/*
- * Copyright (C) 2011-2012 Julien Desfossez
+ * Copyright (C) 2013 Julien Desfossez
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License Version 2 as
#include <assert.h>
#include <sys/mman.h>
#include <lttng/lttng.h>
+#ifdef LTTNGTOP_MMAP_LIVE
#include <lttng/lttngtop-helper.h>
#include <babeltrace/lttngtopmmappacketseek.h>
+#include "mmap-live.h"
+#endif /* LTTNGTOP_MMAP_LIVE */
#include "lttngtoptypes.h"
#include "cputop.h"
#include "iostreamtop.h"
#include "cursesdisplay.h"
#include "common.h"
+#include "network-live.h"
+
+#include "lttng-index.h"
#define DEFAULT_FILE_ARRAY_SIZE 1
const char *opt_input_path;
+static int opt_textdump;
+static int opt_child;
+static int opt_begin;
+
+int quit = 0;
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;
+unsigned long last_event_ts = 0;
-/* LIVE */
-pthread_t thread_live_consume;
/* list of FDs available for being read with snapshots */
-struct mmap_stream_list mmap_list;
+struct bt_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;
+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,
+ OPT_RELAY_HOSTNAME,
+ OPT_KPROBES,
+ OPT_BEGIN,
};
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 },
+ { "begin", 'b', POPT_ARG_NONE, NULL, OPT_BEGIN, NULL, NULL },
+ { "pid", 'p', POPT_ARG_STRING, &opt_tid, OPT_PID, NULL, NULL },
+ { "hostname", 'n', POPT_ARG_STRING, &opt_hostname, OPT_HOSTNAME, NULL, NULL },
+ { "relay-hostname", 'r', POPT_ARG_STRING, &opt_relay_hostname,
+ OPT_RELAY_HOSTNAME, NULL, NULL },
+ { "kprobes", 'k', POPT_ARG_STRING, &opt_kprobes, OPT_KPROBES, NULL, NULL },
{ NULL, 0, 0, NULL, 0, NULL, NULL },
};
+#ifdef LTTNGTOP_MMAP_LIVE
+static void handle_textdump_sigterm(int signal)
+{
+ quit = 1;
+ lttng_destroy_session("test");
+}
+#endif
+
void *refresh_thread(void *p)
{
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) {
+#ifdef LTTNGTOP_MMAP_LIVE
+ mmap_live_flush(mmap_list);
+#endif
+ }
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);
- }
}
}
-/* FIXME : TMP */
-struct tm ts_format_timestamp(uint64_t timestamp)
+void print_fields(struct bt_ctf_event *event)
{
- struct tm tm;
- uint64_t ts_sec = 0, ts_nsec;
- time_t time_s;
-
- ts_nsec = timestamp;
- ts_sec += ts_nsec / NSEC_PER_SEC;
- ts_nsec = ts_nsec % NSEC_PER_SEC;
-
- time_s = (time_t) ts_sec;
-
- localtime_r(&time_s, &tm);
-
- return tm;
+ unsigned int cnt, i;
+ const struct bt_definition *const * list;
+ const struct bt_declaration *l;
+ const struct bt_definition *scope;
+ enum ctf_type_id type;
+ const char *str;
+
+ scope = bt_ctf_get_top_level_scope(event, BT_EVENT_FIELDS);
+
+ bt_ctf_get_field_list(event, scope, &list, &cnt);
+ for (i = 0; i < cnt; i++) {
+ if (i != 0)
+ printf(", ");
+ printf("%s = ", bt_ctf_field_name(list[i]));
+ l = bt_ctf_get_decl_from_def(list[i]);
+ type = bt_ctf_field_type(l);
+ if (type == CTF_TYPE_INTEGER) {
+ if (bt_ctf_get_int_signedness(l) == 0)
+ printf("%" PRIu64 "", bt_ctf_get_uint64(list[i]));
+ else
+ printf("%" PRId64 "", bt_ctf_get_int64(list[i]));
+ } else if (type == CTF_TYPE_STRING) {
+ printf("%s", bt_ctf_get_string(list[i]));
+ } else if (type == CTF_TYPE_ARRAY) {
+ str = bt_ctf_get_char_array(list[i]);
+ if (!bt_ctf_field_get_error() && str)
+ printf("%s", str);
+ }
+ }
}
/*
{
unsigned long timestamp;
struct tm start;
- uint64_t ts_nsec_start, ts_nsec_end;
-
+ uint64_t ts_nsec_start;
+ int pid, cpu_id;
+ int64_t syscall_ret;
+ const struct bt_definition *scope;
+ const char *hostname, *procname;
timestamp = bt_ctf_get_timestamp(call_data);
- start = ts_format_timestamp(timestamp);
+ /* can happen in network live when tracing is idle */
+ if (timestamp < last_event_ts)
+ goto end_stop;
+
+ last_event_ts = timestamp;
+
+ start = format_timestamp(timestamp);
ts_nsec_start = timestamp % NSEC_PER_SEC;
-// printf("%02d:%02d:%02d.%09" PRIu64 "\n", start.tm_hour, start.tm_min, start.tm_sec, ts_nsec_start);
+ pid = get_context_pid(call_data);
+ if (pid == -1ULL && opt_tid) {
+ goto error;
+ }
+
+ hostname = get_context_hostname(call_data);
+ if (opt_tid || opt_hostname)
+ if (!lookup_filter_tid_list(pid))
+ goto end;
+
+ cpu_id = get_cpu_id(call_data);
+ procname = get_context_comm(call_data);
+
+ if ((strcmp(bt_ctf_event_name(call_data), "exit_syscall") == 0) &&
+ !last_textdump_print_newline) {
+ 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 " (%s) (cpu %d) [%s (%d)] %s (",
+ start.tm_hour, start.tm_min, start.tm_sec,
+ ts_nsec_start, hostname, cpu_id, procname, pid,
+ bt_ctf_event_name(call_data));
+ print_fields(call_data);
+ printf(") ");
+ if (strncmp(bt_ctf_event_name(call_data), "sys_", 4) != 0) {
+ printf("\n");
+ last_textdump_print_newline = 1;
+ } else {
+ last_textdump_print_newline = 0;
+ }
+ }
+
+end:
+ return BT_CB_OK;
+error:
+ return BT_CB_ERROR_STOP;
+end_stop:
+ return BT_CB_OK_STOP;
+}
+
+enum bt_cb_ret handle_kprobes(struct bt_ctf_event *call_data, void *private_data)
+{
+ int i;
+ struct kprobes *kprobe;
+
+ /* for kprobes */
+ for (i = 0; i < lttngtop.kprobes_table->len; i++) {
+ kprobe = g_ptr_array_index(lttngtop.kprobes_table, i);
+ if (strcmp(bt_ctf_event_name(call_data), kprobe->probe_name) == 0) {
+ kprobe->count++;
+ }
+ }
return BT_CB_OK;
}
if (timestamp == -1ULL)
goto error;
+ /* can happen in network live when tracing is idle */
+ if (timestamp < last_event_ts)
+ goto end_stop;
+
+ last_event_ts = timestamp;
+
if (last_display_update == 0)
last_display_update = timestamp;
error:
fprintf(stderr, "check_timestamp callback error\n");
return BT_CB_ERROR_STOP;
+
+end_stop:
+ return BT_CB_OK_STOP;
}
/*
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);
+ child = add_proc(<tngtop, tid, comm, timestamp, hostname);
+ 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;
+ parent = add_proc(<tngtop, pid, comm, timestamp, hostname);
+ if (parent)
+ parent->pid = pid;
}
/* attach the parent to the current process */
update_perf_counter(child, call_data);
+end:
return BT_CB_OK;
error:
{
copies = g_ptr_array_new();
global_perf_liszt = g_hash_table_new(g_str_hash, g_str_equal);
+ global_filter_list = g_hash_table_new(g_str_hash, g_str_equal);
+ global_host_list = g_hash_table_new(g_str_hash, g_str_equal);
sem_init(&goodtodisplay, 0, 0);
sem_init(&goodtoupdate, 0, 1);
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();
+
+ toggle_filter = -1;
}
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");
+ fprintf(fp, " -k, --kprobes Comma-separated list of kprobes to insert (same format as lttng enable-event)\n");
+}
+
+/*
+ * Parse probe options.
+ * Shamelessly stolen from lttng-tools :
+ * src/bin/lttng/commands/enable_events.c
+ */
+static struct kprobes *parse_probe_opts(char *opt)
+{
+ char s_hex[19];
+ char name[LTTNG_SYMBOL_NAME_LEN];
+ struct kprobes *kprobe;
+ int ret;
+
+ /*
+ kprobe->probe_addr = 0;
+ kprobe->probe_offset = 0;
+ asprintf(&kprobe->probe_name, "probe_sys_open");
+ asprintf(&kprobe->symbol_name, "sys_open");
+ */
+
+ if (opt == NULL) {
+ kprobe = NULL;
+ goto end;
+ }
+
+ kprobe = g_new0(struct kprobes, 1);
+
+ /* Check for symbol+offset */
+ ret = sscanf(opt, "%[^'+']+%s", name, s_hex);
+ if (ret == 2) {
+ ret = asprintf(&kprobe->probe_name, "probe_%s", name);
+ ret = asprintf(&kprobe->symbol_name, "%s", name);
+
+ if (strlen(s_hex) == 0) {
+ fprintf(stderr, "Invalid probe offset %s", s_hex);
+ ret = -1;
+ goto end;
+ }
+ kprobe->probe_offset = strtoul(s_hex, NULL, 0);
+ kprobe->probe_addr = 0;
+ goto end;
+ }
+
+ /* Check for symbol */
+ if (isalpha(name[0])) {
+ ret = sscanf(opt, "%s", name);
+ if (ret == 1) {
+ ret = asprintf(&kprobe->probe_name, "probe_%s", name);
+ ret = asprintf(&kprobe->symbol_name, "%s", name);
+ kprobe->probe_offset = 0;
+ kprobe->probe_addr = 0;
+ goto end;
+ }
+ }
+
+ /* Check for address */
+ ret = sscanf(opt, "%s", s_hex);
+ if (ret > 0) {
+ if (strlen(s_hex) == 0) {
+ fprintf(stderr, "Invalid probe address %s", s_hex);
+ ret = -1;
+ goto end;
+ }
+ ret = asprintf(&kprobe->probe_name, "probe_%s", s_hex);
+ kprobe->probe_offset = 0;
+ kprobe->probe_addr = strtoul(s_hex, NULL, 0);
+ goto end;
+ }
+
+ /* No match */
+ kprobe = NULL;
+
+end:
+ return kprobe;
}
/*
{
poptContext pc;
int opt, ret = 0;
+ char *tmp_str;
+ int *tid;
+
+ remote_live = 0;
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:
+ toggle_filter = 1;
+ tid_filter_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_filter_list,
+ (gpointer) tid, tid);
+ tmp_str = strtok(NULL, ",");
+ }
+ break;
+ case OPT_BEGIN:
+ /* start reading the live trace from the beginning */
+ opt_begin = 1;
+ break;
+ case OPT_HOSTNAME:
+ toggle_filter = 1;
+ tmp_str = strtok(opt_hostname, ",");
+ while (tmp_str) {
+ add_hostname_list(tmp_str, 1);
+ tmp_str = strtok(NULL, ",");
+ }
+ break;
+ case OPT_RELAY_HOSTNAME:
+ remote_live = 1;
+ break;
+ case OPT_KPROBES:
+ lttngtop.kprobes_table = g_ptr_array_new();
+ tmp_str = strtok(opt_kprobes, ",");
+ while (tmp_str) {
+ struct kprobes *kprobe;
+
+ kprobe = parse_probe_opts(tmp_str);
+ if (kprobe) {
+ g_ptr_array_add(
+ lttngtop.kprobes_table,
+ kprobe);
+ } else {
+ ret = -EINVAL;
+ goto end;
+ }
+ tmp_str = strtok(NULL, ",");
+ }
+ break;
default:
ret = -EINVAL;
goto end;
{
struct bt_ctf_iter *iter;
struct bt_iter_pos begin_pos;
+ struct kprobes *kprobe;
const struct bt_ctf_event *event;
+ int i;
int ret = 0;
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,
- 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);
+ /* 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);
-#endif
+ NULL, 0, handle_statedump_file_descriptor,
+ NULL, NULL, NULL);
+
+ /* for kprobes */
+ if (lttngtop.kprobes_table) {
+ for (i = 0; i < lttngtop.kprobes_table->len; i++) {
+ kprobe = g_ptr_array_index(lttngtop.kprobes_table, i);
+ bt_ctf_iter_add_callback(iter,
+ g_quark_from_static_string(
+ kprobe->probe_name),
+ NULL, 0, handle_kprobes,
+ NULL, NULL, NULL);
+ }
+ }
+ }
+
while ((event = bt_ctf_iter_read_event(iter)) != NULL) {
+ if (quit || reload_trace)
+ goto end_iter;
ret = bt_iter_next(bt_ctf_get_iter(iter));
if (ret < 0)
goto end_iter;
metafd = openat(dirfd, "metadata", O_RDONLY);
if (metafd < 0) {
close(dirfd);
- ret = -1;
continue;
} else {
int trace_id;
int ppid_check = 0;
int ret = 0;
- bt_ctf_get_event_decl_list(0, ctx, &evt_list, &evt_cnt);
+ ret = bt_ctf_get_event_decl_list(0, ctx, &evt_list, &evt_cnt);
+ if (ret < 0) {
+ goto end;
+ }
+
for (i = 0; i < evt_cnt; i++) {
bt_ctf_get_decl_fields(evt_list[i], BT_STREAM_EVENT_CONTEXT,
&field_list, &field_cnt);
fprintf(stderr, "[error] missing procname context information\n");
}
- 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)
-{
- 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 */
- printf("get_next : %d\n", infd);
- 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;
- }
- printf("len : %ld\n", len);
-
- /* 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");
- }
- printf("ret : %ld\n", ret);
- printf("put_next : %d\n", infd);
- 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_info;
- size_t tmp_mmap_len;
-
- /* 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_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);
-
- 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;
- }
-
- 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;
- }
-
-end:
- 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 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);
- sleep(1);
- }
-}
-
-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;
}
-void *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 end;
- }
-
- available_snapshots = g_ptr_array_new();
-
- /* setup the session */
- dom.type = LTTNG_DOMAIN_KERNEL;
-
- ret = system("rm -rf /tmp/livesession");
-
- if ((ret = lttng_create_session("test", "/tmp/livesession")) < 0) {
- fprintf(stderr,"error creating the session : %s\n",
- helper_lttcomm_get_readable_code(ret));
- goto end;
- }
-
- if ((handle = lttng_create_handle("test", &dom)) == NULL) {
- fprintf(stderr,"error creating handle\n");
- goto end;
- }
-
- if ((ret = lttng_register_consumer(handle, command_sock_path)) < 0) {
- fprintf(stderr,"error registering consumer : %s\n",
- helper_lttcomm_get_readable_code(ret));
- goto end;
- }
-
- strcpy(chan.name, channel_name);
- 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;
- 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 end;
- }
-
- sprintf(ev.name, "sched_switch");
- ev.type = LTTNG_EVENT_TRACEPOINT;
-
- //if ((ret = lttng_enable_event(handle, NULL, channel_name)) < 0) {
- if ((ret = lttng_enable_event(handle, &ev, channel_name)) < 0) {
- fprintf(stderr,"error enabling event : %s\n", helper_lttcomm_get_readable_code(ret));
- goto end;
- }
-
- kctxpid.ctx = LTTNG_EVENT_CONTEXT_PID;
- lttng_add_context(handle, &kctxpid, 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);
- kctxtid.ctx = LTTNG_EVENT_CONTEXT_TID;
- 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 end;
- }
-
- helper_kernctl_buffer_flush(consumerd_metadata);
-
- /* 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);
-
- //init_lttngtop();
-
-end:
- return NULL;
-}
-
int main(int argc, char **argv)
{
int ret;
struct bt_context *bt_ctx = NULL;
+ init_lttngtop();
ret = parse_options(argc, argv);
if (ret < 0) {
fprintf(stdout, "Error parsing options.\n\n");
exit(EXIT_SUCCESS);
}
- if (!opt_input_path) {
- printf("live tracing enabled\n");
- pthread_create(&live_trace_thread, NULL, setup_live_tracing, (void *) NULL);
- sleep(20);
- printf("STOPPING\n");
+ if (!opt_input_path && !remote_live) {
+ /* mmap live */
+#ifdef LTTNGTOP_MMAP_LIVE
+ if (opt_textdump) {
+ signal(SIGTERM, handle_textdump_sigterm);
+ signal(SIGINT, handle_textdump_sigterm);
+ }
+ mmap_live_loop(bt_ctx);
+ pthread_join(timer_thread, NULL);
+ quit = 1;
+ pthread_join(display_thread, NULL);
+
lttng_stop_tracing("test");
- printf("DESTROYING\n");
lttng_destroy_session("test");
- printf("CANCELLING\n");
- pthread_cancel(live_trace_thread);
goto end;
+#else
+ fprintf(stderr, "Mmap live support not compiled\n");
+ goto end;
+#endif /* LTTNGTOP_MMAP_LIVE */
+ } else if (!opt_input_path && remote_live) {
+ /* network live */
+ ret = setup_network_live(opt_relay_hostname, opt_begin);
+ if (ret < 0) {
+ goto end;
+ }
+
+ ret = open_trace(&bt_ctx);
+ if (ret < 0) {
+ goto end;
+ }
} else {
- init_lttngtop();
+ //init_lttngtop();
bt_ctx = bt_context_create();
ret = bt_context_add_traces_recursive(bt_ctx, opt_input_path, "ctf", NULL);
fprintf(stderr, "[error] Opening the trace\n");
goto end;
}
+ }
- ret = check_requirements(bt_ctx);
- if (ret < 0) {
- fprintf(stderr, "[error] some mandatory contexts were missing, exiting.\n");
- goto end;
- }
+ ret = check_requirements(bt_ctx);
+ if (ret < 0) {
+ fprintf(stderr, "[error] some mandatory contexts were missing, exiting.\n");
+ goto end;
+ }
+ if (!opt_textdump) {
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:
if (bt_ctx)
projects / lttngtop.git / blobdiff