#define _GNU_SOURCE
#include <assert.h>
+#include <urcu/uatomic.h>
#include <common/common.h>
+#include <common/sessiond-comm/jul.h>
+
+#include <common/compat/endian.h>
#include "jul.h"
+#include "ust-app.h"
#include "utils.h"
/*
- * URCU intermediate call to complete destroy a JUL event.
+ * Match function for the events hash table lookup by name.
+ */
+static int ht_match_event_by_name(struct cds_lfht_node *node,
+ const void *_key)
+{
+ struct jul_event *event;
+ const struct jul_ht_key *key;
+
+ assert(node);
+ assert(_key);
+
+ event = caa_container_of(node, struct jul_event, node.node);
+ key = _key;
+
+ /* Match 1 elements of the key: name. */
+
+ /* Event name */
+ if (strncmp(event->name, key->name, sizeof(event->name)) != 0) {
+ goto no_match;
+ }
+ /* Match. */
+ return 1;
+
+no_match:
+ return 0;
+}
+
+/*
+ * Match function for the events hash table lookup by name and loglevel.
+ */
+static int ht_match_event(struct cds_lfht_node *node,
+ const void *_key)
+{
+ struct jul_event *event;
+ const struct jul_ht_key *key;
+
+ assert(node);
+ assert(_key);
+
+ event = caa_container_of(node, struct jul_event, node.node);
+ key = _key;
+
+ /* Match 2 elements of the key: name and loglevel. */
+
+ /* Event name */
+ if (strncmp(event->name, key->name, sizeof(event->name)) != 0) {
+ goto no_match;
+ }
+
+ if (event->loglevel != key->loglevel) {
+ if (event->loglevel_type == LTTNG_EVENT_LOGLEVEL_ALL &&
+ key->loglevel == 0 && event->loglevel == -1) {
+ goto match;
+ }
+ goto no_match;
+ }
+match:
+ return 1;
+
+no_match:
+ return 0;
+}
+
+/*
+ * Add unique JUL event based on the event name and loglevel.
+ */
+static void add_unique_jul_event(struct lttng_ht *ht, struct jul_event *event)
+{
+ struct cds_lfht_node *node_ptr;
+ struct jul_ht_key key;
+
+ assert(ht);
+ assert(ht->ht);
+ assert(event);
+
+ key.name = event->name;
+ key.loglevel = event->loglevel;
+
+ node_ptr = cds_lfht_add_unique(ht->ht,
+ ht->hash_fct(event->node.key, lttng_ht_seed),
+ ht_match_event, &key, &event->node.node);
+ assert(node_ptr == &event->node.node);
+}
+
+/*
+ * URCU delayed JUL event reclaim.
*/
static void destroy_event_jul_rcu(struct rcu_head *head)
{
free(event);
}
+/*
+ * URCU delayed JUL app reclaim.
+ */
+static void destroy_app_jul_rcu(struct rcu_head *head)
+{
+ struct lttng_ht_node_ulong *node =
+ caa_container_of(head, struct lttng_ht_node_ulong, head);
+ struct jul_app *app =
+ caa_container_of(node, struct jul_app, node);
+
+ free(app);
+}
+
+/*
+ * Communication with Java agent. Send the message header to the given
+ * socket in big endian.
+ *
+ * Return 0 on success or else a negative errno message of sendmsg() op.
+ */
+static int send_header(struct lttcomm_sock *sock, uint64_t data_size,
+ uint32_t cmd, uint32_t cmd_version)
+{
+ int ret;
+ ssize_t size;
+ struct lttcomm_jul_hdr msg;
+
+ assert(sock);
+
+ memset(&msg, 0, sizeof(msg));
+ msg.data_size = htobe64(data_size);
+ msg.cmd = htobe32(cmd);
+ msg.cmd_version = htobe32(cmd_version);
+
+ size = sock->ops->sendmsg(sock, &msg, sizeof(msg), 0);
+ if (size < sizeof(msg)) {
+ ret = -errno;
+ goto error;
+ }
+ ret = 0;
+
+error:
+ return ret;
+}
+
+/*
+ * Communication call with the Java agent. Send the payload to the given
+ * socket. The header MUST be sent prior to this call.
+ *
+ * Return 0 on success or else a negative errno value of sendmsg() op.
+ */
+static int send_payload(struct lttcomm_sock *sock, void *data,
+ size_t size)
+{
+ int ret;
+ ssize_t len;
+
+ assert(sock);
+ assert(data);
+
+ len = sock->ops->sendmsg(sock, data, size, 0);
+ if (len < size) {
+ ret = -errno;
+ goto error;
+ }
+ ret = 0;
+
+error:
+ return ret;
+}
+
+/*
+ * Communication call with the Java agent. Receive reply from the agent using
+ * the given socket.
+ *
+ * Return 0 on success or else a negative errno value from recvmsg() op.
+ */
+static int recv_reply(struct lttcomm_sock *sock, void *buf, size_t size)
+{
+ int ret;
+ ssize_t len;
+
+ assert(sock);
+ assert(buf);
+
+ len = sock->ops->recvmsg(sock, buf, size, 0);
+ if (len < size) {
+ ret = -errno;
+ goto error;
+ }
+ ret = 0;
+
+error:
+ return ret;
+}
+
+
+/*
+ * Internal event listing for a given app. Populate events.
+ *
+ * Return number of element in the list or else a negative LTTNG_ERR* code.
+ * On success, the caller is responsible for freeing the memory
+ * allocated for "events".
+ */
+static ssize_t list_events(struct jul_app *app, struct lttng_event **events)
+{
+ int ret, i, len = 0, offset = 0;
+ uint32_t nb_event;
+ size_t data_size;
+ struct lttng_event *tmp_events = NULL;
+ struct lttcomm_jul_list_reply *reply = NULL;
+ struct lttcomm_jul_list_reply_hdr reply_hdr;
+
+ assert(app);
+ assert(app->sock);
+ assert(events);
+
+ DBG2("JUL listing events for app pid: %d and socket %d", app->pid,
+ app->sock->fd);
+
+ ret = send_header(app->sock, 0, JUL_CMD_LIST, 0);
+ if (ret < 0) {
+ goto error_io;
+ }
+
+ /* Get list header so we know how much we'll receive. */
+ ret = recv_reply(app->sock, &reply_hdr, sizeof(reply_hdr));
+ if (ret < 0) {
+ goto error_io;
+ }
+
+ switch (be32toh(reply_hdr.ret_code)) {
+ case JUL_RET_CODE_SUCCESS:
+ data_size = be32toh(reply_hdr.data_size) + sizeof(*reply);
+ break;
+ default:
+ ERR("Java agent returned an unknown code: %" PRIu32,
+ be32toh(reply_hdr.ret_code));
+ ret = LTTNG_ERR_FATAL;
+ goto error;
+ }
+
+ reply = zmalloc(data_size);
+ if (!reply) {
+ ret = LTTNG_ERR_NOMEM;
+ goto error;
+ }
+
+ /* Get the list with the appropriate data size. */
+ ret = recv_reply(app->sock, reply, data_size);
+ if (ret < 0) {
+ goto error_io;
+ }
+
+ nb_event = be32toh(reply->nb_event);
+ tmp_events = zmalloc(sizeof(*tmp_events) * nb_event);
+ if (!tmp_events) {
+ ret = LTTNG_ERR_NOMEM;
+ goto error;
+ }
+
+ for (i = 0; i < nb_event; i++) {
+ offset += len;
+ strncpy(tmp_events[i].name, reply->payload + offset,
+ sizeof(tmp_events[i].name));
+ tmp_events[i].pid = app->pid;
+ tmp_events[i].enabled = -1;
+ len = strlen(reply->payload + offset) + 1;
+ }
+
+ *events = tmp_events;
+
+ free(reply);
+ return nb_event;
+
+error_io:
+ ret = LTTNG_ERR_UST_LIST_FAIL;
+error:
+ free(reply);
+ free(tmp_events);
+ return -ret;
+
+}
+
+/*
+ * Internal enable JUL event on a JUL application. This function
+ * communicates with the Java agent to enable a given event (Logger name).
+ *
+ * Return LTTNG_OK on success or else a LTTNG_ERR* code.
+ */
+static int enable_event(struct jul_app *app, struct jul_event *event)
+{
+ int ret;
+ uint64_t data_size;
+ struct lttcomm_jul_enable msg;
+ struct lttcomm_jul_generic_reply reply;
+
+ assert(app);
+ assert(app->sock);
+ assert(event);
+
+ DBG2("JUL enabling event %s for app pid: %d and socket %d", event->name,
+ app->pid, app->sock->fd);
+
+ data_size = sizeof(msg);
+
+ ret = send_header(app->sock, data_size, JUL_CMD_ENABLE, 0);
+ if (ret < 0) {
+ goto error_io;
+ }
+
+ memset(&msg, 0, sizeof(msg));
+ msg.loglevel = event->loglevel;
+ msg.loglevel_type = event->loglevel_type;
+ strncpy(msg.name, event->name, sizeof(msg.name));
+ ret = send_payload(app->sock, &msg, sizeof(msg));
+ if (ret < 0) {
+ goto error_io;
+ }
+
+ ret = recv_reply(app->sock, &reply, sizeof(reply));
+ if (ret < 0) {
+ goto error_io;
+ }
+
+ switch (be32toh(reply.ret_code)) {
+ case JUL_RET_CODE_SUCCESS:
+ break;
+ case JUL_RET_CODE_UNKNOWN_NAME:
+ ret = LTTNG_ERR_UST_EVENT_NOT_FOUND;
+ goto error;
+ default:
+ ERR("Java agent returned an unknown code: %" PRIu32,
+ be32toh(reply.ret_code));
+ ret = LTTNG_ERR_FATAL;
+ goto error;
+ }
+
+ return LTTNG_OK;
+
+error_io:
+ ret = LTTNG_ERR_UST_ENABLE_FAIL;
+error:
+ return ret;
+}
+
+/*
+ * Internal disable JUL event call on a JUL application. This function
+ * communicates with the Java agent to disable a given event (Logger name).
+ *
+ * Return LTTNG_OK on success or else a LTTNG_ERR* code.
+ */
+static int disable_event(struct jul_app *app, struct jul_event *event)
+{
+ int ret;
+ uint64_t data_size;
+ struct lttcomm_jul_disable msg;
+ struct lttcomm_jul_generic_reply reply;
+
+ assert(app);
+ assert(app->sock);
+ assert(event);
+
+ DBG2("JUL disabling event %s for app pid: %d and socket %d", event->name,
+ app->pid, app->sock->fd);
+
+ data_size = sizeof(msg);
+
+ ret = send_header(app->sock, data_size, JUL_CMD_DISABLE, 0);
+ if (ret < 0) {
+ goto error_io;
+ }
+
+ memset(&msg, 0, sizeof(msg));
+ strncpy(msg.name, event->name, sizeof(msg.name));
+ ret = send_payload(app->sock, &msg, sizeof(msg));
+ if (ret < 0) {
+ goto error_io;
+ }
+
+ ret = recv_reply(app->sock, &reply, sizeof(reply));
+ if (ret < 0) {
+ goto error_io;
+ }
+
+ switch (be32toh(reply.ret_code)) {
+ case JUL_RET_CODE_SUCCESS:
+ break;
+ case JUL_RET_CODE_UNKNOWN_NAME:
+ ret = LTTNG_ERR_UST_EVENT_NOT_FOUND;
+ goto error;
+ default:
+ ERR("Java agent returned an unknown code: %" PRIu32,
+ be32toh(reply.ret_code));
+ ret = LTTNG_ERR_FATAL;
+ goto error;
+ }
+
+ return LTTNG_OK;
+
+error_io:
+ ret = LTTNG_ERR_UST_DISABLE_FAIL;
+error:
+ return ret;
+}
+
+/*
+ * Send back the registration DONE command to a given JUL application.
+ *
+ * Return 0 on success or else a negative value.
+ */
+int jul_send_registration_done(struct jul_app *app)
+{
+ assert(app);
+ assert(app->sock);
+
+ DBG("JUL sending registration done to app socket %d", app->sock->fd);
+
+ return send_header(app->sock, 0, JUL_CMD_REG_DONE, 0);
+}
+
+/*
+ * Enable JUL event on every JUL applications registered with the session
+ * daemon.
+ *
+ * Return LTTNG_OK on success or else a LTTNG_ERR* code.
+ */
+int jul_enable_event(struct jul_event *event)
+{
+ int ret;
+ struct jul_app *app;
+ struct lttng_ht_iter iter;
+
+ assert(event);
+
+ rcu_read_lock();
+
+ cds_lfht_for_each_entry(jul_apps_ht_by_sock->ht, &iter.iter, app,
+ node.node) {
+ /* Enable event on JUL application through TCP socket. */
+ ret = enable_event(app, event);
+ if (ret != LTTNG_OK) {
+ goto error;
+ }
+ }
+
+ event->enabled = 1;
+ ret = LTTNG_OK;
+
+error:
+ rcu_read_unlock();
+ return ret;
+}
+
+/*
+ * Disable JUL event on every JUL applications registered with the session
+ * daemon.
+ *
+ * Return LTTNG_OK on success or else a LTTNG_ERR* code.
+ */
+int jul_disable_event(struct jul_event *event)
+{
+ int ret;
+ struct jul_app *app;
+ struct lttng_ht_iter iter;
+
+ assert(event);
+
+ rcu_read_lock();
+
+ cds_lfht_for_each_entry(jul_apps_ht_by_sock->ht, &iter.iter, app,
+ node.node) {
+ /* Enable event on JUL application through TCP socket. */
+ ret = disable_event(app, event);
+ if (ret != LTTNG_OK) {
+ goto error;
+ }
+ }
+
+ event->enabled = 0;
+ ret = LTTNG_OK;
+
+error:
+ rcu_read_unlock();
+ return ret;
+}
+
+/*
+ * Ask every java agent for the list of possible event (logger name). Events is
+ * allocated with the events of every JUL application.
+ *
+ * Return the number of events or else a negative value.
+ */
+int jul_list_events(struct lttng_event **events)
+{
+ int ret;
+ size_t nbmem, count = 0;
+ struct jul_app *app;
+ struct lttng_event *tmp_events = NULL;
+ struct lttng_ht_iter iter;
+
+ assert(events);
+
+ nbmem = UST_APP_EVENT_LIST_SIZE;
+ tmp_events = zmalloc(nbmem * sizeof(*tmp_events));
+ if (!tmp_events) {
+ PERROR("zmalloc jul list events");
+ ret = -ENOMEM;
+ goto error;
+ }
+
+ rcu_read_lock();
+ cds_lfht_for_each_entry(jul_apps_ht_by_sock->ht, &iter.iter, app,
+ node.node) {
+ ssize_t nb_ev;
+ struct lttng_event *jul_events;
+
+ nb_ev = list_events(app, &jul_events);
+ if (nb_ev < 0) {
+ ret = nb_ev;
+ goto error_unlock;
+ }
+
+ if (count + nb_ev > nbmem) {
+ /* In case the realloc fails, we free the memory */
+ struct lttng_event *new_tmp_events;
+ size_t new_nbmem;
+
+ new_nbmem = max_t(size_t, count + nb_ev, nbmem << 1);
+ DBG2("Reallocating JUL event list from %zu to %zu entries",
+ nbmem, new_nbmem);
+ new_tmp_events = realloc(tmp_events,
+ new_nbmem * sizeof(*new_tmp_events));
+ if (!new_tmp_events) {
+ PERROR("realloc JUL events");
+ ret = -ENOMEM;
+ free(jul_events);
+ goto error_unlock;
+ }
+ /* Zero the new memory */
+ memset(new_tmp_events + nbmem, 0,
+ (new_nbmem - nbmem) * sizeof(*new_tmp_events));
+ nbmem = new_nbmem;
+ tmp_events = new_tmp_events;
+ }
+ memcpy(tmp_events + count, jul_events,
+ nb_ev * sizeof(*tmp_events));
+ free(jul_events);
+ count += nb_ev;
+ }
+ rcu_read_unlock();
+
+ ret = count;
+ *events = tmp_events;
+ return ret;
+
+error_unlock:
+ rcu_read_unlock();
+error:
+ free(tmp_events);
+ return ret;
+}
+
+/*
+ * Create a JUL app object using the given PID.
+ *
+ * Return newly allocated object or else NULL on error.
+ */
+struct jul_app *jul_create_app(pid_t pid, struct lttcomm_sock *sock)
+{
+ struct jul_app *app;
+
+ assert(sock);
+
+ app = zmalloc(sizeof(*app));
+ if (!app) {
+ PERROR("zmalloc JUL create");
+ goto error;
+ }
+
+ app->pid = pid;
+ app->sock = sock;
+ lttng_ht_node_init_ulong(&app->node, (unsigned long) app->sock->fd);
+
+error:
+ return app;
+}
+
+/*
+ * Lookup JUL app by socket in the global hash table.
+ *
+ * RCU read side lock MUST be acquired.
+ *
+ * Return object if found else NULL.
+ */
+struct jul_app *jul_find_app_by_sock(int sock)
+{
+ struct lttng_ht_node_ulong *node;
+ struct lttng_ht_iter iter;
+ struct jul_app *app;
+
+ assert(sock >= 0);
+
+ lttng_ht_lookup(jul_apps_ht_by_sock, (void *)((unsigned long) sock), &iter);
+ node = lttng_ht_iter_get_node_ulong(&iter);
+ if (node == NULL) {
+ goto error;
+ }
+ app = caa_container_of(node, struct jul_app, node);
+
+ DBG3("JUL app pid %d found by sock %d.", app->pid, sock);
+ return app;
+
+error:
+ DBG3("JUL app NOT found by sock %d.", sock);
+ return NULL;
+}
+
+/*
+ * Add JUL application object to a given hash table.
+ */
+void jul_add_app(struct jul_app *app)
+{
+ assert(app);
+
+ DBG3("JUL adding app sock: %d and pid: %d to ht", app->sock->fd, app->pid);
+
+ rcu_read_lock();
+ lttng_ht_add_unique_ulong(jul_apps_ht_by_sock, &app->node);
+ rcu_read_unlock();
+}
+
+/*
+ * Delete JUL application from the global hash table.
+ */
+void jul_delete_app(struct jul_app *app)
+{
+ int ret;
+ struct lttng_ht_iter iter;
+
+ assert(app);
+
+ DBG3("JUL deleting app pid: %d and sock: %d", app->pid, app->sock->fd);
+
+ iter.iter.node = &app->node.node;
+ rcu_read_lock();
+ ret = lttng_ht_del(jul_apps_ht_by_sock, &iter);
+ rcu_read_unlock();
+ assert(!ret);
+}
+
+/*
+ * Destroy a JUL application object by detaching it from its corresponding UST
+ * app if one is connected by closing the socket. Finally, perform a
+ * delayed memory reclaim.
+ */
+void jul_destroy_app(struct jul_app *app)
+{
+ assert(app);
+
+ if (app->sock) {
+ app->sock->ops->close(app->sock);
+ lttcomm_destroy_sock(app->sock);
+ }
+
+ call_rcu(&app->node.head, destroy_app_jul_rcu);
+}
+
/*
* Initialize an already allocated JUL domain object.
*
*
* Return a new object else NULL on error.
*/
-struct jul_event *jul_create_event(const char *name)
+struct jul_event *jul_create_event(const char *name,
+ struct lttng_filter_bytecode *filter)
{
struct jul_event *event;
if (name) {
strncpy(event->name, name, sizeof(event->name));
event->name[sizeof(event->name) - 1] = '\0';
+ lttng_ht_node_init_str(&event->node, event->name);
+ }
+
+ if (filter) {
+ event->filter = filter;
}
error:
DBG3("JUL adding event %s to domain", event->name);
- lttng_ht_add_unique_str(dom->events, &event->node);
+ rcu_read_lock();
+ add_unique_jul_event(dom->events, event);
+ rcu_read_unlock();
+ dom->being_used = 1;
}
/*
- * Find a JUL event in the given domain using name.
+ * Find a JUL event in the given domain using name and loglevel.
*
* RCU read side lock MUST be acquired.
*
* Return object if found else NULL.
*/
-struct jul_event *jul_find_by_name(const char *name, struct jul_domain *dom)
+struct jul_event *jul_find_event_by_name(const char *name,
+ struct jul_domain *dom)
{
struct lttng_ht_node_str *node;
struct lttng_ht_iter iter;
+ struct lttng_ht *ht;
+ struct jul_ht_key key;
assert(name);
assert(dom);
assert(dom->events);
- lttng_ht_lookup(dom->events, (void *)name, &iter);
+ ht = dom->events;
+ key.name = name;
+
+ cds_lfht_lookup(ht->ht, ht->hash_fct((void *) name, lttng_ht_seed),
+ ht_match_event_by_name, &key, &iter.iter);
node = lttng_ht_iter_get_node_str(&iter);
if (node == NULL) {
goto error;
}
- DBG3("JUL found by name %s in domain.", name);
+ DBG3("JUL event found %s by name.", name);
return caa_container_of(node, struct jul_event, node);
error:
- DBG3("JUL NOT found by name %s in domain.", name);
+ DBG3("JUL NOT found by name %s.", name);
return NULL;
}
/*
- * Delete JUL event from given domain. Events hash table MUST be initialized.
+ * Find a JUL event in the given domain using name and loglevel.
+ *
+ * RCU read side lock MUST be acquired.
+ *
+ * Return object if found else NULL.
*/
-void jul_delete_event(struct jul_event *event, struct jul_domain *dom)
+struct jul_event *jul_find_event(const char *name,
+ enum lttng_loglevel_jul loglevel, struct jul_domain *dom)
{
- int ret;
+ struct lttng_ht_node_str *node;
struct lttng_ht_iter iter;
+ struct lttng_ht *ht;
+ struct jul_ht_key key;
- assert(event);
+ assert(name);
assert(dom);
assert(dom->events);
- DBG3("JUL deleting event %s from domain", event->name);
+ ht = dom->events;
+ key.name = name;
+ key.loglevel = loglevel;
- iter.iter.node = &event->node.node;
- rcu_read_lock();
- ret = lttng_ht_del(dom->events, &iter);
- rcu_read_unlock();
- assert(!ret);
+ cds_lfht_lookup(ht->ht, ht->hash_fct((void *) name, lttng_ht_seed),
+ ht_match_event, &key, &iter.iter);
+ node = lttng_ht_iter_get_node_str(&iter);
+ if (node == NULL) {
+ goto error;
+ }
+
+ DBG3("JUL event found %s.", name);
+ return caa_container_of(node, struct jul_event, node);
+
+error:
+ DBG3("JUL NOT found %s.", name);
+ return NULL;
}
/*
- * Free given JUl event. After this call, the pointer is not usable anymore.
+ * Free given JUL event. This event must not be globally visible at this
+ * point (only expected to be used on failure just after event
+ * creation). After this call, the pointer is not usable anymore.
*/
void jul_destroy_event(struct jul_event *event)
{
/*
* Destroy a JUL domain completely. Note that the given pointer is NOT freed
- * thus a reference can be passed to this function.
+ * thus a reference to static or stack data can be passed to this function.
*/
void jul_destroy_domain(struct jul_domain *dom)
{
rcu_read_lock();
cds_lfht_for_each_entry(dom->events->ht, &iter.iter, node, node) {
int ret;
+ struct jul_event *event;
+
+ /*
+ * When destroying an event, we have to try to disable it on the agent
+ * side so the event stops generating data. The return value is not
+ * important since we have to continue anyway destroying the object.
+ */
+ event = caa_container_of(node, struct jul_event, node);
+ (void) jul_disable_event(event);
ret = lttng_ht_del(dom->events, &iter);
assert(!ret);
}
rcu_read_unlock();
- ht_cleanup_push(dom->events);
+ lttng_ht_destroy(dom->events);
+}
+
+/*
+ * Initialize JUL subsystem.
+ */
+int jul_init(void)
+{
+ jul_apps_ht_by_sock = lttng_ht_new(0, LTTNG_HT_TYPE_ULONG);
+ if (!jul_apps_ht_by_sock) {
+ return -1;
+ }
+
+ return 0;
+}
+
+/*
+ * Update a JUL application (given socket) using the given domain.
+ *
+ * Note that this function is most likely to be used with a tracing session
+ * thus the caller should make sure to hold the appropriate lock(s).
+ */
+void jul_update(struct jul_domain *domain, int sock)
+{
+ int ret;
+ struct jul_app *app;
+ struct jul_event *event;
+ struct lttng_ht_iter iter;
+
+ assert(domain);
+ assert(sock >= 0);
+
+ DBG("JUL updating app socket %d", sock);
+
+ rcu_read_lock();
+ cds_lfht_for_each_entry(domain->events->ht, &iter.iter, event, node.node) {
+ /* Skip event if disabled. */
+ if (!event->enabled) {
+ continue;
+ }
+
+ app = jul_find_app_by_sock(sock);
+ /*
+ * We are in the registration path thus if the application is gone,
+ * there is a serious code flow error.
+ */
+ assert(app);
+
+ ret = enable_event(app, event);
+ if (ret != LTTNG_OK) {
+ DBG2("JUL update unable to enable event %s on app pid: %d sock %d",
+ event->name, app->pid, app->sock->fd);
+ /* Let's try the others here and don't assume the app is dead. */
+ continue;
+ }
+ }
+ rcu_read_unlock();
}
projects / lttng-tools.git / blobdiff