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1 | /* This file is part of the Linux Trace Toolkit viewer |
2 | * Copyright (C) 2009 Benjamin Poirier <benjamin.poirier@polymtl.ca> | |
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 | ||
19 | #ifdef HAVE_CONFIG_H | |
20 | #include <config.h> | |
21 | #endif | |
22 | ||
23 | #include <stdlib.h> | |
24 | ||
2bd4b3e4 | 25 | #include "sync_chain.h" |
10341d26 | 26 | #include "event_processing_lttng_common.h" |
70407e86 | 27 | |
10341d26 | 28 | #include "event_processing_lttng_null.h" |
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29 | |
30 | ||
08365995 | 31 | // Functions common to all processing modules |
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32 | static void initProcessingLTTVNull(SyncState* const syncState, |
33 | LttvTracesetContext* const traceSetContext); | |
34 | static void destroyProcessingLTTVNull(SyncState* const syncState); | |
35 | ||
36 | static void finalizeProcessingLTTVNull(SyncState* const syncState); | |
37 | ||
38 | // Functions specific to this module | |
39 | static void registerProcessingLTTVNull() __attribute__((constructor (102))); | |
40 | static gboolean processEventLTTVNull(void* hookData, void* callData); | |
41 | ||
42 | ||
43 | static ProcessingModule processingModuleLTTVNull = { | |
44 | .name= "LTTV-null", | |
45 | .initProcessing= &initProcessingLTTVNull, | |
46 | .destroyProcessing= &destroyProcessingLTTVNull, | |
47 | .finalizeProcessing= &finalizeProcessingLTTVNull, | |
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48 | }; |
49 | ||
50 | ||
51 | ||
52 | /* | |
53 | * Processing Module registering function | |
54 | */ | |
55 | static void registerProcessingLTTVNull() | |
56 | { | |
57 | g_queue_push_tail(&processingModules, &processingModuleLTTVNull); | |
58 | ||
59 | createQuarks(); | |
60 | } | |
61 | ||
62 | ||
63 | /* | |
64 | * Allocate and initialize data structures for synchronizing a traceset. | |
65 | * Register event hooks. | |
66 | * | |
67 | * Args: | |
68 | * syncState: container for synchronization data. | |
69 | * This function allocates these processingData members: | |
70 | * hookListList | |
71 | * traceSetContext: set of LTTV traces | |
72 | */ | |
73 | static void initProcessingLTTVNull(SyncState* const syncState, | |
74 | LttvTracesetContext* const traceSetContext) | |
75 | { | |
76 | ProcessingDataLTTVNull* processingData; | |
77 | ||
78 | processingData= malloc(sizeof(ProcessingDataLTTVNull)); | |
79 | syncState->processingData= processingData; | |
80 | processingData->traceSetContext= traceSetContext; | |
81 | ||
82 | processingData->hookListList= g_array_sized_new(FALSE, FALSE, | |
83 | sizeof(GArray*), syncState->traceNb); | |
84 | ||
85 | registerHooks(processingData->hookListList, traceSetContext, | |
f6691532 BP |
86 | &processEventLTTVNull, syncState, |
87 | syncState->matchingModule->canMatch); | |
70407e86 BP |
88 | } |
89 | ||
90 | ||
91 | /* | |
92 | * Nothing to do | |
93 | * | |
94 | * Args: | |
95 | * syncState container for synchronization data. | |
96 | */ | |
97 | static void finalizeProcessingLTTVNull(SyncState* const syncState) | |
98 | { | |
99 | return; | |
100 | } | |
101 | ||
102 | ||
103 | /* | |
104 | * Unregister event hooks. Deallocate processingData. | |
105 | * | |
106 | * Args: | |
107 | * syncState: container for synchronization data. | |
108 | * This function deallocates these members: | |
109 | * hookListList | |
110 | */ | |
111 | static void destroyProcessingLTTVNull(SyncState* const syncState) | |
112 | { | |
113 | ProcessingDataLTTVNull* processingData; | |
114 | ||
115 | processingData= (ProcessingDataLTTVNull*) syncState->processingData; | |
116 | ||
117 | if (processingData == NULL) | |
118 | { | |
119 | return; | |
120 | } | |
121 | ||
122 | unregisterHooks(processingData->hookListList, | |
08365995 | 123 | processingData->traceSetContext); |
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124 | |
125 | free(syncState->processingData); | |
126 | syncState->processingData= NULL; | |
127 | } | |
128 | ||
129 | ||
130 | /* | |
131 | * Lttv hook function that will be called for network events | |
132 | * | |
133 | * Args: | |
134 | * hookData: LttvTraceHook* for the type of event that generated the call | |
135 | * callData: LttvTracefileContext* at the moment of the event | |
136 | * | |
137 | * Returns: | |
138 | * FALSE Always returns FALSE, meaning to keep processing hooks for | |
139 | * this event | |
140 | */ | |
141 | static gboolean processEventLTTVNull(void* hookData, void* callData) | |
142 | { | |
143 | return FALSE; | |
144 | } |