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1 | /* This file is part of the Linux Trace Toolkit viewer |
2 | * Copyright (C) 2003-2004 Xiangxiu Yang |
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 LTT_PRIVATE_H |
20 | #define LTT_PRIVATE_H |
21 | |
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22 | #include <glib.h> |
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23 | #include <sys/types.h> |
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24 | #include <ltt/ltt.h> |
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25 | |
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26 | #define LTT_PACKED_STRUCT __attribute__ ((packed)) |
27 | |
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28 | /* enumeration definition */ |
29 | |
30 | typedef enum _BuildinEvent{ |
31 | TRACE_FACILITY_LOAD = 0, |
32 | TRACE_BLOCK_START = 17, |
33 | TRACE_BLOCK_END = 18, |
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34 | TRACE_TIME_HEARTBEAT= 19 |
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35 | } BuildinEvent; |
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36 | |
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37 | |
38 | /* structure definition */ |
39 | |
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40 | typedef struct _FacilityLoad{ |
41 | char * name; |
42 | LttChecksum checksum; |
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43 | guint32 base_code; |
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44 | } LTT_PACKED_STRUCT FacilityLoad; |
45 | |
46 | typedef struct _BlockStart { |
47 | LttTime time; //Time stamp of this block |
48 | LttCycleCount cycle_count; //cycle count of the event |
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49 | guint32 block_id; //block id |
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50 | } LTT_PACKED_STRUCT BlockStart; |
51 | |
52 | typedef struct _BlockEnd { |
53 | LttTime time; //Time stamp of this block |
54 | LttCycleCount cycle_count; //cycle count of the event |
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55 | guint32 block_id; //block id |
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56 | } LTT_PACKED_STRUCT BlockEnd; |
57 | |
58 | typedef struct _TimeHeartbeat { |
59 | LttTime time; //Time stamp of this block |
60 | LttCycleCount cycle_count; //cycle count of the event |
61 | } LTT_PACKED_STRUCT TimeHeartbeat; |
62 | |
63 | |
64 | struct _LttType{ |
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65 | char * type_name; //type name if it is a named type |
66 | char * element_name; //elements name of the struct |
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67 | char * fmt; |
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68 | unsigned int size; |
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69 | LttTypeEnum type_class; //which type |
70 | char ** enum_strings; //for enum labels |
71 | struct _LttType ** element_type; //for array, sequence and struct |
72 | unsigned element_number; //the number of elements |
73 | //for enum, array, sequence and structure |
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74 | }; |
75 | |
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76 | struct _LttEventType{ |
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77 | char * name; |
78 | char * description; |
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79 | int index; //id of the event type within the facility |
80 | LttFacility * facility; //the facility that contains the event type |
81 | LttField * root_field; //root field |
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82 | unsigned int latest_block; //the latest block using the event type |
83 | unsigned int latest_event; //the latest event using the event type |
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84 | }; |
85 | |
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86 | struct _LttEvent{ |
87 | guint16 event_id; |
88 | guint32 time_delta; |
89 | LttTime event_time; |
90 | LttCycleCount event_cycle_count; |
91 | LttTracefile * tracefile; |
92 | void * data; //event data |
8d1e6362 |
93 | unsigned int which_block; //the current block of the event |
94 | unsigned int which_event; //the position of the event |
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95 | /* This is a workaround for fast position seek */ |
96 | void * last_event_pos; |
97 | |
98 | LttTime prev_block_end_time; //the end time of previous block |
99 | LttTime prev_event_time; //the time of the previous event |
100 | LttCycleCount pre_cycle_count; //previous cycle count of the event |
101 | int count; //the number of overflow of cycle count |
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102 | gint64 overflow_nsec; //precalculated nsec for overflows |
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103 | /* end of workaround */ |
104 | }; |
105 | |
106 | |
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107 | struct _LttField{ |
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108 | unsigned field_pos; //field position within its parent |
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109 | LttType * field_type; //field type, if it is root field |
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110 | //then it must be struct type |
111 | |
112 | off_t offset_root; //offset from the root, -1:uninitialized |
113 | short fixed_root; //offset fixed according to the root |
114 | //-1:uninitialized, 0:unfixed, 1:fixed |
115 | off_t offset_parent; //offset from the parent,-1:uninitialized |
116 | short fixed_parent; //offset fixed according to its parent |
117 | //-1:uninitialized, 0:unfixed, 1:fixed |
118 | // void * base_address; //base address of the field ???? |
119 | |
120 | int field_size; //>0: size of the field, |
121 | //0 : uncertain |
122 | //-1: uninitialize |
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123 | int sequ_number_size; //the size of unsigned used to save the |
124 | //number of elements in the sequence |
125 | |
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126 | int element_size; //the element size of the sequence |
127 | int field_fixed; //0: field has string or sequence |
128 | //1: field has no string or sequenc |
129 | //-1: uninitialize |
130 | |
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131 | struct _LttField * parent; |
132 | struct _LttField ** child; //for array, sequence and struct: |
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133 | //list of fields, it may have only one |
134 | //field if the element is not a struct |
135 | unsigned current_element; //which element is currently processed |
136 | }; |
137 | |
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138 | |
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139 | struct _LttFacility{ |
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140 | char * name; //facility name |
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141 | unsigned int event_number; //number of events in the facility |
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142 | LttChecksum checksum; //checksum of the facility |
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143 | guint32 base_id; //base id of the facility |
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144 | LttEventType ** events; //array of event types |
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145 | LttType ** named_types; |
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146 | unsigned int named_types_number; |
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147 | }; |
148 | |
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149 | struct _LttTracefile{ |
150 | char * name; //tracefile name |
151 | LttTrace * trace; //trace containing the tracefile |
152 | int fd; //file descriptor |
153 | off_t file_size; //file size |
154 | unsigned block_size; //block_size |
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155 | unsigned int block_number; //number of blocks in the file |
156 | unsigned int which_block; //which block the current block is |
157 | unsigned int which_event; //which event of the current block |
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158 | //is currently processed |
159 | LttTime current_event_time; //time of the current event |
160 | BlockStart * a_block_start; //block start of the block |
161 | BlockEnd * a_block_end; //block end of the block |
162 | void * cur_event_pos; //the position of the current event |
163 | void * buffer; //the buffer containing the block |
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164 | double nsec_per_cycle; //Nsec per cycle |
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165 | guint64 one_overflow_nsec; //nsec for one overflow |
166 | gint64 overflow_nsec; //precalculated nsec for overflows |
167 | //can be negative to include value |
168 | //of block start cycle count. |
169 | //incremented at each overflow while |
170 | //reading. |
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171 | //LttCycleCount cycles_per_nsec_reciprocal; // Optimisation for speed |
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172 | unsigned cur_heart_beat_number; //current number of heart beat in the buf |
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173 | LttCycleCount cur_cycle_count; //current cycle count of the event |
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174 | void * last_event_pos; |
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175 | |
176 | LttTime prev_block_end_time; //the end time of previous block |
177 | LttTime prev_event_time; //the time of the previous event |
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178 | LttCycleCount pre_cycle_count; //previous cycle count of the event |
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179 | unsigned int count; //the number of overflow of cycle count |
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180 | }; |
181 | |
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182 | struct _LttTrace{ |
183 | char * pathname; //the pathname of the trace |
184 | guint facility_number; //the number of facilities |
185 | guint control_tracefile_number; //the number of control files |
186 | guint per_cpu_tracefile_number; //the number of per cpu files |
187 | LttSystemDescription * system_description;//system description |
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188 | |
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189 | GPtrArray *control_tracefiles; //array of control tracefiles |
190 | GPtrArray *per_cpu_tracefiles; //array of per cpu tracefiles |
191 | GPtrArray *facilities; //array of facilities |
192 | LttArchSize my_arch_size; //data size of the local machine |
193 | LttArchEndian my_arch_endian; //endian type of the local machine |
194 | }; |
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195 | |
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196 | struct _LttEventPosition{ |
197 | unsigned block_num; //block which contains the event |
198 | unsigned event_num; //event index in the block |
199 | unsigned event_offset; //event position in the block |
200 | LttTime event_time; //the time of the event |
201 | LttCycleCount event_cycle_count; //the cycle count of the event |
202 | unsigned heart_beat_number; //current number of heart beats |
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203 | LttTracefile *tf; //tracefile containing the event |
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204 | gboolean old_position; //flag to show if it is the position |
205 | //being remembered |
18206708 |
206 | /* This is a workaround for fast position seek */ |
207 | void * last_event_pos; |
208 | |
209 | LttTime prev_block_end_time; //the end time of previous block |
210 | LttTime prev_event_time; //the time of the previous event |
18206708 |
211 | LttCycleCount pre_cycle_count; //previous cycle count of the event |
212 | int count; //the number of overflow of cycle count |
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213 | gint64 overflow_nsec; //precalculated nsec for overflows |
18206708 |
214 | /* end of workaround */ |
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215 | }; |
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216 | |
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217 | /* The characteristics of the system on which the trace was obtained |
218 | is described in a LttSystemDescription structure. */ |
219 | |
220 | struct _LttSystemDescription { |
221 | char *description; |
222 | char *node_name; |
223 | char *domain_name; |
224 | unsigned nb_cpu; |
225 | LttArchSize size; |
226 | LttArchEndian endian; |
227 | char *kernel_name; |
228 | char *kernel_release; |
229 | char *kernel_version; |
230 | char *machine; |
231 | char *processor; |
232 | char *hardware_platform; |
233 | char *operating_system; |
234 | unsigned ltt_major_version; |
235 | unsigned ltt_minor_version; |
236 | unsigned ltt_block_size; |
237 | LttTime trace_start; |
238 | LttTime trace_end; |
239 | }; |
240 | |
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241 | /***************************************************************************** |
242 | macro for size of some data types |
243 | *****************************************************************************/ |
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244 | #define EVENT_ID_SIZE sizeof(guint16) |
245 | #define TIME_DELTA_SIZE sizeof(guint32) |
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246 | #define EVENT_HEADER_SIZE (EVENT_ID_SIZE + TIME_DELTA_SIZE) |
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247 | |
248 | |
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249 | #endif /* LTT_PRIVATE_H */ |