* modified is included with the above copyright notice.
*/
-#include <urcu-bp.h>
-#include <tracepoint-types.h>
+#include <lttng/tracepoint-types.h>
+#include <lttng/tracepoint-rcu.h>
#include <urcu/compiler.h>
#include <dlfcn.h> /* for dlopen */
+#include <assert.h>
#ifdef __cplusplus
extern "C" {
* fine too).
* Each tuple is also separated by a comma.
*/
-#define _TP_COMBINE_TOKENS1(_tokena, _tokenb) _tokena##_tokenb
-#define _TP_COMBINE_TOKENS(_tokena, _tokenb) _TP_COMBINE_TOKENS1(_tokena, _tokenb)
+#define __TP_COMBINE_TOKENS(_tokena, _tokenb) \
+ _tokena##_tokenb
+#define _TP_COMBINE_TOKENS(_tokena, _tokenb) \
+ __TP_COMBINE_TOKENS(_tokena, _tokenb)
+#define __TP_COMBINE_TOKENS3(_tokena, _tokenb, _tokenc) \
+ _tokena##_tokenb##_tokenc
+#define _TP_COMBINE_TOKENS3(_tokena, _tokenb, _tokenc) \
+ __TP_COMBINE_TOKENS3(_tokena, _tokenb, _tokenc)
+#define __TP_COMBINE_TOKENS4(_tokena, _tokenb, _tokenc, _tokend) \
+ _tokena##_tokenb##_tokenc##_tokend
+#define _TP_COMBINE_TOKENS4(_tokena, _tokenb, _tokenc, _tokend) \
+ __TP_COMBINE_TOKENS4(_tokena, _tokenb, _tokenc, _tokend)
/* _TP_EXVAR* extract the var names. */
#define _TP_EXVAR0()
{ \
struct tracepoint_probe *__tp_probe; \
\
- if (!rcu_read_lock_bp) \
+ if (!TP_RCU_LINK_TEST()) \
return; \
- rcu_read_lock_bp(); \
- __tp_probe = rcu_dereference_bp(__tracepoint_##provider##___##name.probes); \
+ tp_rcu_read_lock_bp(); \
+ __tp_probe = tp_rcu_dereference_bp(__tracepoint_##provider##___##name.probes); \
if (caa_unlikely(!__tp_probe)) \
goto end; \
do { \
(_TP_ARGS_DATA_VAR(__VA_ARGS__)); \
} while ((++__tp_probe)->func); \
end: \
- rcu_read_unlock_bp(); \
+ tp_rcu_read_unlock_bp(); \
} \
static inline void __tracepoint_register_##provider##___##name(char *name, \
void *func, void *data) \
if (__tracepoint_registered++)
return;
- liblttngust_handle = dlopen("liblttng-ust.so", RTLD_NOW | RTLD_GLOBAL);
+ liblttngust_handle = dlopen("liblttng-ust-tracepoint.so.0", RTLD_NOW | RTLD_GLOBAL);
if (!liblttngust_handle)
return;
- tracepoint_register_lib = dlsym(liblttngust_handle,
- "tracepoint_register_lib");
- tracepoint_unregister_lib = dlsym(liblttngust_handle,
- "tracepoint_unregister_lib");
+ tracepoint_register_lib =
+ URCU_FORCE_CAST(int (*)(struct tracepoint * const *, int),
+ dlsym(liblttngust_handle,
+ "tracepoint_register_lib"));
+ tracepoint_unregister_lib =
+ URCU_FORCE_CAST(int (*)(struct tracepoint * const *),
+ dlsym(liblttngust_handle,
+ "tracepoint_unregister_lib"));
+#ifndef _LGPL_SOURCE
+ tp_rcu_read_lock_bp =
+ URCU_FORCE_CAST(void (*)(void),
+ dlsym(liblttngust_handle,
+ "tp_rcu_read_lock_bp"));
+ tp_rcu_read_unlock_bp =
+ URCU_FORCE_CAST(void (*)(void),
+ dlsym(liblttngust_handle,
+ "tp_rcu_read_unlock_bp"));
+ tp_rcu_dereference_sym_bp =
+ URCU_FORCE_CAST(void *(*)(void *p),
+ dlsym(liblttngust_handle,
+ "tp_rcu_dereference_sym_bp"));
+#endif
tracepoint_register_lib(__start___tracepoints_ptrs,
__stop___tracepoints_ptrs -
__start___tracepoints_ptrs);
#ifndef TRACEPOINT_LOGLEVEL
/*
- * Tracepoint Loglevel Declaration Facility
- *
- * This is a place-holder the tracepoint loglevel declaration,
- * overridden by the tracer implementation.
+ * Tracepoint Loglevels
*
* Typical use of these loglevels:
*
- * 1) Declare the mapping between loglevel names and an integer values
- * within TRACEPOINT_LOGLEVEL_ENUM(), using tp_loglevel() for each
- * tuple. Do _NOT_ add comma (,) nor semicolon (;) between the
- * tp_loglevel entries contained within TRACEPOINT_LOGLEVEL_ENUM().
- * Do _NOT_ add comma (,) nor semicolon (;) after the
- * TRACEPOINT_LOGLEVEL_ENUM() declaration. The name should be a
- * proper C99 identifier.
- *
- * TRACEPOINT_LOGLEVEL_ENUM(
- * tp_loglevel( < loglevel_name >, < value > )
- * tp_loglevel( < loglevel_name >, < value > )
- * ...
- * )
- *
- * e.g.:
- *
- * TRACEPOINT_LOGLEVEL_ENUM(
- * tp_loglevel(LOG_EMERG, 0)
- * tp_loglevel(LOG_ALERT, 1)
- * tp_loglevel(LOG_CRIT, 2)
- * tp_loglevel(LOG_ERR, 3)
- * tp_loglevel(LOG_WARNING, 4)
- * tp_loglevel(LOG_NOTICE, 5)
- * tp_loglevel(LOG_INFO, 6)
- * tp_loglevel(LOG_DEBUG, 7)
- * )
- *
- * 2) Then, declare tracepoint loglevels for tracepoints. A
- * TRACEPOINT_EVENT should be declared prior to the the
- * TRACEPOINT_LOGLEVEL for a given tracepoint name. The first field
- * is the name of the tracepoint, the second field is the loglevel
- * name.
+ * The loglevels go from 0 to 15. Higher numbers imply the most
+ * verbosity (higher event throughput expected.
+ *
+ * Loglevels 0 through 6, and loglevel 15, match syslog(3) loglevels
+ * semantic. Loglevels 7 through 14 offer more fine-grained selection of
+ * traced information.
+ *
+ * TRACE_EMERG 0
+ * system is unusable
+ *
+ * TRACE_ALERT 1
+ * action must be taken immediately
+ *
+ * TRACE_CRIT 2
+ * critical conditions
+ *
+ * TRACE_ERR 3
+ * error conditions
+ *
+ * TRACE_WARNING 4
+ * warning conditions
+ *
+ * TRACE_NOTICE 5
+ * normal, but significant, condition
+ *
+ * TRACE_INFO 6
+ * informational message
+ *
+ * TRACE_SYSTEM 7
+ * information has system-level scope (set of programs)
+ *
+ * TRACE_PROGRAM 8
+ * information has program-level scope (set of processes)
+ *
+ * TRACE_PROCESS 9
+ * information has process-level scope (set of modules)
+ *
+ * TRACE_MODULE 10
+ * information has module (executable/library) scope (set of units)
+ *
+ * TRACE_UNIT 11
+ * information has compilation unit scope (set of functions)
+ *
+ * TRACE_FUNCTION 12
+ * information has function-level scope
+ *
+ * TRACE_DEFAULT 13
+ * default trace loglevel (TRACEPOINT_EVENT default)
+ *
+ * TRACE_VERBOSE 14
+ * verbose information
+ *
+ * TRACE_DEBUG 15
+ * debug-level message (trace_printf default)
+ *
+ * Declare tracepoint loglevels for tracepoints. A TRACEPOINT_EVENT
+ * should be declared prior to the the TRACEPOINT_LOGLEVEL for a given
+ * tracepoint name. The first field is the name of the tracepoint, the
+ * second field is the loglevel name.
*
* TRACEPOINT_LOGLEVEL(< [com_company_]project[_component] >, < event >,
* < loglevel_name >)
*
- * The TRACEPOINT_PROVIDER must be defined when declaring a
- * TRACEPOINT_LOGLEVEL_ENUM and TRACEPOINT_LOGLEVEL. The tracepoint
- * loglevel enumeration apply to the entire TRACEPOINT_PROVIDER. Only one
- * tracepoint loglevel enumeration should be declared per tracepoint
- * provider.
+ * The TRACEPOINT_PROVIDER must be already declared before declaring a
+ * TRACEPOINT_LOGLEVEL.
*/
-#define TRACEPOINT_LOGLEVEL_ENUM(...)
+enum {
+ TRACE_EMERG = 0,
+ TRACE_ALERT = 1,
+ TRACE_CRIT = 2,
+ TRACE_ERR = 3,
+ TRACE_WARNING = 4,
+ TRACE_NOTICE = 5,
+ TRACE_INFO = 6,
+ TRACE_SYSTEM = 7,
+ TRACE_PROGRAM = 8,
+ TRACE_PROCESS = 9,
+ TRACE_MODULE = 10,
+ TRACE_UNIT = 11,
+ TRACE_FUNCTION = 12,
+ TRACE_DEFAULT = 13,
+ TRACE_VERBOSE = 14,
+ TRACE_DEBUG = 15,
+};
+
#define TRACEPOINT_LOGLEVEL(provider, name, loglevel)
#endif /* #ifndef TRACEPOINT_LOGLEVEL */
projects / lttng-ust.git / blobdiff