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Extract input/output arguments from accept and connect syscalls
[lttng-modules.git] / probes / lttng-events.h
diff --git a/probes/lttng-events.h b/probes/lttng-events.h
index ab6f342b3e9c8df6c08dc17af8a2203589d3214e..62ed63610df45820fb2f0f4aad269bf8840cecc0 100644 (file)
--- a/probes/lttng-events.h
+++ b/probes/lttng-events.h
@@ -54,6 +54,18 @@
                             PARAMS(print))                             \
        DEFINE_EVENT_MAP_NOARGS(map, name, map)
 
+#undef LTTNG_TRACE_EVENT
+#define LTTNG_TRACE_EVENT(name, proto, args, _locvar, _code, tstruct, assign, print) \
+       LTTNG_DECLARE_EVENT_CLASS(name,                                 \
+                            PARAMS(proto),                             \
+                            PARAMS(args),                              \
+                            PARAMS(_locvar),                           \
+                            PARAMS(_code),                             \
+                            PARAMS(tstruct),                           \
+                            PARAMS(assign),                            \
+                            PARAMS(print))                             \
+       DEFINE_EVENT_MAP(name, name, name, PARAMS(proto), PARAMS(args))
+
 #undef DEFINE_EVENT_PRINT_MAP
 #define DEFINE_EVENT_PRINT_MAP(template, name, map, proto, args, print)        \
        DEFINE_EVENT_MAP(template, name, map, PARAMS(proto), PARAMS(args))
@@ -130,6 +142,17 @@
                PARAMS(assign),                                         \
                PARAMS(print))
 
+#undef DECLARE_EVENT_CLASS
+#define DECLARE_EVENT_CLASS(_name, _proto, _args, _tstruct, _assign, _print)  \
+       LTTNG_DECLARE_EVENT_CLASS(_name, PARAMS(_proto), PARAMS(_args), , , \
+               PARAMS(_tstruct), PARAMS(_assign), PARAMS(_print))
+
+#undef DECLARE_EVENT_CLASS_NOARGS
+#define DECLARE_EVENT_CLASS_NOARGS(_name, _tstruct, _assign, _print)   \
+       LTTNG_DECLARE_EVENT_CLASS_NOARGS(_name, , , PARAMS(_tstruct),   \
+               PARAMS(_assign), PARAMS(_print))
+
+
 /*
  * Stage 1 of the trace events.
  *
@@ -186,6 +209,10 @@ void trace_##_name(void *__data);
 #define __field_hex(_type, _item)                              \
        __field_full(_type, _item, __BYTE_ORDER, 16)
 
+#undef __field_oct
+#define __field_oct(_type, _item)                              \
+       __field_full(_type, _item, __BYTE_ORDER, 8)
+
 #undef __field_network
 #define __field_network(_type, _item)                          \
        __field_full(_type, _item, __BIG_ENDIAN, 10)
@@ -252,6 +279,14 @@ void trace_##_name(void *__data);
 #define __dynamic_array_hex(_type, _item, _length)             \
        __dynamic_array_enc_ext(_type, _item, _length, __BYTE_ORDER, 16, none)
 
+#undef __dynamic_array_network_hex
+#define __dynamic_array_network_hex(_type, _item, _length)             \
+       __dynamic_array_enc_ext(_type, _item, _length, __BIG_ENDIAN, 16, none)
+
+#undef __dynamic_array_network
+#define __dynamic_array_network(_type, _item, _length)         \
+       __dynamic_array_enc_ext(_type, _item, _length, __BIG_ENDIAN, 10, none)
+
 #undef __dynamic_array_text_2
 #define __dynamic_array_text_2(_type, _item, _length1, _length2)       \
        __dynamic_array_enc_ext_2(_type, _item, _length1, _length2, __BYTE_ORDER, 10, UTF8)
@@ -274,15 +309,15 @@ void trace_##_name(void *__data);
 #undef TP_STRUCT__entry
 #define TP_STRUCT__entry(args...) args /* Only one used in this phase */
 
-#undef DECLARE_EVENT_CLASS_NOARGS
-#define DECLARE_EVENT_CLASS_NOARGS(_name, _tstruct, _assign, _print) \
+#undef LTTNG_DECLARE_EVENT_CLASS_NOARGS
+#define LTTNG_DECLARE_EVENT_CLASS_NOARGS(_name, _locvar, _code, _tstruct, _assign, _print) \
        static const struct lttng_event_field __event_fields___##_name[] = { \
                _tstruct                                                     \
        };
 
-#undef DECLARE_EVENT_CLASS
-#define DECLARE_EVENT_CLASS(_name, _proto, _args, _tstruct, _assign, _print) \
-       DECLARE_EVENT_CLASS_NOARGS(_name, PARAMS(_tstruct), PARAMS(_assign), \
+#undef LTTNG_DECLARE_EVENT_CLASS
+#define LTTNG_DECLARE_EVENT_CLASS(_name, _proto, _args, _locvar, _code, _tstruct, _assign, _print) \
+       LTTNG_DECLARE_EVENT_CLASS_NOARGS(_name, _locvar, _code, PARAMS(_tstruct), PARAMS(_assign), \
                        PARAMS(_print))
 
 #include TRACE_INCLUDE(TRACE_INCLUDE_FILE)
@@ -298,12 +333,12 @@ void trace_##_name(void *__data);
 #undef TP_PROTO
 #define TP_PROTO(args...) args
 
-#undef DECLARE_EVENT_CLASS
-#define DECLARE_EVENT_CLASS(_name, _proto, _args, _tstruct, _assign, _print)  \
+#undef LTTNG_DECLARE_EVENT_CLASS
+#define LTTNG_DECLARE_EVENT_CLASS(_name, _proto, _args, _locvar, _code, _tstruct, _assign, _print) \
 static void __event_probe__##_name(void *__data, _proto);
 
-#undef DECLARE_EVENT_CLASS_NOARGS
-#define DECLARE_EVENT_CLASS_NOARGS(_name, _tstruct, _assign, _print)         \
+#undef LTTNG_DECLARE_EVENT_CLASS_NOARGS
+#define LTTNG_DECLARE_EVENT_CLASS_NOARGS(_name, _locvar, _code, _tstruct, _assign, _print) \
 static void __event_probe__##_name(void *__data);
 
 #include TRACE_INCLUDE(TRACE_INCLUDE_FILE)
@@ -409,7 +444,7 @@ static __used struct lttng_probe_desc TP_ID(__probe_desc___, TRACE_SYSTEM) = {
 
 #undef __dynamic_array_enc_ext
 #define __dynamic_array_enc_ext(_type, _item, _length, _order, _base, _encoding)\
-       __event_len += lib_ring_buffer_align(__event_len, lttng_alignof(u32));   \
+       __event_len += lib_ring_buffer_align(__event_len, lttng_alignof(u32)); \
        __event_len += sizeof(u32);                                            \
        __event_len += lib_ring_buffer_align(__event_len, lttng_alignof(_type)); \
        __dynamic_len[__dynamic_len_idx] = (_length);                          \
@@ -418,7 +453,7 @@ static __used struct lttng_probe_desc TP_ID(__probe_desc___, TRACE_SYSTEM) = {
 
 #undef __dynamic_array_enc_ext_2
 #define __dynamic_array_enc_ext_2(_type, _item, _length1, _length2, _order, _base, _encoding)\
-       __event_len += lib_ring_buffer_align(__event_len, lttng_alignof(u32));   \
+       __event_len += lib_ring_buffer_align(__event_len, lttng_alignof(u32)); \
        __event_len += sizeof(u32);                                            \
        __event_len += lib_ring_buffer_align(__event_len, lttng_alignof(_type)); \
        __dynamic_len[__dynamic_len_idx] = (_length1);                         \
@@ -447,15 +482,31 @@ static __used struct lttng_probe_desc TP_ID(__probe_desc___, TRACE_SYSTEM) = {
 #undef TP_STRUCT__entry
 #define TP_STRUCT__entry(args...) args
 
-#undef DECLARE_EVENT_CLASS
-#define DECLARE_EVENT_CLASS(_name, _proto, _args, _tstruct, _assign, _print)  \
-static inline size_t __event_get_size__##_name(size_t *__dynamic_len, _proto) \
+#undef TP_locvar
+#define TP_locvar(...) __VA_ARGS__
+
+#undef LTTNG_DECLARE_EVENT_CLASS
+#define LTTNG_DECLARE_EVENT_CLASS(_name, _proto, _args, _locvar, _code, _tstruct, _assign, _print)  \
+static inline size_t __event_get_size__##_name(size_t *__dynamic_len,        \
+               void *__tp_locvar, _proto)                                    \
+{                                                                            \
+       size_t __event_len = 0;                                               \
+       unsigned int __dynamic_len_idx __attribute__((unused)) = 0;           \
+       struct { _locvar } *tp_locvar __attribute__((unused)) = __tp_locvar;  \
+                                                                             \
+       _tstruct                                                              \
+       return __event_len;                                                   \
+}
+
+#undef LTTNG_DECLARE_EVENT_CLASS_NOARGS
+#define LTTNG_DECLARE_EVENT_CLASS_NOARGS(_name, _locvar, _code, _tstruct, _assign, _print)  \
+static inline size_t __event_get_size__##_name(size_t *__dynamic_len,        \
+               void *__tp_locvar)                                            \
 {                                                                            \
        size_t __event_len = 0;                                               \
-       unsigned int __dynamic_len_idx = 0;                                   \
+       unsigned int __dynamic_len_idx __attribute__((unused)) = 0;           \
+       struct { _locvar } *tp_locvar __attribute__((unused)) = __tp_locvar;  \
                                                                              \
-       if (0)                                                                \
-               (void) __dynamic_len_idx;       /* don't warn if unused */    \
        _tstruct                                                              \
        return __event_len;                                                   \
 }
@@ -482,7 +533,7 @@ static inline size_t __event_get_size__##_name(size_t *__dynamic_len, _proto) \
 
 #undef __dynamic_array_enc_ext
 #define __dynamic_array_enc_ext(_type, _item, _length, _order, _base, _encoding)\
-       __event_align = max_t(size_t, __event_align, lttng_alignof(u32));         \
+       __event_align = max_t(size_t, __event_align, lttng_alignof(u32)); \
        __event_align = max_t(size_t, __event_align, lttng_alignof(_type));
 
 #undef __dynamic_array_enc_ext_2
@@ -501,17 +552,32 @@ static inline size_t __event_get_size__##_name(size_t *__dynamic_len, _proto) \
 #undef TP_STRUCT__entry
 #define TP_STRUCT__entry(args...) args
 
-#undef DECLARE_EVENT_CLASS
-#define DECLARE_EVENT_CLASS(_name, _proto, _args, _tstruct, _assign, _print)  \
-static inline size_t __event_get_align__##_name(_proto)                              \
+#undef TP_locvar
+#define TP_locvar(...) __VA_ARGS__
+
+#undef LTTNG_DECLARE_EVENT_CLASS
+#define LTTNG_DECLARE_EVENT_CLASS(_name, _proto, _args, _locvar, _code, _tstruct, _assign, _print)  \
+static inline size_t __event_get_align__##_name(void *__tp_locvar, _proto) \
 {                                                                            \
        size_t __event_align = 1;                                             \
+       struct { _locvar } *tp_locvar __attribute__((unused)) = __tp_locvar;  \
+                                                                             \
        _tstruct                                                              \
        return __event_align;                                                 \
 }
 
-#include TRACE_INCLUDE(TRACE_INCLUDE_FILE)
+#undef LTTNG_DECLARE_EVENT_CLASS_NOARGS
+#define LTTNG_DECLARE_EVENT_CLASS_NOARGS(_name, _locvar, _code, _tstruct, _assign, _print)  \
+static inline size_t __event_get_align__##_name(void *__tp_locvar)           \
+{                                                                            \
+       size_t __event_align = 1;                                             \
+       struct { _locvar } *tp_locvar __attribute__((unused)) = __tp_locvar;  \
+                                                                             \
+       _tstruct                                                              \
+       return __event_align;                                                 \
+}
 
+#include TRACE_INCLUDE(TRACE_INCLUDE_FILE)
 
 /*
  * Stage 8 of the trace events.
@@ -549,12 +615,16 @@ static inline size_t __event_get_align__##_name(_proto)                         \
 #undef TP_STRUCT__entry
 #define TP_STRUCT__entry(args...) args
 
-#undef DECLARE_EVENT_CLASS
-#define DECLARE_EVENT_CLASS(_name, _proto, _args, _tstruct, _assign, _print)  \
+#undef LTTNG_DECLARE_EVENT_CLASS_NOARGS
+#define LTTNG_DECLARE_EVENT_CLASS_NOARGS(_name, _locvar, _code, _tstruct, _assign, _print)  \
 struct __event_typemap__##_name {                                            \
        _tstruct                                                              \
 };
 
+#undef LTTNG_DECLARE_EVENT_CLASS
+#define LTTNG_DECLARE_EVENT_CLASS(_name, _proto, _args, _locvar, _code, _tstruct, _assign, _print)  \
+       LTTNG_DECLARE_EVENT_CLASS_NOARGS(_name, _locvar, _code, _tstruct, _assign, _print)
+
 #include TRACE_INCLUDE(TRACE_INCLUDE_FILE)
 
 
@@ -732,6 +802,12 @@ __assign_##dest:                                                   \
 #undef TP_fast_assign
 #define TP_fast_assign(args...) args
 
+#undef TP_locvar
+#define TP_locvar(...) __VA_ARGS__
+
+#undef TP_code
+#define TP_code(...)   __VA_ARGS__
+
 /*
  * For state dump, check that "session" argument (mandatory) matches the
  * session this event belongs to. Ensures that we write state dump data only
@@ -748,23 +824,23 @@ __assign_##dest:                                                  \
  * __dynamic_array_enc_ext_2() and tp_memcpy_dyn_2(), which are the
  * worse case, needing 2 entries per field.
  */
-#undef DECLARE_EVENT_CLASS
-#define DECLARE_EVENT_CLASS(_name, _proto, _args, _tstruct, _assign, _print)  \
+#undef LTTNG_DECLARE_EVENT_CLASS
+#define LTTNG_DECLARE_EVENT_CLASS(_name, _proto, _args, _locvar, _code, _tstruct, _assign, _print) \
 static void __event_probe__##_name(void *__data, _proto)                     \
 {                                                                            \
+       struct probe_local_vars { _locvar };                                  \
        struct lttng_event *__event = __data;                                 \
        struct lttng_channel *__chan = __event->chan;                         \
        struct lib_ring_buffer_ctx __ctx;                                     \
        size_t __event_len, __event_align;                                    \
-       size_t __dynamic_len_idx = 0;                                         \
-       size_t __dynamic_len[2 * ARRAY_SIZE(__event_fields___##_name)];       \
-       struct __event_typemap__##_name __typemap;                            \
+       size_t __dynamic_len_idx __attribute__((unused)) = 0;                 \
+       size_t __dynamic_len[2 * ARRAY_SIZE(__event_fields___##_name)] __attribute__((unused)); \
+       struct __event_typemap__##_name __typemap __attribute__((unused));    \
        int __ret;                                                            \
+       struct probe_local_vars __tp_locvar;                                  \
+       struct probe_local_vars *tp_locvar __attribute__((unused)) =          \
+                       &__tp_locvar;                                         \
                                                                              \
-       if (0) {                                                              \
-               (void) __dynamic_len_idx;       /* don't warn if unused */    \
-               (void) __typemap;               /* don't warn if unused */    \
-       }                                                                     \
        if (!_TP_SESSION_CHECK(session, __chan->session))                     \
                return;                                                       \
        if (unlikely(!ACCESS_ONCE(__chan->session->active)))                  \
@@ -773,8 +849,10 @@ static void __event_probe__##_name(void *__data, _proto)                 \
                return;                                                       \
        if (unlikely(!ACCESS_ONCE(__event->enabled)))                         \
                return;                                                       \
-       __event_len = __event_get_size__##_name(__dynamic_len, _args);        \
-       __event_align = __event_get_align__##_name(_args);                    \
+       _code                                                                 \
+       __event_len = __event_get_size__##_name(__dynamic_len, tp_locvar,     \
+                               _args);                                       \
+       __event_align = __event_get_align__##_name(tp_locvar, _args);         \
        lib_ring_buffer_ctx_init(&__ctx, __chan->chan, __event, __event_len,  \
                                 __event_align, -1);                          \
        __ret = __chan->ops->event_reserve(&__ctx, __event->id);              \
@@ -788,15 +866,22 @@ static void __event_probe__##_name(void *__data, _proto)                \
        _assign                                                               \
 }
 
-#undef DECLARE_EVENT_CLASS_NOARGS
-#define DECLARE_EVENT_CLASS_NOARGS(_name, _tstruct, _assign, _print)         \
+#undef LTTNG_DECLARE_EVENT_CLASS_NOARGS
+#define LTTNG_DECLARE_EVENT_CLASS_NOARGS(_name, _locvar, _code, _tstruct, _assign, _print) \
 static void __event_probe__##_name(void *__data)                             \
 {                                                                            \
+       struct probe_local_vars { _locvar };                                  \
        struct lttng_event *__event = __data;                                 \
        struct lttng_channel *__chan = __event->chan;                         \
        struct lib_ring_buffer_ctx __ctx;                                     \
        size_t __event_len, __event_align;                                    \
+       size_t __dynamic_len_idx __attribute__((unused)) = 0;                 \
+       size_t __dynamic_len[2 * ARRAY_SIZE(__event_fields___##_name)] __attribute__((unused)); \
+       struct __event_typemap__##_name __typemap __attribute__((unused));    \
        int __ret;                                                            \
+       struct probe_local_vars __tp_locvar;                                  \
+       struct probe_local_vars *tp_locvar __attribute__((unused)) =          \
+                       &__tp_locvar;                                         \
                                                                              \
        if (!_TP_SESSION_CHECK(session, __chan->session))                     \
                return;                                                       \
@@ -806,8 +891,9 @@ static void __event_probe__##_name(void *__data)                          \
                return;                                                       \
        if (unlikely(!ACCESS_ONCE(__event->enabled)))                         \
                return;                                                       \
-       __event_len = 0;                                                      \
-       __event_align = 1;                                                    \
+       _code                                                                 \
+       __event_len = __event_get_size__##_name(__dynamic_len, tp_locvar);    \
+       __event_align = __event_get_align__##_name(tp_locvar);                \
        lib_ring_buffer_ctx_init(&__ctx, __chan->chan, __event, __event_len,  \
                                 __event_align, -1);                          \
        __ret = __chan->ops->event_reserve(&__ctx, __event->id);              \
LTTng 2.0/0.x modules
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