static const struct lttng_ust_objd_ops lttng_session_ops;
static const struct lttng_ust_objd_ops lttng_channel_ops;
static const struct lttng_ust_objd_ops lttng_metadata_ops;
-static const struct lttng_ust_objd_ops lttng_event_ops;
-static const struct lttng_ust_objd_ops lttng_wildcard_ops;
+static const struct lttng_ust_objd_ops lttng_enabler_ops;
static const struct lttng_ust_objd_ops lib_ring_buffer_objd_ops;
static const struct lttng_ust_objd_ops lttng_tracepoint_list_ops;
static const struct lttng_ust_objd_ops lttng_tracepoint_field_list_ops;
struct lttng_ust_context *context_param,
struct lttng_ctx **ctx, struct lttng_session *session)
{
- if (session->been_active)
- return -EPERM;
-
- switch (context_param->ctx) {
- case LTTNG_UST_CONTEXT_PTHREAD_ID:
- return lttng_add_pthread_id_to_ctx(ctx);
- case LTTNG_UST_CONTEXT_VTID:
- return lttng_add_vtid_to_ctx(ctx);
- case LTTNG_UST_CONTEXT_VPID:
- return lttng_add_vpid_to_ctx(ctx);
- case LTTNG_UST_CONTEXT_PROCNAME:
- return lttng_add_procname_to_ctx(ctx);
- default:
- return -EINVAL;
- }
+ return lttng_attach_context(context_param, ctx, session);
}
/**
static
void lttng_metadata_create_events(int channel_objd)
{
- struct lttng_channel *channel = objd_private(channel_objd);
+ struct lttng_channel *chan = objd_private(channel_objd);
+ struct lttng_enabler *enabler;
static struct lttng_ust_event metadata_params = {
.instrumentation = LTTNG_UST_TRACEPOINT,
.name = "lttng_ust:metadata",
.loglevel_type = LTTNG_UST_LOGLEVEL_ALL,
.loglevel = TRACE_DEFAULT,
};
- struct lttng_event *event;
- int ret;
/*
* We tolerate no failure path after event creation. It will stay
* invariant for the rest of the session.
*/
- ret = lttng_event_create(channel, &metadata_params, &event);
- if (ret < 0) {
+ enabler = lttng_enabler_create(LTTNG_ENABLER_EVENT,
+ &metadata_params, chan);
+ if (!enabler) {
goto create_error;
}
return;
}
static
-int lttng_abi_create_event(int channel_objd,
+int lttng_abi_create_enabler(int channel_objd,
struct lttng_ust_event *event_param,
- void *owner)
+ void *owner,
+ enum lttng_enabler_type type)
{
struct lttng_channel *channel = objd_private(channel_objd);
- struct lttng_event *event;
+ struct lttng_enabler *enabler;
int event_objd, ret;
event_param->name[LTTNG_UST_SYM_NAME_LEN - 1] = '\0';
- event_objd = objd_alloc(NULL, <tng_event_ops, owner);
+ event_objd = objd_alloc(NULL, <tng_enabler_ops, owner);
if (event_objd < 0) {
ret = event_objd;
goto objd_error;
* We tolerate no failure path after event creation. It will stay
* invariant for the rest of the session.
*/
- ret = lttng_event_create(channel, event_param, &event);
- if (ret < 0) {
+ enabler = lttng_enabler_create(type, event_param, channel);
+ if (!enabler) {
+ ret = -ENOMEM;
goto event_error;
}
- objd_set_private(event_objd, event);
+ objd_set_private(event_objd, enabler);
/* The event holds a reference on the channel */
objd_ref(channel_objd);
return event_objd;
return ret;
}
-static
-int lttng_abi_create_wildcard(int channel_objd,
- struct lttng_ust_event *event_param,
- void *owner)
-{
- struct lttng_channel *channel = objd_private(channel_objd);
- struct session_wildcard *wildcard;
- int wildcard_objd, ret;
-
- event_param->name[LTTNG_UST_SYM_NAME_LEN - 1] = '\0';
- wildcard_objd = objd_alloc(NULL, <tng_wildcard_ops, owner);
- if (wildcard_objd < 0) {
- ret = wildcard_objd;
- goto objd_error;
- }
- /*
- * We tolerate no failure path after wildcard creation. It will
- * stay invariant for the rest of the session.
- */
- ret = lttng_wildcard_create(channel, event_param, &wildcard);
- if (ret < 0) {
- goto wildcard_error;
- }
- objd_set_private(wildcard_objd, wildcard);
- /* The wildcard holds a reference on the channel */
- objd_ref(channel_objd);
- return wildcard_objd;
-
-wildcard_error:
- {
- int err;
-
- err = lttng_ust_objd_unref(wildcard_objd);
- assert(!err);
- }
-objd_error:
- return ret;
-}
-
/**
* lttng_channel_cmd - lttng control through object descriptors
*
(struct lttng_ust_event *) arg;
if (event_param->name[strlen(event_param->name) - 1] == '*') {
/* If ends with wildcard, create wildcard. */
- return lttng_abi_create_wildcard(objd, event_param,
- owner);
+ return lttng_abi_create_enabler(objd, event_param,
+ owner, LTTNG_ENABLER_WILDCARD);
} else {
- return lttng_abi_create_event(objd, event_param,
- owner);
+ return lttng_abi_create_enabler(objd, event_param,
+ owner, LTTNG_ENABLER_EVENT);
}
}
case LTTNG_UST_CONTEXT:
}
}
-#if 0
-/**
- * lttng_channel_poll - lttng stream addition/removal monitoring
- *
- * @file: the file
- * @wait: poll table
- */
-unsigned int lttng_channel_poll(struct file *file, poll_table *wait)
-{
- struct lttng_channel *channel = file->private_data;
- unsigned int mask = 0;
-
- if (file->f_mode & FMODE_READ) {
- poll_wait_set_exclusive(wait);
- poll_wait(file, channel->ops->get_hp_wait_queue(channel->chan),
- wait);
-
- if (channel->ops->is_disabled(channel->chan))
- return POLLERR;
- if (channel->ops->is_finalized(channel->chan))
- return POLLHUP;
- if (channel->ops->buffer_has_read_closed_stream(channel->chan))
- return POLLIN | POLLRDNORM;
- return 0;
- }
- return mask;
-
-}
-#endif //0
-
static
int lttng_channel_release(int objd)
{
static const struct lttng_ust_objd_ops lttng_channel_ops = {
.release = lttng_channel_release,
- //.poll = lttng_channel_poll,
.cmd = lttng_channel_cmd,
};
};
/**
- * lttng_event_cmd - lttng control through object descriptors
- *
- * @objd: the object descriptor
- * @cmd: the command
- * @arg: command arg
- * @uargs: UST arguments (internal)
- * @owner: objd owner
- *
- * This object descriptor implements lttng commands:
- * LTTNG_UST_CONTEXT
- * Prepend a context field to each record of this event
- * LTTNG_UST_ENABLE
- * Enable recording for this event (weak enable)
- * LTTNG_UST_DISABLE
- * Disable recording for this event (strong disable)
- * LTTNG_UST_FILTER
- * Attach a filter to an event.
- */
-static
-long lttng_event_cmd(int objd, unsigned int cmd, unsigned long arg,
- union ust_args *uargs, void *owner)
-{
- struct lttng_event *event = objd_private(objd);
-
- switch (cmd) {
- case LTTNG_UST_CONTEXT:
- return lttng_abi_add_context(objd,
- (struct lttng_ust_context *) arg,
- &event->ctx, event->chan->session);
- case LTTNG_UST_ENABLE:
- return lttng_event_enable(event);
- case LTTNG_UST_DISABLE:
- return lttng_event_disable(event);
- case LTTNG_UST_FILTER:
- {
- int ret;
- ret = lttng_filter_event_attach_bytecode(event,
- (struct lttng_ust_filter_bytecode_node *) arg);
- if (ret)
- return ret;
- lttng_filter_event_link_bytecode(event);
- return 0;
- }
- default:
- return -EINVAL;
- }
-}
-
-static
-int lttng_event_release(int objd)
-{
- struct lttng_event *event = objd_private(objd);
-
- if (event)
- return lttng_ust_objd_unref(event->chan->objd);
- return 0;
-}
-
-/* TODO: filter control ioctl */
-static const struct lttng_ust_objd_ops lttng_event_ops = {
- .release = lttng_event_release,
- .cmd = lttng_event_cmd,
-};
-
-/**
- * lttng_wildcard_cmd - lttng control through object descriptors
+ * lttng_enabler_cmd - lttng control through object descriptors
*
* @objd: the object descriptor
* @cmd: the command
* This object descriptor implements lttng commands:
* LTTNG_UST_CONTEXT
* Prepend a context field to each record of events of this
- * wildcard.
+ * enabler.
* LTTNG_UST_ENABLE
- * Enable recording for these wildcard events (weak enable)
+ * Enable recording for this enabler
* LTTNG_UST_DISABLE
- * Disable recording for these wildcard events (strong disable)
+ * Disable recording for this enabler
* LTTNG_UST_FILTER
- * Attach a filter to a wildcard.
+ * Attach a filter to an enabler.
*/
static
-long lttng_wildcard_cmd(int objd, unsigned int cmd, unsigned long arg,
+long lttng_enabler_cmd(int objd, unsigned int cmd, unsigned long arg,
union ust_args *uargs, void *owner)
{
- struct session_wildcard *wildcard = objd_private(objd);
+ struct lttng_enabler *enabler = objd_private(objd);
switch (cmd) {
case LTTNG_UST_CONTEXT:
- return -ENOSYS; /* not implemented yet */
-#if 0
- return lttng_abi_add_context(objd,
- (struct lttng_ust_context *) arg,
- &wildcard->ctx, wildcard->chan->session);
-#endif
+ return lttng_enabler_attach_context(enabler,
+ (struct lttng_ust_context *) arg);
case LTTNG_UST_ENABLE:
- return lttng_wildcard_enable(wildcard);
+ return lttng_enabler_enable(enabler);
case LTTNG_UST_DISABLE:
- return lttng_wildcard_disable(wildcard);
+ return lttng_enabler_disable(enabler);
case LTTNG_UST_FILTER:
{
int ret;
- ret = lttng_filter_wildcard_attach_bytecode(wildcard,
+ ret = lttng_enabler_attach_bytecode(enabler,
(struct lttng_ust_filter_bytecode_node *) arg);
if (ret)
return ret;
- lttng_filter_wildcard_link_bytecode(wildcard);
return 0;
}
default:
}
static
-int lttng_wildcard_release(int objd)
+int lttng_enabler_release(int objd)
{
- struct session_wildcard *wildcard = objd_private(objd);
+ struct lttng_enabler *enabler = objd_private(objd);
- if (wildcard)
- return lttng_ust_objd_unref(wildcard->chan->objd);
+ if (enabler)
+ return lttng_ust_objd_unref(enabler->chan->objd);
return 0;
}
-/* TODO: filter control ioctl */
-static const struct lttng_ust_objd_ops lttng_wildcard_ops = {
- .release = lttng_wildcard_release,
- .cmd = lttng_wildcard_cmd,
+static const struct lttng_ust_objd_ops lttng_enabler_ops = {
+ .release = lttng_enabler_release,
+ .cmd = lttng_enabler_cmd,
};
void lttng_ust_abi_exit(void)
projects / lttng-ust.git / blobdiff