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 int 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 0;
 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         return printed;
 709 }
 710
 711 static void set_regs_in_dict(PyObject *dict,
 712                              struct perf_sample *sample,
 713                              struct evsel *evsel)
 714 {
 715         struct perf_event_attr *attr = &evsel->core.attr;
 716         char bf[512];
 717
 718         regs_map(&sample->intr_regs, attr->sample_regs_intr, bf, sizeof(bf));
 719
 720         pydict_set_item_string_decref(dict, "iregs",
 721                         _PyUnicode_FromString(bf));
 722
 723         regs_map(&sample->user_regs, attr->sample_regs_user, bf, sizeof(bf));
 724
 725         pydict_set_item_string_decref(dict, "uregs",
 726                         _PyUnicode_FromString(bf));
 727 }
 728
 729 static PyObject *get_perf_sample_dict(struct perf_sample *sample,
 730                                          struct evsel *evsel,
 731                                          struct addr_location *al,
 732                                          PyObject *callchain)
 733 {
 734         PyObject *dict, *dict_sample, *brstack, *brstacksym;
 735
 736         dict = PyDict_New();
 737         if (!dict)
 738                 Py_FatalError("couldn't create Python dictionary");
 739
 740         dict_sample = PyDict_New();
 741         if (!dict_sample)
 742                 Py_FatalError("couldn't create Python dictionary");
 743
 744         pydict_set_item_string_decref(dict, "ev_name", _PyUnicode_FromString(evsel__name(evsel)));
 745         pydict_set_item_string_decref(dict, "attr", _PyBytes_FromStringAndSize((const char *)&evsel->core.attr, sizeof(evsel->core.attr)));
 746
 747         pydict_set_item_string_decref(dict_sample, "pid",
 748                         _PyLong_FromLong(sample->pid));
 749         pydict_set_item_string_decref(dict_sample, "tid",
 750                         _PyLong_FromLong(sample->tid));
 751         pydict_set_item_string_decref(dict_sample, "cpu",
 752                         _PyLong_FromLong(sample->cpu));
 753         pydict_set_item_string_decref(dict_sample, "ip",
 754                         PyLong_FromUnsignedLongLong(sample->ip));
 755         pydict_set_item_string_decref(dict_sample, "time",
 756                         PyLong_FromUnsignedLongLong(sample->time));
 757         pydict_set_item_string_decref(dict_sample, "period",
 758                         PyLong_FromUnsignedLongLong(sample->period));
 759         pydict_set_item_string_decref(dict_sample, "phys_addr",
 760                         PyLong_FromUnsignedLongLong(sample->phys_addr));
 761         pydict_set_item_string_decref(dict_sample, "addr",
 762                         PyLong_FromUnsignedLongLong(sample->addr));
 763         set_sample_read_in_dict(dict_sample, sample, evsel);
 764         pydict_set_item_string_decref(dict_sample, "weight",
 765                         PyLong_FromUnsignedLongLong(sample->weight));
 766         pydict_set_item_string_decref(dict_sample, "transaction",
 767                         PyLong_FromUnsignedLongLong(sample->transaction));
 768         set_sample_datasrc_in_dict(dict_sample, sample);
 769         pydict_set_item_string_decref(dict, "sample", dict_sample);
 770
 771         pydict_set_item_string_decref(dict, "raw_buf", _PyBytes_FromStringAndSize(
 772                         (const char *)sample->raw_data, sample->raw_size));
 773         pydict_set_item_string_decref(dict, "comm",
 774                         _PyUnicode_FromString(thread__comm_str(al->thread)));
 775         if (al->map) {
 776                 pydict_set_item_string_decref(dict, "dso",
 777                         _PyUnicode_FromString(al->map->dso->name));
 778         }
 779         if (al->sym) {
 780                 pydict_set_item_string_decref(dict, "symbol",
 781                         _PyUnicode_FromString(al->sym->name));
 782         }
 783
 784         pydict_set_item_string_decref(dict, "callchain", callchain);
 785
 786         brstack = python_process_brstack(sample, al->thread);
 787         pydict_set_item_string_decref(dict, "brstack", brstack);
 788
 789         brstacksym = python_process_brstacksym(sample, al->thread);
 790         pydict_set_item_string_decref(dict, "brstacksym", brstacksym);
 791
 792         set_regs_in_dict(dict, sample, evsel);
 793
 794         return dict;
 795 }
 796
 797 static void python_process_tracepoint(struct perf_sample *sample,
 798                                       struct evsel *evsel,
 799                                       struct addr_location *al)
 800 {
 801         struct tep_event *event = evsel->tp_format;
 802         PyObject *handler, *context, *t, *obj = NULL, *callchain;
 803         PyObject *dict = NULL, *all_entries_dict = NULL;
 804         static char handler_name[256];
 805         struct tep_format_field *field;
 806         unsigned long s, ns;
 807         unsigned n = 0;
 808         int pid;
 809         int cpu = sample->cpu;
 810         void *data = sample->raw_data;
 811         unsigned long long nsecs = sample->time;
 812         const char *comm = thread__comm_str(al->thread);
 813         const char *default_handler_name = "trace_unhandled";
 814
 815         if (!event) {
 816                 snprintf(handler_name, sizeof(handler_name),
 817                          "ug! no event found for type %" PRIu64, (u64)evsel->core.attr.config);
 818                 Py_FatalError(handler_name);
 819         }
 820
 821         pid = raw_field_value(event, "common_pid", data);
 822
 823         sprintf(handler_name, "%s__%s", event->system, event->name);
 824
 825         if (!test_and_set_bit(event->id, events_defined))
 826                 define_event_symbols(event, handler_name, event->print_fmt.args);
 827
 828         handler = get_handler(handler_name);
 829         if (!handler) {
 830                 handler = get_handler(default_handler_name);
 831                 if (!handler)
 832                         return;
 833                 dict = PyDict_New();
 834                 if (!dict)
 835                         Py_FatalError("couldn't create Python dict");
 836         }
 837
 838         t = PyTuple_New(MAX_FIELDS);
 839         if (!t)
 840                 Py_FatalError("couldn't create Python tuple");
 841
 842
 843         s = nsecs / NSEC_PER_SEC;
 844         ns = nsecs - s * NSEC_PER_SEC;
 845
 846         scripting_context->event_data = data;
 847         scripting_context->pevent = evsel->tp_format->tep;
 848
 849         context = _PyCapsule_New(scripting_context, NULL, NULL);
 850
 851         PyTuple_SetItem(t, n++, _PyUnicode_FromString(handler_name));
 852         PyTuple_SetItem(t, n++, context);
 853
 854         /* ip unwinding */
 855         callchain = python_process_callchain(sample, evsel, al);
 856         /* Need an additional reference for the perf_sample dict */
 857         Py_INCREF(callchain);
 858
 859         if (!dict) {
 860                 PyTuple_SetItem(t, n++, _PyLong_FromLong(cpu));
 861                 PyTuple_SetItem(t, n++, _PyLong_FromLong(s));
 862                 PyTuple_SetItem(t, n++, _PyLong_FromLong(ns));
 863                 PyTuple_SetItem(t, n++, _PyLong_FromLong(pid));
 864                 PyTuple_SetItem(t, n++, _PyUnicode_FromString(comm));
 865                 PyTuple_SetItem(t, n++, callchain);
 866         } else {
 867                 pydict_set_item_string_decref(dict, "common_cpu", _PyLong_FromLong(cpu));
 868                 pydict_set_item_string_decref(dict, "common_s", _PyLong_FromLong(s));
 869                 pydict_set_item_string_decref(dict, "common_ns", _PyLong_FromLong(ns));
 870                 pydict_set_item_string_decref(dict, "common_pid", _PyLong_FromLong(pid));
 871                 pydict_set_item_string_decref(dict, "common_comm", _PyUnicode_FromString(comm));
 872                 pydict_set_item_string_decref(dict, "common_callchain", callchain);
 873         }
 874         for (field = event->format.fields; field; field = field->next) {
 875                 unsigned int offset, len;
 876                 unsigned long long val;
 877
 878                 if (field->flags & TEP_FIELD_IS_ARRAY) {
 879                         offset = field->offset;
 880                         len    = field->size;
 881                         if (field->flags & TEP_FIELD_IS_DYNAMIC) {
 882                                 val     = tep_read_number(scripting_context->pevent,
 883                                                           data + offset, len);
 884                                 offset  = val;
 885                                 len     = offset >> 16;
 886                                 offset &= 0xffff;
 887                         }
 888                         if (field->flags & TEP_FIELD_IS_STRING &&
 889                             is_printable_array(data + offset, len)) {
 890                                 obj = _PyUnicode_FromString((char *) data + offset);
 891                         } else {
 892                                 obj = PyByteArray_FromStringAndSize((const char *) data + offset, len);
 893                                 field->flags &= ~TEP_FIELD_IS_STRING;
 894                         }
 895                 } else { /* FIELD_IS_NUMERIC */
 896                         obj = get_field_numeric_entry(event, field, data);
 897                 }
 898                 if (!dict)
 899                         PyTuple_SetItem(t, n++, obj);
 900                 else
 901                         pydict_set_item_string_decref(dict, field->name, obj);
 902
 903         }
 904
 905         if (dict)
 906                 PyTuple_SetItem(t, n++, dict);
 907
 908         if (get_argument_count(handler) == (int) n + 1) {
 909                 all_entries_dict = get_perf_sample_dict(sample, evsel, al,
 910                         callchain);
 911                 PyTuple_SetItem(t, n++, all_entries_dict);
 912         } else {
 913                 Py_DECREF(callchain);
 914         }
 915
 916         if (_PyTuple_Resize(&t, n) == -1)
 917                 Py_FatalError("error resizing Python tuple");
 918
 919         if (!dict)
 920                 call_object(handler, t, handler_name);
 921         else
 922                 call_object(handler, t, default_handler_name);
 923
 924         Py_DECREF(t);
 925 }
 926
 927 static PyObject *tuple_new(unsigned int sz)
 928 {
 929         PyObject *t;
 930
 931         t = PyTuple_New(sz);
 932         if (!t)
 933                 Py_FatalError("couldn't create Python tuple");
 934         return t;
 935 }
 936
 937 static int tuple_set_s64(PyObject *t, unsigned int pos, s64 val)
 938 {
 939 #if BITS_PER_LONG == 64
 940         return PyTuple_SetItem(t, pos, _PyLong_FromLong(val));
 941 #endif
 942 #if BITS_PER_LONG == 32
 943         return PyTuple_SetItem(t, pos, PyLong_FromLongLong(val));
 944 #endif
 945 }
 946
 947 /*
 948  * Databases support only signed 64-bit numbers, so even though we are
 949  * exporting a u64, it must be as s64.
 950  */
 951 #define tuple_set_d64 tuple_set_s64
 952
 953 static int tuple_set_u64(PyObject *t, unsigned int pos, u64 val)
 954 {
 955 #if BITS_PER_LONG == 64
 956         return PyTuple_SetItem(t, pos, PyLong_FromUnsignedLong(val));
 957 #endif
 958 #if BITS_PER_LONG == 32
 959         return PyTuple_SetItem(t, pos, PyLong_FromUnsignedLongLong(val));
 960 #endif
 961 }
 962
 963 static int tuple_set_s32(PyObject *t, unsigned int pos, s32 val)
 964 {
 965         return PyTuple_SetItem(t, pos, _PyLong_FromLong(val));
 966 }
 967
 968 static int tuple_set_string(PyObject *t, unsigned int pos, const char *s)
 969 {
 970         return PyTuple_SetItem(t, pos, _PyUnicode_FromString(s));
 971 }
 972
 973 static int tuple_set_bytes(PyObject *t, unsigned int pos, void *bytes,
 974                            unsigned int sz)
 975 {
 976         return PyTuple_SetItem(t, pos, _PyBytes_FromStringAndSize(bytes, sz));
 977 }
 978
 979 static int python_export_evsel(struct db_export *dbe, struct evsel *evsel)
 980 {
 981         struct tables *tables = container_of(dbe, struct tables, dbe);
 982         PyObject *t;
 983
 984         t = tuple_new(2);
 985
 986         tuple_set_d64(t, 0, evsel->db_id);
 987         tuple_set_string(t, 1, evsel__name(evsel));
 988
 989         call_object(tables->evsel_handler, t, "evsel_table");
 990
 991         Py_DECREF(t);
 992
 993         return 0;
 994 }
 995
 996 static int python_export_machine(struct db_export *dbe,
 997                                  struct machine *machine)
 998 {
 999         struct tables *tables = container_of(dbe, struct tables, dbe);
1000         PyObject *t;
1001
1002         t = tuple_new(3);
1003
1004         tuple_set_d64(t, 0, machine->db_id);
1005         tuple_set_s32(t, 1, machine->pid);
1006         tuple_set_string(t, 2, machine->root_dir ? machine->root_dir : "");
1007
1008         call_object(tables->machine_handler, t, "machine_table");
1009
1010         Py_DECREF(t);
1011
1012         return 0;
1013 }
1014
1015 static int python_export_thread(struct db_export *dbe, struct thread *thread,
1016                                 u64 main_thread_db_id, struct machine *machine)
1017 {
1018         struct tables *tables = container_of(dbe, struct tables, dbe);
1019         PyObject *t;
1020
1021         t = tuple_new(5);
1022
1023         tuple_set_d64(t, 0, thread->db_id);
1024         tuple_set_d64(t, 1, machine->db_id);
1025         tuple_set_d64(t, 2, main_thread_db_id);
1026         tuple_set_s32(t, 3, thread->pid_);
1027         tuple_set_s32(t, 4, thread->tid);
1028
1029         call_object(tables->thread_handler, t, "thread_table");
1030
1031         Py_DECREF(t);
1032
1033         return 0;
1034 }
1035
1036 static int python_export_comm(struct db_export *dbe, struct comm *comm,
1037                               struct thread *thread)
1038 {
1039         struct tables *tables = container_of(dbe, struct tables, dbe);
1040         PyObject *t;
1041
1042         t = tuple_new(5);
1043
1044         tuple_set_d64(t, 0, comm->db_id);
1045         tuple_set_string(t, 1, comm__str(comm));
1046         tuple_set_d64(t, 2, thread->db_id);
1047         tuple_set_d64(t, 3, comm->start);
1048         tuple_set_s32(t, 4, comm->exec);
1049
1050         call_object(tables->comm_handler, t, "comm_table");
1051
1052         Py_DECREF(t);
1053
1054         return 0;
1055 }
1056
1057 static int python_export_comm_thread(struct db_export *dbe, u64 db_id,
1058                                      struct comm *comm, struct thread *thread)
1059 {
1060         struct tables *tables = container_of(dbe, struct tables, dbe);
1061         PyObject *t;
1062
1063         t = tuple_new(3);
1064
1065         tuple_set_d64(t, 0, db_id);
1066         tuple_set_d64(t, 1, comm->db_id);
1067         tuple_set_d64(t, 2, thread->db_id);
1068
1069         call_object(tables->comm_thread_handler, t, "comm_thread_table");
1070
1071         Py_DECREF(t);
1072
1073         return 0;
1074 }
1075
1076 static int python_export_dso(struct db_export *dbe, struct dso *dso,
1077                              struct machine *machine)
1078 {
1079         struct tables *tables = container_of(dbe, struct tables, dbe);
1080         char sbuild_id[SBUILD_ID_SIZE];
1081         PyObject *t;
1082
1083         build_id__sprintf(&dso->bid, sbuild_id);
1084
1085         t = tuple_new(5);
1086
1087         tuple_set_d64(t, 0, dso->db_id);
1088         tuple_set_d64(t, 1, machine->db_id);
1089         tuple_set_string(t, 2, dso->short_name);
1090         tuple_set_string(t, 3, dso->long_name);
1091         tuple_set_string(t, 4, sbuild_id);
1092
1093         call_object(tables->dso_handler, t, "dso_table");
1094
1095         Py_DECREF(t);
1096
1097         return 0;
1098 }
1099
1100 static int python_export_symbol(struct db_export *dbe, struct symbol *sym,
1101                                 struct dso *dso)
1102 {
1103         struct tables *tables = container_of(dbe, struct tables, dbe);
1104         u64 *sym_db_id = symbol__priv(sym);
1105         PyObject *t;
1106
1107         t = tuple_new(6);
1108
1109         tuple_set_d64(t, 0, *sym_db_id);
1110         tuple_set_d64(t, 1, dso->db_id);
1111         tuple_set_d64(t, 2, sym->start);
1112         tuple_set_d64(t, 3, sym->end);
1113         tuple_set_s32(t, 4, sym->binding);
1114         tuple_set_string(t, 5, sym->name);
1115
1116         call_object(tables->symbol_handler, t, "symbol_table");
1117
1118         Py_DECREF(t);
1119
1120         return 0;
1121 }
1122
1123 static int python_export_branch_type(struct db_export *dbe, u32 branch_type,
1124                                      const char *name)
1125 {
1126         struct tables *tables = container_of(dbe, struct tables, dbe);
1127         PyObject *t;
1128
1129         t = tuple_new(2);
1130
1131         tuple_set_s32(t, 0, branch_type);
1132         tuple_set_string(t, 1, name);
1133
1134         call_object(tables->branch_type_handler, t, "branch_type_table");
1135
1136         Py_DECREF(t);
1137
1138         return 0;
1139 }
1140
1141 static void python_export_sample_table(struct db_export *dbe,
1142                                        struct export_sample *es)
1143 {
1144         struct tables *tables = container_of(dbe, struct tables, dbe);
1145         PyObject *t;
1146
1147         t = tuple_new(24);
1148
1149         tuple_set_d64(t, 0, es->db_id);
1150         tuple_set_d64(t, 1, es->evsel->db_id);
1151         tuple_set_d64(t, 2, es->al->maps->machine->db_id);
1152         tuple_set_d64(t, 3, es->al->thread->db_id);
1153         tuple_set_d64(t, 4, es->comm_db_id);
1154         tuple_set_d64(t, 5, es->dso_db_id);
1155         tuple_set_d64(t, 6, es->sym_db_id);
1156         tuple_set_d64(t, 7, es->offset);
1157         tuple_set_d64(t, 8, es->sample->ip);
1158         tuple_set_d64(t, 9, es->sample->time);
1159         tuple_set_s32(t, 10, es->sample->cpu);
1160         tuple_set_d64(t, 11, es->addr_dso_db_id);
1161         tuple_set_d64(t, 12, es->addr_sym_db_id);
1162         tuple_set_d64(t, 13, es->addr_offset);
1163         tuple_set_d64(t, 14, es->sample->addr);
1164         tuple_set_d64(t, 15, es->sample->period);
1165         tuple_set_d64(t, 16, es->sample->weight);
1166         tuple_set_d64(t, 17, es->sample->transaction);
1167         tuple_set_d64(t, 18, es->sample->data_src);
1168         tuple_set_s32(t, 19, es->sample->flags & PERF_BRANCH_MASK);
1169         tuple_set_s32(t, 20, !!(es->sample->flags & PERF_IP_FLAG_IN_TX));
1170         tuple_set_d64(t, 21, es->call_path_id);
1171         tuple_set_d64(t, 22, es->sample->insn_cnt);
1172         tuple_set_d64(t, 23, es->sample->cyc_cnt);
1173
1174         call_object(tables->sample_handler, t, "sample_table");
1175
1176         Py_DECREF(t);
1177 }
1178
1179 static void python_export_synth(struct db_export *dbe, struct export_sample *es)
1180 {
1181         struct tables *tables = container_of(dbe, struct tables, dbe);
1182         PyObject *t;
1183
1184         t = tuple_new(3);
1185
1186         tuple_set_d64(t, 0, es->db_id);
1187         tuple_set_d64(t, 1, es->evsel->core.attr.config);
1188         tuple_set_bytes(t, 2, es->sample->raw_data, es->sample->raw_size);
1189
1190         call_object(tables->synth_handler, t, "synth_data");
1191
1192         Py_DECREF(t);
1193 }
1194
1195 static int python_export_sample(struct db_export *dbe,
1196                                 struct export_sample *es)
1197 {
1198         struct tables *tables = container_of(dbe, struct tables, dbe);
1199
1200         python_export_sample_table(dbe, es);
1201
1202         if (es->evsel->core.attr.type == PERF_TYPE_SYNTH && tables->synth_handler)
1203                 python_export_synth(dbe, es);
1204
1205         return 0;
1206 }
1207
1208 static int python_export_call_path(struct db_export *dbe, struct call_path *cp)
1209 {
1210         struct tables *tables = container_of(dbe, struct tables, dbe);
1211         PyObject *t;
1212         u64 parent_db_id, sym_db_id;
1213
1214         parent_db_id = cp->parent ? cp->parent->db_id : 0;
1215         sym_db_id = cp->sym ? *(u64 *)symbol__priv(cp->sym) : 0;
1216
1217         t = tuple_new(4);
1218
1219         tuple_set_d64(t, 0, cp->db_id);
1220         tuple_set_d64(t, 1, parent_db_id);
1221         tuple_set_d64(t, 2, sym_db_id);
1222         tuple_set_d64(t, 3, cp->ip);
1223
1224         call_object(tables->call_path_handler, t, "call_path_table");
1225
1226         Py_DECREF(t);
1227
1228         return 0;
1229 }
1230
1231 static int python_export_call_return(struct db_export *dbe,
1232                                      struct call_return *cr)
1233 {
1234         struct tables *tables = container_of(dbe, struct tables, dbe);
1235         u64 comm_db_id = cr->comm ? cr->comm->db_id : 0;
1236         PyObject *t;
1237
1238         t = tuple_new(14);
1239
1240         tuple_set_d64(t, 0, cr->db_id);
1241         tuple_set_d64(t, 1, cr->thread->db_id);
1242         tuple_set_d64(t, 2, comm_db_id);
1243         tuple_set_d64(t, 3, cr->cp->db_id);
1244         tuple_set_d64(t, 4, cr->call_time);
1245         tuple_set_d64(t, 5, cr->return_time);
1246         tuple_set_d64(t, 6, cr->branch_count);
1247         tuple_set_d64(t, 7, cr->call_ref);
1248         tuple_set_d64(t, 8, cr->return_ref);
1249         tuple_set_d64(t, 9, cr->cp->parent->db_id);
1250         tuple_set_s32(t, 10, cr->flags);
1251         tuple_set_d64(t, 11, cr->parent_db_id);
1252         tuple_set_d64(t, 12, cr->insn_count);
1253         tuple_set_d64(t, 13, cr->cyc_count);
1254
1255         call_object(tables->call_return_handler, t, "call_return_table");
1256
1257         Py_DECREF(t);
1258
1259         return 0;
1260 }
1261
1262 static int python_export_context_switch(struct db_export *dbe, u64 db_id,
1263                                         struct machine *machine,
1264                                         struct perf_sample *sample,
1265                                         u64 th_out_id, u64 comm_out_id,
1266                                         u64 th_in_id, u64 comm_in_id, int flags)
1267 {
1268         struct tables *tables = container_of(dbe, struct tables, dbe);
1269         PyObject *t;
1270
1271         t = tuple_new(9);
1272
1273         tuple_set_d64(t, 0, db_id);
1274         tuple_set_d64(t, 1, machine->db_id);
1275         tuple_set_d64(t, 2, sample->time);
1276         tuple_set_s32(t, 3, sample->cpu);
1277         tuple_set_d64(t, 4, th_out_id);
1278         tuple_set_d64(t, 5, comm_out_id);
1279         tuple_set_d64(t, 6, th_in_id);
1280         tuple_set_d64(t, 7, comm_in_id);
1281         tuple_set_s32(t, 8, flags);
1282
1283         call_object(tables->context_switch_handler, t, "context_switch");
1284
1285         Py_DECREF(t);
1286
1287         return 0;
1288 }
1289
1290 static int python_process_call_return(struct call_return *cr, u64 *parent_db_id,
1291                                       void *data)
1292 {
1293         struct db_export *dbe = data;
1294
1295         return db_export__call_return(dbe, cr, parent_db_id);
1296 }
1297
1298 static void python_process_general_event(struct perf_sample *sample,
1299                                          struct evsel *evsel,
1300                                          struct addr_location *al)
1301 {
1302         PyObject *handler, *t, *dict, *callchain;
1303         static char handler_name[64];
1304         unsigned n = 0;
1305
1306         snprintf(handler_name, sizeof(handler_name), "%s", "process_event");
1307
1308         handler = get_handler(handler_name);
1309         if (!handler)
1310                 return;
1311
1312         /*
1313          * Use the MAX_FIELDS to make the function expandable, though
1314          * currently there is only one item for the tuple.
1315          */
1316         t = PyTuple_New(MAX_FIELDS);
1317         if (!t)
1318                 Py_FatalError("couldn't create Python tuple");
1319
1320         /* ip unwinding */
1321         callchain = python_process_callchain(sample, evsel, al);
1322         dict = get_perf_sample_dict(sample, evsel, al, callchain);
1323
1324         PyTuple_SetItem(t, n++, dict);
1325         if (_PyTuple_Resize(&t, n) == -1)
1326                 Py_FatalError("error resizing Python tuple");
1327
1328         call_object(handler, t, handler_name);
1329
1330         Py_DECREF(t);
1331 }
1332
1333 static void python_process_event(union perf_event *event,
1334                                  struct perf_sample *sample,
1335                                  struct evsel *evsel,
1336                                  struct addr_location *al)
1337 {
1338         struct tables *tables = &tables_global;
1339
1340         switch (evsel->core.attr.type) {
1341         case PERF_TYPE_TRACEPOINT:
1342                 python_process_tracepoint(sample, evsel, al);
1343                 break;
1344         /* Reserve for future process_hw/sw/raw APIs */
1345         default:
1346                 if (tables->db_export_mode)
1347                         db_export__sample(&tables->dbe, event, sample, evsel, al);
1348                 else
1349                         python_process_general_event(sample, evsel, al);
1350         }
1351 }
1352
1353 static void python_process_switch(union perf_event *event,
1354                                   struct perf_sample *sample,
1355                                   struct machine *machine)
1356 {
1357         struct tables *tables = &tables_global;
1358
1359         if (tables->db_export_mode)
1360                 db_export__switch(&tables->dbe, event, sample, machine);
1361 }
1362
1363 static void get_handler_name(char *str, size_t size,
1364                              struct evsel *evsel)
1365 {
1366         char *p = str;
1367
1368         scnprintf(str, size, "stat__%s", evsel__name(evsel));
1369
1370         while ((p = strchr(p, ':'))) {
1371                 *p = '_';
1372                 p++;
1373         }
1374 }
1375
1376 static void
1377 process_stat(struct evsel *counter, int cpu, int thread, u64 tstamp,
1378              struct perf_counts_values *count)
1379 {
1380         PyObject *handler, *t;
1381         static char handler_name[256];
1382         int n = 0;
1383
1384         t = PyTuple_New(MAX_FIELDS);
1385         if (!t)
1386                 Py_FatalError("couldn't create Python tuple");
1387
1388         get_handler_name(handler_name, sizeof(handler_name),
1389                          counter);
1390
1391         handler = get_handler(handler_name);
1392         if (!handler) {
1393                 pr_debug("can't find python handler %s\n", handler_name);
1394                 return;
1395         }
1396
1397         PyTuple_SetItem(t, n++, _PyLong_FromLong(cpu));
1398         PyTuple_SetItem(t, n++, _PyLong_FromLong(thread));
1399
1400         tuple_set_u64(t, n++, tstamp);
1401         tuple_set_u64(t, n++, count->val);
1402         tuple_set_u64(t, n++, count->ena);
1403         tuple_set_u64(t, n++, count->run);
1404
1405         if (_PyTuple_Resize(&t, n) == -1)
1406                 Py_FatalError("error resizing Python tuple");
1407
1408         call_object(handler, t, handler_name);
1409
1410         Py_DECREF(t);
1411 }
1412
1413 static void python_process_stat(struct perf_stat_config *config,
1414                                 struct evsel *counter, u64 tstamp)
1415 {
1416         struct perf_thread_map *threads = counter->core.threads;
1417         struct perf_cpu_map *cpus = counter->core.cpus;
1418         int cpu, thread;
1419
1420         if (config->aggr_mode == AGGR_GLOBAL) {
1421                 process_stat(counter, -1, -1, tstamp,
1422                              &counter->counts->aggr);
1423                 return;
1424         }
1425
1426         for (thread = 0; thread < threads->nr; thread++) {
1427                 for (cpu = 0; cpu < cpus->nr; cpu++) {
1428                         process_stat(counter, cpus->map[cpu],
1429                                      perf_thread_map__pid(threads, thread), tstamp,
1430                                      perf_counts(counter->counts, cpu, thread));
1431                 }
1432         }
1433 }
1434
1435 static void python_process_stat_interval(u64 tstamp)
1436 {
1437         PyObject *handler, *t;
1438         static const char handler_name[] = "stat__interval";
1439         int n = 0;
1440
1441         t = PyTuple_New(MAX_FIELDS);
1442         if (!t)
1443                 Py_FatalError("couldn't create Python tuple");
1444
1445         handler = get_handler(handler_name);
1446         if (!handler) {
1447                 pr_debug("can't find python handler %s\n", handler_name);
1448                 return;
1449         }
1450
1451         tuple_set_u64(t, n++, tstamp);
1452
1453         if (_PyTuple_Resize(&t, n) == -1)
1454                 Py_FatalError("error resizing Python tuple");
1455
1456         call_object(handler, t, handler_name);
1457
1458         Py_DECREF(t);
1459 }
1460
1461 static int run_start_sub(void)
1462 {
1463         main_module = PyImport_AddModule("__main__");
1464         if (main_module == NULL)
1465                 return -1;
1466         Py_INCREF(main_module);
1467
1468         main_dict = PyModule_GetDict(main_module);
1469         if (main_dict == NULL)
1470                 goto error;
1471         Py_INCREF(main_dict);
1472
1473         try_call_object("trace_begin", NULL);
1474
1475         return 0;
1476
1477 error:
1478         Py_XDECREF(main_dict);
1479         Py_XDECREF(main_module);
1480         return -1;
1481 }
1482
1483 #define SET_TABLE_HANDLER_(name, handler_name, table_name) do {         \
1484         tables->handler_name = get_handler(#table_name);                \
1485         if (tables->handler_name)                                       \
1486                 tables->dbe.export_ ## name = python_export_ ## name;   \
1487 } while (0)
1488
1489 #define SET_TABLE_HANDLER(name) \
1490         SET_TABLE_HANDLER_(name, name ## _handler, name ## _table)
1491
1492 static void set_table_handlers(struct tables *tables)
1493 {
1494         const char *perf_db_export_mode = "perf_db_export_mode";
1495         const char *perf_db_export_calls = "perf_db_export_calls";
1496         const char *perf_db_export_callchains = "perf_db_export_callchains";
1497         PyObject *db_export_mode, *db_export_calls, *db_export_callchains;
1498         bool export_calls = false;
1499         bool export_callchains = false;
1500         int ret;
1501
1502         memset(tables, 0, sizeof(struct tables));
1503         if (db_export__init(&tables->dbe))
1504                 Py_FatalError("failed to initialize export");
1505
1506         db_export_mode = PyDict_GetItemString(main_dict, perf_db_export_mode);
1507         if (!db_export_mode)
1508                 return;
1509
1510         ret = PyObject_IsTrue(db_export_mode);
1511         if (ret == -1)
1512                 handler_call_die(perf_db_export_mode);
1513         if (!ret)
1514                 return;
1515
1516         /* handle export calls */
1517         tables->dbe.crp = NULL;
1518         db_export_calls = PyDict_GetItemString(main_dict, perf_db_export_calls);
1519         if (db_export_calls) {
1520                 ret = PyObject_IsTrue(db_export_calls);
1521                 if (ret == -1)
1522                         handler_call_die(perf_db_export_calls);
1523                 export_calls = !!ret;
1524         }
1525
1526         if (export_calls) {
1527                 tables->dbe.crp =
1528                         call_return_processor__new(python_process_call_return,
1529                                                    &tables->dbe);
1530                 if (!tables->dbe.crp)
1531                         Py_FatalError("failed to create calls processor");
1532         }
1533
1534         /* handle export callchains */
1535         tables->dbe.cpr = NULL;
1536         db_export_callchains = PyDict_GetItemString(main_dict,
1537                                                     perf_db_export_callchains);
1538         if (db_export_callchains) {
1539                 ret = PyObject_IsTrue(db_export_callchains);
1540                 if (ret == -1)
1541                         handler_call_die(perf_db_export_callchains);
1542                 export_callchains = !!ret;
1543         }
1544
1545         if (export_callchains) {
1546                 /*
1547                  * Attempt to use the call path root from the call return
1548                  * processor, if the call return processor is in use. Otherwise,
1549                  * we allocate a new call path root. This prevents exporting
1550                  * duplicate call path ids when both are in use simultaniously.
1551                  */
1552                 if (tables->dbe.crp)
1553                         tables->dbe.cpr = tables->dbe.crp->cpr;
1554                 else
1555                         tables->dbe.cpr = call_path_root__new();
1556
1557                 if (!tables->dbe.cpr)
1558                         Py_FatalError("failed to create call path root");
1559         }
1560
1561         tables->db_export_mode = true;
1562         /*
1563          * Reserve per symbol space for symbol->db_id via symbol__priv()
1564          */
1565         symbol_conf.priv_size = sizeof(u64);
1566
1567         SET_TABLE_HANDLER(evsel);
1568         SET_TABLE_HANDLER(machine);
1569         SET_TABLE_HANDLER(thread);
1570         SET_TABLE_HANDLER(comm);
1571         SET_TABLE_HANDLER(comm_thread);
1572         SET_TABLE_HANDLER(dso);
1573         SET_TABLE_HANDLER(symbol);
1574         SET_TABLE_HANDLER(branch_type);
1575         SET_TABLE_HANDLER(sample);
1576         SET_TABLE_HANDLER(call_path);
1577         SET_TABLE_HANDLER(call_return);
1578         SET_TABLE_HANDLER(context_switch);
1579
1580         /*
1581          * Synthesized events are samples but with architecture-specific data
1582          * stored in sample->raw_data. They are exported via
1583          * python_export_sample() and consequently do not need a separate export
1584          * callback.
1585          */
1586         tables->synth_handler = get_handler("synth_data");
1587 }
1588
1589 #if PY_MAJOR_VERSION < 3
1590 static void _free_command_line(const char **command_line, int num)
1591 {
1592         free(command_line);
1593 }
1594 #else
1595 static void _free_command_line(wchar_t **command_line, int num)
1596 {
1597         int i;
1598         for (i = 0; i < num; i++)
1599                 PyMem_RawFree(command_line[i]);
1600         free(command_line);
1601 }
1602 #endif
1603
1604
1605 /*
1606  * Start trace script
1607  */
1608 static int python_start_script(const char *script, int argc, const char **argv)
1609 {
1610         struct tables *tables = &tables_global;
1611 #if PY_MAJOR_VERSION < 3
1612         const char **command_line;
1613 #else
1614         wchar_t **command_line;
1615 #endif
1616         /*
1617          * Use a non-const name variable to cope with python 2.6's
1618          * PyImport_AppendInittab prototype
1619          */
1620         char buf[PATH_MAX], name[19] = "perf_trace_context";
1621         int i, err = 0;
1622         FILE *fp;
1623
1624 #if PY_MAJOR_VERSION < 3
1625         command_line = malloc((argc + 1) * sizeof(const char *));
1626         command_line[0] = script;
1627         for (i = 1; i < argc + 1; i++)
1628                 command_line[i] = argv[i - 1];
1629         PyImport_AppendInittab(name, initperf_trace_context);
1630 #else
1631         command_line = malloc((argc + 1) * sizeof(wchar_t *));
1632         command_line[0] = Py_DecodeLocale(script, NULL);
1633         for (i = 1; i < argc + 1; i++)
1634                 command_line[i] = Py_DecodeLocale(argv[i - 1], NULL);
1635         PyImport_AppendInittab(name, PyInit_perf_trace_context);
1636 #endif
1637         Py_Initialize();
1638
1639 #if PY_MAJOR_VERSION < 3
1640         PySys_SetArgv(argc + 1, (char **)command_line);
1641 #else
1642         PySys_SetArgv(argc + 1, command_line);
1643 #endif
1644
1645         fp = fopen(script, "r");
1646         if (!fp) {
1647                 sprintf(buf, "Can't open python script \"%s\"", script);
1648                 perror(buf);
1649                 err = -1;
1650                 goto error;
1651         }
1652
1653         err = PyRun_SimpleFile(fp, script);
1654         if (err) {
1655                 fprintf(stderr, "Error running python script %s\n", script);
1656                 goto error;
1657         }
1658
1659         err = run_start_sub();
1660         if (err) {
1661                 fprintf(stderr, "Error starting python script %s\n", script);
1662                 goto error;
1663         }
1664
1665         set_table_handlers(tables);
1666
1667         if (tables->db_export_mode) {
1668                 err = db_export__branch_types(&tables->dbe);
1669                 if (err)
1670                         goto error;
1671         }
1672
1673         _free_command_line(command_line, argc + 1);
1674
1675         return err;
1676 error:
1677         Py_Finalize();
1678         _free_command_line(command_line, argc + 1);
1679
1680         return err;
1681 }
1682
1683 static int python_flush_script(void)
1684 {
1685         return 0;
1686 }
1687
1688 /*
1689  * Stop trace script
1690  */
1691 static int python_stop_script(void)
1692 {
1693         struct tables *tables = &tables_global;
1694
1695         try_call_object("trace_end", NULL);
1696
1697         db_export__exit(&tables->dbe);
1698
1699         Py_XDECREF(main_dict);
1700         Py_XDECREF(main_module);
1701         Py_Finalize();
1702
1703         return 0;
1704 }
1705
1706 static int python_generate_script(struct tep_handle *pevent, const char *outfile)
1707 {
1708         int i, not_first, count, nr_events;
1709         struct tep_event **all_events;
1710         struct tep_event *event = NULL;
1711         struct tep_format_field *f;
1712         char fname[PATH_MAX];
1713         FILE *ofp;
1714
1715         sprintf(fname, "%s.py", outfile);
1716         ofp = fopen(fname, "w");
1717         if (ofp == NULL) {
1718                 fprintf(stderr, "couldn't open %s\n", fname);
1719                 return -1;
1720         }
1721         fprintf(ofp, "# perf script event handlers, "
1722                 "generated by perf script -g python\n");
1723
1724         fprintf(ofp, "# Licensed under the terms of the GNU GPL"
1725                 " License version 2\n\n");
1726
1727         fprintf(ofp, "# The common_* event handler fields are the most useful "
1728                 "fields common to\n");
1729
1730         fprintf(ofp, "# all events.  They don't necessarily correspond to "
1731                 "the 'common_*' fields\n");
1732
1733         fprintf(ofp, "# in the format files.  Those fields not available as "
1734                 "handler params can\n");
1735
1736         fprintf(ofp, "# be retrieved using Python functions of the form "
1737                 "common_*(context).\n");
1738
1739         fprintf(ofp, "# See the perf-script-python Documentation for the list "
1740                 "of available functions.\n\n");
1741
1742         fprintf(ofp, "from __future__ import print_function\n\n");
1743         fprintf(ofp, "import os\n");
1744         fprintf(ofp, "import sys\n\n");
1745
1746         fprintf(ofp, "sys.path.append(os.environ['PERF_EXEC_PATH'] + \\\n");
1747         fprintf(ofp, "\t'/scripts/python/Perf-Trace-Util/lib/Perf/Trace')\n");
1748         fprintf(ofp, "\nfrom perf_trace_context import *\n");
1749         fprintf(ofp, "from Core import *\n\n\n");
1750
1751         fprintf(ofp, "def trace_begin():\n");
1752         fprintf(ofp, "\tprint(\"in trace_begin\")\n\n");
1753
1754         fprintf(ofp, "def trace_end():\n");
1755         fprintf(ofp, "\tprint(\"in trace_end\")\n\n");
1756
1757         nr_events = tep_get_events_count(pevent);
1758         all_events = tep_list_events(pevent, TEP_EVENT_SORT_ID);
1759
1760         for (i = 0; all_events && i < nr_events; i++) {
1761                 event = all_events[i];
1762                 fprintf(ofp, "def %s__%s(", event->system, event->name);
1763                 fprintf(ofp, "event_name, ");
1764                 fprintf(ofp, "context, ");
1765                 fprintf(ofp, "common_cpu,\n");
1766                 fprintf(ofp, "\tcommon_secs, ");
1767                 fprintf(ofp, "common_nsecs, ");
1768                 fprintf(ofp, "common_pid, ");
1769                 fprintf(ofp, "common_comm,\n\t");
1770                 fprintf(ofp, "common_callchain, ");
1771
1772                 not_first = 0;
1773                 count = 0;
1774
1775                 for (f = event->format.fields; f; f = f->next) {
1776                         if (not_first++)
1777                                 fprintf(ofp, ", ");
1778                         if (++count % 5 == 0)
1779                                 fprintf(ofp, "\n\t");
1780
1781                         fprintf(ofp, "%s", f->name);
1782                 }
1783                 if (not_first++)
1784                         fprintf(ofp, ", ");
1785                 if (++count % 5 == 0)
1786                         fprintf(ofp, "\n\t\t");
1787                 fprintf(ofp, "perf_sample_dict");
1788
1789                 fprintf(ofp, "):\n");
1790
1791                 fprintf(ofp, "\t\tprint_header(event_name, common_cpu, "
1792                         "common_secs, common_nsecs,\n\t\t\t"
1793                         "common_pid, common_comm)\n\n");
1794
1795                 fprintf(ofp, "\t\tprint(\"");
1796
1797                 not_first = 0;
1798                 count = 0;
1799
1800                 for (f = event->format.fields; f; f = f->next) {
1801                         if (not_first++)
1802                                 fprintf(ofp, ", ");
1803                         if (count && count % 3 == 0) {
1804                                 fprintf(ofp, "\" \\\n\t\t\"");
1805                         }
1806                         count++;
1807
1808                         fprintf(ofp, "%s=", f->name);
1809                         if (f->flags & TEP_FIELD_IS_STRING ||
1810                             f->flags & TEP_FIELD_IS_FLAG ||
1811                             f->flags & TEP_FIELD_IS_ARRAY ||
1812                             f->flags & TEP_FIELD_IS_SYMBOLIC)
1813                                 fprintf(ofp, "%%s");
1814                         else if (f->flags & TEP_FIELD_IS_SIGNED)
1815                                 fprintf(ofp, "%%d");
1816                         else
1817                                 fprintf(ofp, "%%u");
1818                 }
1819
1820                 fprintf(ofp, "\" %% \\\n\t\t(");
1821
1822                 not_first = 0;
1823                 count = 0;
1824
1825                 for (f = event->format.fields; f; f = f->next) {
1826                         if (not_first++)
1827                                 fprintf(ofp, ", ");
1828
1829                         if (++count % 5 == 0)
1830                                 fprintf(ofp, "\n\t\t");
1831
1832                         if (f->flags & TEP_FIELD_IS_FLAG) {
1833                                 if ((count - 1) % 5 != 0) {
1834                                         fprintf(ofp, "\n\t\t");
1835                                         count = 4;
1836                                 }
1837                                 fprintf(ofp, "flag_str(\"");
1838                                 fprintf(ofp, "%s__%s\", ", event->system,
1839                                         event->name);
1840                                 fprintf(ofp, "\"%s\", %s)", f->name,
1841                                         f->name);
1842                         } else if (f->flags & TEP_FIELD_IS_SYMBOLIC) {
1843                                 if ((count - 1) % 5 != 0) {
1844                                         fprintf(ofp, "\n\t\t");
1845                                         count = 4;
1846                                 }
1847                                 fprintf(ofp, "symbol_str(\"");
1848                                 fprintf(ofp, "%s__%s\", ", event->system,
1849                                         event->name);
1850                                 fprintf(ofp, "\"%s\", %s)", f->name,
1851                                         f->name);
1852                         } else
1853                                 fprintf(ofp, "%s", f->name);
1854                 }
1855
1856                 fprintf(ofp, "))\n\n");
1857
1858                 fprintf(ofp, "\t\tprint('Sample: {'+"
1859                         "get_dict_as_string(perf_sample_dict['sample'], ', ')+'}')\n\n");
1860
1861                 fprintf(ofp, "\t\tfor node in common_callchain:");
1862                 fprintf(ofp, "\n\t\t\tif 'sym' in node:");
1863                 fprintf(ofp, "\n\t\t\t\tprint(\"\\t[%%x] %%s\" %% (node['ip'], node['sym']['name']))");
1864                 fprintf(ofp, "\n\t\t\telse:");
1865                 fprintf(ofp, "\n\t\t\t\tprint(\"\t[%%x]\" %% (node['ip']))\n\n");
1866                 fprintf(ofp, "\t\tprint()\n\n");
1867
1868         }
1869
1870         fprintf(ofp, "def trace_unhandled(event_name, context, "
1871                 "event_fields_dict, perf_sample_dict):\n");
1872
1873         fprintf(ofp, "\t\tprint(get_dict_as_string(event_fields_dict))\n");
1874         fprintf(ofp, "\t\tprint('Sample: {'+"
1875                 "get_dict_as_string(perf_sample_dict['sample'], ', ')+'}')\n\n");
1876
1877         fprintf(ofp, "def print_header("
1878                 "event_name, cpu, secs, nsecs, pid, comm):\n"
1879                 "\tprint(\"%%-20s %%5u %%05u.%%09u %%8u %%-20s \" %% \\\n\t"
1880                 "(event_name, cpu, secs, nsecs, pid, comm), end=\"\")\n\n");
1881
1882         fprintf(ofp, "def get_dict_as_string(a_dict, delimiter=' '):\n"
1883                 "\treturn delimiter.join"
1884                 "(['%%s=%%s'%%(k,str(v))for k,v in sorted(a_dict.items())])\n");
1885
1886         fclose(ofp);
1887
1888         fprintf(stderr, "generated Python script: %s\n", fname);
1889
1890         return 0;
1891 }
1892
1893 struct scripting_ops python_scripting_ops = {
1894         .name                   = "Python",
1895         .start_script           = python_start_script,
1896         .flush_script           = python_flush_script,
1897         .stop_script            = python_stop_script,
1898         .process_event          = python_process_event,
1899         .process_switch         = python_process_switch,
1900         .process_stat           = python_process_stat,
1901         .process_stat_interval  = python_process_stat_interval,
1902         .generate_script        = python_generate_script,
1903 };