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1fc22eb4 JD |
1 | /* |
2 | * Copyright (C) 2011 Julien Desfossez | |
3 | * | |
4 | * This program is free software; you can redistribute it and/or modify | |
5 | * it under the terms of the GNU General Public License Version 2 as | |
6 | * published by the Free Software Foundation; | |
7 | * | |
8 | * This program is distributed in the hope that it will be useful, | |
9 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
11 | * GNU General Public License for more details. | |
12 | * | |
13 | * You should have received a copy of the GNU General Public License | |
14 | * along with this program; if not, write to the Free Software | |
15 | * Foundation, Inc., 59 Temple Place - Suite 330, Boston, | |
16 | * MA 02111-1307, USA. | |
17 | */ | |
18 | ||
19 | #include <stdlib.h> | |
20 | #include <string.h> | |
21 | #include "common.h" | |
22 | ||
d67167cd JD |
23 | uint64_t get_cpu_id(struct bt_ctf_event *event) |
24 | { | |
25 | struct definition *scope; | |
26 | uint64_t cpu_id; | |
27 | ||
28 | scope = bt_ctf_get_top_level_scope(event, BT_STREAM_PACKET_CONTEXT); | |
29 | cpu_id = bt_ctf_get_uint64(bt_ctf_get_field(event, scope, "cpu_id")); | |
30 | if (bt_ctf_field_get_error()) { | |
31 | fprintf(stderr, "[error] get cpu_id\n"); | |
32 | return -1ULL; | |
33 | } | |
34 | ||
35 | return cpu_id; | |
36 | } | |
37 | ||
1fc22eb4 JD |
38 | struct processtop *find_process_tid(struct lttngtop *ctx, int tid, char *comm) |
39 | { | |
40 | gint i; | |
41 | struct processtop *tmp; | |
42 | ||
43 | for (i = 0; i < ctx->process_table->len; i++) { | |
44 | tmp = g_ptr_array_index(ctx->process_table, i); | |
45 | if (tmp && tmp->tid == tid) | |
46 | return tmp; | |
47 | } | |
48 | return NULL; | |
49 | } | |
50 | ||
51 | struct processtop* add_proc(struct lttngtop *ctx, int tid, char *comm, | |
52 | unsigned long timestamp) | |
53 | { | |
54 | struct processtop *newproc; | |
55 | ||
56 | /* if the PID already exists, we just rename the process */ | |
57 | /* FIXME : need to integrate with clone/fork/exit to be accurate */ | |
58 | newproc = find_process_tid(ctx, tid, comm); | |
59 | if (!newproc) { | |
559c9f86 | 60 | newproc = g_new0(struct processtop, 1); |
1fc22eb4 JD |
61 | newproc->tid = tid; |
62 | newproc->birth = timestamp; | |
63 | newproc->process_files_table = g_ptr_array_new(); | |
b093de8a MB |
64 | newproc->files_history = g_new0(struct file_history, 1); |
65 | newproc->files_history->next = NULL; | |
66 | newproc->totalfileread = 0; | |
67 | newproc->totalfilewrite = 0; | |
68 | newproc->fileread = 0; | |
69 | newproc->filewrite = 0; | |
70 | newproc->syscall_info = NULL; | |
1fc22eb4 | 71 | newproc->threads = g_ptr_array_new(); |
85db4618 | 72 | newproc->perf = g_hash_table_new(g_str_hash, g_str_equal); |
1fc22eb4 JD |
73 | g_ptr_array_add(ctx->process_table, newproc); |
74 | } | |
75 | newproc->comm = strdup(comm); | |
76 | ||
77 | return newproc; | |
78 | } | |
79 | ||
80 | struct processtop* update_proc(struct processtop* proc, int pid, int tid, | |
81 | int ppid, char *comm) | |
82 | { | |
83 | if (proc) { | |
84 | proc->pid = pid; | |
85 | proc->tid = tid; | |
86 | proc->ppid = ppid; | |
87 | if (strcmp(proc->comm, comm) != 0) { | |
88 | free(proc->comm); | |
89 | proc->comm = strdup(comm); | |
90 | } | |
91 | } | |
92 | return proc; | |
93 | } | |
94 | ||
95 | /* | |
96 | * This function just sets the time of death of a process. | |
97 | * When we rotate the cputime we remove it from the process list. | |
98 | */ | |
99 | void death_proc(struct lttngtop *ctx, int tid, char *comm, | |
100 | unsigned long timestamp) | |
101 | { | |
102 | struct processtop *tmp; | |
103 | tmp = find_process_tid(ctx, tid, comm); | |
104 | if (tmp && strcmp(tmp->comm, comm) == 0) | |
105 | tmp->death = timestamp; | |
106 | } | |
107 | ||
108 | struct processtop* get_proc(struct lttngtop *ctx, int tid, char *comm, | |
109 | unsigned long timestamp) | |
110 | { | |
111 | struct processtop *tmp; | |
112 | tmp = find_process_tid(ctx, tid, comm); | |
113 | if (tmp && strcmp(tmp->comm, comm) == 0) | |
114 | return tmp; | |
115 | return add_proc(ctx, tid, comm, timestamp); | |
116 | } | |
117 | ||
118 | void add_thread(struct processtop *parent, struct processtop *thread) | |
119 | { | |
120 | gint i; | |
121 | struct processtop *tmp; | |
122 | ||
123 | for (i = 0; i < parent->threads->len; i++) { | |
124 | tmp = g_ptr_array_index(parent->threads, i); | |
125 | if (tmp == thread) | |
126 | return; | |
127 | } | |
128 | g_ptr_array_add(parent->threads, thread); | |
129 | } | |
130 | ||
131 | struct cputime* add_cpu(int cpu) | |
132 | { | |
133 | struct cputime *newcpu; | |
134 | ||
559c9f86 | 135 | newcpu = g_new0(struct cputime, 1); |
1fc22eb4 JD |
136 | newcpu->id = cpu; |
137 | newcpu->current_task = NULL; | |
85db4618 | 138 | newcpu->perf = g_hash_table_new(g_str_hash, g_str_equal); |
1fc22eb4 JD |
139 | |
140 | g_ptr_array_add(lttngtop.cpu_table, newcpu); | |
141 | ||
142 | return newcpu; | |
143 | } | |
144 | struct cputime* get_cpu(int cpu) | |
145 | { | |
146 | gint i; | |
147 | struct cputime *tmp; | |
148 | ||
149 | for (i = 0; i < lttngtop.cpu_table->len; i++) { | |
150 | tmp = g_ptr_array_index(lttngtop.cpu_table, i); | |
151 | if (tmp->id == cpu) | |
152 | return tmp; | |
153 | } | |
154 | ||
155 | return add_cpu(cpu); | |
156 | } | |
157 | ||
158 | /* | |
159 | * At the end of a sampling period, we need to display the cpu time for each | |
160 | * process and to reset it to zero for the next period | |
161 | */ | |
162 | void rotate_cputime(unsigned long end) | |
163 | { | |
164 | gint i; | |
165 | struct cputime *tmp; | |
166 | unsigned long elapsed; | |
167 | ||
168 | for (i = 0; i < lttngtop.cpu_table->len; i++) { | |
169 | tmp = g_ptr_array_index(lttngtop.cpu_table, i); | |
170 | elapsed = end - tmp->task_start; | |
171 | if (tmp->current_task) { | |
172 | tmp->current_task->totalcpunsec += elapsed; | |
173 | tmp->current_task->threadstotalcpunsec += elapsed; | |
174 | if (tmp->current_task->pid != tmp->current_task->tid && | |
175 | tmp->current_task->threadparent) { | |
176 | tmp->current_task->threadparent->threadstotalcpunsec += elapsed; | |
177 | } | |
178 | } | |
179 | tmp->task_start = end; | |
180 | } | |
181 | } | |
182 | ||
183 | void reset_perf_counter(gpointer key, gpointer value, gpointer user_data) | |
184 | { | |
185 | ((struct perfcounter*) value)->count = 0; | |
186 | } | |
187 | ||
188 | void copy_perf_counter(gpointer key, gpointer value, gpointer new_table) | |
189 | { | |
190 | struct perfcounter *newperf; | |
191 | ||
559c9f86 | 192 | newperf = g_new0(struct perfcounter, 1); |
1fc22eb4 JD |
193 | newperf->count = ((struct perfcounter *) value)->count; |
194 | newperf->visible = ((struct perfcounter *) value)->visible; | |
195 | newperf->sort = ((struct perfcounter *) value)->sort; | |
85db4618 | 196 | g_hash_table_insert((GHashTable *) new_table, strdup(key), newperf); |
1fc22eb4 JD |
197 | } |
198 | ||
199 | void rotate_perfcounter() { | |
200 | int i; | |
201 | struct processtop *tmp; | |
202 | for (i = 0; i < lttngtop.process_table->len; i++) { | |
203 | tmp = g_ptr_array_index(lttngtop.process_table, i); | |
204 | g_hash_table_foreach(tmp->perf, reset_perf_counter, NULL); | |
205 | } | |
206 | } | |
207 | ||
208 | void cleanup_processtop() | |
209 | { | |
b093de8a | 210 | gint i, j; |
1fc22eb4 | 211 | struct processtop *tmp; |
b093de8a | 212 | struct files *tmpf; /* a temporary file */ |
1fc22eb4 JD |
213 | |
214 | for (i = 0; i < lttngtop.process_table->len; i++) { | |
215 | tmp = g_ptr_array_index(lttngtop.process_table, i); | |
216 | tmp->totalcpunsec = 0; | |
217 | tmp->threadstotalcpunsec = 0; | |
b093de8a MB |
218 | tmp->fileread = 0; |
219 | tmp->filewrite = 0; | |
220 | ||
221 | for (j = 0; j < tmp->process_files_table->len; j++) { | |
222 | tmpf = g_ptr_array_index(tmp->process_files_table, j); | |
223 | if (tmpf != NULL) { | |
224 | tmpf->read = 0; | |
225 | tmpf->write = 0; | |
226 | } | |
227 | } | |
1fc22eb4 JD |
228 | } |
229 | } | |
230 | ||
231 | struct lttngtop* get_copy_lttngtop(unsigned long start, unsigned long end) | |
232 | { | |
233 | gint i, j; | |
234 | unsigned long time; | |
235 | struct lttngtop *dst; | |
236 | struct processtop *tmp, *tmp2, *new; | |
237 | struct cputime *tmpcpu, *newcpu; | |
238 | struct files *tmpfile, *newfile; | |
239 | ||
559c9f86 | 240 | dst = g_new0(struct lttngtop, 1); |
1fc22eb4 JD |
241 | dst->start = start; |
242 | dst->end = end; | |
243 | dst->process_table = g_ptr_array_new(); | |
244 | dst->files_table = g_ptr_array_new(); | |
245 | dst->cpu_table = g_ptr_array_new(); | |
85db4618 | 246 | dst->perf_list = g_hash_table_new(g_str_hash, g_str_equal); |
1fc22eb4 JD |
247 | |
248 | rotate_cputime(end); | |
249 | ||
250 | g_hash_table_foreach(lttngtop.perf_list, copy_perf_counter, dst->perf_list); | |
251 | for (i = 0; i < lttngtop.process_table->len; i++) { | |
252 | tmp = g_ptr_array_index(lttngtop.process_table, i); | |
559c9f86 | 253 | new = g_new0(struct processtop, 1); |
1fc22eb4 JD |
254 | |
255 | memcpy(new, tmp, sizeof(struct processtop)); | |
256 | new->threads = g_ptr_array_new(); | |
257 | new->comm = strdup(tmp->comm); | |
258 | new->process_files_table = g_ptr_array_new(); | |
85db4618 | 259 | new->perf = g_hash_table_new(g_str_hash, g_str_equal); |
1fc22eb4 JD |
260 | g_hash_table_foreach(tmp->perf, copy_perf_counter, new->perf); |
261 | ||
1fc22eb4 | 262 | /* compute the stream speed */ |
85db4618 JD |
263 | if (end - start != 0) { |
264 | time = (end - start) / NSEC_PER_SEC; | |
b093de8a MB |
265 | new->fileread = new->fileread/(time); |
266 | new->filewrite = new->filewrite/(time); | |
1fc22eb4 JD |
267 | } |
268 | ||
269 | for (j = 0; j < tmp->process_files_table->len; j++) { | |
270 | tmpfile = g_ptr_array_index(tmp->process_files_table, j); | |
1fc22eb4 | 271 | |
b093de8a MB |
272 | newfile = malloc(sizeof(struct files)); |
273 | ||
274 | if (tmpfile != NULL) { | |
275 | memcpy(newfile, tmpfile, sizeof(struct files)); | |
276 | newfile->name = strdup(tmpfile->name); | |
277 | newfile->ref = new; | |
278 | g_ptr_array_add(new->process_files_table, | |
279 | newfile); | |
280 | g_ptr_array_add(dst->files_table, newfile); | |
281 | } else { | |
282 | g_ptr_array_add(new->process_files_table, NULL); | |
283 | g_ptr_array_add(dst->files_table, NULL); | |
284 | } | |
1fc22eb4 JD |
285 | /* |
286 | * if the process died during the last period, we remove all | |
287 | * files associated with if after the copy | |
288 | */ | |
289 | if (tmp->death > 0 && tmp->death < end) { | |
290 | g_ptr_array_remove(tmp->process_files_table, tmpfile); | |
559c9f86 | 291 | g_free(tmpfile); |
1fc22eb4 JD |
292 | } |
293 | } | |
294 | g_ptr_array_add(dst->process_table, new); | |
295 | ||
296 | /* | |
297 | * if the process died during the last period, we remove it from | |
298 | * the current process list after the copy | |
299 | */ | |
300 | if (tmp->death > 0 && tmp->death < end) { | |
301 | g_ptr_array_remove(lttngtop.process_table, tmp); | |
85db4618 | 302 | /* FIXME : TRUE does not mean clears the object in it */ |
1fc22eb4 JD |
303 | g_ptr_array_free(tmp->threads, TRUE); |
304 | free(tmp->comm); | |
305 | g_ptr_array_free(tmp->process_files_table, TRUE); | |
85db4618 | 306 | /* FIXME : clear elements */ |
1fc22eb4 | 307 | g_hash_table_destroy(tmp->perf); |
559c9f86 | 308 | g_free(tmp); |
1fc22eb4 JD |
309 | } |
310 | } | |
311 | rotate_perfcounter(); | |
312 | ||
313 | for (i = 0; i < lttngtop.cpu_table->len; i++) { | |
314 | tmpcpu = g_ptr_array_index(lttngtop.cpu_table, i); | |
559c9f86 | 315 | newcpu = g_new0(struct cputime, 1); |
1fc22eb4 | 316 | memcpy(newcpu, tmpcpu, sizeof(struct cputime)); |
85db4618 | 317 | newcpu->perf = g_hash_table_new(g_str_hash, g_str_equal); |
1fc22eb4 JD |
318 | g_hash_table_foreach(tmpcpu->perf, copy_perf_counter, newcpu->perf); |
319 | /* | |
320 | * note : we don't care about the current process pointer in the copy | |
321 | * so the reference is invalid after the memcpy | |
322 | */ | |
323 | g_ptr_array_add(dst->cpu_table, newcpu); | |
324 | } | |
85db4618 | 325 | /* FIXME : better algo */ |
1fc22eb4 JD |
326 | /* create the threads index if required */ |
327 | for (i = 0; i < dst->process_table->len; i++) { | |
328 | tmp = g_ptr_array_index(dst->process_table, i); | |
329 | if (tmp->pid == tmp->tid) { | |
330 | for (j = 0; j < dst->process_table->len; j++) { | |
331 | tmp2 = g_ptr_array_index(dst->process_table, j); | |
332 | if (tmp2->pid == tmp->pid) { | |
333 | tmp2->threadparent = tmp; | |
334 | g_ptr_array_add(tmp->threads, tmp2); | |
335 | } | |
336 | } | |
337 | } | |
338 | } | |
339 | ||
340 | // update_global_stats(dst); | |
341 | cleanup_processtop(); | |
342 | ||
343 | return dst; | |
344 | } | |
345 |