#include <sys/mman.h>
#include <lttng/lttng.h>
#include <lttng/lttngtop-helper.h>
+#include <babeltrace/lttngtopmmappacketseek.h>
#include "lttngtoptypes.h"
#include "cputop.h"
struct lttngtop *copy;
pthread_t display_thread;
pthread_t timer_thread;
+pthread_t live_trace_thread;
unsigned long refresh_display = 1 * NSEC_PER_SEC;
unsigned long last_display_update = 0;
int quit = 0;
/* LIVE */
+pthread_t thread_live_consume;
/* list of FDs available for being read with snapshots */
struct mmap_stream_list mmap_list;
GPtrArray *lttng_consumer_stream_array;
int sessiond_metadata, consumerd_metadata;
+struct lttng_consumer_local_data *ctx = NULL;
+/* list of snapshots currently not consumed */
+GPtrArray *available_snapshots;
+sem_t metadata_available;
+FILE *metadata_fp;
+int trace_opened = 0;
+int metadata_ready = 0;
enum {
OPT_NONE = 0,
}
}
+/*
+ * hook on each event to check the timestamp and refresh the display if
+ * necessary
+ */
+enum bt_cb_ret print_timestamp(struct bt_ctf_event *call_data, void *private_data)
+{
+ unsigned long timestamp;
+ struct tm start;
+ uint64_t ts_nsec_start;
+
+
+ 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,
+ start.tm_min, start.tm_sec, ts_nsec_start,
+ bt_ctf_event_name(call_data));
+
+ return BT_CB_OK;
+}
+
/*
* hook on each event to check the timestamp and refresh the display if
* necessary
begin_pos.type = BT_SEEK_BEGIN;
iter = bt_ctf_iter_create(bt_ctx, &begin_pos, NULL);
+ bt_ctf_iter_add_callback(iter, 0, NULL, 0,
+ print_timestamp,
+ NULL, NULL, NULL);
+
+#if 0
/* at each event check if we need to refresh */
bt_ctf_iter_add_callback(iter, 0, NULL, 0,
check_timestamp,
"lttng_statedump_file_descriptor"),
NULL, 0, handle_statedump_file_descriptor,
NULL, NULL, NULL);
-
+#endif
while ((event = bt_ctf_iter_read_event(iter)) != NULL) {
ret = bt_iter_next(bt_ctf_get_iter(iter));
if (ret < 0)
if (helper_get_lttng_consumer_stream_output(kconsumerd_fd) == LTTNG_EVENT_SPLICE) {
/* Get the next subbuffer */
- printf("get_next : %d\n", infd);
err = helper_kernctl_get_next_subbuf(infd);
if (err != 0) {
ret = errno;
perror("Getting sub-buffer len failed.");
goto end;
}
- printf("len : %ld\n", len);
/* splice the subbuffer to the tracefile */
ret = helper_lttng_consumer_on_read_subbuffer_splice(ctx, kconsumerd_fd, len);
*/
fprintf(stderr,"Error splicing to tracefile\n");
}
- printf("ret : %ld\n", ret);
- printf("put_next : %d\n", infd);
err = helper_kernctl_put_next_subbuf(infd);
if (err != 0) {
ret = errno;
"it is due to concurrency)");
goto end;
}
-// sem_post(&metadata_available);
+ sem_post(&metadata_available);
}
end:
int on_recv_fd(struct lttng_consumer_stream *kconsumerd_fd)
{
int ret;
- struct mmap_stream *new_info;
- size_t tmp_mmap_len;
+ struct mmap_stream *new_mmap_stream;
- printf("Receiving %d\n", helper_get_lttng_consumer_stream_wait_fd(kconsumerd_fd));
/* Opening the tracefile in write mode */
if (helper_get_lttng_consumer_stream_path_name(kconsumerd_fd) != NULL) {
ret = open(helper_get_lttng_consumer_stream_path_name(kconsumerd_fd),
}
if (helper_get_lttng_consumer_stream_output(kconsumerd_fd) == LTTNG_EVENT_MMAP) {
- new_info = malloc(sizeof(struct mmap_stream));
- new_info->fd = helper_get_lttng_consumer_stream_wait_fd(kconsumerd_fd);
- bt_list_add(&new_info->list, &mmap_list.head);
-
- /* get the len of the mmap region */
- ret = helper_kernctl_get_mmap_len(helper_get_lttng_consumer_stream_wait_fd(kconsumerd_fd),
- &tmp_mmap_len);
- if (ret != 0) {
- ret = errno;
- perror("helper_kernctl_get_mmap_len");
- goto end;
- }
- helper_set_lttng_consumer_stream_mmap_len(kconsumerd_fd, tmp_mmap_len);
- printf("mmap len : %ld\n", tmp_mmap_len);
-
- helper_set_lttng_consumer_stream_mmap_base(kconsumerd_fd,
- mmap(NULL, helper_get_lttng_consumer_stream_mmap_len(kconsumerd_fd),
- PROT_READ, MAP_PRIVATE, helper_get_lttng_consumer_stream_wait_fd(kconsumerd_fd), 0));
- if (helper_get_lttng_consumer_stream_mmap_base(kconsumerd_fd) == MAP_FAILED) {
- perror("Error mmaping");
- ret = -1;
- goto end;
- }
+ new_mmap_stream = malloc(sizeof(struct mmap_stream));
+ new_mmap_stream->fd = helper_get_lttng_consumer_stream_wait_fd(
+ kconsumerd_fd);
+ bt_list_add(&new_mmap_stream->list, &mmap_list.head);
g_ptr_array_add(lttng_consumer_stream_array, kconsumerd_fd);
+ /* keep mmap FDs internally */
ret = 1;
} else {
consumerd_metadata = helper_get_lttng_consumer_stream_wait_fd(kconsumerd_fd);
return ret;
}
+void *live_consume()
+{
+ struct bt_context *bt_ctx = NULL;
+ int ret;
+
+ if (!metadata_ready) {
+ sem_wait(&metadata_available);
+ if (access("/tmp/livesession/kernel/metadata", F_OK) != 0) {
+ fprintf(stderr,"no metadata\n");
+ return NULL;
+ }
+ metadata_ready = 1;
+ metadata_fp = fopen("/tmp/livesession/kernel/metadata", "r");
+ }
+
+ if (!trace_opened) {
+ bt_ctx = bt_context_create();
+ ret = bt_context_add_trace(bt_ctx, NULL, "ctf",
+ lttngtop_ctf_packet_seek, &mmap_list, metadata_fp);
+ if (ret < 0) {
+ printf("Error adding trace\n");
+ return NULL;
+ }
+ trace_opened = 1;
+ }
+ iter_trace(bt_ctx);
+
+ return NULL;
+}
int setup_consumer(char *command_sock_path, pthread_t *threads,
struct lttng_consumer_local_data *ctx)
ret = pthread_create(&threads[0], NULL, helper_lttng_consumer_thread_receive_fds,
(void *) ctx);
if (ret != 0) {
- perror("pthread_create");
+ perror("pthread_create receive fd");
goto end;
}
/* Create thread to manage the polling/writing of traces */
ret = pthread_create(&threads[1], NULL, helper_lttng_consumer_thread_poll_fds,
(void *) ctx);
if (ret != 0) {
- perror("pthread_create");
+ perror("pthread_create poll fd");
goto end;
}
return ret;
}
-int setup_live_tracing()
+void *setup_live_tracing()
{
struct lttng_domain dom;
struct lttng_channel chan;
char *channel_name = "mmapchan";
- struct lttng_consumer_local_data *ctx = NULL;
struct lttng_event ev;
int ret = 0;
char *command_sock_path = "/tmp/consumerd_sock";
static pthread_t threads[2]; /* recv_fd, poll */
struct lttng_event_context kctxpid, kctxcomm, kctxppid, kctxtid;
- /* list of snapshots currently not consumed */
- GPtrArray *available_snapshots;
struct lttng_handle *handle;
ret = system("rm -rf /tmp/livesession");
+ lttng_destroy_session("test");
if ((ret = lttng_create_session("test", "/tmp/livesession")) < 0) {
fprintf(stderr,"error creating the session : %s\n",
helper_lttcomm_get_readable_code(ret));
}
strcpy(chan.name, channel_name);
- chan.attr.overwrite = 1;
-// chan.attr.subbuf_size = 32768;
- chan.attr.subbuf_size = 1048576; /* 1MB */
+ chan.attr.overwrite = 0;
+ chan.attr.subbuf_size = 32768;
+// chan.attr.subbuf_size = 1048576; /* 1MB */
chan.attr.num_subbuf = 4;
chan.attr.switch_timer_interval = 0;
chan.attr.read_timer_interval = 200;
}
helper_kernctl_buffer_flush(consumerd_metadata);
- sleep(10);
- lttng_stop_tracing("test");
- lttng_destroy_session("test");
+ /* Create thread to manage the polling/writing of traces */
+ ret = pthread_create(&thread_live_consume, NULL, live_consume, NULL);
+ if (ret != 0) {
+ perror("pthread_create");
+ goto end;
+ }
/* block until metadata is ready */
- //sem_init(&metadata_available, 0, 0);
+ sem_init(&metadata_available, 0, 0);
//init_lttngtop();
end:
- return ret;
+ return NULL;
}
int main(int argc, char **argv)
}
if (!opt_input_path) {
- printf("live tracing enabled\n");
- setup_live_tracing();
+ pthread_create(&live_trace_thread, NULL, setup_live_tracing, (void *) NULL);
+ sleep(2000);
+ printf("STOPPING\n");
+ lttng_stop_tracing("test");
+ printf("DESTROYING\n");
+ lttng_destroy_session("test");
+
+ printf("CANCELLING\n");
+ pthread_cancel(live_trace_thread);
goto end;
} else {
init_lttngtop();
projects / lttngtop.git / blobdiff