2 * trace-event-python. Feed trace events to an embedded Python interpreter.
4 * Copyright (C) 2010 Tom Zanussi <tzanussi@gmail.com>
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.
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.
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
29 #include <linux/bitmap.h>
31 #include "../../perf.h"
33 #include "../callchain.h"
37 #include "../thread.h"
39 #include "../machine.h"
40 #include "../db-export.h"
41 #include "../thread-stack.h"
42 #include "../trace-event.h"
43 #include "../machine.h"
44 #include "thread_map.h"
48 PyMODINIT_FUNC initperf_trace_context(void);
50 #define TRACE_EVENT_TYPE_MAX \
51 ((1 << (sizeof(unsigned short) * 8)) - 1)
53 static DECLARE_BITMAP(events_defined, TRACE_EVENT_TYPE_MAX);
56 #define N_COMMON_FIELDS 7
58 extern struct scripting_context *scripting_context;
60 static char *cur_field_name;
61 static int zero_flag_atom;
63 static PyObject *main_module, *main_dict;
67 PyObject *evsel_handler;
68 PyObject *machine_handler;
69 PyObject *thread_handler;
70 PyObject *comm_handler;
71 PyObject *comm_thread_handler;
72 PyObject *dso_handler;
73 PyObject *symbol_handler;
74 PyObject *branch_type_handler;
75 PyObject *sample_handler;
76 PyObject *call_path_handler;
77 PyObject *call_return_handler;
81 static struct tables tables_global;
83 static void handler_call_die(const char *handler_name) NORETURN;
84 static void handler_call_die(const char *handler_name)
87 Py_FatalError("problem in Python trace event handler");
88 // Py_FatalError does not return
89 // but we have to make the compiler happy
94 * Insert val into into the dictionary and decrement the reference counter.
95 * This is necessary for dictionaries since PyDict_SetItemString() does not
96 * steal a reference, as opposed to PyTuple_SetItem().
98 static void pydict_set_item_string_decref(PyObject *dict, const char *key, PyObject *val)
100 PyDict_SetItemString(dict, key, val);
104 static PyObject *get_handler(const char *handler_name)
108 handler = PyDict_GetItemString(main_dict, handler_name);
109 if (handler && !PyCallable_Check(handler))
114 static void call_object(PyObject *handler, PyObject *args, const char *die_msg)
118 retval = PyObject_CallObject(handler, args);
120 handler_call_die(die_msg);
124 static void try_call_object(const char *handler_name, PyObject *args)
128 handler = get_handler(handler_name);
130 call_object(handler, args, handler_name);
133 static void define_value(enum print_arg_type field_type,
135 const char *field_name,
136 const char *field_value,
137 const char *field_str)
139 const char *handler_name = "define_flag_value";
141 unsigned long long value;
144 if (field_type == PRINT_SYMBOL)
145 handler_name = "define_symbolic_value";
149 Py_FatalError("couldn't create Python tuple");
151 value = eval_flag(field_value);
153 PyTuple_SetItem(t, n++, PyString_FromString(ev_name));
154 PyTuple_SetItem(t, n++, PyString_FromString(field_name));
155 PyTuple_SetItem(t, n++, PyInt_FromLong(value));
156 PyTuple_SetItem(t, n++, PyString_FromString(field_str));
158 try_call_object(handler_name, t);
163 static void define_values(enum print_arg_type field_type,
164 struct print_flag_sym *field,
166 const char *field_name)
168 define_value(field_type, ev_name, field_name, field->value,
172 define_values(field_type, field->next, ev_name, field_name);
175 static void define_field(enum print_arg_type field_type,
177 const char *field_name,
180 const char *handler_name = "define_flag_field";
184 if (field_type == PRINT_SYMBOL)
185 handler_name = "define_symbolic_field";
187 if (field_type == PRINT_FLAGS)
192 Py_FatalError("couldn't create Python tuple");
194 PyTuple_SetItem(t, n++, PyString_FromString(ev_name));
195 PyTuple_SetItem(t, n++, PyString_FromString(field_name));
196 if (field_type == PRINT_FLAGS)
197 PyTuple_SetItem(t, n++, PyString_FromString(delim));
199 try_call_object(handler_name, t);
204 static void define_event_symbols(struct event_format *event,
206 struct print_arg *args)
211 switch (args->type) {
215 define_value(PRINT_FLAGS, ev_name, cur_field_name, "0",
220 free(cur_field_name);
221 cur_field_name = strdup(args->field.name);
224 define_event_symbols(event, ev_name, args->flags.field);
225 define_field(PRINT_FLAGS, ev_name, cur_field_name,
227 define_values(PRINT_FLAGS, args->flags.flags, ev_name,
231 define_event_symbols(event, ev_name, args->symbol.field);
232 define_field(PRINT_SYMBOL, ev_name, cur_field_name, NULL);
233 define_values(PRINT_SYMBOL, args->symbol.symbols, ev_name,
237 define_event_symbols(event, ev_name, args->hex.field);
238 define_event_symbols(event, ev_name, args->hex.size);
240 case PRINT_INT_ARRAY:
241 define_event_symbols(event, ev_name, args->int_array.field);
242 define_event_symbols(event, ev_name, args->int_array.count);
243 define_event_symbols(event, ev_name, args->int_array.el_size);
248 define_event_symbols(event, ev_name, args->typecast.item);
251 if (strcmp(args->op.op, ":") == 0)
253 define_event_symbols(event, ev_name, args->op.left);
254 define_event_symbols(event, ev_name, args->op.right);
257 /* gcc warns for these? */
259 case PRINT_DYNAMIC_ARRAY:
260 case PRINT_DYNAMIC_ARRAY_LEN:
263 /* we should warn... */
268 define_event_symbols(event, ev_name, args->next);
271 static PyObject *get_field_numeric_entry(struct event_format *event,
272 struct format_field *field, void *data)
274 bool is_array = field->flags & FIELD_IS_ARRAY;
275 PyObject *obj, *list = NULL;
276 unsigned long long val;
277 unsigned int item_size, n_items, i;
280 list = PyList_New(field->arraylen);
281 item_size = field->size / field->arraylen;
282 n_items = field->arraylen;
284 item_size = field->size;
288 for (i = 0; i < n_items; i++) {
290 val = read_size(event, data + field->offset + i * item_size,
292 if (field->flags & FIELD_IS_SIGNED) {
293 if ((long long)val >= LONG_MIN &&
294 (long long)val <= LONG_MAX)
295 obj = PyInt_FromLong(val);
297 obj = PyLong_FromLongLong(val);
300 obj = PyInt_FromLong(val);
302 obj = PyLong_FromUnsignedLongLong(val);
305 PyList_SET_ITEM(list, i, obj);
313 static PyObject *python_process_callchain(struct perf_sample *sample,
314 struct perf_evsel *evsel,
315 struct addr_location *al)
319 pylist = PyList_New(0);
321 Py_FatalError("couldn't create Python list");
323 if (!symbol_conf.use_callchain || !sample->callchain)
326 if (thread__resolve_callchain(al->thread, evsel,
328 scripting_max_stack) != 0) {
329 pr_err("Failed to resolve callchain. Skipping\n");
332 callchain_cursor_commit(&callchain_cursor);
337 struct callchain_cursor_node *node;
338 node = callchain_cursor_current(&callchain_cursor);
342 pyelem = PyDict_New();
344 Py_FatalError("couldn't create Python dictionary");
347 pydict_set_item_string_decref(pyelem, "ip",
348 PyLong_FromUnsignedLongLong(node->ip));
351 PyObject *pysym = PyDict_New();
353 Py_FatalError("couldn't create Python dictionary");
354 pydict_set_item_string_decref(pysym, "start",
355 PyLong_FromUnsignedLongLong(node->sym->start));
356 pydict_set_item_string_decref(pysym, "end",
357 PyLong_FromUnsignedLongLong(node->sym->end));
358 pydict_set_item_string_decref(pysym, "binding",
359 PyInt_FromLong(node->sym->binding));
360 pydict_set_item_string_decref(pysym, "name",
361 PyString_FromStringAndSize(node->sym->name,
362 node->sym->namelen));
363 pydict_set_item_string_decref(pyelem, "sym", pysym);
367 struct map *map = node->map;
368 const char *dsoname = "[unknown]";
369 if (map && map->dso && (map->dso->name || map->dso->long_name)) {
370 if (symbol_conf.show_kernel_path && map->dso->long_name)
371 dsoname = map->dso->long_name;
372 else if (map->dso->name)
373 dsoname = map->dso->name;
375 pydict_set_item_string_decref(pyelem, "dso",
376 PyString_FromString(dsoname));
379 callchain_cursor_advance(&callchain_cursor);
380 PyList_Append(pylist, pyelem);
389 static void python_process_tracepoint(struct perf_sample *sample,
390 struct perf_evsel *evsel,
391 struct addr_location *al)
393 struct event_format *event = evsel->tp_format;
394 PyObject *handler, *context, *t, *obj, *callchain;
395 PyObject *dict = NULL;
396 static char handler_name[256];
397 struct format_field *field;
401 int cpu = sample->cpu;
402 void *data = sample->raw_data;
403 unsigned long long nsecs = sample->time;
404 const char *comm = thread__comm_str(al->thread);
406 t = PyTuple_New(MAX_FIELDS);
408 Py_FatalError("couldn't create Python tuple");
411 die("ug! no event found for type %d", (int)evsel->attr.config);
413 pid = raw_field_value(event, "common_pid", data);
415 sprintf(handler_name, "%s__%s", event->system, event->name);
417 if (!test_and_set_bit(event->id, events_defined))
418 define_event_symbols(event, handler_name, event->print_fmt.args);
420 handler = get_handler(handler_name);
424 Py_FatalError("couldn't create Python dict");
426 s = nsecs / NSECS_PER_SEC;
427 ns = nsecs - s * NSECS_PER_SEC;
429 scripting_context->event_data = data;
430 scripting_context->pevent = evsel->tp_format->pevent;
432 context = PyCObject_FromVoidPtr(scripting_context, NULL);
434 PyTuple_SetItem(t, n++, PyString_FromString(handler_name));
435 PyTuple_SetItem(t, n++, context);
438 callchain = python_process_callchain(sample, evsel, al);
441 PyTuple_SetItem(t, n++, PyInt_FromLong(cpu));
442 PyTuple_SetItem(t, n++, PyInt_FromLong(s));
443 PyTuple_SetItem(t, n++, PyInt_FromLong(ns));
444 PyTuple_SetItem(t, n++, PyInt_FromLong(pid));
445 PyTuple_SetItem(t, n++, PyString_FromString(comm));
446 PyTuple_SetItem(t, n++, callchain);
448 pydict_set_item_string_decref(dict, "common_cpu", PyInt_FromLong(cpu));
449 pydict_set_item_string_decref(dict, "common_s", PyInt_FromLong(s));
450 pydict_set_item_string_decref(dict, "common_ns", PyInt_FromLong(ns));
451 pydict_set_item_string_decref(dict, "common_pid", PyInt_FromLong(pid));
452 pydict_set_item_string_decref(dict, "common_comm", PyString_FromString(comm));
453 pydict_set_item_string_decref(dict, "common_callchain", callchain);
455 for (field = event->format.fields; field; field = field->next) {
456 if (field->flags & FIELD_IS_STRING) {
458 if (field->flags & FIELD_IS_DYNAMIC) {
459 offset = *(int *)(data + field->offset);
462 offset = field->offset;
463 obj = PyString_FromString((char *)data + offset);
464 } else { /* FIELD_IS_NUMERIC */
465 obj = get_field_numeric_entry(event, field, data);
468 PyTuple_SetItem(t, n++, obj);
470 pydict_set_item_string_decref(dict, field->name, obj);
475 PyTuple_SetItem(t, n++, dict);
477 if (_PyTuple_Resize(&t, n) == -1)
478 Py_FatalError("error resizing Python tuple");
481 call_object(handler, t, handler_name);
483 try_call_object("trace_unhandled", t);
490 static PyObject *tuple_new(unsigned int sz)
496 Py_FatalError("couldn't create Python tuple");
500 static int tuple_set_u64(PyObject *t, unsigned int pos, u64 val)
502 #if BITS_PER_LONG == 64
503 return PyTuple_SetItem(t, pos, PyInt_FromLong(val));
505 #if BITS_PER_LONG == 32
506 return PyTuple_SetItem(t, pos, PyLong_FromLongLong(val));
510 static int tuple_set_s32(PyObject *t, unsigned int pos, s32 val)
512 return PyTuple_SetItem(t, pos, PyInt_FromLong(val));
515 static int tuple_set_string(PyObject *t, unsigned int pos, const char *s)
517 return PyTuple_SetItem(t, pos, PyString_FromString(s));
520 static int python_export_evsel(struct db_export *dbe, struct perf_evsel *evsel)
522 struct tables *tables = container_of(dbe, struct tables, dbe);
527 tuple_set_u64(t, 0, evsel->db_id);
528 tuple_set_string(t, 1, perf_evsel__name(evsel));
530 call_object(tables->evsel_handler, t, "evsel_table");
537 static int python_export_machine(struct db_export *dbe,
538 struct machine *machine)
540 struct tables *tables = container_of(dbe, struct tables, dbe);
545 tuple_set_u64(t, 0, machine->db_id);
546 tuple_set_s32(t, 1, machine->pid);
547 tuple_set_string(t, 2, machine->root_dir ? machine->root_dir : "");
549 call_object(tables->machine_handler, t, "machine_table");
556 static int python_export_thread(struct db_export *dbe, struct thread *thread,
557 u64 main_thread_db_id, struct machine *machine)
559 struct tables *tables = container_of(dbe, struct tables, dbe);
564 tuple_set_u64(t, 0, thread->db_id);
565 tuple_set_u64(t, 1, machine->db_id);
566 tuple_set_u64(t, 2, main_thread_db_id);
567 tuple_set_s32(t, 3, thread->pid_);
568 tuple_set_s32(t, 4, thread->tid);
570 call_object(tables->thread_handler, t, "thread_table");
577 static int python_export_comm(struct db_export *dbe, struct comm *comm)
579 struct tables *tables = container_of(dbe, struct tables, dbe);
584 tuple_set_u64(t, 0, comm->db_id);
585 tuple_set_string(t, 1, comm__str(comm));
587 call_object(tables->comm_handler, t, "comm_table");
594 static int python_export_comm_thread(struct db_export *dbe, u64 db_id,
595 struct comm *comm, struct thread *thread)
597 struct tables *tables = container_of(dbe, struct tables, dbe);
602 tuple_set_u64(t, 0, db_id);
603 tuple_set_u64(t, 1, comm->db_id);
604 tuple_set_u64(t, 2, thread->db_id);
606 call_object(tables->comm_thread_handler, t, "comm_thread_table");
613 static int python_export_dso(struct db_export *dbe, struct dso *dso,
614 struct machine *machine)
616 struct tables *tables = container_of(dbe, struct tables, dbe);
617 char sbuild_id[BUILD_ID_SIZE * 2 + 1];
620 build_id__sprintf(dso->build_id, sizeof(dso->build_id), sbuild_id);
624 tuple_set_u64(t, 0, dso->db_id);
625 tuple_set_u64(t, 1, machine->db_id);
626 tuple_set_string(t, 2, dso->short_name);
627 tuple_set_string(t, 3, dso->long_name);
628 tuple_set_string(t, 4, sbuild_id);
630 call_object(tables->dso_handler, t, "dso_table");
637 static int python_export_symbol(struct db_export *dbe, struct symbol *sym,
640 struct tables *tables = container_of(dbe, struct tables, dbe);
641 u64 *sym_db_id = symbol__priv(sym);
646 tuple_set_u64(t, 0, *sym_db_id);
647 tuple_set_u64(t, 1, dso->db_id);
648 tuple_set_u64(t, 2, sym->start);
649 tuple_set_u64(t, 3, sym->end);
650 tuple_set_s32(t, 4, sym->binding);
651 tuple_set_string(t, 5, sym->name);
653 call_object(tables->symbol_handler, t, "symbol_table");
660 static int python_export_branch_type(struct db_export *dbe, u32 branch_type,
663 struct tables *tables = container_of(dbe, struct tables, dbe);
668 tuple_set_s32(t, 0, branch_type);
669 tuple_set_string(t, 1, name);
671 call_object(tables->branch_type_handler, t, "branch_type_table");
678 static int python_export_sample(struct db_export *dbe,
679 struct export_sample *es)
681 struct tables *tables = container_of(dbe, struct tables, dbe);
686 tuple_set_u64(t, 0, es->db_id);
687 tuple_set_u64(t, 1, es->evsel->db_id);
688 tuple_set_u64(t, 2, es->al->machine->db_id);
689 tuple_set_u64(t, 3, es->al->thread->db_id);
690 tuple_set_u64(t, 4, es->comm_db_id);
691 tuple_set_u64(t, 5, es->dso_db_id);
692 tuple_set_u64(t, 6, es->sym_db_id);
693 tuple_set_u64(t, 7, es->offset);
694 tuple_set_u64(t, 8, es->sample->ip);
695 tuple_set_u64(t, 9, es->sample->time);
696 tuple_set_s32(t, 10, es->sample->cpu);
697 tuple_set_u64(t, 11, es->addr_dso_db_id);
698 tuple_set_u64(t, 12, es->addr_sym_db_id);
699 tuple_set_u64(t, 13, es->addr_offset);
700 tuple_set_u64(t, 14, es->sample->addr);
701 tuple_set_u64(t, 15, es->sample->period);
702 tuple_set_u64(t, 16, es->sample->weight);
703 tuple_set_u64(t, 17, es->sample->transaction);
704 tuple_set_u64(t, 18, es->sample->data_src);
705 tuple_set_s32(t, 19, es->sample->flags & PERF_BRANCH_MASK);
706 tuple_set_s32(t, 20, !!(es->sample->flags & PERF_IP_FLAG_IN_TX));
708 call_object(tables->sample_handler, t, "sample_table");
715 static int python_export_call_path(struct db_export *dbe, struct call_path *cp)
717 struct tables *tables = container_of(dbe, struct tables, dbe);
719 u64 parent_db_id, sym_db_id;
721 parent_db_id = cp->parent ? cp->parent->db_id : 0;
722 sym_db_id = cp->sym ? *(u64 *)symbol__priv(cp->sym) : 0;
726 tuple_set_u64(t, 0, cp->db_id);
727 tuple_set_u64(t, 1, parent_db_id);
728 tuple_set_u64(t, 2, sym_db_id);
729 tuple_set_u64(t, 3, cp->ip);
731 call_object(tables->call_path_handler, t, "call_path_table");
738 static int python_export_call_return(struct db_export *dbe,
739 struct call_return *cr)
741 struct tables *tables = container_of(dbe, struct tables, dbe);
742 u64 comm_db_id = cr->comm ? cr->comm->db_id : 0;
747 tuple_set_u64(t, 0, cr->db_id);
748 tuple_set_u64(t, 1, cr->thread->db_id);
749 tuple_set_u64(t, 2, comm_db_id);
750 tuple_set_u64(t, 3, cr->cp->db_id);
751 tuple_set_u64(t, 4, cr->call_time);
752 tuple_set_u64(t, 5, cr->return_time);
753 tuple_set_u64(t, 6, cr->branch_count);
754 tuple_set_u64(t, 7, cr->call_ref);
755 tuple_set_u64(t, 8, cr->return_ref);
756 tuple_set_u64(t, 9, cr->cp->parent->db_id);
757 tuple_set_s32(t, 10, cr->flags);
759 call_object(tables->call_return_handler, t, "call_return_table");
766 static int python_process_call_return(struct call_return *cr, void *data)
768 struct db_export *dbe = data;
770 return db_export__call_return(dbe, cr);
773 static void python_process_general_event(struct perf_sample *sample,
774 struct perf_evsel *evsel,
775 struct addr_location *al)
777 PyObject *handler, *t, *dict, *callchain, *dict_sample;
778 static char handler_name[64];
782 * Use the MAX_FIELDS to make the function expandable, though
783 * currently there is only one item for the tuple.
785 t = PyTuple_New(MAX_FIELDS);
787 Py_FatalError("couldn't create Python tuple");
791 Py_FatalError("couldn't create Python dictionary");
793 dict_sample = PyDict_New();
795 Py_FatalError("couldn't create Python dictionary");
797 snprintf(handler_name, sizeof(handler_name), "%s", "process_event");
799 handler = get_handler(handler_name);
803 pydict_set_item_string_decref(dict, "ev_name", PyString_FromString(perf_evsel__name(evsel)));
804 pydict_set_item_string_decref(dict, "attr", PyString_FromStringAndSize(
805 (const char *)&evsel->attr, sizeof(evsel->attr)));
807 pydict_set_item_string_decref(dict_sample, "pid",
808 PyInt_FromLong(sample->pid));
809 pydict_set_item_string_decref(dict_sample, "tid",
810 PyInt_FromLong(sample->tid));
811 pydict_set_item_string_decref(dict_sample, "cpu",
812 PyInt_FromLong(sample->cpu));
813 pydict_set_item_string_decref(dict_sample, "ip",
814 PyLong_FromUnsignedLongLong(sample->ip));
815 pydict_set_item_string_decref(dict_sample, "time",
816 PyLong_FromUnsignedLongLong(sample->time));
817 pydict_set_item_string_decref(dict_sample, "period",
818 PyLong_FromUnsignedLongLong(sample->period));
819 pydict_set_item_string_decref(dict, "sample", dict_sample);
821 pydict_set_item_string_decref(dict, "raw_buf", PyString_FromStringAndSize(
822 (const char *)sample->raw_data, sample->raw_size));
823 pydict_set_item_string_decref(dict, "comm",
824 PyString_FromString(thread__comm_str(al->thread)));
826 pydict_set_item_string_decref(dict, "dso",
827 PyString_FromString(al->map->dso->name));
830 pydict_set_item_string_decref(dict, "symbol",
831 PyString_FromString(al->sym->name));
835 callchain = python_process_callchain(sample, evsel, al);
836 pydict_set_item_string_decref(dict, "callchain", callchain);
838 PyTuple_SetItem(t, n++, dict);
839 if (_PyTuple_Resize(&t, n) == -1)
840 Py_FatalError("error resizing Python tuple");
842 call_object(handler, t, handler_name);
848 static void python_process_event(union perf_event *event,
849 struct perf_sample *sample,
850 struct perf_evsel *evsel,
851 struct addr_location *al)
853 struct tables *tables = &tables_global;
855 switch (evsel->attr.type) {
856 case PERF_TYPE_TRACEPOINT:
857 python_process_tracepoint(sample, evsel, al);
859 /* Reserve for future process_hw/sw/raw APIs */
861 if (tables->db_export_mode)
862 db_export__sample(&tables->dbe, event, sample, evsel, al);
864 python_process_general_event(sample, evsel, al);
868 static void get_handler_name(char *str, size_t size,
869 struct perf_evsel *evsel)
873 scnprintf(str, size, "stat__%s", perf_evsel__name(evsel));
875 while ((p = strchr(p, ':'))) {
882 process_stat(struct perf_evsel *counter, int cpu, int thread, u64 tstamp,
883 struct perf_counts_values *count)
885 PyObject *handler, *t;
886 static char handler_name[256];
889 t = PyTuple_New(MAX_FIELDS);
891 Py_FatalError("couldn't create Python tuple");
893 get_handler_name(handler_name, sizeof(handler_name),
896 handler = get_handler(handler_name);
898 pr_debug("can't find python handler %s\n", handler_name);
902 PyTuple_SetItem(t, n++, PyInt_FromLong(cpu));
903 PyTuple_SetItem(t, n++, PyInt_FromLong(thread));
905 tuple_set_u64(t, n++, tstamp);
906 tuple_set_u64(t, n++, count->val);
907 tuple_set_u64(t, n++, count->ena);
908 tuple_set_u64(t, n++, count->run);
910 if (_PyTuple_Resize(&t, n) == -1)
911 Py_FatalError("error resizing Python tuple");
913 call_object(handler, t, handler_name);
918 static void python_process_stat(struct perf_stat_config *config,
919 struct perf_evsel *counter, u64 tstamp)
921 struct thread_map *threads = counter->threads;
922 struct cpu_map *cpus = counter->cpus;
925 if (config->aggr_mode == AGGR_GLOBAL) {
926 process_stat(counter, -1, -1, tstamp,
927 &counter->counts->aggr);
931 for (thread = 0; thread < threads->nr; thread++) {
932 for (cpu = 0; cpu < cpus->nr; cpu++) {
933 process_stat(counter, cpus->map[cpu],
934 thread_map__pid(threads, thread), tstamp,
935 perf_counts(counter->counts, cpu, thread));
940 static void python_process_stat_interval(u64 tstamp)
942 PyObject *handler, *t;
943 static const char handler_name[] = "stat__interval";
946 t = PyTuple_New(MAX_FIELDS);
948 Py_FatalError("couldn't create Python tuple");
950 handler = get_handler(handler_name);
952 pr_debug("can't find python handler %s\n", handler_name);
956 tuple_set_u64(t, n++, tstamp);
958 if (_PyTuple_Resize(&t, n) == -1)
959 Py_FatalError("error resizing Python tuple");
961 call_object(handler, t, handler_name);
966 static int run_start_sub(void)
968 main_module = PyImport_AddModule("__main__");
969 if (main_module == NULL)
971 Py_INCREF(main_module);
973 main_dict = PyModule_GetDict(main_module);
974 if (main_dict == NULL)
976 Py_INCREF(main_dict);
978 try_call_object("trace_begin", NULL);
983 Py_XDECREF(main_dict);
984 Py_XDECREF(main_module);
988 #define SET_TABLE_HANDLER_(name, handler_name, table_name) do { \
989 tables->handler_name = get_handler(#table_name); \
990 if (tables->handler_name) \
991 tables->dbe.export_ ## name = python_export_ ## name; \
994 #define SET_TABLE_HANDLER(name) \
995 SET_TABLE_HANDLER_(name, name ## _handler, name ## _table)
997 static void set_table_handlers(struct tables *tables)
999 const char *perf_db_export_mode = "perf_db_export_mode";
1000 const char *perf_db_export_calls = "perf_db_export_calls";
1001 PyObject *db_export_mode, *db_export_calls;
1002 bool export_calls = false;
1005 memset(tables, 0, sizeof(struct tables));
1006 if (db_export__init(&tables->dbe))
1007 Py_FatalError("failed to initialize export");
1009 db_export_mode = PyDict_GetItemString(main_dict, perf_db_export_mode);
1010 if (!db_export_mode)
1013 ret = PyObject_IsTrue(db_export_mode);
1015 handler_call_die(perf_db_export_mode);
1019 tables->dbe.crp = NULL;
1020 db_export_calls = PyDict_GetItemString(main_dict, perf_db_export_calls);
1021 if (db_export_calls) {
1022 ret = PyObject_IsTrue(db_export_calls);
1024 handler_call_die(perf_db_export_calls);
1025 export_calls = !!ret;
1030 call_return_processor__new(python_process_call_return,
1032 if (!tables->dbe.crp)
1033 Py_FatalError("failed to create calls processor");
1036 tables->db_export_mode = true;
1038 * Reserve per symbol space for symbol->db_id via symbol__priv()
1040 symbol_conf.priv_size = sizeof(u64);
1042 SET_TABLE_HANDLER(evsel);
1043 SET_TABLE_HANDLER(machine);
1044 SET_TABLE_HANDLER(thread);
1045 SET_TABLE_HANDLER(comm);
1046 SET_TABLE_HANDLER(comm_thread);
1047 SET_TABLE_HANDLER(dso);
1048 SET_TABLE_HANDLER(symbol);
1049 SET_TABLE_HANDLER(branch_type);
1050 SET_TABLE_HANDLER(sample);
1051 SET_TABLE_HANDLER(call_path);
1052 SET_TABLE_HANDLER(call_return);
1056 * Start trace script
1058 static int python_start_script(const char *script, int argc, const char **argv)
1060 struct tables *tables = &tables_global;
1061 const char **command_line;
1066 command_line = malloc((argc + 1) * sizeof(const char *));
1067 command_line[0] = script;
1068 for (i = 1; i < argc + 1; i++)
1069 command_line[i] = argv[i - 1];
1073 initperf_trace_context();
1075 PySys_SetArgv(argc + 1, (char **)command_line);
1077 fp = fopen(script, "r");
1079 sprintf(buf, "Can't open python script \"%s\"", script);
1085 err = PyRun_SimpleFile(fp, script);
1087 fprintf(stderr, "Error running python script %s\n", script);
1091 err = run_start_sub();
1093 fprintf(stderr, "Error starting python script %s\n", script);
1097 set_table_handlers(tables);
1099 if (tables->db_export_mode) {
1100 err = db_export__branch_types(&tables->dbe);
1115 static int python_flush_script(void)
1117 struct tables *tables = &tables_global;
1119 return db_export__flush(&tables->dbe);
1125 static int python_stop_script(void)
1127 struct tables *tables = &tables_global;
1129 try_call_object("trace_end", NULL);
1131 db_export__exit(&tables->dbe);
1133 Py_XDECREF(main_dict);
1134 Py_XDECREF(main_module);
1140 static int python_generate_script(struct pevent *pevent, const char *outfile)
1142 struct event_format *event = NULL;
1143 struct format_field *f;
1144 char fname[PATH_MAX];
1145 int not_first, count;
1148 sprintf(fname, "%s.py", outfile);
1149 ofp = fopen(fname, "w");
1151 fprintf(stderr, "couldn't open %s\n", fname);
1154 fprintf(ofp, "# perf script event handlers, "
1155 "generated by perf script -g python\n");
1157 fprintf(ofp, "# Licensed under the terms of the GNU GPL"
1158 " License version 2\n\n");
1160 fprintf(ofp, "# The common_* event handler fields are the most useful "
1161 "fields common to\n");
1163 fprintf(ofp, "# all events. They don't necessarily correspond to "
1164 "the 'common_*' fields\n");
1166 fprintf(ofp, "# in the format files. Those fields not available as "
1167 "handler params can\n");
1169 fprintf(ofp, "# be retrieved using Python functions of the form "
1170 "common_*(context).\n");
1172 fprintf(ofp, "# See the perf-trace-python Documentation for the list "
1173 "of available functions.\n\n");
1175 fprintf(ofp, "import os\n");
1176 fprintf(ofp, "import sys\n\n");
1178 fprintf(ofp, "sys.path.append(os.environ['PERF_EXEC_PATH'] + \\\n");
1179 fprintf(ofp, "\t'/scripts/python/Perf-Trace-Util/lib/Perf/Trace')\n");
1180 fprintf(ofp, "\nfrom perf_trace_context import *\n");
1181 fprintf(ofp, "from Core import *\n\n\n");
1183 fprintf(ofp, "def trace_begin():\n");
1184 fprintf(ofp, "\tprint \"in trace_begin\"\n\n");
1186 fprintf(ofp, "def trace_end():\n");
1187 fprintf(ofp, "\tprint \"in trace_end\"\n\n");
1189 while ((event = trace_find_next_event(pevent, event))) {
1190 fprintf(ofp, "def %s__%s(", event->system, event->name);
1191 fprintf(ofp, "event_name, ");
1192 fprintf(ofp, "context, ");
1193 fprintf(ofp, "common_cpu,\n");
1194 fprintf(ofp, "\tcommon_secs, ");
1195 fprintf(ofp, "common_nsecs, ");
1196 fprintf(ofp, "common_pid, ");
1197 fprintf(ofp, "common_comm,\n\t");
1198 fprintf(ofp, "common_callchain, ");
1203 for (f = event->format.fields; f; f = f->next) {
1206 if (++count % 5 == 0)
1207 fprintf(ofp, "\n\t");
1209 fprintf(ofp, "%s", f->name);
1211 fprintf(ofp, "):\n");
1213 fprintf(ofp, "\t\tprint_header(event_name, common_cpu, "
1214 "common_secs, common_nsecs,\n\t\t\t"
1215 "common_pid, common_comm)\n\n");
1217 fprintf(ofp, "\t\tprint \"");
1222 for (f = event->format.fields; f; f = f->next) {
1225 if (count && count % 3 == 0) {
1226 fprintf(ofp, "\" \\\n\t\t\"");
1230 fprintf(ofp, "%s=", f->name);
1231 if (f->flags & FIELD_IS_STRING ||
1232 f->flags & FIELD_IS_FLAG ||
1233 f->flags & FIELD_IS_ARRAY ||
1234 f->flags & FIELD_IS_SYMBOLIC)
1235 fprintf(ofp, "%%s");
1236 else if (f->flags & FIELD_IS_SIGNED)
1237 fprintf(ofp, "%%d");
1239 fprintf(ofp, "%%u");
1242 fprintf(ofp, "\" %% \\\n\t\t(");
1247 for (f = event->format.fields; f; f = f->next) {
1251 if (++count % 5 == 0)
1252 fprintf(ofp, "\n\t\t");
1254 if (f->flags & FIELD_IS_FLAG) {
1255 if ((count - 1) % 5 != 0) {
1256 fprintf(ofp, "\n\t\t");
1259 fprintf(ofp, "flag_str(\"");
1260 fprintf(ofp, "%s__%s\", ", event->system,
1262 fprintf(ofp, "\"%s\", %s)", f->name,
1264 } else if (f->flags & FIELD_IS_SYMBOLIC) {
1265 if ((count - 1) % 5 != 0) {
1266 fprintf(ofp, "\n\t\t");
1269 fprintf(ofp, "symbol_str(\"");
1270 fprintf(ofp, "%s__%s\", ", event->system,
1272 fprintf(ofp, "\"%s\", %s)", f->name,
1275 fprintf(ofp, "%s", f->name);
1278 fprintf(ofp, ")\n\n");
1280 fprintf(ofp, "\t\tfor node in common_callchain:");
1281 fprintf(ofp, "\n\t\t\tif 'sym' in node:");
1282 fprintf(ofp, "\n\t\t\t\tprint \"\\t[%%x] %%s\" %% (node['ip'], node['sym']['name'])");
1283 fprintf(ofp, "\n\t\t\telse:");
1284 fprintf(ofp, "\n\t\t\t\tprint \"\t[%%x]\" %% (node['ip'])\n\n");
1285 fprintf(ofp, "\t\tprint \"\\n\"\n\n");
1289 fprintf(ofp, "def trace_unhandled(event_name, context, "
1290 "event_fields_dict):\n");
1292 fprintf(ofp, "\t\tprint ' '.join(['%%s=%%s'%%(k,str(v))"
1293 "for k,v in sorted(event_fields_dict.items())])\n\n");
1295 fprintf(ofp, "def print_header("
1296 "event_name, cpu, secs, nsecs, pid, comm):\n"
1297 "\tprint \"%%-20s %%5u %%05u.%%09u %%8u %%-20s \" %% \\\n\t"
1298 "(event_name, cpu, secs, nsecs, pid, comm),\n");
1302 fprintf(stderr, "generated Python script: %s\n", fname);
1307 struct scripting_ops python_scripting_ops = {
1309 .start_script = python_start_script,
1310 .flush_script = python_flush_script,
1311 .stop_script = python_stop_script,
1312 .process_event = python_process_event,
1313 .process_stat = python_process_stat,
1314 .process_stat_interval = python_process_stat_interval,
1315 .generate_script = python_generate_script,