-/*****************************************************************************
- *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;i<seqnum;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_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;i<field->field_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;i<type->element_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;i<type->element_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; i<type->size; 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; i<ltt_event_field_element_number(&tf->event, 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; i<type->fields->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; i<type->fields->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; i<event->fields->len; i++) {
- LttField *field = &g_array_index(event->fields, LttField, i);
- ret = compute_fields_offsets(tf, field, offset, root);
- if(ret) break;
- }
-
-}
-