char cmd_unix_sock_path[PATH_MAX];
};
+#include "benchmark.h"
+
/* Const values */
const char default_home_dir[] = DEFAULT_HOME_DIR;
const char default_tracing_group[] = LTTNG_DEFAULT_TRACING_GROUP;
int ust_consumerd64_fd = -1;
int ust_consumerd32_fd = -1;
- static const char *consumerd32_path =
- __stringify(CONFIG_CONSUMERD32_PATH);
- static const char *consumerd64_path =
- __stringify(CONFIG_CONSUMERD64_PATH);
+ static const char *consumerd32_bin =
+ __stringify(CONFIG_CONSUMERD32_BIN);
+ static const char *consumerd64_bin =
+ __stringify(CONFIG_CONSUMERD64_BIN);
static const char *consumerd32_libdir =
__stringify(CONFIG_CONSUMERD32_LIBDIR);
static const char *consumerd64_libdir =
static
void setup_consumerd_path(void)
{
- const char *path, *libdir;
+ const char *bin, *libdir;
/*
* Allow INSTALL_BIN_PATH to be used as a target path for the
* has not been defined.
*/
#if (CAA_BITS_PER_LONG == 32)
- if (!consumerd32_path[0]) {
- consumerd32_path = INSTALL_BIN_PATH "/" CONSUMERD_FILE;
+ if (!consumerd32_bin[0]) {
+ consumerd32_bin = INSTALL_BIN_PATH "/" CONSUMERD_FILE;
}
if (!consumerd32_libdir[0]) {
consumerd32_libdir = INSTALL_LIB_PATH;
}
#elif (CAA_BITS_PER_LONG == 64)
- if (!consumerd64_path[0]) {
- consumerd64_path = INSTALL_BIN_PATH "/" CONSUMERD_FILE;
+ if (!consumerd64_bin[0]) {
+ consumerd64_bin = INSTALL_BIN_PATH "/" CONSUMERD_FILE;
}
if (!consumerd64_libdir[0]) {
consumerd64_libdir = INSTALL_LIB_PATH;
/*
* runtime env. var. overrides the build default.
*/
- path = getenv("LTTNG_CONSUMERD32_PATH");
- if (path) {
- consumerd32_path = path;
+ bin = getenv("LTTNG_CONSUMERD32_BIN");
+ if (bin) {
+ consumerd32_bin = bin;
}
- path = getenv("LTTNG_CONSUMERD64_PATH");
- if (path) {
- consumerd64_path = path;
+ bin = getenv("LTTNG_CONSUMERD64_BIN");
+ if (bin) {
+ consumerd64_bin = bin;
}
libdir = getenv("LTTNG_TOOLS_CONSUMERD32_LIBDIR");
if (libdir) {
close(thread_quit_pipe[0]);
close(thread_quit_pipe[1]);
+ /* OUTPUT BENCHMARK RESULTS */
+ bench_init();
+
+ if (getenv("BENCH_UST_NOTIFY")) {
+ bench_print_ust_notification();
+ }
+
+ if (getenv("BENCH_UST_REGISTER")) {
+ bench_print_ust_register();
+ bench_print_ust_unregister();
+ }
+
+ if (getenv("BENCH_BOOT_PROCESS")) {
+ bench_print_boot_process();
+ }
+
+ bench_close();
+ /* END BENCHMARK */
+
/* <fun> */
MSG("%c[%d;%dm*** assert failed :-) *** ==> %c[%dm%c[%d;%dm"
"Matthew, BEET driven development works!%c[%dm",
DBG("Notifying applications of session daemon state: %d", active);
+ tracepoint(ust_notify_apps_start);
+
/* See shm.c for this call implying mmap, shm and futex calls */
wait_shm_mmap = shm_ust_get_mmap(wait_shm_path, is_root);
if (wait_shm_mmap == NULL) {
/* Wake waiting process */
futex_wait_update((int32_t *) wait_shm_mmap, active);
+ tracepoint(ust_notify_apps_stop);
+
/* Apps notified successfully */
return 0;
char tmp;
struct lttng_poll_event events;
+ tracepoint(sessiond_th_kern_start);
+
DBG("Thread manage kernel started");
ret = create_thread_poll_set(&events, 2);
/* Zeroed the poll events */
lttng_poll_reset(&events);
+ tracepoint(sessiond_th_kern_poll);
+
/* Poll infinite value of time */
ret = lttng_poll_wait(&events, -1);
if (ret < 0) {
struct lttng_poll_event events;
struct consumer_data *consumer_data = data;
+ tracepoint(sessiond_th_kcon_start);
+
DBG("[thread] Manage consumer started");
ret = lttcomm_listen_unix_sock(consumer_data->err_sock);
nb_fd = LTTNG_POLL_GETNB(&events);
+ tracepoint(sessiond_th_kcon_poll);
+
/* Inifinite blocking call, waiting for transmission */
ret = lttng_poll_wait(&events, -1);
if (ret < 0) {
struct ust_command ust_cmd;
struct lttng_poll_event events;
+ tracepoint(sessiond_th_apps_start);
+
DBG("[thread] Manage application started");
rcu_register_thread();
DBG("Apps thread polling on %d fds", nb_fd);
+ tracepoint(sessiond_th_apps_poll);
+
/* Inifinite blocking call, waiting for transmission */
ret = lttng_poll_wait(&events, -1);
if (ret < 0) {
ERR("Apps command pipe error");
goto error;
} else if (revents & LPOLLIN) {
+ tracepoint(ust_register_read_start);
/* Empty pipe */
ret = read(apps_cmd_pipe[0], &ust_cmd, sizeof(ust_cmd));
if (ret < 0 || ret < sizeof(ust_cmd)) {
perror("read apps cmd pipe");
goto error;
}
+ tracepoint(ust_register_read_stop);
+ tracepoint(ust_register_add_start);
/* Register applicaton to the session daemon */
ret = ust_app_register(&ust_cmd.reg_msg,
ust_cmd.sock);
} else if (ret < 0) {
break;
}
+ tracepoint(ust_register_add_stop);
+ tracepoint(ust_register_done_start);
/*
* Add channel(s) and event(s) to newly registered apps
* from lttng global UST domain.
DBG("Apps with sock %d added to poll set",
ust_cmd.sock);
}
-
+ tracepoint(ust_register_done_stop);
break;
}
} else {
* the event at poll_wait.
*/
if (revents & (LPOLLERR | LPOLLHUP | LPOLLRDHUP)) {
+ tracepoint(ust_unregister_start);
+
/* Removing from the poll set */
ret = lttng_poll_del(&events, pollfd);
if (ret < 0) {
/* Socket closed on remote end. */
ust_app_unregister(pollfd);
+
+ tracepoint(ust_unregister_stop);
break;
}
}
struct cds_wfq_node *node;
struct ust_command *ust_cmd = NULL;
+ tracepoint(sessiond_th_dispatch_start);
+
DBG("[thread] Dispatch UST command started");
while (!dispatch_thread_exit) {
futex_nto1_prepare(&ust_cmd_queue.futex);
do {
+ tracepoint(sessiond_th_dispatch_block);
+
/* Dequeue command for registration */
node = cds_wfq_dequeue_blocking(&ust_cmd_queue.queue);
if (node == NULL) {
break;
}
+ tracepoint(ust_dispatch_register_start);
+
ust_cmd = caa_container_of(node, struct ust_command, node);
DBG("Dispatching UST registration pid:%d ppid:%d uid:%d"
free(ust_cmd);
} while (node != NULL);
+ tracepoint(ust_dispatch_register_stop);
+
/* Futex wait on queue. Blocking call on futex() */
futex_nto1_wait(&ust_cmd_queue.futex);
}
*/
struct ust_command *ust_cmd = NULL;
+ tracepoint(sessiond_th_reg_start);
+
DBG("[thread] Manage application registration started");
ret = lttcomm_listen_unix_sock(apps_sock);
while (1) {
DBG("Accepting application registration");
+ tracepoint(sessiond_th_reg_poll);
+
nb_fd = LTTNG_POLL_GETNB(&events);
/* Inifinite blocking call, waiting for transmission */
ERR("Register apps socket poll error");
goto error;
} else if (revents & LPOLLIN) {
+ /* Registration starts here. Recording cycles */
+ tracepoint(ust_register_start);
+
sock = lttcomm_accept_unix_sock(apps_sock);
if (sock < 0) {
goto error;
* barrier with the exchange in cds_wfq_enqueue.
*/
futex_nto1_wake(&ust_cmd_queue.futex);
+
+ tracepoint(ust_register_stop);
}
}
}
{
int ret;
pid_t pid;
+ const char *consumer_to_use;
const char *verbosity;
+ struct stat st;
DBG("Spawning consumerd");
}
switch (consumer_data->type) {
case LTTNG_CONSUMER_KERNEL:
- execl(INSTALL_BIN_PATH "/lttng-consumerd",
- "lttng-consumerd", verbosity, "-k",
- "--consumerd-cmd-sock", consumer_data->cmd_unix_sock_path,
- "--consumerd-err-sock", consumer_data->err_unix_sock_path,
- NULL);
+ /*
+ * Find out which consumerd to execute. We will
+ * first try the 64-bit path, then the
+ * sessiond's installation directory, and
+ * fallback on the 32-bit one,
+ */
+ if (stat(consumerd64_bin, &st) == 0) {
+ consumer_to_use = consumerd64_bin;
+ } else if (stat(INSTALL_BIN_PATH "/" CONSUMERD_FILE, &st) == 0) {
+ consumer_to_use = INSTALL_BIN_PATH "/" CONSUMERD_FILE;
+ } else if (stat(consumerd32_bin, &st) == 0) {
+ consumer_to_use = consumerd32_bin;
+ } else {
+ break;
+ }
+ DBG("Using kernel consumer at: %s", consumer_to_use);
+ execl(consumer_to_use,
+ "lttng-consumerd", verbosity, "-k",
+ "--consumerd-cmd-sock", consumer_data->cmd_unix_sock_path,
+ "--consumerd-err-sock", consumer_data->err_unix_sock_path,
+ NULL);
break;
case LTTNG_CONSUMER64_UST:
{
goto error;
}
}
- ret = execl(consumerd64_path, verbosity, "-u",
+ DBG("Using 64-bit UST consumer at: %s", consumerd64_bin);
+ ret = execl(consumerd64_bin, verbosity, "-u",
"--consumerd-cmd-sock", consumer_data->cmd_unix_sock_path,
"--consumerd-err-sock", consumer_data->err_unix_sock_path,
NULL);
goto error;
}
}
- ret = execl(consumerd32_path, verbosity, "-u",
+ DBG("Using 32-bit UST consumer at: %s", consumerd32_bin);
+ ret = execl(consumerd32_bin, verbosity, "-u",
"--consumerd-cmd-sock", consumer_data->cmd_unix_sock_path,
"--consumerd-err-sock", consumer_data->err_unix_sock_path,
NULL);
tmp[i].type = LTTNG_EVENT_FUNCTION;
break;
case LTTNG_UST_TRACEPOINT_LOGLEVEL:
- /* TODO */
- ret = -LTTCOMM_NOT_IMPLEMENTED;
- goto error;
+ tmp[i].type = LTTNG_EVENT_TRACEPOINT_LOGLEVEL;
break;
}
i++;
case LTTNG_DOMAIN_UST:
{
struct ltt_ust_channel *uchan;
+ struct cds_lfht *chan_ht;
- /* Get channel in global UST domain HT */
- uchan = trace_ust_find_channel_by_name(usess->domain_global.channels,
- channel_name);
+ chan_ht = usess->domain_global.channels;
+
+ uchan = trace_ust_find_channel_by_name(chan_ht, channel_name);
if (uchan == NULL) {
ret = LTTCOMM_UST_CHAN_NOT_FOUND;
goto error;
}
- /* Already disabled */
- if (!uchan->enabled) {
- DBG2("UST channel %s already disabled", channel_name);
- break;
- }
-
- ret = ust_app_disable_channel_glb(usess, uchan);
- if (ret < 0) {
- ret = LTTCOMM_UST_DISABLE_FAIL;
+ ret = channel_ust_disable(usess, domain, uchan);
+ if (ret != LTTCOMM_OK) {
goto error;
}
-
- uchan->enabled = 0;
-
break;
}
case LTTNG_DOMAIN_UST_PID_FOLLOW_CHILDREN:
return ret;
}
- /*
- * Copy channel from attributes and set it in the application channel list.
- */
- /*
- static int copy_ust_channel_to_app(struct ltt_ust_session *usess,
- struct lttng_channel *attr, struct ust_app *app)
- {
- int ret;
- struct ltt_ust_channel *uchan, *new_chan;
-
- uchan = trace_ust_get_channel_by_key(usess->channels, attr->name);
- if (uchan == NULL) {
- ret = LTTCOMM_FATAL;
- goto error;
- }
-
- new_chan = trace_ust_create_channel(attr, usess->path);
- if (new_chan == NULL) {
- PERROR("malloc ltt_ust_channel");
- ret = LTTCOMM_FATAL;
- goto error;
- }
-
- ret = channel_ust_copy(new_chan, uchan);
- if (ret < 0) {
- ret = LTTCOMM_FATAL;
- goto error;
- }
-
- error:
- return ret;
- }
- */
-
/*
* Command LTTNG_ENABLE_CHANNEL processed by the client thread.
*/
{
int ret;
struct ltt_ust_session *usess = session->ust_session;
+ struct cds_lfht *chan_ht;
DBG("Enabling channel %s for session %s", attr->name, session->name);
{
struct ltt_ust_channel *uchan;
- DBG2("Enabling channel for LTTNG_DOMAIN_UST");
+ chan_ht = usess->domain_global.channels;
- /* Get channel in global UST domain HT */
- uchan = trace_ust_find_channel_by_name(usess->domain_global.channels,
- attr->name);
+ uchan = trace_ust_find_channel_by_name(chan_ht, attr->name);
if (uchan == NULL) {
- uchan = trace_ust_create_channel(attr, usess->pathname);
- if (uchan == NULL) {
- ret = LTTCOMM_UST_CHAN_FAIL;
- goto error;
- }
-
- /* Add channel to all registered applications */
- ret = ust_app_create_channel_glb(usess, uchan);
- if (ret != 0) {
- ret = LTTCOMM_UST_CHAN_FAIL;
- goto error;
- }
-
- rcu_read_lock();
- hashtable_add_unique(usess->domain_global.channels, &uchan->node);
- rcu_read_unlock();
-
- DBG2("UST channel %s added to global domain HT", attr->name);
+ ret = channel_ust_create(usess, domain, attr);
} else {
- /* If already enabled, everything is OK */
- if (uchan->enabled) {
- break;
- }
-
- ret = ust_app_enable_channel_glb(usess, uchan);
- if (ret < 0) {
- if (ret != -EEXIST) {
- ret = LTTCOMM_UST_CHAN_ENABLE_FAIL;
- goto error;
- } else {
- ret = LTTCOMM_OK;
- }
- }
+ ret = channel_ust_enable(usess, domain, uchan);
}
-
- uchan->enabled = 1;
-
break;
}
case LTTNG_DOMAIN_UST_PID_FOLLOW_CHILDREN:
goto error;
}
- ret = LTTCOMM_OK;
-
error:
return ret;
}
}
case LTTNG_DOMAIN_UST:
{
- struct ltt_ust_session *usess;
struct ltt_ust_channel *uchan;
- struct ltt_ust_event *uevent;
+ struct ltt_ust_session *usess;
usess = session->ust_session;
goto error;
}
- uevent = trace_ust_find_event_by_name(uchan->events, event_name);
- if (uevent == NULL) {
- ret = LTTCOMM_UST_EVENT_NOT_FOUND;
- goto error;
- }
-
- ret = ust_app_disable_event_glb(usess, uchan, uevent);
- if (ret < 0) {
- ret = LTTCOMM_UST_DISABLE_FAIL;
+ ret = event_ust_disable_tracepoint(usess, domain, uchan, event_name);
+ if (ret != LTTCOMM_OK) {
goto error;
}
- uevent->enabled = 0;
-
- DBG2("Disable UST event %s in channel %s completed", event_name,
+ DBG3("Disable UST event %s in channel %s completed", event_name,
channel_name);
-
break;
}
case LTTNG_DOMAIN_UST_EXEC_NAME:
goto error;
}
- ret = ust_app_disable_all_event_glb(usess, uchan);
- if (ret < 0) {
- ret = LTTCOMM_UST_DISABLE_FAIL;
+ ret = event_ust_disable_all_tracepoints(usess, domain, uchan);
+ if (ret != 0) {
goto error;
}
- DBG2("Disable all UST event in channel %s completed", channel_name);
+ DBG3("Disable all UST events in channel %s completed", channel_name);
break;
}
/*
* Command LTTNG_ENABLE_EVENT processed by the client thread.
+ *
+ * TODO: currently, both events and loglevels are kept within the same
+ * namespace for UST global registry/app registery, so if an event
+ * happen to have the same name as the loglevel (very unlikely though),
+ * and an attempt is made to enable/disable both in the same session,
+ * the first to be created will be the only one allowed to exist.
*/
static int cmd_enable_event(struct ltt_session *session, int domain,
char *channel_name, struct lttng_event *event)
snprintf(attr->name, NAME_MAX, "%s", channel_name);
attr->name[NAME_MAX - 1] = '\0';
- /* Use the internal command enable channel */
- ret = cmd_enable_channel(session, domain, attr);
+ ret = channel_ust_create(usess, domain, attr);
if (ret != LTTCOMM_OK) {
free(attr);
goto error;
}
switch (event_type) {
- case LTTNG_KERNEL_SYSCALL:
+ case LTTNG_EVENT_SYSCALL:
ret = event_kernel_enable_all_syscalls(session->kernel_session,
kchan, kernel_tracer_fd);
break;
- case LTTNG_KERNEL_TRACEPOINT:
+ case LTTNG_EVENT_TRACEPOINT:
/*
* This call enables all LTTNG_KERNEL_TRACEPOINTS and
* events already registered to the channel.
ret = event_kernel_enable_all_tracepoints(session->kernel_session,
kchan, kernel_tracer_fd);
break;
- case LTTNG_KERNEL_ALL:
+ case LTTNG_EVENT_ALL:
/* Enable syscalls and tracepoints */
ret = event_kernel_enable_all(session->kernel_session,
kchan, kernel_tracer_fd);
kernel_wait_quiescent(kernel_tracer_fd);
break;
+ case LTTNG_DOMAIN_UST:
+ {
+ struct lttng_channel *attr;
+ struct ltt_ust_channel *uchan;
+ struct ltt_ust_session *usess = session->ust_session;
+
+ /* Get channel from global UST domain */
+ uchan = trace_ust_find_channel_by_name(usess->domain_global.channels,
+ channel_name);
+ if (uchan == NULL) {
+ /* Create default channel */
+ attr = channel_new_default_attr(domain);
+ if (attr == NULL) {
+ ret = LTTCOMM_FATAL;
+ goto error;
+ }
+ snprintf(attr->name, NAME_MAX, "%s", channel_name);
+ attr->name[NAME_MAX - 1] = '\0';
+
+ /* Use the internal command enable channel */
+ ret = channel_ust_create(usess, domain, attr);
+ if (ret != LTTCOMM_OK) {
+ free(attr);
+ goto error;
+ }
+ free(attr);
+
+ /* Get the newly created channel reference back */
+ uchan = trace_ust_find_channel_by_name(
+ usess->domain_global.channels, channel_name);
+ if (uchan == NULL) {
+ /* Something is really wrong */
+ ret = LTTCOMM_FATAL;
+ goto error;
+ }
+ }
+
+ /* At this point, the session and channel exist on the tracer */
+
+ switch (event_type) {
+ case LTTNG_EVENT_ALL:
+ case LTTNG_EVENT_TRACEPOINT:
+ ret = event_ust_enable_all_tracepoints(usess, domain, uchan);
+ if (ret != LTTCOMM_OK) {
+ goto error;
+ }
+ break;
+ default:
+ ret = LTTCOMM_UST_ENABLE_FAIL;
+ goto error;
+ }
+
+ /* Manage return value */
+ if (ret != LTTCOMM_OK) {
+ goto error;
+ }
+
+ break;
+ }
+ case LTTNG_DOMAIN_UST_EXEC_NAME:
+ case LTTNG_DOMAIN_UST_PID:
+ case LTTNG_DOMAIN_UST_PID_FOLLOW_CHILDREN:
default:
- /* TODO: Userspace tracing */
ret = LTTCOMM_NOT_IMPLEMENTED;
goto error;
}
/* Start the UST consumer daemons */
/* 64-bit */
pthread_mutex_lock(&ustconsumer64_data.pid_mutex);
- if (consumerd64_path[0] != '\0' &&
+ if (consumerd64_bin[0] != '\0' &&
ustconsumer64_data.pid == 0 &&
cmd_ctx->lsm->cmd_type != LTTNG_REGISTER_CONSUMER) {
pthread_mutex_unlock(&ustconsumer64_data.pid_mutex);
pthread_mutex_unlock(&ustconsumer64_data.pid_mutex);
}
/* 32-bit */
- if (consumerd32_path[0] != '\0' &&
+ if (consumerd32_bin[0] != '\0' &&
ustconsumer32_data.pid == 0 &&
cmd_ctx->lsm->cmd_type != LTTNG_REGISTER_CONSUMER) {
pthread_mutex_unlock(&ustconsumer32_data.pid_mutex);
}
case LTTNG_CREATE_SESSION:
{
+ tracepoint(create_session_start);
ret = cmd_create_session(cmd_ctx->lsm->session.name,
cmd_ctx->lsm->session.path);
+ tracepoint(create_session_end);
break;
}
case LTTNG_DESTROY_SESSION:
{
+ tracepoint(destroy_session_start);
ret = cmd_destroy_session(cmd_ctx->session,
cmd_ctx->lsm->session.name);
+ tracepoint(destroy_session_end);
break;
}
case LTTNG_LIST_DOMAINS:
struct command_ctx *cmd_ctx = NULL;
struct lttng_poll_event events;
+ tracepoint(sessiond_th_cli_start);
+
DBG("[thread] Manage client started");
rcu_register_thread();
while (1) {
DBG("Accepting client command ...");
+ tracepoint(sessiond_th_cli_poll);
+
nb_fd = LTTNG_POLL_GETNB(&events);
/* Inifinite blocking call, waiting for transmission */
opt_verbose_consumer += 1;
break;
case 'u':
- consumerd32_path= optarg;
+ consumerd32_bin= optarg;
break;
case 'U':
consumerd32_libdir = optarg;
break;
case 't':
- consumerd64_path = optarg;
+ consumerd64_bin = optarg;
break;
case 'T':
consumerd64_libdir = optarg;
void *status;
const char *home_path;
+ tracepoint(sessiond_boot_start);
rcu_register_thread();
/* Create thread quit pipe */
goto exit_kernel;
}
+ tracepoint(sessiond_boot_end);
+
ret = pthread_join(kernel_thread, &status);
if (ret != 0) {
perror("pthread_join");
projects / lttng-tools.git / commitdiff
