1 /* This file is part of the Linux Trace Toolkit viewer
2 * Copyright (C) 2003-2004 Michel Dagenais
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;
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.
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,
19 #ifndef PROCESSTRACE_H
20 #define PROCESSTRACE_H
22 #include <lttv/traceset.h>
23 #include <lttv/attribute.h>
24 #include <lttv/hook.h>
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.
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.
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.
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
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. */
68 typedef struct _LttvTracesetContext LttvTracesetContext
;
69 typedef struct _LttvTracesetContextClass LttvTracesetContextClass
;
71 typedef struct _LttvTraceContext LttvTraceContext
;
72 typedef struct _LttvTraceContextClass LttvTraceContextClass
;
74 typedef struct _LttvTracefileContext LttvTracefileContext
;
75 typedef struct _LttvTracefileContextClass LttvTracefileContextClass
;
77 #define LTTV_TRACESET_CONTEXT_TYPE (lttv_traceset_context_get_type ())
78 #define LTTV_TRACESET_CONTEXT(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), LTTV_TRACESET_CONTEXT_TYPE, LttvTracesetContext))
79 #define LTTV_TRACESET_CONTEXT_CLASS(vtable) (G_TYPE_CHECK_CLASS_CAST ((vtable), LTTV_TRACESET_CONTEXT_TYPE, LttvTracesetContextClass))
80 #define LTTV_IS_TRACESET_CONTEXT(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), LTTV_TRACESET_CONTEXT_TYPE))
81 #define LTTV_IS_TRACESET_CONTEXT_CLASS(vtable) (G_TYPE_CHECK_CLASS_TYPE ((vtable), LTTV_TRACESET_CONTEXT_TYPE))
82 #define LTTV_TRACESET_CONTEXT_GET_CLASS(inst) (G_TYPE_INSTANCE_GET_CLASS ((inst), LTTV_TRACESET_CONTEXT_TYPE, LttvTracesetContextClass))
84 struct _LttvTracesetContext
{
90 LttvTraceContext
**traces
;
93 TimeInterval
*Time_Span
;
97 struct _LttvTracesetContextClass
{
100 void (*init
) (LttvTracesetContext
*self
, LttvTraceset
*ts
);
101 void (*fini
) (LttvTracesetContext
*self
);
102 LttvTracesetContext
* (*new_traceset_context
) (LttvTracesetContext
*self
);
103 LttvTraceContext
* (*new_trace_context
) (LttvTracesetContext
*self
);
104 LttvTracefileContext
* (*new_tracefile_context
) (LttvTracesetContext
*self
);
107 GType
lttv_traceset_context_get_type (void);
109 void lttv_context_init(LttvTracesetContext
*self
, LttvTraceset
*ts
);
111 void lttv_context_fini(LttvTracesetContext
*self
);
113 LttvTracesetContext
*
114 lttv_context_new_traceset_context(LttvTracesetContext
*self
);
117 lttv_context_new_trace_context(LttvTracesetContext
*self
);
119 LttvTracefileContext
*
120 lttv_context_new_tracefile_context(LttvTracesetContext
*self
);
123 #define LTTV_TRACE_CONTEXT_TYPE (lttv_trace_context_get_type ())
124 #define LTTV_TRACE_CONTEXT(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), LTTV_TRACE_CONTEXT_TYPE, LttvTraceContext))
125 #define LTTV_TRACE_CONTEXT_CLASS(vtable) (G_TYPE_CHECK_CLASS_CAST ((vtable), LTTV_TRACE_CONTEXT_TYPE, LttvTraceContextClass))
126 #define LTTV_IS_TRACE_CONTEXT(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), LTTV_TRACE_CONTEXT_TYPE))
127 #define LTTV_IS_TRACE_CONTEXT_CLASS(vtable) (G_TYPE_CHECK_CLASS_TYPE ((vtable), LTTV_TRACE_CONTEXT_TYPE))
128 #define LTTV_TRACE_CONTEXT_GET_CLASS(inst) (G_TYPE_INSTANCE_GET_CLASS ((inst), LTTV_TRACE_CONTEXT_TYPE, LttvTraceContextClass))
130 struct _LttvTraceContext
{
133 LttvTracesetContext
*ts_context
;
134 guint index
; /* in ts_context->traces */
140 LttvTracefileContext
**control_tracefiles
;
141 LttvTracefileContext
**per_cpu_tracefiles
;
146 struct _LttvTraceContextClass
{
150 GType
lttv_trace_context_get_type (void);
152 #define LTTV_TRACEFILE_CONTEXT_TYPE (lttv_tracefile_context_get_type ())
153 #define LTTV_TRACEFILE_CONTEXT(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), LTTV_TRACEFILE_CONTEXT_TYPE, LttvTracefileContext))
154 #define LTTV_TRACEFILE_CONTEXT_CLASS(vtable) (G_TYPE_CHECK_CLASS_CAST ((vtable), LTTV_TRACEFILE_CONTEXT_TYPE, LttvTracefileContextClass))
155 #define LTTV_IS_TRACEFILE_CONTEXT(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), LTTV_TRACEFILE_CONTEXT_TYPE))
156 #define LTTV_IS_TRACEFILE_CONTEXT_CLASS(vtable) (G_TYPE_CHECK_CLASS_TYPE ((vtable), LTTV_TRACEFILE_CONTEXT_TYPE))
157 #define LTTV_TRACEFILE_CONTEXT_GET_CLASS(inst) (G_TYPE_INSTANCE_GET_CLASS ((inst), LTTV_TRACEFILE_CONTEXT_TYPE, LttvTracefileContextClass))
159 struct _LttvTracefileContext
{
162 LttvTraceContext
*t_context
;
164 guint index
; /* in ts_context->control/per_cpu_tracefiles */
170 LttvHooks
*check_event
;
171 LttvHooks
*before_event
;
172 LttvHooksById
*before_event_by_id
;
173 LttvHooks
*after_event
;
174 LttvHooksById
*after_event_by_id
;
179 struct _LttvTracefileContextClass
{
183 GType
lttv_tracefile_context_get_type (void);
185 /* Run through the events in a traceset in sorted order calling all the
186 hooks appropriately. It starts at the current time and runs until end or
187 nb_events are processed. */
189 void lttv_process_traceset(LttvTracesetContext
*self
, LttTime end
,
192 /* Process traceset can also be done in smaller pieces calling begin, middle
193 repeatedly, and end. The middle function return the number of events
194 processed. It may be larger than nb_events if several events have the
195 same timestamp. It will be smaller than nb_events if the end time
198 void lttv_process_traceset_begin(LttvTracesetContext
*self
, LttTime end
);
200 guint
lttv_process_traceset_middle(LttvTracesetContext
*self
, LttTime end
,
203 void lttv_process_traceset_end(LttvTracesetContext
*self
);
206 void lttv_process_traceset_seek_time(LttvTracesetContext
*self
, LttTime start
);
208 void lttv_process_trace_seek_time(LttvTraceContext
*self
, LttTime start
);
210 void lttv_traceset_context_add_hooks(LttvTracesetContext
*self
,
211 LttvHooks
*before_traceset
,
212 LttvHooks
*after_traceset
,
213 LttvHooks
*check_trace
,
214 LttvHooks
*before_trace
,
215 LttvHooks
*after_trace
,
216 LttvHooks
*check_tracefile
,
217 LttvHooks
*before_tracefile
,
218 LttvHooks
*after_tracefile
,
219 LttvHooks
*check_event
,
220 LttvHooks
*before_event
,
221 LttvHooks
*after_event
);
223 void lttv_traceset_context_remove_hooks(LttvTracesetContext
*self
,
224 LttvHooks
*before_traceset
,
225 LttvHooks
*after_traceset
,
226 LttvHooks
*check_trace
,
227 LttvHooks
*before_trace
,
228 LttvHooks
*after_trace
,
229 LttvHooks
*check_tracefile
,
230 LttvHooks
*before_tracefile
,
231 LttvHooks
*after_tracefile
,
232 LttvHooks
*check_event
,
233 LttvHooks
*before_event
,
234 LttvHooks
*after_event
);
236 void lttv_trace_context_add_hooks(LttvTraceContext
*self
,
237 LttvHooks
*check_trace
,
238 LttvHooks
*before_trace
,
239 LttvHooks
*after_trace
);
241 void lttv_trace_context_remove_hooks(LttvTraceContext
*self
,
242 LttvHooks
*check_trace
,
243 LttvHooks
*before_trace
,
244 LttvHooks
*after_trace
);
246 void lttv_tracefile_context_add_hooks(LttvTracefileContext
*self
,
247 LttvHooks
*check_tracefile
,
248 LttvHooks
*before_tracefile
,
249 LttvHooks
*after_tracefile
,
250 LttvHooks
*check_event
,
251 LttvHooks
*before_event
,
252 LttvHooks
*after_event
);
254 void lttv_tracefile_context_remove_hooks(LttvTracefileContext
*self
,
255 LttvHooks
*check_tracefile
,
256 LttvHooks
*before_tracefile
,
257 LttvHooks
*after_tracefile
,
258 LttvHooks
*check_event
,
259 LttvHooks
*before_event
,
260 LttvHooks
*after_event
);
262 void lttv_tracefile_context_add_hooks_by_id(LttvTracefileContext
*self
,
264 LttvHooks
*before_event_by_id
,
265 LttvHooks
*after_event_by_id
);
267 void lttv_tracefile_context_remove_hooks_by_id(LttvTracefileContext
*self
,
270 typedef struct _LttvTraceHook
{
279 /* Search in the trace for the id of the named event type within the named
280 facility. Then, find the three (if non null) named fields. All that
281 information is then used to fill the LttvTraceHook structure. This
282 is useful to find the specific id for an event within a trace, for
283 registering a hook using this structure as event data;
284 it already contains the (up to three) needed fields handles. */
286 void lttv_trace_find_hook(LttTrace
*t
, char *facility
, char *event_type
,
287 char *field1
, char *field2
, char *field3
, LttvHook h
, LttvTraceHook
*th
);
289 #endif // PROCESSTRACE_H