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1 | /* This file is part of the Linux Trace Toolkit viewer |
2 | * Copyright (C) 2003-2004 Michel Dagenais |
3 | * |
4 | * This program is free software; you can redistribute it and/or modify |
5 | * it under the terms of the GNU General Public License Version 2 as |
6 | * published by the Free Software Foundation; |
7 | * |
8 | * This program is distributed in the hope that it will be useful, |
9 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
11 | * GNU General Public License for more details. |
12 | * |
13 | * You should have received a copy of the GNU General Public License |
14 | * along with this program; if not, write to the Free Software |
15 | * Foundation, Inc., 59 Temple Place - Suite 330, Boston, |
16 | * MA 02111-1307, USA. |
17 | */ |
18 | |
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19 | #ifndef PROCESSTRACE_H |
20 | #define PROCESSTRACE_H |
21 | |
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22 | #include <lttv/traceset.h> |
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23 | #include <lttv/attribute.h> |
24 | #include <lttv/hook.h> |
25 | #include <ltt/ltt.h> |
26 | |
27 | /* This is the generic part of trace processing. All events within a |
28 | certain time interval are accessed and processing hooks are called for |
29 | each. The events are examined in monotonically increasing time to more |
30 | closely follow the traced system behavior. |
31 | |
32 | Hooks are called at several different places during the processing: |
33 | before traceset, after traceset, check trace, before trace, after trace, |
34 | check tracefile, before tracefile, after tracefile, |
35 | check_event, before_event, before_event_by_id, |
36 | after_event, after_event_by_id. |
37 | |
38 | In each case the "check" hooks are called first to determine if further |
39 | processing of the trace, tracefile or event is wanted. Then, the before |
40 | hooks and the after hooks are called. The before hooks for a traceset |
41 | are called before those for the contained traces, which are called before |
42 | those for the contained tracefiles. The after hooks are called in reverse |
43 | order. The event hooks are called after all the before_tracefile hooks |
44 | and before all the after_tracefile hooks. |
45 | |
46 | The hooks receive two arguments, the hook_data and call_data. The hook_data |
47 | is specified when the hook is registered and typically links to the |
48 | object registering the hook (e.g. a graphical events viewer). The call_data |
49 | must contain all the context related to the call. The traceset hooks receive |
50 | the LttvTracesetContext provided by the caller. The trace hooks receive |
51 | the LttvTraceContext from the traces array in the LttvTracesetContext. |
52 | The tracefile and event hooks receive the LttvTracefileContext from |
53 | the tracefiles array in the LttvTraceContext. The LttEvent and LttTime |
54 | fields in the tracefile context are set to the current event and current |
55 | event time before calling the event hooks. No other context field is |
56 | modified. |
57 | |
58 | The contexts in the traces and tracefiles arrays must be allocated by |
59 | the caller, either before the call or during the before hooks of the |
60 | enclosing traceset or trace. The order in the traces array must |
61 | correspond to the lttv_traceset_get function. The order in the tracefiles |
62 | arrays must correspond to the ltt_trace_control_tracefile_get and |
63 | ltt_trace_per_cpu_tracefile_get functions. The traceset, trace and |
64 | tracefile contexts may be subtyped as needed. Indeed, both the contexts |
65 | and the hooks are defined by the caller. */ |
66 | |
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67 | |
68 | typedef struct _LttvTracesetContext LttvTracesetContext; |
69 | typedef struct _LttvTracesetContextClass LttvTracesetContextClass; |
70 | |
71 | typedef struct _LttvTraceContext LttvTraceContext; |
72 | typedef struct _LttvTraceContextClass LttvTraceContextClass; |
73 | |
74 | typedef struct _LttvTracefileContext LttvTracefileContext; |
75 | typedef struct _LttvTracefileContextClass LttvTracefileContextClass; |
76 | |
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77 | typedef struct _LttvTracesetContextPosition LttvTracesetContextPosition; |
78 | typedef struct _LttvTraceContextPosition LttvTraceContextPosition; |
79 | |
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80 | #define LTTV_TRACESET_CONTEXT_TYPE (lttv_traceset_context_get_type ()) |
81 | #define LTTV_TRACESET_CONTEXT(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), LTTV_TRACESET_CONTEXT_TYPE, LttvTracesetContext)) |
82 | #define LTTV_TRACESET_CONTEXT_CLASS(vtable) (G_TYPE_CHECK_CLASS_CAST ((vtable), LTTV_TRACESET_CONTEXT_TYPE, LttvTracesetContextClass)) |
83 | #define LTTV_IS_TRACESET_CONTEXT(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), LTTV_TRACESET_CONTEXT_TYPE)) |
84 | #define LTTV_IS_TRACESET_CONTEXT_CLASS(vtable) (G_TYPE_CHECK_CLASS_TYPE ((vtable), LTTV_TRACESET_CONTEXT_TYPE)) |
85 | #define LTTV_TRACESET_CONTEXT_GET_CLASS(inst) (G_TYPE_INSTANCE_GET_CLASS ((inst), LTTV_TRACESET_CONTEXT_TYPE, LttvTracesetContextClass)) |
86 | |
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87 | struct _LttvTracesetContext { |
88 | GObject parent; |
89 | |
90 | LttvTraceset *ts; |
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91 | LttvTraceContext **traces; |
92 | LttvAttribute *a; |
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93 | LttvAttribute *ts_a; |
8697a616 |
94 | TimeInterval time_span; |
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95 | GTree *pqueue; |
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96 | }; |
97 | |
98 | struct _LttvTracesetContextClass { |
99 | GObjectClass parent; |
100 | |
101 | void (*init) (LttvTracesetContext *self, LttvTraceset *ts); |
102 | void (*fini) (LttvTracesetContext *self); |
103 | LttvTracesetContext* (*new_traceset_context) (LttvTracesetContext *self); |
104 | LttvTraceContext* (*new_trace_context) (LttvTracesetContext *self); |
105 | LttvTracefileContext* (*new_tracefile_context) (LttvTracesetContext *self); |
106 | }; |
107 | |
108 | GType lttv_traceset_context_get_type (void); |
109 | |
110 | void lttv_context_init(LttvTracesetContext *self, LttvTraceset *ts); |
111 | |
112 | void lttv_context_fini(LttvTracesetContext *self); |
113 | |
114 | LttvTracesetContext * |
115 | lttv_context_new_traceset_context(LttvTracesetContext *self); |
116 | |
117 | LttvTraceContext * |
118 | lttv_context_new_trace_context(LttvTracesetContext *self); |
119 | |
120 | LttvTracefileContext * |
121 | lttv_context_new_tracefile_context(LttvTracesetContext *self); |
122 | |
123 | |
124 | #define LTTV_TRACE_CONTEXT_TYPE (lttv_trace_context_get_type ()) |
125 | #define LTTV_TRACE_CONTEXT(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), LTTV_TRACE_CONTEXT_TYPE, LttvTraceContext)) |
126 | #define LTTV_TRACE_CONTEXT_CLASS(vtable) (G_TYPE_CHECK_CLASS_CAST ((vtable), LTTV_TRACE_CONTEXT_TYPE, LttvTraceContextClass)) |
127 | #define LTTV_IS_TRACE_CONTEXT(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), LTTV_TRACE_CONTEXT_TYPE)) |
128 | #define LTTV_IS_TRACE_CONTEXT_CLASS(vtable) (G_TYPE_CHECK_CLASS_TYPE ((vtable), LTTV_TRACE_CONTEXT_TYPE)) |
129 | #define LTTV_TRACE_CONTEXT_GET_CLASS(inst) (G_TYPE_INSTANCE_GET_CLASS ((inst), LTTV_TRACE_CONTEXT_TYPE, LttvTraceContextClass)) |
130 | |
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131 | struct _LttvTraceContext { |
132 | GObject parent; |
133 | |
134 | LttvTracesetContext *ts_context; |
135 | guint index; /* in ts_context->traces */ |
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136 | LttTrace *t; |
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137 | LttvTrace *vt; |
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138 | LttvTracefileContext **tracefiles; |
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139 | LttvAttribute *a; |
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140 | LttvAttribute *t_a; |
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141 | }; |
142 | |
143 | struct _LttvTraceContextClass { |
144 | GObjectClass parent; |
145 | }; |
146 | |
147 | GType lttv_trace_context_get_type (void); |
148 | |
149 | #define LTTV_TRACEFILE_CONTEXT_TYPE (lttv_tracefile_context_get_type ()) |
150 | #define LTTV_TRACEFILE_CONTEXT(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), LTTV_TRACEFILE_CONTEXT_TYPE, LttvTracefileContext)) |
151 | #define LTTV_TRACEFILE_CONTEXT_CLASS(vtable) (G_TYPE_CHECK_CLASS_CAST ((vtable), LTTV_TRACEFILE_CONTEXT_TYPE, LttvTracefileContextClass)) |
152 | #define LTTV_IS_TRACEFILE_CONTEXT(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), LTTV_TRACEFILE_CONTEXT_TYPE)) |
153 | #define LTTV_IS_TRACEFILE_CONTEXT_CLASS(vtable) (G_TYPE_CHECK_CLASS_TYPE ((vtable), LTTV_TRACEFILE_CONTEXT_TYPE)) |
154 | #define LTTV_TRACEFILE_CONTEXT_GET_CLASS(inst) (G_TYPE_INSTANCE_GET_CLASS ((inst), LTTV_TRACEFILE_CONTEXT_TYPE, LttvTracefileContextClass)) |
155 | |
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156 | struct _LttvTracefileContext { |
157 | GObject parent; |
158 | |
159 | LttvTraceContext *t_context; |
160 | gboolean control; |
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161 | guint index; /* in ts_context->tracefiles */ |
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162 | LttTracefile *tf; |
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163 | LttEvent *e; |
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164 | LttvHooks *event; |
165 | LttvHooksById *event_by_id; |
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166 | LttTime timestamp; |
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167 | LttvAttribute *a; |
168 | }; |
169 | |
170 | struct _LttvTracefileContextClass { |
171 | GObjectClass parent; |
172 | }; |
173 | |
174 | GType lttv_tracefile_context_get_type (void); |
175 | |
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176 | /* Run through the events in a traceset in sorted order calling all the |
177 | hooks appropriately. It starts at the current time and runs until end or |
178 | nb_events are processed. */ |
179 | |
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180 | void lttv_process_traceset(LttvTracesetContext *self, LttTime end, |
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181 | unsigned nb_events); |
182 | |
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183 | /* Save the complete tracefile information in the context */ |
184 | //void lttv_process_traceset_get_sync_data(LttvTracesetContext *self); |
185 | |
186 | /* Put all the tracefiles at the tracefile context position */ |
187 | void lttv_process_traceset_synchronize_tracefiles(LttvTracesetContext *self); |
188 | |
8697a616 |
189 | /* Process traceset can also be done in smaller pieces calling begin, |
190 | * then seek and middle repeatedly, and end. The middle function return the |
191 | * number of events processed. It will be smaller than nb_events if the end time |
192 | * or end position is reached. */ |
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193 | |
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194 | |
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195 | void lttv_process_traceset_begin(LttvTracesetContext *self, |
196 | LttvHooks *before_traceset, |
197 | LttvHooks *before_trace, |
198 | LttvHooks *before_tracefile, |
199 | LttvHooks *event, |
200 | LttvHooksById *event_by_id); |
201 | |
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202 | |
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203 | guint lttv_process_traceset_middle(LttvTracesetContext *self, |
204 | LttTime end, |
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205 | guint nb_events, |
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206 | const LttvTracesetContextPosition *end_position); |
207 | |
208 | void lttv_process_traceset_end(LttvTracesetContext *self, |
209 | LttvHooks *after_traceset, |
210 | LttvHooks *after_trace, |
211 | LttvHooks *after_tracefile, |
212 | LttvHooks *event, |
213 | LttvHooksById *event_by_id); |
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214 | |
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215 | |
216 | void lttv_process_traceset_seek_time(LttvTracesetContext *self, LttTime start); |
217 | |
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218 | gboolean lttv_process_traceset_seek_position(LttvTracesetContext *self, |
219 | const LttvTracesetContextPosition *pos); |
220 | |
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221 | void lttv_process_trace_seek_time(LttvTraceContext *self, LttTime start); |
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222 | |
223 | void lttv_traceset_context_add_hooks(LttvTracesetContext *self, |
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224 | LttvHooks *before_traceset, |
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225 | LttvHooks *before_trace, |
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226 | LttvHooks *before_tracefile, |
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227 | LttvHooks *event, |
228 | LttvHooksById *event_by_id); |
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229 | |
230 | void lttv_traceset_context_remove_hooks(LttvTracesetContext *self, |
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231 | LttvHooks *after_traceset, |
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232 | LttvHooks *after_trace, |
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233 | LttvHooks *after_tracefile, |
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234 | LttvHooks *event, |
235 | LttvHooksById *event_by_id); |
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236 | |
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237 | void lttv_trace_context_add_hooks(LttvTraceContext *self, |
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238 | LttvHooks *before_trace, |
239 | LttvHooks *before_tracefile, |
240 | LttvHooks *event, |
241 | LttvHooksById *event_by_id); |
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242 | |
243 | void lttv_trace_context_remove_hooks(LttvTraceContext *self, |
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244 | LttvHooks *after_trace, |
245 | LttvHooks *after_tracefile, |
246 | LttvHooks *event, |
247 | LttvHooksById *event_by_id); |
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248 | |
249 | void lttv_tracefile_context_add_hooks(LttvTracefileContext *self, |
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250 | LttvHooks *before_tracefile, |
251 | LttvHooks *event, |
252 | LttvHooksById *event_by_id); |
253 | |
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254 | |
255 | void lttv_tracefile_context_remove_hooks(LttvTracefileContext *self, |
8697a616 |
256 | LttvHooks *after_tracefile, |
257 | LttvHooks *event, |
258 | LttvHooksById *event_by_id); |
259 | |
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260 | |
261 | void lttv_tracefile_context_add_hooks_by_id(LttvTracefileContext *self, |
262 | unsigned i, |
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263 | LttvHooks *event_by_id); |
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264 | |
265 | void lttv_tracefile_context_remove_hooks_by_id(LttvTracefileContext *self, |
266 | unsigned i); |
267 | |
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268 | typedef struct _LttvTraceHook { |
269 | LttvHook h; |
270 | guint id; |
271 | LttField *f1; |
272 | LttField *f2; |
273 | LttField *f3; |
274 | } LttvTraceHook; |
275 | |
276 | |
277 | /* Search in the trace for the id of the named event type within the named |
278 | facility. Then, find the three (if non null) named fields. All that |
279 | information is then used to fill the LttvTraceHook structure. This |
280 | is useful to find the specific id for an event within a trace, for |
281 | registering a hook using this structure as event data; |
282 | it already contains the (up to three) needed fields handles. */ |
283 | |
284 | void lttv_trace_find_hook(LttTrace *t, char *facility, char *event_type, |
285 | char *field1, char *field2, char *field3, LttvHook h, LttvTraceHook *th); |
286 | |
2d262115 |
287 | LttvTracefileContext *lttv_traceset_context_get_current_tfc( |
288 | LttvTracesetContext *self); |
289 | |
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290 | |
291 | LttvTracesetContextPosition *lttv_traceset_context_position_new(); |
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292 | |
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293 | void lttv_traceset_context_position_save(const LttvTracesetContext *self, |
294 | LttvTracesetContextPosition *pos); |
295 | |
296 | void lttv_traceset_context_position_destroy(LttvTracesetContextPosition *pos); |
297 | |
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298 | void lttv_traceset_context_position_copy(LttvTracesetContextPosition *dest, |
299 | const LttvTracesetContextPosition *src); |
300 | |
8697a616 |
301 | gint lttv_traceset_context_pos_pos_compare( |
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302 | const LttvTracesetContextPosition *pos1, |
303 | const LttvTracesetContextPosition *pos2); |
8697a616 |
304 | |
305 | gint lttv_traceset_context_ctx_pos_compare(const LttvTracesetContext *self, |
8b0bbe19 |
306 | const LttvTracesetContextPosition *pos2); |
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307 | |
2d262115 |
308 | LttTime lttv_traceset_context_position_get_time( |
8b0bbe19 |
309 | const LttvTracesetContextPosition *pos); |
310 | |
00e74b69 |
311 | gboolean lttv_process_tracefile_seek_position(LttvTracefileContext *self, |
312 | const LttEventPosition *pos); |
313 | |
8b0bbe19 |
314 | |
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315 | #endif // PROCESSTRACE_H |