1b82f325 |
1 | /* A trace is a sequence of events gathered in the same tracing session. The |
2 | events may be stored in several tracefiles in the same directory. |
3 | A trace set is defined when several traces are to be analyzed together, |
4 | possibly to study the interactions between events in the different traces. |
5 | */ |
6 | |
7 | struct _lttv_trace_set { |
8 | GPtrArray *traces; |
9 | GPtrArray *attributes; |
10 | lttv_attributes *a; |
11 | }; |
12 | |
13 | |
14 | lttv_trace_set *lttv_trace_set_new() |
15 | { |
16 | lttv_trace_set s; |
17 | |
18 | s = g_new(lttv_trace_set, 1); |
19 | s->traces = g_ptr_array_new(); |
20 | s->attributes = g_ptr_array_new(); |
21 | s->a = lttv_attributes_new(); |
22 | } |
23 | |
24 | lttv_trace_set *lttv_trace_set_destroy(lttv_trace_set *s) |
25 | { |
26 | int i, nb; |
27 | |
28 | for(i = 0 ; i < s->attributes->len ; i++) { |
29 | lttv_attributes_destroy((lttv_attributes *)s->attributes->pdata[i]); |
30 | } |
31 | g_ptr_array_free(s->attributes); |
32 | g_ptr_array_free(s->traces); |
33 | lttv_attributes_destroy(s->a); |
34 | return g_free(s); |
35 | } |
36 | |
37 | void lttv_trace_set_add(lttv_trace_set *s, lttv_trace *t) |
38 | { |
39 | g_ptr_array_add(s,t); |
40 | g_ptr_array_add(s,lttv_attributes_new()); |
41 | } |
42 | |
43 | unsigned lttv_trace_set_number(lttv_trace_set *s) |
44 | { |
45 | return s->traces.len; |
46 | } |
47 | |
48 | |
49 | lttv_trace *lttv_trace_set_get(lttv_trace_set *s, unsigned i) |
50 | { |
51 | g_assert(s->traces->len <= i); |
52 | return s->traces.pdata[i]; |
53 | } |
54 | |
55 | |
56 | lttv_trace *lttv_trace_set_remove(lttv_trace_set *s, unsigned i) |
57 | { |
58 | return g_ptr_array_remove_index(s->traces,i); |
59 | lttv_attributes_destroy(g_ptr_array_remove_index(s->attributes,i)); |
60 | } |
61 | |
62 | |
63 | /* A set of attributes is attached to each trace set, trace and tracefile |
64 | to store user defined data as needed. */ |
65 | |
66 | lttv_attributes *lttv_trace_set_attributes(lttv_trace_set *s) |
67 | { |
68 | return s->a; |
69 | } |
70 | |
71 | lttv_attributes *lttv_trace_set_trace_attributes(lttv_trace_set *s, unsigned i) |
72 | { |
73 | return t->a; |
74 | } |
75 | |
76 | lttv_attributes *lttv_tracefile_attributes(lttv_tracefile *tf) { |
77 | return (lttv_attributes *)s->attributes->pdata[i]; |
78 | } |
79 | |
80 | |
81 | static void lttv_analyse_trace(lttv_trace *t); |
82 | |
83 | static void lttv_analyse_tracefile(lttv_tracefile *t); |
84 | |
85 | lttv_trace_set_process(lttv_trace_set *s, ltt_time start, ltt_time end) |
86 | { |
87 | int i, nb; |
88 | lttv_hooks *before, *after; |
89 | lttv_attributes *a; |
90 | ltt_trace *t; |
91 | lttv_filter *filter_data; |
92 | |
93 | a = lttv_trace_set_attributes(s); |
94 | before = (lttv_hooks*)lttv_attributes_get_pointer_pathname(a,"hooks/before"); |
95 | after = (lttv_hooks*)lttv_attributes_get_pointer_pathname(a,"hooks/after"); |
96 | nb = lttv_trace_set_number(s); |
97 | |
98 | lttv_hooks_call(before, s); |
99 | |
100 | for(i = 0; i < nb; i++) { |
101 | t = lttv_trace_set_get(s,i); |
102 | a = lttv_trace_set_trace_attributes(s,i); |
103 | lttv_analyse_trace(t, a, start, end); |
104 | } |
105 | |
106 | lttv_hooks_call(after, s); |
107 | } |
108 | |
109 | |
110 | static void lttv_analyse_trace(ltt_trace *t, lttv_attributes *a, |
111 | ltt_time start, ltt_time end) |
112 | { |
113 | int i, nb_all_cpu, nb_per_cpu; |
114 | lttv_hooks *before, *after; |
115 | |
116 | before = (lttv_hooks*)lttv_attributes_get_pointer_pathname(a,"hooks/before"); |
117 | after = (lttv_hooks*)lttv_attributes_get_pointer_pathname(a,"hooks/after"); |
118 | |
119 | nb_all_cpu = ltt_trace_tracefile_number_all_cpu(t); |
120 | nb_per_cpu = ltt_trace_tracefile_number_per_cpu(t); |
121 | |
122 | lttv_hooks_call(before, t); |
123 | |
124 | for(i = 0; i < nb_all_cpu; i++) { |
125 | lttv_analyse_tracefile(ltt_trace_get_all_cpu(t,i), a, start, end); |
126 | } |
127 | |
128 | for(i = 0; i < nb_per_cpu; i++) { |
129 | lttv_analyse_tracefile(ltt_trace_get_per_cpu(t,i), a, start, end); |
130 | } |
131 | |
132 | lttv_hooks_call(after, t); |
133 | } |
134 | |
135 | |
136 | static void lttv_analyse_tracefile(ltt_tracefile *t, lttv_attributes *a, |
137 | ltt_time start, ltt_time end) |
138 | { |
139 | ltt_event *event; |
140 | unsigned id; |
141 | lttv_hooks *before, *after, *event_hooks, *tracefile_check, *event_check; |
142 | lttv_hooks_by_id *event_hooks_by_id; |
143 | lttv_attributes *a; |
144 | |
145 | before = (lttv_hooks *)lttv_attributes_get_pointer_pathname(a, |
146 | "hooks/tracefile/before"); |
147 | after = (lttv_hooks *)lttv_attributes_get_pointer_pathname(a, |
148 | "hooks/tracefile/after"); |
149 | event_hooks = (lttv_hooks*)lttv_attributes_get_pointer_pathname(a, |
150 | "hooks/event/selected"); |
151 | event_hooks_by_id = (lttv_hooks_by_id*) |
152 | lttv_attributes_get_pointer_pathname(a, "hooks/event/byid"); |
153 | tracefile_check = (lttv_hooks *)lttv_attributes_get_pointer_pathname(a, |
154 | "hooks/tracefile/check"); |
155 | event_check = (lttv_hooks *)lttv_attributes_get_pointer_pathname(a, |
156 | "hooks/event/check"); |
157 | |
158 | lttv_hooks_call(before, t); |
159 | |
160 | if(lttv_hooks_call_check(tracefile_check,t) && |
161 | ( lttv_hooks_number(event_hooks) != 0 || |
162 | lttv_hooks_by_id_number(event_hooks_by_id) != 0) { |
163 | |
164 | ltt_tracefile_seek_time(t, start); |
165 | while((event = ltt_tracefile_read(t)) != NULL && |
166 | ltt_event_time(event) < end) { |
167 | if(lttv_hooks_call_check(event_check)) { |
168 | lttv_hooks_call(event_hooks,event); |
169 | lttv_hooks_by_id_call(event_hooks_by_id,event, |
170 | ltt_event_type_id(event)); |
171 | } |
172 | } |
173 | } |
174 | lttv_hooks_call(after, t); |
175 | } |
176 | |
177 | |
178 | |