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