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 <inttypes.h>
25 #include <stdio.h>
26 #include <stdlib.h>
27 #include <string.h>
28 #include <stdbool.h>
29 #include <errno.h>
30 #include <linux/bitmap.h>
31 #include <linux/compiler.h>
32 #include <linux/time64.h>
33 
34 #include "../build-id.h"
35 #include "../counts.h"
36 #include "../debug.h"
37 #include "../dso.h"
38 #include "../callchain.h"
39 #include "../env.h"
40 #include "../evsel.h"
41 #include "../event.h"
42 #include "../thread.h"
43 #include "../comm.h"
44 #include "../machine.h"
45 #include "../db-export.h"
46 #include "../thread-stack.h"
47 #include "../trace-event.h"
48 #include "../call-path.h"
49 #include "map.h"
50 #include "symbol.h"
51 #include "thread_map.h"
52 #include "print_binary.h"
53 #include "stat.h"
54 #include "mem-events.h"
55 
56 #if PY_MAJOR_VERSION < 3
57 #define _PyUnicode_FromString(arg) \
58   PyString_FromString(arg)
59 #define _PyUnicode_FromStringAndSize(arg1, arg2) \
60   PyString_FromStringAndSize((arg1), (arg2))
61 #define _PyBytes_FromStringAndSize(arg1, arg2) \
62   PyString_FromStringAndSize((arg1), (arg2))
63 #define _PyLong_FromLong(arg) \
64   PyInt_FromLong(arg)
65 #define _PyLong_AsLong(arg) \
66   PyInt_AsLong(arg)
67 #define _PyCapsule_New(arg1, arg2, arg3) \
68   PyCObject_FromVoidPtr((arg1), (arg2))
69 
70 PyMODINIT_FUNC initperf_trace_context(void);
71 #else
72 #define _PyUnicode_FromString(arg) \
73   PyUnicode_FromString(arg)
74 #define _PyUnicode_FromStringAndSize(arg1, arg2) \
75   PyUnicode_FromStringAndSize((arg1), (arg2))
76 #define _PyBytes_FromStringAndSize(arg1, arg2) \
77   PyBytes_FromStringAndSize((arg1), (arg2))
78 #define _PyLong_FromLong(arg) \
79   PyLong_FromLong(arg)
80 #define _PyLong_AsLong(arg) \
81   PyLong_AsLong(arg)
82 #define _PyCapsule_New(arg1, arg2, arg3) \
83   PyCapsule_New((arg1), (arg2), (arg3))
84 
85 PyMODINIT_FUNC PyInit_perf_trace_context(void);
86 #endif
87 
88 #define TRACE_EVENT_TYPE_MAX				\
89 	((1 << (sizeof(unsigned short) * 8)) - 1)
90 
91 static DECLARE_BITMAP(events_defined, TRACE_EVENT_TYPE_MAX);
92 
93 #define MAX_FIELDS	64
94 #define N_COMMON_FIELDS	7
95 
96 extern struct scripting_context *scripting_context;
97 
98 static char *cur_field_name;
99 static int zero_flag_atom;
100 
101 static PyObject *main_module, *main_dict;
102 
103 struct tables {
104 	struct db_export	dbe;
105 	PyObject		*evsel_handler;
106 	PyObject		*machine_handler;
107 	PyObject		*thread_handler;
108 	PyObject		*comm_handler;
109 	PyObject		*comm_thread_handler;
110 	PyObject		*dso_handler;
111 	PyObject		*symbol_handler;
112 	PyObject		*branch_type_handler;
113 	PyObject		*sample_handler;
114 	PyObject		*call_path_handler;
115 	PyObject		*call_return_handler;
116 	PyObject		*synth_handler;
117 	PyObject		*context_switch_handler;
118 	bool			db_export_mode;
119 };
120 
121 static struct tables tables_global;
122 
123 static void handler_call_die(const char *handler_name) __noreturn;
handler_call_die(const char * handler_name)124 static void handler_call_die(const char *handler_name)
125 {
126 	PyErr_Print();
127 	Py_FatalError("problem in Python trace event handler");
128 	// Py_FatalError does not return
129 	// but we have to make the compiler happy
130 	abort();
131 }
132 
133 /*
134  * Insert val into the dictionary and decrement the reference counter.
135  * This is necessary for dictionaries since PyDict_SetItemString() does not
136  * steal a reference, as opposed to PyTuple_SetItem().
137  */
pydict_set_item_string_decref(PyObject * dict,const char * key,PyObject * val)138 static void pydict_set_item_string_decref(PyObject *dict, const char *key, PyObject *val)
139 {
140 	PyDict_SetItemString(dict, key, val);
141 	Py_DECREF(val);
142 }
143 
get_handler(const char * handler_name)144 static PyObject *get_handler(const char *handler_name)
145 {
146 	PyObject *handler;
147 
148 	handler = PyDict_GetItemString(main_dict, handler_name);
149 	if (handler && !PyCallable_Check(handler))
150 		return NULL;
151 	return handler;
152 }
153 
get_argument_count(PyObject * handler)154 static int get_argument_count(PyObject *handler)
155 {
156 	int arg_count = 0;
157 
158 	/*
159 	 * The attribute for the code object is func_code in Python 2,
160 	 * whereas it is __code__ in Python 3.0+.
161 	 */
162 	PyObject *code_obj = PyObject_GetAttrString(handler,
163 		"func_code");
164 	if (PyErr_Occurred()) {
165 		PyErr_Clear();
166 		code_obj = PyObject_GetAttrString(handler,
167 			"__code__");
168 	}
169 	PyErr_Clear();
170 	if (code_obj) {
171 		PyObject *arg_count_obj = PyObject_GetAttrString(code_obj,
172 			"co_argcount");
173 		if (arg_count_obj) {
174 			arg_count = (int) _PyLong_AsLong(arg_count_obj);
175 			Py_DECREF(arg_count_obj);
176 		}
177 		Py_DECREF(code_obj);
178 	}
179 	return arg_count;
180 }
181 
call_object(PyObject * handler,PyObject * args,const char * die_msg)182 static void call_object(PyObject *handler, PyObject *args, const char *die_msg)
183 {
184 	PyObject *retval;
185 
186 	retval = PyObject_CallObject(handler, args);
187 	if (retval == NULL)
188 		handler_call_die(die_msg);
189 	Py_DECREF(retval);
190 }
191 
try_call_object(const char * handler_name,PyObject * args)192 static void try_call_object(const char *handler_name, PyObject *args)
193 {
194 	PyObject *handler;
195 
196 	handler = get_handler(handler_name);
197 	if (handler)
198 		call_object(handler, args, handler_name);
199 }
200 
define_value(enum tep_print_arg_type field_type,const char * ev_name,const char * field_name,const char * field_value,const char * field_str)201 static void define_value(enum tep_print_arg_type field_type,
202 			 const char *ev_name,
203 			 const char *field_name,
204 			 const char *field_value,
205 			 const char *field_str)
206 {
207 	const char *handler_name = "define_flag_value";
208 	PyObject *t;
209 	unsigned long long value;
210 	unsigned n = 0;
211 
212 	if (field_type == TEP_PRINT_SYMBOL)
213 		handler_name = "define_symbolic_value";
214 
215 	t = PyTuple_New(4);
216 	if (!t)
217 		Py_FatalError("couldn't create Python tuple");
218 
219 	value = eval_flag(field_value);
220 
221 	PyTuple_SetItem(t, n++, _PyUnicode_FromString(ev_name));
222 	PyTuple_SetItem(t, n++, _PyUnicode_FromString(field_name));
223 	PyTuple_SetItem(t, n++, _PyLong_FromLong(value));
224 	PyTuple_SetItem(t, n++, _PyUnicode_FromString(field_str));
225 
226 	try_call_object(handler_name, t);
227 
228 	Py_DECREF(t);
229 }
230 
define_values(enum tep_print_arg_type field_type,struct tep_print_flag_sym * field,const char * ev_name,const char * field_name)231 static void define_values(enum tep_print_arg_type field_type,
232 			  struct tep_print_flag_sym *field,
233 			  const char *ev_name,
234 			  const char *field_name)
235 {
236 	define_value(field_type, ev_name, field_name, field->value,
237 		     field->str);
238 
239 	if (field->next)
240 		define_values(field_type, field->next, ev_name, field_name);
241 }
242 
define_field(enum tep_print_arg_type field_type,const char * ev_name,const char * field_name,const char * delim)243 static void define_field(enum tep_print_arg_type field_type,
244 			 const char *ev_name,
245 			 const char *field_name,
246 			 const char *delim)
247 {
248 	const char *handler_name = "define_flag_field";
249 	PyObject *t;
250 	unsigned n = 0;
251 
252 	if (field_type == TEP_PRINT_SYMBOL)
253 		handler_name = "define_symbolic_field";
254 
255 	if (field_type == TEP_PRINT_FLAGS)
256 		t = PyTuple_New(3);
257 	else
258 		t = PyTuple_New(2);
259 	if (!t)
260 		Py_FatalError("couldn't create Python tuple");
261 
262 	PyTuple_SetItem(t, n++, _PyUnicode_FromString(ev_name));
263 	PyTuple_SetItem(t, n++, _PyUnicode_FromString(field_name));
264 	if (field_type == TEP_PRINT_FLAGS)
265 		PyTuple_SetItem(t, n++, _PyUnicode_FromString(delim));
266 
267 	try_call_object(handler_name, t);
268 
269 	Py_DECREF(t);
270 }
271 
define_event_symbols(struct tep_event * event,const char * ev_name,struct tep_print_arg * args)272 static void define_event_symbols(struct tep_event *event,
273 				 const char *ev_name,
274 				 struct tep_print_arg *args)
275 {
276 	if (args == NULL)
277 		return;
278 
279 	switch (args->type) {
280 	case TEP_PRINT_NULL:
281 		break;
282 	case TEP_PRINT_ATOM:
283 		define_value(TEP_PRINT_FLAGS, ev_name, cur_field_name, "0",
284 			     args->atom.atom);
285 		zero_flag_atom = 0;
286 		break;
287 	case TEP_PRINT_FIELD:
288 		free(cur_field_name);
289 		cur_field_name = strdup(args->field.name);
290 		break;
291 	case TEP_PRINT_FLAGS:
292 		define_event_symbols(event, ev_name, args->flags.field);
293 		define_field(TEP_PRINT_FLAGS, ev_name, cur_field_name,
294 			     args->flags.delim);
295 		define_values(TEP_PRINT_FLAGS, args->flags.flags, ev_name,
296 			      cur_field_name);
297 		break;
298 	case TEP_PRINT_SYMBOL:
299 		define_event_symbols(event, ev_name, args->symbol.field);
300 		define_field(TEP_PRINT_SYMBOL, ev_name, cur_field_name, NULL);
301 		define_values(TEP_PRINT_SYMBOL, args->symbol.symbols, ev_name,
302 			      cur_field_name);
303 		break;
304 	case TEP_PRINT_HEX:
305 	case TEP_PRINT_HEX_STR:
306 		define_event_symbols(event, ev_name, args->hex.field);
307 		define_event_symbols(event, ev_name, args->hex.size);
308 		break;
309 	case TEP_PRINT_INT_ARRAY:
310 		define_event_symbols(event, ev_name, args->int_array.field);
311 		define_event_symbols(event, ev_name, args->int_array.count);
312 		define_event_symbols(event, ev_name, args->int_array.el_size);
313 		break;
314 	case TEP_PRINT_STRING:
315 		break;
316 	case TEP_PRINT_TYPE:
317 		define_event_symbols(event, ev_name, args->typecast.item);
318 		break;
319 	case TEP_PRINT_OP:
320 		if (strcmp(args->op.op, ":") == 0)
321 			zero_flag_atom = 1;
322 		define_event_symbols(event, ev_name, args->op.left);
323 		define_event_symbols(event, ev_name, args->op.right);
324 		break;
325 	default:
326 		/* gcc warns for these? */
327 	case TEP_PRINT_BSTRING:
328 	case TEP_PRINT_DYNAMIC_ARRAY:
329 	case TEP_PRINT_DYNAMIC_ARRAY_LEN:
330 	case TEP_PRINT_FUNC:
331 	case TEP_PRINT_BITMASK:
332 		/* we should warn... */
333 		return;
334 	}
335 
336 	if (args->next)
337 		define_event_symbols(event, ev_name, args->next);
338 }
339 
get_field_numeric_entry(struct tep_event * event,struct tep_format_field * field,void * data)340 static PyObject *get_field_numeric_entry(struct tep_event *event,
341 		struct tep_format_field *field, void *data)
342 {
343 	bool is_array = field->flags & TEP_FIELD_IS_ARRAY;
344 	PyObject *obj = NULL, *list = NULL;
345 	unsigned long long val;
346 	unsigned int item_size, n_items, i;
347 
348 	if (is_array) {
349 		list = PyList_New(field->arraylen);
350 		item_size = field->size / field->arraylen;
351 		n_items = field->arraylen;
352 	} else {
353 		item_size = field->size;
354 		n_items = 1;
355 	}
356 
357 	for (i = 0; i < n_items; i++) {
358 
359 		val = read_size(event, data + field->offset + i * item_size,
360 				item_size);
361 		if (field->flags & TEP_FIELD_IS_SIGNED) {
362 			if ((long long)val >= LONG_MIN &&
363 					(long long)val <= LONG_MAX)
364 				obj = _PyLong_FromLong(val);
365 			else
366 				obj = PyLong_FromLongLong(val);
367 		} else {
368 			if (val <= LONG_MAX)
369 				obj = _PyLong_FromLong(val);
370 			else
371 				obj = PyLong_FromUnsignedLongLong(val);
372 		}
373 		if (is_array)
374 			PyList_SET_ITEM(list, i, obj);
375 	}
376 	if (is_array)
377 		obj = list;
378 	return obj;
379 }
380 
get_dsoname(struct map * map)381 static const char *get_dsoname(struct map *map)
382 {
383 	const char *dsoname = "[unknown]";
384 
385 	if (map && map->dso) {
386 		if (symbol_conf.show_kernel_path && map->dso->long_name)
387 			dsoname = map->dso->long_name;
388 		else
389 			dsoname = map->dso->name;
390 	}
391 
392 	return dsoname;
393 }
394 
get_offset(struct symbol * sym,struct addr_location * al)395 static unsigned long get_offset(struct symbol *sym, struct addr_location *al)
396 {
397 	unsigned long offset;
398 
399 	if (al->addr < sym->end)
400 		offset = al->addr - sym->start;
401 	else
402 		offset = al->addr - al->map->start - sym->start;
403 
404 	return offset;
405 }
406 
python_process_callchain(struct perf_sample * sample,struct evsel * evsel,struct addr_location * al)407 static PyObject *python_process_callchain(struct perf_sample *sample,
408 					 struct evsel *evsel,
409 					 struct addr_location *al)
410 {
411 	PyObject *pylist;
412 
413 	pylist = PyList_New(0);
414 	if (!pylist)
415 		Py_FatalError("couldn't create Python list");
416 
417 	if (!symbol_conf.use_callchain || !sample->callchain)
418 		goto exit;
419 
420 	if (thread__resolve_callchain(al->thread, &callchain_cursor, evsel,
421 				      sample, NULL, NULL,
422 				      scripting_max_stack) != 0) {
423 		pr_err("Failed to resolve callchain. Skipping\n");
424 		goto exit;
425 	}
426 	callchain_cursor_commit(&callchain_cursor);
427 
428 
429 	while (1) {
430 		PyObject *pyelem;
431 		struct callchain_cursor_node *node;
432 		node = callchain_cursor_current(&callchain_cursor);
433 		if (!node)
434 			break;
435 
436 		pyelem = PyDict_New();
437 		if (!pyelem)
438 			Py_FatalError("couldn't create Python dictionary");
439 
440 
441 		pydict_set_item_string_decref(pyelem, "ip",
442 				PyLong_FromUnsignedLongLong(node->ip));
443 
444 		if (node->ms.sym) {
445 			PyObject *pysym  = PyDict_New();
446 			if (!pysym)
447 				Py_FatalError("couldn't create Python dictionary");
448 			pydict_set_item_string_decref(pysym, "start",
449 					PyLong_FromUnsignedLongLong(node->ms.sym->start));
450 			pydict_set_item_string_decref(pysym, "end",
451 					PyLong_FromUnsignedLongLong(node->ms.sym->end));
452 			pydict_set_item_string_decref(pysym, "binding",
453 					_PyLong_FromLong(node->ms.sym->binding));
454 			pydict_set_item_string_decref(pysym, "name",
455 					_PyUnicode_FromStringAndSize(node->ms.sym->name,
456 							node->ms.sym->namelen));
457 			pydict_set_item_string_decref(pyelem, "sym", pysym);
458 
459 			if (node->ms.map) {
460 				struct map *map = node->ms.map;
461 				struct addr_location node_al;
462 				unsigned long offset;
463 
464 				node_al.addr = map->map_ip(map, node->ip);
465 				node_al.map  = map;
466 				offset = get_offset(node->ms.sym, &node_al);
467 
468 				pydict_set_item_string_decref(
469 					pyelem, "sym_off",
470 					PyLong_FromUnsignedLongLong(offset));
471 			}
472 			if (node->srcline && strcmp(":0", node->srcline)) {
473 				pydict_set_item_string_decref(
474 					pyelem, "sym_srcline",
475 					_PyUnicode_FromString(node->srcline));
476 			}
477 		}
478 
479 		if (node->ms.map) {
480 			const char *dsoname = get_dsoname(node->ms.map);
481 
482 			pydict_set_item_string_decref(pyelem, "dso",
483 					_PyUnicode_FromString(dsoname));
484 		}
485 
486 		callchain_cursor_advance(&callchain_cursor);
487 		PyList_Append(pylist, pyelem);
488 		Py_DECREF(pyelem);
489 	}
490 
491 exit:
492 	return pylist;
493 }
494 
python_process_brstack(struct perf_sample * sample,struct thread * thread)495 static PyObject *python_process_brstack(struct perf_sample *sample,
496 					struct thread *thread)
497 {
498 	struct branch_stack *br = sample->branch_stack;
499 	struct branch_entry *entries = perf_sample__branch_entries(sample);
500 	PyObject *pylist;
501 	u64 i;
502 
503 	pylist = PyList_New(0);
504 	if (!pylist)
505 		Py_FatalError("couldn't create Python list");
506 
507 	if (!(br && br->nr))
508 		goto exit;
509 
510 	for (i = 0; i < br->nr; i++) {
511 		PyObject *pyelem;
512 		struct addr_location al;
513 		const char *dsoname;
514 
515 		pyelem = PyDict_New();
516 		if (!pyelem)
517 			Py_FatalError("couldn't create Python dictionary");
518 
519 		pydict_set_item_string_decref(pyelem, "from",
520 		    PyLong_FromUnsignedLongLong(entries[i].from));
521 		pydict_set_item_string_decref(pyelem, "to",
522 		    PyLong_FromUnsignedLongLong(entries[i].to));
523 		pydict_set_item_string_decref(pyelem, "mispred",
524 		    PyBool_FromLong(entries[i].flags.mispred));
525 		pydict_set_item_string_decref(pyelem, "predicted",
526 		    PyBool_FromLong(entries[i].flags.predicted));
527 		pydict_set_item_string_decref(pyelem, "in_tx",
528 		    PyBool_FromLong(entries[i].flags.in_tx));
529 		pydict_set_item_string_decref(pyelem, "abort",
530 		    PyBool_FromLong(entries[i].flags.abort));
531 		pydict_set_item_string_decref(pyelem, "cycles",
532 		    PyLong_FromUnsignedLongLong(entries[i].flags.cycles));
533 
534 		thread__find_map_fb(thread, sample->cpumode,
535 				    entries[i].from, &al);
536 		dsoname = get_dsoname(al.map);
537 		pydict_set_item_string_decref(pyelem, "from_dsoname",
538 					      _PyUnicode_FromString(dsoname));
539 
540 		thread__find_map_fb(thread, sample->cpumode,
541 				    entries[i].to, &al);
542 		dsoname = get_dsoname(al.map);
543 		pydict_set_item_string_decref(pyelem, "to_dsoname",
544 					      _PyUnicode_FromString(dsoname));
545 
546 		PyList_Append(pylist, pyelem);
547 		Py_DECREF(pyelem);
548 	}
549 
550 exit:
551 	return pylist;
552 }
553 
get_symoff(struct symbol * sym,struct addr_location * al,bool print_off,char * bf,int size)554 static int get_symoff(struct symbol *sym, struct addr_location *al,
555 		      bool print_off, char *bf, int size)
556 {
557 	unsigned long offset;
558 
559 	if (!sym || !sym->name[0])
560 		return scnprintf(bf, size, "%s", "[unknown]");
561 
562 	if (!print_off)
563 		return scnprintf(bf, size, "%s", sym->name);
564 
565 	offset = get_offset(sym, al);
566 
567 	return scnprintf(bf, size, "%s+0x%x", sym->name, offset);
568 }
569 
get_br_mspred(struct branch_flags * flags,char * bf,int size)570 static int get_br_mspred(struct branch_flags *flags, char *bf, int size)
571 {
572 	if (!flags->mispred  && !flags->predicted)
573 		return scnprintf(bf, size, "%s", "-");
574 
575 	if (flags->mispred)
576 		return scnprintf(bf, size, "%s", "M");
577 
578 	return scnprintf(bf, size, "%s", "P");
579 }
580 
python_process_brstacksym(struct perf_sample * sample,struct thread * thread)581 static PyObject *python_process_brstacksym(struct perf_sample *sample,
582 					   struct thread *thread)
583 {
584 	struct branch_stack *br = sample->branch_stack;
585 	struct branch_entry *entries = perf_sample__branch_entries(sample);
586 	PyObject *pylist;
587 	u64 i;
588 	char bf[512];
589 	struct addr_location al;
590 
591 	pylist = PyList_New(0);
592 	if (!pylist)
593 		Py_FatalError("couldn't create Python list");
594 
595 	if (!(br && br->nr))
596 		goto exit;
597 
598 	for (i = 0; i < br->nr; i++) {
599 		PyObject *pyelem;
600 
601 		pyelem = PyDict_New();
602 		if (!pyelem)
603 			Py_FatalError("couldn't create Python dictionary");
604 
605 		thread__find_symbol_fb(thread, sample->cpumode,
606 				       entries[i].from, &al);
607 		get_symoff(al.sym, &al, true, bf, sizeof(bf));
608 		pydict_set_item_string_decref(pyelem, "from",
609 					      _PyUnicode_FromString(bf));
610 
611 		thread__find_symbol_fb(thread, sample->cpumode,
612 				       entries[i].to, &al);
613 		get_symoff(al.sym, &al, true, bf, sizeof(bf));
614 		pydict_set_item_string_decref(pyelem, "to",
615 					      _PyUnicode_FromString(bf));
616 
617 		get_br_mspred(&entries[i].flags, bf, sizeof(bf));
618 		pydict_set_item_string_decref(pyelem, "pred",
619 					      _PyUnicode_FromString(bf));
620 
621 		if (entries[i].flags.in_tx) {
622 			pydict_set_item_string_decref(pyelem, "in_tx",
623 					      _PyUnicode_FromString("X"));
624 		} else {
625 			pydict_set_item_string_decref(pyelem, "in_tx",
626 					      _PyUnicode_FromString("-"));
627 		}
628 
629 		if (entries[i].flags.abort) {
630 			pydict_set_item_string_decref(pyelem, "abort",
631 					      _PyUnicode_FromString("A"));
632 		} else {
633 			pydict_set_item_string_decref(pyelem, "abort",
634 					      _PyUnicode_FromString("-"));
635 		}
636 
637 		PyList_Append(pylist, pyelem);
638 		Py_DECREF(pyelem);
639 	}
640 
641 exit:
642 	return pylist;
643 }
644 
get_sample_value_as_tuple(struct sample_read_value * value,u64 read_format)645 static PyObject *get_sample_value_as_tuple(struct sample_read_value *value,
646 					   u64 read_format)
647 {
648 	PyObject *t;
649 
650 	t = PyTuple_New(3);
651 	if (!t)
652 		Py_FatalError("couldn't create Python tuple");
653 	PyTuple_SetItem(t, 0, PyLong_FromUnsignedLongLong(value->id));
654 	PyTuple_SetItem(t, 1, PyLong_FromUnsignedLongLong(value->value));
655 	if (read_format & PERF_FORMAT_LOST)
656 		PyTuple_SetItem(t, 2, PyLong_FromUnsignedLongLong(value->lost));
657 
658 	return t;
659 }
660 
set_sample_read_in_dict(PyObject * dict_sample,struct perf_sample * sample,struct evsel * evsel)661 static void set_sample_read_in_dict(PyObject *dict_sample,
662 					 struct perf_sample *sample,
663 					 struct evsel *evsel)
664 {
665 	u64 read_format = evsel->core.attr.read_format;
666 	PyObject *values;
667 	unsigned int i;
668 
669 	if (read_format & PERF_FORMAT_TOTAL_TIME_ENABLED) {
670 		pydict_set_item_string_decref(dict_sample, "time_enabled",
671 			PyLong_FromUnsignedLongLong(sample->read.time_enabled));
672 	}
673 
674 	if (read_format & PERF_FORMAT_TOTAL_TIME_RUNNING) {
675 		pydict_set_item_string_decref(dict_sample, "time_running",
676 			PyLong_FromUnsignedLongLong(sample->read.time_running));
677 	}
678 
679 	if (read_format & PERF_FORMAT_GROUP)
680 		values = PyList_New(sample->read.group.nr);
681 	else
682 		values = PyList_New(1);
683 
684 	if (!values)
685 		Py_FatalError("couldn't create Python list");
686 
687 	if (read_format & PERF_FORMAT_GROUP) {
688 		struct sample_read_value *v = sample->read.group.values;
689 
690 		i = 0;
691 		sample_read_group__for_each(v, sample->read.group.nr, read_format) {
692 			PyObject *t = get_sample_value_as_tuple(v, read_format);
693 			PyList_SET_ITEM(values, i, t);
694 			i++;
695 		}
696 	} else {
697 		PyObject *t = get_sample_value_as_tuple(&sample->read.one,
698 							read_format);
699 		PyList_SET_ITEM(values, 0, t);
700 	}
701 	pydict_set_item_string_decref(dict_sample, "values", values);
702 }
703 
set_sample_datasrc_in_dict(PyObject * dict,struct perf_sample * sample)704 static void set_sample_datasrc_in_dict(PyObject *dict,
705 				       struct perf_sample *sample)
706 {
707 	struct mem_info mi = { .data_src.val = sample->data_src };
708 	char decode[100];
709 
710 	pydict_set_item_string_decref(dict, "datasrc",
711 			PyLong_FromUnsignedLongLong(sample->data_src));
712 
713 	perf_script__meminfo_scnprintf(decode, 100, &mi);
714 
715 	pydict_set_item_string_decref(dict, "datasrc_decode",
716 			_PyUnicode_FromString(decode));
717 }
718 
regs_map(struct regs_dump * regs,uint64_t mask,const char * arch,char * bf,int size)719 static void regs_map(struct regs_dump *regs, uint64_t mask, const char *arch, char *bf, int size)
720 {
721 	unsigned int i = 0, r;
722 	int printed = 0;
723 
724 	bf[0] = 0;
725 
726 	if (!regs || !regs->regs)
727 		return;
728 
729 	for_each_set_bit(r, (unsigned long *) &mask, sizeof(mask) * 8) {
730 		u64 val = regs->regs[i++];
731 
732 		printed += scnprintf(bf + printed, size - printed,
733 				     "%5s:0x%" PRIx64 " ",
734 				     perf_reg_name(r, arch), val);
735 	}
736 }
737 
set_regs_in_dict(PyObject * dict,struct perf_sample * sample,struct evsel * evsel)738 static void set_regs_in_dict(PyObject *dict,
739 			     struct perf_sample *sample,
740 			     struct evsel *evsel)
741 {
742 	struct perf_event_attr *attr = &evsel->core.attr;
743 	const char *arch = perf_env__arch(evsel__env(evsel));
744 
745 	/*
746 	 * Here value 28 is a constant size which can be used to print
747 	 * one register value and its corresponds to:
748 	 * 16 chars is to specify 64 bit register in hexadecimal.
749 	 * 2 chars is for appending "0x" to the hexadecimal value and
750 	 * 10 chars is for register name.
751 	 */
752 	int size = __sw_hweight64(attr->sample_regs_intr) * 28;
753 	char bf[size];
754 
755 	regs_map(&sample->intr_regs, attr->sample_regs_intr, arch, bf, sizeof(bf));
756 
757 	pydict_set_item_string_decref(dict, "iregs",
758 			_PyUnicode_FromString(bf));
759 
760 	regs_map(&sample->user_regs, attr->sample_regs_user, arch, bf, sizeof(bf));
761 
762 	pydict_set_item_string_decref(dict, "uregs",
763 			_PyUnicode_FromString(bf));
764 }
765 
set_sym_in_dict(PyObject * dict,struct addr_location * al,const char * dso_field,const char * dso_bid_field,const char * dso_map_start,const char * dso_map_end,const char * sym_field,const char * symoff_field)766 static void set_sym_in_dict(PyObject *dict, struct addr_location *al,
767 			    const char *dso_field, const char *dso_bid_field,
768 			    const char *dso_map_start, const char *dso_map_end,
769 			    const char *sym_field, const char *symoff_field)
770 {
771 	char sbuild_id[SBUILD_ID_SIZE];
772 
773 	if (al->map) {
774 		pydict_set_item_string_decref(dict, dso_field,
775 			_PyUnicode_FromString(al->map->dso->name));
776 		build_id__sprintf(&al->map->dso->bid, sbuild_id);
777 		pydict_set_item_string_decref(dict, dso_bid_field,
778 			_PyUnicode_FromString(sbuild_id));
779 		pydict_set_item_string_decref(dict, dso_map_start,
780 			PyLong_FromUnsignedLong(al->map->start));
781 		pydict_set_item_string_decref(dict, dso_map_end,
782 			PyLong_FromUnsignedLong(al->map->end));
783 	}
784 	if (al->sym) {
785 		pydict_set_item_string_decref(dict, sym_field,
786 			_PyUnicode_FromString(al->sym->name));
787 		pydict_set_item_string_decref(dict, symoff_field,
788 			PyLong_FromUnsignedLong(get_offset(al->sym, al)));
789 	}
790 }
791 
set_sample_flags(PyObject * dict,u32 flags)792 static void set_sample_flags(PyObject *dict, u32 flags)
793 {
794 	const char *ch = PERF_IP_FLAG_CHARS;
795 	char *p, str[33];
796 
797 	for (p = str; *ch; ch++, flags >>= 1) {
798 		if (flags & 1)
799 			*p++ = *ch;
800 	}
801 	*p = 0;
802 	pydict_set_item_string_decref(dict, "flags", _PyUnicode_FromString(str));
803 }
804 
python_process_sample_flags(struct perf_sample * sample,PyObject * dict_sample)805 static void python_process_sample_flags(struct perf_sample *sample, PyObject *dict_sample)
806 {
807 	char flags_disp[SAMPLE_FLAGS_BUF_SIZE];
808 
809 	set_sample_flags(dict_sample, sample->flags);
810 	perf_sample__sprintf_flags(sample->flags, flags_disp, sizeof(flags_disp));
811 	pydict_set_item_string_decref(dict_sample, "flags_disp",
812 		_PyUnicode_FromString(flags_disp));
813 }
814 
get_perf_sample_dict(struct perf_sample * sample,struct evsel * evsel,struct addr_location * al,struct addr_location * addr_al,PyObject * callchain)815 static PyObject *get_perf_sample_dict(struct perf_sample *sample,
816 					 struct evsel *evsel,
817 					 struct addr_location *al,
818 					 struct addr_location *addr_al,
819 					 PyObject *callchain)
820 {
821 	PyObject *dict, *dict_sample, *brstack, *brstacksym;
822 
823 	dict = PyDict_New();
824 	if (!dict)
825 		Py_FatalError("couldn't create Python dictionary");
826 
827 	dict_sample = PyDict_New();
828 	if (!dict_sample)
829 		Py_FatalError("couldn't create Python dictionary");
830 
831 	pydict_set_item_string_decref(dict, "ev_name", _PyUnicode_FromString(evsel__name(evsel)));
832 	pydict_set_item_string_decref(dict, "attr", _PyBytes_FromStringAndSize((const char *)&evsel->core.attr, sizeof(evsel->core.attr)));
833 
834 	pydict_set_item_string_decref(dict_sample, "pid",
835 			_PyLong_FromLong(sample->pid));
836 	pydict_set_item_string_decref(dict_sample, "tid",
837 			_PyLong_FromLong(sample->tid));
838 	pydict_set_item_string_decref(dict_sample, "cpu",
839 			_PyLong_FromLong(sample->cpu));
840 	pydict_set_item_string_decref(dict_sample, "ip",
841 			PyLong_FromUnsignedLongLong(sample->ip));
842 	pydict_set_item_string_decref(dict_sample, "time",
843 			PyLong_FromUnsignedLongLong(sample->time));
844 	pydict_set_item_string_decref(dict_sample, "period",
845 			PyLong_FromUnsignedLongLong(sample->period));
846 	pydict_set_item_string_decref(dict_sample, "phys_addr",
847 			PyLong_FromUnsignedLongLong(sample->phys_addr));
848 	pydict_set_item_string_decref(dict_sample, "addr",
849 			PyLong_FromUnsignedLongLong(sample->addr));
850 	set_sample_read_in_dict(dict_sample, sample, evsel);
851 	pydict_set_item_string_decref(dict_sample, "weight",
852 			PyLong_FromUnsignedLongLong(sample->weight));
853 	pydict_set_item_string_decref(dict_sample, "transaction",
854 			PyLong_FromUnsignedLongLong(sample->transaction));
855 	set_sample_datasrc_in_dict(dict_sample, sample);
856 	pydict_set_item_string_decref(dict, "sample", dict_sample);
857 
858 	pydict_set_item_string_decref(dict, "raw_buf", _PyBytes_FromStringAndSize(
859 			(const char *)sample->raw_data, sample->raw_size));
860 	pydict_set_item_string_decref(dict, "comm",
861 			_PyUnicode_FromString(thread__comm_str(al->thread)));
862 	set_sym_in_dict(dict, al, "dso", "dso_bid", "dso_map_start", "dso_map_end",
863 			"symbol", "symoff");
864 
865 	pydict_set_item_string_decref(dict, "callchain", callchain);
866 
867 	brstack = python_process_brstack(sample, al->thread);
868 	pydict_set_item_string_decref(dict, "brstack", brstack);
869 
870 	brstacksym = python_process_brstacksym(sample, al->thread);
871 	pydict_set_item_string_decref(dict, "brstacksym", brstacksym);
872 
873 	if (sample->machine_pid) {
874 		pydict_set_item_string_decref(dict_sample, "machine_pid",
875 				_PyLong_FromLong(sample->machine_pid));
876 		pydict_set_item_string_decref(dict_sample, "vcpu",
877 				_PyLong_FromLong(sample->vcpu));
878 	}
879 
880 	pydict_set_item_string_decref(dict_sample, "cpumode",
881 			_PyLong_FromLong((unsigned long)sample->cpumode));
882 
883 	if (addr_al) {
884 		pydict_set_item_string_decref(dict_sample, "addr_correlates_sym",
885 			PyBool_FromLong(1));
886 		set_sym_in_dict(dict_sample, addr_al, "addr_dso", "addr_dso_bid",
887 				"addr_dso_map_start", "addr_dso_map_end",
888 				"addr_symbol", "addr_symoff");
889 	}
890 
891 	if (sample->flags)
892 		python_process_sample_flags(sample, dict_sample);
893 
894 	/* Instructions per cycle (IPC) */
895 	if (sample->insn_cnt && sample->cyc_cnt) {
896 		pydict_set_item_string_decref(dict_sample, "insn_cnt",
897 			PyLong_FromUnsignedLongLong(sample->insn_cnt));
898 		pydict_set_item_string_decref(dict_sample, "cyc_cnt",
899 			PyLong_FromUnsignedLongLong(sample->cyc_cnt));
900 	}
901 
902 	set_regs_in_dict(dict, sample, evsel);
903 
904 	return dict;
905 }
906 
python_process_tracepoint(struct perf_sample * sample,struct evsel * evsel,struct addr_location * al,struct addr_location * addr_al)907 static void python_process_tracepoint(struct perf_sample *sample,
908 				      struct evsel *evsel,
909 				      struct addr_location *al,
910 				      struct addr_location *addr_al)
911 {
912 	struct tep_event *event = evsel->tp_format;
913 	PyObject *handler, *context, *t, *obj = NULL, *callchain;
914 	PyObject *dict = NULL, *all_entries_dict = NULL;
915 	static char handler_name[256];
916 	struct tep_format_field *field;
917 	unsigned long s, ns;
918 	unsigned n = 0;
919 	int pid;
920 	int cpu = sample->cpu;
921 	void *data = sample->raw_data;
922 	unsigned long long nsecs = sample->time;
923 	const char *comm = thread__comm_str(al->thread);
924 	const char *default_handler_name = "trace_unhandled";
925 
926 	if (!event) {
927 		snprintf(handler_name, sizeof(handler_name),
928 			 "ug! no event found for type %" PRIu64, (u64)evsel->core.attr.config);
929 		Py_FatalError(handler_name);
930 	}
931 
932 	pid = raw_field_value(event, "common_pid", data);
933 
934 	sprintf(handler_name, "%s__%s", event->system, event->name);
935 
936 	if (!test_and_set_bit(event->id, events_defined))
937 		define_event_symbols(event, handler_name, event->print_fmt.args);
938 
939 	handler = get_handler(handler_name);
940 	if (!handler) {
941 		handler = get_handler(default_handler_name);
942 		if (!handler)
943 			return;
944 		dict = PyDict_New();
945 		if (!dict)
946 			Py_FatalError("couldn't create Python dict");
947 	}
948 
949 	t = PyTuple_New(MAX_FIELDS);
950 	if (!t)
951 		Py_FatalError("couldn't create Python tuple");
952 
953 
954 	s = nsecs / NSEC_PER_SEC;
955 	ns = nsecs - s * NSEC_PER_SEC;
956 
957 	context = _PyCapsule_New(scripting_context, NULL, NULL);
958 
959 	PyTuple_SetItem(t, n++, _PyUnicode_FromString(handler_name));
960 	PyTuple_SetItem(t, n++, context);
961 
962 	/* ip unwinding */
963 	callchain = python_process_callchain(sample, evsel, al);
964 	/* Need an additional reference for the perf_sample dict */
965 	Py_INCREF(callchain);
966 
967 	if (!dict) {
968 		PyTuple_SetItem(t, n++, _PyLong_FromLong(cpu));
969 		PyTuple_SetItem(t, n++, _PyLong_FromLong(s));
970 		PyTuple_SetItem(t, n++, _PyLong_FromLong(ns));
971 		PyTuple_SetItem(t, n++, _PyLong_FromLong(pid));
972 		PyTuple_SetItem(t, n++, _PyUnicode_FromString(comm));
973 		PyTuple_SetItem(t, n++, callchain);
974 	} else {
975 		pydict_set_item_string_decref(dict, "common_cpu", _PyLong_FromLong(cpu));
976 		pydict_set_item_string_decref(dict, "common_s", _PyLong_FromLong(s));
977 		pydict_set_item_string_decref(dict, "common_ns", _PyLong_FromLong(ns));
978 		pydict_set_item_string_decref(dict, "common_pid", _PyLong_FromLong(pid));
979 		pydict_set_item_string_decref(dict, "common_comm", _PyUnicode_FromString(comm));
980 		pydict_set_item_string_decref(dict, "common_callchain", callchain);
981 	}
982 	for (field = event->format.fields; field; field = field->next) {
983 		unsigned int offset, len;
984 		unsigned long long val;
985 
986 		if (field->flags & TEP_FIELD_IS_ARRAY) {
987 			offset = field->offset;
988 			len    = field->size;
989 			if (field->flags & TEP_FIELD_IS_DYNAMIC) {
990 				val     = tep_read_number(scripting_context->pevent,
991 							  data + offset, len);
992 				offset  = val;
993 				len     = offset >> 16;
994 				offset &= 0xffff;
995 				if (field->flags & TEP_FIELD_IS_RELATIVE)
996 					offset += field->offset + field->size;
997 			}
998 			if (field->flags & TEP_FIELD_IS_STRING &&
999 			    is_printable_array(data + offset, len)) {
1000 				obj = _PyUnicode_FromString((char *) data + offset);
1001 			} else {
1002 				obj = PyByteArray_FromStringAndSize((const char *) data + offset, len);
1003 				field->flags &= ~TEP_FIELD_IS_STRING;
1004 			}
1005 		} else { /* FIELD_IS_NUMERIC */
1006 			obj = get_field_numeric_entry(event, field, data);
1007 		}
1008 		if (!dict)
1009 			PyTuple_SetItem(t, n++, obj);
1010 		else
1011 			pydict_set_item_string_decref(dict, field->name, obj);
1012 
1013 	}
1014 
1015 	if (dict)
1016 		PyTuple_SetItem(t, n++, dict);
1017 
1018 	if (get_argument_count(handler) == (int) n + 1) {
1019 		all_entries_dict = get_perf_sample_dict(sample, evsel, al, addr_al,
1020 			callchain);
1021 		PyTuple_SetItem(t, n++,	all_entries_dict);
1022 	} else {
1023 		Py_DECREF(callchain);
1024 	}
1025 
1026 	if (_PyTuple_Resize(&t, n) == -1)
1027 		Py_FatalError("error resizing Python tuple");
1028 
1029 	if (!dict)
1030 		call_object(handler, t, handler_name);
1031 	else
1032 		call_object(handler, t, default_handler_name);
1033 
1034 	Py_DECREF(t);
1035 }
1036 
tuple_new(unsigned int sz)1037 static PyObject *tuple_new(unsigned int sz)
1038 {
1039 	PyObject *t;
1040 
1041 	t = PyTuple_New(sz);
1042 	if (!t)
1043 		Py_FatalError("couldn't create Python tuple");
1044 	return t;
1045 }
1046 
tuple_set_s64(PyObject * t,unsigned int pos,s64 val)1047 static int tuple_set_s64(PyObject *t, unsigned int pos, s64 val)
1048 {
1049 #if BITS_PER_LONG == 64
1050 	return PyTuple_SetItem(t, pos, _PyLong_FromLong(val));
1051 #endif
1052 #if BITS_PER_LONG == 32
1053 	return PyTuple_SetItem(t, pos, PyLong_FromLongLong(val));
1054 #endif
1055 }
1056 
1057 /*
1058  * Databases support only signed 64-bit numbers, so even though we are
1059  * exporting a u64, it must be as s64.
1060  */
1061 #define tuple_set_d64 tuple_set_s64
1062 
tuple_set_u64(PyObject * t,unsigned int pos,u64 val)1063 static int tuple_set_u64(PyObject *t, unsigned int pos, u64 val)
1064 {
1065 #if BITS_PER_LONG == 64
1066 	return PyTuple_SetItem(t, pos, PyLong_FromUnsignedLong(val));
1067 #endif
1068 #if BITS_PER_LONG == 32
1069 	return PyTuple_SetItem(t, pos, PyLong_FromUnsignedLongLong(val));
1070 #endif
1071 }
1072 
tuple_set_u32(PyObject * t,unsigned int pos,u32 val)1073 static int tuple_set_u32(PyObject *t, unsigned int pos, u32 val)
1074 {
1075 	return PyTuple_SetItem(t, pos, PyLong_FromUnsignedLong(val));
1076 }
1077 
tuple_set_s32(PyObject * t,unsigned int pos,s32 val)1078 static int tuple_set_s32(PyObject *t, unsigned int pos, s32 val)
1079 {
1080 	return PyTuple_SetItem(t, pos, _PyLong_FromLong(val));
1081 }
1082 
tuple_set_bool(PyObject * t,unsigned int pos,bool val)1083 static int tuple_set_bool(PyObject *t, unsigned int pos, bool val)
1084 {
1085 	return PyTuple_SetItem(t, pos, PyBool_FromLong(val));
1086 }
1087 
tuple_set_string(PyObject * t,unsigned int pos,const char * s)1088 static int tuple_set_string(PyObject *t, unsigned int pos, const char *s)
1089 {
1090 	return PyTuple_SetItem(t, pos, _PyUnicode_FromString(s));
1091 }
1092 
tuple_set_bytes(PyObject * t,unsigned int pos,void * bytes,unsigned int sz)1093 static int tuple_set_bytes(PyObject *t, unsigned int pos, void *bytes,
1094 			   unsigned int sz)
1095 {
1096 	return PyTuple_SetItem(t, pos, _PyBytes_FromStringAndSize(bytes, sz));
1097 }
1098 
python_export_evsel(struct db_export * dbe,struct evsel * evsel)1099 static int python_export_evsel(struct db_export *dbe, struct evsel *evsel)
1100 {
1101 	struct tables *tables = container_of(dbe, struct tables, dbe);
1102 	PyObject *t;
1103 
1104 	t = tuple_new(2);
1105 
1106 	tuple_set_d64(t, 0, evsel->db_id);
1107 	tuple_set_string(t, 1, evsel__name(evsel));
1108 
1109 	call_object(tables->evsel_handler, t, "evsel_table");
1110 
1111 	Py_DECREF(t);
1112 
1113 	return 0;
1114 }
1115 
python_export_machine(struct db_export * dbe,struct machine * machine)1116 static int python_export_machine(struct db_export *dbe,
1117 				 struct machine *machine)
1118 {
1119 	struct tables *tables = container_of(dbe, struct tables, dbe);
1120 	PyObject *t;
1121 
1122 	t = tuple_new(3);
1123 
1124 	tuple_set_d64(t, 0, machine->db_id);
1125 	tuple_set_s32(t, 1, machine->pid);
1126 	tuple_set_string(t, 2, machine->root_dir ? machine->root_dir : "");
1127 
1128 	call_object(tables->machine_handler, t, "machine_table");
1129 
1130 	Py_DECREF(t);
1131 
1132 	return 0;
1133 }
1134 
python_export_thread(struct db_export * dbe,struct thread * thread,u64 main_thread_db_id,struct machine * machine)1135 static int python_export_thread(struct db_export *dbe, struct thread *thread,
1136 				u64 main_thread_db_id, struct machine *machine)
1137 {
1138 	struct tables *tables = container_of(dbe, struct tables, dbe);
1139 	PyObject *t;
1140 
1141 	t = tuple_new(5);
1142 
1143 	tuple_set_d64(t, 0, thread->db_id);
1144 	tuple_set_d64(t, 1, machine->db_id);
1145 	tuple_set_d64(t, 2, main_thread_db_id);
1146 	tuple_set_s32(t, 3, thread->pid_);
1147 	tuple_set_s32(t, 4, thread->tid);
1148 
1149 	call_object(tables->thread_handler, t, "thread_table");
1150 
1151 	Py_DECREF(t);
1152 
1153 	return 0;
1154 }
1155 
python_export_comm(struct db_export * dbe,struct comm * comm,struct thread * thread)1156 static int python_export_comm(struct db_export *dbe, struct comm *comm,
1157 			      struct thread *thread)
1158 {
1159 	struct tables *tables = container_of(dbe, struct tables, dbe);
1160 	PyObject *t;
1161 
1162 	t = tuple_new(5);
1163 
1164 	tuple_set_d64(t, 0, comm->db_id);
1165 	tuple_set_string(t, 1, comm__str(comm));
1166 	tuple_set_d64(t, 2, thread->db_id);
1167 	tuple_set_d64(t, 3, comm->start);
1168 	tuple_set_s32(t, 4, comm->exec);
1169 
1170 	call_object(tables->comm_handler, t, "comm_table");
1171 
1172 	Py_DECREF(t);
1173 
1174 	return 0;
1175 }
1176 
python_export_comm_thread(struct db_export * dbe,u64 db_id,struct comm * comm,struct thread * thread)1177 static int python_export_comm_thread(struct db_export *dbe, u64 db_id,
1178 				     struct comm *comm, struct thread *thread)
1179 {
1180 	struct tables *tables = container_of(dbe, struct tables, dbe);
1181 	PyObject *t;
1182 
1183 	t = tuple_new(3);
1184 
1185 	tuple_set_d64(t, 0, db_id);
1186 	tuple_set_d64(t, 1, comm->db_id);
1187 	tuple_set_d64(t, 2, thread->db_id);
1188 
1189 	call_object(tables->comm_thread_handler, t, "comm_thread_table");
1190 
1191 	Py_DECREF(t);
1192 
1193 	return 0;
1194 }
1195 
python_export_dso(struct db_export * dbe,struct dso * dso,struct machine * machine)1196 static int python_export_dso(struct db_export *dbe, struct dso *dso,
1197 			     struct machine *machine)
1198 {
1199 	struct tables *tables = container_of(dbe, struct tables, dbe);
1200 	char sbuild_id[SBUILD_ID_SIZE];
1201 	PyObject *t;
1202 
1203 	build_id__sprintf(&dso->bid, sbuild_id);
1204 
1205 	t = tuple_new(5);
1206 
1207 	tuple_set_d64(t, 0, dso->db_id);
1208 	tuple_set_d64(t, 1, machine->db_id);
1209 	tuple_set_string(t, 2, dso->short_name);
1210 	tuple_set_string(t, 3, dso->long_name);
1211 	tuple_set_string(t, 4, sbuild_id);
1212 
1213 	call_object(tables->dso_handler, t, "dso_table");
1214 
1215 	Py_DECREF(t);
1216 
1217 	return 0;
1218 }
1219 
python_export_symbol(struct db_export * dbe,struct symbol * sym,struct dso * dso)1220 static int python_export_symbol(struct db_export *dbe, struct symbol *sym,
1221 				struct dso *dso)
1222 {
1223 	struct tables *tables = container_of(dbe, struct tables, dbe);
1224 	u64 *sym_db_id = symbol__priv(sym);
1225 	PyObject *t;
1226 
1227 	t = tuple_new(6);
1228 
1229 	tuple_set_d64(t, 0, *sym_db_id);
1230 	tuple_set_d64(t, 1, dso->db_id);
1231 	tuple_set_d64(t, 2, sym->start);
1232 	tuple_set_d64(t, 3, sym->end);
1233 	tuple_set_s32(t, 4, sym->binding);
1234 	tuple_set_string(t, 5, sym->name);
1235 
1236 	call_object(tables->symbol_handler, t, "symbol_table");
1237 
1238 	Py_DECREF(t);
1239 
1240 	return 0;
1241 }
1242 
python_export_branch_type(struct db_export * dbe,u32 branch_type,const char * name)1243 static int python_export_branch_type(struct db_export *dbe, u32 branch_type,
1244 				     const char *name)
1245 {
1246 	struct tables *tables = container_of(dbe, struct tables, dbe);
1247 	PyObject *t;
1248 
1249 	t = tuple_new(2);
1250 
1251 	tuple_set_s32(t, 0, branch_type);
1252 	tuple_set_string(t, 1, name);
1253 
1254 	call_object(tables->branch_type_handler, t, "branch_type_table");
1255 
1256 	Py_DECREF(t);
1257 
1258 	return 0;
1259 }
1260 
python_export_sample_table(struct db_export * dbe,struct export_sample * es)1261 static void python_export_sample_table(struct db_export *dbe,
1262 				       struct export_sample *es)
1263 {
1264 	struct tables *tables = container_of(dbe, struct tables, dbe);
1265 	PyObject *t;
1266 
1267 	t = tuple_new(25);
1268 
1269 	tuple_set_d64(t, 0, es->db_id);
1270 	tuple_set_d64(t, 1, es->evsel->db_id);
1271 	tuple_set_d64(t, 2, es->al->maps->machine->db_id);
1272 	tuple_set_d64(t, 3, es->al->thread->db_id);
1273 	tuple_set_d64(t, 4, es->comm_db_id);
1274 	tuple_set_d64(t, 5, es->dso_db_id);
1275 	tuple_set_d64(t, 6, es->sym_db_id);
1276 	tuple_set_d64(t, 7, es->offset);
1277 	tuple_set_d64(t, 8, es->sample->ip);
1278 	tuple_set_d64(t, 9, es->sample->time);
1279 	tuple_set_s32(t, 10, es->sample->cpu);
1280 	tuple_set_d64(t, 11, es->addr_dso_db_id);
1281 	tuple_set_d64(t, 12, es->addr_sym_db_id);
1282 	tuple_set_d64(t, 13, es->addr_offset);
1283 	tuple_set_d64(t, 14, es->sample->addr);
1284 	tuple_set_d64(t, 15, es->sample->period);
1285 	tuple_set_d64(t, 16, es->sample->weight);
1286 	tuple_set_d64(t, 17, es->sample->transaction);
1287 	tuple_set_d64(t, 18, es->sample->data_src);
1288 	tuple_set_s32(t, 19, es->sample->flags & PERF_BRANCH_MASK);
1289 	tuple_set_s32(t, 20, !!(es->sample->flags & PERF_IP_FLAG_IN_TX));
1290 	tuple_set_d64(t, 21, es->call_path_id);
1291 	tuple_set_d64(t, 22, es->sample->insn_cnt);
1292 	tuple_set_d64(t, 23, es->sample->cyc_cnt);
1293 	tuple_set_s32(t, 24, es->sample->flags);
1294 
1295 	call_object(tables->sample_handler, t, "sample_table");
1296 
1297 	Py_DECREF(t);
1298 }
1299 
python_export_synth(struct db_export * dbe,struct export_sample * es)1300 static void python_export_synth(struct db_export *dbe, struct export_sample *es)
1301 {
1302 	struct tables *tables = container_of(dbe, struct tables, dbe);
1303 	PyObject *t;
1304 
1305 	t = tuple_new(3);
1306 
1307 	tuple_set_d64(t, 0, es->db_id);
1308 	tuple_set_d64(t, 1, es->evsel->core.attr.config);
1309 	tuple_set_bytes(t, 2, es->sample->raw_data, es->sample->raw_size);
1310 
1311 	call_object(tables->synth_handler, t, "synth_data");
1312 
1313 	Py_DECREF(t);
1314 }
1315 
python_export_sample(struct db_export * dbe,struct export_sample * es)1316 static int python_export_sample(struct db_export *dbe,
1317 				struct export_sample *es)
1318 {
1319 	struct tables *tables = container_of(dbe, struct tables, dbe);
1320 
1321 	python_export_sample_table(dbe, es);
1322 
1323 	if (es->evsel->core.attr.type == PERF_TYPE_SYNTH && tables->synth_handler)
1324 		python_export_synth(dbe, es);
1325 
1326 	return 0;
1327 }
1328 
python_export_call_path(struct db_export * dbe,struct call_path * cp)1329 static int python_export_call_path(struct db_export *dbe, struct call_path *cp)
1330 {
1331 	struct tables *tables = container_of(dbe, struct tables, dbe);
1332 	PyObject *t;
1333 	u64 parent_db_id, sym_db_id;
1334 
1335 	parent_db_id = cp->parent ? cp->parent->db_id : 0;
1336 	sym_db_id = cp->sym ? *(u64 *)symbol__priv(cp->sym) : 0;
1337 
1338 	t = tuple_new(4);
1339 
1340 	tuple_set_d64(t, 0, cp->db_id);
1341 	tuple_set_d64(t, 1, parent_db_id);
1342 	tuple_set_d64(t, 2, sym_db_id);
1343 	tuple_set_d64(t, 3, cp->ip);
1344 
1345 	call_object(tables->call_path_handler, t, "call_path_table");
1346 
1347 	Py_DECREF(t);
1348 
1349 	return 0;
1350 }
1351 
python_export_call_return(struct db_export * dbe,struct call_return * cr)1352 static int python_export_call_return(struct db_export *dbe,
1353 				     struct call_return *cr)
1354 {
1355 	struct tables *tables = container_of(dbe, struct tables, dbe);
1356 	u64 comm_db_id = cr->comm ? cr->comm->db_id : 0;
1357 	PyObject *t;
1358 
1359 	t = tuple_new(14);
1360 
1361 	tuple_set_d64(t, 0, cr->db_id);
1362 	tuple_set_d64(t, 1, cr->thread->db_id);
1363 	tuple_set_d64(t, 2, comm_db_id);
1364 	tuple_set_d64(t, 3, cr->cp->db_id);
1365 	tuple_set_d64(t, 4, cr->call_time);
1366 	tuple_set_d64(t, 5, cr->return_time);
1367 	tuple_set_d64(t, 6, cr->branch_count);
1368 	tuple_set_d64(t, 7, cr->call_ref);
1369 	tuple_set_d64(t, 8, cr->return_ref);
1370 	tuple_set_d64(t, 9, cr->cp->parent->db_id);
1371 	tuple_set_s32(t, 10, cr->flags);
1372 	tuple_set_d64(t, 11, cr->parent_db_id);
1373 	tuple_set_d64(t, 12, cr->insn_count);
1374 	tuple_set_d64(t, 13, cr->cyc_count);
1375 
1376 	call_object(tables->call_return_handler, t, "call_return_table");
1377 
1378 	Py_DECREF(t);
1379 
1380 	return 0;
1381 }
1382 
python_export_context_switch(struct db_export * dbe,u64 db_id,struct machine * machine,struct perf_sample * sample,u64 th_out_id,u64 comm_out_id,u64 th_in_id,u64 comm_in_id,int flags)1383 static int python_export_context_switch(struct db_export *dbe, u64 db_id,
1384 					struct machine *machine,
1385 					struct perf_sample *sample,
1386 					u64 th_out_id, u64 comm_out_id,
1387 					u64 th_in_id, u64 comm_in_id, int flags)
1388 {
1389 	struct tables *tables = container_of(dbe, struct tables, dbe);
1390 	PyObject *t;
1391 
1392 	t = tuple_new(9);
1393 
1394 	tuple_set_d64(t, 0, db_id);
1395 	tuple_set_d64(t, 1, machine->db_id);
1396 	tuple_set_d64(t, 2, sample->time);
1397 	tuple_set_s32(t, 3, sample->cpu);
1398 	tuple_set_d64(t, 4, th_out_id);
1399 	tuple_set_d64(t, 5, comm_out_id);
1400 	tuple_set_d64(t, 6, th_in_id);
1401 	tuple_set_d64(t, 7, comm_in_id);
1402 	tuple_set_s32(t, 8, flags);
1403 
1404 	call_object(tables->context_switch_handler, t, "context_switch");
1405 
1406 	Py_DECREF(t);
1407 
1408 	return 0;
1409 }
1410 
python_process_call_return(struct call_return * cr,u64 * parent_db_id,void * data)1411 static int python_process_call_return(struct call_return *cr, u64 *parent_db_id,
1412 				      void *data)
1413 {
1414 	struct db_export *dbe = data;
1415 
1416 	return db_export__call_return(dbe, cr, parent_db_id);
1417 }
1418 
python_process_general_event(struct perf_sample * sample,struct evsel * evsel,struct addr_location * al,struct addr_location * addr_al)1419 static void python_process_general_event(struct perf_sample *sample,
1420 					 struct evsel *evsel,
1421 					 struct addr_location *al,
1422 					 struct addr_location *addr_al)
1423 {
1424 	PyObject *handler, *t, *dict, *callchain;
1425 	static char handler_name[64];
1426 	unsigned n = 0;
1427 
1428 	snprintf(handler_name, sizeof(handler_name), "%s", "process_event");
1429 
1430 	handler = get_handler(handler_name);
1431 	if (!handler)
1432 		return;
1433 
1434 	/*
1435 	 * Use the MAX_FIELDS to make the function expandable, though
1436 	 * currently there is only one item for the tuple.
1437 	 */
1438 	t = PyTuple_New(MAX_FIELDS);
1439 	if (!t)
1440 		Py_FatalError("couldn't create Python tuple");
1441 
1442 	/* ip unwinding */
1443 	callchain = python_process_callchain(sample, evsel, al);
1444 	dict = get_perf_sample_dict(sample, evsel, al, addr_al, callchain);
1445 
1446 	PyTuple_SetItem(t, n++, dict);
1447 	if (_PyTuple_Resize(&t, n) == -1)
1448 		Py_FatalError("error resizing Python tuple");
1449 
1450 	call_object(handler, t, handler_name);
1451 
1452 	Py_DECREF(t);
1453 }
1454 
python_process_event(union perf_event * event,struct perf_sample * sample,struct evsel * evsel,struct addr_location * al,struct addr_location * addr_al)1455 static void python_process_event(union perf_event *event,
1456 				 struct perf_sample *sample,
1457 				 struct evsel *evsel,
1458 				 struct addr_location *al,
1459 				 struct addr_location *addr_al)
1460 {
1461 	struct tables *tables = &tables_global;
1462 
1463 	scripting_context__update(scripting_context, event, sample, evsel, al, addr_al);
1464 
1465 	switch (evsel->core.attr.type) {
1466 	case PERF_TYPE_TRACEPOINT:
1467 		python_process_tracepoint(sample, evsel, al, addr_al);
1468 		break;
1469 	/* Reserve for future process_hw/sw/raw APIs */
1470 	default:
1471 		if (tables->db_export_mode)
1472 			db_export__sample(&tables->dbe, event, sample, evsel, al, addr_al);
1473 		else
1474 			python_process_general_event(sample, evsel, al, addr_al);
1475 	}
1476 }
1477 
python_process_throttle(union perf_event * event,struct perf_sample * sample,struct machine * machine)1478 static void python_process_throttle(union perf_event *event,
1479 				    struct perf_sample *sample,
1480 				    struct machine *machine)
1481 {
1482 	const char *handler_name;
1483 	PyObject *handler, *t;
1484 
1485 	if (event->header.type == PERF_RECORD_THROTTLE)
1486 		handler_name = "throttle";
1487 	else
1488 		handler_name = "unthrottle";
1489 	handler = get_handler(handler_name);
1490 	if (!handler)
1491 		return;
1492 
1493 	t = tuple_new(6);
1494 	if (!t)
1495 		return;
1496 
1497 	tuple_set_u64(t, 0, event->throttle.time);
1498 	tuple_set_u64(t, 1, event->throttle.id);
1499 	tuple_set_u64(t, 2, event->throttle.stream_id);
1500 	tuple_set_s32(t, 3, sample->cpu);
1501 	tuple_set_s32(t, 4, sample->pid);
1502 	tuple_set_s32(t, 5, sample->tid);
1503 
1504 	call_object(handler, t, handler_name);
1505 
1506 	Py_DECREF(t);
1507 }
1508 
python_do_process_switch(union perf_event * event,struct perf_sample * sample,struct machine * machine)1509 static void python_do_process_switch(union perf_event *event,
1510 				     struct perf_sample *sample,
1511 				     struct machine *machine)
1512 {
1513 	const char *handler_name = "context_switch";
1514 	bool out = event->header.misc & PERF_RECORD_MISC_SWITCH_OUT;
1515 	bool out_preempt = out && (event->header.misc & PERF_RECORD_MISC_SWITCH_OUT_PREEMPT);
1516 	pid_t np_pid = -1, np_tid = -1;
1517 	PyObject *handler, *t;
1518 
1519 	handler = get_handler(handler_name);
1520 	if (!handler)
1521 		return;
1522 
1523 	if (event->header.type == PERF_RECORD_SWITCH_CPU_WIDE) {
1524 		np_pid = event->context_switch.next_prev_pid;
1525 		np_tid = event->context_switch.next_prev_tid;
1526 	}
1527 
1528 	t = tuple_new(11);
1529 	if (!t)
1530 		return;
1531 
1532 	tuple_set_u64(t, 0, sample->time);
1533 	tuple_set_s32(t, 1, sample->cpu);
1534 	tuple_set_s32(t, 2, sample->pid);
1535 	tuple_set_s32(t, 3, sample->tid);
1536 	tuple_set_s32(t, 4, np_pid);
1537 	tuple_set_s32(t, 5, np_tid);
1538 	tuple_set_s32(t, 6, machine->pid);
1539 	tuple_set_bool(t, 7, out);
1540 	tuple_set_bool(t, 8, out_preempt);
1541 	tuple_set_s32(t, 9, sample->machine_pid);
1542 	tuple_set_s32(t, 10, sample->vcpu);
1543 
1544 	call_object(handler, t, handler_name);
1545 
1546 	Py_DECREF(t);
1547 }
1548 
python_process_switch(union perf_event * event,struct perf_sample * sample,struct machine * machine)1549 static void python_process_switch(union perf_event *event,
1550 				  struct perf_sample *sample,
1551 				  struct machine *machine)
1552 {
1553 	struct tables *tables = &tables_global;
1554 
1555 	if (tables->db_export_mode)
1556 		db_export__switch(&tables->dbe, event, sample, machine);
1557 	else
1558 		python_do_process_switch(event, sample, machine);
1559 }
1560 
python_process_auxtrace_error(struct perf_session * session __maybe_unused,union perf_event * event)1561 static void python_process_auxtrace_error(struct perf_session *session __maybe_unused,
1562 					  union perf_event *event)
1563 {
1564 	struct perf_record_auxtrace_error *e = &event->auxtrace_error;
1565 	u8 cpumode = e->header.misc & PERF_RECORD_MISC_CPUMODE_MASK;
1566 	const char *handler_name = "auxtrace_error";
1567 	unsigned long long tm = e->time;
1568 	const char *msg = e->msg;
1569 	PyObject *handler, *t;
1570 
1571 	handler = get_handler(handler_name);
1572 	if (!handler)
1573 		return;
1574 
1575 	if (!e->fmt) {
1576 		tm = 0;
1577 		msg = (const char *)&e->time;
1578 	}
1579 
1580 	t = tuple_new(11);
1581 
1582 	tuple_set_u32(t, 0, e->type);
1583 	tuple_set_u32(t, 1, e->code);
1584 	tuple_set_s32(t, 2, e->cpu);
1585 	tuple_set_s32(t, 3, e->pid);
1586 	tuple_set_s32(t, 4, e->tid);
1587 	tuple_set_u64(t, 5, e->ip);
1588 	tuple_set_u64(t, 6, tm);
1589 	tuple_set_string(t, 7, msg);
1590 	tuple_set_u32(t, 8, cpumode);
1591 	tuple_set_s32(t, 9, e->machine_pid);
1592 	tuple_set_s32(t, 10, e->vcpu);
1593 
1594 	call_object(handler, t, handler_name);
1595 
1596 	Py_DECREF(t);
1597 }
1598 
get_handler_name(char * str,size_t size,struct evsel * evsel)1599 static void get_handler_name(char *str, size_t size,
1600 			     struct evsel *evsel)
1601 {
1602 	char *p = str;
1603 
1604 	scnprintf(str, size, "stat__%s", evsel__name(evsel));
1605 
1606 	while ((p = strchr(p, ':'))) {
1607 		*p = '_';
1608 		p++;
1609 	}
1610 }
1611 
1612 static void
process_stat(struct evsel * counter,struct perf_cpu cpu,int thread,u64 tstamp,struct perf_counts_values * count)1613 process_stat(struct evsel *counter, struct perf_cpu cpu, int thread, u64 tstamp,
1614 	     struct perf_counts_values *count)
1615 {
1616 	PyObject *handler, *t;
1617 	static char handler_name[256];
1618 	int n = 0;
1619 
1620 	t = PyTuple_New(MAX_FIELDS);
1621 	if (!t)
1622 		Py_FatalError("couldn't create Python tuple");
1623 
1624 	get_handler_name(handler_name, sizeof(handler_name),
1625 			 counter);
1626 
1627 	handler = get_handler(handler_name);
1628 	if (!handler) {
1629 		pr_debug("can't find python handler %s\n", handler_name);
1630 		return;
1631 	}
1632 
1633 	PyTuple_SetItem(t, n++, _PyLong_FromLong(cpu.cpu));
1634 	PyTuple_SetItem(t, n++, _PyLong_FromLong(thread));
1635 
1636 	tuple_set_u64(t, n++, tstamp);
1637 	tuple_set_u64(t, n++, count->val);
1638 	tuple_set_u64(t, n++, count->ena);
1639 	tuple_set_u64(t, n++, count->run);
1640 
1641 	if (_PyTuple_Resize(&t, n) == -1)
1642 		Py_FatalError("error resizing Python tuple");
1643 
1644 	call_object(handler, t, handler_name);
1645 
1646 	Py_DECREF(t);
1647 }
1648 
python_process_stat(struct perf_stat_config * config,struct evsel * counter,u64 tstamp)1649 static void python_process_stat(struct perf_stat_config *config,
1650 				struct evsel *counter, u64 tstamp)
1651 {
1652 	struct perf_thread_map *threads = counter->core.threads;
1653 	struct perf_cpu_map *cpus = counter->core.cpus;
1654 	int cpu, thread;
1655 
1656 	if (config->aggr_mode == AGGR_GLOBAL) {
1657 		process_stat(counter, (struct perf_cpu){ .cpu = -1 }, -1, tstamp,
1658 			     &counter->counts->aggr);
1659 		return;
1660 	}
1661 
1662 	for (thread = 0; thread < threads->nr; thread++) {
1663 		for (cpu = 0; cpu < perf_cpu_map__nr(cpus); cpu++) {
1664 			process_stat(counter, perf_cpu_map__cpu(cpus, cpu),
1665 				     perf_thread_map__pid(threads, thread), tstamp,
1666 				     perf_counts(counter->counts, cpu, thread));
1667 		}
1668 	}
1669 }
1670 
python_process_stat_interval(u64 tstamp)1671 static void python_process_stat_interval(u64 tstamp)
1672 {
1673 	PyObject *handler, *t;
1674 	static const char handler_name[] = "stat__interval";
1675 	int n = 0;
1676 
1677 	t = PyTuple_New(MAX_FIELDS);
1678 	if (!t)
1679 		Py_FatalError("couldn't create Python tuple");
1680 
1681 	handler = get_handler(handler_name);
1682 	if (!handler) {
1683 		pr_debug("can't find python handler %s\n", handler_name);
1684 		return;
1685 	}
1686 
1687 	tuple_set_u64(t, n++, tstamp);
1688 
1689 	if (_PyTuple_Resize(&t, n) == -1)
1690 		Py_FatalError("error resizing Python tuple");
1691 
1692 	call_object(handler, t, handler_name);
1693 
1694 	Py_DECREF(t);
1695 }
1696 
perf_script_context_init(void)1697 static int perf_script_context_init(void)
1698 {
1699 	PyObject *perf_script_context;
1700 	PyObject *perf_trace_context;
1701 	PyObject *dict;
1702 	int ret;
1703 
1704 	perf_trace_context = PyImport_AddModule("perf_trace_context");
1705 	if (!perf_trace_context)
1706 		return -1;
1707 	dict = PyModule_GetDict(perf_trace_context);
1708 	if (!dict)
1709 		return -1;
1710 
1711 	perf_script_context = _PyCapsule_New(scripting_context, NULL, NULL);
1712 	if (!perf_script_context)
1713 		return -1;
1714 
1715 	ret = PyDict_SetItemString(dict, "perf_script_context", perf_script_context);
1716 	if (!ret)
1717 		ret = PyDict_SetItemString(main_dict, "perf_script_context", perf_script_context);
1718 	Py_DECREF(perf_script_context);
1719 	return ret;
1720 }
1721 
run_start_sub(void)1722 static int run_start_sub(void)
1723 {
1724 	main_module = PyImport_AddModule("__main__");
1725 	if (main_module == NULL)
1726 		return -1;
1727 	Py_INCREF(main_module);
1728 
1729 	main_dict = PyModule_GetDict(main_module);
1730 	if (main_dict == NULL)
1731 		goto error;
1732 	Py_INCREF(main_dict);
1733 
1734 	if (perf_script_context_init())
1735 		goto error;
1736 
1737 	try_call_object("trace_begin", NULL);
1738 
1739 	return 0;
1740 
1741 error:
1742 	Py_XDECREF(main_dict);
1743 	Py_XDECREF(main_module);
1744 	return -1;
1745 }
1746 
1747 #define SET_TABLE_HANDLER_(name, handler_name, table_name) do {		\
1748 	tables->handler_name = get_handler(#table_name);		\
1749 	if (tables->handler_name)					\
1750 		tables->dbe.export_ ## name = python_export_ ## name;	\
1751 } while (0)
1752 
1753 #define SET_TABLE_HANDLER(name) \
1754 	SET_TABLE_HANDLER_(name, name ## _handler, name ## _table)
1755 
set_table_handlers(struct tables * tables)1756 static void set_table_handlers(struct tables *tables)
1757 {
1758 	const char *perf_db_export_mode = "perf_db_export_mode";
1759 	const char *perf_db_export_calls = "perf_db_export_calls";
1760 	const char *perf_db_export_callchains = "perf_db_export_callchains";
1761 	PyObject *db_export_mode, *db_export_calls, *db_export_callchains;
1762 	bool export_calls = false;
1763 	bool export_callchains = false;
1764 	int ret;
1765 
1766 	memset(tables, 0, sizeof(struct tables));
1767 	if (db_export__init(&tables->dbe))
1768 		Py_FatalError("failed to initialize export");
1769 
1770 	db_export_mode = PyDict_GetItemString(main_dict, perf_db_export_mode);
1771 	if (!db_export_mode)
1772 		return;
1773 
1774 	ret = PyObject_IsTrue(db_export_mode);
1775 	if (ret == -1)
1776 		handler_call_die(perf_db_export_mode);
1777 	if (!ret)
1778 		return;
1779 
1780 	/* handle export calls */
1781 	tables->dbe.crp = NULL;
1782 	db_export_calls = PyDict_GetItemString(main_dict, perf_db_export_calls);
1783 	if (db_export_calls) {
1784 		ret = PyObject_IsTrue(db_export_calls);
1785 		if (ret == -1)
1786 			handler_call_die(perf_db_export_calls);
1787 		export_calls = !!ret;
1788 	}
1789 
1790 	if (export_calls) {
1791 		tables->dbe.crp =
1792 			call_return_processor__new(python_process_call_return,
1793 						   &tables->dbe);
1794 		if (!tables->dbe.crp)
1795 			Py_FatalError("failed to create calls processor");
1796 	}
1797 
1798 	/* handle export callchains */
1799 	tables->dbe.cpr = NULL;
1800 	db_export_callchains = PyDict_GetItemString(main_dict,
1801 						    perf_db_export_callchains);
1802 	if (db_export_callchains) {
1803 		ret = PyObject_IsTrue(db_export_callchains);
1804 		if (ret == -1)
1805 			handler_call_die(perf_db_export_callchains);
1806 		export_callchains = !!ret;
1807 	}
1808 
1809 	if (export_callchains) {
1810 		/*
1811 		 * Attempt to use the call path root from the call return
1812 		 * processor, if the call return processor is in use. Otherwise,
1813 		 * we allocate a new call path root. This prevents exporting
1814 		 * duplicate call path ids when both are in use simultaneously.
1815 		 */
1816 		if (tables->dbe.crp)
1817 			tables->dbe.cpr = tables->dbe.crp->cpr;
1818 		else
1819 			tables->dbe.cpr = call_path_root__new();
1820 
1821 		if (!tables->dbe.cpr)
1822 			Py_FatalError("failed to create call path root");
1823 	}
1824 
1825 	tables->db_export_mode = true;
1826 	/*
1827 	 * Reserve per symbol space for symbol->db_id via symbol__priv()
1828 	 */
1829 	symbol_conf.priv_size = sizeof(u64);
1830 
1831 	SET_TABLE_HANDLER(evsel);
1832 	SET_TABLE_HANDLER(machine);
1833 	SET_TABLE_HANDLER(thread);
1834 	SET_TABLE_HANDLER(comm);
1835 	SET_TABLE_HANDLER(comm_thread);
1836 	SET_TABLE_HANDLER(dso);
1837 	SET_TABLE_HANDLER(symbol);
1838 	SET_TABLE_HANDLER(branch_type);
1839 	SET_TABLE_HANDLER(sample);
1840 	SET_TABLE_HANDLER(call_path);
1841 	SET_TABLE_HANDLER(call_return);
1842 	SET_TABLE_HANDLER(context_switch);
1843 
1844 	/*
1845 	 * Synthesized events are samples but with architecture-specific data
1846 	 * stored in sample->raw_data. They are exported via
1847 	 * python_export_sample() and consequently do not need a separate export
1848 	 * callback.
1849 	 */
1850 	tables->synth_handler = get_handler("synth_data");
1851 }
1852 
1853 #if PY_MAJOR_VERSION < 3
_free_command_line(const char ** command_line,int num)1854 static void _free_command_line(const char **command_line, int num)
1855 {
1856 	free(command_line);
1857 }
1858 #else
_free_command_line(wchar_t ** command_line,int num)1859 static void _free_command_line(wchar_t **command_line, int num)
1860 {
1861 	int i;
1862 	for (i = 0; i < num; i++)
1863 		PyMem_RawFree(command_line[i]);
1864 	free(command_line);
1865 }
1866 #endif
1867 
1868 
1869 /*
1870  * Start trace script
1871  */
python_start_script(const char * script,int argc,const char ** argv,struct perf_session * session)1872 static int python_start_script(const char *script, int argc, const char **argv,
1873 			       struct perf_session *session)
1874 {
1875 	struct tables *tables = &tables_global;
1876 #if PY_MAJOR_VERSION < 3
1877 	const char **command_line;
1878 #else
1879 	wchar_t **command_line;
1880 #endif
1881 	/*
1882 	 * Use a non-const name variable to cope with python 2.6's
1883 	 * PyImport_AppendInittab prototype
1884 	 */
1885 	char buf[PATH_MAX], name[19] = "perf_trace_context";
1886 	int i, err = 0;
1887 	FILE *fp;
1888 
1889 	scripting_context->session = session;
1890 #if PY_MAJOR_VERSION < 3
1891 	command_line = malloc((argc + 1) * sizeof(const char *));
1892 	command_line[0] = script;
1893 	for (i = 1; i < argc + 1; i++)
1894 		command_line[i] = argv[i - 1];
1895 	PyImport_AppendInittab(name, initperf_trace_context);
1896 #else
1897 	command_line = malloc((argc + 1) * sizeof(wchar_t *));
1898 	command_line[0] = Py_DecodeLocale(script, NULL);
1899 	for (i = 1; i < argc + 1; i++)
1900 		command_line[i] = Py_DecodeLocale(argv[i - 1], NULL);
1901 	PyImport_AppendInittab(name, PyInit_perf_trace_context);
1902 #endif
1903 	Py_Initialize();
1904 
1905 #if PY_MAJOR_VERSION < 3
1906 	PySys_SetArgv(argc + 1, (char **)command_line);
1907 #else
1908 	PySys_SetArgv(argc + 1, command_line);
1909 #endif
1910 
1911 	fp = fopen(script, "r");
1912 	if (!fp) {
1913 		sprintf(buf, "Can't open python script \"%s\"", script);
1914 		perror(buf);
1915 		err = -1;
1916 		goto error;
1917 	}
1918 
1919 	err = PyRun_SimpleFile(fp, script);
1920 	if (err) {
1921 		fprintf(stderr, "Error running python script %s\n", script);
1922 		goto error;
1923 	}
1924 
1925 	err = run_start_sub();
1926 	if (err) {
1927 		fprintf(stderr, "Error starting python script %s\n", script);
1928 		goto error;
1929 	}
1930 
1931 	set_table_handlers(tables);
1932 
1933 	if (tables->db_export_mode) {
1934 		err = db_export__branch_types(&tables->dbe);
1935 		if (err)
1936 			goto error;
1937 	}
1938 
1939 	_free_command_line(command_line, argc + 1);
1940 
1941 	return err;
1942 error:
1943 	Py_Finalize();
1944 	_free_command_line(command_line, argc + 1);
1945 
1946 	return err;
1947 }
1948 
python_flush_script(void)1949 static int python_flush_script(void)
1950 {
1951 	return 0;
1952 }
1953 
1954 /*
1955  * Stop trace script
1956  */
python_stop_script(void)1957 static int python_stop_script(void)
1958 {
1959 	struct tables *tables = &tables_global;
1960 
1961 	try_call_object("trace_end", NULL);
1962 
1963 	db_export__exit(&tables->dbe);
1964 
1965 	Py_XDECREF(main_dict);
1966 	Py_XDECREF(main_module);
1967 	Py_Finalize();
1968 
1969 	return 0;
1970 }
1971 
python_generate_script(struct tep_handle * pevent,const char * outfile)1972 static int python_generate_script(struct tep_handle *pevent, const char *outfile)
1973 {
1974 	int i, not_first, count, nr_events;
1975 	struct tep_event **all_events;
1976 	struct tep_event *event = NULL;
1977 	struct tep_format_field *f;
1978 	char fname[PATH_MAX];
1979 	FILE *ofp;
1980 
1981 	sprintf(fname, "%s.py", outfile);
1982 	ofp = fopen(fname, "w");
1983 	if (ofp == NULL) {
1984 		fprintf(stderr, "couldn't open %s\n", fname);
1985 		return -1;
1986 	}
1987 	fprintf(ofp, "# perf script event handlers, "
1988 		"generated by perf script -g python\n");
1989 
1990 	fprintf(ofp, "# Licensed under the terms of the GNU GPL"
1991 		" License version 2\n\n");
1992 
1993 	fprintf(ofp, "# The common_* event handler fields are the most useful "
1994 		"fields common to\n");
1995 
1996 	fprintf(ofp, "# all events.  They don't necessarily correspond to "
1997 		"the 'common_*' fields\n");
1998 
1999 	fprintf(ofp, "# in the format files.  Those fields not available as "
2000 		"handler params can\n");
2001 
2002 	fprintf(ofp, "# be retrieved using Python functions of the form "
2003 		"common_*(context).\n");
2004 
2005 	fprintf(ofp, "# See the perf-script-python Documentation for the list "
2006 		"of available functions.\n\n");
2007 
2008 	fprintf(ofp, "from __future__ import print_function\n\n");
2009 	fprintf(ofp, "import os\n");
2010 	fprintf(ofp, "import sys\n\n");
2011 
2012 	fprintf(ofp, "sys.path.append(os.environ['PERF_EXEC_PATH'] + \\\n");
2013 	fprintf(ofp, "\t'/scripts/python/Perf-Trace-Util/lib/Perf/Trace')\n");
2014 	fprintf(ofp, "\nfrom perf_trace_context import *\n");
2015 	fprintf(ofp, "from Core import *\n\n\n");
2016 
2017 	fprintf(ofp, "def trace_begin():\n");
2018 	fprintf(ofp, "\tprint(\"in trace_begin\")\n\n");
2019 
2020 	fprintf(ofp, "def trace_end():\n");
2021 	fprintf(ofp, "\tprint(\"in trace_end\")\n\n");
2022 
2023 	nr_events = tep_get_events_count(pevent);
2024 	all_events = tep_list_events(pevent, TEP_EVENT_SORT_ID);
2025 
2026 	for (i = 0; all_events && i < nr_events; i++) {
2027 		event = all_events[i];
2028 		fprintf(ofp, "def %s__%s(", event->system, event->name);
2029 		fprintf(ofp, "event_name, ");
2030 		fprintf(ofp, "context, ");
2031 		fprintf(ofp, "common_cpu,\n");
2032 		fprintf(ofp, "\tcommon_secs, ");
2033 		fprintf(ofp, "common_nsecs, ");
2034 		fprintf(ofp, "common_pid, ");
2035 		fprintf(ofp, "common_comm,\n\t");
2036 		fprintf(ofp, "common_callchain, ");
2037 
2038 		not_first = 0;
2039 		count = 0;
2040 
2041 		for (f = event->format.fields; f; f = f->next) {
2042 			if (not_first++)
2043 				fprintf(ofp, ", ");
2044 			if (++count % 5 == 0)
2045 				fprintf(ofp, "\n\t");
2046 
2047 			fprintf(ofp, "%s", f->name);
2048 		}
2049 		if (not_first++)
2050 			fprintf(ofp, ", ");
2051 		if (++count % 5 == 0)
2052 			fprintf(ofp, "\n\t\t");
2053 		fprintf(ofp, "perf_sample_dict");
2054 
2055 		fprintf(ofp, "):\n");
2056 
2057 		fprintf(ofp, "\t\tprint_header(event_name, common_cpu, "
2058 			"common_secs, common_nsecs,\n\t\t\t"
2059 			"common_pid, common_comm)\n\n");
2060 
2061 		fprintf(ofp, "\t\tprint(\"");
2062 
2063 		not_first = 0;
2064 		count = 0;
2065 
2066 		for (f = event->format.fields; f; f = f->next) {
2067 			if (not_first++)
2068 				fprintf(ofp, ", ");
2069 			if (count && count % 3 == 0) {
2070 				fprintf(ofp, "\" \\\n\t\t\"");
2071 			}
2072 			count++;
2073 
2074 			fprintf(ofp, "%s=", f->name);
2075 			if (f->flags & TEP_FIELD_IS_STRING ||
2076 			    f->flags & TEP_FIELD_IS_FLAG ||
2077 			    f->flags & TEP_FIELD_IS_ARRAY ||
2078 			    f->flags & TEP_FIELD_IS_SYMBOLIC)
2079 				fprintf(ofp, "%%s");
2080 			else if (f->flags & TEP_FIELD_IS_SIGNED)
2081 				fprintf(ofp, "%%d");
2082 			else
2083 				fprintf(ofp, "%%u");
2084 		}
2085 
2086 		fprintf(ofp, "\" %% \\\n\t\t(");
2087 
2088 		not_first = 0;
2089 		count = 0;
2090 
2091 		for (f = event->format.fields; f; f = f->next) {
2092 			if (not_first++)
2093 				fprintf(ofp, ", ");
2094 
2095 			if (++count % 5 == 0)
2096 				fprintf(ofp, "\n\t\t");
2097 
2098 			if (f->flags & TEP_FIELD_IS_FLAG) {
2099 				if ((count - 1) % 5 != 0) {
2100 					fprintf(ofp, "\n\t\t");
2101 					count = 4;
2102 				}
2103 				fprintf(ofp, "flag_str(\"");
2104 				fprintf(ofp, "%s__%s\", ", event->system,
2105 					event->name);
2106 				fprintf(ofp, "\"%s\", %s)", f->name,
2107 					f->name);
2108 			} else if (f->flags & TEP_FIELD_IS_SYMBOLIC) {
2109 				if ((count - 1) % 5 != 0) {
2110 					fprintf(ofp, "\n\t\t");
2111 					count = 4;
2112 				}
2113 				fprintf(ofp, "symbol_str(\"");
2114 				fprintf(ofp, "%s__%s\", ", event->system,
2115 					event->name);
2116 				fprintf(ofp, "\"%s\", %s)", f->name,
2117 					f->name);
2118 			} else
2119 				fprintf(ofp, "%s", f->name);
2120 		}
2121 
2122 		fprintf(ofp, "))\n\n");
2123 
2124 		fprintf(ofp, "\t\tprint('Sample: {'+"
2125 			"get_dict_as_string(perf_sample_dict['sample'], ', ')+'}')\n\n");
2126 
2127 		fprintf(ofp, "\t\tfor node in common_callchain:");
2128 		fprintf(ofp, "\n\t\t\tif 'sym' in node:");
2129 		fprintf(ofp, "\n\t\t\t\tprint(\"\t[%%x] %%s%%s%%s%%s\" %% (");
2130 		fprintf(ofp, "\n\t\t\t\t\tnode['ip'], node['sym']['name'],");
2131 		fprintf(ofp, "\n\t\t\t\t\t\"+0x{:x}\".format(node['sym_off']) if 'sym_off' in node else \"\",");
2132 		fprintf(ofp, "\n\t\t\t\t\t\" ({})\".format(node['dso'])  if 'dso' in node else \"\",");
2133 		fprintf(ofp, "\n\t\t\t\t\t\" \" + node['sym_srcline'] if 'sym_srcline' in node else \"\"))");
2134 		fprintf(ofp, "\n\t\t\telse:");
2135 		fprintf(ofp, "\n\t\t\t\tprint(\"\t[%%x]\" %% (node['ip']))\n\n");
2136 		fprintf(ofp, "\t\tprint()\n\n");
2137 
2138 	}
2139 
2140 	fprintf(ofp, "def trace_unhandled(event_name, context, "
2141 		"event_fields_dict, perf_sample_dict):\n");
2142 
2143 	fprintf(ofp, "\t\tprint(get_dict_as_string(event_fields_dict))\n");
2144 	fprintf(ofp, "\t\tprint('Sample: {'+"
2145 		"get_dict_as_string(perf_sample_dict['sample'], ', ')+'}')\n\n");
2146 
2147 	fprintf(ofp, "def print_header("
2148 		"event_name, cpu, secs, nsecs, pid, comm):\n"
2149 		"\tprint(\"%%-20s %%5u %%05u.%%09u %%8u %%-20s \" %% \\\n\t"
2150 		"(event_name, cpu, secs, nsecs, pid, comm), end=\"\")\n\n");
2151 
2152 	fprintf(ofp, "def get_dict_as_string(a_dict, delimiter=' '):\n"
2153 		"\treturn delimiter.join"
2154 		"(['%%s=%%s'%%(k,str(v))for k,v in sorted(a_dict.items())])\n");
2155 
2156 	fclose(ofp);
2157 
2158 	fprintf(stderr, "generated Python script: %s\n", fname);
2159 
2160 	return 0;
2161 }
2162 
2163 struct scripting_ops python_scripting_ops = {
2164 	.name			= "Python",
2165 	.dirname		= "python",
2166 	.start_script		= python_start_script,
2167 	.flush_script		= python_flush_script,
2168 	.stop_script		= python_stop_script,
2169 	.process_event		= python_process_event,
2170 	.process_switch		= python_process_switch,
2171 	.process_auxtrace_error	= python_process_auxtrace_error,
2172 	.process_stat		= python_process_stat,
2173 	.process_stat_interval	= python_process_stat_interval,
2174 	.process_throttle	= python_process_throttle,
2175 	.generate_script	= python_generate_script,
2176 };
2177