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1 | /* This file is part of the Linux Trace Toolkit viewer |
2 | * Copyright (C) 2007 Mathieu Desnoyers |
3 | * |
4 | * Complete rewrite from the original version made by XangXiu Yang. |
5 | * |
6 | * This library is free software; you can redistribute it and/or |
7 | * modify it under the terms of the GNU Lesser General Public |
8 | * License Version 2.1 as published by the Free Software Foundation. |
9 | * |
10 | * This library is distributed in the hope that it will be useful, |
11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
13 | * Lesser General Public License for more details. |
14 | * |
15 | * You should have received a copy of the GNU Lesser General Public |
16 | * License along with this library; if not, write to the |
17 | * Free Software Foundation, Inc., 59 Temple Place - Suite 330, |
18 | * Boston, MA 02111-1307, USA. |
19 | */ |
20 | |
21 | #ifdef HAVE_CONFIG_H |
22 | #include <config.h> |
23 | #endif |
24 | |
25 | #include <glib.h> |
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26 | |
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27 | #include <ltt/event.h> |
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28 | #include <ltt/ltt-types.h> |
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29 | #include <ltt/ltt-private.h> |
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30 | |
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31 | /***************************************************************************** |
32 | *Function name |
33 | * ltt_event_position_get : get the event position data |
34 | *Input params |
35 | * e : an instance of an event type |
36 | * ep : a pointer to event's position structure |
37 | * tf : tracefile pointer |
38 | * block : current block |
39 | * offset : current offset |
40 | * tsc : current tsc |
41 | ****************************************************************************/ |
42 | void ltt_event_position_get(LttEventPosition *ep, LttTracefile **tf, |
43 | guint *block, guint *offset, guint64 *tsc) |
44 | { |
45 | *tf = ep->tracefile; |
46 | *block = ep->block; |
47 | *offset = ep->offset; |
48 | *tsc = ep->tsc; |
49 | } |
50 | |
51 | |
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52 | void ltt_event_position_set(LttEventPosition *ep, LttTracefile *tf, |
53 | guint block, guint offset, guint64 tsc) |
54 | { |
55 | ep->tracefile = tf; |
56 | ep->block = block; |
57 | ep->offset = offset; |
58 | ep->tsc = tsc; |
59 | } |
60 | |
61 | |
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62 | /***************************************************************************** |
63 | *Function name |
64 | * ltt_event_position : get the event's position |
65 | *Input params |
66 | * e : an instance of an event type |
67 | * ep : a pointer to event's position structure |
68 | ****************************************************************************/ |
69 | |
70 | void ltt_event_position(LttEvent *e, LttEventPosition *ep) |
71 | { |
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72 | ep->tracefile = e->tracefile; |
73 | ep->block = e->block; |
74 | ep->offset = e->offset; |
75 | ep->tsc = e->tsc; |
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76 | } |
77 | |
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78 | LttEventPosition * ltt_event_position_new() |
79 | { |
80 | return g_new(LttEventPosition, 1); |
81 | } |
82 | |
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83 | |
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84 | /***************************************************************************** |
85 | * Function name |
86 | * ltt_event_position_compare : compare two positions |
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87 | * A NULL value is infinite. |
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88 | * Input params |
89 | * ep1 : a pointer to event's position structure |
90 | * ep2 : a pointer to event's position structure |
91 | * Return |
92 | * -1 is ep1 < ep2 |
93 | * 1 if ep1 > ep2 |
94 | * 0 if ep1 == ep2 |
95 | ****************************************************************************/ |
96 | |
97 | |
98 | gint ltt_event_position_compare(const LttEventPosition *ep1, |
99 | const LttEventPosition *ep2) |
100 | { |
a00149f6 |
101 | if(ep1 == NULL && ep2 == NULL) |
102 | return 0; |
103 | if(ep1 != NULL && ep2 == NULL) |
104 | return -1; |
105 | if(ep1 == NULL && ep2 != NULL) |
106 | return 1; |
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107 | |
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108 | if(ep1->tracefile != ep2->tracefile) |
109 | g_error("ltt_event_position_compare on different tracefiles makes no sense"); |
110 | |
111 | if(ep1->block < ep2->block) |
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112 | return -1; |
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113 | if(ep1->block > ep2->block) |
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114 | return 1; |
3aee1200 |
115 | if(ep1->offset < ep2->offset) |
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116 | return -1; |
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117 | if(ep1->offset > ep2->offset) |
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118 | return 1; |
119 | return 0; |
120 | } |
121 | |
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122 | /***************************************************************************** |
123 | * Function name |
124 | * ltt_event_position_copy : copy position |
125 | * Input params |
126 | * src : a pointer to event's position structure source |
127 | * dest : a pointer to event's position structure dest |
128 | * Return |
129 | * void |
130 | ****************************************************************************/ |
131 | void ltt_event_position_copy(LttEventPosition *dest, |
132 | const LttEventPosition *src) |
133 | { |
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134 | if(src == NULL) |
135 | dest = NULL; |
136 | else |
137 | *dest = *src; |
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138 | } |
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139 | |
140 | |
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141 | |
142 | LttTracefile *ltt_event_position_tracefile(LttEventPosition *ep) |
143 | { |
144 | return ep->tracefile; |
145 | } |
146 | |
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147 | /***************************************************************************** |
148 | * These functions extract data from an event after architecture specific |
149 | * conversions |
150 | ****************************************************************************/ |
151 | guint32 ltt_event_get_unsigned(LttEvent *e, struct marker_field *f) |
152 | { |
153 | gboolean reverse_byte_order; |
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154 | |
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155 | if(unlikely(f->attributes & LTT_ATTRIBUTE_NETWORK_BYTE_ORDER)) { |
156 | reverse_byte_order = (g_ntohs(0x1) != 0x1); |
157 | } else { |
158 | reverse_byte_order = LTT_GET_BO(e->tracefile); |
159 | } |
160 | |
161 | switch(f->size) { |
162 | case 1: |
163 | { |
164 | guint8 x = *(guint8 *)(e->data + f->offset); |
165 | return (guint32) x; |
166 | } |
167 | break; |
168 | case 2: |
169 | return (guint32)ltt_get_uint16(reverse_byte_order, e->data + f->offset); |
170 | break; |
171 | case 4: |
172 | return (guint32)ltt_get_uint32(reverse_byte_order, e->data + f->offset); |
173 | break; |
174 | case 8: |
175 | default: |
176 | g_critical("ltt_event_get_unsigned : field size %i unknown", f->size); |
177 | return 0; |
178 | break; |
179 | } |
180 | } |
181 | |
182 | gint32 ltt_event_get_int(LttEvent *e, struct marker_field *f) |
183 | { |
184 | gboolean reverse_byte_order; |
185 | if(unlikely(f->attributes & LTT_ATTRIBUTE_NETWORK_BYTE_ORDER)) { |
186 | reverse_byte_order = (g_ntohs(0x1) != 0x1); |
187 | } else { |
188 | reverse_byte_order = LTT_GET_BO(e->tracefile); |
189 | } |
190 | |
191 | switch(f->size) { |
192 | case 1: |
193 | { |
194 | gint8 x = *(gint8 *)(e->data + f->offset); |
195 | return (gint32) x; |
196 | } |
197 | break; |
198 | case 2: |
199 | return (gint32)ltt_get_int16(reverse_byte_order, e->data + f->offset); |
200 | break; |
201 | case 4: |
202 | return (gint32)ltt_get_int32(reverse_byte_order, e->data + f->offset); |
203 | break; |
204 | case 8: |
205 | default: |
206 | g_critical("ltt_event_get_int : field size %i unknown", f->size); |
207 | return 0; |
208 | break; |
209 | } |
210 | } |
211 | |
212 | guint64 ltt_event_get_long_unsigned(LttEvent *e, struct marker_field *f) |
213 | { |
214 | gboolean reverse_byte_order; |
215 | if(unlikely(f->attributes & LTT_ATTRIBUTE_NETWORK_BYTE_ORDER)) { |
216 | reverse_byte_order = (g_ntohs(0x1) != 0x1); |
217 | } else { |
218 | reverse_byte_order = LTT_GET_BO(e->tracefile); |
219 | } |
220 | |
221 | switch(f->size) { |
222 | case 1: |
223 | { |
224 | guint8 x = *(guint8 *)(e->data + f->offset); |
225 | return (guint64) x; |
226 | } |
227 | break; |
228 | case 2: |
229 | return (guint64)ltt_get_uint16(reverse_byte_order, e->data + f->offset); |
230 | break; |
231 | case 4: |
232 | return (guint64)ltt_get_uint32(reverse_byte_order, e->data + f->offset); |
233 | break; |
234 | case 8: |
235 | return ltt_get_uint64(reverse_byte_order, e->data + f->offset); |
236 | break; |
237 | default: |
238 | g_critical("ltt_event_get_long_unsigned : field size %i unknown", f->size); |
239 | return 0; |
240 | break; |
241 | } |
242 | } |
243 | |
244 | gint64 ltt_event_get_long_int(LttEvent *e, struct marker_field *f) |
245 | { |
246 | gboolean reverse_byte_order; |
247 | if(unlikely(f->attributes & LTT_ATTRIBUTE_NETWORK_BYTE_ORDER)) { |
248 | reverse_byte_order = (g_ntohs(0x1) != 0x1); |
249 | } else { |
250 | reverse_byte_order = LTT_GET_BO(e->tracefile); |
251 | } |
252 | |
253 | switch(f->size) { |
254 | case 1: |
255 | { |
256 | gint8 x = *(gint8 *)(e->data + f->offset); |
257 | return (gint64) x; |
258 | } |
259 | break; |
260 | case 2: |
261 | return (gint64)ltt_get_int16(reverse_byte_order, e->data + f->offset); |
262 | break; |
263 | case 4: |
264 | return (gint64)ltt_get_int32(reverse_byte_order, e->data + f->offset); |
265 | break; |
266 | case 8: |
267 | return ltt_get_int64(reverse_byte_order, e->data + f->offset); |
268 | break; |
269 | default: |
270 | g_critical("ltt_event_get_long_int : field size %i unknown", f->size); |
271 | return 0; |
272 | break; |
273 | } |
274 | } |
275 | |
276 | #if 0 |
277 | float ltt_event_get_float(LttEvent *e, struct marker_field *f) |
278 | { |
279 | gboolean reverse_byte_order; |
280 | if(unlikely(f->attributes & LTT_ATTRIBUTE_NETWORK_BYTE_ORDER)) { |
281 | reverse_byte_order = (g_ntohs(0x1) != 0x1); |
282 | } else { |
283 | g_assert(LTT_HAS_FLOAT(e->tracefile)); |
284 | reverse_byte_order = LTT_GET_FLOAT_BO(e->tracefile); |
285 | } |
286 | |
287 | g_assert(f->field_type.type_class == LTT_FLOAT && f->size == 4); |
288 | |
289 | if(reverse_byte_order == 0) return *(float *)(e->data + f->offset); |
290 | else{ |
291 | void *ptr = e->data + f->offset; |
292 | guint32 value = bswap_32(*(guint32*)ptr); |
293 | return *(float*)&value; |
294 | } |
295 | } |
296 | |
297 | double ltt_event_get_double(LttEvent *e, struct marker_field *f) |
298 | { |
299 | gboolean reverse_byte_order; |
300 | if(unlikely(f->attributes & LTT_ATTRIBUTE_NETWORK_BYTE_ORDER)) { |
301 | reverse_byte_order = (g_ntohs(0x1) != 0x1); |
302 | } else { |
303 | g_assert(LTT_HAS_FLOAT(e->tracefile)); |
304 | reverse_byte_order = LTT_GET_FLOAT_BO(e->tracefile); |
305 | } |
306 | |
307 | if(f->size == 4) |
308 | return ltt_event_get_float(e, f); |
309 | |
310 | g_assert(f->field_type.type_class == LTT_FLOAT && f->size == 8); |
311 | |
312 | if(reverse_byte_order == 0) return *(double *)(e->data + f->offset); |
313 | else { |
314 | void *ptr = e->data + f->offset; |
315 | guint64 value = bswap_64(*(guint64*)ptr); |
316 | return *(double*)&value; |
317 | } |
318 | } |
319 | #endif |
320 | |
321 | /***************************************************************************** |
322 | * The string obtained is only valid until the next read from |
323 | * the same tracefile. |
324 | ****************************************************************************/ |
325 | char *ltt_event_get_string(LttEvent *e, struct marker_field *f) |
326 | { |
327 | g_assert(f->type == LTT_TYPE_STRING); |
328 | |
329 | return (gchar*)g_strdup((gchar*)(e->data + f->offset)); |
330 | } |
331 | |
332 | |