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1 | #ifndef EVENT_H |
2 | #define EVENT_H |
3 | |
4 | #include <ltt/ltt.h> |
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5 | |
6 | /* Events and their content, including the raw data, are only valid |
7 | until reading another event from the same tracefile. |
8 | Indeed, since event reading is critical to the performance, |
9 | the memory associated with an event may be reused at each read. */ |
10 | |
11 | |
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12 | /* Obtain the trace unique integer id associated with the type of |
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13 | this event */ |
14 | |
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15 | unsigned ltt_event_eventtype_id(LttEvent *e); |
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16 | |
17 | |
18 | /* Facility and type for the event */ |
19 | |
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20 | LttFacility *ltt_event_facility(LttEvent *e); |
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21 | |
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22 | LttEventType *ltt_event_eventtype(LttEvent *e); |
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23 | |
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24 | |
25 | /* Root field for the event */ |
26 | |
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27 | LttField *ltt_event_field(LttEvent *e); |
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28 | |
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29 | |
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30 | /* Time and cycle count for the event */ |
31 | |
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32 | LttTime ltt_event_time(LttEvent *e); |
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33 | |
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34 | LttCycleCount ltt_event_cycle_count(LttEvent *e); |
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35 | |
36 | |
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37 | /* CPU id of the event */ |
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38 | |
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39 | unsigned ltt_event_cpu_id(LttEvent *e); |
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40 | |
41 | |
42 | /* Pointer to the raw data for the event. This should not be used directly |
43 | unless prepared to do all the architecture specific conversions. */ |
44 | |
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45 | void *ltt_event_data(LttEvent *e); |
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46 | |
47 | |
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48 | /* The number of elements in a sequence field is specific to each event |
49 | instance. This function returns the number of elements for an array or |
50 | sequence field in an event. */ |
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51 | |
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52 | unsigned ltt_event_field_element_number(LttEvent *e, LttField *f); |
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53 | |
54 | |
55 | /* Set the currently selected element for a sequence or array field. */ |
56 | |
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57 | void ltt_event_field_element_select(LttEvent *e, LttField *f, unsigned i); |
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58 | |
59 | |
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60 | /* A union is like a structure except that only a single member at a time |
61 | is present depending on the specific event instance. This function tells |
62 | the active member for a union field in an event. */ |
63 | |
64 | unsigned ltt_event_field_union_member(LttEvent *e, LttField *f); |
65 | |
66 | |
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67 | /* These functions extract data from an event after architecture specific |
68 | conversions. */ |
69 | |
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70 | unsigned ltt_event_get_unsigned(LttEvent *e, LttField *f); |
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71 | |
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72 | int ltt_event_get_int(LttEvent *e, LttField *f); |
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73 | |
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74 | unsigned long ltt_event_get_long_unsigned(LttEvent *e, LttField *f); |
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75 | |
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76 | long int ltt_event_get_long_int(LttEvent *e, LttField *f); |
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77 | |
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78 | float ltt_event_get_float(LttEvent *e, LttField *f); |
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79 | |
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80 | double ltt_event_get_double(LttEvent *e, LttField *f); |
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81 | |
82 | |
83 | /* The string obtained is only valid until the next read from |
84 | the same tracefile. */ |
85 | |
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86 | char *ltt_event_get_string(LttEvent *e, LttField *f); |
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87 | |
88 | #endif // EVENT_H |