3314d16ad2f446fb379301923b34a6c564071564
[lttv.git] / lttv / modules / text / precomputeState.c
1 /* This file is part of the Linux Trace Toolkit viewer
2 * Copyright (C) 2003-2004 Michel Dagenais
3 * 2005 Mathieu Desnoyers
4 *
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License Version 2 as
7 * published by the Free Software Foundation;
8 *
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
13 *
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write to the Free Software
16 * Foundation, Inc., 59 Temple Place - Suite 330, Boston,
17 * MA 02111-1307, USA.
18 */
19
20 /* The text dump facility needs to print headers before the trace set and
21 before each trace, to print each event, and to print statistics
22 after each trace. */
23
24 #ifdef HAVE_CONFIG_H
25 #include <config.h>
26 #endif
27
28 #include <lttv/lttv.h>
29 #include <lttv/option.h>
30 #include <lttv/module.h>
31 #include <lttv/hook.h>
32 #include <lttv/attribute.h>
33 #include <lttv/iattribute.h>
34 #include <lttv/stats.h>
35 #include <lttv/filter.h>
36 #include <lttv/print.h>
37 #include <ltt/ltt.h>
38 #include <ltt/event.h>
39 #include <ltt/trace.h>
40 #include <stdio.h>
41
42 static gboolean
43 a_raw;
44
45 static char
46 *a_file_name = NULL,
47 *a_quark_file_name = NULL;
48
49 static LttvHooks
50 *before_traceset,
51 *after_traceset,
52 *before_trace,
53 *after_trace,
54 *event_hook;
55
56 static guint a_event_count = 0;
57
58 /* Insert the hooks before and after each trace and tracefile, and for each
59 event. Print a global header. */
60
61 static FILE *a_file;
62
63 static GString *a_string;
64
65 static gboolean write_traceset_header(void *hook_data, void *call_data)
66 {
67 LttvTracesetContext *tc = (LttvTracesetContext *)call_data;
68
69 if(a_file_name == NULL) a_file = stdout;
70 else a_file = fopen(a_file_name, "w");
71
72 if(a_file == NULL) g_error("cannot open file %s", a_file_name);
73
74 /* Print the trace set header */
75 if(a_raw) {
76 /* TODO : Write a header that will check for ILP size and endianness */
77 //fputc(HDR_TRACESET, a_file);
78 g_assert(lttv_traceset_number(tc->ts) == 1); /* Only one trace in traceset */
79 } else {
80 fprintf(a_file,"<TRACESET NUM_TRACES=%d/>\n",
81 lttv_traceset_number(tc->ts));
82 }
83
84 return FALSE;
85 }
86
87
88 static gboolean write_traceset_footer(void *hook_data, void *call_data)
89 {
90 GQuark q;
91 const gchar *string;
92
93 if(a_raw) {
94
95 } else {
96 fprintf(a_file,"</TRACESET>\n");
97 }
98
99 if(a_file_name != NULL) fclose(a_file);
100
101 if(a_raw) {
102 if(a_quark_file_name == NULL) {
103 if(a_file_name == NULL) a_file = stdout;
104 else a_file = fopen(a_file_name, "a");
105 } else {
106 if(a_quark_file_name == NULL) a_file = stdout;
107 else a_file = fopen(a_quark_file_name, "w");
108 }
109
110 if(a_file == NULL) g_error("cannot open file %s", a_quark_file_name);
111
112 fputc(HDR_QUARKS, a_file);
113 q = 1;
114 do {
115 string = g_quark_to_string(q);
116 if(string == NULL) break;
117 fputc(HDR_QUARK, a_file);
118 // increment. fwrite(&q, sizeof(GQuark), 1, a_file);
119 fwrite(string, sizeof(char), strlen(string)+1, a_file);
120 q++;
121 } while(1);
122
123 if(a_quark_file_name != NULL || a_file_name != NULL) fclose(a_file);
124
125 }
126
127 return FALSE;
128 }
129
130
131 static gboolean write_trace_header(void *hook_data, void *call_data)
132 {
133 LttvTraceContext *tc = (LttvTraceContext *)call_data;
134
135 if(a_raw) {
136 fputc(HDR_TRACE, a_file);
137 } else {
138 fprintf(a_file,"<TRACE TRACE_NUMBER=%d/>\n",
139 tc->index);
140 }
141
142 return FALSE;
143 }
144
145 static gboolean write_trace_footer(void *hook_data, void *call_data)
146 {
147
148 if(a_raw) {
149
150 } else {
151 fprintf(a_file,"</TRACE>\n");
152 }
153
154 return FALSE;
155 }
156
157
158 static int for_each_event(void *hook_data, void *call_data)
159 {
160 guint *event_count = (guint*)hook_data;
161
162 LttvTracefileContext *tfc = (LttvTracefileContext *)call_data;
163
164 LttvTracefileState *tfs = (LttvTracefileState *)call_data;
165
166 LttEvent *e;
167
168 /* Only save at LTTV_STATE_SAVE_INTERVAL */
169 if(likely((*event_count)++ < LTTV_STATE_SAVE_INTERVAL))
170 return FALSE;
171 else
172 *event_count = 0;
173
174 LttvTraceState *ts = (LttvTraceState*)tfc->t_context;
175
176 e = ltt_tracefile_get_event(tfc->tf);
177
178 if(a_raw) {
179 lttv_state_write_raw(ts, tfs->parent.timestamp, a_file);
180 } else {
181 lttv_state_write(ts, tfs->parent.timestamp, a_file);
182 }
183
184 return FALSE;
185 }
186
187
188 static void init()
189 {
190 LttvAttributeValue value;
191
192 LttvIAttribute *attributes = LTTV_IATTRIBUTE(lttv_global_attributes());
193 gboolean retval;
194
195 g_info("Init precomputeState.c");
196
197 a_string = g_string_new("");
198
199 a_file_name = NULL;
200 lttv_option_add("output", 'o',
201 "output file where the saved states are to be written",
202 "file name",
203 LTTV_OPT_STRING, &a_file_name, NULL, NULL);
204
205 a_quark_file_name = NULL;
206 lttv_option_add("qoutput", 'q',
207 "output file where the quarks (tuples integer, string) are to be written",
208 "file name",
209 LTTV_OPT_STRING, &a_quark_file_name, NULL, NULL);
210
211 lttv_option_add("raw", 'r',
212 "Output in raw binary",
213 "Raw binary",
214 LTTV_OPT_NONE, &a_raw, NULL, NULL);
215
216 retval= lttv_iattribute_find_by_path(attributes, "hooks/event",
217 LTTV_POINTER, &value);
218 g_assert(retval);
219 g_assert((event_hook = *(value.v_pointer)) != NULL);
220 lttv_hooks_add(event_hook, for_each_event, &a_event_count, LTTV_PRIO_DEFAULT);
221
222 retval= lttv_iattribute_find_by_path(attributes, "hooks/trace/before",
223 LTTV_POINTER, &value);
224 g_assert(retval);
225 g_assert((before_trace = *(value.v_pointer)) != NULL);
226 lttv_hooks_add(before_trace, write_trace_header, NULL, LTTV_PRIO_DEFAULT);
227
228 retval= lttv_iattribute_find_by_path(attributes, "hooks/trace/after",
229 LTTV_POINTER, &value);
230 g_assert(retval);
231 g_assert((after_trace = *(value.v_pointer)) != NULL);
232 lttv_hooks_add(after_trace, write_trace_footer, NULL, LTTV_PRIO_DEFAULT);
233
234 retval= lttv_iattribute_find_by_path(attributes, "hooks/traceset/before",
235 LTTV_POINTER, &value);
236 g_assert(retval);
237 g_assert((before_traceset = *(value.v_pointer)) != NULL);
238 lttv_hooks_add(before_traceset, write_traceset_header, NULL,
239 LTTV_PRIO_DEFAULT);
240
241 retval= lttv_iattribute_find_by_path(attributes, "hooks/traceset/after",
242 LTTV_POINTER, &value);
243 g_assert(retval);
244 g_assert((after_traceset = *(value.v_pointer)) != NULL);
245 lttv_hooks_add(after_traceset, write_traceset_footer, NULL,
246 LTTV_PRIO_DEFAULT);
247 }
248
249 static void destroy()
250 {
251 g_info("Destroy precomputeState");
252
253 lttv_option_remove("output");
254
255 lttv_option_remove("qoutput");
256
257 lttv_option_remove("raw");
258
259 g_string_free(a_string, TRUE);
260
261 lttv_hooks_remove_data(event_hook, for_each_event, NULL);
262
263 lttv_hooks_remove_data(before_trace, write_trace_header, NULL);
264
265 lttv_hooks_remove_data(before_trace, write_traceset_header, NULL);
266
267 lttv_hooks_remove_data(before_trace, write_traceset_footer, NULL);
268 }
269
270
271 LTTV_MODULE("precomputeState", "Precompute states", \
272 "Precompute states in a trace, XML or binary output.", \
273 init, destroy, "stats", "batchAnalysis", "option", "print")
274
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