*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
*/
#include <stdio.h>
+#include <stdlib.h>
#include <urcu/compiler.h>
#include <urcu/rculist.h>
#include <lttng/ust-events.h>
#include <lttng/ringbuffer-config.h>
#include <lttng/ust-compiler.h>
+#include <lttng/tracepoint.h>
#include <string.h>
+#undef tp_list_for_each_entry_rcu
+#define tp_list_for_each_entry_rcu(pos, head, member) \
+ for (pos = cds_list_entry(tp_rcu_dereference_bp((head)->next), __typeof__(*pos), member); \
+ &pos->member != (head); \
+ pos = cds_list_entry(tp_rcu_dereference_bp(pos->member.next), __typeof__(*pos), member))
+
/*
* TRACEPOINT_EVENT_CLASS declares a class of tracepoints receiving the
* same arguments and having the same field layout.
#define TRACEPOINT_EVENT_INSTANCE(_provider, _template, _name, _args) \
__tracepoint_provider_mismatch_##_provider();
-static __attribute__((unused))
+static inline
void _TP_COMBINE_TOKENS(__tracepoint_provider_check_, TRACEPOINT_PROVIDER)(void)
{
#include TRACEPOINT_INCLUDE
.type = \
{ \
.atype = atype_array, \
- .u.array = \
+ .u = \
{ \
- .length = _length, \
- .elem_type = __type_integer(_type, BYTE_ORDER, 10, _encoding), \
- }, \
+ .array = \
+ { \
+ .elem_type = __type_integer(_type, BYTE_ORDER, 10, _encoding), \
+ .length = _length, \
+ } \
+ } \
}, \
.nowrite = _nowrite, \
},
.type = \
{ \
.atype = atype_sequence, \
- .u.sequence = \
+ .u = \
{ \
- .length_type = __type_integer(_length_type, BYTE_ORDER, 10, none), \
- .elem_type = __type_integer(_type, BYTE_ORDER, 10, _encoding), \
+ .sequence = \
+ { \
+ .length_type = __type_integer(_length_type, BYTE_ORDER, 10, none), \
+ .elem_type = __type_integer(_type, BYTE_ORDER, 10, _encoding), \
+ }, \
}, \
}, \
.nowrite = _nowrite, \
.type = \
{ \
.atype = atype_string, \
- .u.basic.string.encoding = lttng_encode_UTF8, \
+ .u = \
+ { \
+ .basic = { .string = { .encoding = lttng_encode_UTF8 } } \
+ }, \
}, \
.nowrite = _nowrite, \
},
static \
void __event_probe__##_provider##___##_name(_TP_ARGS_DATA_PROTO(_args)) \
{ \
- struct lttng_event *__event = __tp_data; \
+ struct lttng_event *__event = (struct lttng_event *) __tp_data; \
struct lttng_channel *__chan = __event->chan; \
struct lttng_ust_lib_ring_buffer_ctx __ctx; \
size_t __event_len, __event_align; \
return; \
if (caa_unlikely(!CMM_ACCESS_ONCE(__event->enabled))) \
return; \
+ if (caa_unlikely(!TP_RCU_LINK_TEST())) \
+ return; \
if (caa_unlikely(!cds_list_empty(&__event->bytecode_runtime_head))) { \
struct lttng_bytecode_runtime *bc_runtime; \
- int __filter_result = 0; \
+ int __filter_record = __event->has_enablers_without_bytecode; \
\
__event_prepare_filter_stack__##_provider##___##_name(__stackvar.__filter_stack_data, \
_TP_ARGS_DATA_VAR(_args)); \
- cds_list_for_each_entry_rcu(bc_runtime, &__event->bytecode_runtime_head, node) { \
+ tp_list_for_each_entry_rcu(bc_runtime, &__event->bytecode_runtime_head, node) { \
if (caa_unlikely(bc_runtime->filter(bc_runtime, \
- __stackvar.__filter_stack_data))) \
- __filter_result = 1; \
+ __stackvar.__filter_stack_data) & LTTNG_FILTER_RECORD_FLAG)) \
+ __filter_record = 1; \
} \
- if (caa_likely(!__filter_result)) \
+ if (caa_likely(!__filter_record)) \
return; \
} \
__event_len = __event_get_size__##_provider##___##_name(__stackvar.__dynamic_len, \
__ref_model_emf_uri___##_provider##___##_name \
__attribute__((weakref ("_model_emf_uri___" #_provider "___" #_name)));\
const struct lttng_event_desc __event_desc___##_provider##_##_name = { \
- .fields = __event_fields___##_provider##___##_template, \
.name = #_provider ":" #_name, \
.probe_callback = (void (*)(void)) &__event_probe__##_provider##___##_template,\
+ .ctx = NULL, \
+ .fields = __event_fields___##_provider##___##_template, \
.nr_fields = _TP_ARRAY_SIZE(__event_fields___##_provider##___##_template), \
.loglevel = &__ref_loglevel___##_provider##___##_name, \
.signature = __tp_event_signature___##_provider##___##_template, \
- .u.ext.model_emf_uri = &__ref_model_emf_uri___##_provider##___##_name, \
+ .u = { .ext = { .model_emf_uri = &__ref_model_emf_uri___##_provider##___##_name } }, \
};
#include TRACEPOINT_INCLUDE
.provider = __tp_stringify(TRACEPOINT_PROVIDER),
.event_desc = _TP_COMBINE_TOKENS(__event_desc___, TRACEPOINT_PROVIDER),
.nr_events = _TP_ARRAY_SIZE(_TP_COMBINE_TOKENS(__event_desc___, TRACEPOINT_PROVIDER)),
+ .head = { NULL, NULL },
+ .lazy_init_head = { NULL, NULL },
+ .lazy = 0,
+ .major = LTTNG_UST_PROVIDER_MAJOR,
+ .minor = LTTNG_UST_PROVIDER_MINOR,
};
/*
{
int ret;
+ /*
+ * __tracepoint_provider_check_ ## TRACEPOINT_PROVIDER() is a
+ * static inline function that ensures every probe PROVIDER
+ * argument match the provider within which they appear. It
+ * calls empty static inline functions, and therefore has no
+ * runtime effect. However, if it detects an error, a linker
+ * error will appear.
+ */
+ _TP_COMBINE_TOKENS(__tracepoint_provider_check_, TRACEPOINT_PROVIDER)();
ret = lttng_probe_register(&_TP_COMBINE_TOKENS(__probe_desc___, TRACEPOINT_PROVIDER));
- assert(!ret);
+ if (ret) {
+ fprintf(stderr, "LTTng-UST: Error (%d) while registering tracepoint probe. Duplicate registration of tracepoint probes having the same name is not allowed.\n", ret);
+ abort();
+ }
}
static void lttng_ust_notrace __attribute__((destructor))
projects / lttng-ust.git / blobdiff