#include <sys/types.h>
#include <fts.h>
#include <assert.h>
+#include <sys/mman.h>
+#include <lttng/lttng.h>
+#include <lttng/lttngtop-helper.h>
+#include <babeltrace/lttngtopmmappacketseek.h>
#include "lttngtoptypes.h"
#include "cputop.h"
#define DEFAULT_FILE_ARRAY_SIZE 1
const char *opt_input_path;
+static int opt_textdump;
+static int opt_child;
+
+int quit = 0;
struct lttngtop *copy;
pthread_t display_thread;
unsigned long refresh_display = 1 * NSEC_PER_SEC;
unsigned long last_display_update = 0;
-int quit = 0;
+
+/* 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;
+int reload_trace = 0;
+
+int last_textdump_print_newline = 1;
enum {
OPT_NONE = 0,
OPT_HELP,
- OPT_LIST,
- OPT_VERBOSE,
- OPT_DEBUG,
- OPT_NAMES,
+ OPT_TEXTDUMP,
+ OPT_PID,
+ OPT_CHILD,
+ OPT_HOSTNAME,
};
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_STRING, &opt_tid, OPT_PID, NULL, NULL },
+ { "hostname", 'n', POPT_ARG_STRING, &opt_hostname, OPT_HOSTNAME, NULL, NULL },
{ NULL, 0, 0, NULL, 0, NULL, NULL },
};
+static void handle_textdump_sigterm(int signal)
+{
+ quit = 1;
+ lttng_destroy_session("test");
+}
+
void *refresh_thread(void *p)
{
+ struct mmap_stream *mmap_info;
+
while (1) {
- if (quit)
- return NULL;
+ if (quit) {
+ sem_post(&pause_sem);
+ sem_post(&timer);
+ sem_post(&end_trace_sem);
+ sem_post(&goodtodisplay);
+ sem_post(&goodtoupdate);
+ pthread_exit(0);
+ }
+ if (!opt_input_path) {
+ bt_list_for_each_entry(mmap_info, &mmap_list.head, list)
+ helper_kernctl_buffer_flush(mmap_info->fd);
+ }
sem_wait(&pause_sem);
sem_post(&pause_sem);
sem_post(&timer);
sem_wait(&goodtodisplay);
sem_wait(&pause_sem);
+ if (quit) {
+ sem_post(&pause_sem);
+ sem_post(&timer);
+ reset_ncurses();
+ pthread_exit(0);
+ }
+
copy = g_ptr_array_index(copies, current_display_index);
assert(copy);
display(current_display_index++);
sem_post(&goodtoupdate);
sem_post(&pause_sem);
+ }
+}
- if (quit) {
- reset_ncurses();
- pthread_exit(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;
+ int pid;
+ int64_t syscall_ret;
+ const struct definition *scope;
+ const char *hostname;
+
+ timestamp = bt_ctf_get_timestamp(call_data);
+
+ start = format_timestamp(timestamp);
+ ts_nsec_start = timestamp % NSEC_PER_SEC;
+
+ pid = get_context_pid(call_data);
+ if (pid == -1ULL && opt_tid) {
+ goto error;
}
+
+ hostname = get_context_hostname(call_data);
+ if (!opt_tid && (opt_hostname && !lookup_hostname_list(hostname)))
+ goto end;
+ if (!opt_hostname && (opt_tid && !lookup_tid_list(pid)))
+ goto end;
+ if ((opt_tid && !lookup_tid_list(pid)) &&
+ (opt_hostname && !lookup_hostname_list(hostname)))
+ goto end;
+
+ if (strcmp(bt_ctf_event_name(call_data), "exit_syscall") == 0) {
+ scope = bt_ctf_get_top_level_scope(call_data,
+ BT_EVENT_FIELDS);
+ syscall_ret = bt_ctf_get_int64(bt_ctf_get_field(call_data,
+ scope, "_ret"));
+ printf("= %ld\n", syscall_ret);
+ last_textdump_print_newline = 1;
+ } else {
+ /* we might have lost the exit_syscall event, so need to
+ * print the newline in this case */
+ if (last_textdump_print_newline == 0)
+ printf("\n");
+ printf("%02d:%02d:%02d.%09" PRIu64 " %d : %s ", start.tm_hour,
+ start.tm_min, start.tm_sec, ts_nsec_start,
+ pid, bt_ctf_event_name(call_data));
+ last_textdump_print_newline = 0;
+ }
+
+end:
+ return BT_CB_OK;
+error:
+ return BT_CB_ERROR_STOP;
}
/*
}
void extract_perf_counter_scope(const struct bt_ctf_event *event,
- const struct definition *scope,
+ const struct bt_definition *scope,
struct processtop *proc,
struct cputime *cpu)
{
- struct definition const * const *list = NULL;
- const struct definition *field;
+ struct bt_definition const * const *list = NULL;
+ const struct bt_definition *field;
unsigned int count;
struct perfcounter *perfcounter;
GHashTableIter iter;
void update_perf_counter(struct processtop *proc, const struct bt_ctf_event *event)
{
struct cputime *cpu;
- const struct definition *scope;
+ const struct bt_definition *scope;
cpu = get_cpu(get_cpu_id(event));
enum bt_cb_ret fix_process_table(struct bt_ctf_event *call_data,
void *private_data)
{
- int pid, tid, ppid;
- char *comm;
+ int pid, tid, ppid, vpid, vtid, vppid;
+ char *comm, *hostname;
struct processtop *parent, *child;
unsigned long timestamp;
if (pid == -1ULL) {
goto error;
}
+
tid = get_context_tid(call_data);
if (tid == -1ULL) {
goto error;
if (ppid == -1ULL) {
goto error;
}
+ vpid = get_context_vpid(call_data);
+ if (pid == -1ULL) {
+ vpid = -1;
+ }
+ vtid = get_context_vtid(call_data);
+ if (tid == -1ULL) {
+ vtid = -1;
+ }
+ vppid = get_context_vppid(call_data);
+ if (ppid == -1ULL) {
+ vppid = -1;
+ }
comm = get_context_comm(call_data);
if (!comm) {
goto error;
}
+ /* optional */
+ hostname = get_context_hostname(call_data);
/* find or create the current process */
child = find_process_tid(<tngtop, tid, comm);
if (!child)
child = add_proc(<tngtop, tid, comm, timestamp);
- update_proc(child, pid, tid, ppid, comm);
+ if (!child)
+ goto end;
+ update_proc(child, pid, tid, ppid, vpid, vtid, vppid, comm, hostname);
if (pid != tid) {
/* find or create the parent */
parent = find_process_tid(<tngtop, pid, comm);
if (!parent) {
parent = add_proc(<tngtop, pid, comm, timestamp);
- parent->pid = pid;
+ if (parent)
+ parent->pid = pid;
}
/* attach the parent to the current process */
update_perf_counter(child, call_data);
+end:
return BT_CB_OK;
error:
lttngtop.nbthreads = 0;
lttngtop.nbfiles = 0;
+ lttngtop.process_hash_table = g_hash_table_new(g_direct_hash,
+ g_direct_equal);
lttngtop.process_table = g_ptr_array_new();
lttngtop.files_table = g_ptr_array_new();
lttngtop.cpu_table = g_ptr_array_new();
void usage(FILE *fp)
{
fprintf(fp, "LTTngTop %s\n\n", VERSION);
- fprintf(fp, "Usage : lttngtop /path/to/trace\n");
+ fprintf(fp, "Usage : lttngtop [OPTIONS] [TRACE]\n");
+ fprintf(fp, " TRACE Path to the trace to analyse (no trace path for live tracing)\n");
+ fprintf(fp, " -h, --help This help message\n");
+ fprintf(fp, " -t, --textdump Display live events in text-only\n");
+ fprintf(fp, " -p, --pid Comma-separated list of PIDs to display\n");
+ fprintf(fp, " -f, --child Follow threads associated with selected PIDs\n");
+ fprintf(fp, " -n, --hostname Comma-separated list of hostnames to display (require hostname context in trace)\n");
}
/*
{
poptContext pc;
int opt, ret = 0;
-
- if (argc == 1) {
- usage(stdout);
- return 1; /* exit cleanly */
- }
+ char *tmp_str;
+ int *tid;
pc = poptGetContext(NULL, argc, (const char **) argv, long_options, 0);
poptReadDefaultConfig(pc, 0);
usage(stdout);
ret = 1; /* exit cleanly */
goto end;
+ case OPT_TEXTDUMP:
+ opt_textdump = 1;
+ break;
+ case OPT_CHILD:
+ opt_textdump = 1;
+ opt_child = 1;
+ break;
+ case OPT_PID:
+ tid_list = g_hash_table_new(g_str_hash,
+ g_str_equal);
+ tmp_str = strtok(opt_tid, ",");
+ while (tmp_str) {
+ tid = malloc(sizeof(int));
+ *tid = atoi(tmp_str);
+ g_hash_table_insert(tid_list,
+ (gpointer) tid, tid);
+ tmp_str = strtok(NULL, ",");
+ }
+ break;
+ case OPT_HOSTNAME:
+ hostname_list = g_hash_table_new(g_str_hash,
+ g_str_equal);
+ tmp_str = strtok(opt_hostname, ",");
+ while (tmp_str) {
+ char *new_str = strdup(tmp_str);
+ g_hash_table_insert(hostname_list,
+ (gpointer) new_str,
+ (gpointer) new_str);
+ tmp_str = strtok(NULL, ",");
+ }
+ break;
default:
ret = -EINVAL;
goto end;
}
opt_input_path = poptGetArg(pc);
- if (!opt_input_path) {
- ret = -EINVAL;
- goto end;
- }
+
end:
if (pc) {
poptFreeContext(pc);
begin_pos.type = BT_SEEK_BEGIN;
iter = bt_ctf_iter_create(bt_ctx, &begin_pos, NULL);
- /* at each event check if we need to refresh */
- bt_ctf_iter_add_callback(iter, 0, NULL, 0,
- check_timestamp,
- NULL, NULL, NULL);
- /* at each event, verify the status of the process table */
- bt_ctf_iter_add_callback(iter, 0, NULL, 0,
- fix_process_table,
- NULL, NULL, NULL);
- /* to handle the scheduling events */
- bt_ctf_iter_add_callback(iter,
- g_quark_from_static_string("sched_switch"),
- NULL, 0, handle_sched_switch, NULL, NULL, NULL);
- /* to clean up the process table */
- bt_ctf_iter_add_callback(iter,
- g_quark_from_static_string("sched_process_free"),
- NULL, 0, handle_sched_process_free, NULL, NULL, NULL);
- /* to get all the process from the statedumps */
- bt_ctf_iter_add_callback(iter,
- g_quark_from_static_string(
- "lttng_statedump_process_state"),
- NULL, 0, handle_statedump_process_state,
- NULL, NULL, NULL);
-
- /* for IO top */
- bt_ctf_iter_add_callback(iter,
- g_quark_from_static_string("exit_syscall"),
- NULL, 0, handle_exit_syscall, NULL, NULL, NULL);
- bt_ctf_iter_add_callback(iter,
- g_quark_from_static_string("sys_write"),
- NULL, 0, handle_sys_write, NULL, NULL, NULL);
- bt_ctf_iter_add_callback(iter,
- g_quark_from_static_string("sys_read"),
- NULL, 0, handle_sys_read, NULL, NULL, NULL);
- bt_ctf_iter_add_callback(iter,
- g_quark_from_static_string("sys_open"),
- NULL, 0, handle_sys_open, NULL, NULL, NULL);
- bt_ctf_iter_add_callback(iter,
- g_quark_from_static_string("sys_close"),
- NULL, 0, handle_sys_close, NULL, NULL, NULL);
- bt_ctf_iter_add_callback(iter,
- g_quark_from_static_string(
+ if (opt_textdump) {
+ bt_ctf_iter_add_callback(iter, 0, NULL, 0,
+ print_timestamp,
+ NULL, NULL, NULL);
+ } else {
+ /* at each event check if we need to refresh */
+ bt_ctf_iter_add_callback(iter, 0, NULL, 0,
+ check_timestamp,
+ NULL, NULL, NULL);
+ /* at each event, verify the status of the process table */
+ bt_ctf_iter_add_callback(iter, 0, NULL, 0,
+ fix_process_table,
+ NULL, NULL, NULL);
+ /* to handle the scheduling events */
+ bt_ctf_iter_add_callback(iter,
+ g_quark_from_static_string("sched_switch"),
+ NULL, 0, handle_sched_switch, NULL, NULL, NULL);
+ /* to clean up the process table */
+ bt_ctf_iter_add_callback(iter,
+ g_quark_from_static_string("sched_process_free"),
+ NULL, 0, handle_sched_process_free, NULL, NULL, NULL);
+ /* to get all the process from the statedumps */
+ bt_ctf_iter_add_callback(iter,
+ g_quark_from_static_string(
+ "lttng_statedump_process_state"),
+ NULL, 0, handle_statedump_process_state,
+ NULL, NULL, NULL);
+
+ /* for IO top */
+ bt_ctf_iter_add_callback(iter,
+ g_quark_from_static_string("exit_syscall"),
+ NULL, 0, handle_exit_syscall, NULL, NULL, NULL);
+ bt_ctf_iter_add_callback(iter,
+ g_quark_from_static_string("sys_write"),
+ NULL, 0, handle_sys_write, NULL, NULL, NULL);
+ bt_ctf_iter_add_callback(iter,
+ g_quark_from_static_string("sys_read"),
+ NULL, 0, handle_sys_read, NULL, NULL, NULL);
+ bt_ctf_iter_add_callback(iter,
+ g_quark_from_static_string("sys_open"),
+ NULL, 0, handle_sys_open, NULL, NULL, NULL);
+ bt_ctf_iter_add_callback(iter,
+ g_quark_from_static_string("sys_close"),
+ NULL, 0, handle_sys_close, NULL, NULL, NULL);
+ bt_ctf_iter_add_callback(iter,
+ g_quark_from_static_string(
"lttng_statedump_file_descriptor"),
- NULL, 0, handle_statedump_file_descriptor,
- NULL, NULL, NULL);
+ NULL, 0, handle_statedump_file_descriptor,
+ NULL, NULL, NULL);
+ }
- while ((event = bt_ctf_iter_read_event(iter)) != NULL) {
+ while ((event = bt_ctf_iter_read_event(iter, NULL)) != NULL) {
+ if (quit || reload_trace)
+ goto end_iter;
ret = bt_iter_next(bt_ctf_get_iter(iter));
if (ret < 0)
goto end_iter;
*/
int bt_context_add_traces_recursive(struct bt_context *ctx, const char *path,
const char *format_str,
- void (*packet_seek)(struct stream_pos *pos,
+ void (*packet_seek)(struct bt_stream_pos *pos,
size_t offset, int whence))
{
FTS *tree;
(*tid_check)++;
}
if (*pid_check == 0) {
- if (strncmp(name, "tid", 3) == 0)
+ if (strncmp(name, "pid", 3) == 0)
(*pid_check)++;
}
if (*ppid_check == 0) {
return ret;
}
+ssize_t read_subbuffer(struct lttng_consumer_stream *kconsumerd_fd,
+ struct lttng_consumer_local_data *ctx)
+{
+ unsigned long len;
+ int err;
+ long ret = 0;
+ int infd = helper_get_lttng_consumer_stream_wait_fd(kconsumerd_fd);
+
+ if (helper_get_lttng_consumer_stream_output(kconsumerd_fd) == LTTNG_EVENT_SPLICE) {
+ /* Get the next subbuffer */
+ err = helper_kernctl_get_next_subbuf(infd);
+ if (err != 0) {
+ ret = errno;
+ perror("Reserving sub buffer failed (everything is normal, "
+ "it is due to concurrency)");
+ goto end;
+ }
+ /* read the whole subbuffer */
+ err = helper_kernctl_get_padded_subbuf_size(infd, &len);
+ if (err != 0) {
+ ret = errno;
+ perror("Getting sub-buffer len failed.");
+ goto end;
+ }
+
+ /* splice the subbuffer to the tracefile */
+ ret = helper_lttng_consumer_on_read_subbuffer_splice(ctx, kconsumerd_fd, len);
+ if (ret < 0) {
+ /*
+ * display the error but continue processing to try
+ * to release the subbuffer
+ */
+ fprintf(stderr,"Error splicing to tracefile\n");
+ }
+ err = helper_kernctl_put_next_subbuf(infd);
+ if (err != 0) {
+ ret = errno;
+ perror("Reserving sub buffer failed (everything is normal, "
+ "it is due to concurrency)");
+ goto end;
+ }
+ sem_post(&metadata_available);
+ }
+
+end:
+ return 0;
+}
+
+int on_update_fd(int key, uint32_t state)
+{
+ /* let the lib handle the metadata FD */
+ if (key == sessiond_metadata)
+ return 0;
+ return 1;
+}
+
+int on_recv_fd(struct lttng_consumer_stream *kconsumerd_fd)
+{
+ int ret;
+ struct mmap_stream *new_mmap_stream;
+
+ /* 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),
+ O_WRONLY|O_CREAT|O_TRUNC, S_IRWXU|S_IRWXG|S_IRWXO);
+ if (ret < 0) {
+ perror("open");
+ goto end;
+ }
+ helper_set_lttng_consumer_stream_out_fd(kconsumerd_fd, ret);
+ }
+
+ if (helper_get_lttng_consumer_stream_output(kconsumerd_fd) == LTTNG_EVENT_MMAP) {
+ 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);
+ sessiond_metadata = helper_get_lttng_consumer_stream_key(kconsumerd_fd);
+ ret = 0;
+ }
+
+ reload_trace = 1;
+
+end:
+ return ret;
+}
+
+void live_consume(struct bt_context **bt_ctx)
+{
+ int ret;
+ FILE *metadata_fp;
+
+ sem_wait(&metadata_available);
+ if (access("/tmp/livesession/kernel/metadata", F_OK) != 0) {
+ fprintf(stderr,"no metadata\n");
+ goto end;
+ }
+ metadata_fp = fopen("/tmp/livesession/kernel/metadata", "r");
+
+ *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");
+ goto end;
+ }
+
+end:
+ return;
+}
+
+int setup_consumer(char *command_sock_path, pthread_t *threads,
+ struct lttng_consumer_local_data *ctx)
+{
+ int ret = 0;
+
+ ctx = helper_lttng_consumer_create(HELPER_LTTNG_CONSUMER_KERNEL,
+ read_subbuffer, NULL, on_recv_fd, on_update_fd);
+ if (!ctx)
+ goto end;
+
+ unlink(command_sock_path);
+ helper_lttng_consumer_set_command_sock_path(ctx, command_sock_path);
+ helper_lttng_consumer_init();
+
+ /* Create the thread to manage the receive of fd */
+ ret = pthread_create(&threads[0], NULL, helper_lttng_consumer_thread_receive_fds,
+ (void *) ctx);
+ if (ret != 0) {
+ 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 poll fd");
+ goto end;
+ }
+
+end:
+ return ret;
+}
+
+int setup_live_tracing()
+{
+ struct lttng_domain dom;
+ struct lttng_channel chan;
+ char *channel_name = "mmapchan";
+ 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;
+
+ struct lttng_handle *handle;
+
+ BT_INIT_LIST_HEAD(&mmap_list.head);
+
+ lttng_consumer_stream_array = g_ptr_array_new();
+
+ if ((ret = setup_consumer(command_sock_path, threads, ctx)) < 0) {
+ fprintf(stderr,"error setting up consumer\n");
+ goto error;
+ }
+
+ available_snapshots = g_ptr_array_new();
+
+ /* setup the session */
+ dom.type = LTTNG_DOMAIN_KERNEL;
+
+ ret = unlink("/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));
+ goto error;
+ }
+
+ if ((handle = lttng_create_handle("test", &dom)) == NULL) {
+ fprintf(stderr,"error creating handle\n");
+ goto error_session;
+ }
+
+ /*
+ * FIXME : need to let the
+ * helper_lttng_consumer_thread_receive_fds create the
+ * socket.
+ * Cleaner solution ?
+ */
+ while (access(command_sock_path, F_OK)) {
+ sleep(0.1);
+ }
+
+ if ((ret = lttng_register_consumer(handle, command_sock_path)) < 0) {
+ fprintf(stderr,"error registering consumer : %s\n",
+ helper_lttcomm_get_readable_code(ret));
+ goto error_session;
+ }
+
+ strcpy(chan.name, channel_name);
+ chan.attr.overwrite = 0;
+ if (opt_tid && opt_textdump) {
+ chan.attr.subbuf_size = 32768;
+ chan.attr.num_subbuf = 8;
+ } else {
+ chan.attr.subbuf_size = 1048576; /* 1MB */
+ chan.attr.num_subbuf = 4;
+ }
+ chan.attr.switch_timer_interval = 0;
+ chan.attr.read_timer_interval = 200;
+ chan.attr.output = LTTNG_EVENT_MMAP;
+
+ if ((ret = lttng_enable_channel(handle, &chan)) < 0) {
+ fprintf(stderr,"error creating channel : %s\n",
+ helper_lttcomm_get_readable_code(ret));
+ goto error_session;
+ }
+
+ memset(&ev, '\0', sizeof(struct lttng_event));
+ //sprintf(ev.name, "sched_switch");
+ ev.type = LTTNG_EVENT_TRACEPOINT;
+ if ((ret = lttng_enable_event(handle, &ev, channel_name)) < 0) {
+ fprintf(stderr,"error enabling event : %s\n",
+ helper_lttcomm_get_readable_code(ret));
+ goto error_session;
+ }
+
+ ev.type = LTTNG_EVENT_SYSCALL;
+ if ((ret = lttng_enable_event(handle, &ev, channel_name)) < 0) {
+ fprintf(stderr,"error enabling syscalls : %s\n",
+ helper_lttcomm_get_readable_code(ret));
+ goto error_session;
+ }
+
+ kctxpid.ctx = LTTNG_EVENT_CONTEXT_PID;
+ lttng_add_context(handle, &kctxpid, NULL, NULL);
+ kctxtid.ctx = LTTNG_EVENT_CONTEXT_TID;
+ lttng_add_context(handle, &kctxtid, NULL, NULL);
+ kctxppid.ctx = LTTNG_EVENT_CONTEXT_PPID;
+ lttng_add_context(handle, &kctxppid, NULL, NULL);
+ kctxcomm.ctx = LTTNG_EVENT_CONTEXT_PROCNAME;
+ lttng_add_context(handle, &kctxcomm, NULL, NULL);
+ kctxpid.ctx = LTTNG_EVENT_CONTEXT_VPID;
+ lttng_add_context(handle, &kctxpid, NULL, NULL);
+ kctxtid.ctx = LTTNG_EVENT_CONTEXT_VTID;
+ lttng_add_context(handle, &kctxtid, NULL, NULL);
+ kctxtid.ctx = LTTNG_EVENT_CONTEXT_HOSTNAME;
+ lttng_add_context(handle, &kctxtid, NULL, NULL);
+
+ if ((ret = lttng_start_tracing("test")) < 0) {
+ fprintf(stderr,"error starting tracing : %s\n",
+ helper_lttcomm_get_readable_code(ret));
+ goto error_session;
+ }
+
+ helper_kernctl_buffer_flush(consumerd_metadata);
+
+ /* block until metadata is ready */
+ sem_init(&metadata_available, 0, 0);
+
+ return 0;
+
+error_session:
+ lttng_destroy_session("test");
+error:
+ return -1;
+}
+
int main(int argc, char **argv)
{
int ret;
struct bt_context *bt_ctx = NULL;
+ struct mmap_stream *mmap_info;
+ unsigned long mmap_len;
ret = parse_options(argc, argv);
if (ret < 0) {
exit(EXIT_SUCCESS);
}
- init_lttngtop();
+ if (!opt_input_path) {
+ if (opt_textdump) {
+ signal(SIGTERM, handle_textdump_sigterm);
+ signal(SIGINT, handle_textdump_sigterm);
+ }
+ ret = setup_live_tracing();
+ if (ret < 0) {
+ goto end;
+ }
+ init_lttngtop();
+ if (!opt_textdump) {
+ pthread_create(&display_thread, NULL, ncurses_display, (void *) NULL);
+ pthread_create(&timer_thread, NULL, refresh_thread, (void *) NULL);
+ }
+ while (!quit) {
+ reload_trace = 0;
+ live_consume(&bt_ctx);
+ iter_trace(bt_ctx);
+ ret = bt_context_remove_trace(bt_ctx, 0);
+ if (ret != 0)
+ fprintf(stderr, "error removing trace\n");
+ if (bt_ctx) {
+ bt_context_put(bt_ctx);
+ }
- bt_ctx = bt_context_create();
- ret = bt_context_add_traces_recursive(bt_ctx, opt_input_path, "ctf", NULL);
- if (ret < 0) {
- fprintf(stderr, "[error] Opening the trace\n");
- goto end;
- }
+ /*
+ * since we receive all FDs every time there is an
+ * update and the FD number is different every time,
+ * we don't know which one are valid.
+ * so we check if all FDs are usable with a simple
+ * ioctl call.
+ */
+ bt_list_for_each_entry(mmap_info, &mmap_list.head, list) {
+ ret = helper_kernctl_get_mmap_len(mmap_info->fd, &mmap_len);
+ if (ret != 0) {
+ bt_list_del(&mmap_info->list);
+ }
+ }
+ sem_post(&metadata_available);
+ }
+
+ pthread_join(timer_thread, NULL);
+ quit = 1;
+ pthread_join(display_thread, NULL);
+
+ lttng_stop_tracing("test");
+ lttng_destroy_session("test");
- ret = check_requirements(bt_ctx);
- if (ret < 0) {
- fprintf(stderr, "[error] some mandatory contexts were missing, exiting.\n");
goto end;
- }
+ } else {
+ init_lttngtop();
+
+ bt_ctx = bt_context_create();
+ ret = bt_context_add_traces_recursive(bt_ctx, opt_input_path, "ctf", NULL);
+ if (ret < 0) {
+ fprintf(stderr, "[error] Opening the trace\n");
+ goto end;
+ }
- pthread_create(&display_thread, NULL, ncurses_display, (void *) NULL);
- pthread_create(&timer_thread, NULL, refresh_thread, (void *) NULL);
+ ret = check_requirements(bt_ctx);
+ if (ret < 0) {
+ fprintf(stderr, "[error] some mandatory contexts were missing, exiting.\n");
+ goto end;
+ }
+ pthread_create(&display_thread, NULL, ncurses_display, (void *) NULL);
+ pthread_create(&timer_thread, NULL, refresh_thread, (void *) NULL);
- iter_trace(bt_ctx);
+ iter_trace(bt_ctx);
- quit = 1;
- pthread_join(display_thread, NULL);
- pthread_join(timer_thread, NULL);
+ pthread_join(display_thread, NULL);
+ quit = 1;
+ pthread_join(timer_thread, NULL);
+ }
end:
- bt_context_put(bt_ctx);
+ if (bt_ctx)
+ bt_context_put(bt_ctx);
+
return 0;
}
projects / lttngtop.git / blobdiff