| c5d77517 |
1 | #ifndef TRACE_H |
| 2 | #define TRACE_H |
| 3 | |
| 4 | /* A trace is a sequence of events gathered in the same tracing session. The |
| 5 | events may be stored in several tracefiles in the same directory. |
| 6 | A trace set is defined when several traces are to be analyzed together, |
| 7 | possibly to study the interactions between events in the different traces. |
| 8 | */ |
| 9 | |
| 10 | typedef struct _lttv_trace_set lttv_trace_set; |
| 11 | |
| 12 | typedef struct _lttv_trace lttv_trace; |
| 13 | |
| 14 | typedef struct _lttv_tracefile lttv_tracefile; |
| 15 | |
| 16 | |
| 17 | /* Trace sets may be added to, removed from and their content listed. */ |
| 18 | |
| 19 | lttv_trace_set *lttv_trace_set_new(); |
| 20 | |
| 21 | lttv_trace_set *lttv_trace_set_destroy(lttv_trace_set *s); |
| 22 | |
| 23 | void lttv_trace_set_add(lttv_trace_set *s, lttv_trace *t); |
| 24 | |
| 25 | unsigned lttv_trace_set_number(lttv_trace_set *s); |
| 26 | |
| 27 | lttv_trace *lttv_trace_set_get(lttv_trace_set *s, unsigned i); |
| 28 | |
| 29 | lttv_trace *lttv_trace_set_remove(lttv_trace_set *s, unsigned i); |
| 30 | |
| 31 | |
| 32 | /* A trace is identified by the pathname of its containing directory */ |
| 33 | |
| 34 | lttv_trace *lttv_trace_open(char *pathname); |
| 35 | |
| 36 | int lttv_trace_close(lttv_trace *t); |
| 37 | |
| 38 | char *lttv_trace_name(lttv_trace *t); |
| 39 | |
| 40 | |
| 41 | /* A trace typically contains one tracefile with important events |
| 42 | (for all CPUs), and one tracefile with ordinary events per cpu. |
| 43 | The tracefiles in a trace may be enumerated for each category |
| 44 | (all cpu and per cpu). The total number of tracefiles and of CPUs |
| 45 | may also be obtained. */ |
| 46 | |
| 47 | unsigned int lttv_trace_tracefile_number(lttv_trace *t); |
| 48 | |
| 49 | unsigned int lttv_trace_cpu_number(lttv_trace *t); |
| 50 | |
| 51 | unsigned int lttv_trace_tracefile_number_per_cpu(lttv_trace *t); |
| 52 | |
| 53 | unsigned int lttv_trace_tracefile_number_all_cpu(lttv_trace *t); |
| 54 | |
| 55 | lttv_tracefile *lttv_trace_tracefile_get_per_cpu(lttv_trace *t, unsigned i); |
| 56 | |
| 57 | lttv_tracefile *lttv_trace_tracefile_get_all_cpu(lttv_trace *t, unsigned i); |
| 58 | |
| 59 | |
| 60 | /* A set of attributes is attached to each trace set, trace and tracefile |
| 61 | to store user defined data as needed. */ |
| 62 | |
| 63 | lttv_attributes *lttv_trace_set_attributes(lttv_trace_set *s); |
| 64 | |
| 65 | lttv_attributes *lttv_trace_attributes(lttv_trace *t); |
| 66 | |
| 67 | lttv_attributes *lttv_tracefile_attributes(lttv_tracefile *tf); |
| 68 | |
| 69 | |
| 70 | /* The underlying ltt_tracefile, from which events may be read, is accessible. |
| 71 | The tracefile name is also available. */ |
| 72 | |
| 73 | lttv_tracefile *lttv_tracefile_ltt_tracefile(lttv_tracefile *tf); |
| 74 | |
| 75 | char *lttv_tracefile_name(lttv_tracefile *tf); |
| 76 | |
| 77 | #endif // TRACE_H |
| 78 | |
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