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