| 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 | |
| 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 | |
| 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 | |
| 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 | { |
| 72 | ep->tracefile = e->tracefile; |
| 73 | ep->block = e->block; |
| 74 | ep->offset = e->offset; |
| 75 | ep->tsc = e->tsc; |
| 76 | } |
| 77 | |
| 78 | LttEventPosition * ltt_event_position_new() |
| 79 | { |
| 80 | return g_new(LttEventPosition, 1); |
| 81 | } |
| 82 | |
| 83 | |
| 84 | /***************************************************************************** |
| 85 | * Function name |
| 86 | * ltt_event_position_compare : compare two positions |
| 87 | * A NULL value is infinite. |
| 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 | { |
| 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; |
| 107 | |
| 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) |
| 112 | return -1; |
| 113 | if(ep1->block > ep2->block) |
| 114 | return 1; |
| 115 | if(ep1->offset < ep2->offset) |
| 116 | return -1; |
| 117 | if(ep1->offset > ep2->offset) |
| 118 | return 1; |
| 119 | return 0; |
| 120 | } |
| 121 | |
| 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 | { |
| 134 | if(src == NULL) |
| 135 | dest = NULL; |
| 136 | else |
| 137 | *dest = *src; |
| 138 | } |
| 139 | |
| 140 | |
| 141 | |
| 142 | LttTracefile *ltt_event_position_tracefile(LttEventPosition *ep) |
| 143 | { |
| 144 | return ep->tracefile; |
| 145 | } |
| 146 | |
| 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; |
| 154 | |
| 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 | |