#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,
return ret;
}
+void dump_snapshot()
+{
+#if 0
+ struct lttng_consumer_stream *iter;
+ unsigned long spos;
+ struct mmap_stream *new_snapshot;
+
+ int ret = 0;
+ int i;
+ /*
+ * try lock mutex ressource courante (overrun)
+ * if fail : overrun
+ * stop trace (flush implicite avant stop)
+ * lttng_consumer_take_snapshot
+ * read timestamp packet end (use time as end pos)
+ * - stream_packet_context
+ * - reculer de 1 subbuf : pos - max_subbuff_size
+ *
+ * - position de fin (take_snapshot)
+ * - mov_pos_slow ( fin - max_subbuff_size) lire timestamp packet end
+ * - prend min(end) (activité sur tous les streams)
+ *
+ * start trace
+ * unlock mutex
+ */
+
+ helper_kernctl_buffer_flush(consumerd_metadata);
+ for (i = 0; i < lttng_consumer_stream_array->len; i++) {
+ iter = g_ptr_array_index(lttng_consumer_stream_array, i);
+ helper_kernctl_buffer_flush(helper_get_lttng_consumer_stream_wait_fd(iter));
+ printf("Taking snapshot of fd : %d\n", helper_get_lttng_consumer_stream_wait_fd(iter));
+ ret = helper_lttng_consumer_take_snapshot(ctx, iter);
+ if (ret != 0) {
+ ret = errno;
+ perror("lttng_consumer_take_snapshots");
+ goto end;
+ }
+ }
+ for (i = 0; i < lttng_consumer_stream_array->len; i++) {
+ iter = g_ptr_array_index(lttng_consumer_stream_array, i);
+ ret = helper_lttng_consumer_get_produced_snapshot(ctx, iter, &spos);
+ if (ret != 0) {
+ ret = errno;
+ perror("helper_lttng_consumer_get_produced_snapshot");
+ goto end;
+ }
+ while (helper_get_lttng_consumer_stream_wait_last_pos(iter) < spos) {
+ new_snapshot = g_new0(struct mmap_stream, 1);
+ new_snapshot->fd = helper_get_lttng_consumer_stream_wait_fd(iter);
+ new_snapshot->last_pos = helper_get_lttng_consumer_stream_wait_last_pos(iter);
+ fprintf(stderr,"ADDING AVAILABLE SNAPSHOT ON FD %d AT POSITION %lu\n",
+ new_snapshot->fd,
+ new_snapshot->last_pos);
+ g_ptr_array_add(available_snapshots, new_snapshot);
+ helper_set_lttng_consumer_stream_wait_last_pos(iter,
+ helper_get_lttng_consumer_stream_wait_last_pos(iter) +
+ helper_get_lttng_consumer_stream_chan_max_sb_size(iter));
+ }
+ }
+
+ if (!metadata_ready) {
+ fprintf(stderr, "BLOCKING BEFORE METADATA\n");
+ sem_wait(&metadata_available);
+ fprintf(stderr,"OPENING TRACE\n");
+ if (access("/tmp/livesession/kernel/metadata", F_OK) != 0) {
+ fprintf(stderr,"NO METADATA FILE, SKIPPING\n");
+ return;
+ }
+ metadata_ready = 1;
+ metadata_fp = fopen("/tmp/livesession/kernel/metadata", "r");
+ }
+
+
+end:
+ return;
+#endif
+}
+
ssize_t read_subbuffer(struct lttng_consumer_stream *kconsumerd_fd,
struct lttng_consumer_local_data *ctx)
{
"it is due to concurrency)");
goto end;
}
-// sem_post(&metadata_available);
+ sem_post(&metadata_available);
}
end:
struct mmap_stream *new_info;
size_t tmp_mmap_len;
- 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),
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),
}
g_ptr_array_add(lttng_consumer_stream_array, kconsumerd_fd);
- ret = 1;
+ ret = 0;
} else {
consumerd_metadata = helper_get_lttng_consumer_stream_wait_fd(kconsumerd_fd);
sessiond_metadata = helper_get_lttng_consumer_stream_key(kconsumerd_fd);
return ret;
}
+void *live_consume()
+{
+ struct bt_context *bt_ctx = NULL;
+ int ret;
+
+ while (1) {
+// dump_snapshot();
+
+ if (!metadata_ready) {
+ fprintf(stderr, "BLOCKING BEFORE METADATA\n");
+ sem_wait(&metadata_available);
+ fprintf(stderr,"OPENING TRACE\n");
+ if (access("/tmp/livesession/kernel/metadata", F_OK) != 0) {
+ fprintf(stderr,"NO METADATA FILE, SKIPPING\n");
+ return;
+ }
+ 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);
+ trace_opened = 1;
+ }
+ iter_trace(bt_ctx);
+ sleep(1);
+ }
+}
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;
}
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;
+ }
+
+// pthread_cancel(live_trace_thread);
/* block until metadata is ready */
- //sem_init(&metadata_available, 0, 0);
+ sem_init(&metadata_available, 0, 0);
//init_lttngtop();
if (!opt_input_path) {
printf("live tracing enabled\n");
- setup_live_tracing();
+ pthread_create(&live_trace_thread, NULL, setup_live_tracing, (void *) NULL);
+ sleep(20);
+ 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