| 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> |
| 26 | |
| 27 | #include <ltt/event.h> |
| 28 | #include <ltt/ltt-types.h> |
| 29 | #include <ltt/ltt-private.h> |
| 30 | #include <ltt/marker.h> |
| 31 | #include <ltt/marker-field.h> |
| 32 | |
| 33 | /***************************************************************************** |
| 34 | *Function name |
| 35 | * ltt_event_position_get : get the event position data |
| 36 | *Input params |
| 37 | * e : an instance of an event type |
| 38 | * ep : a pointer to event's position structure |
| 39 | * tf : tracefile pointer |
| 40 | * block : current block |
| 41 | * offset : current offset |
| 42 | * tsc : current tsc |
| 43 | ****************************************************************************/ |
| 44 | void ltt_event_position_get(LttEventPosition *ep, LttTracefile **tf, |
| 45 | guint *block, guint *offset, guint64 *tsc) |
| 46 | { |
| 47 | *tf = ep->tracefile; |
| 48 | *block = ep->block; |
| 49 | *offset = ep->offset; |
| 50 | *tsc = ep->tsc; |
| 51 | } |
| 52 | |
| 53 | |
| 54 | void ltt_event_position_set(LttEventPosition *ep, LttTracefile *tf, |
| 55 | guint block, guint offset, guint64 tsc) |
| 56 | { |
| 57 | ep->tracefile = tf; |
| 58 | ep->block = block; |
| 59 | ep->offset = offset; |
| 60 | ep->tsc = tsc; |
| 61 | } |
| 62 | |
| 63 | |
| 64 | /***************************************************************************** |
| 65 | *Function name |
| 66 | * ltt_event_position : get the event's position |
| 67 | *Input params |
| 68 | * e : an instance of an event type |
| 69 | * ep : a pointer to event's position structure |
| 70 | ****************************************************************************/ |
| 71 | |
| 72 | void ltt_event_position(LttEvent *e, LttEventPosition *ep) |
| 73 | { |
| 74 | ep->tracefile = e->tracefile; |
| 75 | ep->block = e->block; |
| 76 | ep->offset = e->offset; |
| 77 | ep->tsc = e->tsc; |
| 78 | } |
| 79 | |
| 80 | LttEventPosition * ltt_event_position_new() |
| 81 | { |
| 82 | return g_new(LttEventPosition, 1); |
| 83 | } |
| 84 | |
| 85 | |
| 86 | /***************************************************************************** |
| 87 | * Function name |
| 88 | * ltt_event_position_compare : compare two positions |
| 89 | * A NULL value is infinite. |
| 90 | * Input params |
| 91 | * ep1 : a pointer to event's position structure |
| 92 | * ep2 : a pointer to event's position structure |
| 93 | * Return |
| 94 | * -1 is ep1 < ep2 |
| 95 | * 1 if ep1 > ep2 |
| 96 | * 0 if ep1 == ep2 |
| 97 | ****************************************************************************/ |
| 98 | |
| 99 | |
| 100 | gint ltt_event_position_compare(const LttEventPosition *ep1, |
| 101 | const LttEventPosition *ep2) |
| 102 | { |
| 103 | if(ep1 == NULL && ep2 == NULL) |
| 104 | return 0; |
| 105 | if(ep1 != NULL && ep2 == NULL) |
| 106 | return -1; |
| 107 | if(ep1 == NULL && ep2 != NULL) |
| 108 | return 1; |
| 109 | |
| 110 | if(ep1->tracefile != ep2->tracefile) |
| 111 | g_error("ltt_event_position_compare on different tracefiles makes no sense"); |
| 112 | |
| 113 | if(ep1->block < ep2->block) |
| 114 | return -1; |
| 115 | if(ep1->block > ep2->block) |
| 116 | return 1; |
| 117 | if(ep1->offset < ep2->offset) |
| 118 | return -1; |
| 119 | if(ep1->offset > ep2->offset) |
| 120 | return 1; |
| 121 | return 0; |
| 122 | } |
| 123 | |
| 124 | /***************************************************************************** |
| 125 | * Function name |
| 126 | * ltt_event_position_copy : copy position |
| 127 | * Input params |
| 128 | * src : a pointer to event's position structure source |
| 129 | * dest : a pointer to event's position structure dest |
| 130 | * Return |
| 131 | * void |
| 132 | ****************************************************************************/ |
| 133 | void ltt_event_position_copy(LttEventPosition *dest, |
| 134 | const LttEventPosition *src) |
| 135 | { |
| 136 | if(src == NULL) |
| 137 | dest = NULL; |
| 138 | else |
| 139 | *dest = *src; |
| 140 | } |
| 141 | |
| 142 | |
| 143 | |
| 144 | LttTracefile *ltt_event_position_tracefile(LttEventPosition *ep) |
| 145 | { |
| 146 | return ep->tracefile; |
| 147 | } |
| 148 | |
| 149 | /***************************************************************************** |
| 150 | * These functions extract data from an event after architecture specific |
| 151 | * conversions |
| 152 | ****************************************************************************/ |
| 153 | guint32 ltt_event_get_unsigned(LttEvent *e, struct marker_field *f) |
| 154 | { |
| 155 | gboolean reverse_byte_order; |
| 156 | struct LttField *eventfield; |
| 157 | int offset, size; |
| 158 | |
| 159 | if(unlikely(f->attributes & LTT_ATTRIBUTE_NETWORK_BYTE_ORDER)) { |
| 160 | reverse_byte_order = (g_ntohs(0x1) != 0x1); |
| 161 | } else { |
| 162 | reverse_byte_order = LTT_GET_BO(e->tracefile); |
| 163 | } |
| 164 | |
| 165 | eventfield = ltt_event_field(e, marker_field_get_index(f)); |
| 166 | offset = eventfield->offset; |
| 167 | size = eventfield->size; |
| 168 | switch(size) { |
| 169 | case 1: |
| 170 | { |
| 171 | guint8 x = *(guint8 *)(e->data + offset); |
| 172 | return (guint32) x; |
| 173 | } |
| 174 | break; |
| 175 | case 2: |
| 176 | return (guint32)ltt_get_uint16(reverse_byte_order, e->data + offset); |
| 177 | break; |
| 178 | case 4: |
| 179 | return (guint32)ltt_get_uint32(reverse_byte_order, e->data + offset); |
| 180 | break; |
| 181 | case 8: |
| 182 | default: |
| 183 | g_critical("ltt_event_get_unsigned : field size %i unknown", size); |
| 184 | return 0; |
| 185 | break; |
| 186 | } |
| 187 | } |
| 188 | |
| 189 | gint32 ltt_event_get_int(LttEvent *e, struct marker_field *f) |
| 190 | { |
| 191 | gboolean reverse_byte_order; |
| 192 | struct LttField *eventfield; |
| 193 | int offset, size; |
| 194 | |
| 195 | if(unlikely(f->attributes & LTT_ATTRIBUTE_NETWORK_BYTE_ORDER)) { |
| 196 | reverse_byte_order = (g_ntohs(0x1) != 0x1); |
| 197 | } else { |
| 198 | reverse_byte_order = LTT_GET_BO(e->tracefile); |
| 199 | } |
| 200 | |
| 201 | eventfield = ltt_event_field(e, marker_field_get_index(f)); |
| 202 | offset = eventfield->offset; |
| 203 | size = eventfield->size; |
| 204 | switch(size) { |
| 205 | case 1: |
| 206 | { |
| 207 | gint8 x = *(gint8 *)(e->data + offset); |
| 208 | return (gint32) x; |
| 209 | } |
| 210 | break; |
| 211 | case 2: |
| 212 | return (gint32)ltt_get_int16(reverse_byte_order, e->data + offset); |
| 213 | break; |
| 214 | case 4: |
| 215 | return (gint32)ltt_get_int32(reverse_byte_order, e->data + offset); |
| 216 | break; |
| 217 | case 8: |
| 218 | default: |
| 219 | g_critical("ltt_event_get_int : field size %i unknown", size); |
| 220 | return 0; |
| 221 | break; |
| 222 | } |
| 223 | } |
| 224 | |
| 225 | guint64 ltt_event_get_long_unsigned(LttEvent *e, struct marker_field *f) |
| 226 | { |
| 227 | gboolean reverse_byte_order; |
| 228 | struct LttField *eventfield; |
| 229 | int offset, size; |
| 230 | |
| 231 | if(unlikely(f->attributes & LTT_ATTRIBUTE_NETWORK_BYTE_ORDER)) { |
| 232 | reverse_byte_order = (g_ntohs(0x1) != 0x1); |
| 233 | } else { |
| 234 | reverse_byte_order = LTT_GET_BO(e->tracefile); |
| 235 | } |
| 236 | |
| 237 | eventfield = ltt_event_field(e, marker_field_get_index(f)); |
| 238 | offset = eventfield->offset; |
| 239 | size = eventfield->size; |
| 240 | switch(size) { |
| 241 | case 1: |
| 242 | { |
| 243 | guint8 x = *(guint8 *)(e->data + offset); |
| 244 | return (guint64) x; |
| 245 | } |
| 246 | break; |
| 247 | case 2: |
| 248 | return (guint64)ltt_get_uint16(reverse_byte_order, e->data + offset); |
| 249 | break; |
| 250 | case 4: |
| 251 | return (guint64)ltt_get_uint32(reverse_byte_order, e->data + offset); |
| 252 | break; |
| 253 | case 8: |
| 254 | return ltt_get_uint64(reverse_byte_order, e->data + offset); |
| 255 | break; |
| 256 | default: |
| 257 | g_critical("ltt_event_get_long_unsigned : field size %i unknown", size); |
| 258 | return 0; |
| 259 | break; |
| 260 | } |
| 261 | } |
| 262 | |
| 263 | gint64 ltt_event_get_long_int(LttEvent *e, struct marker_field *f) |
| 264 | { |
| 265 | gboolean reverse_byte_order; |
| 266 | struct LttField *eventfield; |
| 267 | int offset, size; |
| 268 | |
| 269 | if(unlikely(f->attributes & LTT_ATTRIBUTE_NETWORK_BYTE_ORDER)) { |
| 270 | reverse_byte_order = (g_ntohs(0x1) != 0x1); |
| 271 | } else { |
| 272 | reverse_byte_order = LTT_GET_BO(e->tracefile); |
| 273 | } |
| 274 | |
| 275 | eventfield = ltt_event_field(e, marker_field_get_index(f)); |
| 276 | offset = eventfield->offset; |
| 277 | size = eventfield->size; |
| 278 | switch(size) { |
| 279 | case 1: |
| 280 | { |
| 281 | gint8 x = *(gint8 *)(e->data + offset); |
| 282 | return (gint64) x; |
| 283 | } |
| 284 | break; |
| 285 | case 2: |
| 286 | return (gint64)ltt_get_int16(reverse_byte_order, e->data + offset); |
| 287 | break; |
| 288 | case 4: |
| 289 | return (gint64)ltt_get_int32(reverse_byte_order, e->data + offset); |
| 290 | break; |
| 291 | case 8: |
| 292 | return ltt_get_int64(reverse_byte_order, e->data + offset); |
| 293 | break; |
| 294 | default: |
| 295 | g_critical("ltt_event_get_long_int : field size %i unknown", size); |
| 296 | return 0; |
| 297 | break; |
| 298 | } |
| 299 | } |
| 300 | |
| 301 | #if 0 |
| 302 | float ltt_event_get_float(LttEvent *e, struct marker_field *f) |
| 303 | { |
| 304 | gboolean reverse_byte_order; |
| 305 | struct LttField *eventfield; |
| 306 | int offset, size; |
| 307 | |
| 308 | if(unlikely(f->attributes & LTT_ATTRIBUTE_NETWORK_BYTE_ORDER)) { |
| 309 | reverse_byte_order = (g_ntohs(0x1) != 0x1); |
| 310 | } else { |
| 311 | g_assert(LTT_HAS_FLOAT(e->tracefile)); |
| 312 | reverse_byte_order = LTT_GET_FLOAT_BO(e->tracefile); |
| 313 | } |
| 314 | |
| 315 | eventfield = ltt_event_field(e, marker_field_get_index(f)); |
| 316 | offset = eventfield->offset; |
| 317 | size = eventfield->size; |
| 318 | g_assert(f->field_type.type_class == LTT_FLOAT && size == 4); |
| 319 | |
| 320 | if(reverse_byte_order == 0) return *(float *)(e->data + offset); |
| 321 | else{ |
| 322 | void *ptr = e->data + offset; |
| 323 | guint32 value = bswap_32(*(guint32*)ptr); |
| 324 | return *(float*)&value; |
| 325 | } |
| 326 | } |
| 327 | |
| 328 | double ltt_event_get_double(LttEvent *e, struct marker_field *f) |
| 329 | { |
| 330 | gboolean reverse_byte_order; |
| 331 | struct LttField *eventfield; |
| 332 | int offset, size; |
| 333 | |
| 334 | if(unlikely(f->attributes & LTT_ATTRIBUTE_NETWORK_BYTE_ORDER)) { |
| 335 | reverse_byte_order = (g_ntohs(0x1) != 0x1); |
| 336 | } else { |
| 337 | g_assert(LTT_HAS_FLOAT(e->tracefile)); |
| 338 | reverse_byte_order = LTT_GET_FLOAT_BO(e->tracefile); |
| 339 | } |
| 340 | |
| 341 | eventfield = ltt_event_field(e, marker_field_get_index(f)); |
| 342 | offset = eventfield->offset; |
| 343 | size = eventfield->size; |
| 344 | if(size == 4) |
| 345 | return ltt_event_get_float(e, f); |
| 346 | |
| 347 | g_assert(f->field_type.type_class == LTT_FLOAT && size == 8); |
| 348 | |
| 349 | if(reverse_byte_order == 0) return *(double *)(e->data + offset); |
| 350 | else { |
| 351 | void *ptr = e->data + offset; |
| 352 | guint64 value = bswap_64(*(guint64*)ptr); |
| 353 | return *(double*)&value; |
| 354 | } |
| 355 | } |
| 356 | #endif |
| 357 | |
| 358 | /***************************************************************************** |
| 359 | * The string obtained is only valid until the next read from |
| 360 | * the same tracefile. We reference directly the buffers. |
| 361 | ****************************************************************************/ |
| 362 | gchar *ltt_event_get_string(LttEvent *e, struct marker_field *f) |
| 363 | { |
| 364 | struct LttField *eventfield; |
| 365 | int offset; |
| 366 | |
| 367 | g_assert(f->type == LTT_TYPE_STRING); |
| 368 | |
| 369 | //caused memory leaks |
| 370 | //return (gchar*)g_strdup((gchar*)(e->data + f->offset)); |
| 371 | eventfield = ltt_event_field(e, marker_field_get_index(f)); |
| 372 | offset = eventfield->offset; |
| 373 | return (gchar*)(e->data + offset); |
| 374 | } |
| 375 | |
| 376 | |