ctf_event
*call_data
, void *private_data
)
147 unsigned long timestamp
;
149 uint64_t ts_nsec_start
;
151 timestamp
= bt_ctf_get_timestamp(call_data
);
153 start
= format_timestamp(timestamp
);
154 ts_nsec_start
= timestamp
% NSEC_PER_SEC
;
156 printf("%02d:%02d:%02d.%09" PRIu64
" %s\n", start
.tm_hour
,
157 start
.tm_min
, start
.tm_sec
, ts_nsec_start
,
158 bt_ctf_event_name(call_data
));
164 * hook on each event to check the timestamp and refresh the display if
167 enum bt_cb_ret
check_timestamp(struct bt_ctf_event
*call_data
, void *private_data
)
169 unsigned long timestamp
;
171 timestamp
= bt_ctf_get_timestamp(call_data
);
172 if (timestamp
== -1ULL)
175 if (last_display_update
== 0)
176 last_display_update
= timestamp
;
178 if (timestamp
- last_display_update
>= refresh_display
) {
179 sem_wait(&goodtoupdate
);
180 g_ptr_array_add(copies
, get_copy_lttngtop(last_display_update
,
182 sem_post(&goodtodisplay
);
183 sem_post(&bootstrap
);
184 last_display_update
= timestamp
;
189 fprintf(stderr
, "check_timestamp callback error\n");
190 return BT_CB_ERROR_STOP
;
194 * get_perf_counter : get or create and return a perf_counter struct for
195 * either a process or a cpu (only one of the 2 parameters mandatory)
197 struct perfcounter
*get_perf_counter(const char *name
, struct processtop
*proc
,
200 struct perfcounter
*ret
;
210 ret
= g_hash_table_lookup(table
, (gpointer
) name
);
214 ret
= g_new0(struct perfcounter
, 1);
215 /* by default, make it visible in the UI */
217 g_hash_table_insert(table
, (gpointer
) strdup(name
), ret
);
226 void update_perf_value(struct processtop
*proc
, struct cputime
*cpu
,
227 const char *name
, int value
)
229 struct perfcounter
*cpu_perf
, *process_perf
;
231 cpu_perf
= get_perf_counter(name
, NULL
, cpu
);
232 if (cpu_perf
->count
< value
) {
233 process_perf
= get_perf_counter(name
, proc
, NULL
);
234 process_perf
->count
+= value
- cpu_perf
->count
;
235 cpu_perf
->count
= value
;
239 void extract_perf_counter_scope(const struct bt_ctf_event
*event
,
240 const struct bt_definition
*scope
,
241 struct processtop
*proc
,
244 struct bt_definition
const * const *list
= NULL
;
245 const struct bt_definition
*field
;
247 struct perfcounter
*perfcounter
;
255 ret
= bt_ctf_get_field_list(event
, scope
, &list
, &count
);
262 g_hash_table_iter_init(&iter
, global_perf_liszt
);
263 while (g_hash_table_iter_next (&iter
, &key
, (gpointer
) &perfcounter
)) {
264 field
= bt_ctf_get_field(event
, scope
, (char *) key
);
266 int value
= bt_ctf_get_uint64(field
);
267 if (bt_ctf_field_get_error())
269 update_perf_value(proc
, cpu
, (char *) key
, value
);
277 void update_perf_counter(struct processtop
*proc
, const struct bt_ctf_event
*event
)
280 const struct bt_definition
*scope
;
282 cpu
= get_cpu(get_cpu_id(event
));
284 scope
= bt_ctf_get_top_level_scope(event
, BT_STREAM_EVENT_CONTEXT
);
285 extract_perf_counter_scope(event
, scope
, proc
, cpu
);
287 scope
= bt_ctf_get_top_level_scope(event
, BT_STREAM_PACKET_CONTEXT
);
288 extract_perf_counter_scope(event
, scope
, proc
, cpu
);
290 scope
= bt_ctf_get_top_level_scope(event
, BT_EVENT_CONTEXT
);
291 extract_perf_counter_scope(event
, scope
, proc
, cpu
);
294 enum bt_cb_ret
fix_process_table(struct bt_ctf_event
*call_data
,
299 struct processtop
*parent
, *child
;
300 unsigned long timestamp
;
302 timestamp
= bt_ctf_get_timestamp(call_data
);
303 if (timestamp
== -1ULL)
306 pid
= get_context_pid(call_data
);
310 tid
= get_context_tid(call_data
);
314 ppid
= get_context_ppid(call_data
);
318 comm
= get_context_comm(call_data
);
323 /* find or create the current process */
324 child
= find_process_tid(<tngtop
, tid
, comm
);
326 child
= add_proc(<tngtop
, tid
, comm
, timestamp
);
327 update_proc(child
, pid
, tid
, ppid
, comm
);
330 /* find or create the parent */
331 parent
= find_process_tid(<tngtop
, pid
, comm
);
333 parent
= add_proc(<tngtop
, pid
, comm
, timestamp
);
337 /* attach the parent to the current process */
338 child
->threadparent
= parent
;
339 add_thread(parent
, child
);
342 update_perf_counter(child
, call_data
);
347 return BT_CB_ERROR_STOP
;
352 copies
= g_ptr_array_new();
353 global_perf_liszt
= g_hash_table_new(g_str_hash
, g_str_equal
);
355 sem_init(&goodtodisplay
, 0, 0);
356 sem_init(&goodtoupdate
, 0, 1);
357 sem_init(&timer
, 0, 1);
358 sem_init(&bootstrap
, 0, 0);
359 sem_init(&pause_sem
, 0, 1);
360 sem_init(&end_trace_sem
, 0, 0);
362 reset_global_counters();
364 lttngtop
.nbthreads
= 0;
365 lttngtop
.nbfiles
= 0;
367 lttngtop
.process_hash_table
= g_hash_table_new(g_direct_hash
,
369 lttngtop
.process_table
= g_ptr_array_new();
370 lttngtop
.files_table
= g_ptr_array_new();
371 lttngtop
.cpu_table
= g_ptr_array_new();
376 fprintf(fp
, "LTTngTop %s\n\n", VERSION
);
377 fprintf(fp
, "Usage : lttngtop /path/to/trace\n");
381 * Return 0 if caller should continue, < 0 if caller should return
382 * error, > 0 if caller should exit without reporting error.
384 static int parse_options(int argc
, char **argv
)
389 pc
= poptGetContext(NULL
, argc
, (const char **) argv
, long_options
, 0);
390 poptReadDefaultConfig(pc
, 0);
392 while ((opt
= poptGetNextOpt(pc
)) != -1) {
396 ret
= 1; /* exit cleanly */
407 opt_input_path
= poptGetArg(pc
);
416 void iter_trace(struct bt_context
*bt_ctx
)
418 struct bt_ctf_iter
*iter
;
419 struct bt_iter_pos begin_pos
;
420 const struct bt_ctf_event
*event
;
423 begin_pos
.type
= BT_SEEK_BEGIN
;
424 iter
= bt_ctf_iter_create(bt_ctx
, &begin_pos
, NULL
);
427 bt_ctf_iter_add_callback(iter
, 0, NULL
, 0,
431 /* at each event check if we need to refresh */
432 bt_ctf_iter_add_callback(iter
, 0, NULL
, 0,
435 /* at each event, verify the status of the process table */
436 bt_ctf_iter_add_callback(iter
, 0, NULL
, 0,
439 /* to handle the scheduling events */
440 bt_ctf_iter_add_callback(iter
,
441 g_quark_from_static_string("sched_switch"),
442 NULL
, 0, handle_sched_switch
, NULL
, NULL
, NULL
);
443 /* to clean up the process table */
444 bt_ctf_iter_add_callback(iter
,
445 g_quark_from_static_string("sched_process_free"),
446 NULL
, 0, handle_sched_process_free
, NULL
, NULL
, NULL
);
447 /* to get all the process from the statedumps */
448 bt_ctf_iter_add_callback(iter
,
449 g_quark_from_static_string(
450 "lttng_statedump_process_state"),
451 NULL
, 0, handle_statedump_process_state
,
455 bt_ctf_iter_add_callback(iter
,
456 g_quark_from_static_string("exit_syscall"),
457 NULL
, 0, handle_exit_syscall
, NULL
, NULL
, NULL
);
458 bt_ctf_iter_add_callback(iter
,
459 g_quark_from_static_string("sys_write"),
460 NULL
, 0, handle_sys_write
, NULL
, NULL
, NULL
);
461 bt_ctf_iter_add_callback(iter
,
462 g_quark_from_static_string("sys_read"),
463 NULL
, 0, handle_sys_read
, NULL
, NULL
, NULL
);
464 bt_ctf_iter_add_callback(iter
,
465 g_quark_from_static_string("sys_open"),
466 NULL
, 0, handle_sys_open
, NULL
, NULL
, NULL
);
467 bt_ctf_iter_add_callback(iter
,
468 g_quark_from_static_string("sys_close"),
469 NULL
, 0, handle_sys_close
, NULL
, NULL
, NULL
);
470 bt_ctf_iter_add_callback(iter
,
471 g_quark_from_static_string(
472 "lttng_statedump_file_descriptor"),
473 NULL
, 0, handle_statedump_file_descriptor
,
477 while (((event
= bt_ctf_iter_read_event(iter
)) != NULL
)) {
480 ret
= bt_iter_next(bt_ctf_get_iter(iter
));
485 /* block until quit, we reached the end of the trace */
486 sem_wait(&end_trace_sem
);
489 bt_ctf_iter_destroy(iter
);
493 * bt_context_add_traces_recursive: Open a trace recursively
494 * (copied from BSD code in converter/babeltrace.c)
496 * Find each trace present in the subdirectory starting from the given
497 * path, and add them to the context. The packet_seek parameter can be
498 * NULL: this specify to use the default format packet_seek.
500 * Return: 0 on success, nonzero on failure.
501 * Unable to open toplevel: failure.
502 * Unable to open some subdirectory or file: warn and continue;
504 int bt_context_add_traces_recursive(struct bt_context
*ctx
, const char *path
,
505 const char *format_str
,
506 void (*packet_seek
)(struct bt_stream_pos
*pos
,
507 size_t offset
, int whence
))
512 char lpath
[PATH_MAX
];
513 char * const paths
[2] = { lpath
, NULL
};
517 * Need to copy path, because fts_open can change it.
518 * It is the pointer array, not the strings, that are constant.
520 strncpy(lpath
, path
, PATH_MAX
);
521 lpath
[PATH_MAX
- 1] = '\0';
523 tree
= fts_open(paths
, FTS_NOCHDIR
| FTS_LOGICAL
, 0);
525 fprintf(stderr
, "[error] [Context] Cannot traverse \"%s\" for reading.\n",
530 trace_ids
= g_array_new(FALSE
, TRUE
, sizeof(int));
532 while ((node
= fts_read(tree
))) {
535 if (!(node
->fts_info
& FTS_D
))
538 dirfd
= open(node
->fts_accpath
, 0);
540 fprintf(stderr
, "[error] [Context] Unable to open trace "
541 "directory file descriptor.\n");
545 metafd
= openat(dirfd
, "metadata", O_RDONLY
);
564 trace_id
= bt_context_add_trace(ctx
,
565 node
->fts_accpath
, format_str
,
566 packet_seek
, NULL
, NULL
);
568 fprintf(stderr
, "[warning] [Context] opening trace \"%s\" from %s "
569 "for reading.\n", node
->fts_accpath
, path
);
570 /* Allow to skip erroneous traces. */
573 g_array_append_val(trace_ids
, trace_id
);
577 g_array_free(trace_ids
, TRUE
);
584 static int check_field_requirements(const struct bt_ctf_field_decl
*const * field_list
,
585 int field_cnt
, int *tid_check
, int *pid_check
,
586 int *procname_check
, int *ppid_check
)
589 struct perfcounter
*global
;
592 for (j
= 0; j
< field_cnt
; j
++) {
593 name
= bt_ctf_get_decl_field_name(field_list
[j
]);
594 if (*tid_check
== 0) {
595 if (strncmp(name
, "tid", 3) == 0)
598 if (*pid_check
== 0) {
599 if (strncmp(name
, "pid", 3) == 0)
602 if (*ppid_check
== 0) {
603 if (strncmp(name
, "ppid", 4) == 0)
606 if (*procname_check
== 0) {
607 if (strncmp(name
, "procname", 8) == 0)
610 if (strncmp(name
, "perf_", 5) == 0) {
611 global
= g_hash_table_lookup(global_perf_liszt
, (gpointer
) name
);
613 global
= g_new0(struct perfcounter
, 1);
614 /* by default, sort on the first perf context */
615 if (g_hash_table_size(global_perf_liszt
) == 0)
618 g_hash_table_insert(global_perf_liszt
, (gpointer
) strdup(name
), global
);
623 if (*tid_check
== 1 && *pid_check
== 1 && *ppid_check
== 1 &&
624 *procname_check
== 1)
631 * check_requirements: check if the required context informations are available
633 * If each mandatory context information is available for at least in one
634 * event, return 0 otherwise return -1.
636 int check_requirements(struct bt_context
*ctx
)
638 unsigned int i
, evt_cnt
, field_cnt
;
639 struct bt_ctf_event_decl
*const * evt_list
;
640 const struct bt_ctf_field_decl
*const * field_list
;
643 int procname_check
= 0;
647 bt_ctf_get_event_decl_list(0, ctx
, &evt_list
, &evt_cnt
);
648 for (i
= 0; i
< evt_cnt
; i
++) {
649 bt_ctf_get_decl_fields(evt_list
[i
], BT_STREAM_EVENT_CONTEXT
,
650 &field_list
, &field_cnt
);
651 ret
= check_field_requirements(field_list
, field_cnt
,
652 &tid_check
, &pid_check
, &procname_check
,
655 bt_ctf_get_decl_fields(evt_list
[i
], BT_EVENT_CONTEXT
,
656 &field_list
, &field_cnt
);
657 ret
= check_field_requirements(field_list
, field_cnt
,
658 &tid_check
, &pid_check
, &procname_check
,
661 bt_ctf_get_decl_fields(evt_list
[i
], BT_STREAM_PACKET_CONTEXT
,
662 &field_list
, &field_cnt
);
663 ret
= check_field_requirements(field_list
, field_cnt
,
664 &tid_check
, &pid_check
, &procname_check
,
668 if (tid_check
== 0) {
670 fprintf(stderr
, "[error] missing tid context information\n");
672 if (pid_check
== 0) {
674 fprintf(stderr
, "[error] missing pid context information\n");
676 if (ppid_check
== 0) {
678 fprintf(stderr
, "[error] missing ppid context information\n");
680 if (procname_check
== 0) {
682 fprintf(stderr
, "[error] missing procname context information\n");
688 ssize_t
read_subbuffer(struct lttng_consumer_stream
*kconsumerd_fd
,
689 struct lttng_consumer_local_data
*ctx
)
694 int infd
= helper_get_lttng_consumer_stream_wait_fd(kconsumerd_fd
);
696 if (helper_get_lttng_consumer_stream_output(kconsumerd_fd
) == LTTNG_EVENT_SPLICE
) {
697 /* Get the next subbuffer */
698 err
= helper_kernctl_get_next_subbuf(infd
);
701 perror("Reserving sub buffer failed (everything is normal, "
702 "it is due to concurrency)");
705 /* read the whole subbuffer */
706 err
= helper_kernctl_get_padded_subbuf_size(infd
, &len
);
709 perror("Getting sub-buffer len failed.");
713 /* splice the subbuffer to the tracefile */
714 ret
= helper_lttng_consumer_on_read_subbuffer_splice(ctx
, kconsumerd_fd
, len
);
717 * display the error but continue processing to try
718 * to release the subbuffer
720 fprintf(stderr
,"Error splicing to tracefile\n");
722 err
= helper_kernctl_put_next_subbuf(infd
);
725 perror("Reserving sub buffer failed (everything is normal, "
726 "it is due to concurrency)");
729 sem_post(&metadata_available
);
736 int on_update_fd(int key
, uint32_t state
)
738 /* let the lib handle the metadata FD */
739 if (key
== sessiond_metadata
)
744 int on_recv_fd(struct lttng_consumer_stream
*kconsumerd_fd
)
747 struct mmap_stream
*new_mmap_stream
;
749 /* Opening the tracefile in write mode */
750 if (helper_get_lttng_consumer_stream_path_name(kconsumerd_fd
) != NULL
) {
751 ret
= open(helper_get_lttng_consumer_stream_path_name(kconsumerd_fd
),
752 O_WRONLY
|O_CREAT
|O_TRUNC
, S_IRWXU
|S_IRWXG
|S_IRWXO
);
757 helper_set_lttng_consumer_stream_out_fd(kconsumerd_fd
, ret
);
760 if (helper_get_lttng_consumer_stream_output(kconsumerd_fd
) == LTTNG_EVENT_MMAP
) {
761 new_mmap_stream
= malloc(sizeof(struct mmap_stream
));
762 new_mmap_stream
->fd
= helper_get_lttng_consumer_stream_wait_fd(
764 bt_list_add(&new_mmap_stream
->list
, &mmap_list
.head
);
766 g_ptr_array_add(lttng_consumer_stream_array
, kconsumerd_fd
);
767 /* keep mmap FDs internally */
770 consumerd_metadata
= helper_get_lttng_consumer_stream_wait_fd(kconsumerd_fd
);
771 sessiond_metadata
= helper_get_lttng_consumer_stream_key(kconsumerd_fd
);
779 void live_consume(struct bt_context
**bt_ctx
)
783 if (!metadata_ready
) {
784 sem_wait(&metadata_available
);
785 if (access("/tmp/livesession/kernel/metadata", F_OK
) != 0) {
786 fprintf(stderr
,"no metadata\n");
790 metadata_fp
= fopen("/tmp/livesession/kernel/metadata", "r");
794 *bt_ctx
= bt_context_create();
795 ret
= bt_context_add_trace(*bt_ctx
, NULL
, "ctf",
796 lttngtop_ctf_packet_seek
, &mmap_list
, metadata_fp
);
798 printf("Error adding trace\n");
808 int setup_consumer(char *command_sock_path
, pthread_t
*threads
,
809 struct lttng_consumer_local_data
*ctx
)
813 ctx
= helper_lttng_consumer_create(HELPER_LTTNG_CONSUMER_KERNEL
,
814 read_subbuffer
, NULL
, on_recv_fd
, on_update_fd
);
818 unlink(command_sock_path
);
819 helper_lttng_consumer_set_command_sock_path(ctx
, command_sock_path
);
820 helper_lttng_consumer_init();
822 /* Create the thread to manage the receive of fd */
823 ret
= pthread_create(&threads
[0], NULL
, helper_lttng_consumer_thread_receive_fds
,
826 perror("pthread_create receive fd");
829 /* Create thread to manage the polling/writing of traces */
830 ret
= pthread_create(&threads
[1], NULL
, helper_lttng_consumer_thread_poll_fds
,
833 perror("pthread_create poll fd");
841 void *setup_live_tracing()
843 struct lttng_domain dom
;
844 struct lttng_channel chan
;
845 char *channel_name
= "mmapchan";
846 struct lttng_event ev
;
848 char *command_sock_path
= "/tmp/consumerd_sock";
849 static pthread_t threads
[2]; /* recv_fd, poll */
850 struct lttng_event_context kctxpid
, kctxcomm
, kctxppid
, kctxtid
;
852 struct lttng_handle
*handle
;
854 BT_INIT_LIST_HEAD(&mmap_list
.head
);
856 lttng_consumer_stream_array
= g_ptr_array_new();
858 if ((ret
= setup_consumer(command_sock_path
, threads
, ctx
)) < 0) {
859 fprintf(stderr
,"error setting up consumer\n");
863 available_snapshots
= g_ptr_array_new();
865 /* setup the session */
866 dom
.type
= LTTNG_DOMAIN_KERNEL
;
868 ret
= unlink("/tmp/livesession");
870 lttng_destroy_session("test");
871 if ((ret
= lttng_create_session("test", "/tmp/livesession")) < 0) {
872 fprintf(stderr
,"error creating the session : %s\n",
873 helper_lttcomm_get_readable_code(ret
));
877 if ((handle
= lttng_create_handle("test", &dom
)) == NULL
) {
878 fprintf(stderr
,"error creating handle\n");
882 if ((ret
= lttng_register_consumer(handle
, command_sock_path
)) < 0) {
883 fprintf(stderr
,"error registering consumer : %s\n",
884 helper_lttcomm_get_readable_code(ret
));
888 strcpy(chan
.name
, channel_name
);
889 chan
.attr
.overwrite
= 0;
890 // chan.attr.subbuf_size = 32768;
891 chan
.attr
.subbuf_size
= 1048576; /* 1MB */
892 chan
.attr
.num_subbuf
= 4;
893 chan
.attr
.switch_timer_interval
= 0;
894 chan
.attr
.read_timer_interval
= 200;
895 chan
.attr
.output
= LTTNG_EVENT_MMAP
;
897 if ((ret
= lttng_enable_channel(handle
, &chan
)) < 0) {
898 fprintf(stderr
,"error creating channel : %s\n",
899 helper_lttcomm_get_readable_code(ret
));
903 memset(&ev
, '\0', sizeof(struct lttng_event
));
904 //sprintf(ev.name, "sched_switch");
905 ev
.type
= LTTNG_EVENT_TRACEPOINT
;
906 if ((ret
= lttng_enable_event(handle
, &ev
, channel_name
)) < 0) {
907 fprintf(stderr
,"error enabling event : %s\n",
908 helper_lttcomm_get_readable_code(ret
));
912 ev
.type
= LTTNG_EVENT_SYSCALL
;
913 if ((ret
= lttng_enable_event(handle
, &ev
, channel_name
)) < 0) {
914 fprintf(stderr
,"error enabling syscalls : %s\n",
915 helper_lttcomm_get_readable_code(ret
));
919 kctxpid
.ctx
= LTTNG_EVENT_CONTEXT_PID
;
920 lttng_add_context(handle
, &kctxpid
, NULL
, NULL
);
921 kctxppid
.ctx
= LTTNG_EVENT_CONTEXT_PPID
;
922 lttng_add_context(handle
, &kctxppid
, NULL
, NULL
);
923 kctxcomm
.ctx
= LTTNG_EVENT_CONTEXT_PROCNAME
;
924 lttng_add_context(handle
, &kctxcomm
, NULL
, NULL
);
925 kctxtid
.ctx
= LTTNG_EVENT_CONTEXT_TID
;
926 lttng_add_context(handle
, &kctxtid
, NULL
, NULL
);
928 if ((ret
= lttng_start_tracing("test")) < 0) {
929 fprintf(stderr
,"error starting tracing : %s\n",
930 helper_lttcomm_get_readable_code(ret
));
934 helper_kernctl_buffer_flush(consumerd_metadata
);
936 /* block until metadata is ready */
937 sem_init(&metadata_available
, 0, 0);
943 int main(int argc
, char **argv
)
946 struct bt_context
*bt_ctx
= NULL
;
948 ret
= parse_options(argc
, argv
);
950 fprintf(stdout
, "Error parsing options.\n\n");
953 } else if (ret
> 0) {
957 if (!opt_input_path
) {
958 setup_live_tracing();
961 pthread_create(&display_thread
, NULL
, ncurses_display
, (void *) NULL
);
962 pthread_create(&timer_thread
, NULL
, refresh_thread
, (void *) NULL
);
964 live_consume(&bt_ctx
);
967 pthread_join(timer_thread
, NULL
);
969 pthread_join(display_thread
, NULL
);
971 lttng_stop_tracing("test");
972 lttng_destroy_session("test");
978 bt_ctx
= bt_context_create();
979 ret
= bt_context_add_traces_recursive(bt_ctx
, opt_input_path
, "ctf", NULL
);
981 fprintf(stderr
, "[error] Opening the trace\n");
985 ret
= check_requirements(bt_ctx
);
987 fprintf(stderr
, "[error] some mandatory contexts were missing, exiting.\n");
990 pthread_create(&display_thread
, NULL
, ncurses_display
, (void *) NULL
);
991 pthread_create(&timer_thread
, NULL
, refresh_thread
, (void *) NULL
);
995 pthread_join(display_thread
, NULL
);
997 pthread_join(timer_thread
, NULL
);
1002 bt_context_put(bt_ctx
);