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1 | #ifndef PROCESSTRACE_H |
2 | #define PROCESSTRACE_H |
3 | |
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4 | #include <lttv/traceset.h> |
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5 | #include <lttv/attribute.h> |
6 | #include <lttv/hook.h> |
7 | #include <ltt/ltt.h> |
8 | |
9 | /* This is the generic part of trace processing. All events within a |
10 | certain time interval are accessed and processing hooks are called for |
11 | each. The events are examined in monotonically increasing time to more |
12 | closely follow the traced system behavior. |
13 | |
14 | Hooks are called at several different places during the processing: |
15 | before traceset, after traceset, check trace, before trace, after trace, |
16 | check tracefile, before tracefile, after tracefile, |
17 | check_event, before_event, before_event_by_id, |
18 | after_event, after_event_by_id. |
19 | |
20 | In each case the "check" hooks are called first to determine if further |
21 | processing of the trace, tracefile or event is wanted. Then, the before |
22 | hooks and the after hooks are called. The before hooks for a traceset |
23 | are called before those for the contained traces, which are called before |
24 | those for the contained tracefiles. The after hooks are called in reverse |
25 | order. The event hooks are called after all the before_tracefile hooks |
26 | and before all the after_tracefile hooks. |
27 | |
28 | The hooks receive two arguments, the hook_data and call_data. The hook_data |
29 | is specified when the hook is registered and typically links to the |
30 | object registering the hook (e.g. a graphical events viewer). The call_data |
31 | must contain all the context related to the call. The traceset hooks receive |
32 | the LttvTracesetContext provided by the caller. The trace hooks receive |
33 | the LttvTraceContext from the traces array in the LttvTracesetContext. |
34 | The tracefile and event hooks receive the LttvTracefileContext from |
35 | the tracefiles array in the LttvTraceContext. The LttEvent and LttTime |
36 | fields in the tracefile context are set to the current event and current |
37 | event time before calling the event hooks. No other context field is |
38 | modified. |
39 | |
40 | The contexts in the traces and tracefiles arrays must be allocated by |
41 | the caller, either before the call or during the before hooks of the |
42 | enclosing traceset or trace. The order in the traces array must |
43 | correspond to the lttv_traceset_get function. The order in the tracefiles |
44 | arrays must correspond to the ltt_trace_control_tracefile_get and |
45 | ltt_trace_per_cpu_tracefile_get functions. The traceset, trace and |
46 | tracefile contexts may be subtyped as needed. Indeed, both the contexts |
47 | and the hooks are defined by the caller. */ |
48 | |
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49 | |
50 | typedef struct _LttvTracesetContext LttvTracesetContext; |
51 | typedef struct _LttvTracesetContextClass LttvTracesetContextClass; |
52 | |
53 | typedef struct _LttvTraceContext LttvTraceContext; |
54 | typedef struct _LttvTraceContextClass LttvTraceContextClass; |
55 | |
56 | typedef struct _LttvTracefileContext LttvTracefileContext; |
57 | typedef struct _LttvTracefileContextClass LttvTracefileContextClass; |
58 | |
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59 | #define LTTV_TRACESET_CONTEXT_TYPE (lttv_traceset_context_get_type ()) |
60 | #define LTTV_TRACESET_CONTEXT(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), LTTV_TRACESET_CONTEXT_TYPE, LttvTracesetContext)) |
61 | #define LTTV_TRACESET_CONTEXT_CLASS(vtable) (G_TYPE_CHECK_CLASS_CAST ((vtable), LTTV_TRACESET_CONTEXT_TYPE, LttvTracesetContextClass)) |
62 | #define LTTV_IS_TRACESET_CONTEXT(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), LTTV_TRACESET_CONTEXT_TYPE)) |
63 | #define LTTV_IS_TRACESET_CONTEXT_CLASS(vtable) (G_TYPE_CHECK_CLASS_TYPE ((vtable), LTTV_TRACESET_CONTEXT_TYPE)) |
64 | #define LTTV_TRACESET_CONTEXT_GET_CLASS(inst) (G_TYPE_INSTANCE_GET_CLASS ((inst), LTTV_TRACESET_CONTEXT_TYPE, LttvTracesetContextClass)) |
65 | |
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66 | struct _LttvTracesetContext { |
67 | GObject parent; |
68 | |
69 | LttvTraceset *ts; |
70 | LttvHooks *before; |
71 | LttvHooks *after; |
72 | LttvTraceContext **traces; |
73 | LttvAttribute *a; |
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74 | LttvAttribute *ts_a; |
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75 | TimeInterval *Time_Span; |
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76 | }; |
77 | |
78 | struct _LttvTracesetContextClass { |
79 | GObjectClass parent; |
80 | |
81 | void (*init) (LttvTracesetContext *self, LttvTraceset *ts); |
82 | void (*fini) (LttvTracesetContext *self); |
83 | LttvTracesetContext* (*new_traceset_context) (LttvTracesetContext *self); |
84 | LttvTraceContext* (*new_trace_context) (LttvTracesetContext *self); |
85 | LttvTracefileContext* (*new_tracefile_context) (LttvTracesetContext *self); |
86 | }; |
87 | |
88 | GType lttv_traceset_context_get_type (void); |
89 | |
90 | void lttv_context_init(LttvTracesetContext *self, LttvTraceset *ts); |
91 | |
92 | void lttv_context_fini(LttvTracesetContext *self); |
93 | |
94 | LttvTracesetContext * |
95 | lttv_context_new_traceset_context(LttvTracesetContext *self); |
96 | |
97 | LttvTraceContext * |
98 | lttv_context_new_trace_context(LttvTracesetContext *self); |
99 | |
100 | LttvTracefileContext * |
101 | lttv_context_new_tracefile_context(LttvTracesetContext *self); |
102 | |
103 | |
104 | #define LTTV_TRACE_CONTEXT_TYPE (lttv_trace_context_get_type ()) |
105 | #define LTTV_TRACE_CONTEXT(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), LTTV_TRACE_CONTEXT_TYPE, LttvTraceContext)) |
106 | #define LTTV_TRACE_CONTEXT_CLASS(vtable) (G_TYPE_CHECK_CLASS_CAST ((vtable), LTTV_TRACE_CONTEXT_TYPE, LttvTraceContextClass)) |
107 | #define LTTV_IS_TRACE_CONTEXT(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), LTTV_TRACE_CONTEXT_TYPE)) |
108 | #define LTTV_IS_TRACE_CONTEXT_CLASS(vtable) (G_TYPE_CHECK_CLASS_TYPE ((vtable), LTTV_TRACE_CONTEXT_TYPE)) |
109 | #define LTTV_TRACE_CONTEXT_GET_CLASS(inst) (G_TYPE_INSTANCE_GET_CLASS ((inst), LTTV_TRACE_CONTEXT_TYPE, LttvTraceContextClass)) |
110 | |
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111 | struct _LttvTraceContext { |
112 | GObject parent; |
113 | |
114 | LttvTracesetContext *ts_context; |
115 | guint index; /* in ts_context->traces */ |
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116 | LttTrace *t; |
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117 | LttvTrace *vt; |
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118 | LttvHooks *check; |
119 | LttvHooks *before; |
120 | LttvHooks *after; |
121 | LttvTracefileContext **control_tracefiles; |
122 | LttvTracefileContext **per_cpu_tracefiles; |
123 | LttvAttribute *a; |
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124 | LttvAttribute *t_a; |
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125 | }; |
126 | |
127 | struct _LttvTraceContextClass { |
128 | GObjectClass parent; |
129 | }; |
130 | |
131 | GType lttv_trace_context_get_type (void); |
132 | |
133 | #define LTTV_TRACEFILE_CONTEXT_TYPE (lttv_tracefile_context_get_type ()) |
134 | #define LTTV_TRACEFILE_CONTEXT(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), LTTV_TRACEFILE_CONTEXT_TYPE, LttvTracefileContext)) |
135 | #define LTTV_TRACEFILE_CONTEXT_CLASS(vtable) (G_TYPE_CHECK_CLASS_CAST ((vtable), LTTV_TRACEFILE_CONTEXT_TYPE, LttvTracefileContextClass)) |
136 | #define LTTV_IS_TRACEFILE_CONTEXT(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), LTTV_TRACEFILE_CONTEXT_TYPE)) |
137 | #define LTTV_IS_TRACEFILE_CONTEXT_CLASS(vtable) (G_TYPE_CHECK_CLASS_TYPE ((vtable), LTTV_TRACEFILE_CONTEXT_TYPE)) |
138 | #define LTTV_TRACEFILE_CONTEXT_GET_CLASS(inst) (G_TYPE_INSTANCE_GET_CLASS ((inst), LTTV_TRACEFILE_CONTEXT_TYPE, LttvTracefileContextClass)) |
139 | |
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140 | struct _LttvTracefileContext { |
141 | GObject parent; |
142 | |
143 | LttvTraceContext *t_context; |
144 | gboolean control; |
145 | guint index; /* in ts_context->control/per_cpu_tracefiles */ |
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146 | LttTracefile *tf; |
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147 | LttvHooks *check; |
148 | LttvHooks *before; |
149 | LttvHooks *after; |
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150 | LttEvent *e; |
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151 | LttvHooks *check_event; |
152 | LttvHooks *before_event; |
153 | LttvHooksById *before_event_by_id; |
154 | LttvHooks *after_event; |
155 | LttvHooksById *after_event_by_id; |
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156 | LttTime timestamp; |
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157 | LttvAttribute *a; |
158 | }; |
159 | |
160 | struct _LttvTracefileContextClass { |
161 | GObjectClass parent; |
162 | }; |
163 | |
164 | GType lttv_tracefile_context_get_type (void); |
165 | |
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166 | void lttv_process_traceset(LttvTracesetContext *self, LttTime end, |
167 | unsigned maxNumEvents); |
168 | |
169 | void lttv_process_traceset_seek_time(LttvTracesetContext *self, LttTime start); |
170 | |
171 | void lttv_process_trace_seek_time(LttvTraceContext *self, LttTime start); |
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172 | |
173 | void lttv_traceset_context_add_hooks(LttvTracesetContext *self, |
174 | LttvHooks *before_traceset, |
175 | LttvHooks *after_traceset, |
176 | LttvHooks *check_trace, |
177 | LttvHooks *before_trace, |
178 | LttvHooks *after_trace, |
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179 | LttvHooks *check_tracefile, |
180 | LttvHooks *before_tracefile, |
181 | LttvHooks *after_tracefile, |
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182 | LttvHooks *check_event, |
183 | LttvHooks *before_event, |
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184 | LttvHooks *after_event); |
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185 | |
186 | void lttv_traceset_context_remove_hooks(LttvTracesetContext *self, |
187 | LttvHooks *before_traceset, |
188 | LttvHooks *after_traceset, |
189 | LttvHooks *check_trace, |
190 | LttvHooks *before_trace, |
191 | LttvHooks *after_trace, |
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192 | LttvHooks *check_tracefile, |
193 | LttvHooks *before_tracefile, |
194 | LttvHooks *after_tracefile, |
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195 | LttvHooks *check_event, |
196 | LttvHooks *before_event, |
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197 | LttvHooks *after_event); |
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198 | |
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199 | void lttv_trace_context_add_hooks(LttvTraceContext *self, |
200 | LttvHooks *check_trace, |
201 | LttvHooks *before_trace, |
202 | LttvHooks *after_trace); |
203 | |
204 | void lttv_trace_context_remove_hooks(LttvTraceContext *self, |
205 | LttvHooks *check_trace, |
206 | LttvHooks *before_trace, |
207 | LttvHooks *after_trace); |
208 | |
209 | void lttv_tracefile_context_add_hooks(LttvTracefileContext *self, |
210 | LttvHooks *check_tracefile, |
211 | LttvHooks *before_tracefile, |
212 | LttvHooks *after_tracefile, |
213 | LttvHooks *check_event, |
214 | LttvHooks *before_event, |
215 | LttvHooks *after_event); |
216 | |
217 | void lttv_tracefile_context_remove_hooks(LttvTracefileContext *self, |
218 | LttvHooks *check_tracefile, |
219 | LttvHooks *before_tracefile, |
220 | LttvHooks *after_tracefile, |
221 | LttvHooks *check_event, |
222 | LttvHooks *before_event, |
223 | LttvHooks *after_event); |
224 | |
225 | void lttv_tracefile_context_add_hooks_by_id(LttvTracefileContext *self, |
226 | unsigned i, |
227 | LttvHooks *before_event_by_id, |
228 | LttvHooks *after_event_by_id); |
229 | |
230 | void lttv_tracefile_context_remove_hooks_by_id(LttvTracefileContext *self, |
231 | unsigned i); |
232 | |
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233 | typedef struct _LttvTraceHook { |
234 | LttvHook h; |
235 | guint id; |
236 | LttField *f1; |
237 | LttField *f2; |
238 | LttField *f3; |
239 | } LttvTraceHook; |
240 | |
241 | |
242 | /* Search in the trace for the id of the named event type within the named |
243 | facility. Then, find the three (if non null) named fields. All that |
244 | information is then used to fill the LttvTraceHook structure. This |
245 | is useful to find the specific id for an event within a trace, for |
246 | registering a hook using this structure as event data; |
247 | it already contains the (up to three) needed fields handles. */ |
248 | |
249 | void lttv_trace_find_hook(LttTrace *t, char *facility, char *event_type, |
250 | char *field1, char *field2, char *field3, LttvHook h, LttvTraceHook *th); |
251 | |
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252 | #endif // PROCESSTRACE_H |