1 /* This file is part of the Linux Trace Toolkit viewer
2 * Copyright (C) 2003-2004 Xiangxiu Yang
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,
23 #include <sys/types.h>
26 #define LTT_PACKED_STRUCT __attribute__ ((packed))
28 /* enumeration definition */
30 typedef enum _BuildinEvent
{
31 TRACE_FACILITY_LOAD
= 0,
32 TRACE_BLOCK_START
= 17,
34 TRACE_TIME_HEARTBEAT
= 19
38 /* structure definition */
40 typedef struct _FacilityLoad
{
44 } LTT_PACKED_STRUCT FacilityLoad
;
46 typedef struct _BlockStart
{
47 LttTime time
; //Time stamp of this block
48 LttCycleCount cycle_count
; //cycle count of the event
49 guint32 block_id
; //block id
50 } LTT_PACKED_STRUCT BlockStart
;
52 typedef struct _BlockEnd
{
53 LttTime time
; //Time stamp of this block
54 LttCycleCount cycle_count
; //cycle count of the event
55 guint32 block_id
; //block id
56 } LTT_PACKED_STRUCT BlockEnd
;
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
;
65 char * type_name
; //type name if it is a named type
66 char * element_name
; //elements name of the struct
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
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
82 unsigned int latest_block
; //the latest block using the event type
83 unsigned int latest_event
; //the latest event using the event type
90 LttCycleCount event_cycle_count
;
91 LttTracefile
* tracefile
;
92 void * data
; //event data
93 unsigned int which_block
; //the current block of the event
94 unsigned int which_event
; //the position of the event
95 /* This is a workaround for fast position seek */
96 void * last_event_pos
;
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
102 /* end of workaround */
107 unsigned field_pos
; //field position within its parent
108 LttType
* field_type
; //field type, if it is root field
109 //then it must be struct type
111 off_t offset_root
; //offset from the root, -1:uninitialized
112 short fixed_root
; //offset fixed according to the root
113 //-1:uninitialized, 0:unfixed, 1:fixed
114 off_t offset_parent
; //offset from the parent,-1:uninitialized
115 short fixed_parent
; //offset fixed according to its parent
116 //-1:uninitialized, 0:unfixed, 1:fixed
117 // void * base_address; //base address of the field ????
119 int field_size
; //>0: size of the field,
122 int sequ_number_size
; //the size of unsigned used to save the
123 //number of elements in the sequence
125 int element_size
; //the element size of the sequence
126 int field_fixed
; //0: field has string or sequence
127 //1: field has no string or sequenc
130 struct _LttField
* parent
;
131 struct _LttField
** child
; //for array, sequence and struct:
132 //list of fields, it may have only one
133 //field if the element is not a struct
134 unsigned current_element
; //which element is currently processed
139 char * name
; //facility name
140 unsigned int event_number
; //number of events in the facility
141 LttChecksum checksum
; //checksum of the facility
142 guint32 base_id
; //base id of the facility
143 LttEventType
** events
; //array of event types
144 LttType
** named_types
;
145 unsigned int named_types_number
;
148 struct _LttTracefile
{
149 char * name
; //tracefile name
150 LttTrace
* trace
; //trace containing the tracefile
151 int fd
; //file descriptor
152 off_t file_size
; //file size
153 unsigned block_size
; //block_size
154 unsigned int block_number
; //number of blocks in the file
155 unsigned int which_block
; //which block the current block is
156 unsigned int which_event
; //which event of the current block
157 //is currently processed
158 LttTime current_event_time
; //time of the current event
159 BlockStart
* a_block_start
; //block start of the block
160 BlockEnd
* a_block_end
; //block end of the block
161 void * cur_event_pos
; //the position of the current event
162 void * buffer
; //the buffer containing the block
163 double nsec_per_cycle
; //Nsec per cycle
164 //LttCycleCount cycles_per_nsec_reciprocal; // Optimisation for speed
165 unsigned cur_heart_beat_number
; //current number of heart beat in the buf
166 LttCycleCount cur_cycle_count
; //current cycle count of the event
167 void * last_event_pos
;
169 LttTime prev_block_end_time
; //the end time of previous block
170 LttTime prev_event_time
; //the time of the previous event
171 LttCycleCount pre_cycle_count
; //previous cycle count of the event
172 unsigned int count
; //the number of overflow of cycle count
176 char * pathname
; //the pathname of the trace
177 guint facility_number
; //the number of facilities
178 guint control_tracefile_number
; //the number of control files
179 guint per_cpu_tracefile_number
; //the number of per cpu files
180 LttSystemDescription
* system_description
;//system description
182 GPtrArray
*control_tracefiles
; //array of control tracefiles
183 GPtrArray
*per_cpu_tracefiles
; //array of per cpu tracefiles
184 GPtrArray
*facilities
; //array of facilities
185 LttArchSize my_arch_size
; //data size of the local machine
186 LttArchEndian my_arch_endian
; //endian type of the local machine
189 struct _LttEventPosition
{
190 unsigned block_num
; //block which contains the event
191 unsigned event_num
; //event index in the block
192 unsigned event_offset
; //event position in the block
193 LttTime event_time
; //the time of the event
194 LttCycleCount event_cycle_count
; //the cycle count of the event
195 unsigned heart_beat_number
; //current number of heart beats
196 LttTracefile
*tf
; //tracefile containing the event
197 gboolean old_position
; //flag to show if it is the position
199 /* This is a workaround for fast position seek */
200 void * last_event_pos
;
202 LttTime prev_block_end_time
; //the end time of previous block
203 LttTime prev_event_time
; //the time of the previous event
204 LttCycleCount pre_cycle_count
; //previous cycle count of the event
205 int count
; //the number of overflow of cycle count
206 /* end of workaround */
209 /* The characteristics of the system on which the trace was obtained
210 is described in a LttSystemDescription structure. */
212 struct _LttSystemDescription
{
218 LttArchEndian endian
;
220 char *kernel_release
;
221 char *kernel_version
;
224 char *hardware_platform
;
225 char *operating_system
;
226 unsigned ltt_major_version
;
227 unsigned ltt_minor_version
;
228 unsigned ltt_block_size
;
233 /*****************************************************************************
234 macro for size of some data types
235 *****************************************************************************/
236 #define EVENT_ID_SIZE sizeof(guint16)
237 #define TIME_DELTA_SIZE sizeof(guint32)
238 #define EVENT_HEADER_SIZE (EVENT_ID_SIZE + TIME_DELTA_SIZE)
241 #endif /* LTT_PRIVATE_H */