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1 | /* This file is part of the Linux Trace Toolkit trace reading library |
2 | * Copyright (C) 2003-2004 Michel Dagenais |
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3 | * 2005 Mathieu Desnoyers |
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4 | * |
5 | * This library is free software; you can redistribute it and/or |
6 | * modify it under the terms of the GNU Lesser General Public |
7 | * License Version 2.1 as published by the Free Software Foundation. |
8 | * |
9 | * This library is distributed in the hope that it will be useful, |
10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
12 | * Lesser General Public License for more details. |
13 | * |
14 | * You should have received a copy of the GNU Lesser General Public |
15 | * License along with this library; if not, write to the |
16 | * Free Software Foundation, Inc., 59 Temple Place - Suite 330, |
17 | * Boston, MA 02111-1307, USA. |
18 | */ |
19 | |
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20 | #ifndef TRACE_H |
21 | #define TRACE_H |
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22 | |
23 | #include <ltt/ltt.h> |
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24 | #include <ltt/ltt-private.h> |
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25 | #include <stdint.h> |
26 | #include <glib.h> |
27 | |
28 | struct LttTrace { |
29 | GQuark pathname; //the pathname of the trace |
30 | //LttSystemDescription * system_description;//system description |
31 | |
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32 | guint num_cpu; |
33 | |
34 | guint32 arch_type; |
35 | guint32 arch_variant; |
36 | guint8 arch_size; |
37 | guint8 ltt_major_version; |
38 | guint8 ltt_minor_version; |
39 | guint8 flight_recorder; |
40 | guint32 freq_scale; |
41 | uint64_t start_freq; |
42 | uint64_t start_tsc; |
43 | uint64_t start_monotonic; |
44 | LttTime start_time; |
45 | LttTime start_time_from_tsc; |
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46 | |
47 | GData *tracefiles; //tracefiles groups |
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48 | }; |
49 | |
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50 | static inline guint ltt_trace_get_num_cpu(LttTrace *t) |
51 | { |
52 | return t->num_cpu; |
53 | } |
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54 | |
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55 | /* A trace is specified as a pathname to the directory containing all the |
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56 | associated data (control tracefiles, per cpu tracefiles, event |
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57 | descriptions...). |
58 | |
59 | When a trace is closed, all the associated facilities, types and fields |
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60 | are released as well. |
61 | |
62 | return value is NULL if there is an error when opening the trace. |
63 | |
64 | */ |
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65 | |
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66 | LttTrace *ltt_trace_open(const gchar *pathname); |
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67 | |
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68 | /* copy reopens a trace |
69 | * |
70 | * return value NULL if error while opening the trace |
71 | */ |
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72 | LttTrace *ltt_trace_copy(LttTrace *self); |
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73 | |
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74 | static inline GQuark ltt_trace_name(const LttTrace *t) |
75 | { |
76 | return t->pathname; |
77 | } |
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78 | |
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79 | |
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80 | void ltt_trace_close(LttTrace *t); |
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81 | |
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82 | LttSystemDescription *ltt_trace_system_description(LttTrace *t); |
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83 | |
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84 | |
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85 | /* Get the start time and end time of the trace */ |
86 | |
87 | void ltt_trace_time_span_get(LttTrace *t, LttTime *start, LttTime *end); |
88 | |
89 | |
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90 | /* Get the name of a tracefile */ |
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91 | |
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92 | static inline GQuark ltt_tracefile_name(const LttTracefile *tf) |
93 | { |
94 | return tf->name; |
95 | } |
96 | |
97 | static inline GQuark ltt_tracefile_long_name(const LttTracefile *tf) |
98 | { |
99 | return tf->long_name; |
100 | } |
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101 | |
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102 | /* get the cpu number of the tracefile */ |
103 | |
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104 | static inline guint ltt_tracefile_cpu(LttTracefile *tf) |
105 | { |
106 | return tf->cpu_num; |
107 | } |
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108 | |
109 | /* For usertrace */ |
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110 | static inline guint ltt_tracefile_tid(LttTracefile *tf) |
111 | { |
112 | return tf->tid; |
113 | } |
114 | |
115 | static inline guint ltt_tracefile_pgid(LttTracefile *tf) |
116 | { |
117 | return tf->pgid; |
118 | } |
119 | |
120 | static inline guint64 ltt_tracefile_creation(LttTracefile *tf) |
121 | { |
122 | return tf->creation; |
123 | } |
124 | |
125 | static inline LttTrace *ltt_tracefile_get_trace(LttTracefile *tf) |
126 | { |
127 | return tf->trace; |
128 | } |
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129 | |
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130 | /* Get the number of blocks in the tracefile */ |
131 | |
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132 | static inline guint ltt_tracefile_block_number(LttTracefile *tf) |
133 | { |
134 | return tf->num_blocks; |
135 | } |
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136 | |
137 | |
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138 | /* Seek to the first event of the trace with time larger or equal to time */ |
139 | |
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140 | int ltt_tracefile_seek_time(LttTracefile *t, LttTime time); |
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141 | |
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142 | /* Seek to the first event with position equal or larger to ep */ |
143 | |
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144 | int ltt_tracefile_seek_position(LttTracefile *t, |
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145 | const LttEventPosition *ep); |
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146 | |
147 | /* Read the next event */ |
148 | |
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149 | int ltt_tracefile_read(LttTracefile *t); |
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150 | |
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151 | /* ltt_tracefile_read cut down in pieces */ |
152 | int ltt_tracefile_read_seek(LttTracefile *t); |
153 | int ltt_tracefile_read_update_event(LttTracefile *t); |
154 | int ltt_tracefile_read_op(LttTracefile *t); |
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155 | |
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156 | /* Get the current event of the tracefile : valid until the next read */ |
157 | LttEvent *ltt_tracefile_get_event(LttTracefile *tf); |
158 | |
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159 | /* get the data type size and endian type of the local machine */ |
160 | |
161 | void getDataEndianType(LttArchSize * size, LttArchEndian * endian); |
162 | |
163 | /* get an integer number */ |
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164 | gint64 get_int(gboolean reverse_byte_order, gint size, void *data); |
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165 | |
166 | /* get the node name of the system */ |
167 | |
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168 | gchar * ltt_trace_system_description_node_name (LttSystemDescription * s); |
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169 | |
170 | |
171 | /* get the domain name of the system */ |
172 | |
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173 | gchar * ltt_trace_system_description_domain_name (LttSystemDescription * s); |
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174 | |
175 | |
176 | /* get the description of the system */ |
177 | |
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178 | gchar * ltt_trace_system_description_description (LttSystemDescription * s); |
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179 | |
180 | |
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181 | /* get the NTP start time of the trace */ |
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182 | |
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183 | LttTime ltt_trace_start_time(LttTrace *t); |
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184 | |
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185 | /* get the monotonic start time of the trace */ |
186 | |
187 | LttTime ltt_trace_start_time_monotonic(LttTrace *t); |
188 | |
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189 | void get_absolute_pathname(const gchar *pathname, gchar * abs_pathname); |
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190 | |
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191 | /* May return a NULL tracefile group */ |
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192 | GData **ltt_trace_get_tracefiles_groups(LttTrace *trace); |
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193 | |
194 | typedef void (*ForEachTraceFileFunc)(LttTracefile *tf, gpointer func_args); |
195 | |
196 | struct compute_tracefile_group_args { |
197 | ForEachTraceFileFunc func; |
198 | gpointer func_args; |
199 | }; |
200 | |
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201 | void compute_tracefile_group(GQuark key_id, |
202 | GArray *group, |
203 | struct compute_tracefile_group_args *args); |
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204 | |
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205 | |
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206 | gint64 ltt_get_int(gboolean reverse_byte_order, gint size, void *data); |
207 | |
208 | guint64 ltt_get_uint(gboolean reverse_byte_order, gint size, void *data); |
209 | |
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210 | LttTime ltt_interpolate_time_from_tsc(LttTracefile *tf, guint64 tsc); |
211 | |
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212 | /* Set to enable event debugging output */ |
213 | void ltt_event_debug(int state); |
214 | |
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215 | #endif // TRACE_H |