source: vendor/3.6.9/source3/modules/perfcount_test.c

Last change on this file was 740, checked in by Silvan Scherrer, 13 years ago

Samba Server: update vendor to 3.6.0
File size: 9.3 KB
Line 
1/*
2 * Unix SMB/CIFS implementation.
3 * Test module for perfcounters
4 *
5 * Copyright (C) Todd Stecher 2008
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 3 of the License, or
10 * (at your option) any later version.
11 *
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, see <http://www.gnu.org/licenses/>.
19 */
20
21#include "includes.h"
22#include "smbd/smbd.h"
23
24#define PARM_PC_TEST_TYPE "pc_test"
25#define PARM_DUMPON_COUNT "count"
26#define PARM_DUMPON_COUNT_DEFAULT 50
27
28struct perfcount_test_identity {
29 uid_t uid;
30 char *user;
31 char *domain;
32};
33
34struct perfcount_test_counter {
35 int op;
36 int sub_op;
37 int ioctl;
38 uint64_t bytes_in;
39 uint64_t bytes_out;
40 int count;
41
42 struct perfcount_test_counter *next;
43 struct perfcount_test_counter *prev;
44};
45
46struct perfcount_test_context {
47
48 /* wip: identity */
49 struct perfcount_test_identity *id;
50 struct perfcount_test_counter *ops;
51};
52
53#define MAX_OP 256
54struct perfcount_test_counter *g_list[MAX_OP];
55
56int count;
57
58/* determine frequency of dumping results */
59int count_mod = 1;
60
61static void perfcount_test_add_counters(struct perfcount_test_context *ctxt)
62{
63 struct perfcount_test_counter *head;
64 struct perfcount_test_counter *ptc;
65 struct perfcount_test_counter *tmp;
66 bool found;
67
68 for (ptc = ctxt->ops; ptc != NULL; ) {
69
70 found = false;
71
72 if (ptc->op > MAX_OP)
73 continue;
74
75 for (head = g_list[ptc->op]; head != NULL; head = head->next) {
76 if ((ptc->sub_op == head->sub_op) &&
77 (ptc->ioctl == head->ioctl)) {
78 head->bytes_in += ptc->bytes_in;
79 head->bytes_out += ptc->bytes_out;
80 head->count++;
81 tmp = ptc->next;
82 DLIST_REMOVE(ctxt->ops, ptc);
83 SAFE_FREE(ptc);
84 ptc = tmp;
85 found = true;
86 break;
87 }
88 }
89
90 /* not in global tracking list - add it */
91 if (!found) {
92 tmp = ptc->next;
93 DLIST_REMOVE(ctxt->ops, ptc);
94 ptc->count = 1;
95 DLIST_ADD(g_list[ptc->op], ptc);
96 ptc = tmp;
97 }
98 }
99
100}
101
102#if 0
103
104static void perfcount_test_dump_id(struct perfcount_test_identity *id, int lvl)
105{
106 if (!id)
107 return;
108
109 DEBUG(lvl,("uid - %d\n", id->uid));
110 DEBUG(lvl,("user - %s\n", id->user));
111 DEBUG(lvl,("domain - %s\n", id->domain));
112}
113
114#endif
115
116static const char *trans_subop_table[] = {
117 "unknown", "trans:create", "trans:ioctl", "trans:set sd",
118 "trans:change notify", "trans: rename", "trans:get sd",
119 "trans:get quota", "trans:set quota"
120};
121
122static const char *trans2_subop_table[] = {
123 "trans2:open", "trans2:find first", "trans2:find next",
124 "trans2:q fsinfo", "trans2:set fsinfo", "trans2:q path info",
125 "trans2:set pathinfo", "trans2:fs ctl", "trans2: io ctl",
126 "trans2:find notify first", "trans2:find notify next",
127 "trans2:mkdir", "trans2:sess setup", "trans2:get dfs referral",
128 "trans2:report dfs inconsistent"
129};
130
131static const char *smb_subop_name(int op, int subop)
132{
133 /* trans */
134 if (op == 0x25) {
135 if (subop > sizeof(trans_subop_table) /
136 sizeof(trans_subop_table[0])) {
137 return "unknown";
138 }
139 return trans_subop_table[subop];
140 } else if (op == 0x32) {
141 if (subop > sizeof(trans2_subop_table) /
142 sizeof(trans2_subop_table[0])) {
143 return "unknown";
144 }
145 return trans2_subop_table[subop];
146 }
147
148 return "unknown";
149}
150
151static void perfcount_test_dump_counter(struct perfcount_test_counter *ptc,
152 int lvl)
153{
154 DEBUG(lvl, ("OP: %s\n", smb_fn_name(ptc->op)));
155 if (ptc->sub_op > 0) {
156 DEBUG(lvl, ("SUBOP: %s\n",
157 smb_subop_name(ptc->op, ptc->sub_op)));
158 }
159
160 if (ptc->ioctl > 0) {
161 DEBUG(lvl, ("IOCTL: %d\n", ptc->ioctl));
162 }
163
164 DEBUG(lvl, ("Count: %d\n\n", ptc->count));
165}
166
167static void perfcount_test_dump_counters(void)
168{
169 int i;
170 struct perfcount_test_counter *head;
171
172 count_mod = lp_parm_int(0, PARM_PC_TEST_TYPE, PARM_DUMPON_COUNT,
173 PARM_DUMPON_COUNT_DEFAULT);
174
175 if ((count++ % count_mod) != 0)
176 return;
177
178 DEBUG(0,("##### Dumping Performance Counters #####\n"));
179
180 for (i=0; i < MAX_OP; i++) {
181 struct perfcount_test_counter *next;
182 for (head = g_list[i]; head != NULL; head = next) {
183 next = head->next;
184 perfcount_test_dump_counter(head, 0);
185 SAFE_FREE(head);
186 }
187 g_list[i] = NULL;
188 }
189}
190
191/* operations */
192static void perfcount_test_start(struct smb_perfcount_data *pcd)
193{
194 struct perfcount_test_context *ctxt;
195 struct perfcount_test_counter *ctr;
196 /*
197 * there shouldn't already be a context here - if so,
198 * there's an unbalanced call to start / end.
199 */
200 if (pcd->context) {
201 DEBUG(0,("perfcount_test_start - starting "
202 "initialized context - %p\n", pcd));
203 return;
204 }
205
206 ctxt = SMB_MALLOC_P(struct perfcount_test_context);
207 if (!ctxt)
208 return;
209
210 ZERO_STRUCTP(ctxt);
211
212 /* create 'default' context */
213 ctr = SMB_MALLOC_P(struct perfcount_test_counter);
214 if (!ctr) {
215 SAFE_FREE(ctxt);
216 return;
217 }
218
219 ZERO_STRUCTP(ctr);
220 ctr->op = ctr->sub_op = ctr->ioctl = -1;
221 DLIST_ADD(ctxt->ops, ctr);
222
223 pcd->context = (void*)ctxt;
224}
225
226static void perfcount_test_add(struct smb_perfcount_data *pcd)
227{
228 struct perfcount_test_context *ctxt =
229 (struct perfcount_test_context *)pcd->context;
230 struct perfcount_test_counter *ctr;
231
232 if (pcd->context == NULL)
233 return;
234
235 ctr = SMB_MALLOC_P(struct perfcount_test_counter);
236 if (!ctr) {
237 return;
238 }
239
240 DLIST_ADD(ctxt->ops, ctr);
241
242}
243
244static void perfcount_test_set_op(struct smb_perfcount_data *pcd, int op)
245{
246 struct perfcount_test_context *ctxt =
247 (struct perfcount_test_context *)pcd->context;
248
249 if (pcd->context == NULL)
250 return;
251
252 ctxt->ops->op = op;
253}
254
255static void perfcount_test_set_subop(struct smb_perfcount_data *pcd, int sub_op)
256{
257 struct perfcount_test_context *ctxt =
258 (struct perfcount_test_context *)pcd->context;
259
260 if (pcd->context == NULL)
261 return;
262
263 ctxt->ops->sub_op = sub_op;
264}
265
266static void perfcount_test_set_ioctl(struct smb_perfcount_data *pcd, int io_ctl)
267{
268 struct perfcount_test_context *ctxt =
269 (struct perfcount_test_context *)pcd->context;
270 if (pcd->context == NULL)
271 return;
272
273 ctxt->ops->ioctl = io_ctl;
274}
275
276static void perfcount_test_set_msglen_in(struct smb_perfcount_data *pcd,
277 uint64_t bytes_in)
278{
279 struct perfcount_test_context *ctxt =
280 (struct perfcount_test_context *)pcd->context;
281 if (pcd->context == NULL)
282 return;
283
284 ctxt->ops->bytes_in = bytes_in;
285}
286
287static void perfcount_test_set_msglen_out(struct smb_perfcount_data *pcd,
288 uint64_t bytes_out)
289{
290 struct perfcount_test_context *ctxt =
291 (struct perfcount_test_context *)pcd->context;
292
293 if (pcd->context == NULL)
294 return;
295
296 ctxt->ops->bytes_out = bytes_out;
297}
298
299static void perfcount_test_copy_context(struct smb_perfcount_data *pcd,
300 struct smb_perfcount_data *new_pcd)
301{
302 struct perfcount_test_context *ctxt =
303 (struct perfcount_test_context *)pcd->context;
304 struct perfcount_test_context *new_ctxt;
305
306 struct perfcount_test_counter *ctr;
307 struct perfcount_test_counter *new_ctr;
308
309 if (pcd->context == NULL)
310 return;
311
312 new_ctxt = SMB_MALLOC_P(struct perfcount_test_context);
313 if (!new_ctxt) {
314 return;
315 }
316
317 memcpy(new_ctxt, ctxt, sizeof(struct perfcount_test_context));
318
319 for (ctr = ctxt->ops; ctr != NULL; ctr = ctr->next) {
320 new_ctr = SMB_MALLOC_P(struct perfcount_test_counter);
321 if (!new_ctr) {
322 goto error;
323 }
324
325 memcpy(new_ctr, ctr, sizeof(struct perfcount_test_counter));
326 new_ctr->next = NULL;
327 new_ctr->prev = NULL;
328 DLIST_ADD(new_ctxt->ops, new_ctr);
329 }
330
331 new_pcd->context = new_ctxt;
332 return;
333
334error:
335
336 for (ctr = new_ctxt->ops; ctr != NULL; ) {
337 new_ctr = ctr->next;
338 SAFE_FREE(ctr);
339 ctr = new_ctr;
340 }
341
342 SAFE_FREE(new_ctxt);
343}
344
345/*
346 * For perf reasons, its best to use some global state
347 * when an operation is deferred, we need to alloc a copy.
348 */
349static void perfcount_test_defer_op(struct smb_perfcount_data *pcd,
350 struct smb_perfcount_data *def_pcd)
351{
352 /* we don't do anything special to deferred ops */
353 return;
354}
355
356static void perfcount_test_end(struct smb_perfcount_data *pcd)
357{
358 struct perfcount_test_context *ctxt =
359 (struct perfcount_test_context *)pcd->context;
360 if (pcd->context == NULL)
361 return;
362
363 /* @bug - we don't store outbytes right for chained cmds */
364 perfcount_test_add_counters(ctxt);
365 perfcount_test_dump_counters();
366 pcd->context = NULL;
367 SAFE_FREE(ctxt);
368}
369
370
371static struct smb_perfcount_handlers perfcount_test_handlers = {
372 perfcount_test_start,
373 perfcount_test_add,
374 perfcount_test_set_op,
375 perfcount_test_set_subop,
376 perfcount_test_set_ioctl,
377 perfcount_test_set_msglen_in,
378 perfcount_test_set_msglen_out,
379 perfcount_test_copy_context,
380 perfcount_test_defer_op,
381 perfcount_test_end
382};
383
384NTSTATUS perfcount_test_init(void)
385{
386 return smb_register_perfcounter(SMB_PERFCOUNTER_INTERFACE_VERSION,
387 "pc_test", &perfcount_test_handlers);
388}
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