X-Git-Url: https://git.lttng.org/?a=blobdiff_plain;f=ltt%2Fbranches%2Fpoly%2Fltt%2Fevent.c;h=53a2b2ec3c532a80adea94c3a2fb6dbb484e96fb;hb=f104d082727461632e7a5cc1d2a854f0ad66db07;hp=7ef6737728bbba7cbeebd9ee8cc58f81205fd019;hpb=80da81adfa88158bd3d4c26f89f96f8b58c77b4f;p=lttv.git diff --git a/ltt/branches/poly/ltt/event.c b/ltt/branches/poly/ltt/event.c index 7ef67377..53a2b2ec 100644 --- a/ltt/branches/poly/ltt/event.c +++ b/ltt/branches/poly/ltt/event.c @@ -1,28 +1,128 @@ +/* This file is part of the Linux Trace Toolkit viewer + * Copyright (C) 2003-2004 Xiangxiu Yang + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License Version 2 as + * published by the Free Software Foundation; + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place - Suite 330, Boston, + * MA 02111-1307, USA. + */ + +#ifdef HAVE_CONFIG_H +#include +#endif + #include +#include +#include +#include + #include -#include -#include +#include + #include "parser.h" +#include +#include "ltt-private.h" #include +#include +#include + +LttEvent *ltt_event_new() +{ + return g_new(LttEvent, 1); +} +void ltt_event_destroy(LttEvent *event) +{ + g_free(event); +} + + +#if 0 +/* Use get_field_type_size instead */ /***************************************************************************** *Function name * ltt_event_refresh_fields : refresh fields of an event *Input params * offsetRoot : offset from the root - * offsetParent : offset from the parrent + * offsetParent : offset from the parent * fld : field * evD : event data + * reverse_byte_order : 1 or 0 *Return value * int : size of the field ****************************************************************************/ int ltt_event_refresh_fields(int offsetRoot,int offsetParent, - LttField * fld, void *evD) + LttField * fld, void *evD, gboolean reverse_byte_order) { int size, size1, element_number, i, offset1, offset2; LttType * type = fld->field_type; + switch(type->type_class) { + case LTT_ARRAY: + element_number = (int) type->element_number; + if(fld->field_fixed == 0){// has string or sequence + size = 0; + for(i=0;ichild[0], evD+size, reverse_byte_order); + } + }else size = fld->field_size; + break; + + case LTT_SEQUENCE: + size1 = fld->sequ_number_size; + element_number = getIntNumber(reverse_byte_order,size1,evD); + type->element_number = element_number; + if(fld->element_size > 0){ + size = element_number * fld->element_size; + }else{//sequence has string or sequence + size = 0; + for(i=0;ichild[0], evD+size+size1, reverse_byte_order); + } + size += size1; + } + break; + + case LTT_STRING: + size = strlen((gchar*)evD) + 1; //include end : '\0' + break; + + case LTT_STRUCT: + element_number = (int) type->element_number; + if(fld->field_fixed == 0){ + offset1 = offsetRoot; + offset2 = 0; + for(i=0;ichild[i],evD+offset2, reverse_byte_order); + offset1 += size; + offset2 += size; + } + size = offset2; + }else size = fld->field_size; + break; + + case LTT_UNION: + size = fld->field_size; + break; + + default: + size = fld->field_size; + } + +#if 0 if(type->type_class != LTT_STRUCT && type->type_class != LTT_ARRAY && type->type_class != LTT_SEQUENCE && type->type_class != LTT_STRING){ size = fld->field_size; @@ -31,9 +131,9 @@ int ltt_event_refresh_fields(int offsetRoot,int offsetParent, if(fld->field_fixed == 0){// has string or sequence size = 0; for(i=0;ichild[0], evD+size); - } + } }else size = fld->field_size; }else if(type->type_class == LTT_SEQUENCE){ size1 = fld->sequ_number_size; @@ -44,8 +144,8 @@ int ltt_event_refresh_fields(int offsetRoot,int offsetParent, }else{//sequence has string or sequence size = 0; for(i=0;ichild[0], evD+size+size1); + size += ltt_event_refresh_fields(offsetRoot+size+size1,size+size1, + fld->child[0], evD+size+size1); } size += size1; } @@ -57,14 +157,15 @@ int ltt_event_refresh_fields(int offsetRoot,int offsetParent, offset1 = offsetRoot; offset2 = 0; for(i=0;ichild[i],evD+offset2); - offset1 += size; - offset2 += size; + size=ltt_event_refresh_fields(offset1,offset2, + fld->child[i],evD+offset2); + offset1 += size; + offset2 += size; } size = offset2; }else size = fld->field_size; } - +#endif //0 fld->offset_root = offsetRoot; fld->offset_parent = offsetParent; fld->fixed_root = (offsetRoot==-1) ? 0 : 1; @@ -73,6 +174,8 @@ int ltt_event_refresh_fields(int offsetRoot,int offsetParent, return size; } +#endif //0 + /***************************************************************************** *Function name @@ -84,7 +187,7 @@ int ltt_event_refresh_fields(int offsetRoot,int offsetParent, * unsigned : event type id ****************************************************************************/ -unsigned ltt_event_eventtype_id(LttEvent *e) +unsigned ltt_event_eventtype_id(const LttEvent *e) { return (unsigned) e->event_id; } @@ -98,11 +201,29 @@ unsigned ltt_event_eventtype_id(LttEvent *e) * LttFacility * : the facility of the event ****************************************************************************/ -LttFacility *ltt_event_facility(LttEvent *e) +LttFacility *ltt_event_facility(const LttEvent *e) { LttTrace * trace = e->tracefile->trace; - unsigned id = e->event_id; - return ltt_trace_facility_by_id(trace,id); + unsigned id = e->facility_id; + LttFacility *facility = ltt_trace_facility_by_id(trace,id); + + g_assert(facility->exists); + + return facility; +} + +/***************************************************************************** + *Function name + * ltt_event_facility_id : get the facility id of the event + *Input params + * e : an instance of an event type + *Return value + * unsigned : the facility of the event + ****************************************************************************/ + +unsigned ltt_event_facility_id(const LttEvent *e) +{ + return e->facility_id; } /***************************************************************************** @@ -114,43 +235,31 @@ LttFacility *ltt_event_facility(LttEvent *e) * LttEventType * : the event type of the event ****************************************************************************/ -LttEventType *ltt_event_eventtype(LttEvent *e) +LttEventType *ltt_event_eventtype(const LttEvent *e) { LttFacility* facility = ltt_event_facility(e); if(!facility) return NULL; - return facility->events[e->event_id - facility->base_id]; + return &g_array_index(facility->events, LttEventType, e->event_id); } /***************************************************************************** *Function name * ltt_event_field : get the root field of the event *Input params - * e : an instance of an event type + * e : an instance of an event type + * name : field name *Return value - * LttField * : the root field of the event + * LttField * : The requested field, or NULL ****************************************************************************/ -LttField *ltt_event_field(LttEvent *e) +LttField *ltt_event_field(LttEvent *e, GQuark name) { LttField * field; LttEventType * event_type = ltt_event_eventtype(e); - if(!event_type) return NULL; - field = event_type->root_field; - if(!field) return NULL; - - //check if the field need refresh - if(e->which_block != event_type->latest_block || - e->which_event != event_type->latest_event){ - - event_type->latest_block = e->which_block; - event_type->latest_event = e->which_event; - - if(field->field_fixed == 1)return field; + if(unlikely(!event_type)) return NULL; - //refresh the field - ltt_event_refresh_fields(0, 0, field, e->data); - } - return field; + return (LttField*)g_datalist_id_get_data(&event_type->fields_by_name, name); + } /***************************************************************************** @@ -162,7 +271,7 @@ LttField *ltt_event_field(LttEvent *e) * LttTime : the time of the event ****************************************************************************/ -LttTime ltt_event_time(LttEvent *e) +LttTime ltt_event_time(const LttEvent *e) { return e->event_time; } @@ -176,11 +285,34 @@ LttTime ltt_event_time(LttEvent *e) * LttCycleCount : the cycle count of the event ****************************************************************************/ -LttCycleCount ltt_event_cycle_count(LttEvent *e) +LttCycleCount ltt_event_cycle_count(const LttEvent *e) +{ + return e->tsc; +} + + + +/***************************************************************************** + *Function name + * ltt_event_position_get : get the event position data + *Input params + * e : an instance of an event type + * ep : a pointer to event's position structure + * tf : tracefile pointer + * block : current block + * offset : current offset + * tsc : current tsc + ****************************************************************************/ +void ltt_event_position_get(LttEventPosition *ep, LttTracefile **tf, + guint *block, guint *offset, guint64 *tsc) { - return e->event_cycle_count; + *tf = ep->tracefile; + *block = ep->block; + *offset = ep->offset; + *tsc = ep->tsc; } + /***************************************************************************** *Function name * ltt_event_position : get the event's position @@ -191,45 +323,79 @@ LttCycleCount ltt_event_cycle_count(LttEvent *e) void ltt_event_position(LttEvent *e, LttEventPosition *ep) { - ep->block_num = e->which_block; - ep->event_num = e->which_event; - ep->event_time = e->event_time; - ep->event_cycle_count = e->event_cycle_count; - ep->heart_beat_number = e->tracefile->cur_heart_beat_number; - ep->old_position = TRUE; - ep->event_offset = e->data - e->tracefile->buffer - EVENT_HEADER_SIZE ; + ep->tracefile = e->tracefile; + ep->block = e->block; + ep->offset = e->offset; + ep->tsc = e->tsc; +} + +LttEventPosition * ltt_event_position_new() +{ + return g_new(LttEventPosition, 1); } + /***************************************************************************** - *Function name - * ltt_event_position_get : get the block number and index of the event - *Input params - * ep : a pointer to event's position structure - * block_number : the block number of the event - * index_in_block : the index of the event within the block + * Function name + * ltt_event_position_compare : compare two positions + * A NULL value is infinite. + * Input params + * ep1 : a pointer to event's position structure + * ep2 : a pointer to event's position structure + * Return + * -1 is ep1 < ep2 + * 1 if ep1 > ep2 + * 0 if ep1 == ep2 ****************************************************************************/ -void ltt_event_position_get(LttEventPosition *ep, - unsigned *block_number, unsigned *index_in_block) + +gint ltt_event_position_compare(const LttEventPosition *ep1, + const LttEventPosition *ep2) { - *block_number = ep->block_num; - *index_in_block = ep->event_num; + if(ep1 == NULL && ep2 == NULL) + return 0; + if(ep1 != NULL && ep2 == NULL) + return -1; + if(ep1 == NULL && ep2 != NULL) + return 1; + + if(ep1->tracefile != ep2->tracefile) + g_error("ltt_event_position_compare on different tracefiles makes no sense"); + + if(ep1->block < ep2->block) + return -1; + if(ep1->block > ep2->block) + return 1; + if(ep1->offset < ep2->offset) + return -1; + if(ep1->offset > ep2->offset) + return 1; + return 0; } /***************************************************************************** - *Function name - * ltt_event_position_set : set the block number and index of the event - *Input params - * ep : a pointer to event's position structure - * block_number : the block number of the event - * index_in_block : the index of the event within the block + * Function name + * ltt_event_position_copy : copy position + * Input params + * src : a pointer to event's position structure source + * dest : a pointer to event's position structure dest + * Return + * void ****************************************************************************/ +void ltt_event_position_copy(LttEventPosition *dest, + const LttEventPosition *src) +{ + if(src == NULL) + dest = NULL; + else + *dest = *src; +} + + -void ltt_event_position_set(LttEventPosition *ep, - unsigned block_number, unsigned index_in_block) +LttTracefile *ltt_event_position_tracefile(LttEventPosition *ep) { - ep->block_num = block_number; - ep->event_num = index_in_block; + return ep->tracefile; } /***************************************************************************** @@ -242,8 +408,8 @@ void ltt_event_position_set(LttEventPosition *ep, ****************************************************************************/ unsigned ltt_event_cpu_id(LttEvent *e) -{ - return (unsigned)atoi(e->tracefile->name); +{ + return e->tracefile->cpu_num; } /***************************************************************************** @@ -272,16 +438,15 @@ void *ltt_event_data(LttEvent *e) *Return value * unsigned : the number of elements for an array/sequence field ****************************************************************************/ - -unsigned ltt_event_field_element_number(LttEvent *e, LttField *f) +guint64 ltt_event_field_element_number(LttEvent *e, LttField *f) { if(f->field_type->type_class != LTT_ARRAY && f->field_type->type_class != LTT_SEQUENCE) return 0; if(f->field_type->type_class == LTT_ARRAY) - return f->field_type->element_number; - return (unsigned) getIntNumber(f->sequ_number_size, e + f->offset_root); + return f->field_type->size; + return ltt_get_long_unsigned(e, &g_array_index(f->fields, LttField, 0)); } /***************************************************************************** @@ -289,169 +454,186 @@ unsigned ltt_event_field_element_number(LttEvent *e, LttField *f) * ltt_event_field_element_select * : Set the currently selected element for a sequence or * array field + * O(1) because of offset array. *Input params * e : an instance of an event type * f : a field of the instance - * i : the ith element + * i : the ith element (0, ...) + *returns : the child field, at the right index, updated. ****************************************************************************/ - -void ltt_event_field_element_select(LttEvent *e, LttField *f, unsigned i) +LttField *ltt_event_field_element_select(LttEvent *e, LttField *f, gulong i) { - unsigned element_number; - LttField *fld; - int k, size; - void *evD; + gulong element_number; + LttField *field; + unsigned int k; + size_t size; + LttEventType *event_type; + off_t new_offset; if(f->field_type->type_class != LTT_ARRAY && f->field_type->type_class != LTT_SEQUENCE) return ; element_number = ltt_event_field_element_number(e,f); - if((element_number-1) < i || i < 0) return; - - fld = f->child[0]; - - evD = e->data + f->offset_root; - size = 0; - for(k=0;koffset_root+size,size, fld, evD+size); + event_type = ltt_event_eventtype(e); + /* Sanity check for i : 0..n-1 only, and must be lower or equal element_number + */ + if(i >= element_number) return; + + if(f->field_type->type_class == LTT_ARRAY) { + field = &g_array_index(f->fields, LttField, 0); + } else { + field = &g_array_index(f->fields, LttField, 1); + } + + if(field->field_size != 0) { + if(f->array_offset + (i * field->field_size) == field->offset_root) + return; /* fixed length child, already at the right offset */ + else + new_offset = f->array_offset + (i * field->field_size); + } else { + /* Var. len. child */ + new_offset = g_array_index(f->dynamic_offsets, off_t, i); } + compute_fields_offsets(e->tracefile, field, new_offset); - f->current_element = i - 1; + return field; } /***************************************************************************** * These functions extract data from an event after architecture specific * conversions ****************************************************************************/ - -unsigned ltt_event_get_unsigned(LttEvent *e, LttField *f) +guint32 ltt_event_get_unsigned(LttEvent *e, LttField *f) { - int revFlag = e->tracefile->trace->my_arch_endian == - e->tracefile->trace->system_description->endian ? 0:1; + gboolean reverse_byte_order = LTT_GET_BO(e->tracefile); + LttTypeEnum t = f->field_type->type_class; - if(t != LTT_UINT && t != LTT_ENUM) - g_error("The type of the field is not unsigned int\n"); + g_assert(t == LTT_UINT || t == LTT_ENUM); if(f->field_size == 1){ - uint8_t x = *(uint8_t*)(e->data + f->offset_root); - return (unsigned int) x; + guint8 x = *(guint8 *)(e->data + f->offset_root); + return (guint32) x; }else if(f->field_size == 2){ - uint16_t x = *(uint16_t*)(e->data + f->offset_root); - return (unsigned int) (revFlag ? BREV16(x): x); + return (guint32)ltt_get_uint16(reverse_byte_order, e->data + f->offset_root); }else if(f->field_size == 4){ - uint32_t x = *(uint32_t*)(e->data + f->offset_root); - return (unsigned int) (revFlag ? BREV32(x): x); - }else if(f->field_size == 8){ - uint64_t x = *(uint64_t*)(e->data + f->offset_root); - return (unsigned int) (revFlag ? BREV64(x): x); + return (guint32)ltt_get_uint32(reverse_byte_order, e->data + f->offset_root); + } +#if 0 + else if(f->field_size == 8){ + guint64 x = *(guint64 *)(e->data + f->offset_root); + if(e->tracefile->trace->my_arch_endian == LTT_LITTLE_ENDIAN) + return (unsigned int) (revFlag ? GUINT64_FROM_BE(x): x); + else + return (unsigned int) (revFlag ? GUINT64_FROM_LE(x): x); } +#endif //0 + g_critical("ltt_event_get_unsigned : field size %i unknown", f->field_size); + return 0; } -int ltt_event_get_int(LttEvent *e, LttField *f) +gint32 ltt_event_get_int(LttEvent *e, LttField *f) { - int revFlag = e->tracefile->trace->my_arch_endian == - e->tracefile->trace->system_description->endian ? 0:1; + gboolean reverse_byte_order = LTT_GET_BO(e->tracefile); - if(f->field_type->type_class != LTT_INT) - g_error("The type of the field is not int\n"); + g_assert(f->field_type->type_class == LTT_INT); if(f->field_size == 1){ - int8_t x = *(int8_t*)(e->data + f->offset_root); - return (int) x; + gint8 x = *(gint8 *)(e->data + f->offset_root); + return (gint32) x; }else if(f->field_size == 2){ - int16_t x = *(int16_t*)(e->data + f->offset_root); - return (int) (revFlag ? BREV16(x): x); + return (gint32)ltt_get_int16(reverse_byte_order, e->data + f->offset_root); }else if(f->field_size == 4){ - int32_t x = *(int32_t*)(e->data + f->offset_root); - return (int) (revFlag ? BREV32(x): x); - }else if(f->field_size == 8){ - int64_t x = *(int64_t*)(e->data + f->offset_root); - return (int) (revFlag ? BREV64(x): x); + return (gint32)ltt_get_int32(reverse_byte_order, e->data + f->offset_root); } +#if 0 + else if(f->field_size == 8){ + gint64 x = *(gint64 *)(e->data + f->offset_root); + if(e->tracefile->trace->my_arch_endian == LTT_LITTLE_ENDIAN) + return (int) (revFlag ? GINT64_FROM_BE(x): x); + else + return (int) (revFlag ? GINT64_FROM_LE(x): x); + } +#endif //0 + g_critical("ltt_event_get_int : field size %i unknown", f->field_size); + return 0; } -unsigned long ltt_event_get_long_unsigned(LttEvent *e, LttField *f) +guint64 ltt_event_get_long_unsigned(LttEvent *e, LttField *f) { - int revFlag = e->tracefile->trace->my_arch_endian == - e->tracefile->trace->system_description->endian ? 0:1; + gboolean reverse_byte_order = LTT_GET_BO(e->tracefile); + LttTypeEnum t = f->field_type->type_class; - if(t != LTT_UINT && t != LTT_ENUM) - g_error("The type of the field is not unsigned long\n"); + g_assert(t == LTT_UINT || t == LTT_ENUM + || t == LTT_ULONG || LTT_SIZE_T || LTT_OFF_T || LTT_POINTER); if(f->field_size == 1){ - uint8_t x = *(uint8_t*)(e->data + f->offset_root); - return (unsigned long) x; + guint8 x = *(guint8 *)(e->data + f->offset_root); + return (guint64) x; }else if(f->field_size == 2){ - uint16_t x = *(uint16_t*)(e->data + f->offset_root); - return (unsigned long) (revFlag ? BREV16(x): x); + return (guint64)ltt_get_uint16(reverse_byte_order, e->data + f->offset_root); }else if(f->field_size == 4){ - uint32_t x = *(uint32_t*)(e->data + f->offset_root); - return (unsigned long) (revFlag ? BREV32(x): x); + return (guint64)ltt_get_uint32(reverse_byte_order, e->data + f->offset_root); }else if(f->field_size == 8){ - uint64_t x = *(uint64_t*)(e->data + f->offset_root); - return (unsigned long) (revFlag ? BREV64(x): x); + return ltt_get_uint64(reverse_byte_order, e->data + f->offset_root); } + g_critical("ltt_event_get_long_unsigned : field size %i unknown", f->field_size); + return 0; } -long int ltt_event_get_long_int(LttEvent *e, LttField *f) +gint64 ltt_event_get_long_int(LttEvent *e, LttField *f) { - int revFlag = e->tracefile->trace->my_arch_endian == - e->tracefile->trace->system_description->endian ? 0:1; + //int revFlag = e->tracefile->trace->my_arch_endian == + // e->tracefile->trace->system_description->endian ? 0:1; + gboolean reverse_byte_order = LTT_GET_BO(e->tracefile); - if( f->field_type->type_class != LTT_INT) - g_error("The type of the field is not long int\n"); + g_assert( f->field_type->type_class == LTT_INT + || f->field_type->type_class == LTT_LONG + || f->field_type->type_class == LTT_SSIZE_T); if(f->field_size == 1){ - int8_t x = *(int8_t*)(e->data + f->offset_root); - return (long) x; + gint8 x = *(gint8 *)(e->data + f->offset_root); + return (gint64) x; }else if(f->field_size == 2){ - int16_t x = *(int16_t*)(e->data + f->offset_root); - return (long) (revFlag ? BREV16(x): x); + return (gint64)ltt_get_int16(reverse_byte_order, e->data + f->offset_root); }else if(f->field_size == 4){ - int32_t x = *(int32_t*)(e->data + f->offset_root); - return (long) (revFlag ? BREV32(x): x); + return (gint64)ltt_get_int32(reverse_byte_order, e->data + f->offset_root); }else if(f->field_size == 8){ - int64_t x = *(int64_t*)(e->data + f->offset_root); - return (long) (revFlag ? BREV64(x): x); + return ltt_get_int64(reverse_byte_order, e->data + f->offset_root); } + g_critical("ltt_event_get_long_int : field size %i unknown", f->field_size); + return 0; } float ltt_event_get_float(LttEvent *e, LttField *f) { - int revFlag = e->tracefile->trace->my_arch_endian == - e->tracefile->trace->system_description->endian ? 0:1; + g_assert(LTT_HAS_FLOAT(e->tracefile)); + gboolean reverse_byte_order = LTT_GET_FLOAT_BO(e->tracefile); - if(f->field_type->type_class != LTT_FLOAT || - (f->field_type->type_class == LTT_FLOAT && f->field_size != 4)) - g_error("The type of the field is not float\n"); + g_assert(f->field_type->type_class == LTT_FLOAT && f->field_size == 4); - if(revFlag == 0) return *(float *)(e->data + f->offset_root); + if(reverse_byte_order == 0) return *(float *)(e->data + f->offset_root); else{ - uint32_t aInt; - memcpy((void*)&aInt, e->data + f->offset_root, 4); - aInt = ___swab32(aInt); - return *((float*)&aInt); + void *ptr = e->data + f->offset_root; + guint32 value = bswap_32(*(guint32*)ptr); + return *(float*)&value; } } double ltt_event_get_double(LttEvent *e, LttField *f) { - int revFlag = e->tracefile->trace->my_arch_endian == - e->tracefile->trace->system_description->endian ? 0:1; + g_assert(LTT_HAS_FLOAT(e->tracefile)); + gboolean reverse_byte_order = LTT_GET_FLOAT_BO(e->tracefile); - if(f->field_type->type_class != LTT_FLOAT || - (f->field_type->type_class == LTT_FLOAT && f->field_size != 8)) - g_error("The type of the field is not double\n"); + g_assert(f->field_type->type_class == LTT_FLOAT && f->field_size == 8); - if(revFlag == 0) return *(double *)(e->data + f->offset_root); - else{ - uint64_t aInt; - memcpy((void*)&aInt, e->data + f->offset_root, 8); - aInt = ___swab64(aInt); - return *((double *)&aInt); + if(reverse_byte_order == 0) return *(double *)(e->data + f->offset_root); + else { + void *ptr = e->data + f->offset_root; + guint64 value = bswap_64(*(guint64*)ptr); + return *(double*)&value; } } @@ -459,10 +641,353 @@ double ltt_event_get_double(LttEvent *e, LttField *f) * The string obtained is only valid until the next read from * the same tracefile. ****************************************************************************/ - char *ltt_event_get_string(LttEvent *e, LttField *f) { - if(f->field_type->type_class != LTT_STRING) - g_error("The field contains no string\n"); - return (char*)g_strdup((char*)(e->data + f->offset_root)); + g_assert(f->field_type->type_class == LTT_STRING); + + return (gchar*)g_strdup((gchar*)(e->data + f->offset_root)); +} + + +/***************************************************************************** + *Function name + * get_field_type_size : set the fixed and dynamic sizes of the field type + * from the data read. + *Input params + * tf : tracefile + * event_type : event type + * offset_root : offset from the root + * offset_parent : offset from the parent + * field : field + * data : a pointer to the event data. + *Returns the field type size. + ****************************************************************************/ + // TODO +// Change this function so it uses a *to offset value incrementation, just like +// genevent-new instead of returning a size. What is of interest here is the +// offset needed to read each field. +// +// Precomputed ones can be returned directly. Otherwise, the field is flagged +// "VARIABLE OFFSET" and must be computed dynamically. The dynamic processing +// of an offset takes the last known fixed offset, and then dynamically +// calculates all variable field offsets from it. +// +// After a VARIABLE SIZE element, all fields have a variable offset. +// Also, is an array or a sequence has variable length child, we must pass +// through all of them, saving the offsets in the dynamic_offsets array. + +#if 0 +size_t get_field_type_size(LttTracefile *tf, LttEventType *event_type, + off_t offset_root, off_t offset_parent, + LttField *field, void *data) +{ + size_t size = 0; + guint i; + LttType *type; + off_t align; + + g_assert(field->fixed_root != FIELD_UNKNOWN); + g_assert(field->fixed_parent != FIELD_UNKNOWN); + g_assert(field->fixed_size != FIELD_UNKNOWN); + + field->offset_root = offset_root; + field->offset_parent = offset_parent; + + type = field->field_type; + + switch(type->type_class) { + case LTT_INT: + case LTT_UINT: + case LTT_FLOAT: + case LTT_ENUM: + case LTT_POINTER: + case LTT_LONG: + case LTT_ULONG: + case LTT_SIZE_T: + case LTT_SSIZE_T: + case LTT_OFF_T: + g_assert(field->fixed_size == FIELD_FIXED); + size = field->field_size; + align = ltt_align(field->offset_root, + size, event_type->facility->has_alignment); + field->offset_root += align; + field->offset_parent += align; + size += align; + break; + case LTT_SEQUENCE: + { + /* FIXME : check the type of sequence identifier */ + gint seqnum = ltt_get_uint(LTT_GET_BO(tf), + field->sequ_number_size, + data + offset_root); + + if(field->child[0]->fixed_size == FIELD_FIXED) { + size = field->sequ_number_size + + (seqnum * get_field_type_size(tf, event_type, + offset_root, offset_parent, + field->child[0], data)); + } else { + size += field->sequ_number_size; + for(i=0;ichild[0], data); + offset_root += child_size; + offset_parent += child_size; + size += child_size; + } + } + field->field_size = size; + } + break; + case LTT_STRING: + size = strlen((char*)(data+offset_root)) + 1;// length + \0 + field->field_size = size; + break; + case LTT_ARRAY: + if(field->fixed_size == FIELD_FIXED) + size = field->field_size; + else { + for(i=0;ifield_type->element_number;i++) { + size_t child_size; + child_size = get_field_type_size(tf, event_type, + offset_root, offset_parent, + field->child[0], data); + offset_root += child_size; + offset_parent += child_size; + size += child_size; + } + field->field_size = size; + } + break; + case LTT_STRUCT: + if(field->fixed_size == FIELD_FIXED) + size = field->field_size; + else { + size_t current_root_offset = offset_root; + size_t current_offset = 0; + size_t child_size = 0; + for(i=0;ielement_number;i++) { + child_size = get_field_type_size(tf, + event_type, current_root_offset, current_offset, + field->child[i], data); + current_offset += child_size; + current_root_offset += child_size; + + } + size = current_offset; + field->field_size = size; + } + break; + case LTT_UNION: + if(field->fixed_size == FIELD_FIXED) + size = field->field_size; + else { + size_t current_root_offset = field->offset_root; + size_t current_offset = 0; + for(i=0;ielement_number;i++) { + size = get_field_type_size(tf, event_type, + current_root_offset, current_offset, + field->child[i], data); + size = max(size, field->child[i]->field_size); + } + field->field_size = size; + } + break; + } + + return size; +} +#endif //0 + + + + + +/***************************************************************************** + *Function name + * compute_fields_offsets : set the precomputable offset of the fields + *Input params + * tf : tracefile + * field : the field + * offset : pointer to the current offset, must be incremented + ****************************************************************************/ + + +void compute_fields_offsets(LttTracefile *tf, LttField *field, off_t *offset, + void *root) +{ + type = &field->field_type; + + switch(type->type_class) { + case LTT_INT_FIXED: + case LTT_UINT_FIXED: + case LTT_POINTER: + case LTT_CHAR: + case LTT_UCHAR: + case LTT_SHORT: + case LTT_USHORT: + case LTT_INT: + case LTT_UINT: + case LTT_LONG: + case LTT_ULONG: + case LTT_SIZE_T: + case LTT_SSIZE_T: + case LTT_OFF_T: + case LTT_FLOAT: + case LTT_ENUM: + if(field->fixed_root == FIELD_VARIABLE) { + /* Align offset on type size */ + *offset += ltt_align(*offset, get_alignment(tf, field), + tf->has_alignment); + /* remember offset */ + field->offset_root = *offset; + /* Increment offset */ + *offset += field->field_size; + } + /* None of these types has variable size, so we are sure that if + * this element has a fixed_root, then the following one will have + * a fixed root too, so it does not need the *offset at all. + */ + break; + case LTT_STRING: + if(field->fixed_root == FIELD_VARIABLE) { + field->offset_root = *offset; + } + *offset += strlen((gchar*)(root+*offset)) + 1; + break; + case LTT_ARRAY: + g_assert(type->fields->len == 1); + { + off_t local_offset; + LttField *child = &g_array_index(type->fields, LttField, 0); + if(field->fixed_root == FIELD_VARIABLE) { + *offset += ltt_align(*offset, get_alignment(tf, field), + tf->has_alignment); + /* remember offset */ + field->offset_root = *offset; + field->array_offset = *offset; + } + + if(field->field_size != 0) { + /* Increment offset */ + /* field_size is the array size in bytes */ + *offset = field->offset_root + field->field_size; + } else { + guint i; + *offset = field->array_offset; + field->dynamic_offsets = g_array_set_size(field->dynamic_offsets, + 0); + for(i=0; isize; i++) { + g_array_append_val(field->dynamic_offsets, *offset); + compute_fields_offsets(tf, child, offset); + } + } + // local_offset = field->array_offset; + // /* Set the offset at position 0 */ + // compute_fields_offsets(tf, child, &local_offset); + break; + case LTT_SEQUENCE: + g_assert(type->fields->len == 2); + { + off_t local_offset; + LttField *child; + guint i; + if(field->fixed_root == FIELD_VARIABLE) { + *offset += ltt_align(*offset, get_alignment(tf, field), + tf->has_alignment); + /* remember offset */ + field->offset_root = *offset; + + child = &g_array_index(type->fields, LttField, 0); + compute_fields_offsets(tf, child, offset); + child = &g_array_index(type->fields, LttField, 1); + *offset += ltt_align(*offset, get_alignment(tf, child), + tf->has_alignment); + field->array_offset = *offset; + + } else { + child = &g_array_index(type->fields, LttField, 1); + } + *offset = field->array_offset; + field->dynamic_offsets = g_array_set_size(field->dynamic_offsets, + 0); + for(i=0; ievent, field); i++) { + g_array_append_val(field->dynamic_offsets, *offset); + compute_fields_offsets(tf, child, offset); + } + // local_offset = field->array_offset; + // /* Set the offset at position 0 */ + // compute_fields_offsets(tf, child, &local_offset); + } + break; + case LTT_STRUCT: + { + LttField *child; + guint i; + gint ret=0; + if(field->fixed_root == FIELD_VARIABLE) { + *offset += ltt_align(*offset, get_alignment(tf, field), + tf->has_alignment); + /* remember offset */ + field->offset_root = *offset; + } else { + *offset = field->offset_root; + } + for(i=0; ifields->len; i++) { + child = &g_array_index(type->fields, LttField, i); + compute_fields_offsets(tf, child, offset); + } + } + break; + case LTT_UNION: + { + LttField *child; + guint i; + gint ret=0; + if(field->fixed_root == FIELD_VARIABLE) { + *offset += ltt_align(*offset, get_alignment(tf, field), + tf->has_alignment); + /* remember offset */ + field->offset_root = *offset; + } + for(i=0; ifields->len; i++) { + *offset = field->offset_root; + child = &g_array_index(type->fields, LttField, i); + compute_fields_offsets(tf, child, offset); + } + *offset = field->offset_root + field->field_size; + } + break; + case LTT_NONE: + default: + g_error("compute_fields_offsets : unknown type"); + } + +} + + +/***************************************************************************** + *Function name + * compute_offsets : set the dynamically computable offsets of an event type + *Input params + * tf : tracefile + * event : event type + * + ****************************************************************************/ +void compute_offsets(LttTracefile *tf, LttEventType *event, size_t *offset, + void *root) +{ + guint i; + gint ret; + + /* compute all variable offsets */ + for(i=0; ifields->len; i++) { + LttField *field = &g_array_index(event->fields, LttField, i); + ret = compute_fields_offsets(tf, field, offset, root); + if(ret) break; + } + } +