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#ifdef HAVE_LIBTRACEEVENT
  34#include <traceevent/event-parse.h>
  35#endif
  36
  37#include "../build-id.h"
  38#include "../counts.h"
  39#include "../debug.h"
  40#include "../dso.h"
  41#include "../callchain.h"
  42#include "../env.h"
  43#include "../evsel.h"
  44#include "../event.h"
  45#include "../thread.h"
  46#include "../comm.h"
  47#include "../machine.h"
 
  48#include "../db-export.h"
  49#include "../thread-stack.h"
  50#include "../trace-event.h"
  51#include "../call-path.h"
  52#include "map.h"
  53#include "symbol.h"
  54#include "thread_map.h"
  55#include "print_binary.h"
  56#include "stat.h"
  57#include "mem-events.h"
  58#include "util/perf_regs.h"
  59
  60#if PY_MAJOR_VERSION < 3
  61#define _PyUnicode_FromString(arg) \
  62  PyString_FromString(arg)
  63#define _PyUnicode_FromStringAndSize(arg1, arg2) \
  64  PyString_FromStringAndSize((arg1), (arg2))
  65#define _PyBytes_FromStringAndSize(arg1, arg2) \
  66  PyString_FromStringAndSize((arg1), (arg2))
  67#define _PyLong_FromLong(arg) \
  68  PyInt_FromLong(arg)
  69#define _PyLong_AsLong(arg) \
  70  PyInt_AsLong(arg)
  71#define _PyCapsule_New(arg1, arg2, arg3) \
  72  PyCObject_FromVoidPtr((arg1), (arg2))
  73
  74PyMODINIT_FUNC initperf_trace_context(void);
  75#else
  76#define _PyUnicode_FromString(arg) \
  77  PyUnicode_FromString(arg)
  78#define _PyUnicode_FromStringAndSize(arg1, arg2) \
  79  PyUnicode_FromStringAndSize((arg1), (arg2))
  80#define _PyBytes_FromStringAndSize(arg1, arg2) \
  81  PyBytes_FromStringAndSize((arg1), (arg2))
  82#define _PyLong_FromLong(arg) \
  83  PyLong_FromLong(arg)
  84#define _PyLong_AsLong(arg) \
  85  PyLong_AsLong(arg)
  86#define _PyCapsule_New(arg1, arg2, arg3) \
  87  PyCapsule_New((arg1), (arg2), (arg3))
  88
  89PyMODINIT_FUNC PyInit_perf_trace_context(void);
  90#endif
  91
  92#ifdef HAVE_LIBTRACEEVENT
  93#define TRACE_EVENT_TYPE_MAX				\
  94	((1 << (sizeof(unsigned short) * 8)) - 1)
  95
  96#define N_COMMON_FIELDS	7
  97
  98static char *cur_field_name;
  99static int zero_flag_atom;
 100#endif
 101
 102#define MAX_FIELDS	64
 103
 104extern struct scripting_context *scripting_context;
 105
 106static PyObject *main_module, *main_dict;
 107
 108struct tables {
 109	struct db_export	dbe;
 110	PyObject		*evsel_handler;
 111	PyObject		*machine_handler;
 112	PyObject		*thread_handler;
 113	PyObject		*comm_handler;
 114	PyObject		*comm_thread_handler;
 115	PyObject		*dso_handler;
 116	PyObject		*symbol_handler;
 117	PyObject		*branch_type_handler;
 118	PyObject		*sample_handler;
 119	PyObject		*call_path_handler;
 120	PyObject		*call_return_handler;
 121	PyObject		*synth_handler;
 122	PyObject		*context_switch_handler;
 123	bool			db_export_mode;
 124};
 125
 126static struct tables tables_global;
 127
 128static void handler_call_die(const char *handler_name) __noreturn;
 129static void handler_call_die(const char *handler_name)
 130{
 131	PyErr_Print();
 132	Py_FatalError("problem in Python trace event handler");
 133	// Py_FatalError does not return
 134	// but we have to make the compiler happy
 135	abort();
 136}
 137
 138/*
 139 * Insert val into the dictionary and decrement the reference counter.
 140 * This is necessary for dictionaries since PyDict_SetItemString() does not
 141 * steal a reference, as opposed to PyTuple_SetItem().
 142 */
 143static void pydict_set_item_string_decref(PyObject *dict, const char *key, PyObject *val)
 144{
 145	PyDict_SetItemString(dict, key, val);
 146	Py_DECREF(val);
 147}
 148
 149static PyObject *get_handler(const char *handler_name)
 150{
 151	PyObject *handler;
 152
 153	handler = PyDict_GetItemString(main_dict, handler_name);
 154	if (handler && !PyCallable_Check(handler))
 155		return NULL;
 156	return handler;
 157}
 158
 159static void call_object(PyObject *handler, PyObject *args, const char *die_msg)
 160{
 161	PyObject *retval;
 162
 163	retval = PyObject_CallObject(handler, args);
 164	if (retval == NULL)
 165		handler_call_die(die_msg);
 166	Py_DECREF(retval);
 167}
 168
 169static void try_call_object(const char *handler_name, PyObject *args)
 170{
 171	PyObject *handler;
 172
 173	handler = get_handler(handler_name);
 174	if (handler)
 175		call_object(handler, args, handler_name);
 176}
 177
 178#ifdef HAVE_LIBTRACEEVENT
 179static int get_argument_count(PyObject *handler)
 180{
 181	int arg_count = 0;
 182
 183	/*
 184	 * The attribute for the code object is func_code in Python 2,
 185	 * whereas it is __code__ in Python 3.0+.
 186	 */
 187	PyObject *code_obj = PyObject_GetAttrString(handler,
 188		"func_code");
 189	if (PyErr_Occurred()) {
 190		PyErr_Clear();
 191		code_obj = PyObject_GetAttrString(handler,
 192			"__code__");
 193	}
 194	PyErr_Clear();
 195	if (code_obj) {
 196		PyObject *arg_count_obj = PyObject_GetAttrString(code_obj,
 197			"co_argcount");
 198		if (arg_count_obj) {
 199			arg_count = (int) _PyLong_AsLong(arg_count_obj);
 200			Py_DECREF(arg_count_obj);
 201		}
 202		Py_DECREF(code_obj);
 203	}
 204	return arg_count;
 205}
 206
 207static void define_value(enum tep_print_arg_type field_type,
 208			 const char *ev_name,
 209			 const char *field_name,
 210			 const char *field_value,
 211			 const char *field_str)
 212{
 213	const char *handler_name = "define_flag_value";
 214	PyObject *t;
 215	unsigned long long value;
 216	unsigned n = 0;
 217
 218	if (field_type == TEP_PRINT_SYMBOL)
 219		handler_name = "define_symbolic_value";
 220
 221	t = PyTuple_New(4);
 222	if (!t)
 223		Py_FatalError("couldn't create Python tuple");
 224
 225	value = eval_flag(field_value);
 226
 227	PyTuple_SetItem(t, n++, _PyUnicode_FromString(ev_name));
 228	PyTuple_SetItem(t, n++, _PyUnicode_FromString(field_name));
 229	PyTuple_SetItem(t, n++, _PyLong_FromLong(value));
 230	PyTuple_SetItem(t, n++, _PyUnicode_FromString(field_str));
 231
 232	try_call_object(handler_name, t);
 233
 234	Py_DECREF(t);
 235}
 236
 237static void define_values(enum tep_print_arg_type field_type,
 238			  struct tep_print_flag_sym *field,
 239			  const char *ev_name,
 240			  const char *field_name)
 241{
 242	define_value(field_type, ev_name, field_name, field->value,
 243		     field->str);
 244
 245	if (field->next)
 246		define_values(field_type, field->next, ev_name, field_name);
 247}
 248
 249static void define_field(enum tep_print_arg_type field_type,
 250			 const char *ev_name,
 251			 const char *field_name,
 252			 const char *delim)
 253{
 254	const char *handler_name = "define_flag_field";
 255	PyObject *t;
 256	unsigned n = 0;
 257
 258	if (field_type == TEP_PRINT_SYMBOL)
 259		handler_name = "define_symbolic_field";
 260
 261	if (field_type == TEP_PRINT_FLAGS)
 262		t = PyTuple_New(3);
 263	else
 264		t = PyTuple_New(2);
 265	if (!t)
 266		Py_FatalError("couldn't create Python tuple");
 267
 268	PyTuple_SetItem(t, n++, _PyUnicode_FromString(ev_name));
 269	PyTuple_SetItem(t, n++, _PyUnicode_FromString(field_name));
 270	if (field_type == TEP_PRINT_FLAGS)
 271		PyTuple_SetItem(t, n++, _PyUnicode_FromString(delim));
 272
 273	try_call_object(handler_name, t);
 274
 275	Py_DECREF(t);
 276}
 277
 278static void define_event_symbols(struct tep_event *event,
 279				 const char *ev_name,
 280				 struct tep_print_arg *args)
 281{
 282	if (args == NULL)
 283		return;
 284
 285	switch (args->type) {
 286	case TEP_PRINT_NULL:
 287		break;
 288	case TEP_PRINT_ATOM:
 289		define_value(TEP_PRINT_FLAGS, ev_name, cur_field_name, "0",
 290			     args->atom.atom);
 291		zero_flag_atom = 0;
 292		break;
 293	case TEP_PRINT_FIELD:
 294		free(cur_field_name);
 295		cur_field_name = strdup(args->field.name);
 296		break;
 297	case TEP_PRINT_FLAGS:
 298		define_event_symbols(event, ev_name, args->flags.field);
 299		define_field(TEP_PRINT_FLAGS, ev_name, cur_field_name,
 300			     args->flags.delim);
 301		define_values(TEP_PRINT_FLAGS, args->flags.flags, ev_name,
 302			      cur_field_name);
 303		break;
 304	case TEP_PRINT_SYMBOL:
 305		define_event_symbols(event, ev_name, args->symbol.field);
 306		define_field(TEP_PRINT_SYMBOL, ev_name, cur_field_name, NULL);
 307		define_values(TEP_PRINT_SYMBOL, args->symbol.symbols, ev_name,
 308			      cur_field_name);
 309		break;
 310	case TEP_PRINT_HEX:
 311	case TEP_PRINT_HEX_STR:
 312		define_event_symbols(event, ev_name, args->hex.field);
 313		define_event_symbols(event, ev_name, args->hex.size);
 314		break;
 315	case TEP_PRINT_INT_ARRAY:
 316		define_event_symbols(event, ev_name, args->int_array.field);
 317		define_event_symbols(event, ev_name, args->int_array.count);
 318		define_event_symbols(event, ev_name, args->int_array.el_size);
 319		break;
 320	case TEP_PRINT_STRING:
 321		break;
 322	case TEP_PRINT_TYPE:
 323		define_event_symbols(event, ev_name, args->typecast.item);
 324		break;
 325	case TEP_PRINT_OP:
 326		if (strcmp(args->op.op, ":") == 0)
 327			zero_flag_atom = 1;
 328		define_event_symbols(event, ev_name, args->op.left);
 329		define_event_symbols(event, ev_name, args->op.right);
 330		break;
 331	default:
 332		/* gcc warns for these? */
 333	case TEP_PRINT_BSTRING:
 334	case TEP_PRINT_DYNAMIC_ARRAY:
 335	case TEP_PRINT_DYNAMIC_ARRAY_LEN:
 336	case TEP_PRINT_FUNC:
 337	case TEP_PRINT_BITMASK:
 338		/* we should warn... */
 339		return;
 340	}
 341
 342	if (args->next)
 343		define_event_symbols(event, ev_name, args->next);
 344}
 345
 346static PyObject *get_field_numeric_entry(struct tep_event *event,
 347		struct tep_format_field *field, void *data)
 348{
 349	bool is_array = field->flags & TEP_FIELD_IS_ARRAY;
 350	PyObject *obj = NULL, *list = NULL;
 351	unsigned long long val;
 352	unsigned int item_size, n_items, i;
 353
 354	if (is_array) {
 355		list = PyList_New(field->arraylen);
 356		if (!list)
 357			Py_FatalError("couldn't create Python list");
 358		item_size = field->size / field->arraylen;
 359		n_items = field->arraylen;
 360	} else {
 361		item_size = field->size;
 362		n_items = 1;
 363	}
 364
 365	for (i = 0; i < n_items; i++) {
 366
 367		val = read_size(event, data + field->offset + i * item_size,
 368				item_size);
 369		if (field->flags & TEP_FIELD_IS_SIGNED) {
 370			if ((long long)val >= LONG_MIN &&
 371					(long long)val <= LONG_MAX)
 372				obj = _PyLong_FromLong(val);
 373			else
 374				obj = PyLong_FromLongLong(val);
 375		} else {
 376			if (val <= LONG_MAX)
 377				obj = _PyLong_FromLong(val);
 378			else
 379				obj = PyLong_FromUnsignedLongLong(val);
 380		}
 381		if (is_array)
 382			PyList_SET_ITEM(list, i, obj);
 383	}
 384	if (is_array)
 385		obj = list;
 386	return obj;
 387}
 388#endif
 389
 390static const char *get_dsoname(struct map *map)
 391{
 392	const char *dsoname = "[unknown]";
 393	struct dso *dso = map ? map__dso(map) : NULL;
 394
 395	if (dso) {
 396		if (symbol_conf.show_kernel_path && dso->long_name)
 397			dsoname = dso->long_name;
 398		else
 399			dsoname = dso->name;
 400	}
 401
 402	return dsoname;
 403}
 404
 405static unsigned long get_offset(struct symbol *sym, struct addr_location *al)
 406{
 407	unsigned long offset;
 408
 409	if (al->addr < sym->end)
 410		offset = al->addr - sym->start;
 411	else
 412		offset = al->addr - map__start(al->map) - sym->start;
 413
 414	return offset;
 415}
 416
 417static PyObject *python_process_callchain(struct perf_sample *sample,
 418					 struct evsel *evsel,
 419					 struct addr_location *al)
 420{
 421	PyObject *pylist;
 422	struct callchain_cursor *cursor;
 423
 424	pylist = PyList_New(0);
 425	if (!pylist)
 426		Py_FatalError("couldn't create Python list");
 427
 428	if (!symbol_conf.use_callchain || !sample->callchain)
 429		goto exit;
 430
 431	cursor = get_tls_callchain_cursor();
 432	if (thread__resolve_callchain(al->thread, cursor, evsel,
 433				      sample, NULL, NULL,
 434				      scripting_max_stack) != 0) {
 435		pr_err("Failed to resolve callchain. Skipping\n");
 436		goto exit;
 437	}
 438	callchain_cursor_commit(cursor);
 439
 440
 441	while (1) {
 442		PyObject *pyelem;
 443		struct callchain_cursor_node *node;
 444		node = callchain_cursor_current(cursor);
 445		if (!node)
 446			break;
 447
 448		pyelem = PyDict_New();
 449		if (!pyelem)
 450			Py_FatalError("couldn't create Python dictionary");
 451
 452
 453		pydict_set_item_string_decref(pyelem, "ip",
 454				PyLong_FromUnsignedLongLong(node->ip));
 455
 456		if (node->ms.sym) {
 457			PyObject *pysym  = PyDict_New();
 458			if (!pysym)
 459				Py_FatalError("couldn't create Python dictionary");
 460			pydict_set_item_string_decref(pysym, "start",
 461					PyLong_FromUnsignedLongLong(node->ms.sym->start));
 462			pydict_set_item_string_decref(pysym, "end",
 463					PyLong_FromUnsignedLongLong(node->ms.sym->end));
 464			pydict_set_item_string_decref(pysym, "binding",
 465					_PyLong_FromLong(node->ms.sym->binding));
 466			pydict_set_item_string_decref(pysym, "name",
 467					_PyUnicode_FromStringAndSize(node->ms.sym->name,
 468							node->ms.sym->namelen));
 469			pydict_set_item_string_decref(pyelem, "sym", pysym);
 470
 471			if (node->ms.map) {
 472				struct map *map = node->ms.map;
 473				struct addr_location node_al;
 474				unsigned long offset;
 475
 476				addr_location__init(&node_al);
 477				node_al.addr = map__map_ip(map, node->ip);
 478				node_al.map  = map__get(map);
 479				offset = get_offset(node->ms.sym, &node_al);
 480				addr_location__exit(&node_al);
 481
 482				pydict_set_item_string_decref(
 483					pyelem, "sym_off",
 484					PyLong_FromUnsignedLongLong(offset));
 485			}
 486			if (node->srcline && strcmp(":0", node->srcline)) {
 487				pydict_set_item_string_decref(
 488					pyelem, "sym_srcline",
 489					_PyUnicode_FromString(node->srcline));
 490			}
 491		}
 492
 493		if (node->ms.map) {
 494			const char *dsoname = get_dsoname(node->ms.map);
 495
 496			pydict_set_item_string_decref(pyelem, "dso",
 497					_PyUnicode_FromString(dsoname));
 498		}
 499
 500		callchain_cursor_advance(cursor);
 501		PyList_Append(pylist, pyelem);
 502		Py_DECREF(pyelem);
 503	}
 504
 505exit:
 506	return pylist;
 507}
 508
 509static PyObject *python_process_brstack(struct perf_sample *sample,
 510					struct thread *thread)
 511{
 512	struct branch_stack *br = sample->branch_stack;
 513	struct branch_entry *entries = perf_sample__branch_entries(sample);
 514	PyObject *pylist;
 515	u64 i;
 516
 517	pylist = PyList_New(0);
 518	if (!pylist)
 519		Py_FatalError("couldn't create Python list");
 520
 521	if (!(br && br->nr))
 522		goto exit;
 523
 524	for (i = 0; i < br->nr; i++) {
 525		PyObject *pyelem;
 526		struct addr_location al;
 527		const char *dsoname;
 528
 529		pyelem = PyDict_New();
 530		if (!pyelem)
 531			Py_FatalError("couldn't create Python dictionary");
 532
 533		pydict_set_item_string_decref(pyelem, "from",
 534		    PyLong_FromUnsignedLongLong(entries[i].from));
 535		pydict_set_item_string_decref(pyelem, "to",
 536		    PyLong_FromUnsignedLongLong(entries[i].to));
 537		pydict_set_item_string_decref(pyelem, "mispred",
 538		    PyBool_FromLong(entries[i].flags.mispred));
 539		pydict_set_item_string_decref(pyelem, "predicted",
 540		    PyBool_FromLong(entries[i].flags.predicted));
 541		pydict_set_item_string_decref(pyelem, "in_tx",
 542		    PyBool_FromLong(entries[i].flags.in_tx));
 543		pydict_set_item_string_decref(pyelem, "abort",
 544		    PyBool_FromLong(entries[i].flags.abort));
 545		pydict_set_item_string_decref(pyelem, "cycles",
 546		    PyLong_FromUnsignedLongLong(entries[i].flags.cycles));
 547
 548		addr_location__init(&al);
 549		thread__find_map_fb(thread, sample->cpumode,
 550				    entries[i].from, &al);
 551		dsoname = get_dsoname(al.map);
 552		pydict_set_item_string_decref(pyelem, "from_dsoname",
 553					      _PyUnicode_FromString(dsoname));
 554
 555		thread__find_map_fb(thread, sample->cpumode,
 556				    entries[i].to, &al);
 557		dsoname = get_dsoname(al.map);
 558		pydict_set_item_string_decref(pyelem, "to_dsoname",
 559					      _PyUnicode_FromString(dsoname));
 560
 561		addr_location__exit(&al);
 562		PyList_Append(pylist, pyelem);
 563		Py_DECREF(pyelem);
 564	}
 565
 566exit:
 567	return pylist;
 568}
 569
 570static int get_symoff(struct symbol *sym, struct addr_location *al,
 571		      bool print_off, char *bf, int size)
 572{
 573	unsigned long offset;
 574
 575	if (!sym || !sym->name[0])
 576		return scnprintf(bf, size, "%s", "[unknown]");
 577
 578	if (!print_off)
 579		return scnprintf(bf, size, "%s", sym->name);
 580
 581	offset = get_offset(sym, al);
 582
 583	return scnprintf(bf, size, "%s+0x%x", sym->name, offset);
 584}
 585
 586static int get_br_mspred(struct branch_flags *flags, char *bf, int size)
 587{
 588	if (!flags->mispred  && !flags->predicted)
 589		return scnprintf(bf, size, "%s", "-");
 590
 591	if (flags->mispred)
 592		return scnprintf(bf, size, "%s", "M");
 593
 594	return scnprintf(bf, size, "%s", "P");
 595}
 596
 597static PyObject *python_process_brstacksym(struct perf_sample *sample,
 598					   struct thread *thread)
 599{
 600	struct branch_stack *br = sample->branch_stack;
 601	struct branch_entry *entries = perf_sample__branch_entries(sample);
 602	PyObject *pylist;
 603	u64 i;
 604	char bf[512];
 605
 606	pylist = PyList_New(0);
 607	if (!pylist)
 608		Py_FatalError("couldn't create Python list");
 609
 610	if (!(br && br->nr))
 611		goto exit;
 612
 613	for (i = 0; i < br->nr; i++) {
 614		PyObject *pyelem;
 615		struct addr_location al;
 616
 617		addr_location__init(&al);
 618		pyelem = PyDict_New();
 619		if (!pyelem)
 620			Py_FatalError("couldn't create Python dictionary");
 621
 622		thread__find_symbol_fb(thread, sample->cpumode,
 623				       entries[i].from, &al);
 624		get_symoff(al.sym, &al, true, bf, sizeof(bf));
 625		pydict_set_item_string_decref(pyelem, "from",
 626					      _PyUnicode_FromString(bf));
 627
 628		thread__find_symbol_fb(thread, sample->cpumode,
 629				       entries[i].to, &al);
 630		get_symoff(al.sym, &al, true, bf, sizeof(bf));
 631		pydict_set_item_string_decref(pyelem, "to",
 632					      _PyUnicode_FromString(bf));
 633
 634		get_br_mspred(&entries[i].flags, bf, sizeof(bf));
 635		pydict_set_item_string_decref(pyelem, "pred",
 636					      _PyUnicode_FromString(bf));
 637
 638		if (entries[i].flags.in_tx) {
 639			pydict_set_item_string_decref(pyelem, "in_tx",
 640					      _PyUnicode_FromString("X"));
 641		} else {
 642			pydict_set_item_string_decref(pyelem, "in_tx",
 643					      _PyUnicode_FromString("-"));
 644		}
 645
 646		if (entries[i].flags.abort) {
 647			pydict_set_item_string_decref(pyelem, "abort",
 648					      _PyUnicode_FromString("A"));
 649		} else {
 650			pydict_set_item_string_decref(pyelem, "abort",
 651					      _PyUnicode_FromString("-"));
 652		}
 653
 654		PyList_Append(pylist, pyelem);
 655		Py_DECREF(pyelem);
 656		addr_location__exit(&al);
 657	}
 658
 659exit:
 660	return pylist;
 661}
 662
 663static PyObject *get_sample_value_as_tuple(struct sample_read_value *value,
 664					   u64 read_format)
 665{
 666	PyObject *t;
 667
 668	t = PyTuple_New(3);
 669	if (!t)
 670		Py_FatalError("couldn't create Python tuple");
 671	PyTuple_SetItem(t, 0, PyLong_FromUnsignedLongLong(value->id));
 672	PyTuple_SetItem(t, 1, PyLong_FromUnsignedLongLong(value->value));
 673	if (read_format & PERF_FORMAT_LOST)
 674		PyTuple_SetItem(t, 2, PyLong_FromUnsignedLongLong(value->lost));
 675
 676	return t;
 677}
 678
 679static void set_sample_read_in_dict(PyObject *dict_sample,
 680					 struct perf_sample *sample,
 681					 struct evsel *evsel)
 682{
 683	u64 read_format = evsel->core.attr.read_format;
 684	PyObject *values;
 685	unsigned int i;
 686
 687	if (read_format & PERF_FORMAT_TOTAL_TIME_ENABLED) {
 688		pydict_set_item_string_decref(dict_sample, "time_enabled",
 689			PyLong_FromUnsignedLongLong(sample->read.time_enabled));
 690	}
 691
 692	if (read_format & PERF_FORMAT_TOTAL_TIME_RUNNING) {
 693		pydict_set_item_string_decref(dict_sample, "time_running",
 694			PyLong_FromUnsignedLongLong(sample->read.time_running));
 695	}
 696
 697	if (read_format & PERF_FORMAT_GROUP)
 698		values = PyList_New(sample->read.group.nr);
 699	else
 700		values = PyList_New(1);
 701
 702	if (!values)
 703		Py_FatalError("couldn't create Python list");
 704
 705	if (read_format & PERF_FORMAT_GROUP) {
 706		struct sample_read_value *v = sample->read.group.values;
 707
 708		i = 0;
 709		sample_read_group__for_each(v, sample->read.group.nr, read_format) {
 710			PyObject *t = get_sample_value_as_tuple(v, read_format);
 711			PyList_SET_ITEM(values, i, t);
 712			i++;
 713		}
 714	} else {
 715		PyObject *t = get_sample_value_as_tuple(&sample->read.one,
 716							read_format);
 717		PyList_SET_ITEM(values, 0, t);
 718	}
 719	pydict_set_item_string_decref(dict_sample, "values", values);
 720}
 721
 722static void set_sample_datasrc_in_dict(PyObject *dict,
 723				       struct perf_sample *sample)
 724{
 725	struct mem_info mi = { .data_src.val = sample->data_src };
 726	char decode[100];
 727
 
 
 
 728	pydict_set_item_string_decref(dict, "datasrc",
 729			PyLong_FromUnsignedLongLong(sample->data_src));
 730
 731	perf_script__meminfo_scnprintf(decode, 100, &mi);
 
 
 732
 733	pydict_set_item_string_decref(dict, "datasrc_decode",
 734			_PyUnicode_FromString(decode));
 735}
 736
 737static void regs_map(struct regs_dump *regs, uint64_t mask, const char *arch, char *bf, int size)
 738{
 739	unsigned int i = 0, r;
 740	int printed = 0;
 741
 742	bf[0] = 0;
 743
 744	if (size <= 0)
 745		return;
 746
 747	if (!regs || !regs->regs)
 748		return;
 749
 750	for_each_set_bit(r, (unsigned long *) &mask, sizeof(mask) * 8) {
 751		u64 val = regs->regs[i++];
 752
 753		printed += scnprintf(bf + printed, size - printed,
 754				     "%5s:0x%" PRIx64 " ",
 755				     perf_reg_name(r, arch), val);
 756	}
 757}
 758
 
 
 759static int set_regs_in_dict(PyObject *dict,
 760			     struct perf_sample *sample,
 761			     struct evsel *evsel)
 762{
 763	struct perf_event_attr *attr = &evsel->core.attr;
 764	const char *arch = perf_env__arch(evsel__env(evsel));
 765
 766	/*
 767	 * Here value 28 is a constant size which can be used to print
 768	 * one register value and its corresponds to:
 769	 * 16 chars is to specify 64 bit register in hexadecimal.
 770	 * 2 chars is for appending "0x" to the hexadecimal value and
 771	 * 10 chars is for register name.
 772	 */
 773	int size = __sw_hweight64(attr->sample_regs_intr) * 28;
 774	char *bf = malloc(size);
 775	if (!bf)
 776		return -1;
 777
 778	regs_map(&sample->intr_regs, attr->sample_regs_intr, arch, bf, size);
 779
 780	pydict_set_item_string_decref(dict, "iregs",
 781			_PyUnicode_FromString(bf));
 782
 783	regs_map(&sample->user_regs, attr->sample_regs_user, arch, bf, size);
 784
 785	pydict_set_item_string_decref(dict, "uregs",
 786			_PyUnicode_FromString(bf));
 787	free(bf);
 788
 789	return 0;
 790}
 791
 792static void set_sym_in_dict(PyObject *dict, struct addr_location *al,
 793			    const char *dso_field, const char *dso_bid_field,
 794			    const char *dso_map_start, const char *dso_map_end,
 795			    const char *sym_field, const char *symoff_field)
 
 796{
 797	char sbuild_id[SBUILD_ID_SIZE];
 798
 799	if (al->map) {
 800		struct dso *dso = map__dso(al->map);
 801
 802		pydict_set_item_string_decref(dict, dso_field, _PyUnicode_FromString(dso->name));
 803		build_id__sprintf(&dso->bid, sbuild_id);
 
 804		pydict_set_item_string_decref(dict, dso_bid_field,
 805			_PyUnicode_FromString(sbuild_id));
 806		pydict_set_item_string_decref(dict, dso_map_start,
 807			PyLong_FromUnsignedLong(map__start(al->map)));
 808		pydict_set_item_string_decref(dict, dso_map_end,
 809			PyLong_FromUnsignedLong(map__end(al->map)));
 
 
 810	}
 811	if (al->sym) {
 812		pydict_set_item_string_decref(dict, sym_field,
 813			_PyUnicode_FromString(al->sym->name));
 814		pydict_set_item_string_decref(dict, symoff_field,
 815			PyLong_FromUnsignedLong(get_offset(al->sym, al)));
 816	}
 817}
 818
 819static void set_sample_flags(PyObject *dict, u32 flags)
 820{
 821	const char *ch = PERF_IP_FLAG_CHARS;
 822	char *p, str[33];
 823
 824	for (p = str; *ch; ch++, flags >>= 1) {
 825		if (flags & 1)
 826			*p++ = *ch;
 827	}
 828	*p = 0;
 829	pydict_set_item_string_decref(dict, "flags", _PyUnicode_FromString(str));
 830}
 831
 832static void python_process_sample_flags(struct perf_sample *sample, PyObject *dict_sample)
 833{
 834	char flags_disp[SAMPLE_FLAGS_BUF_SIZE];
 835
 836	set_sample_flags(dict_sample, sample->flags);
 837	perf_sample__sprintf_flags(sample->flags, flags_disp, sizeof(flags_disp));
 838	pydict_set_item_string_decref(dict_sample, "flags_disp",
 839		_PyUnicode_FromString(flags_disp));
 840}
 841
 842static PyObject *get_perf_sample_dict(struct perf_sample *sample,
 843					 struct evsel *evsel,
 844					 struct addr_location *al,
 845					 struct addr_location *addr_al,
 846					 PyObject *callchain)
 847{
 848	PyObject *dict, *dict_sample, *brstack, *brstacksym;
 849
 850	dict = PyDict_New();
 851	if (!dict)
 852		Py_FatalError("couldn't create Python dictionary");
 853
 854	dict_sample = PyDict_New();
 855	if (!dict_sample)
 856		Py_FatalError("couldn't create Python dictionary");
 857
 858	pydict_set_item_string_decref(dict, "ev_name", _PyUnicode_FromString(evsel__name(evsel)));
 859	pydict_set_item_string_decref(dict, "attr", _PyBytes_FromStringAndSize((const char *)&evsel->core.attr, sizeof(evsel->core.attr)));
 860
 861	pydict_set_item_string_decref(dict_sample, "id",
 862			PyLong_FromUnsignedLongLong(sample->id));
 863	pydict_set_item_string_decref(dict_sample, "stream_id",
 864			PyLong_FromUnsignedLongLong(sample->stream_id));
 865	pydict_set_item_string_decref(dict_sample, "pid",
 866			_PyLong_FromLong(sample->pid));
 867	pydict_set_item_string_decref(dict_sample, "tid",
 868			_PyLong_FromLong(sample->tid));
 869	pydict_set_item_string_decref(dict_sample, "cpu",
 870			_PyLong_FromLong(sample->cpu));
 871	pydict_set_item_string_decref(dict_sample, "ip",
 872			PyLong_FromUnsignedLongLong(sample->ip));
 873	pydict_set_item_string_decref(dict_sample, "time",
 874			PyLong_FromUnsignedLongLong(sample->time));
 875	pydict_set_item_string_decref(dict_sample, "period",
 876			PyLong_FromUnsignedLongLong(sample->period));
 877	pydict_set_item_string_decref(dict_sample, "phys_addr",
 878			PyLong_FromUnsignedLongLong(sample->phys_addr));
 879	pydict_set_item_string_decref(dict_sample, "addr",
 880			PyLong_FromUnsignedLongLong(sample->addr));
 881	set_sample_read_in_dict(dict_sample, sample, evsel);
 882	pydict_set_item_string_decref(dict_sample, "weight",
 883			PyLong_FromUnsignedLongLong(sample->weight));
 
 
 884	pydict_set_item_string_decref(dict_sample, "transaction",
 885			PyLong_FromUnsignedLongLong(sample->transaction));
 886	set_sample_datasrc_in_dict(dict_sample, sample);
 887	pydict_set_item_string_decref(dict, "sample", dict_sample);
 888
 889	pydict_set_item_string_decref(dict, "raw_buf", _PyBytes_FromStringAndSize(
 890			(const char *)sample->raw_data, sample->raw_size));
 891	pydict_set_item_string_decref(dict, "comm",
 892			_PyUnicode_FromString(thread__comm_str(al->thread)));
 893	set_sym_in_dict(dict, al, "dso", "dso_bid", "dso_map_start", "dso_map_end",
 894			"symbol", "symoff");
 895
 896	pydict_set_item_string_decref(dict, "callchain", callchain);
 897
 898	brstack = python_process_brstack(sample, al->thread);
 899	pydict_set_item_string_decref(dict, "brstack", brstack);
 900
 901	brstacksym = python_process_brstacksym(sample, al->thread);
 902	pydict_set_item_string_decref(dict, "brstacksym", brstacksym);
 903
 904	if (sample->machine_pid) {
 905		pydict_set_item_string_decref(dict_sample, "machine_pid",
 906				_PyLong_FromLong(sample->machine_pid));
 907		pydict_set_item_string_decref(dict_sample, "vcpu",
 908				_PyLong_FromLong(sample->vcpu));
 909	}
 910
 911	pydict_set_item_string_decref(dict_sample, "cpumode",
 912			_PyLong_FromLong((unsigned long)sample->cpumode));
 913
 914	if (addr_al) {
 915		pydict_set_item_string_decref(dict_sample, "addr_correlates_sym",
 916			PyBool_FromLong(1));
 917		set_sym_in_dict(dict_sample, addr_al, "addr_dso", "addr_dso_bid",
 918				"addr_dso_map_start", "addr_dso_map_end",
 919				"addr_symbol", "addr_symoff");
 920	}
 921
 922	if (sample->flags)
 923		python_process_sample_flags(sample, dict_sample);
 924
 925	/* Instructions per cycle (IPC) */
 926	if (sample->insn_cnt && sample->cyc_cnt) {
 927		pydict_set_item_string_decref(dict_sample, "insn_cnt",
 928			PyLong_FromUnsignedLongLong(sample->insn_cnt));
 929		pydict_set_item_string_decref(dict_sample, "cyc_cnt",
 930			PyLong_FromUnsignedLongLong(sample->cyc_cnt));
 931	}
 932
 933	if (set_regs_in_dict(dict, sample, evsel))
 934		Py_FatalError("Failed to setting regs in dict");
 935
 936	return dict;
 937}
 938
 939#ifdef HAVE_LIBTRACEEVENT
 940static void python_process_tracepoint(struct perf_sample *sample,
 941				      struct evsel *evsel,
 942				      struct addr_location *al,
 943				      struct addr_location *addr_al)
 944{
 945	struct tep_event *event = evsel->tp_format;
 946	PyObject *handler, *context, *t, *obj = NULL, *callchain;
 947	PyObject *dict = NULL, *all_entries_dict = NULL;
 948	static char handler_name[256];
 949	struct tep_format_field *field;
 950	unsigned long s, ns;
 951	unsigned n = 0;
 952	int pid;
 953	int cpu = sample->cpu;
 954	void *data = sample->raw_data;
 955	unsigned long long nsecs = sample->time;
 956	const char *comm = thread__comm_str(al->thread);
 957	const char *default_handler_name = "trace_unhandled";
 958	DECLARE_BITMAP(events_defined, TRACE_EVENT_TYPE_MAX);
 959
 960	bitmap_zero(events_defined, TRACE_EVENT_TYPE_MAX);
 961
 962	if (!event) {
 963		snprintf(handler_name, sizeof(handler_name),
 964			 "ug! no event found for type %" PRIu64, (u64)evsel->core.attr.config);
 965		Py_FatalError(handler_name);
 966	}
 967
 968	pid = raw_field_value(event, "common_pid", data);
 969
 970	sprintf(handler_name, "%s__%s", event->system, event->name);
 971
 972	if (!__test_and_set_bit(event->id, events_defined))
 973		define_event_symbols(event, handler_name, event->print_fmt.args);
 974
 975	handler = get_handler(handler_name);
 976	if (!handler) {
 977		handler = get_handler(default_handler_name);
 978		if (!handler)
 979			return;
 980		dict = PyDict_New();
 981		if (!dict)
 982			Py_FatalError("couldn't create Python dict");
 983	}
 984
 985	t = PyTuple_New(MAX_FIELDS);
 986	if (!t)
 987		Py_FatalError("couldn't create Python tuple");
 988
 989
 990	s = nsecs / NSEC_PER_SEC;
 991	ns = nsecs - s * NSEC_PER_SEC;
 992
 993	context = _PyCapsule_New(scripting_context, NULL, NULL);
 994
 995	PyTuple_SetItem(t, n++, _PyUnicode_FromString(handler_name));
 996	PyTuple_SetItem(t, n++, context);
 997
 998	/* ip unwinding */
 999	callchain = python_process_callchain(sample, evsel, al);
1000	/* Need an additional reference for the perf_sample dict */
1001	Py_INCREF(callchain);
1002
1003	if (!dict) {
1004		PyTuple_SetItem(t, n++, _PyLong_FromLong(cpu));
1005		PyTuple_SetItem(t, n++, _PyLong_FromLong(s));
1006		PyTuple_SetItem(t, n++, _PyLong_FromLong(ns));
1007		PyTuple_SetItem(t, n++, _PyLong_FromLong(pid));
1008		PyTuple_SetItem(t, n++, _PyUnicode_FromString(comm));
1009		PyTuple_SetItem(t, n++, callchain);
1010	} else {
1011		pydict_set_item_string_decref(dict, "common_cpu", _PyLong_FromLong(cpu));
1012		pydict_set_item_string_decref(dict, "common_s", _PyLong_FromLong(s));
1013		pydict_set_item_string_decref(dict, "common_ns", _PyLong_FromLong(ns));
1014		pydict_set_item_string_decref(dict, "common_pid", _PyLong_FromLong(pid));
1015		pydict_set_item_string_decref(dict, "common_comm", _PyUnicode_FromString(comm));
1016		pydict_set_item_string_decref(dict, "common_callchain", callchain);
1017	}
1018	for (field = event->format.fields; field; field = field->next) {
1019		unsigned int offset, len;
1020		unsigned long long val;
1021
1022		if (field->flags & TEP_FIELD_IS_ARRAY) {
1023			offset = field->offset;
1024			len    = field->size;
1025			if (field->flags & TEP_FIELD_IS_DYNAMIC) {
1026				val     = tep_read_number(scripting_context->pevent,
1027							  data + offset, len);
1028				offset  = val;
1029				len     = offset >> 16;
1030				offset &= 0xffff;
1031				if (tep_field_is_relative(field->flags))
1032					offset += field->offset + field->size;
1033			}
1034			if (field->flags & TEP_FIELD_IS_STRING &&
1035			    is_printable_array(data + offset, len)) {
1036				obj = _PyUnicode_FromString((char *) data + offset);
1037			} else {
1038				obj = PyByteArray_FromStringAndSize((const char *) data + offset, len);
1039				field->flags &= ~TEP_FIELD_IS_STRING;
1040			}
1041		} else { /* FIELD_IS_NUMERIC */
1042			obj = get_field_numeric_entry(event, field, data);
1043		}
1044		if (!dict)
1045			PyTuple_SetItem(t, n++, obj);
1046		else
1047			pydict_set_item_string_decref(dict, field->name, obj);
1048
1049	}
1050
1051	if (dict)
1052		PyTuple_SetItem(t, n++, dict);
1053
1054	if (get_argument_count(handler) == (int) n + 1) {
1055		all_entries_dict = get_perf_sample_dict(sample, evsel, al, addr_al,
1056			callchain);
1057		PyTuple_SetItem(t, n++,	all_entries_dict);
1058	} else {
1059		Py_DECREF(callchain);
1060	}
1061
1062	if (_PyTuple_Resize(&t, n) == -1)
1063		Py_FatalError("error resizing Python tuple");
1064
1065	if (!dict)
1066		call_object(handler, t, handler_name);
1067	else
1068		call_object(handler, t, default_handler_name);
1069
1070	Py_DECREF(t);
1071}
1072#else
1073static void python_process_tracepoint(struct perf_sample *sample __maybe_unused,
1074				      struct evsel *evsel __maybe_unused,
1075				      struct addr_location *al __maybe_unused,
1076				      struct addr_location *addr_al __maybe_unused)
1077{
1078	fprintf(stderr, "Tracepoint events are not supported because "
1079			"perf is not linked with libtraceevent.\n");
1080}
1081#endif
1082
1083static PyObject *tuple_new(unsigned int sz)
1084{
1085	PyObject *t;
1086
1087	t = PyTuple_New(sz);
1088	if (!t)
1089		Py_FatalError("couldn't create Python tuple");
1090	return t;
1091}
1092
1093static int tuple_set_s64(PyObject *t, unsigned int pos, s64 val)
1094{
1095#if BITS_PER_LONG == 64
1096	return PyTuple_SetItem(t, pos, _PyLong_FromLong(val));
1097#endif
1098#if BITS_PER_LONG == 32
1099	return PyTuple_SetItem(t, pos, PyLong_FromLongLong(val));
1100#endif
1101}
1102
1103/*
1104 * Databases support only signed 64-bit numbers, so even though we are
1105 * exporting a u64, it must be as s64.
1106 */
1107#define tuple_set_d64 tuple_set_s64
1108
1109static int tuple_set_u64(PyObject *t, unsigned int pos, u64 val)
1110{
1111#if BITS_PER_LONG == 64
1112	return PyTuple_SetItem(t, pos, PyLong_FromUnsignedLong(val));
1113#endif
1114#if BITS_PER_LONG == 32
1115	return PyTuple_SetItem(t, pos, PyLong_FromUnsignedLongLong(val));
1116#endif
1117}
1118
1119static int tuple_set_u32(PyObject *t, unsigned int pos, u32 val)
1120{
1121	return PyTuple_SetItem(t, pos, PyLong_FromUnsignedLong(val));
1122}
1123
1124static int tuple_set_s32(PyObject *t, unsigned int pos, s32 val)
1125{
1126	return PyTuple_SetItem(t, pos, _PyLong_FromLong(val));
1127}
1128
1129static int tuple_set_bool(PyObject *t, unsigned int pos, bool val)
1130{
1131	return PyTuple_SetItem(t, pos, PyBool_FromLong(val));
1132}
1133
1134static int tuple_set_string(PyObject *t, unsigned int pos, const char *s)
1135{
1136	return PyTuple_SetItem(t, pos, _PyUnicode_FromString(s));
1137}
1138
1139static int tuple_set_bytes(PyObject *t, unsigned int pos, void *bytes,
1140			   unsigned int sz)
1141{
1142	return PyTuple_SetItem(t, pos, _PyBytes_FromStringAndSize(bytes, sz));
1143}
1144
1145static int python_export_evsel(struct db_export *dbe, struct evsel *evsel)
1146{
1147	struct tables *tables = container_of(dbe, struct tables, dbe);
1148	PyObject *t;
1149
1150	t = tuple_new(2);
1151
1152	tuple_set_d64(t, 0, evsel->db_id);
1153	tuple_set_string(t, 1, evsel__name(evsel));
1154
1155	call_object(tables->evsel_handler, t, "evsel_table");
1156
1157	Py_DECREF(t);
1158
1159	return 0;
1160}
1161
1162static int python_export_machine(struct db_export *dbe,
1163				 struct machine *machine)
1164{
1165	struct tables *tables = container_of(dbe, struct tables, dbe);
1166	PyObject *t;
1167
1168	t = tuple_new(3);
1169
1170	tuple_set_d64(t, 0, machine->db_id);
1171	tuple_set_s32(t, 1, machine->pid);
1172	tuple_set_string(t, 2, machine->root_dir ? machine->root_dir : "");
1173
1174	call_object(tables->machine_handler, t, "machine_table");
1175
1176	Py_DECREF(t);
1177
1178	return 0;
1179}
1180
1181static int python_export_thread(struct db_export *dbe, struct thread *thread,
1182				u64 main_thread_db_id, struct machine *machine)
1183{
1184	struct tables *tables = container_of(dbe, struct tables, dbe);
1185	PyObject *t;
1186
1187	t = tuple_new(5);
1188
1189	tuple_set_d64(t, 0, thread__db_id(thread));
1190	tuple_set_d64(t, 1, machine->db_id);
1191	tuple_set_d64(t, 2, main_thread_db_id);
1192	tuple_set_s32(t, 3, thread__pid(thread));
1193	tuple_set_s32(t, 4, thread__tid(thread));
1194
1195	call_object(tables->thread_handler, t, "thread_table");
1196
1197	Py_DECREF(t);
1198
1199	return 0;
1200}
1201
1202static int python_export_comm(struct db_export *dbe, struct comm *comm,
1203			      struct thread *thread)
1204{
1205	struct tables *tables = container_of(dbe, struct tables, dbe);
1206	PyObject *t;
1207
1208	t = tuple_new(5);
1209
1210	tuple_set_d64(t, 0, comm->db_id);
1211	tuple_set_string(t, 1, comm__str(comm));
1212	tuple_set_d64(t, 2, thread__db_id(thread));
1213	tuple_set_d64(t, 3, comm->start);
1214	tuple_set_s32(t, 4, comm->exec);
1215
1216	call_object(tables->comm_handler, t, "comm_table");
1217
1218	Py_DECREF(t);
1219
1220	return 0;
1221}
1222
1223static int python_export_comm_thread(struct db_export *dbe, u64 db_id,
1224				     struct comm *comm, struct thread *thread)
1225{
1226	struct tables *tables = container_of(dbe, struct tables, dbe);
1227	PyObject *t;
1228
1229	t = tuple_new(3);
1230
1231	tuple_set_d64(t, 0, db_id);
1232	tuple_set_d64(t, 1, comm->db_id);
1233	tuple_set_d64(t, 2, thread__db_id(thread));
1234
1235	call_object(tables->comm_thread_handler, t, "comm_thread_table");
1236
1237	Py_DECREF(t);
1238
1239	return 0;
1240}
1241
1242static int python_export_dso(struct db_export *dbe, struct dso *dso,
1243			     struct machine *machine)
1244{
1245	struct tables *tables = container_of(dbe, struct tables, dbe);
1246	char sbuild_id[SBUILD_ID_SIZE];
1247	PyObject *t;
1248
1249	build_id__sprintf(&dso->bid, sbuild_id);
1250
1251	t = tuple_new(5);
1252
1253	tuple_set_d64(t, 0, dso->db_id);
1254	tuple_set_d64(t, 1, machine->db_id);
1255	tuple_set_string(t, 2, dso->short_name);
1256	tuple_set_string(t, 3, dso->long_name);
1257	tuple_set_string(t, 4, sbuild_id);
1258
1259	call_object(tables->dso_handler, t, "dso_table");
1260
1261	Py_DECREF(t);
1262
1263	return 0;
1264}
1265
1266static int python_export_symbol(struct db_export *dbe, struct symbol *sym,
1267				struct dso *dso)
1268{
1269	struct tables *tables = container_of(dbe, struct tables, dbe);
1270	u64 *sym_db_id = symbol__priv(sym);
1271	PyObject *t;
1272
1273	t = tuple_new(6);
1274
1275	tuple_set_d64(t, 0, *sym_db_id);
1276	tuple_set_d64(t, 1, dso->db_id);
1277	tuple_set_d64(t, 2, sym->start);
1278	tuple_set_d64(t, 3, sym->end);
1279	tuple_set_s32(t, 4, sym->binding);
1280	tuple_set_string(t, 5, sym->name);
1281
1282	call_object(tables->symbol_handler, t, "symbol_table");
1283
1284	Py_DECREF(t);
1285
1286	return 0;
1287}
1288
1289static int python_export_branch_type(struct db_export *dbe, u32 branch_type,
1290				     const char *name)
1291{
1292	struct tables *tables = container_of(dbe, struct tables, dbe);
1293	PyObject *t;
1294
1295	t = tuple_new(2);
1296
1297	tuple_set_s32(t, 0, branch_type);
1298	tuple_set_string(t, 1, name);
1299
1300	call_object(tables->branch_type_handler, t, "branch_type_table");
1301
1302	Py_DECREF(t);
1303
1304	return 0;
1305}
1306
1307static void python_export_sample_table(struct db_export *dbe,
1308				       struct export_sample *es)
1309{
1310	struct tables *tables = container_of(dbe, struct tables, dbe);
1311	PyObject *t;
1312
1313	t = tuple_new(27);
1314
1315	tuple_set_d64(t, 0, es->db_id);
1316	tuple_set_d64(t, 1, es->evsel->db_id);
1317	tuple_set_d64(t, 2, maps__machine(es->al->maps)->db_id);
1318	tuple_set_d64(t, 3, thread__db_id(es->al->thread));
1319	tuple_set_d64(t, 4, es->comm_db_id);
1320	tuple_set_d64(t, 5, es->dso_db_id);
1321	tuple_set_d64(t, 6, es->sym_db_id);
1322	tuple_set_d64(t, 7, es->offset);
1323	tuple_set_d64(t, 8, es->sample->ip);
1324	tuple_set_d64(t, 9, es->sample->time);
1325	tuple_set_s32(t, 10, es->sample->cpu);
1326	tuple_set_d64(t, 11, es->addr_dso_db_id);
1327	tuple_set_d64(t, 12, es->addr_sym_db_id);
1328	tuple_set_d64(t, 13, es->addr_offset);
1329	tuple_set_d64(t, 14, es->sample->addr);
1330	tuple_set_d64(t, 15, es->sample->period);
1331	tuple_set_d64(t, 16, es->sample->weight);
1332	tuple_set_d64(t, 17, es->sample->transaction);
1333	tuple_set_d64(t, 18, es->sample->data_src);
1334	tuple_set_s32(t, 19, es->sample->flags & PERF_BRANCH_MASK);
1335	tuple_set_s32(t, 20, !!(es->sample->flags & PERF_IP_FLAG_IN_TX));
1336	tuple_set_d64(t, 21, es->call_path_id);
1337	tuple_set_d64(t, 22, es->sample->insn_cnt);
1338	tuple_set_d64(t, 23, es->sample->cyc_cnt);
1339	tuple_set_s32(t, 24, es->sample->flags);
1340	tuple_set_d64(t, 25, es->sample->id);
1341	tuple_set_d64(t, 26, es->sample->stream_id);
 
1342
1343	call_object(tables->sample_handler, t, "sample_table");
1344
1345	Py_DECREF(t);
1346}
1347
1348static void python_export_synth(struct db_export *dbe, struct export_sample *es)
1349{
1350	struct tables *tables = container_of(dbe, struct tables, dbe);
1351	PyObject *t;
1352
1353	t = tuple_new(3);
1354
1355	tuple_set_d64(t, 0, es->db_id);
1356	tuple_set_d64(t, 1, es->evsel->core.attr.config);
1357	tuple_set_bytes(t, 2, es->sample->raw_data, es->sample->raw_size);
1358
1359	call_object(tables->synth_handler, t, "synth_data");
1360
1361	Py_DECREF(t);
1362}
1363
1364static int python_export_sample(struct db_export *dbe,
1365				struct export_sample *es)
1366{
1367	struct tables *tables = container_of(dbe, struct tables, dbe);
1368
1369	python_export_sample_table(dbe, es);
1370
1371	if (es->evsel->core.attr.type == PERF_TYPE_SYNTH && tables->synth_handler)
1372		python_export_synth(dbe, es);
1373
1374	return 0;
1375}
1376
1377static int python_export_call_path(struct db_export *dbe, struct call_path *cp)
1378{
1379	struct tables *tables = container_of(dbe, struct tables, dbe);
1380	PyObject *t;
1381	u64 parent_db_id, sym_db_id;
1382
1383	parent_db_id = cp->parent ? cp->parent->db_id : 0;
1384	sym_db_id = cp->sym ? *(u64 *)symbol__priv(cp->sym) : 0;
1385
1386	t = tuple_new(4);
1387
1388	tuple_set_d64(t, 0, cp->db_id);
1389	tuple_set_d64(t, 1, parent_db_id);
1390	tuple_set_d64(t, 2, sym_db_id);
1391	tuple_set_d64(t, 3, cp->ip);
1392
1393	call_object(tables->call_path_handler, t, "call_path_table");
1394
1395	Py_DECREF(t);
1396
1397	return 0;
1398}
1399
1400static int python_export_call_return(struct db_export *dbe,
1401				     struct call_return *cr)
1402{
1403	struct tables *tables = container_of(dbe, struct tables, dbe);
1404	u64 comm_db_id = cr->comm ? cr->comm->db_id : 0;
1405	PyObject *t;
1406
1407	t = tuple_new(14);
1408
1409	tuple_set_d64(t, 0, cr->db_id);
1410	tuple_set_d64(t, 1, thread__db_id(cr->thread));
1411	tuple_set_d64(t, 2, comm_db_id);
1412	tuple_set_d64(t, 3, cr->cp->db_id);
1413	tuple_set_d64(t, 4, cr->call_time);
1414	tuple_set_d64(t, 5, cr->return_time);
1415	tuple_set_d64(t, 6, cr->branch_count);
1416	tuple_set_d64(t, 7, cr->call_ref);
1417	tuple_set_d64(t, 8, cr->return_ref);
1418	tuple_set_d64(t, 9, cr->cp->parent->db_id);
1419	tuple_set_s32(t, 10, cr->flags);
1420	tuple_set_d64(t, 11, cr->parent_db_id);
1421	tuple_set_d64(t, 12, cr->insn_count);
1422	tuple_set_d64(t, 13, cr->cyc_count);
1423
1424	call_object(tables->call_return_handler, t, "call_return_table");
1425
1426	Py_DECREF(t);
1427
1428	return 0;
1429}
1430
1431static int python_export_context_switch(struct db_export *dbe, u64 db_id,
1432					struct machine *machine,
1433					struct perf_sample *sample,
1434					u64 th_out_id, u64 comm_out_id,
1435					u64 th_in_id, u64 comm_in_id, int flags)
1436{
1437	struct tables *tables = container_of(dbe, struct tables, dbe);
1438	PyObject *t;
1439
1440	t = tuple_new(9);
1441
1442	tuple_set_d64(t, 0, db_id);
1443	tuple_set_d64(t, 1, machine->db_id);
1444	tuple_set_d64(t, 2, sample->time);
1445	tuple_set_s32(t, 3, sample->cpu);
1446	tuple_set_d64(t, 4, th_out_id);
1447	tuple_set_d64(t, 5, comm_out_id);
1448	tuple_set_d64(t, 6, th_in_id);
1449	tuple_set_d64(t, 7, comm_in_id);
1450	tuple_set_s32(t, 8, flags);
1451
1452	call_object(tables->context_switch_handler, t, "context_switch");
1453
1454	Py_DECREF(t);
1455
1456	return 0;
1457}
1458
1459static int python_process_call_return(struct call_return *cr, u64 *parent_db_id,
1460				      void *data)
1461{
1462	struct db_export *dbe = data;
1463
1464	return db_export__call_return(dbe, cr, parent_db_id);
1465}
1466
1467static void python_process_general_event(struct perf_sample *sample,
1468					 struct evsel *evsel,
1469					 struct addr_location *al,
1470					 struct addr_location *addr_al)
1471{
1472	PyObject *handler, *t, *dict, *callchain;
1473	static char handler_name[64];
1474	unsigned n = 0;
1475
1476	snprintf(handler_name, sizeof(handler_name), "%s", "process_event");
1477
1478	handler = get_handler(handler_name);
1479	if (!handler)
1480		return;
1481
1482	/*
1483	 * Use the MAX_FIELDS to make the function expandable, though
1484	 * currently there is only one item for the tuple.
1485	 */
1486	t = PyTuple_New(MAX_FIELDS);
1487	if (!t)
1488		Py_FatalError("couldn't create Python tuple");
1489
1490	/* ip unwinding */
1491	callchain = python_process_callchain(sample, evsel, al);
1492	dict = get_perf_sample_dict(sample, evsel, al, addr_al, callchain);
1493
1494	PyTuple_SetItem(t, n++, dict);
1495	if (_PyTuple_Resize(&t, n) == -1)
1496		Py_FatalError("error resizing Python tuple");
1497
1498	call_object(handler, t, handler_name);
1499
1500	Py_DECREF(t);
1501}
1502
1503static void python_process_event(union perf_event *event,
1504				 struct perf_sample *sample,
1505				 struct evsel *evsel,
1506				 struct addr_location *al,
1507				 struct addr_location *addr_al)
1508{
1509	struct tables *tables = &tables_global;
1510
1511	scripting_context__update(scripting_context, event, sample, evsel, al, addr_al);
1512
1513	switch (evsel->core.attr.type) {
1514	case PERF_TYPE_TRACEPOINT:
1515		python_process_tracepoint(sample, evsel, al, addr_al);
1516		break;
1517	/* Reserve for future process_hw/sw/raw APIs */
1518	default:
1519		if (tables->db_export_mode)
1520			db_export__sample(&tables->dbe, event, sample, evsel, al, addr_al);
1521		else
1522			python_process_general_event(sample, evsel, al, addr_al);
1523	}
1524}
1525
1526static void python_process_throttle(union perf_event *event,
1527				    struct perf_sample *sample,
1528				    struct machine *machine)
1529{
1530	const char *handler_name;
1531	PyObject *handler, *t;
1532
1533	if (event->header.type == PERF_RECORD_THROTTLE)
1534		handler_name = "throttle";
1535	else
1536		handler_name = "unthrottle";
1537	handler = get_handler(handler_name);
1538	if (!handler)
1539		return;
1540
1541	t = tuple_new(6);
1542	if (!t)
1543		return;
1544
1545	tuple_set_u64(t, 0, event->throttle.time);
1546	tuple_set_u64(t, 1, event->throttle.id);
1547	tuple_set_u64(t, 2, event->throttle.stream_id);
1548	tuple_set_s32(t, 3, sample->cpu);
1549	tuple_set_s32(t, 4, sample->pid);
1550	tuple_set_s32(t, 5, sample->tid);
1551
1552	call_object(handler, t, handler_name);
1553
1554	Py_DECREF(t);
1555}
1556
1557static void python_do_process_switch(union perf_event *event,
1558				     struct perf_sample *sample,
1559				     struct machine *machine)
1560{
1561	const char *handler_name = "context_switch";
1562	bool out = event->header.misc & PERF_RECORD_MISC_SWITCH_OUT;
1563	bool out_preempt = out && (event->header.misc & PERF_RECORD_MISC_SWITCH_OUT_PREEMPT);
1564	pid_t np_pid = -1, np_tid = -1;
1565	PyObject *handler, *t;
1566
1567	handler = get_handler(handler_name);
1568	if (!handler)
1569		return;
1570
1571	if (event->header.type == PERF_RECORD_SWITCH_CPU_WIDE) {
1572		np_pid = event->context_switch.next_prev_pid;
1573		np_tid = event->context_switch.next_prev_tid;
1574	}
1575
1576	t = tuple_new(11);
1577	if (!t)
1578		return;
1579
1580	tuple_set_u64(t, 0, sample->time);
1581	tuple_set_s32(t, 1, sample->cpu);
1582	tuple_set_s32(t, 2, sample->pid);
1583	tuple_set_s32(t, 3, sample->tid);
1584	tuple_set_s32(t, 4, np_pid);
1585	tuple_set_s32(t, 5, np_tid);
1586	tuple_set_s32(t, 6, machine->pid);
1587	tuple_set_bool(t, 7, out);
1588	tuple_set_bool(t, 8, out_preempt);
1589	tuple_set_s32(t, 9, sample->machine_pid);
1590	tuple_set_s32(t, 10, sample->vcpu);
1591
1592	call_object(handler, t, handler_name);
1593
1594	Py_DECREF(t);
1595}
1596
1597static void python_process_switch(union perf_event *event,
1598				  struct perf_sample *sample,
1599				  struct machine *machine)
1600{
1601	struct tables *tables = &tables_global;
1602
1603	if (tables->db_export_mode)
1604		db_export__switch(&tables->dbe, event, sample, machine);
1605	else
1606		python_do_process_switch(event, sample, machine);
1607}
1608
1609static void python_process_auxtrace_error(struct perf_session *session __maybe_unused,
1610					  union perf_event *event)
1611{
1612	struct perf_record_auxtrace_error *e = &event->auxtrace_error;
1613	u8 cpumode = e->header.misc & PERF_RECORD_MISC_CPUMODE_MASK;
1614	const char *handler_name = "auxtrace_error";
1615	unsigned long long tm = e->time;
1616	const char *msg = e->msg;
1617	PyObject *handler, *t;
1618
1619	handler = get_handler(handler_name);
1620	if (!handler)
1621		return;
1622
1623	if (!e->fmt) {
1624		tm = 0;
1625		msg = (const char *)&e->time;
1626	}
1627
1628	t = tuple_new(11);
1629
1630	tuple_set_u32(t, 0, e->type);
1631	tuple_set_u32(t, 1, e->code);
1632	tuple_set_s32(t, 2, e->cpu);
1633	tuple_set_s32(t, 3, e->pid);
1634	tuple_set_s32(t, 4, e->tid);
1635	tuple_set_u64(t, 5, e->ip);
1636	tuple_set_u64(t, 6, tm);
1637	tuple_set_string(t, 7, msg);
1638	tuple_set_u32(t, 8, cpumode);
1639	tuple_set_s32(t, 9, e->machine_pid);
1640	tuple_set_s32(t, 10, e->vcpu);
1641
1642	call_object(handler, t, handler_name);
1643
1644	Py_DECREF(t);
1645}
1646
1647static void get_handler_name(char *str, size_t size,
1648			     struct evsel *evsel)
1649{
1650	char *p = str;
1651
1652	scnprintf(str, size, "stat__%s", evsel__name(evsel));
1653
1654	while ((p = strchr(p, ':'))) {
1655		*p = '_';
1656		p++;
1657	}
1658}
1659
1660static void
1661process_stat(struct evsel *counter, struct perf_cpu cpu, int thread, u64 tstamp,
1662	     struct perf_counts_values *count)
1663{
1664	PyObject *handler, *t;
1665	static char handler_name[256];
1666	int n = 0;
1667
1668	t = PyTuple_New(MAX_FIELDS);
1669	if (!t)
1670		Py_FatalError("couldn't create Python tuple");
1671
1672	get_handler_name(handler_name, sizeof(handler_name),
1673			 counter);
1674
1675	handler = get_handler(handler_name);
1676	if (!handler) {
1677		pr_debug("can't find python handler %s\n", handler_name);
1678		return;
1679	}
1680
1681	PyTuple_SetItem(t, n++, _PyLong_FromLong(cpu.cpu));
1682	PyTuple_SetItem(t, n++, _PyLong_FromLong(thread));
1683
1684	tuple_set_u64(t, n++, tstamp);
1685	tuple_set_u64(t, n++, count->val);
1686	tuple_set_u64(t, n++, count->ena);
1687	tuple_set_u64(t, n++, count->run);
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
1697static void python_process_stat(struct perf_stat_config *config,
1698				struct evsel *counter, u64 tstamp)
1699{
1700	struct perf_thread_map *threads = counter->core.threads;
1701	struct perf_cpu_map *cpus = counter->core.cpus;
1702	int cpu, thread;
1703
1704	for (thread = 0; thread < perf_thread_map__nr(threads); thread++) {
1705		for (cpu = 0; cpu < perf_cpu_map__nr(cpus); cpu++) {
1706			process_stat(counter, perf_cpu_map__cpu(cpus, cpu),
 
 
 
1707				     perf_thread_map__pid(threads, thread), tstamp,
1708				     perf_counts(counter->counts, cpu, thread));
1709		}
1710	}
1711}
1712
1713static void python_process_stat_interval(u64 tstamp)
1714{
1715	PyObject *handler, *t;
1716	static const char handler_name[] = "stat__interval";
1717	int n = 0;
1718
1719	t = PyTuple_New(MAX_FIELDS);
1720	if (!t)
1721		Py_FatalError("couldn't create Python tuple");
1722
1723	handler = get_handler(handler_name);
1724	if (!handler) {
1725		pr_debug("can't find python handler %s\n", handler_name);
1726		return;
1727	}
1728
1729	tuple_set_u64(t, n++, tstamp);
1730
1731	if (_PyTuple_Resize(&t, n) == -1)
1732		Py_FatalError("error resizing Python tuple");
1733
1734	call_object(handler, t, handler_name);
1735
1736	Py_DECREF(t);
1737}
1738
1739static int perf_script_context_init(void)
1740{
1741	PyObject *perf_script_context;
1742	PyObject *perf_trace_context;
1743	PyObject *dict;
1744	int ret;
1745
1746	perf_trace_context = PyImport_AddModule("perf_trace_context");
1747	if (!perf_trace_context)
1748		return -1;
1749	dict = PyModule_GetDict(perf_trace_context);
1750	if (!dict)
1751		return -1;
1752
1753	perf_script_context = _PyCapsule_New(scripting_context, NULL, NULL);
1754	if (!perf_script_context)
1755		return -1;
1756
1757	ret = PyDict_SetItemString(dict, "perf_script_context", perf_script_context);
1758	if (!ret)
1759		ret = PyDict_SetItemString(main_dict, "perf_script_context", perf_script_context);
1760	Py_DECREF(perf_script_context);
1761	return ret;
1762}
1763
1764static int run_start_sub(void)
1765{
1766	main_module = PyImport_AddModule("__main__");
1767	if (main_module == NULL)
1768		return -1;
1769	Py_INCREF(main_module);
1770
1771	main_dict = PyModule_GetDict(main_module);
1772	if (main_dict == NULL)
1773		goto error;
1774	Py_INCREF(main_dict);
1775
1776	if (perf_script_context_init())
1777		goto error;
1778
1779	try_call_object("trace_begin", NULL);
1780
1781	return 0;
1782
1783error:
1784	Py_XDECREF(main_dict);
1785	Py_XDECREF(main_module);
1786	return -1;
1787}
1788
1789#define SET_TABLE_HANDLER_(name, handler_name, table_name) do {		\
1790	tables->handler_name = get_handler(#table_name);		\
1791	if (tables->handler_name)					\
1792		tables->dbe.export_ ## name = python_export_ ## name;	\
1793} while (0)
1794
1795#define SET_TABLE_HANDLER(name) \
1796	SET_TABLE_HANDLER_(name, name ## _handler, name ## _table)
1797
1798static void set_table_handlers(struct tables *tables)
1799{
1800	const char *perf_db_export_mode = "perf_db_export_mode";
1801	const char *perf_db_export_calls = "perf_db_export_calls";
1802	const char *perf_db_export_callchains = "perf_db_export_callchains";
1803	PyObject *db_export_mode, *db_export_calls, *db_export_callchains;
1804	bool export_calls = false;
1805	bool export_callchains = false;
1806	int ret;
1807
1808	memset(tables, 0, sizeof(struct tables));
1809	if (db_export__init(&tables->dbe))
1810		Py_FatalError("failed to initialize export");
1811
1812	db_export_mode = PyDict_GetItemString(main_dict, perf_db_export_mode);
1813	if (!db_export_mode)
1814		return;
1815
1816	ret = PyObject_IsTrue(db_export_mode);
1817	if (ret == -1)
1818		handler_call_die(perf_db_export_mode);
1819	if (!ret)
1820		return;
1821
1822	/* handle export calls */
1823	tables->dbe.crp = NULL;
1824	db_export_calls = PyDict_GetItemString(main_dict, perf_db_export_calls);
1825	if (db_export_calls) {
1826		ret = PyObject_IsTrue(db_export_calls);
1827		if (ret == -1)
1828			handler_call_die(perf_db_export_calls);
1829		export_calls = !!ret;
1830	}
1831
1832	if (export_calls) {
1833		tables->dbe.crp =
1834			call_return_processor__new(python_process_call_return,
1835						   &tables->dbe);
1836		if (!tables->dbe.crp)
1837			Py_FatalError("failed to create calls processor");
1838	}
1839
1840	/* handle export callchains */
1841	tables->dbe.cpr = NULL;
1842	db_export_callchains = PyDict_GetItemString(main_dict,
1843						    perf_db_export_callchains);
1844	if (db_export_callchains) {
1845		ret = PyObject_IsTrue(db_export_callchains);
1846		if (ret == -1)
1847			handler_call_die(perf_db_export_callchains);
1848		export_callchains = !!ret;
1849	}
1850
1851	if (export_callchains) {
1852		/*
1853		 * Attempt to use the call path root from the call return
1854		 * processor, if the call return processor is in use. Otherwise,
1855		 * we allocate a new call path root. This prevents exporting
1856		 * duplicate call path ids when both are in use simultaneously.
1857		 */
1858		if (tables->dbe.crp)
1859			tables->dbe.cpr = tables->dbe.crp->cpr;
1860		else
1861			tables->dbe.cpr = call_path_root__new();
1862
1863		if (!tables->dbe.cpr)
1864			Py_FatalError("failed to create call path root");
1865	}
1866
1867	tables->db_export_mode = true;
1868	/*
1869	 * Reserve per symbol space for symbol->db_id via symbol__priv()
1870	 */
1871	symbol_conf.priv_size = sizeof(u64);
1872
1873	SET_TABLE_HANDLER(evsel);
1874	SET_TABLE_HANDLER(machine);
1875	SET_TABLE_HANDLER(thread);
1876	SET_TABLE_HANDLER(comm);
1877	SET_TABLE_HANDLER(comm_thread);
1878	SET_TABLE_HANDLER(dso);
1879	SET_TABLE_HANDLER(symbol);
1880	SET_TABLE_HANDLER(branch_type);
1881	SET_TABLE_HANDLER(sample);
1882	SET_TABLE_HANDLER(call_path);
1883	SET_TABLE_HANDLER(call_return);
1884	SET_TABLE_HANDLER(context_switch);
1885
1886	/*
1887	 * Synthesized events are samples but with architecture-specific data
1888	 * stored in sample->raw_data. They are exported via
1889	 * python_export_sample() and consequently do not need a separate export
1890	 * callback.
1891	 */
1892	tables->synth_handler = get_handler("synth_data");
1893}
1894
1895#if PY_MAJOR_VERSION < 3
1896static void _free_command_line(const char **command_line, int num)
1897{
1898	free(command_line);
1899}
1900#else
1901static void _free_command_line(wchar_t **command_line, int num)
1902{
1903	int i;
1904	for (i = 0; i < num; i++)
1905		PyMem_RawFree(command_line[i]);
1906	free(command_line);
1907}
1908#endif
1909
1910
1911/*
1912 * Start trace script
1913 */
1914static int python_start_script(const char *script, int argc, const char **argv,
1915			       struct perf_session *session)
1916{
1917	struct tables *tables = &tables_global;
1918#if PY_MAJOR_VERSION < 3
1919	const char **command_line;
1920#else
1921	wchar_t **command_line;
1922#endif
1923	/*
1924	 * Use a non-const name variable to cope with python 2.6's
1925	 * PyImport_AppendInittab prototype
1926	 */
1927	char buf[PATH_MAX], name[19] = "perf_trace_context";
1928	int i, err = 0;
1929	FILE *fp;
1930
1931	scripting_context->session = session;
1932#if PY_MAJOR_VERSION < 3
1933	command_line = malloc((argc + 1) * sizeof(const char *));
1934	if (!command_line)
1935		return -1;
1936
1937	command_line[0] = script;
1938	for (i = 1; i < argc + 1; i++)
1939		command_line[i] = argv[i - 1];
1940	PyImport_AppendInittab(name, initperf_trace_context);
1941#else
1942	command_line = malloc((argc + 1) * sizeof(wchar_t *));
1943	if (!command_line)
1944		return -1;
1945
1946	command_line[0] = Py_DecodeLocale(script, NULL);
1947	for (i = 1; i < argc + 1; i++)
1948		command_line[i] = Py_DecodeLocale(argv[i - 1], NULL);
1949	PyImport_AppendInittab(name, PyInit_perf_trace_context);
1950#endif
1951	Py_Initialize();
1952
1953#if PY_MAJOR_VERSION < 3
1954	PySys_SetArgv(argc + 1, (char **)command_line);
1955#else
1956	PySys_SetArgv(argc + 1, command_line);
1957#endif
1958
1959	fp = fopen(script, "r");
1960	if (!fp) {
1961		sprintf(buf, "Can't open python script \"%s\"", script);
1962		perror(buf);
1963		err = -1;
1964		goto error;
1965	}
1966
1967	err = PyRun_SimpleFile(fp, script);
1968	if (err) {
1969		fprintf(stderr, "Error running python script %s\n", script);
1970		goto error;
1971	}
1972
1973	err = run_start_sub();
1974	if (err) {
1975		fprintf(stderr, "Error starting python script %s\n", script);
1976		goto error;
1977	}
1978
1979	set_table_handlers(tables);
1980
1981	if (tables->db_export_mode) {
1982		err = db_export__branch_types(&tables->dbe);
1983		if (err)
1984			goto error;
1985	}
1986
1987	_free_command_line(command_line, argc + 1);
1988
1989	return err;
1990error:
1991	Py_Finalize();
1992	_free_command_line(command_line, argc + 1);
1993
1994	return err;
1995}
1996
1997static int python_flush_script(void)
1998{
1999	return 0;
2000}
2001
2002/*
2003 * Stop trace script
2004 */
2005static int python_stop_script(void)
2006{
2007	struct tables *tables = &tables_global;
2008
2009	try_call_object("trace_end", NULL);
2010
2011	db_export__exit(&tables->dbe);
2012
2013	Py_XDECREF(main_dict);
2014	Py_XDECREF(main_module);
2015	Py_Finalize();
2016
2017	return 0;
2018}
2019
2020#ifdef HAVE_LIBTRACEEVENT
2021static int python_generate_script(struct tep_handle *pevent, const char *outfile)
2022{
2023	int i, not_first, count, nr_events;
2024	struct tep_event **all_events;
2025	struct tep_event *event = NULL;
2026	struct tep_format_field *f;
2027	char fname[PATH_MAX];
2028	FILE *ofp;
2029
2030	sprintf(fname, "%s.py", outfile);
2031	ofp = fopen(fname, "w");
2032	if (ofp == NULL) {
2033		fprintf(stderr, "couldn't open %s\n", fname);
2034		return -1;
2035	}
2036	fprintf(ofp, "# perf script event handlers, "
2037		"generated by perf script -g python\n");
2038
2039	fprintf(ofp, "# Licensed under the terms of the GNU GPL"
2040		" License version 2\n\n");
2041
2042	fprintf(ofp, "# The common_* event handler fields are the most useful "
2043		"fields common to\n");
2044
2045	fprintf(ofp, "# all events.  They don't necessarily correspond to "
2046		"the 'common_*' fields\n");
2047
2048	fprintf(ofp, "# in the format files.  Those fields not available as "
2049		"handler params can\n");
2050
2051	fprintf(ofp, "# be retrieved using Python functions of the form "
2052		"common_*(context).\n");
2053
2054	fprintf(ofp, "# See the perf-script-python Documentation for the list "
2055		"of available functions.\n\n");
2056
2057	fprintf(ofp, "from __future__ import print_function\n\n");
2058	fprintf(ofp, "import os\n");
2059	fprintf(ofp, "import sys\n\n");
2060
2061	fprintf(ofp, "sys.path.append(os.environ['PERF_EXEC_PATH'] + \\\n");
2062	fprintf(ofp, "\t'/scripts/python/Perf-Trace-Util/lib/Perf/Trace')\n");
2063	fprintf(ofp, "\nfrom perf_trace_context import *\n");
2064	fprintf(ofp, "from Core import *\n\n\n");
2065
2066	fprintf(ofp, "def trace_begin():\n");
2067	fprintf(ofp, "\tprint(\"in trace_begin\")\n\n");
2068
2069	fprintf(ofp, "def trace_end():\n");
2070	fprintf(ofp, "\tprint(\"in trace_end\")\n\n");
2071
2072	nr_events = tep_get_events_count(pevent);
2073	all_events = tep_list_events(pevent, TEP_EVENT_SORT_ID);
2074
2075	for (i = 0; all_events && i < nr_events; i++) {
2076		event = all_events[i];
2077		fprintf(ofp, "def %s__%s(", event->system, event->name);
2078		fprintf(ofp, "event_name, ");
2079		fprintf(ofp, "context, ");
2080		fprintf(ofp, "common_cpu,\n");
2081		fprintf(ofp, "\tcommon_secs, ");
2082		fprintf(ofp, "common_nsecs, ");
2083		fprintf(ofp, "common_pid, ");
2084		fprintf(ofp, "common_comm,\n\t");
2085		fprintf(ofp, "common_callchain, ");
2086
2087		not_first = 0;
2088		count = 0;
2089
2090		for (f = event->format.fields; f; f = f->next) {
2091			if (not_first++)
2092				fprintf(ofp, ", ");
2093			if (++count % 5 == 0)
2094				fprintf(ofp, "\n\t");
2095
2096			fprintf(ofp, "%s", f->name);
2097		}
2098		if (not_first++)
2099			fprintf(ofp, ", ");
2100		if (++count % 5 == 0)
2101			fprintf(ofp, "\n\t\t");
2102		fprintf(ofp, "perf_sample_dict");
2103
2104		fprintf(ofp, "):\n");
2105
2106		fprintf(ofp, "\t\tprint_header(event_name, common_cpu, "
2107			"common_secs, common_nsecs,\n\t\t\t"
2108			"common_pid, common_comm)\n\n");
2109
2110		fprintf(ofp, "\t\tprint(\"");
2111
2112		not_first = 0;
2113		count = 0;
2114
2115		for (f = event->format.fields; f; f = f->next) {
2116			if (not_first++)
2117				fprintf(ofp, ", ");
2118			if (count && count % 3 == 0) {
2119				fprintf(ofp, "\" \\\n\t\t\"");
2120			}
2121			count++;
2122
2123			fprintf(ofp, "%s=", f->name);
2124			if (f->flags & TEP_FIELD_IS_STRING ||
2125			    f->flags & TEP_FIELD_IS_FLAG ||
2126			    f->flags & TEP_FIELD_IS_ARRAY ||
2127			    f->flags & TEP_FIELD_IS_SYMBOLIC)
2128				fprintf(ofp, "%%s");
2129			else if (f->flags & TEP_FIELD_IS_SIGNED)
2130				fprintf(ofp, "%%d");
2131			else
2132				fprintf(ofp, "%%u");
2133		}
2134
2135		fprintf(ofp, "\" %% \\\n\t\t(");
2136
2137		not_first = 0;
2138		count = 0;
2139
2140		for (f = event->format.fields; f; f = f->next) {
2141			if (not_first++)
2142				fprintf(ofp, ", ");
2143
2144			if (++count % 5 == 0)
2145				fprintf(ofp, "\n\t\t");
2146
2147			if (f->flags & TEP_FIELD_IS_FLAG) {
2148				if ((count - 1) % 5 != 0) {
2149					fprintf(ofp, "\n\t\t");
2150					count = 4;
2151				}
2152				fprintf(ofp, "flag_str(\"");
2153				fprintf(ofp, "%s__%s\", ", event->system,
2154					event->name);
2155				fprintf(ofp, "\"%s\", %s)", f->name,
2156					f->name);
2157			} else if (f->flags & TEP_FIELD_IS_SYMBOLIC) {
2158				if ((count - 1) % 5 != 0) {
2159					fprintf(ofp, "\n\t\t");
2160					count = 4;
2161				}
2162				fprintf(ofp, "symbol_str(\"");
2163				fprintf(ofp, "%s__%s\", ", event->system,
2164					event->name);
2165				fprintf(ofp, "\"%s\", %s)", f->name,
2166					f->name);
2167			} else
2168				fprintf(ofp, "%s", f->name);
2169		}
2170
2171		fprintf(ofp, "))\n\n");
2172
2173		fprintf(ofp, "\t\tprint('Sample: {'+"
2174			"get_dict_as_string(perf_sample_dict['sample'], ', ')+'}')\n\n");
2175
2176		fprintf(ofp, "\t\tfor node in common_callchain:");
2177		fprintf(ofp, "\n\t\t\tif 'sym' in node:");
2178		fprintf(ofp, "\n\t\t\t\tprint(\"\t[%%x] %%s%%s%%s%%s\" %% (");
2179		fprintf(ofp, "\n\t\t\t\t\tnode['ip'], node['sym']['name'],");
2180		fprintf(ofp, "\n\t\t\t\t\t\"+0x{:x}\".format(node['sym_off']) if 'sym_off' in node else \"\",");
2181		fprintf(ofp, "\n\t\t\t\t\t\" ({})\".format(node['dso'])  if 'dso' in node else \"\",");
2182		fprintf(ofp, "\n\t\t\t\t\t\" \" + node['sym_srcline'] if 'sym_srcline' in node else \"\"))");
2183		fprintf(ofp, "\n\t\t\telse:");
2184		fprintf(ofp, "\n\t\t\t\tprint(\"\t[%%x]\" %% (node['ip']))\n\n");
2185		fprintf(ofp, "\t\tprint()\n\n");
2186
2187	}
2188
2189	fprintf(ofp, "def trace_unhandled(event_name, context, "
2190		"event_fields_dict, perf_sample_dict):\n");
2191
2192	fprintf(ofp, "\t\tprint(get_dict_as_string(event_fields_dict))\n");
2193	fprintf(ofp, "\t\tprint('Sample: {'+"
2194		"get_dict_as_string(perf_sample_dict['sample'], ', ')+'}')\n\n");
2195
2196	fprintf(ofp, "def print_header("
2197		"event_name, cpu, secs, nsecs, pid, comm):\n"
2198		"\tprint(\"%%-20s %%5u %%05u.%%09u %%8u %%-20s \" %% \\\n\t"
2199		"(event_name, cpu, secs, nsecs, pid, comm), end=\"\")\n\n");
2200
2201	fprintf(ofp, "def get_dict_as_string(a_dict, delimiter=' '):\n"
2202		"\treturn delimiter.join"
2203		"(['%%s=%%s'%%(k,str(v))for k,v in sorted(a_dict.items())])\n");
2204
2205	fclose(ofp);
2206
2207	fprintf(stderr, "generated Python script: %s\n", fname);
2208
2209	return 0;
2210}
2211#else
2212static int python_generate_script(struct tep_handle *pevent __maybe_unused,
2213				  const char *outfile __maybe_unused)
2214{
2215	fprintf(stderr, "Generating Python perf-script is not supported."
2216		"  Install libtraceevent and rebuild perf to enable it.\n"
2217		"For example:\n  # apt install libtraceevent-dev (ubuntu)"
2218		"\n  # yum install libtraceevent-devel (Fedora)"
2219		"\n  etc.\n");
2220	return -1;
2221}
2222#endif
2223
2224struct scripting_ops python_scripting_ops = {
2225	.name			= "Python",
2226	.dirname		= "python",
2227	.start_script		= python_start_script,
2228	.flush_script		= python_flush_script,
2229	.stop_script		= python_stop_script,
2230	.process_event		= python_process_event,
2231	.process_switch		= python_process_switch,
2232	.process_auxtrace_error	= python_process_auxtrace_error,
2233	.process_stat		= python_process_stat,
2234	.process_stat_interval	= python_process_stat_interval,
2235	.process_throttle	= python_process_throttle,
2236	.generate_script	= python_generate_script,
2237};