trace-event-python.c

   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 <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 "../mem-info.h"
  49#include "../db-export.h"
  50#include "../thread-stack.h"
  51#include "../trace-event.h"
  52#include "../call-path.h"
  53#include "map.h"
  54#include "symbol.h"
  55#include "thread_map.h"
  56#include "print_binary.h"
  57#include "stat.h"
  58#include "mem-events.h"
  59#include "util/perf_regs.h"
  60
  61#define _PyUnicode_FromString(arg) \
  62  PyUnicode_FromString(arg)
  63#define _PyUnicode_FromStringAndSize(arg1, arg2) \
  64  PyUnicode_FromStringAndSize((arg1), (arg2))
  65#define _PyBytes_FromStringAndSize(arg1, arg2) \
  66  PyBytes_FromStringAndSize((arg1), (arg2))
  67#define _PyLong_FromLong(arg) \
  68  PyLong_FromLong(arg)
  69#define _PyLong_AsLong(arg) \
  70  PyLong_AsLong(arg)
  71#define _PyCapsule_New(arg1, arg2, arg3) \
  72  PyCapsule_New((arg1), (arg2), (arg3))
  73
  74PyMODINIT_FUNC PyInit_perf_trace_context(void);
  75
  76#ifdef HAVE_LIBTRACEEVENT
  77#define TRACE_EVENT_TYPE_MAX				\
  78	((1 << (sizeof(unsigned short) * 8)) - 1)
  79
  80#define N_COMMON_FIELDS	7
  81
  82static char *cur_field_name;
  83static int zero_flag_atom;
  84#endif
  85
  86#define MAX_FIELDS	64
  87
  88extern struct scripting_context *scripting_context;
  89
  90static PyObject *main_module, *main_dict;
  91
  92struct tables {
  93	struct db_export	dbe;
  94	PyObject		*evsel_handler;
  95	PyObject		*machine_handler;
  96	PyObject		*thread_handler;
  97	PyObject		*comm_handler;
  98	PyObject		*comm_thread_handler;
  99	PyObject		*dso_handler;
 100	PyObject		*symbol_handler;
 101	PyObject		*branch_type_handler;
 102	PyObject		*sample_handler;
 103	PyObject		*call_path_handler;
 104	PyObject		*call_return_handler;
 105	PyObject		*synth_handler;
 106	PyObject		*context_switch_handler;
 107	bool			db_export_mode;
 108};
 109
 110static struct tables tables_global;
 111
 112static void handler_call_die(const char *handler_name) __noreturn;
 113static void handler_call_die(const char *handler_name)
 114{
 115	PyErr_Print();
 116	Py_FatalError("problem in Python trace event handler");
 117	// Py_FatalError does not return
 118	// but we have to make the compiler happy
 119	abort();
 120}
 121
 122/*
 123 * Insert val into the dictionary and decrement the reference counter.
 124 * This is necessary for dictionaries since PyDict_SetItemString() does not
 125 * steal a reference, as opposed to PyTuple_SetItem().
 126 */
 127static void pydict_set_item_string_decref(PyObject *dict, const char *key, PyObject *val)
 128{
 129	PyDict_SetItemString(dict, key, val);
 130	Py_DECREF(val);
 131}
 132
 133static PyObject *get_handler(const char *handler_name)
 134{
 135	PyObject *handler;
 136
 137	handler = PyDict_GetItemString(main_dict, handler_name);
 138	if (handler && !PyCallable_Check(handler))
 139		return NULL;
 140	return handler;
 141}
 142
 143static void call_object(PyObject *handler, PyObject *args, const char *die_msg)
 144{
 145	PyObject *retval;
 146
 147	retval = PyObject_CallObject(handler, args);
 148	if (retval == NULL)
 149		handler_call_die(die_msg);
 150	Py_DECREF(retval);
 151}
 152
 153static void try_call_object(const char *handler_name, PyObject *args)
 154{
 155	PyObject *handler;
 156
 157	handler = get_handler(handler_name);
 158	if (handler)
 159		call_object(handler, args, handler_name);
 160}
 161
 162#ifdef HAVE_LIBTRACEEVENT
 163static int get_argument_count(PyObject *handler)
 164{
 165	int arg_count = 0;
 166
 167	PyObject *code_obj = code_obj = PyObject_GetAttrString(handler, "__code__");
 168	PyErr_Clear();
 169	if (code_obj) {
 170		PyObject *arg_count_obj = PyObject_GetAttrString(code_obj,
 171			"co_argcount");
 172		if (arg_count_obj) {
 173			arg_count = (int) _PyLong_AsLong(arg_count_obj);
 174			Py_DECREF(arg_count_obj);
 175		}
 176		Py_DECREF(code_obj);
 177	}
 178	return arg_count;
 179}
 180
 181static void define_value(enum tep_print_arg_type field_type,
 182			 const char *ev_name,
 183			 const char *field_name,
 184			 const char *field_value,
 185			 const char *field_str)
 186{
 187	const char *handler_name = "define_flag_value";
 188	PyObject *t;
 189	unsigned long long value;
 190	unsigned n = 0;
 191
 192	if (field_type == TEP_PRINT_SYMBOL)
 193		handler_name = "define_symbolic_value";
 194
 195	t = PyTuple_New(4);
 196	if (!t)
 197		Py_FatalError("couldn't create Python tuple");
 198
 199	value = eval_flag(field_value);
 200
 201	PyTuple_SetItem(t, n++, _PyUnicode_FromString(ev_name));
 202	PyTuple_SetItem(t, n++, _PyUnicode_FromString(field_name));
 203	PyTuple_SetItem(t, n++, _PyLong_FromLong(value));
 204	PyTuple_SetItem(t, n++, _PyUnicode_FromString(field_str));
 205
 206	try_call_object(handler_name, t);
 207
 208	Py_DECREF(t);
 209}
 210
 211static void define_values(enum tep_print_arg_type field_type,
 212			  struct tep_print_flag_sym *field,
 213			  const char *ev_name,
 214			  const char *field_name)
 215{
 216	define_value(field_type, ev_name, field_name, field->value,
 217		     field->str);
 218
 219	if (field->next)
 220		define_values(field_type, field->next, ev_name, field_name);
 221}
 222
 223static void define_field(enum tep_print_arg_type field_type,
 224			 const char *ev_name,
 225			 const char *field_name,
 226			 const char *delim)
 227{
 228	const char *handler_name = "define_flag_field";
 229	PyObject *t;
 230	unsigned n = 0;
 231
 232	if (field_type == TEP_PRINT_SYMBOL)
 233		handler_name = "define_symbolic_field";
 234
 235	if (field_type == TEP_PRINT_FLAGS)
 236		t = PyTuple_New(3);
 237	else
 238		t = PyTuple_New(2);
 239	if (!t)
 240		Py_FatalError("couldn't create Python tuple");
 241
 242	PyTuple_SetItem(t, n++, _PyUnicode_FromString(ev_name));
 243	PyTuple_SetItem(t, n++, _PyUnicode_FromString(field_name));
 244	if (field_type == TEP_PRINT_FLAGS)
 245		PyTuple_SetItem(t, n++, _PyUnicode_FromString(delim));
 246
 247	try_call_object(handler_name, t);
 248
 249	Py_DECREF(t);
 250}
 251
 252static void define_event_symbols(struct tep_event *event,
 253				 const char *ev_name,
 254				 struct tep_print_arg *args)
 255{
 256	if (args == NULL)
 257		return;
 258
 259	switch (args->type) {
 260	case TEP_PRINT_NULL:
 261		break;
 262	case TEP_PRINT_ATOM:
 263		define_value(TEP_PRINT_FLAGS, ev_name, cur_field_name, "0",
 264			     args->atom.atom);
 265		zero_flag_atom = 0;
 266		break;
 267	case TEP_PRINT_FIELD:
 268		free(cur_field_name);
 269		cur_field_name = strdup(args->field.name);
 270		break;
 271	case TEP_PRINT_FLAGS:
 272		define_event_symbols(event, ev_name, args->flags.field);
 273		define_field(TEP_PRINT_FLAGS, ev_name, cur_field_name,
 274			     args->flags.delim);
 275		define_values(TEP_PRINT_FLAGS, args->flags.flags, ev_name,
 276			      cur_field_name);
 277		break;
 278	case TEP_PRINT_SYMBOL:
 279		define_event_symbols(event, ev_name, args->symbol.field);
 280		define_field(TEP_PRINT_SYMBOL, ev_name, cur_field_name, NULL);
 281		define_values(TEP_PRINT_SYMBOL, args->symbol.symbols, ev_name,
 282			      cur_field_name);
 283		break;
 284	case TEP_PRINT_HEX:
 285	case TEP_PRINT_HEX_STR:
 286		define_event_symbols(event, ev_name, args->hex.field);
 287		define_event_symbols(event, ev_name, args->hex.size);
 288		break;
 289	case TEP_PRINT_INT_ARRAY:
 290		define_event_symbols(event, ev_name, args->int_array.field);
 291		define_event_symbols(event, ev_name, args->int_array.count);
 292		define_event_symbols(event, ev_name, args->int_array.el_size);
 293		break;
 294	case TEP_PRINT_STRING:
 295		break;
 296	case TEP_PRINT_TYPE:
 297		define_event_symbols(event, ev_name, args->typecast.item);
 298		break;
 299	case TEP_PRINT_OP:
 300		if (strcmp(args->op.op, ":") == 0)
 301			zero_flag_atom = 1;
 302		define_event_symbols(event, ev_name, args->op.left);
 303		define_event_symbols(event, ev_name, args->op.right);
 304		break;
 305	default:
 306		/* gcc warns for these? */
 307	case TEP_PRINT_BSTRING:
 308	case TEP_PRINT_DYNAMIC_ARRAY:
 309	case TEP_PRINT_DYNAMIC_ARRAY_LEN:
 310	case TEP_PRINT_FUNC:
 311	case TEP_PRINT_BITMASK:
 312		/* we should warn... */
 313		return;
 314	}
 315
 316	if (args->next)
 317		define_event_symbols(event, ev_name, args->next);
 318}
 319
 320static PyObject *get_field_numeric_entry(struct tep_event *event,
 321		struct tep_format_field *field, void *data)
 322{
 323	bool is_array = field->flags & TEP_FIELD_IS_ARRAY;
 324	PyObject *obj = NULL, *list = NULL;
 325	unsigned long long val;
 326	unsigned int item_size, n_items, i;
 327
 328	if (is_array) {
 329		list = PyList_New(field->arraylen);
 330		if (!list)
 331			Py_FatalError("couldn't create Python list");
 332		item_size = field->size / field->arraylen;
 333		n_items = field->arraylen;
 334	} else {
 335		item_size = field->size;
 336		n_items = 1;
 337	}
 338
 339	for (i = 0; i < n_items; i++) {
 340
 341		val = read_size(event, data + field->offset + i * item_size,
 342				item_size);
 343		if (field->flags & TEP_FIELD_IS_SIGNED) {
 344			if ((long long)val >= LONG_MIN &&
 345					(long long)val <= LONG_MAX)
 346				obj = _PyLong_FromLong(val);
 347			else
 348				obj = PyLong_FromLongLong(val);
 349		} else {
 350			if (val <= LONG_MAX)
 351				obj = _PyLong_FromLong(val);
 352			else
 353				obj = PyLong_FromUnsignedLongLong(val);
 354		}
 355		if (is_array)
 356			PyList_SET_ITEM(list, i, obj);
 357	}
 358	if (is_array)
 359		obj = list;
 360	return obj;
 361}
 362#endif
 363
 364static const char *get_dsoname(struct map *map)
 365{
 366	const char *dsoname = "[unknown]";
 367	struct dso *dso = map ? map__dso(map) : NULL;
 368
 369	if (dso) {
 370		if (symbol_conf.show_kernel_path && dso__long_name(dso))
 371			dsoname = dso__long_name(dso);
 372		else
 373			dsoname = dso__name(dso);
 374	}
 375
 376	return dsoname;
 377}
 378
 379static unsigned long get_offset(struct symbol *sym, struct addr_location *al)
 380{
 381	unsigned long offset;
 382
 383	if (al->addr < sym->end)
 384		offset = al->addr - sym->start;
 385	else
 386		offset = al->addr - map__start(al->map) - sym->start;
 387
 388	return offset;
 389}
 390
 391static PyObject *python_process_callchain(struct perf_sample *sample,
 392					 struct evsel *evsel,
 393					 struct addr_location *al)
 394{
 395	PyObject *pylist;
 396	struct callchain_cursor *cursor;
 397
 398	pylist = PyList_New(0);
 399	if (!pylist)
 400		Py_FatalError("couldn't create Python list");
 401
 402	if (!symbol_conf.use_callchain || !sample->callchain)
 403		goto exit;
 404
 405	cursor = get_tls_callchain_cursor();
 406	if (thread__resolve_callchain(al->thread, cursor, evsel,
 407				      sample, NULL, NULL,
 408				      scripting_max_stack) != 0) {
 409		pr_err("Failed to resolve callchain. Skipping\n");
 410		goto exit;
 411	}
 412	callchain_cursor_commit(cursor);
 413
 414
 415	while (1) {
 416		PyObject *pyelem;
 417		struct callchain_cursor_node *node;
 418		node = callchain_cursor_current(cursor);
 419		if (!node)
 420			break;
 421
 422		pyelem = PyDict_New();
 423		if (!pyelem)
 424			Py_FatalError("couldn't create Python dictionary");
 425
 426
 427		pydict_set_item_string_decref(pyelem, "ip",
 428				PyLong_FromUnsignedLongLong(node->ip));
 429
 430		if (node->ms.sym) {
 431			PyObject *pysym  = PyDict_New();
 432			if (!pysym)
 433				Py_FatalError("couldn't create Python dictionary");
 434			pydict_set_item_string_decref(pysym, "start",
 435					PyLong_FromUnsignedLongLong(node->ms.sym->start));
 436			pydict_set_item_string_decref(pysym, "end",
 437					PyLong_FromUnsignedLongLong(node->ms.sym->end));
 438			pydict_set_item_string_decref(pysym, "binding",
 439					_PyLong_FromLong(node->ms.sym->binding));
 440			pydict_set_item_string_decref(pysym, "name",
 441					_PyUnicode_FromStringAndSize(node->ms.sym->name,
 442							node->ms.sym->namelen));
 443			pydict_set_item_string_decref(pyelem, "sym", pysym);
 444
 445			if (node->ms.map) {
 446				struct map *map = node->ms.map;
 447				struct addr_location node_al;
 448				unsigned long offset;
 449
 450				addr_location__init(&node_al);
 451				node_al.addr = map__map_ip(map, node->ip);
 452				node_al.map  = map__get(map);
 453				offset = get_offset(node->ms.sym, &node_al);
 454				addr_location__exit(&node_al);
 455
 456				pydict_set_item_string_decref(
 457					pyelem, "sym_off",
 458					PyLong_FromUnsignedLongLong(offset));
 459			}
 460			if (node->srcline && strcmp(":0", node->srcline)) {
 461				pydict_set_item_string_decref(
 462					pyelem, "sym_srcline",
 463					_PyUnicode_FromString(node->srcline));
 464			}
 465		}
 466
 467		if (node->ms.map) {
 468			const char *dsoname = get_dsoname(node->ms.map);
 469
 470			pydict_set_item_string_decref(pyelem, "dso",
 471					_PyUnicode_FromString(dsoname));
 472		}
 473
 474		callchain_cursor_advance(cursor);
 475		PyList_Append(pylist, pyelem);
 476		Py_DECREF(pyelem);
 477	}
 478
 479exit:
 480	return pylist;
 481}
 482
 483static PyObject *python_process_brstack(struct perf_sample *sample,
 484					struct thread *thread)
 485{
 486	struct branch_stack *br = sample->branch_stack;
 487	struct branch_entry *entries = perf_sample__branch_entries(sample);
 488	PyObject *pylist;
 489	u64 i;
 490
 491	pylist = PyList_New(0);
 492	if (!pylist)
 493		Py_FatalError("couldn't create Python list");
 494
 495	if (!(br && br->nr))
 496		goto exit;
 497
 498	for (i = 0; i < br->nr; i++) {
 499		PyObject *pyelem;
 500		struct addr_location al;
 501		const char *dsoname;
 502
 503		pyelem = PyDict_New();
 504		if (!pyelem)
 505			Py_FatalError("couldn't create Python dictionary");
 506
 507		pydict_set_item_string_decref(pyelem, "from",
 508		    PyLong_FromUnsignedLongLong(entries[i].from));
 509		pydict_set_item_string_decref(pyelem, "to",
 510		    PyLong_FromUnsignedLongLong(entries[i].to));
 511		pydict_set_item_string_decref(pyelem, "mispred",
 512		    PyBool_FromLong(entries[i].flags.mispred));
 513		pydict_set_item_string_decref(pyelem, "predicted",
 514		    PyBool_FromLong(entries[i].flags.predicted));
 515		pydict_set_item_string_decref(pyelem, "in_tx",
 516		    PyBool_FromLong(entries[i].flags.in_tx));
 517		pydict_set_item_string_decref(pyelem, "abort",
 518		    PyBool_FromLong(entries[i].flags.abort));
 519		pydict_set_item_string_decref(pyelem, "cycles",
 520		    PyLong_FromUnsignedLongLong(entries[i].flags.cycles));
 521
 522		addr_location__init(&al);
 523		thread__find_map_fb(thread, sample->cpumode,
 524				    entries[i].from, &al);
 525		dsoname = get_dsoname(al.map);
 526		pydict_set_item_string_decref(pyelem, "from_dsoname",
 527					      _PyUnicode_FromString(dsoname));
 528
 529		thread__find_map_fb(thread, sample->cpumode,
 530				    entries[i].to, &al);
 531		dsoname = get_dsoname(al.map);
 532		pydict_set_item_string_decref(pyelem, "to_dsoname",
 533					      _PyUnicode_FromString(dsoname));
 534
 535		addr_location__exit(&al);
 536		PyList_Append(pylist, pyelem);
 537		Py_DECREF(pyelem);
 538	}
 539
 540exit:
 541	return pylist;
 542}
 543
 544static int get_symoff(struct symbol *sym, struct addr_location *al,
 545		      bool print_off, char *bf, int size)
 546{
 547	unsigned long offset;
 548
 549	if (!sym || !sym->name[0])
 550		return scnprintf(bf, size, "%s", "[unknown]");
 551
 552	if (!print_off)
 553		return scnprintf(bf, size, "%s", sym->name);
 554
 555	offset = get_offset(sym, al);
 556
 557	return scnprintf(bf, size, "%s+0x%x", sym->name, offset);
 558}
 559
 560static int get_br_mspred(struct branch_flags *flags, char *bf, int size)
 561{
 562	if (!flags->mispred  && !flags->predicted)
 563		return scnprintf(bf, size, "%s", "-");
 564
 565	if (flags->mispred)
 566		return scnprintf(bf, size, "%s", "M");
 567
 568	return scnprintf(bf, size, "%s", "P");
 569}
 570
 571static PyObject *python_process_brstacksym(struct perf_sample *sample,
 572					   struct thread *thread)
 573{
 574	struct branch_stack *br = sample->branch_stack;
 575	struct branch_entry *entries = perf_sample__branch_entries(sample);
 576	PyObject *pylist;
 577	u64 i;
 578	char bf[512];
 579
 580	pylist = PyList_New(0);
 581	if (!pylist)
 582		Py_FatalError("couldn't create Python list");
 583
 584	if (!(br && br->nr))
 585		goto exit;
 586
 587	for (i = 0; i < br->nr; i++) {
 588		PyObject *pyelem;
 589		struct addr_location al;
 590
 591		addr_location__init(&al);
 592		pyelem = PyDict_New();
 593		if (!pyelem)
 594			Py_FatalError("couldn't create Python dictionary");
 595
 596		thread__find_symbol_fb(thread, sample->cpumode,
 597				       entries[i].from, &al);
 598		get_symoff(al.sym, &al, true, bf, sizeof(bf));
 599		pydict_set_item_string_decref(pyelem, "from",
 600					      _PyUnicode_FromString(bf));
 601
 602		thread__find_symbol_fb(thread, sample->cpumode,
 603				       entries[i].to, &al);
 604		get_symoff(al.sym, &al, true, bf, sizeof(bf));
 605		pydict_set_item_string_decref(pyelem, "to",
 606					      _PyUnicode_FromString(bf));
 607
 608		get_br_mspred(&entries[i].flags, bf, sizeof(bf));
 609		pydict_set_item_string_decref(pyelem, "pred",
 610					      _PyUnicode_FromString(bf));
 611
 612		if (entries[i].flags.in_tx) {
 613			pydict_set_item_string_decref(pyelem, "in_tx",
 614					      _PyUnicode_FromString("X"));
 615		} else {
 616			pydict_set_item_string_decref(pyelem, "in_tx",
 617					      _PyUnicode_FromString("-"));
 618		}
 619
 620		if (entries[i].flags.abort) {
 621			pydict_set_item_string_decref(pyelem, "abort",
 622					      _PyUnicode_FromString("A"));
 623		} else {
 624			pydict_set_item_string_decref(pyelem, "abort",
 625					      _PyUnicode_FromString("-"));
 626		}
 627
 628		PyList_Append(pylist, pyelem);
 629		Py_DECREF(pyelem);
 630		addr_location__exit(&al);
 631	}
 632
 633exit:
 634	return pylist;
 635}
 636
 637static PyObject *get_sample_value_as_tuple(struct sample_read_value *value,
 638					   u64 read_format)
 639{
 640	PyObject *t;
 641
 642	t = PyTuple_New(3);
 643	if (!t)
 644		Py_FatalError("couldn't create Python tuple");
 645	PyTuple_SetItem(t, 0, PyLong_FromUnsignedLongLong(value->id));
 646	PyTuple_SetItem(t, 1, PyLong_FromUnsignedLongLong(value->value));
 647	if (read_format & PERF_FORMAT_LOST)
 648		PyTuple_SetItem(t, 2, PyLong_FromUnsignedLongLong(value->lost));
 649
 650	return t;
 651}
 652
 653static void set_sample_read_in_dict(PyObject *dict_sample,
 654					 struct perf_sample *sample,
 655					 struct evsel *evsel)
 656{
 657	u64 read_format = evsel->core.attr.read_format;
 658	PyObject *values;
 659	unsigned int i;
 660
 661	if (read_format & PERF_FORMAT_TOTAL_TIME_ENABLED) {
 662		pydict_set_item_string_decref(dict_sample, "time_enabled",
 663			PyLong_FromUnsignedLongLong(sample->read.time_enabled));
 664	}
 665
 666	if (read_format & PERF_FORMAT_TOTAL_TIME_RUNNING) {
 667		pydict_set_item_string_decref(dict_sample, "time_running",
 668			PyLong_FromUnsignedLongLong(sample->read.time_running));
 669	}
 670
 671	if (read_format & PERF_FORMAT_GROUP)
 672		values = PyList_New(sample->read.group.nr);
 673	else
 674		values = PyList_New(1);
 675
 676	if (!values)
 677		Py_FatalError("couldn't create Python list");
 678
 679	if (read_format & PERF_FORMAT_GROUP) {
 680		struct sample_read_value *v = sample->read.group.values;
 681
 682		i = 0;
 683		sample_read_group__for_each(v, sample->read.group.nr, read_format) {
 684			PyObject *t = get_sample_value_as_tuple(v, read_format);
 685			PyList_SET_ITEM(values, i, t);
 686			i++;
 687		}
 688	} else {
 689		PyObject *t = get_sample_value_as_tuple(&sample->read.one,
 690							read_format);
 691		PyList_SET_ITEM(values, 0, t);
 692	}
 693	pydict_set_item_string_decref(dict_sample, "values", values);
 694}
 695
 696static void set_sample_datasrc_in_dict(PyObject *dict,
 697				      struct perf_sample *sample)
 698{
 699	struct mem_info *mi = mem_info__new();
 700	char decode[100];
 701
 702	if (!mi)
 703		Py_FatalError("couldn't create mem-info");
 704
 705	pydict_set_item_string_decref(dict, "datasrc",
 706			PyLong_FromUnsignedLongLong(sample->data_src));
 707
 708	mem_info__data_src(mi)->val = sample->data_src;
 709	perf_script__meminfo_scnprintf(decode, 100, mi);
 710	mem_info__put(mi);
 711
 712	pydict_set_item_string_decref(dict, "datasrc_decode",
 713			_PyUnicode_FromString(decode));
 714}
 715
 716static void regs_map(struct regs_dump *regs, uint64_t mask, const char *arch, char *bf, int size)
 717{
 718	unsigned int i = 0, r;
 719	int printed = 0;
 720
 721	bf[0] = 0;
 722
 723	if (size <= 0)
 724		return;
 725
 726	if (!regs || !regs->regs)
 727		return;
 728
 729	for_each_set_bit(r, (unsigned long *) &mask, sizeof(mask) * 8) {
 730		u64 val = regs->regs[i++];
 731
 732		printed += scnprintf(bf + printed, size - printed,
 733				     "%5s:0x%" PRIx64 " ",
 734				     perf_reg_name(r, arch), val);
 735	}
 736}
 737
 738#define MAX_REG_SIZE 128
 739
 740static int 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	int size = (__sw_hweight64(attr->sample_regs_intr) * MAX_REG_SIZE) + 1;
 748	char *bf = NULL;
 749
 750	if (sample->intr_regs) {
 751		bf = malloc(size);
 752		if (!bf)
 753			return -1;
 754
 755		regs_map(sample->intr_regs, attr->sample_regs_intr, arch, bf, size);
 756
 757		pydict_set_item_string_decref(dict, "iregs",
 758					_PyUnicode_FromString(bf));
 759	}
 760
 761	if (sample->user_regs) {
 762		if (!bf) {
 763			bf = malloc(size);
 764			if (!bf)
 765				return -1;
 766		}
 767		regs_map(sample->user_regs, attr->sample_regs_user, arch, bf, size);
 768
 769		pydict_set_item_string_decref(dict, "uregs",
 770					_PyUnicode_FromString(bf));
 771	}
 772	free(bf);
 773
 774	return 0;
 775}
 776
 777static void set_sym_in_dict(PyObject *dict, struct addr_location *al,
 778			    const char *dso_field, const char *dso_bid_field,
 779			    const char *dso_map_start, const char *dso_map_end,
 780			    const char *sym_field, const char *symoff_field,
 781			    const char *map_pgoff)
 782{
 783	if (al->map) {
 784		char sbuild_id[SBUILD_ID_SIZE];
 785		struct dso *dso = map__dso(al->map);
 786
 787		pydict_set_item_string_decref(dict, dso_field,
 788					      _PyUnicode_FromString(dso__name(dso)));
 789		build_id__snprintf(dso__bid(dso), sbuild_id, sizeof(sbuild_id));
 790		pydict_set_item_string_decref(dict, dso_bid_field,
 791			_PyUnicode_FromString(sbuild_id));
 792		pydict_set_item_string_decref(dict, dso_map_start,
 793			PyLong_FromUnsignedLong(map__start(al->map)));
 794		pydict_set_item_string_decref(dict, dso_map_end,
 795			PyLong_FromUnsignedLong(map__end(al->map)));
 796		pydict_set_item_string_decref(dict, map_pgoff,
 797			PyLong_FromUnsignedLongLong(map__pgoff(al->map)));
 798	}
 799	if (al->sym) {
 800		pydict_set_item_string_decref(dict, sym_field,
 801			_PyUnicode_FromString(al->sym->name));
 802		pydict_set_item_string_decref(dict, symoff_field,
 803			PyLong_FromUnsignedLong(get_offset(al->sym, al)));
 804	}
 805}
 806
 807static void set_sample_flags(PyObject *dict, u32 flags)
 808{
 809	const char *ch = PERF_IP_FLAG_CHARS;
 810	char *p, str[33];
 811
 812	for (p = str; *ch; ch++, flags >>= 1) {
 813		if (flags & 1)
 814			*p++ = *ch;
 815	}
 816	*p = 0;
 817	pydict_set_item_string_decref(dict, "flags", _PyUnicode_FromString(str));
 818}
 819
 820static void python_process_sample_flags(struct perf_sample *sample, PyObject *dict_sample)
 821{
 822	char flags_disp[SAMPLE_FLAGS_BUF_SIZE];
 823
 824	set_sample_flags(dict_sample, sample->flags);
 825	perf_sample__sprintf_flags(sample->flags, flags_disp, sizeof(flags_disp));
 826	pydict_set_item_string_decref(dict_sample, "flags_disp",
 827		_PyUnicode_FromString(flags_disp));
 828}
 829
 830static PyObject *get_perf_sample_dict(struct perf_sample *sample,
 831					 struct evsel *evsel,
 832					 struct addr_location *al,
 833					 struct addr_location *addr_al,
 834					 PyObject *callchain)
 835{
 836	PyObject *dict, *dict_sample, *brstack, *brstacksym;
 837
 838	dict = PyDict_New();
 839	if (!dict)
 840		Py_FatalError("couldn't create Python dictionary");
 841
 842	dict_sample = PyDict_New();
 843	if (!dict_sample)
 844		Py_FatalError("couldn't create Python dictionary");
 845
 846	pydict_set_item_string_decref(dict, "ev_name", _PyUnicode_FromString(evsel__name(evsel)));
 847	pydict_set_item_string_decref(dict, "attr", _PyBytes_FromStringAndSize((const char *)&evsel->core.attr, sizeof(evsel->core.attr)));
 848
 849	pydict_set_item_string_decref(dict_sample, "id",
 850			PyLong_FromUnsignedLongLong(sample->id));
 851	pydict_set_item_string_decref(dict_sample, "stream_id",
 852			PyLong_FromUnsignedLongLong(sample->stream_id));
 853	pydict_set_item_string_decref(dict_sample, "pid",
 854			_PyLong_FromLong(sample->pid));
 855	pydict_set_item_string_decref(dict_sample, "tid",
 856			_PyLong_FromLong(sample->tid));
 857	pydict_set_item_string_decref(dict_sample, "cpu",
 858			_PyLong_FromLong(sample->cpu));
 859	pydict_set_item_string_decref(dict_sample, "ip",
 860			PyLong_FromUnsignedLongLong(sample->ip));
 861	pydict_set_item_string_decref(dict_sample, "time",
 862			PyLong_FromUnsignedLongLong(sample->time));
 863	pydict_set_item_string_decref(dict_sample, "period",
 864			PyLong_FromUnsignedLongLong(sample->period));
 865	pydict_set_item_string_decref(dict_sample, "phys_addr",
 866			PyLong_FromUnsignedLongLong(sample->phys_addr));
 867	pydict_set_item_string_decref(dict_sample, "addr",
 868			PyLong_FromUnsignedLongLong(sample->addr));
 869	set_sample_read_in_dict(dict_sample, sample, evsel);
 870	pydict_set_item_string_decref(dict_sample, "weight",
 871			PyLong_FromUnsignedLongLong(sample->weight));
 872	pydict_set_item_string_decref(dict_sample, "ins_lat",
 873			PyLong_FromUnsignedLong(sample->ins_lat));
 874	pydict_set_item_string_decref(dict_sample, "transaction",
 875			PyLong_FromUnsignedLongLong(sample->transaction));
 876	set_sample_datasrc_in_dict(dict_sample, sample);
 877	pydict_set_item_string_decref(dict, "sample", dict_sample);
 878
 879	pydict_set_item_string_decref(dict, "raw_buf", _PyBytes_FromStringAndSize(
 880			(const char *)sample->raw_data, sample->raw_size));
 881	pydict_set_item_string_decref(dict, "comm",
 882			_PyUnicode_FromString(thread__comm_str(al->thread)));
 883	set_sym_in_dict(dict, al, "dso", "dso_bid", "dso_map_start", "dso_map_end",
 884			"symbol", "symoff", "map_pgoff");
 885
 886	pydict_set_item_string_decref(dict, "callchain", callchain);
 887
 888	brstack = python_process_brstack(sample, al->thread);
 889	pydict_set_item_string_decref(dict, "brstack", brstack);
 890
 891	brstacksym = python_process_brstacksym(sample, al->thread);
 892	pydict_set_item_string_decref(dict, "brstacksym", brstacksym);
 893
 894	if (sample->machine_pid) {
 895		pydict_set_item_string_decref(dict_sample, "machine_pid",
 896				_PyLong_FromLong(sample->machine_pid));
 897		pydict_set_item_string_decref(dict_sample, "vcpu",
 898				_PyLong_FromLong(sample->vcpu));
 899	}
 900
 901	pydict_set_item_string_decref(dict_sample, "cpumode",
 902			_PyLong_FromLong((unsigned long)sample->cpumode));
 903
 904	if (addr_al) {
 905		pydict_set_item_string_decref(dict_sample, "addr_correlates_sym",
 906			PyBool_FromLong(1));
 907		set_sym_in_dict(dict_sample, addr_al, "addr_dso", "addr_dso_bid",
 908				"addr_dso_map_start", "addr_dso_map_end",
 909				"addr_symbol", "addr_symoff", "addr_map_pgoff");
 910	}
 911
 912	if (sample->flags)
 913		python_process_sample_flags(sample, dict_sample);
 914
 915	/* Instructions per cycle (IPC) */
 916	if (sample->insn_cnt && sample->cyc_cnt) {
 917		pydict_set_item_string_decref(dict_sample, "insn_cnt",
 918			PyLong_FromUnsignedLongLong(sample->insn_cnt));
 919		pydict_set_item_string_decref(dict_sample, "cyc_cnt",
 920			PyLong_FromUnsignedLongLong(sample->cyc_cnt));
 921	}
 922
 923	if (set_regs_in_dict(dict, sample, evsel))
 924		Py_FatalError("Failed to setting regs in dict");
 925
 926	return dict;
 927}
 928
 929#ifdef HAVE_LIBTRACEEVENT
 930static void python_process_tracepoint(struct perf_sample *sample,
 931				      struct evsel *evsel,
 932				      struct addr_location *al,
 933				      struct addr_location *addr_al)
 934{
 935	struct tep_event *event;
 936	PyObject *handler, *context, *t, *obj = NULL, *callchain;
 937	PyObject *dict = NULL, *all_entries_dict = NULL;
 938	static char handler_name[256];
 939	struct tep_format_field *field;
 940	unsigned long s, ns;
 941	unsigned n = 0;
 942	int pid;
 943	int cpu = sample->cpu;
 944	void *data = sample->raw_data;
 945	unsigned long long nsecs = sample->time;
 946	const char *comm = thread__comm_str(al->thread);
 947	const char *default_handler_name = "trace_unhandled";
 948	DECLARE_BITMAP(events_defined, TRACE_EVENT_TYPE_MAX);
 949
 950	bitmap_zero(events_defined, TRACE_EVENT_TYPE_MAX);
 951
 952	event = evsel__tp_format(evsel);
 953	if (!event) {
 954		snprintf(handler_name, sizeof(handler_name),
 955			 "ug! no event found for type %" PRIu64, (u64)evsel->core.attr.config);
 956		Py_FatalError(handler_name);
 957	}
 958
 959	pid = raw_field_value(event, "common_pid", data);
 960
 961	sprintf(handler_name, "%s__%s", event->system, event->name);
 962
 963	if (!__test_and_set_bit(event->id, events_defined))
 964		define_event_symbols(event, handler_name, event->print_fmt.args);
 965
 966	handler = get_handler(handler_name);
 967	if (!handler) {
 968		handler = get_handler(default_handler_name);
 969		if (!handler)
 970			return;
 971		dict = PyDict_New();
 972		if (!dict)
 973			Py_FatalError("couldn't create Python dict");
 974	}
 975
 976	t = PyTuple_New(MAX_FIELDS);
 977	if (!t)
 978		Py_FatalError("couldn't create Python tuple");
 979
 980
 981	s = nsecs / NSEC_PER_SEC;
 982	ns = nsecs - s * NSEC_PER_SEC;
 983
 984	context = _PyCapsule_New(scripting_context, NULL, NULL);
 985
 986	PyTuple_SetItem(t, n++, _PyUnicode_FromString(handler_name));
 987	PyTuple_SetItem(t, n++, context);
 988
 989	/* ip unwinding */
 990	callchain = python_process_callchain(sample, evsel, al);
 991	/* Need an additional reference for the perf_sample dict */
 992	Py_INCREF(callchain);
 993
 994	if (!dict) {
 995		PyTuple_SetItem(t, n++, _PyLong_FromLong(cpu));
 996		PyTuple_SetItem(t, n++, _PyLong_FromLong(s));
 997		PyTuple_SetItem(t, n++, _PyLong_FromLong(ns));
 998		PyTuple_SetItem(t, n++, _PyLong_FromLong(pid));
 999		PyTuple_SetItem(t, n++, _PyUnicode_FromString(comm));
1000		PyTuple_SetItem(t, n++, callchain);
1001	} else {
1002		pydict_set_item_string_decref(dict, "common_cpu", _PyLong_FromLong(cpu));
1003		pydict_set_item_string_decref(dict, "common_s", _PyLong_FromLong(s));
1004		pydict_set_item_string_decref(dict, "common_ns", _PyLong_FromLong(ns));
1005		pydict_set_item_string_decref(dict, "common_pid", _PyLong_FromLong(pid));
1006		pydict_set_item_string_decref(dict, "common_comm", _PyUnicode_FromString(comm));
1007		pydict_set_item_string_decref(dict, "common_callchain", callchain);
1008	}
1009	for (field = event->format.fields; field; field = field->next) {
1010		unsigned int offset, len;
1011		unsigned long long val;
1012
1013		if (field->flags & TEP_FIELD_IS_ARRAY) {
1014			offset = field->offset;
1015			len    = field->size;
1016			if (field->flags & TEP_FIELD_IS_DYNAMIC) {
1017				val     = tep_read_number(scripting_context->pevent,
1018							  data + offset, len);
1019				offset  = val;
1020				len     = offset >> 16;
1021				offset &= 0xffff;
1022				if (tep_field_is_relative(field->flags))
1023					offset += field->offset + field->size;
1024			}
1025			if (field->flags & TEP_FIELD_IS_STRING &&
1026			    is_printable_array(data + offset, len)) {
1027				obj = _PyUnicode_FromString((char *) data + offset);
1028			} else {
1029				obj = PyByteArray_FromStringAndSize((const char *) data + offset, len);
1030				field->flags &= ~TEP_FIELD_IS_STRING;
1031			}
1032		} else { /* FIELD_IS_NUMERIC */
1033			obj = get_field_numeric_entry(event, field, data);
1034		}
1035		if (!dict)
1036			PyTuple_SetItem(t, n++, obj);
1037		else
1038			pydict_set_item_string_decref(dict, field->name, obj);
1039
1040	}
1041
1042	if (dict)
1043		PyTuple_SetItem(t, n++, dict);
1044
1045	if (get_argument_count(handler) == (int) n + 1) {
1046		all_entries_dict = get_perf_sample_dict(sample, evsel, al, addr_al,
1047			callchain);
1048		PyTuple_SetItem(t, n++,	all_entries_dict);
1049	} else {
1050		Py_DECREF(callchain);
1051	}
1052
1053	if (_PyTuple_Resize(&t, n) == -1)
1054		Py_FatalError("error resizing Python tuple");
1055
1056	if (!dict)
1057		call_object(handler, t, handler_name);
1058	else
1059		call_object(handler, t, default_handler_name);
1060
1061	Py_DECREF(t);
1062}
1063#else
1064static void python_process_tracepoint(struct perf_sample *sample __maybe_unused,
1065				      struct evsel *evsel __maybe_unused,
1066				      struct addr_location *al __maybe_unused,
1067				      struct addr_location *addr_al __maybe_unused)
1068{
1069	fprintf(stderr, "Tracepoint events are not supported because "
1070			"perf is not linked with libtraceevent.\n");
1071}
1072#endif
1073
1074static PyObject *tuple_new(unsigned int sz)
1075{
1076	PyObject *t;
1077
1078	t = PyTuple_New(sz);
1079	if (!t)
1080		Py_FatalError("couldn't create Python tuple");
1081	return t;
1082}
1083
1084static int tuple_set_s64(PyObject *t, unsigned int pos, s64 val)
1085{
1086#if BITS_PER_LONG == 64
1087	return PyTuple_SetItem(t, pos, _PyLong_FromLong(val));
1088#endif
1089#if BITS_PER_LONG == 32
1090	return PyTuple_SetItem(t, pos, PyLong_FromLongLong(val));
1091#endif
1092}
1093
1094/*
1095 * Databases support only signed 64-bit numbers, so even though we are
1096 * exporting a u64, it must be as s64.
1097 */
1098#define tuple_set_d64 tuple_set_s64
1099
1100static int tuple_set_u64(PyObject *t, unsigned int pos, u64 val)
1101{
1102#if BITS_PER_LONG == 64
1103	return PyTuple_SetItem(t, pos, PyLong_FromUnsignedLong(val));
1104#endif
1105#if BITS_PER_LONG == 32
1106	return PyTuple_SetItem(t, pos, PyLong_FromUnsignedLongLong(val));
1107#endif
1108}
1109
1110static int tuple_set_u32(PyObject *t, unsigned int pos, u32 val)
1111{
1112	return PyTuple_SetItem(t, pos, PyLong_FromUnsignedLong(val));
1113}
1114
1115static int tuple_set_s32(PyObject *t, unsigned int pos, s32 val)
1116{
1117	return PyTuple_SetItem(t, pos, _PyLong_FromLong(val));
1118}
1119
1120static int tuple_set_bool(PyObject *t, unsigned int pos, bool val)
1121{
1122	return PyTuple_SetItem(t, pos, PyBool_FromLong(val));
1123}
1124
1125static int tuple_set_string(PyObject *t, unsigned int pos, const char *s)
1126{
1127	return PyTuple_SetItem(t, pos, _PyUnicode_FromString(s));
1128}
1129
1130static int tuple_set_bytes(PyObject *t, unsigned int pos, void *bytes,
1131			   unsigned int sz)
1132{
1133	return PyTuple_SetItem(t, pos, _PyBytes_FromStringAndSize(bytes, sz));
1134}
1135
1136static int python_export_evsel(struct db_export *dbe, struct evsel *evsel)
1137{
1138	struct tables *tables = container_of(dbe, struct tables, dbe);
1139	PyObject *t;
1140
1141	t = tuple_new(2);
1142
1143	tuple_set_d64(t, 0, evsel->db_id);
1144	tuple_set_string(t, 1, evsel__name(evsel));
1145
1146	call_object(tables->evsel_handler, t, "evsel_table");
1147
1148	Py_DECREF(t);
1149
1150	return 0;
1151}
1152
1153static int python_export_machine(struct db_export *dbe,
1154				 struct machine *machine)
1155{
1156	struct tables *tables = container_of(dbe, struct tables, dbe);
1157	PyObject *t;
1158
1159	t = tuple_new(3);
1160
1161	tuple_set_d64(t, 0, machine->db_id);
1162	tuple_set_s32(t, 1, machine->pid);
1163	tuple_set_string(t, 2, machine->root_dir ? machine->root_dir : "");
1164
1165	call_object(tables->machine_handler, t, "machine_table");
1166
1167	Py_DECREF(t);
1168
1169	return 0;
1170}
1171
1172static int python_export_thread(struct db_export *dbe, struct thread *thread,
1173				u64 main_thread_db_id, struct machine *machine)
1174{
1175	struct tables *tables = container_of(dbe, struct tables, dbe);
1176	PyObject *t;
1177
1178	t = tuple_new(5);
1179
1180	tuple_set_d64(t, 0, thread__db_id(thread));
1181	tuple_set_d64(t, 1, machine->db_id);
1182	tuple_set_d64(t, 2, main_thread_db_id);
1183	tuple_set_s32(t, 3, thread__pid(thread));
1184	tuple_set_s32(t, 4, thread__tid(thread));
1185
1186	call_object(tables->thread_handler, t, "thread_table");
1187
1188	Py_DECREF(t);
1189
1190	return 0;
1191}
1192
1193static int python_export_comm(struct db_export *dbe, struct comm *comm,
1194			      struct thread *thread)
1195{
1196	struct tables *tables = container_of(dbe, struct tables, dbe);
1197	PyObject *t;
1198
1199	t = tuple_new(5);
1200
1201	tuple_set_d64(t, 0, comm->db_id);
1202	tuple_set_string(t, 1, comm__str(comm));
1203	tuple_set_d64(t, 2, thread__db_id(thread));
1204	tuple_set_d64(t, 3, comm->start);
1205	tuple_set_s32(t, 4, comm->exec);
1206
1207	call_object(tables->comm_handler, t, "comm_table");
1208
1209	Py_DECREF(t);
1210
1211	return 0;
1212}
1213
1214static int python_export_comm_thread(struct db_export *dbe, u64 db_id,
1215				     struct comm *comm, struct thread *thread)
1216{
1217	struct tables *tables = container_of(dbe, struct tables, dbe);
1218	PyObject *t;
1219
1220	t = tuple_new(3);
1221
1222	tuple_set_d64(t, 0, db_id);
1223	tuple_set_d64(t, 1, comm->db_id);
1224	tuple_set_d64(t, 2, thread__db_id(thread));
1225
1226	call_object(tables->comm_thread_handler, t, "comm_thread_table");
1227
1228	Py_DECREF(t);
1229
1230	return 0;
1231}
1232
1233static int python_export_dso(struct db_export *dbe, struct dso *dso,
1234			     struct machine *machine)
1235{
1236	struct tables *tables = container_of(dbe, struct tables, dbe);
1237	char sbuild_id[SBUILD_ID_SIZE];
1238	PyObject *t;
1239
1240	build_id__snprintf(dso__bid(dso), sbuild_id, sizeof(sbuild_id));
1241
1242	t = tuple_new(5);
1243
1244	tuple_set_d64(t, 0, dso__db_id(dso));
1245	tuple_set_d64(t, 1, machine->db_id);
1246	tuple_set_string(t, 2, dso__short_name(dso));
1247	tuple_set_string(t, 3, dso__long_name(dso));
1248	tuple_set_string(t, 4, sbuild_id);
1249
1250	call_object(tables->dso_handler, t, "dso_table");
1251
1252	Py_DECREF(t);
1253
1254	return 0;
1255}
1256
1257static int python_export_symbol(struct db_export *dbe, struct symbol *sym,
1258				struct dso *dso)
1259{
1260	struct tables *tables = container_of(dbe, struct tables, dbe);
1261	u64 *sym_db_id = symbol__priv(sym);
1262	PyObject *t;
1263
1264	t = tuple_new(6);
1265
1266	tuple_set_d64(t, 0, *sym_db_id);
1267	tuple_set_d64(t, 1, dso__db_id(dso));
1268	tuple_set_d64(t, 2, sym->start);
1269	tuple_set_d64(t, 3, sym->end);
1270	tuple_set_s32(t, 4, sym->binding);
1271	tuple_set_string(t, 5, sym->name);
1272
1273	call_object(tables->symbol_handler, t, "symbol_table");
1274
1275	Py_DECREF(t);
1276
1277	return 0;
1278}
1279
1280static int python_export_branch_type(struct db_export *dbe, u32 branch_type,
1281				     const char *name)
1282{
1283	struct tables *tables = container_of(dbe, struct tables, dbe);
1284	PyObject *t;
1285
1286	t = tuple_new(2);
1287
1288	tuple_set_s32(t, 0, branch_type);
1289	tuple_set_string(t, 1, name);
1290
1291	call_object(tables->branch_type_handler, t, "branch_type_table");
1292
1293	Py_DECREF(t);
1294
1295	return 0;
1296}
1297
1298static void python_export_sample_table(struct db_export *dbe,
1299				       struct export_sample *es)
1300{
1301	struct tables *tables = container_of(dbe, struct tables, dbe);
1302	PyObject *t;
1303
1304	t = tuple_new(28);
1305
1306	tuple_set_d64(t, 0, es->db_id);
1307	tuple_set_d64(t, 1, es->evsel->db_id);
1308	tuple_set_d64(t, 2, maps__machine(thread__maps(es->al->thread))->db_id);
1309	tuple_set_d64(t, 3, thread__db_id(es->al->thread));
1310	tuple_set_d64(t, 4, es->comm_db_id);
1311	tuple_set_d64(t, 5, es->dso_db_id);
1312	tuple_set_d64(t, 6, es->sym_db_id);
1313	tuple_set_d64(t, 7, es->offset);
1314	tuple_set_d64(t, 8, es->sample->ip);
1315	tuple_set_d64(t, 9, es->sample->time);
1316	tuple_set_s32(t, 10, es->sample->cpu);
1317	tuple_set_d64(t, 11, es->addr_dso_db_id);
1318	tuple_set_d64(t, 12, es->addr_sym_db_id);
1319	tuple_set_d64(t, 13, es->addr_offset);
1320	tuple_set_d64(t, 14, es->sample->addr);
1321	tuple_set_d64(t, 15, es->sample->period);
1322	tuple_set_d64(t, 16, es->sample->weight);
1323	tuple_set_d64(t, 17, es->sample->transaction);
1324	tuple_set_d64(t, 18, es->sample->data_src);
1325	tuple_set_s32(t, 19, es->sample->flags & PERF_BRANCH_MASK);
1326	tuple_set_s32(t, 20, !!(es->sample->flags & PERF_IP_FLAG_IN_TX));
1327	tuple_set_d64(t, 21, es->call_path_id);
1328	tuple_set_d64(t, 22, es->sample->insn_cnt);
1329	tuple_set_d64(t, 23, es->sample->cyc_cnt);
1330	tuple_set_s32(t, 24, es->sample->flags);
1331	tuple_set_d64(t, 25, es->sample->id);
1332	tuple_set_d64(t, 26, es->sample->stream_id);
1333	tuple_set_u32(t, 27, es->sample->ins_lat);
1334
1335	call_object(tables->sample_handler, t, "sample_table");
1336
1337	Py_DECREF(t);
1338}
1339
1340static void python_export_synth(struct db_export *dbe, struct export_sample *es)
1341{
1342	struct tables *tables = container_of(dbe, struct tables, dbe);
1343	PyObject *t;
1344
1345	t = tuple_new(3);
1346
1347	tuple_set_d64(t, 0, es->db_id);
1348	tuple_set_d64(t, 1, es->evsel->core.attr.config);
1349	tuple_set_bytes(t, 2, es->sample->raw_data, es->sample->raw_size);
1350
1351	call_object(tables->synth_handler, t, "synth_data");
1352
1353	Py_DECREF(t);
1354}
1355
1356static int python_export_sample(struct db_export *dbe,
1357				struct export_sample *es)
1358{
1359	struct tables *tables = container_of(dbe, struct tables, dbe);
1360
1361	python_export_sample_table(dbe, es);
1362
1363	if (es->evsel->core.attr.type == PERF_TYPE_SYNTH && tables->synth_handler)
1364		python_export_synth(dbe, es);
1365
1366	return 0;
1367}
1368
1369static int python_export_call_path(struct db_export *dbe, struct call_path *cp)
1370{
1371	struct tables *tables = container_of(dbe, struct tables, dbe);
1372	PyObject *t;
1373	u64 parent_db_id, sym_db_id;
1374
1375	parent_db_id = cp->parent ? cp->parent->db_id : 0;
1376	sym_db_id = cp->sym ? *(u64 *)symbol__priv(cp->sym) : 0;
1377
1378	t = tuple_new(4);
1379
1380	tuple_set_d64(t, 0, cp->db_id);
1381	tuple_set_d64(t, 1, parent_db_id);
1382	tuple_set_d64(t, 2, sym_db_id);
1383	tuple_set_d64(t, 3, cp->ip);
1384
1385	call_object(tables->call_path_handler, t, "call_path_table");
1386
1387	Py_DECREF(t);
1388
1389	return 0;
1390}
1391
1392static int python_export_call_return(struct db_export *dbe,
1393				     struct call_return *cr)
1394{
1395	struct tables *tables = container_of(dbe, struct tables, dbe);
1396	u64 comm_db_id = cr->comm ? cr->comm->db_id : 0;
1397	PyObject *t;
1398
1399	t = tuple_new(14);
1400
1401	tuple_set_d64(t, 0, cr->db_id);
1402	tuple_set_d64(t, 1, thread__db_id(cr->thread));
1403	tuple_set_d64(t, 2, comm_db_id);
1404	tuple_set_d64(t, 3, cr->cp->db_id);
1405	tuple_set_d64(t, 4, cr->call_time);
1406	tuple_set_d64(t, 5, cr->return_time);
1407	tuple_set_d64(t, 6, cr->branch_count);
1408	tuple_set_d64(t, 7, cr->call_ref);
1409	tuple_set_d64(t, 8, cr->return_ref);
1410	tuple_set_d64(t, 9, cr->cp->parent->db_id);
1411	tuple_set_s32(t, 10, cr->flags);
1412	tuple_set_d64(t, 11, cr->parent_db_id);
1413	tuple_set_d64(t, 12, cr->insn_count);
1414	tuple_set_d64(t, 13, cr->cyc_count);
1415
1416	call_object(tables->call_return_handler, t, "call_return_table");
1417
1418	Py_DECREF(t);
1419
1420	return 0;
1421}
1422
1423static int python_export_context_switch(struct db_export *dbe, u64 db_id,
1424					struct machine *machine,
1425					struct perf_sample *sample,
1426					u64 th_out_id, u64 comm_out_id,
1427					u64 th_in_id, u64 comm_in_id, int flags)
1428{
1429	struct tables *tables = container_of(dbe, struct tables, dbe);
1430	PyObject *t;
1431
1432	t = tuple_new(9);
1433
1434	tuple_set_d64(t, 0, db_id);
1435	tuple_set_d64(t, 1, machine->db_id);
1436	tuple_set_d64(t, 2, sample->time);
1437	tuple_set_s32(t, 3, sample->cpu);
1438	tuple_set_d64(t, 4, th_out_id);
1439	tuple_set_d64(t, 5, comm_out_id);
1440	tuple_set_d64(t, 6, th_in_id);
1441	tuple_set_d64(t, 7, comm_in_id);
1442	tuple_set_s32(t, 8, flags);
1443
1444	call_object(tables->context_switch_handler, t, "context_switch");
1445
1446	Py_DECREF(t);
1447
1448	return 0;
1449}
1450
1451static int python_process_call_return(struct call_return *cr, u64 *parent_db_id,
1452				      void *data)
1453{
1454	struct db_export *dbe = data;
1455
1456	return db_export__call_return(dbe, cr, parent_db_id);
1457}
1458
1459static void python_process_general_event(struct perf_sample *sample,
1460					 struct evsel *evsel,
1461					 struct addr_location *al,
1462					 struct addr_location *addr_al)
1463{
1464	PyObject *handler, *t, *dict, *callchain;
1465	static char handler_name[64];
1466	unsigned n = 0;
1467
1468	snprintf(handler_name, sizeof(handler_name), "%s", "process_event");
1469
1470	handler = get_handler(handler_name);
1471	if (!handler)
1472		return;
1473
1474	/*
1475	 * Use the MAX_FIELDS to make the function expandable, though
1476	 * currently there is only one item for the tuple.
1477	 */
1478	t = PyTuple_New(MAX_FIELDS);
1479	if (!t)
1480		Py_FatalError("couldn't create Python tuple");
1481
1482	/* ip unwinding */
1483	callchain = python_process_callchain(sample, evsel, al);
1484	dict = get_perf_sample_dict(sample, evsel, al, addr_al, callchain);
1485
1486	PyTuple_SetItem(t, n++, dict);
1487	if (_PyTuple_Resize(&t, n) == -1)
1488		Py_FatalError("error resizing Python tuple");
1489
1490	call_object(handler, t, handler_name);
1491
1492	Py_DECREF(t);
1493}
1494
1495static void python_process_event(union perf_event *event,
1496				 struct perf_sample *sample,
1497				 struct evsel *evsel,
1498				 struct addr_location *al,
1499				 struct addr_location *addr_al)
1500{
1501	struct tables *tables = &tables_global;
1502
1503	scripting_context__update(scripting_context, event, sample, evsel, al, addr_al);
1504
1505	switch (evsel->core.attr.type) {
1506	case PERF_TYPE_TRACEPOINT:
1507		python_process_tracepoint(sample, evsel, al, addr_al);
1508		break;
1509	/* Reserve for future process_hw/sw/raw APIs */
1510	default:
1511		if (tables->db_export_mode)
1512			db_export__sample(&tables->dbe, event, sample, evsel, al, addr_al);
1513		else
1514			python_process_general_event(sample, evsel, al, addr_al);
1515	}
1516}
1517
1518static void python_process_throttle(union perf_event *event,
1519				    struct perf_sample *sample,
1520				    struct machine *machine)
1521{
1522	const char *handler_name;
1523	PyObject *handler, *t;
1524
1525	if (event->header.type == PERF_RECORD_THROTTLE)
1526		handler_name = "throttle";
1527	else
1528		handler_name = "unthrottle";
1529	handler = get_handler(handler_name);
1530	if (!handler)
1531		return;
1532
1533	t = tuple_new(6);
1534	if (!t)
1535		return;
1536
1537	tuple_set_u64(t, 0, event->throttle.time);
1538	tuple_set_u64(t, 1, event->throttle.id);
1539	tuple_set_u64(t, 2, event->throttle.stream_id);
1540	tuple_set_s32(t, 3, sample->cpu);
1541	tuple_set_s32(t, 4, sample->pid);
1542	tuple_set_s32(t, 5, sample->tid);
1543
1544	call_object(handler, t, handler_name);
1545
1546	Py_DECREF(t);
1547}
1548
1549static void python_do_process_switch(union perf_event *event,
1550				     struct perf_sample *sample,
1551				     struct machine *machine)
1552{
1553	const char *handler_name = "context_switch";
1554	bool out = event->header.misc & PERF_RECORD_MISC_SWITCH_OUT;
1555	bool out_preempt = out && (event->header.misc & PERF_RECORD_MISC_SWITCH_OUT_PREEMPT);
1556	pid_t np_pid = -1, np_tid = -1;
1557	PyObject *handler, *t;
1558
1559	handler = get_handler(handler_name);
1560	if (!handler)
1561		return;
1562
1563	if (event->header.type == PERF_RECORD_SWITCH_CPU_WIDE) {
1564		np_pid = event->context_switch.next_prev_pid;
1565		np_tid = event->context_switch.next_prev_tid;
1566	}
1567
1568	t = tuple_new(11);
1569	if (!t)
1570		return;
1571
1572	tuple_set_u64(t, 0, sample->time);
1573	tuple_set_s32(t, 1, sample->cpu);
1574	tuple_set_s32(t, 2, sample->pid);
1575	tuple_set_s32(t, 3, sample->tid);
1576	tuple_set_s32(t, 4, np_pid);
1577	tuple_set_s32(t, 5, np_tid);
1578	tuple_set_s32(t, 6, machine->pid);
1579	tuple_set_bool(t, 7, out);
1580	tuple_set_bool(t, 8, out_preempt);
1581	tuple_set_s32(t, 9, sample->machine_pid);
1582	tuple_set_s32(t, 10, sample->vcpu);
1583
1584	call_object(handler, t, handler_name);
1585
1586	Py_DECREF(t);
1587}
1588
1589static void python_process_switch(union perf_event *event,
1590				  struct perf_sample *sample,
1591				  struct machine *machine)
1592{
1593	struct tables *tables = &tables_global;
1594
1595	if (tables->db_export_mode)
1596		db_export__switch(&tables->dbe, event, sample, machine);
1597	else
1598		python_do_process_switch(event, sample, machine);
1599}
1600
1601static void python_process_auxtrace_error(struct perf_session *session __maybe_unused,
1602					  union perf_event *event)
1603{
1604	struct perf_record_auxtrace_error *e = &event->auxtrace_error;
1605	u8 cpumode = e->header.misc & PERF_RECORD_MISC_CPUMODE_MASK;
1606	const char *handler_name = "auxtrace_error";
1607	unsigned long long tm = e->time;
1608	const char *msg = e->msg;
1609	PyObject *handler, *t;
1610
1611	handler = get_handler(handler_name);
1612	if (!handler)
1613		return;
1614
1615	if (!e->fmt) {
1616		tm = 0;
1617		msg = (const char *)&e->time;
1618	}
1619
1620	t = tuple_new(11);
1621
1622	tuple_set_u32(t, 0, e->type);
1623	tuple_set_u32(t, 1, e->code);
1624	tuple_set_s32(t, 2, e->cpu);
1625	tuple_set_s32(t, 3, e->pid);
1626	tuple_set_s32(t, 4, e->tid);
1627	tuple_set_u64(t, 5, e->ip);
1628	tuple_set_u64(t, 6, tm);
1629	tuple_set_string(t, 7, msg);
1630	tuple_set_u32(t, 8, cpumode);
1631	tuple_set_s32(t, 9, e->machine_pid);
1632	tuple_set_s32(t, 10, e->vcpu);
1633
1634	call_object(handler, t, handler_name);
1635
1636	Py_DECREF(t);
1637}
1638
1639static void get_handler_name(char *str, size_t size,
1640			     struct evsel *evsel)
1641{
1642	char *p = str;
1643
1644	scnprintf(str, size, "stat__%s", evsel__name(evsel));
1645
1646	while ((p = strchr(p, ':'))) {
1647		*p = '_';
1648		p++;
1649	}
1650}
1651
1652static void
1653process_stat(struct evsel *counter, struct perf_cpu cpu, int thread, u64 tstamp,
1654	     struct perf_counts_values *count)
1655{
1656	PyObject *handler, *t;
1657	static char handler_name[256];
1658	int n = 0;
1659
1660	t = PyTuple_New(MAX_FIELDS);
1661	if (!t)
1662		Py_FatalError("couldn't create Python tuple");
1663
1664	get_handler_name(handler_name, sizeof(handler_name),
1665			 counter);
1666
1667	handler = get_handler(handler_name);
1668	if (!handler) {
1669		pr_debug("can't find python handler %s\n", handler_name);
1670		return;
1671	}
1672
1673	PyTuple_SetItem(t, n++, _PyLong_FromLong(cpu.cpu));
1674	PyTuple_SetItem(t, n++, _PyLong_FromLong(thread));
1675
1676	tuple_set_u64(t, n++, tstamp);
1677	tuple_set_u64(t, n++, count->val);
1678	tuple_set_u64(t, n++, count->ena);
1679	tuple_set_u64(t, n++, count->run);
1680
1681	if (_PyTuple_Resize(&t, n) == -1)
1682		Py_FatalError("error resizing Python tuple");
1683
1684	call_object(handler, t, handler_name);
1685
1686	Py_DECREF(t);
1687}
1688
1689static void python_process_stat(struct perf_stat_config *config,
1690				struct evsel *counter, u64 tstamp)
1691{
1692	struct perf_thread_map *threads = counter->core.threads;
1693	struct perf_cpu_map *cpus = counter->core.cpus;
1694
1695	for (int thread = 0; thread < perf_thread_map__nr(threads); thread++) {
1696		int idx;
1697		struct perf_cpu cpu;
1698
1699		perf_cpu_map__for_each_cpu(cpu, idx, cpus) {
1700			process_stat(counter, cpu,
1701				     perf_thread_map__pid(threads, thread), tstamp,
1702				     perf_counts(counter->counts, idx, thread));
1703		}
1704	}
1705}
1706
1707static void python_process_stat_interval(u64 tstamp)
1708{
1709	PyObject *handler, *t;
1710	static const char handler_name[] = "stat__interval";
1711	int n = 0;
1712
1713	t = PyTuple_New(MAX_FIELDS);
1714	if (!t)
1715		Py_FatalError("couldn't create Python tuple");
1716
1717	handler = get_handler(handler_name);
1718	if (!handler) {
1719		pr_debug("can't find python handler %s\n", handler_name);
1720		return;
1721	}
1722
1723	tuple_set_u64(t, n++, tstamp);
1724
1725	if (_PyTuple_Resize(&t, n) == -1)
1726		Py_FatalError("error resizing Python tuple");
1727
1728	call_object(handler, t, handler_name);
1729
1730	Py_DECREF(t);
1731}
1732
1733static int perf_script_context_init(void)
1734{
1735	PyObject *perf_script_context;
1736	PyObject *perf_trace_context;
1737	PyObject *dict;
1738	int ret;
1739
1740	perf_trace_context = PyImport_AddModule("perf_trace_context");
1741	if (!perf_trace_context)
1742		return -1;
1743	dict = PyModule_GetDict(perf_trace_context);
1744	if (!dict)
1745		return -1;
1746
1747	perf_script_context = _PyCapsule_New(scripting_context, NULL, NULL);
1748	if (!perf_script_context)
1749		return -1;
1750
1751	ret = PyDict_SetItemString(dict, "perf_script_context", perf_script_context);
1752	if (!ret)
1753		ret = PyDict_SetItemString(main_dict, "perf_script_context", perf_script_context);
1754	Py_DECREF(perf_script_context);
1755	return ret;
1756}
1757
1758static int run_start_sub(void)
1759{
1760	main_module = PyImport_AddModule("__main__");
1761	if (main_module == NULL)
1762		return -1;
1763	Py_INCREF(main_module);
1764
1765	main_dict = PyModule_GetDict(main_module);
1766	if (main_dict == NULL)
1767		goto error;
1768	Py_INCREF(main_dict);
1769
1770	if (perf_script_context_init())
1771		goto error;
1772
1773	try_call_object("trace_begin", NULL);
1774
1775	return 0;
1776
1777error:
1778	Py_XDECREF(main_dict);
1779	Py_XDECREF(main_module);
1780	return -1;
1781}
1782
1783#define SET_TABLE_HANDLER_(name, handler_name, table_name) do {		\
1784	tables->handler_name = get_handler(#table_name);		\
1785	if (tables->handler_name)					\
1786		tables->dbe.export_ ## name = python_export_ ## name;	\
1787} while (0)
1788
1789#define SET_TABLE_HANDLER(name) \
1790	SET_TABLE_HANDLER_(name, name ## _handler, name ## _table)
1791
1792static void set_table_handlers(struct tables *tables)
1793{
1794	const char *perf_db_export_mode = "perf_db_export_mode";
1795	const char *perf_db_export_calls = "perf_db_export_calls";
1796	const char *perf_db_export_callchains = "perf_db_export_callchains";
1797	PyObject *db_export_mode, *db_export_calls, *db_export_callchains;
1798	bool export_calls = false;
1799	bool export_callchains = false;
1800	int ret;
1801
1802	memset(tables, 0, sizeof(struct tables));
1803	if (db_export__init(&tables->dbe))
1804		Py_FatalError("failed to initialize export");
1805
1806	db_export_mode = PyDict_GetItemString(main_dict, perf_db_export_mode);
1807	if (!db_export_mode)
1808		return;
1809
1810	ret = PyObject_IsTrue(db_export_mode);
1811	if (ret == -1)
1812		handler_call_die(perf_db_export_mode);
1813	if (!ret)
1814		return;
1815
1816	/* handle export calls */
1817	tables->dbe.crp = NULL;
1818	db_export_calls = PyDict_GetItemString(main_dict, perf_db_export_calls);
1819	if (db_export_calls) {
1820		ret = PyObject_IsTrue(db_export_calls);
1821		if (ret == -1)
1822			handler_call_die(perf_db_export_calls);
1823		export_calls = !!ret;
1824	}
1825
1826	if (export_calls) {
1827		tables->dbe.crp =
1828			call_return_processor__new(python_process_call_return,
1829						   &tables->dbe);
1830		if (!tables->dbe.crp)
1831			Py_FatalError("failed to create calls processor");
1832	}
1833
1834	/* handle export callchains */
1835	tables->dbe.cpr = NULL;
1836	db_export_callchains = PyDict_GetItemString(main_dict,
1837						    perf_db_export_callchains);
1838	if (db_export_callchains) {
1839		ret = PyObject_IsTrue(db_export_callchains);
1840		if (ret == -1)
1841			handler_call_die(perf_db_export_callchains);
1842		export_callchains = !!ret;
1843	}
1844
1845	if (export_callchains) {
1846		/*
1847		 * Attempt to use the call path root from the call return
1848		 * processor, if the call return processor is in use. Otherwise,
1849		 * we allocate a new call path root. This prevents exporting
1850		 * duplicate call path ids when both are in use simultaneously.
1851		 */
1852		if (tables->dbe.crp)
1853			tables->dbe.cpr = tables->dbe.crp->cpr;
1854		else
1855			tables->dbe.cpr = call_path_root__new();
1856
1857		if (!tables->dbe.cpr)
1858			Py_FatalError("failed to create call path root");
1859	}
1860
1861	tables->db_export_mode = true;
1862	/*
1863	 * Reserve per symbol space for symbol->db_id via symbol__priv()
1864	 */
1865	symbol_conf.priv_size = sizeof(u64);
1866
1867	SET_TABLE_HANDLER(evsel);
1868	SET_TABLE_HANDLER(machine);
1869	SET_TABLE_HANDLER(thread);
1870	SET_TABLE_HANDLER(comm);
1871	SET_TABLE_HANDLER(comm_thread);
1872	SET_TABLE_HANDLER(dso);
1873	SET_TABLE_HANDLER(symbol);
1874	SET_TABLE_HANDLER(branch_type);
1875	SET_TABLE_HANDLER(sample);
1876	SET_TABLE_HANDLER(call_path);
1877	SET_TABLE_HANDLER(call_return);
1878	SET_TABLE_HANDLER(context_switch);
1879
1880	/*
1881	 * Synthesized events are samples but with architecture-specific data
1882	 * stored in sample->raw_data. They are exported via
1883	 * python_export_sample() and consequently do not need a separate export
1884	 * callback.
1885	 */
1886	tables->synth_handler = get_handler("synth_data");
1887}
1888
1889static void _free_command_line(wchar_t **command_line, int num)
1890{
1891	int i;
1892	for (i = 0; i < num; i++)
1893		PyMem_RawFree(command_line[i]);
1894	free(command_line);
1895}
1896
1897
1898/*
1899 * Start trace script
1900 */
1901static int python_start_script(const char *script, int argc, const char **argv,
1902			       struct perf_session *session)
1903{
1904	struct tables *tables = &tables_global;
1905	wchar_t **command_line;
1906	char buf[PATH_MAX];
1907	int i, err = 0;
1908	FILE *fp;
1909
1910	scripting_context->session = session;
1911	command_line = malloc((argc + 1) * sizeof(wchar_t *));
1912	if (!command_line)
1913		return -1;
1914
1915	command_line[0] = Py_DecodeLocale(script, NULL);
1916	for (i = 1; i < argc + 1; i++)
1917		command_line[i] = Py_DecodeLocale(argv[i - 1], NULL);
1918	PyImport_AppendInittab("perf_trace_context", PyInit_perf_trace_context);
1919	Py_Initialize();
1920
1921	PySys_SetArgv(argc + 1, command_line);
1922
1923	fp = fopen(script, "r");
1924	if (!fp) {
1925		sprintf(buf, "Can't open python script \"%s\"", script);
1926		perror(buf);
1927		err = -1;
1928		goto error;
1929	}
1930
1931	err = PyRun_SimpleFile(fp, script);
1932	if (err) {
1933		fprintf(stderr, "Error running python script %s\n", script);
1934		goto error;
1935	}
1936
1937	err = run_start_sub();
1938	if (err) {
1939		fprintf(stderr, "Error starting python script %s\n", script);
1940		goto error;
1941	}
1942
1943	set_table_handlers(tables);
1944
1945	if (tables->db_export_mode) {
1946		err = db_export__branch_types(&tables->dbe);
1947		if (err)
1948			goto error;
1949	}
1950
1951	_free_command_line(command_line, argc + 1);
1952
1953	return err;
1954error:
1955	Py_Finalize();
1956	_free_command_line(command_line, argc + 1);
1957
1958	return err;
1959}
1960
1961static int python_flush_script(void)
1962{
1963	return 0;
1964}
1965
1966/*
1967 * Stop trace script
1968 */
1969static int python_stop_script(void)
1970{
1971	struct tables *tables = &tables_global;
1972
1973	try_call_object("trace_end", NULL);
1974
1975	db_export__exit(&tables->dbe);
1976
1977	Py_XDECREF(main_dict);
1978	Py_XDECREF(main_module);
1979	Py_Finalize();
1980
1981	return 0;
1982}
1983
1984#ifdef HAVE_LIBTRACEEVENT
1985static int python_generate_script(struct tep_handle *pevent, const char *outfile)
1986{
1987	int i, not_first, count, nr_events;
1988	struct tep_event **all_events;
1989	struct tep_event *event = NULL;
1990	struct tep_format_field *f;
1991	char fname[PATH_MAX];
1992	FILE *ofp;
1993
1994	sprintf(fname, "%s.py", outfile);
1995	ofp = fopen(fname, "w");
1996	if (ofp == NULL) {
1997		fprintf(stderr, "couldn't open %s\n", fname);
1998		return -1;
1999	}
2000	fprintf(ofp, "# perf script event handlers, "
2001		"generated by perf script -g python\n");
2002
2003	fprintf(ofp, "# Licensed under the terms of the GNU GPL"
2004		" License version 2\n\n");
2005
2006	fprintf(ofp, "# The common_* event handler fields are the most useful "
2007		"fields common to\n");
2008
2009	fprintf(ofp, "# all events.  They don't necessarily correspond to "
2010		"the 'common_*' fields\n");
2011
2012	fprintf(ofp, "# in the format files.  Those fields not available as "
2013		"handler params can\n");
2014
2015	fprintf(ofp, "# be retrieved using Python functions of the form "
2016		"common_*(context).\n");
2017
2018	fprintf(ofp, "# See the perf-script-python Documentation for the list "
2019		"of available functions.\n\n");
2020
2021	fprintf(ofp, "from __future__ import print_function\n\n");
2022	fprintf(ofp, "import os\n");
2023	fprintf(ofp, "import sys\n\n");
2024
2025	fprintf(ofp, "sys.path.append(os.environ['PERF_EXEC_PATH'] + \\\n");
2026	fprintf(ofp, "\t'/scripts/python/Perf-Trace-Util/lib/Perf/Trace')\n");
2027	fprintf(ofp, "\nfrom perf_trace_context import *\n");
2028	fprintf(ofp, "from Core import *\n\n\n");
2029
2030	fprintf(ofp, "def trace_begin():\n");
2031	fprintf(ofp, "\tprint(\"in trace_begin\")\n\n");
2032
2033	fprintf(ofp, "def trace_end():\n");
2034	fprintf(ofp, "\tprint(\"in trace_end\")\n\n");
2035
2036	nr_events = tep_get_events_count(pevent);
2037	all_events = tep_list_events(pevent, TEP_EVENT_SORT_ID);
2038
2039	for (i = 0; all_events && i < nr_events; i++) {
2040		event = all_events[i];
2041		fprintf(ofp, "def %s__%s(", event->system, event->name);
2042		fprintf(ofp, "event_name, ");
2043		fprintf(ofp, "context, ");
2044		fprintf(ofp, "common_cpu,\n");
2045		fprintf(ofp, "\tcommon_secs, ");
2046		fprintf(ofp, "common_nsecs, ");
2047		fprintf(ofp, "common_pid, ");
2048		fprintf(ofp, "common_comm,\n\t");
2049		fprintf(ofp, "common_callchain, ");
2050
2051		not_first = 0;
2052		count = 0;
2053
2054		for (f = event->format.fields; f; f = f->next) {
2055			if (not_first++)
2056				fprintf(ofp, ", ");
2057			if (++count % 5 == 0)
2058				fprintf(ofp, "\n\t");
2059
2060			fprintf(ofp, "%s", f->name);
2061		}
2062		if (not_first++)
2063			fprintf(ofp, ", ");
2064		if (++count % 5 == 0)
2065			fprintf(ofp, "\n\t\t");
2066		fprintf(ofp, "perf_sample_dict");
2067
2068		fprintf(ofp, "):\n");
2069
2070		fprintf(ofp, "\t\tprint_header(event_name, common_cpu, "
2071			"common_secs, common_nsecs,\n\t\t\t"
2072			"common_pid, common_comm)\n\n");
2073
2074		fprintf(ofp, "\t\tprint(\"");
2075
2076		not_first = 0;
2077		count = 0;
2078
2079		for (f = event->format.fields; f; f = f->next) {
2080			if (not_first++)
2081				fprintf(ofp, ", ");
2082			if (count && count % 3 == 0) {
2083				fprintf(ofp, "\" \\\n\t\t\"");
2084			}
2085			count++;
2086
2087			fprintf(ofp, "%s=", f->name);
2088			if (f->flags & TEP_FIELD_IS_STRING ||
2089			    f->flags & TEP_FIELD_IS_FLAG ||
2090			    f->flags & TEP_FIELD_IS_ARRAY ||
2091			    f->flags & TEP_FIELD_IS_SYMBOLIC)
2092				fprintf(ofp, "%%s");
2093			else if (f->flags & TEP_FIELD_IS_SIGNED)
2094				fprintf(ofp, "%%d");
2095			else
2096				fprintf(ofp, "%%u");
2097		}
2098
2099		fprintf(ofp, "\" %% \\\n\t\t(");
2100
2101		not_first = 0;
2102		count = 0;
2103
2104		for (f = event->format.fields; f; f = f->next) {
2105			if (not_first++)
2106				fprintf(ofp, ", ");
2107
2108			if (++count % 5 == 0)
2109				fprintf(ofp, "\n\t\t");
2110
2111			if (f->flags & TEP_FIELD_IS_FLAG) {
2112				if ((count - 1) % 5 != 0) {
2113					fprintf(ofp, "\n\t\t");
2114					count = 4;
2115				}
2116				fprintf(ofp, "flag_str(\"");
2117				fprintf(ofp, "%s__%s\", ", event->system,
2118					event->name);
2119				fprintf(ofp, "\"%s\", %s)", f->name,
2120					f->name);
2121			} else if (f->flags & TEP_FIELD_IS_SYMBOLIC) {
2122				if ((count - 1) % 5 != 0) {
2123					fprintf(ofp, "\n\t\t");
2124					count = 4;
2125				}
2126				fprintf(ofp, "symbol_str(\"");
2127				fprintf(ofp, "%s__%s\", ", event->system,
2128					event->name);
2129				fprintf(ofp, "\"%s\", %s)", f->name,
2130					f->name);
2131			} else
2132				fprintf(ofp, "%s", f->name);
2133		}
2134
2135		fprintf(ofp, "))\n\n");
2136
2137		fprintf(ofp, "\t\tprint('Sample: {'+"
2138			"get_dict_as_string(perf_sample_dict['sample'], ', ')+'}')\n\n");
2139
2140		fprintf(ofp, "\t\tfor node in common_callchain:");
2141		fprintf(ofp, "\n\t\t\tif 'sym' in node:");
2142		fprintf(ofp, "\n\t\t\t\tprint(\"\t[%%x] %%s%%s%%s%%s\" %% (");
2143		fprintf(ofp, "\n\t\t\t\t\tnode['ip'], node['sym']['name'],");
2144		fprintf(ofp, "\n\t\t\t\t\t\"+0x{:x}\".format(node['sym_off']) if 'sym_off' in node else \"\",");
2145		fprintf(ofp, "\n\t\t\t\t\t\" ({})\".format(node['dso'])  if 'dso' in node else \"\",");
2146		fprintf(ofp, "\n\t\t\t\t\t\" \" + node['sym_srcline'] if 'sym_srcline' in node else \"\"))");
2147		fprintf(ofp, "\n\t\t\telse:");
2148		fprintf(ofp, "\n\t\t\t\tprint(\"\t[%%x]\" %% (node['ip']))\n\n");
2149		fprintf(ofp, "\t\tprint()\n\n");
2150
2151	}
2152
2153	fprintf(ofp, "def trace_unhandled(event_name, context, "
2154		"event_fields_dict, perf_sample_dict):\n");
2155
2156	fprintf(ofp, "\t\tprint(get_dict_as_string(event_fields_dict))\n");
2157	fprintf(ofp, "\t\tprint('Sample: {'+"
2158		"get_dict_as_string(perf_sample_dict['sample'], ', ')+'}')\n\n");
2159
2160	fprintf(ofp, "def print_header("
2161		"event_name, cpu, secs, nsecs, pid, comm):\n"
2162		"\tprint(\"%%-20s %%5u %%05u.%%09u %%8u %%-20s \" %% \\\n\t"
2163		"(event_name, cpu, secs, nsecs, pid, comm), end=\"\")\n\n");
2164
2165	fprintf(ofp, "def get_dict_as_string(a_dict, delimiter=' '):\n"
2166		"\treturn delimiter.join"
2167		"(['%%s=%%s'%%(k,str(v))for k,v in sorted(a_dict.items())])\n");
2168
2169	fclose(ofp);
2170
2171	fprintf(stderr, "generated Python script: %s\n", fname);
2172
2173	return 0;
2174}
2175#else
2176static int python_generate_script(struct tep_handle *pevent __maybe_unused,
2177				  const char *outfile __maybe_unused)
2178{
2179	fprintf(stderr, "Generating Python perf-script is not supported."
2180		"  Install libtraceevent and rebuild perf to enable it.\n"
2181		"For example:\n  # apt install libtraceevent-dev (ubuntu)"
2182		"\n  # yum install libtraceevent-devel (Fedora)"
2183		"\n  etc.\n");
2184	return -1;
2185}
2186#endif
2187
2188struct scripting_ops python_scripting_ops = {
2189	.name			= "Python",
2190	.dirname		= "python",
2191	.start_script		= python_start_script,
2192	.flush_script		= python_flush_script,
2193	.stop_script		= python_stop_script,
2194	.process_event		= python_process_event,
2195	.process_switch		= python_process_switch,
2196	.process_auxtrace_error	= python_process_auxtrace_error,
2197	.process_stat		= python_process_stat,
2198	.process_stat_interval	= python_process_stat_interval,
2199	.process_throttle	= python_process_throttle,
2200	.generate_script	= python_generate_script,
2201};