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1 | /* This file is part of the Linux Trace Toolkit viewer |
2 | * Copyright (C) 2003-2004 Xiangxiu Yang |
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3 | * 2006 Mathieu Desnoyers |
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4 | * |
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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. |
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8 | * |
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9 | * This library is distributed in the hope that it will be useful, |
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10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
12 | * Lesser General Public License for more details. |
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13 | * |
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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. |
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18 | */ |
19 | |
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20 | #ifndef LTT_PRIVATE_H |
21 | #define LTT_PRIVATE_H |
22 | |
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23 | #include <glib.h> |
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24 | #include <sys/types.h> |
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25 | #include <ltt/ltt.h> |
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26 | #include <endian.h> |
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27 | #include <ltt/event.h> |
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28 | |
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29 | #ifndef max |
30 | #define max(a,b) ((a)>(b)?(a):(b)) |
31 | #endif |
32 | |
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33 | #ifndef min |
34 | #define min(a,b) ((a)<(b)?(a):(b)) |
35 | #endif |
36 | |
37 | |
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38 | |
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39 | #define LTT_MAGIC_NUMBER 0x00D6B7ED |
40 | #define LTT_REV_MAGIC_NUMBER 0xEDB7D600 |
41 | |
42 | #define NSEC_PER_USEC 1000 |
43 | |
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44 | /* Byte ordering */ |
45 | #define LTT_GET_BO(t) ((t)->reverse_bo) |
46 | |
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47 | #define LTT_HAS_FLOAT(t) ((t)->float_word_order ! =0) |
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48 | #define LTT_GET_FLOAT_BO(t) \ |
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49 | (((t)->float_word_order == __BYTE_ORDER) ? 0 : 1) |
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50 | |
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51 | #define SEQUENCE_AVG_ELEMENTS 1000 |
52 | |
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53 | typedef guint8 uint8_t; |
54 | typedef guint16 uint16_t; |
55 | typedef guint32 uint32_t; |
56 | typedef guint64 uint64_t; |
57 | |
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58 | /* Subbuffer header */ |
59 | struct ltt_subbuffer_header_2_0 { |
60 | uint64_t cycle_count_begin; /* Cycle count at subbuffer start */ |
61 | uint64_t cycle_count_end; /* Cycle count at subbuffer end */ |
62 | uint32_t magic_number; /* Trace magic number. |
63 | * contains endianness information. |
64 | */ |
65 | uint8_t major_version; |
66 | uint8_t minor_version; |
67 | uint8_t arch_size; /* Architecture pointer size */ |
68 | uint8_t alignment; /* LTT data alignment */ |
69 | uint64_t start_time_sec; /* NTP-corrected start time */ |
70 | uint64_t start_time_usec; |
71 | uint64_t start_freq; /* |
72 | * Frequency at trace start, |
73 | * used all along the trace. |
74 | */ |
75 | uint32_t freq_scale; /* Frequency scaling */ |
76 | uint32_t lost_size; /* Size unused at end of subbuffer */ |
77 | uint32_t buf_size; /* Size of this subbuffer */ |
78 | }; |
79 | |
80 | typedef struct ltt_subbuffer_header_2_0 ltt_subbuffer_header_t; |
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81 | |
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82 | enum field_status { FIELD_UNKNOWN, FIELD_VARIABLE, FIELD_FIXED }; |
83 | |
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84 | typedef struct _LttBuffer { |
85 | void * head; |
86 | unsigned int index; |
87 | |
88 | struct { |
89 | LttTime timestamp; |
90 | uint64_t cycle_count; |
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91 | uint64_t freq; /* Frequency in khz */ |
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92 | } begin; |
93 | struct { |
94 | LttTime timestamp; |
95 | uint64_t cycle_count; |
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96 | uint64_t freq; /* Frequency in khz */ |
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97 | } end; |
98 | uint32_t lost_size; /* Size unused at the end of the buffer */ |
99 | |
100 | /* Timekeeping */ |
101 | uint64_t tsc; /* Current timestamp counter */ |
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102 | uint64_t freq; /* Frequency in khz */ |
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103 | guint32 cyc2ns_scale; |
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104 | } LttBuffer; |
105 | |
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106 | struct LttTracefile { |
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107 | gboolean cpu_online; //is the cpu online ? |
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108 | GQuark long_name; //tracefile complete filename |
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109 | GQuark name; //tracefile name |
110 | guint cpu_num; //cpu number of the tracefile |
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111 | guint tid; //Usertrace tid, else 0 |
112 | guint pgid; //Usertrace pgid, else 0 |
113 | guint64 creation; //Usertrace creation, else 0 |
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114 | LttTrace * trace; //trace containing the tracefile |
115 | int fd; //file descriptor |
116 | off_t file_size; //file size |
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117 | //unsigned block_size; //block_size |
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118 | guint num_blocks; //number of blocks in the file |
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119 | gboolean reverse_bo; //must we reverse byte order ? |
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120 | gboolean float_word_order; //what is the byte order of floats ? |
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121 | size_t alignment; //alignment of events in the tracefile. |
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122 | // 0 or the architecture size in bytes. |
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123 | |
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124 | size_t buffer_header_size; |
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125 | uint8_t tscbits; |
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126 | uint8_t eventbits; |
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127 | uint64_t tsc_mask; |
128 | uint64_t tsc_mask_next_bit; //next MSB after the mask |
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129 | |
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130 | /* Current event */ |
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131 | LttEvent event; //Event currently accessible in the trace |
132 | |
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133 | /* Current block */ |
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134 | LttBuffer buffer; //current buffer |
135 | guint32 buf_size; /* The size of blocks */ |
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136 | }; |
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137 | |
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138 | /* The characteristics of the system on which the trace was obtained |
139 | is described in a LttSystemDescription structure. */ |
140 | |
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141 | struct LttSystemDescription { |
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142 | gchar *description; |
143 | gchar *node_name; |
144 | gchar *domain_name; |
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145 | unsigned nb_cpu; |
146 | LttArchSize size; |
147 | LttArchEndian endian; |
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148 | gchar *kernel_name; |
149 | gchar *kernel_release; |
150 | gchar *kernel_version; |
151 | gchar *machine; |
152 | gchar *processor; |
153 | gchar *hardware_platform; |
154 | gchar *operating_system; |
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155 | LttTime trace_start; |
156 | LttTime trace_end; |
157 | }; |
158 | |
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159 | /* Calculate the offset needed to align the type. |
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160 | * If alignment is 0, alignment is disactivated. |
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161 | * else, the function returns the offset needed to |
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162 | * align align_drift on the alignment value (should be |
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163 | * the size of the architecture). */ |
164 | static inline unsigned int ltt_align(size_t align_drift, |
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165 | size_t size_of_type, |
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166 | size_t alignment) |
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167 | { |
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168 | size_t align_offset = min(alignment, size_of_type); |
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169 | |
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170 | if(!alignment) |
171 | return 0; |
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172 | |
173 | g_assert(size_of_type != 0); |
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174 | return ((align_offset - align_drift) & (align_offset-1)); |
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175 | } |
176 | |
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177 | |
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178 | #endif /* LTT_PRIVATE_H */ |