-
Notifications
You must be signed in to change notification settings - Fork 3.2k
/
Copy pathswoole_trace.cc
468 lines (388 loc) · 12.6 KB
/
swoole_trace.cc
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
/*
+----------------------------------------------------------------------+
| Swoole |
+----------------------------------------------------------------------+
| This source file is subject to version 2.0 of the Apache license, |
| that is bundled with this package in the file LICENSE, and is |
| available through the world-wide-web at the following url: |
| http://www.apache.org/licenses/LICENSE-2.0.html |
| If you did not receive a copy of the Apache2.0 license and are unable|
| to obtain it through the world-wide-web, please send a note to |
| [email protected] so we can mail you a copy immediately. |
+----------------------------------------------------------------------+
| Author: Tianfeng Han <[email protected]> |
+----------------------------------------------------------------------+
*/
#include "php_swoole.h"
#ifdef HAVE_PTRACE
#include <stddef.h>
#include <sys/ptrace.h>
#if SIZEOF_LONG == 4
#define PTR_FMT "08"
#elif SIZEOF_LONG == 8
#define PTR_FMT "016"
#endif
#if defined(PT_ATTACH) && !defined(PTRACE_ATTACH)
#if __APPLE__
#define PTRACE_ATTACH PT_ATTACHEXC
#else
#define PTRACE_ATTACH PT_ATTACH
#endif
#endif
#if defined(PT_DETACH) && !defined(PTRACE_DETACH)
#define PTRACE_DETACH PT_DETACH
#endif
#if defined(PT_READ_D) && !defined(PTRACE_PEEKDATA)
#define PTRACE_PEEKDATA PT_READ_D
#endif
#define valid_ptr(p) ((p) && 0 == ((p) & (sizeof(long) - 1)))
static void trace_request(swWorker *worker);
static int trace_dump(swWorker *worker, FILE *slowlog);
static int trace_get_long(pid_t traced_pid, long addr, long *data);
static int trace_get_strz(pid_t traced_pid, char *buf, size_t sz, long addr);
static void trace_request(swWorker *worker)
{
FILE *slowlog = SwooleG.serv->request_slowlog_file;
pid_t traced_pid = worker->pid;
int ret = trace_dump(worker, slowlog);
if (ret < 0)
{
swSysWarn("failed to trace worker %d, error lint =%d", worker->pid, -ret);
}
if (0 > ptrace(PTRACE_DETACH, traced_pid, (caddr_t) 1, 0))
{
swSysWarn("failed to ptrace(DETACH) worker %d", worker->pid);
}
fflush(slowlog);
}
void php_swoole_trace_check(void *arg)
{
swServer *serv = (swServer *) arg;
uint8_t timeout = serv->request_slowlog_timeout;
int count = serv->worker_num + serv->task_worker_num;
int i = serv->trace_event_worker ? 0 : serv->worker_num;
swWorker *worker;
for (; i < count; i++)
{
worker = swServer_get_worker(serv, i);
swTraceLog(SW_TRACE_SERVER, "trace request, worker#%d, pid=%d. request_time=%ld", i, worker->pid, worker->request_time);
if (!(worker->request_time > 0 && worker->traced == 0 && serv->gs->now - worker->request_time >= timeout))
{
continue;
}
if (ptrace(PTRACE_ATTACH, worker->pid, 0, 0) < 0)
{
swSysWarn("failed to ptrace(ATTACH, %d) worker#%d,", worker->pid, worker->id);
continue;
}
worker->tracer = trace_request;
worker->traced = 1;
}
}
static int trace_get_long(pid_t traced_pid, long addr, long *data)
{
errno = 0;
*data = ptrace(PTRACE_PEEKDATA, traced_pid, (caddr_t) addr, 0);
if (*data < 0)
{
return -1;
}
return 0;
}
static int trace_get_strz(pid_t traced_pid, char *buf, size_t sz, long addr)
{
int i;
long l = addr;
char *lc = (char *) &l;
i = l % SIZEOF_LONG;
l -= i;
for (addr = l;; addr += SIZEOF_LONG)
{
if (0 > trace_get_long(traced_pid, addr, &l))
{
return -1;
}
for (; i < SIZEOF_LONG; i++)
{
--sz;
if (sz && lc[i])
{
*buf++ = lc[i];
continue;
}
*buf = '\0';
return 0;
}
i = 0;
}
return 0;
}
size_t trace_print_time(struct timeval *tv, char *timebuf, size_t timebuf_len)
{
struct tm t;
size_t len;
len = strftime(timebuf, timebuf_len, "[%d-%b-%Y %H:%M:%S", localtime_r((const time_t *) &tv->tv_sec, &t));
len += sw_snprintf(timebuf + len, timebuf_len - len, "] ");
return len;
}
static int trace_dump(swWorker *worker, FILE *slowlog)
{
pid_t traced_pid = worker->pid;
int callers_limit = 100;
struct timeval tv;
static const int buf_size = 1024;
char buf[buf_size];
long execute_data;
long l;
gettimeofday(&tv, 0);
trace_print_time(&tv, buf, buf_size);
fprintf(slowlog, "\n%s [worker#%d] pid %d\n", buf, worker->id, (int) traced_pid);
if (0 > trace_get_long(traced_pid, (long) &EG(current_execute_data), &l))
{
return -__LINE__;
}
execute_data = l;
#if PHP_VERSION_ID > 70100
while (execute_data)
{
long function;
long function_name;
long file_name;
long prev;
uint32_t lineno = 0;
if (0 > trace_get_long(traced_pid, execute_data + offsetof(zend_execute_data, func), &l))
{
return -__LINE__;
}
function = l;
if (valid_ptr(function))
{
if (0 > trace_get_long(traced_pid, function + offsetof(zend_function, common.function_name), &l))
{
return -1;
}
function_name = l;
if (function_name == 0)
{
uint32_t *call_info = (uint32_t *) &l;
if (0 > trace_get_long(traced_pid, execute_data + offsetof(zend_execute_data, This.u1.type_info), &l))
{
return -__LINE__;
}
#if PHP_VERSION_ID < 70400
if (ZEND_CALL_KIND_EX((*call_info) >> ZEND_CALL_INFO_SHIFT) == ZEND_CALL_TOP_CODE)
#else
if (ZEND_CALL_KIND_EX(*call_info) == ZEND_CALL_TOP_CODE)
#endif
{
return 0;
}
#if PHP_VERSION_ID < 70400
else if (ZEND_CALL_KIND_EX(*(call_info) >> ZEND_CALL_INFO_SHIFT) == ZEND_CALL_NESTED_CODE)
#else
else if (ZEND_CALL_KIND_EX(*call_info) == ZEND_CALL_NESTED_CODE)
#endif
{
memcpy(buf, "[INCLUDE_OR_EVAL]", sizeof("[INCLUDE_OR_EVAL]"));
}
else
{
ZEND_ASSERT(0);
}
}
else
{
if (0 > trace_get_strz(traced_pid, buf, buf_size, function_name + offsetof(zend_string, val)))
{
return -__LINE__;
}
}
}
else
{
memcpy(buf, "???", sizeof("???"));
}
fprintf(slowlog, "[0x%" PTR_FMT "lx] ", execute_data);
fprintf(slowlog, "%s()", buf);
*buf = '\0';
if (0 > trace_get_long(traced_pid, execute_data + offsetof(zend_execute_data, prev_execute_data), &l))
{
return -__LINE__;
}
execute_data = prev = l;
while (prev)
{
zend_uchar *type;
if (0 > trace_get_long(traced_pid, prev + offsetof(zend_execute_data, func), &l))
{
return -__LINE__;
}
function = l;
if (!valid_ptr(function))
{
break;
}
type = (zend_uchar *) &l;
if (0 > trace_get_long(traced_pid, function + offsetof(zend_function, type), &l))
{
return -__LINE__;
}
if (ZEND_USER_CODE(*type))
{
if (0 > trace_get_long(traced_pid, function + offsetof(zend_op_array, filename), &l))
{
return -__LINE__;
}
file_name = l;
if (0 > trace_get_strz(traced_pid, buf, buf_size, file_name + offsetof(zend_string, val)))
{
return -__LINE__;
}
if (0 > trace_get_long(traced_pid, prev + offsetof(zend_execute_data, opline), &l))
{
return -__LINE__;
}
if (valid_ptr(l))
{
long opline = l;
uint32_t *lu = (uint32_t *) &l;
if (0 > trace_get_long(traced_pid, opline + offsetof(struct _zend_op, lineno), &l))
{
return -__LINE__;
}
lineno = *lu;
}
break;
}
if (0 > trace_get_long(traced_pid, prev + offsetof(zend_execute_data, prev_execute_data), &l))
{
return -__LINE__;
}
prev = l;
}
fprintf(slowlog, " %s:%u\n", *buf ? buf : "unknown", lineno);
if (0 == --callers_limit)
{
break;
}
}
#else
while (execute_data)
{
long function;
long function_name;
long file_name;
long prev;
uint lineno = 0;
if (0 > trace_get_long(traced_pid, execute_data + offsetof(zend_execute_data, func), &l))
{
return -1;
}
function = l;
if (valid_ptr(function))
{
if (0 > trace_get_long(traced_pid, function + offsetof(zend_function, common.function_name), &l))
{
return -1;
}
function_name = l;
if (function_name == 0)
{
uint32_t *call_info = (uint32_t *)&l;
if (0 > trace_get_long(traced_pid, execute_data + offsetof(zend_execute_data, This.u1.type_info), &l))
{
return -1;
}
if (ZEND_CALL_KIND_EX((*call_info) >> 24) == ZEND_CALL_TOP_CODE)
{
return 0;
}
else if (ZEND_CALL_KIND_EX(*(call_info) >> 24) == ZEND_CALL_NESTED_CODE)
{
memcpy(buf, "[INCLUDE_OR_EVAL]", sizeof("[INCLUDE_OR_EVAL]"));
}
else
{
ZEND_ASSERT(0);
}
}
else
{
if (0 > trace_get_strz(traced_pid, buf, buf_size, function_name + offsetof(zend_string, val)))
{
return -1;
}
}
}
else
{
memcpy(buf, "???", sizeof("???"));
}
fprintf(slowlog, "[0x%" PTR_FMT "lx] ", execute_data);
fprintf(slowlog, "%s()", buf);
*buf = '\0';
if (0 > trace_get_long(traced_pid, execute_data + offsetof(zend_execute_data, prev_execute_data), &l))
{
return -1;
}
execute_data = prev = l;
while (prev)
{
zend_uchar *type;
if (0 > trace_get_long(traced_pid, prev + offsetof(zend_execute_data, func), &l))
{
return -1;
}
function = l;
if (!valid_ptr(function))
{
break;
}
type = (zend_uchar *)&l;
if (0 > trace_get_long(traced_pid, function + offsetof(zend_function, type), &l))
{
return -1;
}
if (ZEND_USER_CODE(*type))
{
if (0 > trace_get_long(traced_pid, function + offsetof(zend_op_array, filename), &l))
{
return -1;
}
file_name = l;
if (0 > trace_get_strz(traced_pid, buf, buf_size, file_name + offsetof(zend_string, val)))
{
return -1;
}
if (0 > trace_get_long(traced_pid, prev + offsetof(zend_execute_data, opline), &l))
{
return -1;
}
if (valid_ptr(l))
{
long opline = l;
uint32_t *lu = (uint32_t *) &l;
if (0 > trace_get_long(traced_pid, opline + offsetof(struct _zend_op, lineno), &l))
{
return -1;
}
lineno = *lu;
}
break;
}
if (0 > trace_get_long(traced_pid, prev + offsetof(zend_execute_data, prev_execute_data), &l))
{
return -1;
}
prev = l;
}
fprintf(slowlog, " %s:%u\n", *buf ? buf : "unknown", lineno);
if (0 == --callers_limit)
{
break;
}
}
#endif
return 0;
}
#endif