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 "../call-path.h"
45 #include "thread_map.h"
49 PyMODINIT_FUNC initperf_trace_context(void);
51 #define TRACE_EVENT_TYPE_MAX \
52 ((1 << (sizeof(unsigned short) * 8)) - 1)
54 static DECLARE_BITMAP(events_defined, TRACE_EVENT_TYPE_MAX);
57 #define N_COMMON_FIELDS 7
59 extern struct scripting_context *scripting_context;
61 static char *cur_field_name;
62 static int zero_flag_atom;
64 static PyObject *main_module, *main_dict;
68 PyObject *evsel_handler;
69 PyObject *machine_handler;
70 PyObject *thread_handler;
71 PyObject *comm_handler;
72 PyObject *comm_thread_handler;
73 PyObject *dso_handler;
74 PyObject *symbol_handler;
75 PyObject *branch_type_handler;
76 PyObject *sample_handler;
77 PyObject *call_path_handler;
78 PyObject *call_return_handler;
82 static struct tables tables_global;
84 static void handler_call_die(const char *handler_name) NORETURN;
85 static void handler_call_die(const char *handler_name)
88 Py_FatalError("problem in Python trace event handler");
89 // Py_FatalError does not return
90 // but we have to make the compiler happy
95 * Insert val into into the dictionary and decrement the reference counter.
96 * This is necessary for dictionaries since PyDict_SetItemString() does not
97 * steal a reference, as opposed to PyTuple_SetItem().
99 static void pydict_set_item_string_decref(PyObject *dict, const char *key, PyObject *val)
101 PyDict_SetItemString(dict, key, val);
105 static PyObject *get_handler(const char *handler_name)
109 handler = PyDict_GetItemString(main_dict, handler_name);
110 if (handler && !PyCallable_Check(handler))
115 static void call_object(PyObject *handler, PyObject *args, const char *die_msg)
119 retval = PyObject_CallObject(handler, args);
121 handler_call_die(die_msg);
125 static void try_call_object(const char *handler_name, PyObject *args)
129 handler = get_handler(handler_name);
131 call_object(handler, args, handler_name);
134 static void define_value(enum print_arg_type field_type,
136 const char *field_name,
137 const char *field_value,
138 const char *field_str)
140 const char *handler_name = "define_flag_value";
142 unsigned long long value;
145 if (field_type == PRINT_SYMBOL)
146 handler_name = "define_symbolic_value";
150 Py_FatalError("couldn't create Python tuple");
152 value = eval_flag(field_value);
154 PyTuple_SetItem(t, n++, PyString_FromString(ev_name));
155 PyTuple_SetItem(t, n++, PyString_FromString(field_name));
156 PyTuple_SetItem(t, n++, PyInt_FromLong(value));
157 PyTuple_SetItem(t, n++, PyString_FromString(field_str));
159 try_call_object(handler_name, t);
164 static void define_values(enum print_arg_type field_type,
165 struct print_flag_sym *field,
167 const char *field_name)
169 define_value(field_type, ev_name, field_name, field->value,
173 define_values(field_type, field->next, ev_name, field_name);
176 static void define_field(enum print_arg_type field_type,
178 const char *field_name,
181 const char *handler_name = "define_flag_field";
185 if (field_type == PRINT_SYMBOL)
186 handler_name = "define_symbolic_field";
188 if (field_type == PRINT_FLAGS)
193 Py_FatalError("couldn't create Python tuple");
195 PyTuple_SetItem(t, n++, PyString_FromString(ev_name));
196 PyTuple_SetItem(t, n++, PyString_FromString(field_name));
197 if (field_type == PRINT_FLAGS)
198 PyTuple_SetItem(t, n++, PyString_FromString(delim));
200 try_call_object(handler_name, t);
205 static void define_event_symbols(struct event_format *event,
207 struct print_arg *args)
212 switch (args->type) {
216 define_value(PRINT_FLAGS, ev_name, cur_field_name, "0",
221 free(cur_field_name);
222 cur_field_name = strdup(args->field.name);
225 define_event_symbols(event, ev_name, args->flags.field);
226 define_field(PRINT_FLAGS, ev_name, cur_field_name,
228 define_values(PRINT_FLAGS, args->flags.flags, ev_name,
232 define_event_symbols(event, ev_name, args->symbol.field);
233 define_field(PRINT_SYMBOL, ev_name, cur_field_name, NULL);
234 define_values(PRINT_SYMBOL, args->symbol.symbols, ev_name,
238 define_event_symbols(event, ev_name, args->hex.field);
239 define_event_symbols(event, ev_name, args->hex.size);
241 case PRINT_INT_ARRAY:
242 define_event_symbols(event, ev_name, args->int_array.field);
243 define_event_symbols(event, ev_name, args->int_array.count);
244 define_event_symbols(event, ev_name, args->int_array.el_size);
249 define_event_symbols(event, ev_name, args->typecast.item);
252 if (strcmp(args->op.op, ":") == 0)
254 define_event_symbols(event, ev_name, args->op.left);
255 define_event_symbols(event, ev_name, args->op.right);
258 /* gcc warns for these? */
260 case PRINT_DYNAMIC_ARRAY:
261 case PRINT_DYNAMIC_ARRAY_LEN:
264 /* we should warn... */
269 define_event_symbols(event, ev_name, args->next);
272 static PyObject *get_field_numeric_entry(struct event_format *event,
273 struct format_field *field, void *data)
275 bool is_array = field->flags & FIELD_IS_ARRAY;
276 PyObject *obj, *list = NULL;
277 unsigned long long val;
278 unsigned int item_size, n_items, i;
281 list = PyList_New(field->arraylen);
282 item_size = field->size / field->arraylen;
283 n_items = field->arraylen;
285 item_size = field->size;
289 for (i = 0; i < n_items; i++) {
291 val = read_size(event, data + field->offset + i * item_size,
293 if (field->flags & FIELD_IS_SIGNED) {
294 if ((long long)val >= LONG_MIN &&
295 (long long)val <= LONG_MAX)
296 obj = PyInt_FromLong(val);
298 obj = PyLong_FromLongLong(val);
301 obj = PyInt_FromLong(val);
303 obj = PyLong_FromUnsignedLongLong(val);
306 PyList_SET_ITEM(list, i, obj);
314 static PyObject *python_process_callchain(struct perf_sample *sample,
315 struct perf_evsel *evsel,
316 struct addr_location *al)
320 pylist = PyList_New(0);
322 Py_FatalError("couldn't create Python list");
324 if (!symbol_conf.use_callchain || !sample->callchain)
327 if (thread__resolve_callchain(al->thread, &callchain_cursor, evsel,
329 scripting_max_stack) != 0) {
330 pr_err("Failed to resolve callchain. Skipping\n");
333 callchain_cursor_commit(&callchain_cursor);
338 struct callchain_cursor_node *node;
339 node = callchain_cursor_current(&callchain_cursor);
343 pyelem = PyDict_New();
345 Py_FatalError("couldn't create Python dictionary");
348 pydict_set_item_string_decref(pyelem, "ip",
349 PyLong_FromUnsignedLongLong(node->ip));
352 PyObject *pysym = PyDict_New();
354 Py_FatalError("couldn't create Python dictionary");
355 pydict_set_item_string_decref(pysym, "start",
356 PyLong_FromUnsignedLongLong(node->sym->start));
357 pydict_set_item_string_decref(pysym, "end",
358 PyLong_FromUnsignedLongLong(node->sym->end));
359 pydict_set_item_string_decref(pysym, "binding",
360 PyInt_FromLong(node->sym->binding));
361 pydict_set_item_string_decref(pysym, "name",
362 PyString_FromStringAndSize(node->sym->name,
363 node->sym->namelen));
364 pydict_set_item_string_decref(pyelem, "sym", pysym);
368 struct map *map = node->map;
369 const char *dsoname = "[unknown]";
370 if (map && map->dso && (map->dso->name || map->dso->long_name)) {
371 if (symbol_conf.show_kernel_path && map->dso->long_name)
372 dsoname = map->dso->long_name;
373 else if (map->dso->name)
374 dsoname = map->dso->name;
376 pydict_set_item_string_decref(pyelem, "dso",
377 PyString_FromString(dsoname));
380 callchain_cursor_advance(&callchain_cursor);
381 PyList_Append(pylist, pyelem);
390 static void python_process_tracepoint(struct perf_sample *sample,
391 struct perf_evsel *evsel,
392 struct addr_location *al)
394 struct event_format *event = evsel->tp_format;
395 PyObject *handler, *context, *t, *obj, *callchain;
396 PyObject *dict = NULL;
397 static char handler_name[256];
398 struct format_field *field;
402 int cpu = sample->cpu;
403 void *data = sample->raw_data;
404 unsigned long long nsecs = sample->time;
405 const char *comm = thread__comm_str(al->thread);
407 t = PyTuple_New(MAX_FIELDS);
409 Py_FatalError("couldn't create Python tuple");
412 snprintf(handler_name, sizeof(handler_name),
413 "ug! no event found for type %" PRIu64, (u64)evsel->attr.config);
414 Py_FatalError(handler_name);
417 pid = raw_field_value(event, "common_pid", data);
419 sprintf(handler_name, "%s__%s", event->system, event->name);
421 if (!test_and_set_bit(event->id, events_defined))
422 define_event_symbols(event, handler_name, event->print_fmt.args);
424 handler = get_handler(handler_name);
428 Py_FatalError("couldn't create Python dict");
430 s = nsecs / NSECS_PER_SEC;
431 ns = nsecs - s * NSECS_PER_SEC;
433 scripting_context->event_data = data;
434 scripting_context->pevent = evsel->tp_format->pevent;
436 context = PyCObject_FromVoidPtr(scripting_context, NULL);
438 PyTuple_SetItem(t, n++, PyString_FromString(handler_name));
439 PyTuple_SetItem(t, n++, context);
442 callchain = python_process_callchain(sample, evsel, al);
445 PyTuple_SetItem(t, n++, PyInt_FromLong(cpu));
446 PyTuple_SetItem(t, n++, PyInt_FromLong(s));
447 PyTuple_SetItem(t, n++, PyInt_FromLong(ns));
448 PyTuple_SetItem(t, n++, PyInt_FromLong(pid));
449 PyTuple_SetItem(t, n++, PyString_FromString(comm));
450 PyTuple_SetItem(t, n++, callchain);
452 pydict_set_item_string_decref(dict, "common_cpu", PyInt_FromLong(cpu));
453 pydict_set_item_string_decref(dict, "common_s", PyInt_FromLong(s));
454 pydict_set_item_string_decref(dict, "common_ns", PyInt_FromLong(ns));
455 pydict_set_item_string_decref(dict, "common_pid", PyInt_FromLong(pid));
456 pydict_set_item_string_decref(dict, "common_comm", PyString_FromString(comm));
457 pydict_set_item_string_decref(dict, "common_callchain", callchain);
459 for (field = event->format.fields; field; field = field->next) {
460 if (field->flags & FIELD_IS_STRING) {
462 if (field->flags & FIELD_IS_DYNAMIC) {
463 offset = *(int *)(data + field->offset);
466 offset = field->offset;
467 obj = PyString_FromString((char *)data + offset);
468 } else { /* FIELD_IS_NUMERIC */
469 obj = get_field_numeric_entry(event, field, data);
472 PyTuple_SetItem(t, n++, obj);
474 pydict_set_item_string_decref(dict, field->name, obj);
479 PyTuple_SetItem(t, n++, dict);
481 if (_PyTuple_Resize(&t, n) == -1)
482 Py_FatalError("error resizing Python tuple");
485 call_object(handler, t, handler_name);
487 try_call_object("trace_unhandled", t);
494 static PyObject *tuple_new(unsigned int sz)
500 Py_FatalError("couldn't create Python tuple");
504 static int tuple_set_u64(PyObject *t, unsigned int pos, u64 val)
506 #if BITS_PER_LONG == 64
507 return PyTuple_SetItem(t, pos, PyInt_FromLong(val));
509 #if BITS_PER_LONG == 32
510 return PyTuple_SetItem(t, pos, PyLong_FromLongLong(val));
514 static int tuple_set_s32(PyObject *t, unsigned int pos, s32 val)
516 return PyTuple_SetItem(t, pos, PyInt_FromLong(val));
519 static int tuple_set_string(PyObject *t, unsigned int pos, const char *s)
521 return PyTuple_SetItem(t, pos, PyString_FromString(s));
524 static int python_export_evsel(struct db_export *dbe, struct perf_evsel *evsel)
526 struct tables *tables = container_of(dbe, struct tables, dbe);
531 tuple_set_u64(t, 0, evsel->db_id);
532 tuple_set_string(t, 1, perf_evsel__name(evsel));
534 call_object(tables->evsel_handler, t, "evsel_table");
541 static int python_export_machine(struct db_export *dbe,
542 struct machine *machine)
544 struct tables *tables = container_of(dbe, struct tables, dbe);
549 tuple_set_u64(t, 0, machine->db_id);
550 tuple_set_s32(t, 1, machine->pid);
551 tuple_set_string(t, 2, machine->root_dir ? machine->root_dir : "");
553 call_object(tables->machine_handler, t, "machine_table");
560 static int python_export_thread(struct db_export *dbe, struct thread *thread,
561 u64 main_thread_db_id, struct machine *machine)
563 struct tables *tables = container_of(dbe, struct tables, dbe);
568 tuple_set_u64(t, 0, thread->db_id);
569 tuple_set_u64(t, 1, machine->db_id);
570 tuple_set_u64(t, 2, main_thread_db_id);
571 tuple_set_s32(t, 3, thread->pid_);
572 tuple_set_s32(t, 4, thread->tid);
574 call_object(tables->thread_handler, t, "thread_table");
581 static int python_export_comm(struct db_export *dbe, struct comm *comm)
583 struct tables *tables = container_of(dbe, struct tables, dbe);
588 tuple_set_u64(t, 0, comm->db_id);
589 tuple_set_string(t, 1, comm__str(comm));
591 call_object(tables->comm_handler, t, "comm_table");
598 static int python_export_comm_thread(struct db_export *dbe, u64 db_id,
599 struct comm *comm, struct thread *thread)
601 struct tables *tables = container_of(dbe, struct tables, dbe);
606 tuple_set_u64(t, 0, db_id);
607 tuple_set_u64(t, 1, comm->db_id);
608 tuple_set_u64(t, 2, thread->db_id);
610 call_object(tables->comm_thread_handler, t, "comm_thread_table");
617 static int python_export_dso(struct db_export *dbe, struct dso *dso,
618 struct machine *machine)
620 struct tables *tables = container_of(dbe, struct tables, dbe);
621 char sbuild_id[SBUILD_ID_SIZE];
624 build_id__sprintf(dso->build_id, sizeof(dso->build_id), sbuild_id);
628 tuple_set_u64(t, 0, dso->db_id);
629 tuple_set_u64(t, 1, machine->db_id);
630 tuple_set_string(t, 2, dso->short_name);
631 tuple_set_string(t, 3, dso->long_name);
632 tuple_set_string(t, 4, sbuild_id);
634 call_object(tables->dso_handler, t, "dso_table");
641 static int python_export_symbol(struct db_export *dbe, struct symbol *sym,
644 struct tables *tables = container_of(dbe, struct tables, dbe);
645 u64 *sym_db_id = symbol__priv(sym);
650 tuple_set_u64(t, 0, *sym_db_id);
651 tuple_set_u64(t, 1, dso->db_id);
652 tuple_set_u64(t, 2, sym->start);
653 tuple_set_u64(t, 3, sym->end);
654 tuple_set_s32(t, 4, sym->binding);
655 tuple_set_string(t, 5, sym->name);
657 call_object(tables->symbol_handler, t, "symbol_table");
664 static int python_export_branch_type(struct db_export *dbe, u32 branch_type,
667 struct tables *tables = container_of(dbe, struct tables, dbe);
672 tuple_set_s32(t, 0, branch_type);
673 tuple_set_string(t, 1, name);
675 call_object(tables->branch_type_handler, t, "branch_type_table");
682 static int python_export_sample(struct db_export *dbe,
683 struct export_sample *es)
685 struct tables *tables = container_of(dbe, struct tables, dbe);
690 tuple_set_u64(t, 0, es->db_id);
691 tuple_set_u64(t, 1, es->evsel->db_id);
692 tuple_set_u64(t, 2, es->al->machine->db_id);
693 tuple_set_u64(t, 3, es->al->thread->db_id);
694 tuple_set_u64(t, 4, es->comm_db_id);
695 tuple_set_u64(t, 5, es->dso_db_id);
696 tuple_set_u64(t, 6, es->sym_db_id);
697 tuple_set_u64(t, 7, es->offset);
698 tuple_set_u64(t, 8, es->sample->ip);
699 tuple_set_u64(t, 9, es->sample->time);
700 tuple_set_s32(t, 10, es->sample->cpu);
701 tuple_set_u64(t, 11, es->addr_dso_db_id);
702 tuple_set_u64(t, 12, es->addr_sym_db_id);
703 tuple_set_u64(t, 13, es->addr_offset);
704 tuple_set_u64(t, 14, es->sample->addr);
705 tuple_set_u64(t, 15, es->sample->period);
706 tuple_set_u64(t, 16, es->sample->weight);
707 tuple_set_u64(t, 17, es->sample->transaction);
708 tuple_set_u64(t, 18, es->sample->data_src);
709 tuple_set_s32(t, 19, es->sample->flags & PERF_BRANCH_MASK);
710 tuple_set_s32(t, 20, !!(es->sample->flags & PERF_IP_FLAG_IN_TX));
711 tuple_set_u64(t, 21, es->call_path_id);
713 call_object(tables->sample_handler, t, "sample_table");
720 static int python_export_call_path(struct db_export *dbe, struct call_path *cp)
722 struct tables *tables = container_of(dbe, struct tables, dbe);
724 u64 parent_db_id, sym_db_id;
726 parent_db_id = cp->parent ? cp->parent->db_id : 0;
727 sym_db_id = cp->sym ? *(u64 *)symbol__priv(cp->sym) : 0;
731 tuple_set_u64(t, 0, cp->db_id);
732 tuple_set_u64(t, 1, parent_db_id);
733 tuple_set_u64(t, 2, sym_db_id);
734 tuple_set_u64(t, 3, cp->ip);
736 call_object(tables->call_path_handler, t, "call_path_table");
743 static int python_export_call_return(struct db_export *dbe,
744 struct call_return *cr)
746 struct tables *tables = container_of(dbe, struct tables, dbe);
747 u64 comm_db_id = cr->comm ? cr->comm->db_id : 0;
752 tuple_set_u64(t, 0, cr->db_id);
753 tuple_set_u64(t, 1, cr->thread->db_id);
754 tuple_set_u64(t, 2, comm_db_id);
755 tuple_set_u64(t, 3, cr->cp->db_id);
756 tuple_set_u64(t, 4, cr->call_time);
757 tuple_set_u64(t, 5, cr->return_time);
758 tuple_set_u64(t, 6, cr->branch_count);
759 tuple_set_u64(t, 7, cr->call_ref);
760 tuple_set_u64(t, 8, cr->return_ref);
761 tuple_set_u64(t, 9, cr->cp->parent->db_id);
762 tuple_set_s32(t, 10, cr->flags);
764 call_object(tables->call_return_handler, t, "call_return_table");
771 static int python_process_call_return(struct call_return *cr, void *data)
773 struct db_export *dbe = data;
775 return db_export__call_return(dbe, cr);
778 static void python_process_general_event(struct perf_sample *sample,
779 struct perf_evsel *evsel,
780 struct addr_location *al)
782 PyObject *handler, *t, *dict, *callchain, *dict_sample;
783 static char handler_name[64];
787 * Use the MAX_FIELDS to make the function expandable, though
788 * currently there is only one item for the tuple.
790 t = PyTuple_New(MAX_FIELDS);
792 Py_FatalError("couldn't create Python tuple");
796 Py_FatalError("couldn't create Python dictionary");
798 dict_sample = PyDict_New();
800 Py_FatalError("couldn't create Python dictionary");
802 snprintf(handler_name, sizeof(handler_name), "%s", "process_event");
804 handler = get_handler(handler_name);
808 pydict_set_item_string_decref(dict, "ev_name", PyString_FromString(perf_evsel__name(evsel)));
809 pydict_set_item_string_decref(dict, "attr", PyString_FromStringAndSize(
810 (const char *)&evsel->attr, sizeof(evsel->attr)));
812 pydict_set_item_string_decref(dict_sample, "pid",
813 PyInt_FromLong(sample->pid));
814 pydict_set_item_string_decref(dict_sample, "tid",
815 PyInt_FromLong(sample->tid));
816 pydict_set_item_string_decref(dict_sample, "cpu",
817 PyInt_FromLong(sample->cpu));
818 pydict_set_item_string_decref(dict_sample, "ip",
819 PyLong_FromUnsignedLongLong(sample->ip));
820 pydict_set_item_string_decref(dict_sample, "time",
821 PyLong_FromUnsignedLongLong(sample->time));
822 pydict_set_item_string_decref(dict_sample, "period",
823 PyLong_FromUnsignedLongLong(sample->period));
824 pydict_set_item_string_decref(dict, "sample", dict_sample);
826 pydict_set_item_string_decref(dict, "raw_buf", PyString_FromStringAndSize(
827 (const char *)sample->raw_data, sample->raw_size));
828 pydict_set_item_string_decref(dict, "comm",
829 PyString_FromString(thread__comm_str(al->thread)));
831 pydict_set_item_string_decref(dict, "dso",
832 PyString_FromString(al->map->dso->name));
835 pydict_set_item_string_decref(dict, "symbol",
836 PyString_FromString(al->sym->name));
840 callchain = python_process_callchain(sample, evsel, al);
841 pydict_set_item_string_decref(dict, "callchain", callchain);
843 PyTuple_SetItem(t, n++, dict);
844 if (_PyTuple_Resize(&t, n) == -1)
845 Py_FatalError("error resizing Python tuple");
847 call_object(handler, t, handler_name);
853 static void python_process_event(union perf_event *event,
854 struct perf_sample *sample,
855 struct perf_evsel *evsel,
856 struct addr_location *al)
858 struct tables *tables = &tables_global;
860 switch (evsel->attr.type) {
861 case PERF_TYPE_TRACEPOINT:
862 python_process_tracepoint(sample, evsel, al);
864 /* Reserve for future process_hw/sw/raw APIs */
866 if (tables->db_export_mode)
867 db_export__sample(&tables->dbe, event, sample, evsel, al);
869 python_process_general_event(sample, evsel, al);
873 static void get_handler_name(char *str, size_t size,
874 struct perf_evsel *evsel)
878 scnprintf(str, size, "stat__%s", perf_evsel__name(evsel));
880 while ((p = strchr(p, ':'))) {
887 process_stat(struct perf_evsel *counter, int cpu, int thread, u64 tstamp,
888 struct perf_counts_values *count)
890 PyObject *handler, *t;
891 static char handler_name[256];
894 t = PyTuple_New(MAX_FIELDS);
896 Py_FatalError("couldn't create Python tuple");
898 get_handler_name(handler_name, sizeof(handler_name),
901 handler = get_handler(handler_name);
903 pr_debug("can't find python handler %s\n", handler_name);
907 PyTuple_SetItem(t, n++, PyInt_FromLong(cpu));
908 PyTuple_SetItem(t, n++, PyInt_FromLong(thread));
910 tuple_set_u64(t, n++, tstamp);
911 tuple_set_u64(t, n++, count->val);
912 tuple_set_u64(t, n++, count->ena);
913 tuple_set_u64(t, n++, count->run);
915 if (_PyTuple_Resize(&t, n) == -1)
916 Py_FatalError("error resizing Python tuple");
918 call_object(handler, t, handler_name);
923 static void python_process_stat(struct perf_stat_config *config,
924 struct perf_evsel *counter, u64 tstamp)
926 struct thread_map *threads = counter->threads;
927 struct cpu_map *cpus = counter->cpus;
930 if (config->aggr_mode == AGGR_GLOBAL) {
931 process_stat(counter, -1, -1, tstamp,
932 &counter->counts->aggr);
936 for (thread = 0; thread < threads->nr; thread++) {
937 for (cpu = 0; cpu < cpus->nr; cpu++) {
938 process_stat(counter, cpus->map[cpu],
939 thread_map__pid(threads, thread), tstamp,
940 perf_counts(counter->counts, cpu, thread));
945 static void python_process_stat_interval(u64 tstamp)
947 PyObject *handler, *t;
948 static const char handler_name[] = "stat__interval";
951 t = PyTuple_New(MAX_FIELDS);
953 Py_FatalError("couldn't create Python tuple");
955 handler = get_handler(handler_name);
957 pr_debug("can't find python handler %s\n", handler_name);
961 tuple_set_u64(t, n++, tstamp);
963 if (_PyTuple_Resize(&t, n) == -1)
964 Py_FatalError("error resizing Python tuple");
966 call_object(handler, t, handler_name);
971 static int run_start_sub(void)
973 main_module = PyImport_AddModule("__main__");
974 if (main_module == NULL)
976 Py_INCREF(main_module);
978 main_dict = PyModule_GetDict(main_module);
979 if (main_dict == NULL)
981 Py_INCREF(main_dict);
983 try_call_object("trace_begin", NULL);
988 Py_XDECREF(main_dict);
989 Py_XDECREF(main_module);
993 #define SET_TABLE_HANDLER_(name, handler_name, table_name) do { \
994 tables->handler_name = get_handler(#table_name); \
995 if (tables->handler_name) \
996 tables->dbe.export_ ## name = python_export_ ## name; \
999 #define SET_TABLE_HANDLER(name) \
1000 SET_TABLE_HANDLER_(name, name ## _handler, name ## _table)
1002 static void set_table_handlers(struct tables *tables)
1004 const char *perf_db_export_mode = "perf_db_export_mode";
1005 const char *perf_db_export_calls = "perf_db_export_calls";
1006 const char *perf_db_export_callchains = "perf_db_export_callchains";
1007 PyObject *db_export_mode, *db_export_calls, *db_export_callchains;
1008 bool export_calls = false;
1009 bool export_callchains = false;
1012 memset(tables, 0, sizeof(struct tables));
1013 if (db_export__init(&tables->dbe))
1014 Py_FatalError("failed to initialize export");
1016 db_export_mode = PyDict_GetItemString(main_dict, perf_db_export_mode);
1017 if (!db_export_mode)
1020 ret = PyObject_IsTrue(db_export_mode);
1022 handler_call_die(perf_db_export_mode);
1026 /* handle export calls */
1027 tables->dbe.crp = NULL;
1028 db_export_calls = PyDict_GetItemString(main_dict, perf_db_export_calls);
1029 if (db_export_calls) {
1030 ret = PyObject_IsTrue(db_export_calls);
1032 handler_call_die(perf_db_export_calls);
1033 export_calls = !!ret;
1038 call_return_processor__new(python_process_call_return,
1040 if (!tables->dbe.crp)
1041 Py_FatalError("failed to create calls processor");
1044 /* handle export callchains */
1045 tables->dbe.cpr = NULL;
1046 db_export_callchains = PyDict_GetItemString(main_dict,
1047 perf_db_export_callchains);
1048 if (db_export_callchains) {
1049 ret = PyObject_IsTrue(db_export_callchains);
1051 handler_call_die(perf_db_export_callchains);
1052 export_callchains = !!ret;
1055 if (export_callchains) {
1057 * Attempt to use the call path root from the call return
1058 * processor, if the call return processor is in use. Otherwise,
1059 * we allocate a new call path root. This prevents exporting
1060 * duplicate call path ids when both are in use simultaniously.
1062 if (tables->dbe.crp)
1063 tables->dbe.cpr = tables->dbe.crp->cpr;
1065 tables->dbe.cpr = call_path_root__new();
1067 if (!tables->dbe.cpr)
1068 Py_FatalError("failed to create call path root");
1071 tables->db_export_mode = true;
1073 * Reserve per symbol space for symbol->db_id via symbol__priv()
1075 symbol_conf.priv_size = sizeof(u64);
1077 SET_TABLE_HANDLER(evsel);
1078 SET_TABLE_HANDLER(machine);
1079 SET_TABLE_HANDLER(thread);
1080 SET_TABLE_HANDLER(comm);
1081 SET_TABLE_HANDLER(comm_thread);
1082 SET_TABLE_HANDLER(dso);
1083 SET_TABLE_HANDLER(symbol);
1084 SET_TABLE_HANDLER(branch_type);
1085 SET_TABLE_HANDLER(sample);
1086 SET_TABLE_HANDLER(call_path);
1087 SET_TABLE_HANDLER(call_return);
1091 * Start trace script
1093 static int python_start_script(const char *script, int argc, const char **argv)
1095 struct tables *tables = &tables_global;
1096 const char **command_line;
1101 command_line = malloc((argc + 1) * sizeof(const char *));
1102 command_line[0] = script;
1103 for (i = 1; i < argc + 1; i++)
1104 command_line[i] = argv[i - 1];
1108 initperf_trace_context();
1110 PySys_SetArgv(argc + 1, (char **)command_line);
1112 fp = fopen(script, "r");
1114 sprintf(buf, "Can't open python script \"%s\"", script);
1120 err = PyRun_SimpleFile(fp, script);
1122 fprintf(stderr, "Error running python script %s\n", script);
1126 err = run_start_sub();
1128 fprintf(stderr, "Error starting python script %s\n", script);
1132 set_table_handlers(tables);
1134 if (tables->db_export_mode) {
1135 err = db_export__branch_types(&tables->dbe);
1150 static int python_flush_script(void)
1152 struct tables *tables = &tables_global;
1154 return db_export__flush(&tables->dbe);
1160 static int python_stop_script(void)
1162 struct tables *tables = &tables_global;
1164 try_call_object("trace_end", NULL);
1166 db_export__exit(&tables->dbe);
1168 Py_XDECREF(main_dict);
1169 Py_XDECREF(main_module);
1175 static int python_generate_script(struct pevent *pevent, const char *outfile)
1177 struct event_format *event = NULL;
1178 struct format_field *f;
1179 char fname[PATH_MAX];
1180 int not_first, count;
1183 sprintf(fname, "%s.py", outfile);
1184 ofp = fopen(fname, "w");
1186 fprintf(stderr, "couldn't open %s\n", fname);
1189 fprintf(ofp, "# perf script event handlers, "
1190 "generated by perf script -g python\n");
1192 fprintf(ofp, "# Licensed under the terms of the GNU GPL"
1193 " License version 2\n\n");
1195 fprintf(ofp, "# The common_* event handler fields are the most useful "
1196 "fields common to\n");
1198 fprintf(ofp, "# all events. They don't necessarily correspond to "
1199 "the 'common_*' fields\n");
1201 fprintf(ofp, "# in the format files. Those fields not available as "
1202 "handler params can\n");
1204 fprintf(ofp, "# be retrieved using Python functions of the form "
1205 "common_*(context).\n");
1207 fprintf(ofp, "# See the perf-trace-python Documentation for the list "
1208 "of available functions.\n\n");
1210 fprintf(ofp, "import os\n");
1211 fprintf(ofp, "import sys\n\n");
1213 fprintf(ofp, "sys.path.append(os.environ['PERF_EXEC_PATH'] + \\\n");
1214 fprintf(ofp, "\t'/scripts/python/Perf-Trace-Util/lib/Perf/Trace')\n");
1215 fprintf(ofp, "\nfrom perf_trace_context import *\n");
1216 fprintf(ofp, "from Core import *\n\n\n");
1218 fprintf(ofp, "def trace_begin():\n");
1219 fprintf(ofp, "\tprint \"in trace_begin\"\n\n");
1221 fprintf(ofp, "def trace_end():\n");
1222 fprintf(ofp, "\tprint \"in trace_end\"\n\n");
1224 while ((event = trace_find_next_event(pevent, event))) {
1225 fprintf(ofp, "def %s__%s(", event->system, event->name);
1226 fprintf(ofp, "event_name, ");
1227 fprintf(ofp, "context, ");
1228 fprintf(ofp, "common_cpu,\n");
1229 fprintf(ofp, "\tcommon_secs, ");
1230 fprintf(ofp, "common_nsecs, ");
1231 fprintf(ofp, "common_pid, ");
1232 fprintf(ofp, "common_comm,\n\t");
1233 fprintf(ofp, "common_callchain, ");
1238 for (f = event->format.fields; f; f = f->next) {
1241 if (++count % 5 == 0)
1242 fprintf(ofp, "\n\t");
1244 fprintf(ofp, "%s", f->name);
1246 fprintf(ofp, "):\n");
1248 fprintf(ofp, "\t\tprint_header(event_name, common_cpu, "
1249 "common_secs, common_nsecs,\n\t\t\t"
1250 "common_pid, common_comm)\n\n");
1252 fprintf(ofp, "\t\tprint \"");
1257 for (f = event->format.fields; f; f = f->next) {
1260 if (count && count % 3 == 0) {
1261 fprintf(ofp, "\" \\\n\t\t\"");
1265 fprintf(ofp, "%s=", f->name);
1266 if (f->flags & FIELD_IS_STRING ||
1267 f->flags & FIELD_IS_FLAG ||
1268 f->flags & FIELD_IS_ARRAY ||
1269 f->flags & FIELD_IS_SYMBOLIC)
1270 fprintf(ofp, "%%s");
1271 else if (f->flags & FIELD_IS_SIGNED)
1272 fprintf(ofp, "%%d");
1274 fprintf(ofp, "%%u");
1277 fprintf(ofp, "\" %% \\\n\t\t(");
1282 for (f = event->format.fields; f; f = f->next) {
1286 if (++count % 5 == 0)
1287 fprintf(ofp, "\n\t\t");
1289 if (f->flags & FIELD_IS_FLAG) {
1290 if ((count - 1) % 5 != 0) {
1291 fprintf(ofp, "\n\t\t");
1294 fprintf(ofp, "flag_str(\"");
1295 fprintf(ofp, "%s__%s\", ", event->system,
1297 fprintf(ofp, "\"%s\", %s)", f->name,
1299 } else if (f->flags & FIELD_IS_SYMBOLIC) {
1300 if ((count - 1) % 5 != 0) {
1301 fprintf(ofp, "\n\t\t");
1304 fprintf(ofp, "symbol_str(\"");
1305 fprintf(ofp, "%s__%s\", ", event->system,
1307 fprintf(ofp, "\"%s\", %s)", f->name,
1310 fprintf(ofp, "%s", f->name);
1313 fprintf(ofp, ")\n\n");
1315 fprintf(ofp, "\t\tfor node in common_callchain:");
1316 fprintf(ofp, "\n\t\t\tif 'sym' in node:");
1317 fprintf(ofp, "\n\t\t\t\tprint \"\\t[%%x] %%s\" %% (node['ip'], node['sym']['name'])");
1318 fprintf(ofp, "\n\t\t\telse:");
1319 fprintf(ofp, "\n\t\t\t\tprint \"\t[%%x]\" %% (node['ip'])\n\n");
1320 fprintf(ofp, "\t\tprint \"\\n\"\n\n");
1324 fprintf(ofp, "def trace_unhandled(event_name, context, "
1325 "event_fields_dict):\n");
1327 fprintf(ofp, "\t\tprint ' '.join(['%%s=%%s'%%(k,str(v))"
1328 "for k,v in sorted(event_fields_dict.items())])\n\n");
1330 fprintf(ofp, "def print_header("
1331 "event_name, cpu, secs, nsecs, pid, comm):\n"
1332 "\tprint \"%%-20s %%5u %%05u.%%09u %%8u %%-20s \" %% \\\n\t"
1333 "(event_name, cpu, secs, nsecs, pid, comm),\n");
1337 fprintf(stderr, "generated Python script: %s\n", fname);
1342 struct scripting_ops python_scripting_ops = {
1344 .start_script = python_start_script,
1345 .flush_script = python_flush_script,
1346 .stop_script = python_stop_script,
1347 .process_event = python_process_event,
1348 .process_stat = python_process_stat,
1349 .process_stat_interval = python_process_stat_interval,
1350 .generate_script = python_generate_script,