1 /* This file is part of the Linux Trace Toolkit viewer
2 * Copyright (C) 2009 Benjamin Poirier <benjamin.poirier@polymtl.ca>
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,
26 #include "sync_chain.h"
27 #include "event_processing_lttng_common.h"
29 #include "event_processing_lttng_null.h"
32 // Functions common to all processing modules
33 static void initProcessingLTTVNull(SyncState
* const syncState
, ...);
34 static void destroyProcessingLTTVNull(SyncState
* const syncState
);
36 static void finalizeProcessingLTTVNull(SyncState
* const syncState
);
38 // Functions specific to this module
39 static void registerProcessingLTTVNull() __attribute__((constructor (102)));
40 static gboolean
processEventLTTVNull(void* hookData
, void* callData
);
43 static ProcessingModule processingModuleLTTVNull
= {
45 .initProcessing
= &initProcessingLTTVNull
,
46 .destroyProcessing
= &destroyProcessingLTTVNull
,
47 .finalizeProcessing
= &finalizeProcessingLTTVNull
,
53 * Processing Module registering function
55 static void registerProcessingLTTVNull()
57 g_queue_push_tail(&processingModules
, &processingModuleLTTVNull
);
64 * Allocate and initialize data structures for synchronizing a traceset.
65 * Register event hooks.
68 * syncState: container for synchronization data.
69 * This function allocates these processingData members:
71 * traceSetContext: LttvTracesetContext*, set of LTTV traces
73 static void initProcessingLTTVNull(SyncState
* const syncState
, ...)
75 ProcessingDataLTTVNull
* processingData
;
78 processingData
= malloc(sizeof(ProcessingDataLTTVNull
));
79 syncState
->processingData
= processingData
;
80 va_start(ap
, syncState
);
81 processingData
->traceSetContext
= va_arg(ap
, LttvTracesetContext
*);
84 lttv_traceset_number(processingData
->traceSetContext
->ts
);
85 processingData
->hookListList
= g_array_sized_new(FALSE
, FALSE
,
86 sizeof(GArray
*), syncState
->traceNb
);
88 registerHooks(processingData
->hookListList
,
89 processingData
->traceSetContext
, &processEventLTTVNull
, syncState
,
90 syncState
->matchingModule
->canMatch
);
98 * syncState container for synchronization data.
100 static void finalizeProcessingLTTVNull(SyncState
* const syncState
)
107 * Unregister event hooks. Deallocate processingData.
110 * syncState: container for synchronization data.
111 * This function deallocates these members:
114 static void destroyProcessingLTTVNull(SyncState
* const syncState
)
116 ProcessingDataLTTVNull
* processingData
;
118 processingData
= (ProcessingDataLTTVNull
*) syncState
->processingData
;
120 if (processingData
== NULL
)
125 unregisterHooks(processingData
->hookListList
,
126 processingData
->traceSetContext
);
128 free(syncState
->processingData
);
129 syncState
->processingData
= NULL
;
134 * Lttv hook function that will be called for network events
137 * hookData: LttvTraceHook* for the type of event that generated the call
138 * callData: LttvTracefileContext* at the moment of the event
141 * FALSE Always returns FALSE, meaning to keep processing hooks for
144 static gboolean
processEventLTTVNull(void* hookData
, void* callData
)