#include "trace-kernel.h"
#include "trace-ust.h"
+/*
+ * Add unique UST event based on the event name, filter bytecode and loglevel.
+ */
static void add_unique_ust_event(struct lttng_ht *ht,
struct ltt_ust_event *event)
{
*/
static void init_syscalls_kernel_event(struct lttng_event *event)
{
+ assert(event);
+
event->name[0] = '\0';
/*
* We use LTTNG_EVENT* here since the trace kernel creation will make the
event->type = LTTNG_EVENT_SYSCALL;
}
-/*
- * Return 1 if loglevels match or 0 on failure.
- */
-static int loglevel_match(struct ltt_ust_event *uevent,
- enum lttng_ust_loglevel_type log_type, int loglevel)
-{
- /*
- * For the loglevel type ALL, the loglevel is set to -1 but the event
- * received by the session daemon is 0 which does not match the negative
- * value in the existing event.
- */
- if (log_type == LTTNG_UST_LOGLEVEL_ALL) {
- loglevel = -1;
- }
-
- if (uevent == NULL || uevent->attr.loglevel_type != log_type ||
- uevent->attr.loglevel != loglevel) {
- goto no_match;
- }
-
- return 1;
-
-no_match:
- return 0;
-}
-
/*
* Disable kernel tracepoint event for a channel from the kernel session.
*/
-int event_kernel_disable_tracepoint(struct ltt_kernel_session *ksession,
- struct ltt_kernel_channel *kchan, char *event_name)
+int event_kernel_disable_tracepoint(struct ltt_kernel_channel *kchan,
+ char *event_name)
{
int ret;
struct ltt_kernel_event *kevent;
+ assert(kchan);
+
kevent = trace_kernel_get_event_by_name(event_name, kchan);
if (kevent == NULL) {
ret = LTTNG_ERR_NO_EVENT;
/*
* Disable kernel tracepoint events for a channel from the kernel session.
*/
-int event_kernel_disable_all_tracepoints(struct ltt_kernel_session *ksession,
- struct ltt_kernel_channel *kchan)
+int event_kernel_disable_all_tracepoints(struct ltt_kernel_channel *kchan)
{
int ret;
struct ltt_kernel_event *kevent;
+ assert(kchan);
+
/* For each event in the kernel session */
cds_list_for_each_entry(kevent, &kchan->events_list.head, list) {
ret = kernel_disable_event(kevent);
/*
* Disable kernel syscall events for a channel from the kernel session.
*/
-int event_kernel_disable_all_syscalls(struct ltt_kernel_session *ksession,
- struct ltt_kernel_channel *kchan)
+int event_kernel_disable_all_syscalls(struct ltt_kernel_channel *kchan)
{
ERR("Cannot disable syscall tracing for existing session. Please destroy session instead.");
return LTTNG_OK; /* Return OK so disable all succeeds */
/*
* Disable all kernel event for a channel from the kernel session.
*/
-int event_kernel_disable_all(struct ltt_kernel_session *ksession,
- struct ltt_kernel_channel *kchan)
+int event_kernel_disable_all(struct ltt_kernel_channel *kchan)
{
int ret;
- ret = event_kernel_disable_all_tracepoints(ksession, kchan);
+ assert(kchan);
+
+ ret = event_kernel_disable_all_tracepoints(kchan);
if (ret != LTTNG_OK)
return ret;
- ret = event_kernel_disable_all_syscalls(ksession, kchan);
+ ret = event_kernel_disable_all_syscalls(kchan);
return ret;
}
/*
* Enable kernel tracepoint event for a channel from the kernel session.
*/
-int event_kernel_enable_tracepoint(struct ltt_kernel_session *ksession,
- struct ltt_kernel_channel *kchan, struct lttng_event *event)
+int event_kernel_enable_tracepoint(struct ltt_kernel_channel *kchan,
+ struct lttng_event *event)
{
int ret;
struct ltt_kernel_event *kevent;
+ assert(kchan);
+ assert(event);
+
kevent = trace_kernel_get_event_by_name(event->name, kchan);
if (kevent == NULL) {
ret = kernel_create_event(event, kchan);
/*
* Enable all kernel tracepoint events of a channel of the kernel session.
*/
-int event_kernel_enable_all_tracepoints(struct ltt_kernel_session *ksession,
- struct ltt_kernel_channel *kchan, int kernel_tracer_fd)
+int event_kernel_enable_all_tracepoints(struct ltt_kernel_channel *kchan,
+ int kernel_tracer_fd)
{
int size, i, ret;
struct ltt_kernel_event *kevent;
struct lttng_event *event_list = NULL;
+ assert(kchan);
+
/* For each event in the kernel session */
cds_list_for_each_entry(kevent, &kchan->events_list.head, list) {
if (kevent->enabled == 0) {
ret = LTTNG_OK;
end:
return ret;
-
}
/*
- * Enable all kernel tracepoint events of a channel of the kernel session.
+ * Enable all kernel sycalls events of a channel of the kernel session.
*/
-int event_kernel_enable_all_syscalls(struct ltt_kernel_session *ksession,
- struct ltt_kernel_channel *kchan, int kernel_tracer_fd)
+int event_kernel_enable_all_syscalls(struct ltt_kernel_channel *kchan,
+ int kernel_tracer_fd)
{
int ret;
struct lttng_event event;
+ assert(kchan);
+
init_syscalls_kernel_event(&event);
DBG("Enabling all syscall tracing");
/*
* Enable all kernel events of a channel of the kernel session.
*/
-int event_kernel_enable_all(struct ltt_kernel_session *ksession,
- struct ltt_kernel_channel *kchan, int kernel_tracer_fd)
+int event_kernel_enable_all(struct ltt_kernel_channel *kchan,
+ int kernel_tracer_fd)
{
int tp_ret;
- tp_ret = event_kernel_enable_all_tracepoints(ksession, kchan, kernel_tracer_fd);
+ assert(kchan);
+
+ tp_ret = event_kernel_enable_all_tracepoints(kchan, kernel_tracer_fd);
if (tp_ret != LTTNG_OK) {
goto end;
}
* tracepoints did not fail. Future work will allow us to send back
* multiple errors to the client in one API call.
*/
- (void) event_kernel_enable_all_syscalls(ksession, kchan, kernel_tracer_fd);
+ (void) event_kernel_enable_all_syscalls(kchan, kernel_tracer_fd);
end:
return tp_ret;
/*
* Enable all UST tracepoints for a channel from a UST session.
*/
-int event_ust_enable_all_tracepoints(struct ltt_ust_session *usess, int domain,
- struct ltt_ust_channel *uchan)
+int event_ust_enable_all_tracepoints(struct ltt_ust_session *usess,
+ struct ltt_ust_channel *uchan, struct lttng_filter_bytecode *filter)
{
int ret, i, size;
struct lttng_ht_iter iter;
struct ltt_ust_event *uevent = NULL;
struct lttng_event *events = NULL;
- switch (domain) {
- case LTTNG_DOMAIN_UST:
- {
- /* Enable existing events */
- cds_lfht_for_each_entry(uchan->events->ht, &iter.iter, uevent,
- node.node) {
- if (uevent->enabled == 0) {
- ret = ust_app_enable_event_glb(usess, uchan, uevent);
- if (ret < 0) {
- continue;
- }
- uevent->enabled = 1;
- }
- }
+ assert(usess);
+ assert(uchan);
- /* Get all UST available events */
- size = ust_app_list_events(&events);
- if (size < 0) {
- ret = LTTNG_ERR_UST_LIST_FAIL;
- goto error;
- }
+ rcu_read_lock();
- for (i = 0; i < size; i++) {
- /*
- * Check if event exist and if so, continue since it was enable
- * previously.
- */
- uevent = trace_ust_find_event(uchan->events, events[i].name, NULL,
- events[i].loglevel);
- if (uevent != NULL) {
- ret = ust_app_enable_event_pid(usess, uchan, uevent,
- events[i].pid);
- if (ret < 0) {
- if (ret != -LTTNG_UST_ERR_EXIST) {
- ret = LTTNG_ERR_UST_ENABLE_FAIL;
- goto error;
- }
- }
+ /* Enable existing events */
+ cds_lfht_for_each_entry(uchan->events->ht, &iter.iter, uevent,
+ node.node) {
+ if (uevent->enabled == 0) {
+ ret = ust_app_enable_event_glb(usess, uchan, uevent);
+ if (ret < 0) {
continue;
}
+ uevent->enabled = 1;
+ }
+ }
- /* Create ust event */
- uevent = trace_ust_create_event(&events[i]);
- if (uevent == NULL) {
- ret = LTTNG_ERR_FATAL;
- goto error_destroy;
- }
+ /* Get all UST available events */
+ size = ust_app_list_events(&events);
+ if (size < 0) {
+ ret = LTTNG_ERR_UST_LIST_FAIL;
+ goto error;
+ }
- /* Create event for the specific PID */
+ for (i = 0; i < size; i++) {
+ /*
+ * Check if event exist and if so, continue since it was enable
+ * previously.
+ */
+ uevent = trace_ust_find_event(uchan->events, events[i].name, filter,
+ events[i].loglevel);
+ if (uevent != NULL) {
ret = ust_app_enable_event_pid(usess, uchan, uevent,
events[i].pid);
if (ret < 0) {
- if (ret == -LTTNG_UST_ERR_EXIST) {
- ret = LTTNG_ERR_UST_EVENT_EXIST;
- goto error;
- } else {
+ if (ret != -LTTNG_UST_ERR_EXIST) {
ret = LTTNG_ERR_UST_ENABLE_FAIL;
- goto error_destroy;
+ goto error;
}
}
+ continue;
+ }
- uevent->enabled = 1;
- /* Add ltt ust event to channel */
- rcu_read_lock();
- add_unique_ust_event(uchan->events, uevent);
- rcu_read_unlock();
+ /* Create ust event */
+ uevent = trace_ust_create_event(&events[i], filter, NULL);
+ if (uevent == NULL) {
+ ret = LTTNG_ERR_FATAL;
+ goto error_destroy;
}
- free(events);
- break;
- }
-#if 0
- case LTTNG_DOMAIN_UST_EXEC_NAME:
- case LTTNG_DOMAIN_UST_PID:
- case LTTNG_DOMAIN_UST_PID_FOLLOW_CHILDREN:
-#endif
- default:
- ret = LTTNG_ERR_UND;
- goto error;
+ /* Create event for the specific PID */
+ ret = ust_app_enable_event_pid(usess, uchan, uevent,
+ events[i].pid);
+ if (ret < 0) {
+ if (ret == -LTTNG_UST_ERR_EXIST) {
+ ret = LTTNG_ERR_UST_EVENT_EXIST;
+ goto error;
+ } else {
+ ret = LTTNG_ERR_UST_ENABLE_FAIL;
+ goto error_destroy;
+ }
+ }
+
+ uevent->enabled = 1;
+ /* Add ltt ust event to channel */
+ rcu_read_lock();
+ add_unique_ust_event(uchan->events, uevent);
+ rcu_read_unlock();
}
+ free(events);
+ rcu_read_unlock();
return LTTNG_OK;
error_destroy:
error:
free(events);
+ rcu_read_unlock();
return ret;
}
/*
* Enable UST tracepoint event for a channel from a UST session.
*/
-int event_ust_enable_tracepoint(struct ltt_ust_session *usess, int domain,
- struct ltt_ust_channel *uchan, struct lttng_event *event)
+int event_ust_enable_tracepoint(struct ltt_ust_session *usess,
+ struct ltt_ust_channel *uchan, struct lttng_event *event,
+ struct lttng_filter_bytecode *filter,
+ struct lttng_event_exclusion *exclusion)
{
int ret = LTTNG_OK, to_create = 0;
struct ltt_ust_event *uevent;
- DBG3("Enable ust: %s l:%d f:%p", event->name, event->loglevel, NULL);
+ assert(usess);
+ assert(uchan);
+ assert(event);
rcu_read_lock();
- uevent = trace_ust_find_event(uchan->events, event->name, NULL,
+ uevent = trace_ust_find_event(uchan->events, event->name, filter,
event->loglevel);
if (uevent == NULL) {
- uevent = trace_ust_create_event(event);
+ uevent = trace_ust_create_event(event, filter, exclusion);
if (uevent == NULL) {
ret = LTTNG_ERR_UST_ENABLE_FAIL;
goto error;
}
+
/* Valid to set it after the goto error since uevent is still NULL */
to_create = 1;
}
- /* Check loglevels */
- ret = loglevel_match(uevent, event->loglevel_type, event->loglevel);
- if (ret == 0) {
- /*
- * No match meaning that the user tried to enable a known event but
- * with a different loglevel.
- */
- DBG("Enable event %s does not match existing event %s with loglevel "
- "respectively of %d and %d", event->name, uevent->attr.name,
- uevent->attr.loglevel, event->loglevel);
- ret = LTTNG_ERR_EVENT_EXIST_LOGLEVEL;
- goto error;
- }
-
if (uevent->enabled) {
/* It's already enabled so everything is OK */
- ret = LTTNG_OK;
+ ret = LTTNG_ERR_UST_EVENT_ENABLED;
goto end;
}
uevent->enabled = 1;
- switch (domain) {
- case LTTNG_DOMAIN_UST:
- {
- if (to_create) {
- /* Create event on all UST registered apps for session */
- ret = ust_app_create_event_glb(usess, uchan, uevent);
- } else {
- /* Enable event on all UST registered apps for session */
- ret = ust_app_enable_event_glb(usess, uchan, uevent);
- }
+ if (to_create) {
+ /* Create event on all UST registered apps for session */
+ ret = ust_app_create_event_glb(usess, uchan, uevent);
+ } else {
+ /* Enable event on all UST registered apps for session */
+ ret = ust_app_enable_event_glb(usess, uchan, uevent);
+ }
- if (ret < 0) {
- if (ret == -LTTNG_UST_ERR_EXIST) {
- ret = LTTNG_ERR_UST_EVENT_EXIST;
- goto end;
- } else {
- ret = LTTNG_ERR_UST_ENABLE_FAIL;
- goto error;
- }
+ if (ret < 0) {
+ if (ret == -LTTNG_UST_ERR_EXIST) {
+ ret = LTTNG_ERR_UST_EVENT_EXIST;
+ goto end;
+ } else {
+ ret = LTTNG_ERR_UST_ENABLE_FAIL;
+ goto error;
}
- break;
- }
-#if 0
- case LTTNG_DOMAIN_UST_EXEC_NAME:
- case LTTNG_DOMAIN_UST_PID:
- case LTTNG_DOMAIN_UST_PID_FOLLOW_CHILDREN:
-#endif
- default:
- ret = LTTNG_ERR_UND;
- goto end;
}
if (to_create) {
/*
* Disable UST tracepoint of a channel from a UST session.
*/
-int event_ust_disable_tracepoint(struct ltt_ust_session *usess, int domain,
+int event_ust_disable_tracepoint(struct ltt_ust_session *usess,
struct ltt_ust_channel *uchan, char *event_name)
{
int ret;
struct ltt_ust_event *uevent;
struct lttng_ht_node_str *node;
struct lttng_ht_iter iter;
- void *orig_match_fct;
struct lttng_ht *ht;
- ht = uchan->events;
+ assert(usess);
+ assert(uchan);
+ assert(event_name);
- /* Save match function so we can use the event by name match. */
- orig_match_fct = (void *) ht->match_fct;
- ht->match_fct = trace_ust_ht_match_event_by_name;
+ ht = uchan->events;
rcu_read_lock();
- lttng_ht_lookup(ht, (void *) event_name, &iter);
+
+ /*
+ * We use a custom lookup since we need the iterator for the next_duplicate
+ * call in the do while loop below.
+ */
+ cds_lfht_lookup(ht->ht, ht->hash_fct((void *) event_name, lttng_ht_seed),
+ trace_ust_ht_match_event_by_name, event_name, &iter.iter);
node = lttng_ht_iter_get_node_str(&iter);
if (node == NULL) {
DBG2("Trace UST event NOT found by name %s", event_name);
do {
uevent = caa_container_of(node, struct ltt_ust_event, node);
+ assert(uevent);
+
if (uevent->enabled == 0) {
/* It's already disabled so everything is OK */
- ret = LTTNG_OK;
- continue;
+ goto next;
}
- switch (domain) {
- case LTTNG_DOMAIN_UST:
- ret = ust_app_disable_event_glb(usess, uchan, uevent);
- if (ret < 0 && ret != -LTTNG_UST_ERR_EXIST) {
- ret = LTTNG_ERR_UST_DISABLE_FAIL;
- goto error;
- }
- break;
-#if 0
- case LTTNG_DOMAIN_UST_EXEC_NAME:
- case LTTNG_DOMAIN_UST_PID:
- case LTTNG_DOMAIN_UST_PID_FOLLOW_CHILDREN:
-#endif
- default:
- ret = LTTNG_ERR_UND;
+ ret = ust_app_disable_event_glb(usess, uchan, uevent);
+ if (ret < 0 && ret != -LTTNG_UST_ERR_EXIST) {
+ ret = LTTNG_ERR_UST_DISABLE_FAIL;
goto error;
}
-
uevent->enabled = 0;
+ DBG2("Event UST %s disabled in channel %s", uevent->attr.name,
+ uchan->name);
+
+next:
/* Get next duplicate event by name. */
cds_lfht_next_duplicate(ht->ht, trace_ust_ht_match_event_by_name,
event_name, &iter.iter);
ret = LTTNG_OK;
- DBG2("Event UST %s disabled in channel %s", uevent->attr.name,
- uchan->name);
error:
- ht->match_fct = orig_match_fct;
rcu_read_unlock();
return ret;
}
/*
* Disable all UST tracepoints for a channel from a UST session.
*/
-int event_ust_disable_all_tracepoints(struct ltt_ust_session *usess, int domain,
+int event_ust_disable_all_tracepoints(struct ltt_ust_session *usess,
struct ltt_ust_channel *uchan)
{
int ret, i, size;
struct ltt_ust_event *uevent = NULL;
struct lttng_event *events = NULL;
- switch (domain) {
- case LTTNG_DOMAIN_UST:
- {
- /* Disabling existing events */
- cds_lfht_for_each_entry(uchan->events->ht, &iter.iter, uevent,
- node.node) {
- if (uevent->enabled == 1) {
- ret = ust_app_disable_event_glb(usess, uchan, uevent);
- if (ret < 0) {
- continue;
- }
- uevent->enabled = 0;
+ assert(usess);
+ assert(uchan);
+
+ rcu_read_lock();
+
+ /* Disabling existing events */
+ cds_lfht_for_each_entry(uchan->events->ht, &iter.iter, uevent,
+ node.node) {
+ if (uevent->enabled == 1) {
+ ret = event_ust_disable_tracepoint(usess, uchan,
+ uevent->attr.name);
+ if (ret < 0) {
+ continue;
}
}
+ }
- /* Get all UST available events */
- size = ust_app_list_events(&events);
- if (size < 0) {
- ret = LTTNG_ERR_UST_LIST_FAIL;
- goto error;
+ /* Get all UST available events */
+ size = ust_app_list_events(&events);
+ if (size < 0) {
+ ret = LTTNG_ERR_UST_LIST_FAIL;
+ goto error;
+ }
+
+ for (i = 0; i < size; i++) {
+ ret = event_ust_disable_tracepoint(usess, uchan,
+ events[i].name);
+ if (ret != LTTNG_OK) {
+ /* Continue to disable the rest... */
+ continue;
}
+ }
+ free(events);
- for (i = 0; i < size; i++) {
- ret = event_ust_disable_tracepoint(usess, domain, uchan,
- events[i].name);
- if (ret != LTTNG_OK) {
- /* Continue to disable the rest... */
- continue;
- }
+ rcu_read_unlock();
+ return LTTNG_OK;
+
+error:
+ free(events);
+ rcu_read_unlock();
+ return ret;
+}
+
+/*
+ * Enable all JUL event for a given UST session.
+ *
+ * Return LTTNG_OK on success or else a LTTNG_ERR* code.
+ */
+int event_jul_enable_all(struct ltt_ust_session *usess)
+{
+ int ret;
+ struct jul_event *jevent;
+ struct lttng_event event;
+ struct lttng_ht_iter iter;
+
+ assert(usess);
+
+ DBG("Event JUL enabling ALL events for session %" PRIu64, usess->id);
+
+ /* Create the * wildcard event name for the Java agent. */
+ memset(event.name, 0, sizeof(event.name));
+ strncpy(event.name, "*", sizeof(event.name));
+ event.name[sizeof(event.name) - 1] = '\0';
+
+ /* Enable event on JUL application through TCP socket. */
+ ret = event_jul_enable(usess, &event);
+ if (ret != LTTNG_OK) {
+ goto error;
+ }
+
+ /* Flag every event that they are now enabled. */
+ rcu_read_lock();
+ cds_lfht_for_each_entry(usess->domain_jul.events->ht, &iter.iter, jevent,
+ node.node) {
+ jevent->enabled = 1;
+ }
+ rcu_read_unlock();
+
+ ret = LTTNG_OK;
+
+error:
+ return ret;
+}
+
+/*
+ * Enable a single JUL event for a given UST session.
+ *
+ * Return LTTNG_OK on success or else a LTTNG_ERR* code.
+ */
+int event_jul_enable(struct ltt_ust_session *usess, struct lttng_event *event)
+{
+ int ret, created = 0;
+ struct jul_event *jevent;
+
+ assert(usess);
+ assert(event);
+
+ DBG("Event JUL enabling %s for session %" PRIu64, event->name, usess->id);
+
+ jevent = jul_find_by_name(event->name, &usess->domain_jul);
+ if (!jevent) {
+ jevent = jul_create_event(event->name);
+ if (!jevent) {
+ ret = LTTNG_ERR_NOMEM;
+ goto error;
}
+ created = 1;
+ }
- free(events);
- break;
+ /* Already enabled? */
+ if (jevent->enabled) {
+ goto end;
}
-#if 0
- case LTTNG_DOMAIN_UST_EXEC_NAME:
- case LTTNG_DOMAIN_UST_PID:
- case LTTNG_DOMAIN_UST_PID_FOLLOW_CHILDREN:
-#endif
- default:
- ret = LTTNG_ERR_UND;
+
+ ret = jul_enable_event(jevent);
+ if (ret != LTTNG_OK) {
goto error;
}
+ /* If the event was created prior to the enable, add it to the domain. */
+ if (created) {
+ jul_add_event(jevent, &usess->domain_jul);
+ }
+
+end:
return LTTNG_OK;
error:
- free(events);
+ if (created) {
+ jul_destroy_event(jevent);
+ }
+ return ret;
+}
+
+/*
+ * Disable a single JUL event for a given UST session.
+ *
+ * Return LTTNG_OK on success or else a LTTNG_ERR* code.
+ */
+int event_jul_disable(struct ltt_ust_session *usess, char *event_name)
+{
+ int ret;
+ struct jul_event *jevent;
+
+ assert(usess);
+ assert(event_name);
+
+ DBG("Event JUL disabling %s for session %" PRIu64, event_name, usess->id);
+
+ jevent = jul_find_by_name(event_name, &usess->domain_jul);
+ if (!jevent) {
+ ret = LTTNG_ERR_UST_EVENT_NOT_FOUND;
+ goto error;
+ }
+
+ /* Already disabled? */
+ if (!jevent->enabled) {
+ goto end;
+ }
+
+ ret = jul_disable_event(jevent);
+ if (ret != LTTNG_OK) {
+ goto error;
+ }
+
+end:
+ return LTTNG_OK;
+
+error:
+ return ret;
+}
+/*
+ * Disable all JUL event for a given UST session.
+ *
+ * Return LTTNG_OK on success or else a LTTNG_ERR* code.
+ */
+int event_jul_disable_all(struct ltt_ust_session *usess)
+{
+ int ret, do_disable = 0;
+ struct jul_event *jevent;
+ struct lttng_ht_iter iter;
+
+ assert(usess);
+
+ /* Enable event on JUL application through TCP socket. */
+ ret = event_jul_disable(usess, "*");
+ if (ret != LTTNG_OK) {
+ if (ret == LTTNG_ERR_UST_EVENT_NOT_FOUND) {
+ /*
+ * This means that no enable all was done before but still a user
+ * could want to disable everything even though the * wild card
+ * event does not exists.
+ */
+ do_disable = 1;
+ } else {
+ goto error;
+ }
+ }
+
+ /* Flag every event that they are now enabled. */
+ rcu_read_lock();
+ cds_lfht_for_each_entry(usess->domain_jul.events->ht, &iter.iter, jevent,
+ node.node) {
+ if (jevent->enabled && do_disable) {
+ ret = event_jul_disable(usess, jevent->name);
+ if (ret != LTTNG_OK) {
+ rcu_read_unlock();
+ goto error;
+ }
+ }
+ jevent->enabled = 0;
+ }
+ rcu_read_unlock();
+
+ ret = LTTNG_OK;
+
+error:
return ret;
}
projects / lttng-tools.git / blobdiff