*
* 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 <lttng/tracepoint-types.h>
#include <string.h> /* for memset */
#include <assert.h>
#include <lttng/ust-config.h> /* for sdt */
+#include <lttng/ust-compiler.h>
#ifdef LTTNG_UST_HAVE_SDT_INTEGRATION
#define SDT_USE_VARIADIC
#define _DECLARE_TRACEPOINT(_provider, _name, ...) \
extern struct tracepoint __tracepoint_##_provider##___##_name; \
-static inline void __tracepoint_cb_##_provider##___##_name(_TP_ARGS_PROTO(__VA_ARGS__)) \
+static inline lttng_ust_notrace \
+void __tracepoint_cb_##_provider##___##_name(_TP_ARGS_PROTO(__VA_ARGS__)); \
+static inline \
+void __tracepoint_cb_##_provider##___##_name(_TP_ARGS_PROTO(__VA_ARGS__)) \
{ \
struct tracepoint_probe *__tp_probe; \
\
if (caa_unlikely(!__tp_probe)) \
goto end; \
do { \
- void *__tp_cb = __tp_probe->func; \
+ void (*__tp_cb)(void) = __tp_probe->func; \
void *__tp_data = __tp_probe->data; \
\
URCU_FORCE_CAST(void (*)(_TP_ARGS_DATA_PROTO(__VA_ARGS__)), __tp_cb) \
end: \
tp_rcu_read_unlock_bp(); \
} \
-static inline void __tracepoint_register_##_provider##___##_name(char *name, \
- void *func, void *data) \
+static inline lttng_ust_notrace \
+void __tracepoint_register_##_provider##___##_name(char *name, \
+ void (*func)(void), void *data); \
+static inline \
+void __tracepoint_register_##_provider##___##_name(char *name, \
+ void (*func)(void), void *data) \
{ \
__tracepoint_probe_register(name, func, data, \
__tracepoint_##_provider##___##_name.signature); \
} \
-static inline void __tracepoint_unregister_##_provider##___##_name(char *name, \
- void *func, void *data) \
+static inline lttng_ust_notrace \
+void __tracepoint_unregister_##_provider##___##_name(char *name, \
+ void (*func)(void), void *data); \
+static inline \
+void __tracepoint_unregister_##_provider##___##_name(char *name, \
+ void (*func)(void), void *data) \
{ \
__tracepoint_probe_unregister(name, func, data); \
}
-extern int __tracepoint_probe_register(const char *name, void *func, void *data,
- const char *signature);
-extern int __tracepoint_probe_unregister(const char *name, void *func, void *data);
+extern int __tracepoint_probe_register(const char *name, void (*func)(void),
+ void *data, const char *signature);
+extern int __tracepoint_probe_unregister(const char *name, void (*func)(void),
+ void *data);
/*
* tracepoint dynamic linkage handling (callbacks). Hidden visibility:
#ifdef TRACEPOINT_DEFINE
+/*
+ * These weak symbols, the constructor, and destructor take care of
+ * registering only _one_ instance of the tracepoints per shared-ojbect
+ * (or for the whole main program).
+ */
+extern struct tracepoint * const __start___tracepoints_ptrs[]
+ __attribute__((weak, visibility("hidden")));
+extern struct tracepoint * const __stop___tracepoints_ptrs[]
+ __attribute__((weak, visibility("hidden")));
+
/*
* When TRACEPOINT_PROBE_DYNAMIC_LINKAGE is defined, we do not emit a
* unresolved symbol that requires the provider to be linked in. When
__attribute__((used, section("__tracepoints_ptrs"))) = \
&__tracepoint_##_provider##___##_name;
+static inline void __tracepoints__init_define(void)
+{
+ tracepoint_dlopen.tracepoint_register_lib(__start___tracepoints_ptrs,
+ __stop___tracepoints_ptrs -
+ __start___tracepoints_ptrs);
+}
+
+static inline void __tracepoints__destroy_define(void)
+{
+ if (tracepoint_dlopen.tracepoint_unregister_lib)
+ tracepoint_dlopen.tracepoint_unregister_lib(__start___tracepoints_ptrs);
+}
+
+
+#else /* TRACEPOINT_DEFINE */
+
+#define _DEFINE_TRACEPOINT(_provider, _name, _args)
+
+static inline void __tracepoints__init_define(void)
+{
+}
+
+static inline void __tracepoints__destroy_define(void)
+{
+}
+
+#endif /* #else TRACEPOINT_DEFINE */
+
+#if defined(TRACEPOINT_DEFINE) || defined(TRACEPOINT_CREATE_PROBES)
+
/*
* These weak symbols, the constructor, and destructor take care of
* registering only _one_ instance of the tracepoints per shared-ojbect
* (or for the whole main program).
*/
-extern struct tracepoint * const __start___tracepoints_ptrs[]
- __attribute__((weak, visibility("hidden")));
-extern struct tracepoint * const __stop___tracepoints_ptrs[]
- __attribute__((weak, visibility("hidden")));
int __tracepoint_registered
__attribute__((weak, visibility("hidden")));
struct tracepoint_dlopen tracepoint_dlopen
__attribute__((weak, visibility("hidden")));
-static void __attribute__((constructor)) __tracepoints__init(void)
+static void lttng_ust_notrace __attribute__((constructor))
+__tracepoints__init(void);
+static void
+__tracepoints__init(void)
{
if (__tracepoint_registered++)
return;
dlsym(tracepoint_dlopen.liblttngust_handle,
"tp_rcu_dereference_sym_bp"));
#endif
- tracepoint_dlopen.tracepoint_register_lib(__start___tracepoints_ptrs,
- __stop___tracepoints_ptrs -
- __start___tracepoints_ptrs);
+ __tracepoints__init_define();
}
-static void __attribute__((destructor)) __tracepoints__destroy(void)
+static void lttng_ust_notrace __attribute__((destructor))
+__tracepoints__destroy(void);
+static void
+__tracepoints__destroy(void)
{
int ret;
if (--__tracepoint_registered)
return;
- if (tracepoint_dlopen.tracepoint_unregister_lib)
- tracepoint_dlopen.tracepoint_unregister_lib(__start___tracepoints_ptrs);
+ __tracepoints__destroy_define();
if (tracepoint_dlopen.liblttngust_handle) {
ret = dlclose(tracepoint_dlopen.liblttngust_handle);
assert(!ret);
}
}
-#else /* TRACEPOINT_DEFINE */
-
-#define _DEFINE_TRACEPOINT(_provider, _name, _args)
-
-#endif /* #else TRACEPOINT_DEFINE */
+#endif
#ifdef __cplusplus
}
#define TRACEPOINT_LOGLEVEL(provider, name, loglevel)
#endif /* #ifndef TRACEPOINT_LOGLEVEL */
+
+#ifndef TRACEPOINT_MODEL_EMF_URI
+
+#define TRACEPOINT_MODEL_EMF_URI(provider, name, uri)
+
+#endif /* #ifndef TRACEPOINT_MODEL_EMF_URI */
projects / lttng-ust.git / blobdiff