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1 | /* This file is part of the Linux Trace Toolkit trace reading library |
2 | * Copyright (C) 2003-2004 Michel Dagenais |
3 | * |
4 | * This library is free software; you can redistribute it and/or |
5 | * modify it under the terms of the GNU Lesser General Public |
6 | * License Version 2.1 as published by the Free Software Foundation. |
7 | * |
8 | * This library 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 GNU |
11 | * Lesser General Public License for more details. |
12 | * |
13 | * You should have received a copy of the GNU Lesser General Public |
14 | * License along with this library; if not, write to the |
15 | * Free Software Foundation, Inc., 59 Temple Place - Suite 330, |
16 | * Boston, MA 02111-1307, USA. |
17 | */ |
18 | |
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19 | #ifndef TRACE_H |
20 | #define TRACE_H |
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21 | |
22 | #include <ltt/ltt.h> |
23 | |
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24 | |
25 | extern GQuark LTT_FACILITY_NAME_HEARTBEAT, |
26 | LTT_EVENT_NAME_HEARTBEAT; |
27 | |
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28 | /* A trace is specified as a pathname to the directory containing all the |
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29 | associated data (control tracefiles, per cpu tracefiles, event |
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30 | descriptions...). |
31 | |
32 | When a trace is closed, all the associated facilities, types and fields |
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33 | are released as well. |
34 | |
35 | return value is NULL if there is an error when opening the trace. |
36 | |
37 | */ |
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38 | |
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39 | LttTrace *ltt_trace_open(const gchar *pathname); |
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40 | |
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41 | /* copy reopens a trace |
42 | * |
43 | * return value NULL if error while opening the trace |
44 | */ |
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45 | LttTrace *ltt_trace_copy(LttTrace *self); |
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46 | |
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47 | GQuark ltt_trace_name(LttTrace *t); |
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48 | |
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49 | void ltt_trace_close(LttTrace *t); |
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50 | |
51 | |
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52 | LttSystemDescription *ltt_trace_system_description(LttTrace *t); |
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53 | |
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54 | |
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55 | /* Functions to discover the facilities in the trace. Once the number |
56 | of facilities is known, they may be accessed by position. Multiple |
57 | versions of a facility (same name, different checksum) have consecutive |
58 | positions. */ |
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59 | |
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60 | unsigned ltt_trace_facility_number(LttTrace *t); |
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61 | |
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62 | LttFacility *ltt_trace_facility_get(LttTrace *t, unsigned i); |
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63 | |
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64 | LttFacility * ltt_trace_facility_by_id(LttTrace * trace, guint8 id); |
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65 | |
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66 | /* Look for a facility by name. It returns the number of facilities found |
67 | and sets the position argument to the first found. Returning 0, the named |
68 | facility is unknown, returning 1, the named facility is at the specified |
69 | position, returning n, the facilities are from position to |
70 | position + n - 1. */ |
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71 | |
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72 | unsigned ltt_trace_facility_find(LttTrace *t, gchar *name, unsigned *position); |
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73 | |
74 | |
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75 | /* Functions to discover all the event types in the trace */ |
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76 | |
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77 | unsigned ltt_trace_eventtype_number(LttTrace *t); |
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78 | |
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79 | LttEventType *ltt_trace_eventtype_get(LttTrace *t, unsigned i); |
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80 | |
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81 | |
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82 | /* Get the start time and end time of the trace */ |
83 | |
84 | void ltt_trace_time_span_get(LttTrace *t, LttTime *start, LttTime *end); |
85 | |
86 | |
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87 | /* Get the name of a tracefile */ |
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88 | |
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89 | GQuark ltt_tracefile_name(LttTracefile *tf); |
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90 | |
91 | |
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92 | /* Get the number of blocks in the tracefile */ |
93 | |
94 | unsigned ltt_tracefile_block_number(LttTracefile *tf); |
95 | |
96 | |
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97 | /* Seek to the first event of the trace with time larger or equal to time */ |
98 | |
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99 | int ltt_tracefile_seek_time(LttTracefile *t, LttTime time); |
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100 | |
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101 | /* Seek to the first event with position equal or larger to ep */ |
102 | |
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103 | int ltt_tracefile_seek_position(LttTracefile *t, |
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104 | const LttEventPosition *ep); |
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105 | |
106 | /* Read the next event */ |
107 | |
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108 | int ltt_tracefile_read(LttTracefile *t); |
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109 | |
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110 | /* ltt_tracefile_read cut down in pieces */ |
111 | int ltt_tracefile_read_seek(LttTracefile *t); |
112 | int ltt_tracefile_read_update_event(LttTracefile *t); |
113 | int ltt_tracefile_read_op(LttTracefile *t); |
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114 | |
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115 | /* open tracefile */ |
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116 | |
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117 | gint ltt_tracefile_open(LttTrace *t, gchar * fileName, LttTracefile *tf); |
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118 | |
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119 | /* get the data type size and endian type of the local machine */ |
120 | |
121 | void getDataEndianType(LttArchSize * size, LttArchEndian * endian); |
122 | |
123 | /* get an integer number */ |
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124 | gint64 get_int(gboolean reverse_byte_order, gint size, void *data); |
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125 | |
126 | /* get the node name of the system */ |
127 | |
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128 | gchar * ltt_trace_system_description_node_name (LttSystemDescription * s); |
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129 | |
130 | |
131 | /* get the domain name of the system */ |
132 | |
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133 | gchar * ltt_trace_system_description_domain_name (LttSystemDescription * s); |
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134 | |
135 | |
136 | /* get the description of the system */ |
137 | |
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138 | gchar * ltt_trace_system_description_description (LttSystemDescription * s); |
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139 | |
140 | |
141 | /* get the start time of the trace */ |
142 | |
143 | LttTime ltt_trace_system_description_trace_start_time(LttSystemDescription *s); |
144 | |
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145 | /* copy tracefile info over another. Used for sync. */ |
146 | LttTracefile *ltt_tracefile_new(); |
147 | void ltt_tracefile_destroy(LttTracefile *tf); |
148 | void ltt_tracefile_copy(LttTracefile *dest, const LttTracefile *src); |
149 | |
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150 | void get_absolute_pathname(const gchar *pathname, gchar * abs_pathname); |
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151 | |
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152 | |
153 | |
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154 | #endif // TRACE_H |