Commit | Line | Data |
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7e4b21b8 TZ |
1 | /* |
2 | * trace-event-python. Feed trace events to an embedded Python interpreter. | |
3 | * | |
4 | * Copyright (C) 2010 Tom Zanussi <tzanussi@gmail.com> | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or modify | |
7 | * it under the terms of the GNU General Public License as published by | |
8 | * the Free Software Foundation; either version 2 of the License, or | |
9 | * (at your option) any later version. | |
10 | * | |
11 | * This program is distributed in the hope that it will be useful, | |
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | * GNU General Public License for more details. | |
15 | * | |
16 | * You should have received a copy of the GNU General Public License | |
17 | * along with this program; if not, write to the Free Software | |
18 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
19 | * | |
20 | */ | |
21 | ||
22 | #include <Python.h> | |
23 | ||
24 | #include <stdio.h> | |
25 | #include <stdlib.h> | |
26 | #include <string.h> | |
7e4b21b8 TZ |
27 | #include <errno.h> |
28 | ||
29 | #include "../../perf.h" | |
30 | #include "../util.h" | |
743eb868 ACM |
31 | #include "../event.h" |
32 | #include "../thread.h" | |
7e4b21b8 TZ |
33 | #include "../trace-event.h" |
34 | ||
35 | PyMODINIT_FUNC initperf_trace_context(void); | |
36 | ||
37 | #define FTRACE_MAX_EVENT \ | |
38 | ((1 << (sizeof(unsigned short) * 8)) - 1) | |
39 | ||
40 | struct event *events[FTRACE_MAX_EVENT]; | |
41 | ||
42 | #define MAX_FIELDS 64 | |
43 | #define N_COMMON_FIELDS 7 | |
44 | ||
45 | extern struct scripting_context *scripting_context; | |
46 | ||
47 | static char *cur_field_name; | |
48 | static int zero_flag_atom; | |
49 | ||
50 | static PyObject *main_module, *main_dict; | |
51 | ||
52 | static void handler_call_die(const char *handler_name) | |
53 | { | |
54 | PyErr_Print(); | |
55 | Py_FatalError("problem in Python trace event handler"); | |
56 | } | |
57 | ||
58 | static void define_value(enum print_arg_type field_type, | |
59 | const char *ev_name, | |
60 | const char *field_name, | |
61 | const char *field_value, | |
62 | const char *field_str) | |
63 | { | |
64 | const char *handler_name = "define_flag_value"; | |
65 | PyObject *handler, *t, *retval; | |
66 | unsigned long long value; | |
67 | unsigned n = 0; | |
68 | ||
69 | if (field_type == PRINT_SYMBOL) | |
70 | handler_name = "define_symbolic_value"; | |
71 | ||
44ad9cd8 | 72 | t = PyTuple_New(4); |
7e4b21b8 TZ |
73 | if (!t) |
74 | Py_FatalError("couldn't create Python tuple"); | |
75 | ||
76 | value = eval_flag(field_value); | |
77 | ||
78 | PyTuple_SetItem(t, n++, PyString_FromString(ev_name)); | |
79 | PyTuple_SetItem(t, n++, PyString_FromString(field_name)); | |
80 | PyTuple_SetItem(t, n++, PyInt_FromLong(value)); | |
81 | PyTuple_SetItem(t, n++, PyString_FromString(field_str)); | |
82 | ||
7e4b21b8 TZ |
83 | handler = PyDict_GetItemString(main_dict, handler_name); |
84 | if (handler && PyCallable_Check(handler)) { | |
85 | retval = PyObject_CallObject(handler, t); | |
86 | if (retval == NULL) | |
87 | handler_call_die(handler_name); | |
88 | } | |
89 | ||
90 | Py_DECREF(t); | |
91 | } | |
92 | ||
93 | static void define_values(enum print_arg_type field_type, | |
94 | struct print_flag_sym *field, | |
95 | const char *ev_name, | |
96 | const char *field_name) | |
97 | { | |
98 | define_value(field_type, ev_name, field_name, field->value, | |
99 | field->str); | |
100 | ||
101 | if (field->next) | |
102 | define_values(field_type, field->next, ev_name, field_name); | |
103 | } | |
104 | ||
105 | static void define_field(enum print_arg_type field_type, | |
106 | const char *ev_name, | |
107 | const char *field_name, | |
108 | const char *delim) | |
109 | { | |
110 | const char *handler_name = "define_flag_field"; | |
111 | PyObject *handler, *t, *retval; | |
112 | unsigned n = 0; | |
113 | ||
114 | if (field_type == PRINT_SYMBOL) | |
115 | handler_name = "define_symbolic_field"; | |
116 | ||
44ad9cd8 TZ |
117 | if (field_type == PRINT_FLAGS) |
118 | t = PyTuple_New(3); | |
119 | else | |
120 | t = PyTuple_New(2); | |
7e4b21b8 TZ |
121 | if (!t) |
122 | Py_FatalError("couldn't create Python tuple"); | |
123 | ||
124 | PyTuple_SetItem(t, n++, PyString_FromString(ev_name)); | |
125 | PyTuple_SetItem(t, n++, PyString_FromString(field_name)); | |
126 | if (field_type == PRINT_FLAGS) | |
127 | PyTuple_SetItem(t, n++, PyString_FromString(delim)); | |
128 | ||
7e4b21b8 TZ |
129 | handler = PyDict_GetItemString(main_dict, handler_name); |
130 | if (handler && PyCallable_Check(handler)) { | |
131 | retval = PyObject_CallObject(handler, t); | |
132 | if (retval == NULL) | |
133 | handler_call_die(handler_name); | |
134 | } | |
135 | ||
136 | Py_DECREF(t); | |
137 | } | |
138 | ||
139 | static void define_event_symbols(struct event *event, | |
140 | const char *ev_name, | |
141 | struct print_arg *args) | |
142 | { | |
143 | switch (args->type) { | |
144 | case PRINT_NULL: | |
145 | break; | |
146 | case PRINT_ATOM: | |
147 | define_value(PRINT_FLAGS, ev_name, cur_field_name, "0", | |
148 | args->atom.atom); | |
149 | zero_flag_atom = 0; | |
150 | break; | |
151 | case PRINT_FIELD: | |
152 | if (cur_field_name) | |
153 | free(cur_field_name); | |
154 | cur_field_name = strdup(args->field.name); | |
155 | break; | |
156 | case PRINT_FLAGS: | |
157 | define_event_symbols(event, ev_name, args->flags.field); | |
158 | define_field(PRINT_FLAGS, ev_name, cur_field_name, | |
159 | args->flags.delim); | |
160 | define_values(PRINT_FLAGS, args->flags.flags, ev_name, | |
161 | cur_field_name); | |
162 | break; | |
163 | case PRINT_SYMBOL: | |
164 | define_event_symbols(event, ev_name, args->symbol.field); | |
165 | define_field(PRINT_SYMBOL, ev_name, cur_field_name, NULL); | |
166 | define_values(PRINT_SYMBOL, args->symbol.symbols, ev_name, | |
167 | cur_field_name); | |
168 | break; | |
169 | case PRINT_STRING: | |
170 | break; | |
171 | case PRINT_TYPE: | |
172 | define_event_symbols(event, ev_name, args->typecast.item); | |
173 | break; | |
174 | case PRINT_OP: | |
175 | if (strcmp(args->op.op, ":") == 0) | |
176 | zero_flag_atom = 1; | |
177 | define_event_symbols(event, ev_name, args->op.left); | |
178 | define_event_symbols(event, ev_name, args->op.right); | |
179 | break; | |
180 | default: | |
181 | /* we should warn... */ | |
182 | return; | |
183 | } | |
184 | ||
185 | if (args->next) | |
186 | define_event_symbols(event, ev_name, args->next); | |
187 | } | |
188 | ||
189 | static inline struct event *find_cache_event(int type) | |
190 | { | |
191 | static char ev_name[256]; | |
192 | struct event *event; | |
193 | ||
194 | if (events[type]) | |
195 | return events[type]; | |
196 | ||
197 | events[type] = event = trace_find_event(type); | |
198 | if (!event) | |
199 | return NULL; | |
200 | ||
201 | sprintf(ev_name, "%s__%s", event->system, event->name); | |
202 | ||
203 | define_event_symbols(event, ev_name, event->print_fmt.args); | |
204 | ||
205 | return event; | |
206 | } | |
207 | ||
be6d842a DA |
208 | static void python_process_event(union perf_event *pevent __unused, |
209 | struct perf_sample *sample, | |
9e69c210 | 210 | struct perf_evsel *evsel __unused, |
743eb868 | 211 | struct machine *machine __unused, |
be6d842a | 212 | struct thread *thread) |
7e4b21b8 | 213 | { |
c0251485 | 214 | PyObject *handler, *retval, *context, *t, *obj, *dict = NULL; |
7e4b21b8 TZ |
215 | static char handler_name[256]; |
216 | struct format_field *field; | |
217 | unsigned long long val; | |
218 | unsigned long s, ns; | |
219 | struct event *event; | |
220 | unsigned n = 0; | |
221 | int type; | |
222 | int pid; | |
be6d842a DA |
223 | int cpu = sample->cpu; |
224 | void *data = sample->raw_data; | |
225 | unsigned long long nsecs = sample->time; | |
226 | char *comm = thread->comm; | |
7e4b21b8 TZ |
227 | |
228 | t = PyTuple_New(MAX_FIELDS); | |
229 | if (!t) | |
230 | Py_FatalError("couldn't create Python tuple"); | |
231 | ||
232 | type = trace_parse_common_type(data); | |
233 | ||
234 | event = find_cache_event(type); | |
235 | if (!event) | |
236 | die("ug! no event found for type %d", type); | |
237 | ||
238 | pid = trace_parse_common_pid(data); | |
239 | ||
240 | sprintf(handler_name, "%s__%s", event->system, event->name); | |
241 | ||
c0251485 PT |
242 | handler = PyDict_GetItemString(main_dict, handler_name); |
243 | if (handler && !PyCallable_Check(handler)) | |
244 | handler = NULL; | |
245 | if (!handler) { | |
246 | dict = PyDict_New(); | |
247 | if (!dict) | |
248 | Py_FatalError("couldn't create Python dict"); | |
249 | } | |
7e4b21b8 TZ |
250 | s = nsecs / NSECS_PER_SEC; |
251 | ns = nsecs - s * NSECS_PER_SEC; | |
252 | ||
253 | scripting_context->event_data = data; | |
254 | ||
255 | context = PyCObject_FromVoidPtr(scripting_context, NULL); | |
256 | ||
257 | PyTuple_SetItem(t, n++, PyString_FromString(handler_name)); | |
fb7d0b3c | 258 | PyTuple_SetItem(t, n++, context); |
7e4b21b8 | 259 | |
c0251485 PT |
260 | if (handler) { |
261 | PyTuple_SetItem(t, n++, PyInt_FromLong(cpu)); | |
262 | PyTuple_SetItem(t, n++, PyInt_FromLong(s)); | |
263 | PyTuple_SetItem(t, n++, PyInt_FromLong(ns)); | |
264 | PyTuple_SetItem(t, n++, PyInt_FromLong(pid)); | |
265 | PyTuple_SetItem(t, n++, PyString_FromString(comm)); | |
266 | } else { | |
267 | PyDict_SetItemString(dict, "common_cpu", PyInt_FromLong(cpu)); | |
268 | PyDict_SetItemString(dict, "common_s", PyInt_FromLong(s)); | |
269 | PyDict_SetItemString(dict, "common_ns", PyInt_FromLong(ns)); | |
270 | PyDict_SetItemString(dict, "common_pid", PyInt_FromLong(pid)); | |
271 | PyDict_SetItemString(dict, "common_comm", PyString_FromString(comm)); | |
272 | } | |
7e4b21b8 TZ |
273 | for (field = event->format.fields; field; field = field->next) { |
274 | if (field->flags & FIELD_IS_STRING) { | |
275 | int offset; | |
276 | if (field->flags & FIELD_IS_DYNAMIC) { | |
277 | offset = *(int *)(data + field->offset); | |
278 | offset &= 0xffff; | |
279 | } else | |
280 | offset = field->offset; | |
b1dcc03c | 281 | obj = PyString_FromString((char *)data + offset); |
7e4b21b8 TZ |
282 | } else { /* FIELD_IS_NUMERIC */ |
283 | val = read_size(data + field->offset, field->size); | |
284 | if (field->flags & FIELD_IS_SIGNED) { | |
b1dcc03c TZ |
285 | if ((long long)val >= LONG_MIN && |
286 | (long long)val <= LONG_MAX) | |
287 | obj = PyInt_FromLong(val); | |
288 | else | |
289 | obj = PyLong_FromLongLong(val); | |
7e4b21b8 | 290 | } else { |
b1dcc03c TZ |
291 | if (val <= LONG_MAX) |
292 | obj = PyInt_FromLong(val); | |
293 | else | |
294 | obj = PyLong_FromUnsignedLongLong(val); | |
7e4b21b8 TZ |
295 | } |
296 | } | |
c0251485 PT |
297 | if (handler) |
298 | PyTuple_SetItem(t, n++, obj); | |
299 | else | |
300 | PyDict_SetItemString(dict, field->name, obj); | |
301 | ||
7e4b21b8 | 302 | } |
c0251485 PT |
303 | if (!handler) |
304 | PyTuple_SetItem(t, n++, dict); | |
7e4b21b8 TZ |
305 | |
306 | if (_PyTuple_Resize(&t, n) == -1) | |
307 | Py_FatalError("error resizing Python tuple"); | |
308 | ||
c0251485 | 309 | if (handler) { |
7e4b21b8 TZ |
310 | retval = PyObject_CallObject(handler, t); |
311 | if (retval == NULL) | |
312 | handler_call_die(handler_name); | |
313 | } else { | |
314 | handler = PyDict_GetItemString(main_dict, "trace_unhandled"); | |
315 | if (handler && PyCallable_Check(handler)) { | |
7e4b21b8 TZ |
316 | |
317 | retval = PyObject_CallObject(handler, t); | |
318 | if (retval == NULL) | |
319 | handler_call_die("trace_unhandled"); | |
320 | } | |
c0251485 | 321 | Py_DECREF(dict); |
7e4b21b8 TZ |
322 | } |
323 | ||
324 | Py_DECREF(t); | |
325 | } | |
326 | ||
327 | static int run_start_sub(void) | |
328 | { | |
329 | PyObject *handler, *retval; | |
330 | int err = 0; | |
331 | ||
332 | main_module = PyImport_AddModule("__main__"); | |
333 | if (main_module == NULL) | |
334 | return -1; | |
335 | Py_INCREF(main_module); | |
336 | ||
337 | main_dict = PyModule_GetDict(main_module); | |
338 | if (main_dict == NULL) { | |
339 | err = -1; | |
340 | goto error; | |
341 | } | |
342 | Py_INCREF(main_dict); | |
343 | ||
344 | handler = PyDict_GetItemString(main_dict, "trace_begin"); | |
345 | if (handler == NULL || !PyCallable_Check(handler)) | |
346 | goto out; | |
347 | ||
348 | retval = PyObject_CallObject(handler, NULL); | |
349 | if (retval == NULL) | |
350 | handler_call_die("trace_begin"); | |
351 | ||
352 | Py_DECREF(retval); | |
353 | return err; | |
354 | error: | |
355 | Py_XDECREF(main_dict); | |
356 | Py_XDECREF(main_module); | |
357 | out: | |
358 | return err; | |
359 | } | |
360 | ||
361 | /* | |
362 | * Start trace script | |
363 | */ | |
364 | static int python_start_script(const char *script, int argc, const char **argv) | |
365 | { | |
366 | const char **command_line; | |
367 | char buf[PATH_MAX]; | |
368 | int i, err = 0; | |
369 | FILE *fp; | |
370 | ||
371 | command_line = malloc((argc + 1) * sizeof(const char *)); | |
372 | command_line[0] = script; | |
373 | for (i = 1; i < argc + 1; i++) | |
374 | command_line[i] = argv[i - 1]; | |
375 | ||
376 | Py_Initialize(); | |
377 | ||
378 | initperf_trace_context(); | |
379 | ||
380 | PySys_SetArgv(argc + 1, (char **)command_line); | |
381 | ||
382 | fp = fopen(script, "r"); | |
383 | if (!fp) { | |
384 | sprintf(buf, "Can't open python script \"%s\"", script); | |
385 | perror(buf); | |
386 | err = -1; | |
387 | goto error; | |
388 | } | |
389 | ||
390 | err = PyRun_SimpleFile(fp, script); | |
391 | if (err) { | |
392 | fprintf(stderr, "Error running python script %s\n", script); | |
393 | goto error; | |
394 | } | |
395 | ||
396 | err = run_start_sub(); | |
397 | if (err) { | |
398 | fprintf(stderr, "Error starting python script %s\n", script); | |
399 | goto error; | |
400 | } | |
401 | ||
402 | free(command_line); | |
7e4b21b8 TZ |
403 | |
404 | return err; | |
405 | error: | |
406 | Py_Finalize(); | |
407 | free(command_line); | |
408 | ||
409 | return err; | |
410 | } | |
411 | ||
412 | /* | |
413 | * Stop trace script | |
414 | */ | |
415 | static int python_stop_script(void) | |
416 | { | |
417 | PyObject *handler, *retval; | |
418 | int err = 0; | |
419 | ||
420 | handler = PyDict_GetItemString(main_dict, "trace_end"); | |
421 | if (handler == NULL || !PyCallable_Check(handler)) | |
422 | goto out; | |
423 | ||
424 | retval = PyObject_CallObject(handler, NULL); | |
425 | if (retval == NULL) | |
426 | handler_call_die("trace_end"); | |
427 | else | |
428 | Py_DECREF(retval); | |
429 | out: | |
430 | Py_XDECREF(main_dict); | |
431 | Py_XDECREF(main_module); | |
432 | Py_Finalize(); | |
433 | ||
7e4b21b8 TZ |
434 | return err; |
435 | } | |
436 | ||
437 | static int python_generate_script(const char *outfile) | |
438 | { | |
439 | struct event *event = NULL; | |
440 | struct format_field *f; | |
441 | char fname[PATH_MAX]; | |
442 | int not_first, count; | |
443 | FILE *ofp; | |
444 | ||
445 | sprintf(fname, "%s.py", outfile); | |
446 | ofp = fopen(fname, "w"); | |
447 | if (ofp == NULL) { | |
448 | fprintf(stderr, "couldn't open %s\n", fname); | |
449 | return -1; | |
450 | } | |
133dc4c3 IM |
451 | fprintf(ofp, "# perf script event handlers, " |
452 | "generated by perf script -g python\n"); | |
7e4b21b8 TZ |
453 | |
454 | fprintf(ofp, "# Licensed under the terms of the GNU GPL" | |
455 | " License version 2\n\n"); | |
456 | ||
457 | fprintf(ofp, "# The common_* event handler fields are the most useful " | |
458 | "fields common to\n"); | |
459 | ||
460 | fprintf(ofp, "# all events. They don't necessarily correspond to " | |
461 | "the 'common_*' fields\n"); | |
462 | ||
463 | fprintf(ofp, "# in the format files. Those fields not available as " | |
464 | "handler params can\n"); | |
465 | ||
466 | fprintf(ofp, "# be retrieved using Python functions of the form " | |
467 | "common_*(context).\n"); | |
468 | ||
469 | fprintf(ofp, "# See the perf-trace-python Documentation for the list " | |
470 | "of available functions.\n\n"); | |
471 | ||
472 | fprintf(ofp, "import os\n"); | |
473 | fprintf(ofp, "import sys\n\n"); | |
474 | ||
475 | fprintf(ofp, "sys.path.append(os.environ['PERF_EXEC_PATH'] + \\\n"); | |
476 | fprintf(ofp, "\t'/scripts/python/Perf-Trace-Util/lib/Perf/Trace')\n"); | |
477 | fprintf(ofp, "\nfrom perf_trace_context import *\n"); | |
478 | fprintf(ofp, "from Core import *\n\n\n"); | |
479 | ||
480 | fprintf(ofp, "def trace_begin():\n"); | |
481 | fprintf(ofp, "\tprint \"in trace_begin\"\n\n"); | |
482 | ||
483 | fprintf(ofp, "def trace_end():\n"); | |
484 | fprintf(ofp, "\tprint \"in trace_end\"\n\n"); | |
485 | ||
486 | while ((event = trace_find_next_event(event))) { | |
487 | fprintf(ofp, "def %s__%s(", event->system, event->name); | |
488 | fprintf(ofp, "event_name, "); | |
489 | fprintf(ofp, "context, "); | |
490 | fprintf(ofp, "common_cpu,\n"); | |
491 | fprintf(ofp, "\tcommon_secs, "); | |
492 | fprintf(ofp, "common_nsecs, "); | |
493 | fprintf(ofp, "common_pid, "); | |
494 | fprintf(ofp, "common_comm,\n\t"); | |
495 | ||
496 | not_first = 0; | |
497 | count = 0; | |
498 | ||
499 | for (f = event->format.fields; f; f = f->next) { | |
500 | if (not_first++) | |
501 | fprintf(ofp, ", "); | |
502 | if (++count % 5 == 0) | |
503 | fprintf(ofp, "\n\t"); | |
504 | ||
505 | fprintf(ofp, "%s", f->name); | |
506 | } | |
507 | fprintf(ofp, "):\n"); | |
508 | ||
509 | fprintf(ofp, "\t\tprint_header(event_name, common_cpu, " | |
510 | "common_secs, common_nsecs,\n\t\t\t" | |
511 | "common_pid, common_comm)\n\n"); | |
512 | ||
513 | fprintf(ofp, "\t\tprint \""); | |
514 | ||
515 | not_first = 0; | |
516 | count = 0; | |
517 | ||
518 | for (f = event->format.fields; f; f = f->next) { | |
519 | if (not_first++) | |
520 | fprintf(ofp, ", "); | |
521 | if (count && count % 3 == 0) { | |
522 | fprintf(ofp, "\" \\\n\t\t\""); | |
523 | } | |
524 | count++; | |
525 | ||
526 | fprintf(ofp, "%s=", f->name); | |
527 | if (f->flags & FIELD_IS_STRING || | |
528 | f->flags & FIELD_IS_FLAG || | |
529 | f->flags & FIELD_IS_SYMBOLIC) | |
530 | fprintf(ofp, "%%s"); | |
531 | else if (f->flags & FIELD_IS_SIGNED) | |
532 | fprintf(ofp, "%%d"); | |
533 | else | |
534 | fprintf(ofp, "%%u"); | |
535 | } | |
536 | ||
537 | fprintf(ofp, "\\n\" %% \\\n\t\t("); | |
538 | ||
539 | not_first = 0; | |
540 | count = 0; | |
541 | ||
542 | for (f = event->format.fields; f; f = f->next) { | |
543 | if (not_first++) | |
544 | fprintf(ofp, ", "); | |
545 | ||
546 | if (++count % 5 == 0) | |
547 | fprintf(ofp, "\n\t\t"); | |
548 | ||
549 | if (f->flags & FIELD_IS_FLAG) { | |
550 | if ((count - 1) % 5 != 0) { | |
551 | fprintf(ofp, "\n\t\t"); | |
552 | count = 4; | |
553 | } | |
554 | fprintf(ofp, "flag_str(\""); | |
555 | fprintf(ofp, "%s__%s\", ", event->system, | |
556 | event->name); | |
557 | fprintf(ofp, "\"%s\", %s)", f->name, | |
558 | f->name); | |
559 | } else if (f->flags & FIELD_IS_SYMBOLIC) { | |
560 | if ((count - 1) % 5 != 0) { | |
561 | fprintf(ofp, "\n\t\t"); | |
562 | count = 4; | |
563 | } | |
564 | fprintf(ofp, "symbol_str(\""); | |
565 | fprintf(ofp, "%s__%s\", ", event->system, | |
566 | event->name); | |
567 | fprintf(ofp, "\"%s\", %s)", f->name, | |
568 | f->name); | |
569 | } else | |
570 | fprintf(ofp, "%s", f->name); | |
571 | } | |
572 | ||
573 | fprintf(ofp, "),\n\n"); | |
574 | } | |
575 | ||
576 | fprintf(ofp, "def trace_unhandled(event_name, context, " | |
c0251485 | 577 | "event_fields_dict):\n"); |
7e4b21b8 | 578 | |
c0251485 PT |
579 | fprintf(ofp, "\t\tprint ' '.join(['%%s=%%s'%%(k,str(v))" |
580 | "for k,v in sorted(event_fields_dict.items())])\n\n"); | |
7e4b21b8 TZ |
581 | |
582 | fprintf(ofp, "def print_header(" | |
583 | "event_name, cpu, secs, nsecs, pid, comm):\n" | |
584 | "\tprint \"%%-20s %%5u %%05u.%%09u %%8u %%-20s \" %% \\\n\t" | |
585 | "(event_name, cpu, secs, nsecs, pid, comm),\n"); | |
586 | ||
587 | fclose(ofp); | |
588 | ||
589 | fprintf(stderr, "generated Python script: %s\n", fname); | |
590 | ||
591 | return 0; | |
592 | } | |
593 | ||
594 | struct scripting_ops python_scripting_ops = { | |
595 | .name = "Python", | |
596 | .start_script = python_start_script, | |
597 | .stop_script = python_stop_script, | |
598 | .process_event = python_process_event, | |
599 | .generate_script = python_generate_script, | |
600 | }; |