cpython/Modules/_lsprof.c at master · python-emscripten/cpython · GitHub

Repository navigation

History

100

101

102

103

104

105

106

107

108

109

110

111

112

113

114

115

116

117

118

119

120

121

122

123

124

125

126

127

128

129

130

131

132

133

134

135

136

137

138

139

140

141

142

143

144

145

146

147

148

149

150

151

152

153

154

155

156

157

158

159

160

161

162

163

164

165

166

167

168

169

170

171

172

173

174

175

176

177

178

179

180

181

182

183

184

185

186

187

188

189

190

191

192

193

194

195

196

197

198

199

200

201

202

203

204

205

206

207

208

209

210

211

212

213

214

215

216

217

218

219

220

221

222

223

224

225

226

227

228

229

230

231

232

233

234

235

236

237

238

239

240

241

242

243

244

245

246

247

248

249

250

251

252

253

254

255

256

257

258

259

260

261

262

263

264

265

266

267

268

269

270

271

272

273

274

275

276

277

278

279

280

281

282

283

284

285

286

287

288

289

290

291

292

293

294

295

296

297

298

299

300

301

302

303

304

305

306

307

308

309

310

311

312

313

314

315

316

317

318

319

320

321

322

323

324

325

326

327

328

329

330

331

332

333

334

335

336

337

338

339

340

341

342

343

344

345

346

347

348

349

350

351

352

353

354

355

356

357

358

359

360

361

362

363

364

365

366

367

368

369

370

371

372

373

374

375

376

377

378

379

380

381

382

383

384

385

386

387

388

389

390

391

392

393

394

395

396

397

398

399

400

401

402

403

404

405

406

407

408

409

410

411

412

413

414

415

416

417

418

419

420

421

422

423

424

425

426

427

428

429

430

431

432

433

434

435

436

437

438

439

440

441

442

443

444

445

446

447

448

449

450

451

452

453

454

455

456

457

458

459

460

461

462

463

464

465

466

467

468

469

470

471

472

473

474

475

476

477

478

479

480

481

482

483

484

485

486

487

488

489

490

491

492

493

494

495

496

497

498

499

500

501

502

503

504

505

506

507

508

509

510

511

512

513

514

515

516

517

518

519

520

521

522

523

524

525

526

527

528

529

530

531

532

533

534

535

536

537

538

539

540

541

542

543

544

545

546

547

548

549

550

551

552

553

554

555

556

557

558

559

560

561

562

563

564

565

566

567

568

569

570

571

572

573

574

575

576

577

578

579

580

581

582

583

584

585

586

587

588

589

590

591

592

593

594

595

596

597

598

599

600

601

602

603

604

605

606

607

608

609

610

611

612

613

614

615

616

617

618

619

620

621

622

623

624

625

626

627

628

629

630

631

632

633

634

635

636

637

638

639

640

641

642

643

644

645

646

647

648

649

650

651

652

653

654

655

656

657

658

659

660

661

662

663

664

665

666

667

668

669

670

671

672

673

674

675

676

677

678

679

680

681

682

683

684

685

686

687

688

689

690

691

692

693

694

695

696

697

698

699

700

701

702

703

704

705

706

707

708

709

710

711

712

713

714

715

716

717

718

719

720

721

722

723

724

725

726

727

728

729

730

731

732

733

734

735

736

737

738

739

740

741

742

743

744

745

746

747

748

749

750

751

752

753

754

755

756

757

758

759

760

761

762

763

764

765

766

767

768

769

770

771

772

773

774

775

776

777

778

779

780

781

782

783

784

785

786

787

788

789

790

791

792

793

794

795

796

797

798

799

800

801

802

803

804

805

806

807

808

809

810

811

812

813

814

815

816

817

818

819

820

821

822

823

824

825

826

827

828

829

830

831

832

833

834

835

836

837

838

839

840

841

842

843

844

845

846

847

848

849

850

851

852

853

854

855

856

857

858

859

860

861

#include "Python.h"

#include "rotatingtree.h"

/************************************************************/

/* Written by Brett Rosen and Ted Czotter */

struct _ProfilerEntry;

/* represents a function called from another function */

typedef struct _ProfilerSubEntry {

rotating_node_t header;

_PyTime_t tt;

_PyTime_t it;

long callcount;

long recursivecallcount;

long recursionLevel;

} ProfilerSubEntry;

/* represents a function or user defined block */

typedef struct _ProfilerEntry {

rotating_node_t header;

PyObject *userObj; /* PyCodeObject, or a descriptive str for builtins */

_PyTime_t tt; /* total time in this entry */

_PyTime_t it; /* inline time in this entry (not in subcalls) */

long callcount; /* how many times this was called */

long recursivecallcount; /* how many times called recursively */

long recursionLevel;

rotating_node_t *calls;

} ProfilerEntry;

typedef struct _ProfilerContext {

_PyTime_t t0;

_PyTime_t subt;

struct _ProfilerContext *previous;

ProfilerEntry *ctxEntry;

} ProfilerContext;

typedef struct {

PyObject_HEAD

rotating_node_t *profilerEntries;

ProfilerContext *currentProfilerContext;

ProfilerContext *freelistProfilerContext;

int flags;

PyObject *externalTimer;

double externalTimerUnit;

} ProfilerObject;

#define POF_ENABLED 0x001

#define POF_SUBCALLS 0x002

#define POF_BUILTINS 0x004

#define POF_NOMEMORY 0x100

static PyTypeObject PyProfiler_Type;

#define PyProfiler_Check(op) PyObject_TypeCheck(op, &PyProfiler_Type)

#define PyProfiler_CheckExact(op) Py_IS_TYPE(op, &PyProfiler_Type)

/*** External Timers ***/

static _PyTime_t CallExternalTimer(ProfilerObject *pObj)

{

PyObject *o = _PyObject_CallNoArg(pObj->externalTimer);

if (o == NULL) {

PyErr_WriteUnraisable(pObj->externalTimer);

return 0;

}

_PyTime_t result;

int err;

if (pObj->externalTimerUnit > 0.0) {

/* interpret the result as an integer that will be scaled

in profiler_getstats() */

err = _PyTime_FromNanosecondsObject(&result, o);

}

else {

/* interpret the result as a double measured in seconds.

As the profiler works with _PyTime_t internally

we convert it to a large integer */

err = _PyTime_FromSecondsObject(&result, o, _PyTime_ROUND_FLOOR);

}

Py_DECREF(o);

if (err < 0) {

PyErr_WriteUnraisable(pObj->externalTimer);

return 0;

}

return result;

}

static inline _PyTime_t

call_timer(ProfilerObject *pObj)

{

if (pObj->externalTimer != NULL) {

return CallExternalTimer(pObj);

}

else {

return _PyTime_GetPerfCounter();

}

/*** ProfilerObject ***/

static PyObject *

normalizeUserObj(PyObject *obj)

{

PyCFunctionObject *fn;

if (!PyCFunction_Check(obj)) {

Py_INCREF(obj);

return obj;

}

/* Replace built-in function objects with a descriptive string

because of built-in methods -- keeping a reference to

__self__ is probably not a good idea. */

fn = (PyCFunctionObject *)obj;

if (fn->m_self == NULL) {

/* built-in function: look up the module name */

PyObject *mod = fn->m_module;

PyObject *modname = NULL;

if (mod != NULL) {

if (PyUnicode_Check(mod)) {

modname = mod;

Py_INCREF(modname);

}

else if (PyModule_Check(mod)) {

modname = PyModule_GetNameObject(mod);

if (modname == NULL)

PyErr_Clear();

}

if (modname != NULL) {

if (!_PyUnicode_EqualToASCIIString(modname, "builtins")) {

PyObject *result;

result = PyUnicode_FromFormat("<%U.%s>", modname,

fn->m_ml->ml_name);

Py_DECREF(modname);

return result;

}

Py_DECREF(modname);

}

return PyUnicode_FromFormat("<%s>", fn->m_ml->ml_name);

}

else {

/* built-in method: try to return

repr(getattr(type(__self__), __name__))

PyObject *self = fn->m_self;

PyObject *name = PyUnicode_FromString(fn->m_ml->ml_name);

PyObject *modname = fn->m_module;

if (name != NULL) {

PyObject *mo = _PyType_Lookup(Py_TYPE(self), name);

Py_XINCREF(mo);

Py_DECREF(name);

if (mo != NULL) {

PyObject *res = PyObject_Repr(mo);

Py_DECREF(mo);

if (res != NULL)

return res;

}

/* Otherwise, use __module__ */

PyErr_Clear();

if (modname != NULL && PyUnicode_Check(modname))

return PyUnicode_FromFormat("<built-in method %S.%s>",

modname, fn->m_ml->ml_name);

else

return PyUnicode_FromFormat("<built-in method %s>",

fn->m_ml->ml_name);

}

static ProfilerEntry*

newProfilerEntry(ProfilerObject *pObj, void *key, PyObject *userObj)

{

ProfilerEntry *self;

self = (ProfilerEntry*) PyMem_Malloc(sizeof(ProfilerEntry));

if (self == NULL) {

pObj->flags |= POF_NOMEMORY;

return NULL;

}

userObj = normalizeUserObj(userObj);

if (userObj == NULL) {

PyErr_Clear();

PyMem_Free(self);

pObj->flags |= POF_NOMEMORY;

return NULL;

}

self->header.key = key;

self->userObj = userObj;

self->tt = 0;

self->it = 0;

self->callcount = 0;

self->recursivecallcount = 0;

self->recursionLevel = 0;

self->calls = EMPTY_ROTATING_TREE;

RotatingTree_Add(&pObj->profilerEntries, &self->header);

return self;

}

static ProfilerEntry*

getEntry(ProfilerObject *pObj, void *key)

{

return (ProfilerEntry*) RotatingTree_Get(&pObj->profilerEntries, key);

}

static ProfilerSubEntry *

getSubEntry(ProfilerObject *pObj, ProfilerEntry *caller, ProfilerEntry* entry)

{

return (ProfilerSubEntry*) RotatingTree_Get(&caller->calls,

(void *)entry);

}

static ProfilerSubEntry *

newSubEntry(ProfilerObject *pObj, ProfilerEntry *caller, ProfilerEntry* entry)

{

ProfilerSubEntry *self;

self = (ProfilerSubEntry*) PyMem_Malloc(sizeof(ProfilerSubEntry));

if (self == NULL) {

pObj->flags |= POF_NOMEMORY;

return NULL;

}

self->header.key = (void *)entry;

self->tt = 0;

self->it = 0;

self->callcount = 0;

self->recursivecallcount = 0;

self->recursionLevel = 0;

RotatingTree_Add(&caller->calls, &self->header);

return self;

}

static int freeSubEntry(rotating_node_t *header, void *arg)

{

ProfilerSubEntry *subentry = (ProfilerSubEntry*) header;

PyMem_Free(subentry);

return 0;

}

static int freeEntry(rotating_node_t *header, void *arg)

{

ProfilerEntry *entry = (ProfilerEntry*) header;

RotatingTree_Enum(entry->calls, freeSubEntry, NULL);

Py_DECREF(entry->userObj);

PyMem_Free(entry);

return 0;

}

static void clearEntries(ProfilerObject *pObj)

{

RotatingTree_Enum(pObj->profilerEntries, freeEntry, NULL);

pObj->profilerEntries = EMPTY_ROTATING_TREE;

/* release the memory hold by the ProfilerContexts */

if (pObj->currentProfilerContext) {

PyMem_Free(pObj->currentProfilerContext);

pObj->currentProfilerContext = NULL;

}

while (pObj->freelistProfilerContext) {

ProfilerContext *c = pObj->freelistProfilerContext;

pObj->freelistProfilerContext = c->previous;

PyMem_Free(c);

}

pObj->freelistProfilerContext = NULL;

}

static void

initContext(ProfilerObject *pObj, ProfilerContext *self, ProfilerEntry *entry)

{

self->ctxEntry = entry;

self->subt = 0;

self->previous = pObj->currentProfilerContext;

pObj->currentProfilerContext = self;

++entry->recursionLevel;

if ((pObj->flags & POF_SUBCALLS) && self->previous) {

/* find or create an entry for me in my caller's entry */

ProfilerEntry *caller = self->previous->ctxEntry;

ProfilerSubEntry *subentry = getSubEntry(pObj, caller, entry);

if (subentry == NULL)

subentry = newSubEntry(pObj, caller, entry);

if (subentry)

++subentry->recursionLevel;

}

self->t0 = call_timer(pObj);

}

static void

Stop(ProfilerObject *pObj, ProfilerContext *self, ProfilerEntry *entry)

{

_PyTime_t tt = call_timer(pObj) - self->t0;

_PyTime_t it = tt - self->subt;

if (self->previous)

self->previous->subt += tt;

pObj->currentProfilerContext = self->previous;

if (--entry->recursionLevel == 0)

entry->tt += tt;

else

++entry->recursivecallcount;

entry->it += it;

entry->callcount++;

if ((pObj->flags & POF_SUBCALLS) && self->previous) {

/* find or create an entry for me in my caller's entry */

ProfilerEntry *caller = self->previous->ctxEntry;

ProfilerSubEntry *subentry = getSubEntry(pObj, caller, entry);

if (subentry) {

if (--subentry->recursionLevel == 0)

subentry->tt += tt;

else

++subentry->recursivecallcount;

subentry->it += it;

++subentry->callcount;

}

static void

ptrace_enter_call(PyObject *self, void *key, PyObject *userObj)

{

/* entering a call to the function identified by 'key'

(which can be a PyCodeObject or a PyMethodDef pointer) */

ProfilerObject *pObj = (ProfilerObject*)self;

ProfilerEntry *profEntry;

ProfilerContext *pContext;

/* In the case of entering a generator expression frame via a

* throw (gen_send_ex(.., 1)), we may already have an

* Exception set here. We must not mess around with this

* exception, and some of the code under here assumes that

* PyErr_* is its own to mess around with, so we have to

* save and restore any current exception. */

PyObject *last_type, *last_value, *last_tb;

PyErr_Fetch(&last_type, &last_value, &last_tb);

profEntry = getEntry(pObj, key);

if (profEntry == NULL) {

profEntry = newProfilerEntry(pObj, key, userObj);

if (profEntry == NULL)

goto restorePyerr;

}

/* grab a ProfilerContext out of the free list */

pContext = pObj->freelistProfilerContext;

if (pContext) {

pObj->freelistProfilerContext = pContext->previous;

}

else {

/* free list exhausted, allocate a new one */

pContext = (ProfilerContext*)

PyMem_Malloc(sizeof(ProfilerContext));

if (pContext == NULL) {

pObj->flags |= POF_NOMEMORY;

goto restorePyerr;

}

initContext(pObj, pContext, profEntry);

restorePyerr:

PyErr_Restore(last_type, last_value, last_tb);

}

static void

ptrace_leave_call(PyObject *self, void *key)

{

/* leaving a call to the function identified by 'key' */

ProfilerObject *pObj = (ProfilerObject*)self;

ProfilerEntry *profEntry;

ProfilerContext *pContext;

pContext = pObj->currentProfilerContext;

if (pContext == NULL)

return;

profEntry = getEntry(pObj, key);

if (profEntry) {

Stop(pObj, pContext, profEntry);

}

else {

pObj->currentProfilerContext = pContext->previous;

}

/* put pContext into the free list */

pContext->previous = pObj->freelistProfilerContext;

pObj->freelistProfilerContext = pContext;

}

static int

profiler_callback(PyObject *self, PyFrameObject *frame, int what,

PyObject *arg)

{

switch (what) {

/* the 'frame' of a called function is about to start its execution */

case PyTrace_CALL:

{

PyCodeObject *code = PyFrame_GetCode(frame);

ptrace_enter_call(self, (void *)code, (PyObject *)code);

Py_DECREF(code);

break;

}

/* the 'frame' of a called function is about to finish

(either normally or with an exception) */

case PyTrace_RETURN:

{

PyCodeObject *code = PyFrame_GetCode(frame);

ptrace_leave_call(self, (void *)code);

Py_DECREF(code);

break;

}

/* case PyTrace_EXCEPTION:

If the exception results in the function exiting, a

PyTrace_RETURN event will be generated, so we don't need to

handle it. */

/* the Python function 'frame' is issuing a call to the built-in

function 'arg' */

case PyTrace_C_CALL:

if ((((ProfilerObject *)self)->flags & POF_BUILTINS)

&& PyCFunction_Check(arg)) {

ptrace_enter_call(self,

((PyCFunctionObject *)arg)->m_ml,

arg);

}

break;

/* the call to the built-in function 'arg' is returning into its

caller 'frame' */

case PyTrace_C_RETURN: /* ...normally */

case PyTrace_C_EXCEPTION: /* ...with an exception set */

if ((((ProfilerObject *)self)->flags & POF_BUILTINS)

&& PyCFunction_Check(arg)) {

ptrace_leave_call(self,

((PyCFunctionObject *)arg)->m_ml);

}

break;

default:

break;

}

return 0;

}

static int

pending_exception(ProfilerObject *pObj)

{

if (pObj->flags & POF_NOMEMORY) {

pObj->flags -= POF_NOMEMORY;

PyErr_SetString(PyExc_MemoryError,

"memory was exhausted while profiling");

return -1;

}

return 0;

}

/************************************************************/

static PyStructSequence_Field profiler_entry_fields[] = {

{"code", "code object or built-in function name"},

{"callcount", "how many times this was called"},

{"reccallcount", "how many times called recursively"},

{"totaltime", "total time in this entry"},

{"inlinetime", "inline time in this entry (not in subcalls)"},

{"calls", "details of the calls"},

{0}

};

static PyStructSequence_Field profiler_subentry_fields[] = {

{"code", "called code object or built-in function name"},

{"callcount", "how many times this is called"},

{"reccallcount", "how many times this is called recursively"},

{"totaltime", "total time spent in this call"},

{"inlinetime", "inline time (not in further subcalls)"},

{0}

};

static PyStructSequence_Desc profiler_entry_desc = {

"_lsprof.profiler_entry", /* name */

NULL, /* doc */

profiler_entry_fields,

};

static PyStructSequence_Desc profiler_subentry_desc = {

"_lsprof.profiler_subentry", /* name */

NULL, /* doc */

profiler_subentry_fields,

};

static int initialized;

static PyTypeObject StatsEntryType;

static PyTypeObject StatsSubEntryType;

typedef struct {

PyObject *list;

PyObject *sublist;

double factor;

} statscollector_t;

static int statsForSubEntry(rotating_node_t *node, void *arg)

{

ProfilerSubEntry *sentry = (ProfilerSubEntry*) node;

statscollector_t *collect = (statscollector_t*) arg;

ProfilerEntry *entry = (ProfilerEntry*) sentry->header.key;

int err;

PyObject *sinfo;

sinfo = PyObject_CallFunction((PyObject*) &StatsSubEntryType,

"((Olldd))",

entry->userObj,

sentry->callcount,

sentry->recursivecallcount,

collect->factor * sentry->tt,

collect->factor * sentry->it);

if (sinfo == NULL)

return -1;

err = PyList_Append(collect->sublist, sinfo);

Py_DECREF(sinfo);

return err;

}

static int statsForEntry(rotating_node_t *node, void *arg)

{

ProfilerEntry *entry = (ProfilerEntry*) node;

statscollector_t *collect = (statscollector_t*) arg;

PyObject *info;

int err;

if (entry->callcount == 0)

return 0; /* skip */

if (entry->calls != EMPTY_ROTATING_TREE) {

collect->sublist = PyList_New(0);

if (collect->sublist == NULL)

return -1;

if (RotatingTree_Enum(entry->calls,

statsForSubEntry, collect) != 0) {

Py_DECREF(collect->sublist);

return -1;

}

else {

Py_INCREF(Py_None);

collect->sublist = Py_None;

}

info = PyObject_CallFunction((PyObject*) &StatsEntryType,

"((OllddO))",

entry->userObj,

entry->callcount,

entry->recursivecallcount,

collect->factor * entry->tt,

collect->factor * entry->it,

collect->sublist);

Py_DECREF(collect->sublist);

if (info == NULL)

return -1;

err = PyList_Append(collect->list, info);

Py_DECREF(info);

return err;

}

PyDoc_STRVAR(getstats_doc, "\

getstats() -> list of profiler_entry objects\n\

\n\

Return all information collected by the profiler.\n\

Each profiler_entry is a tuple-like object with the\n\

following attributes:\n\

\n\

code code object\n\

callcount how many times this was called\n\

reccallcount how many times called recursively\n\

totaltime total time in this entry\n\

inlinetime inline time in this entry (not in subcalls)\n\

calls details of the calls\n\

\n\

The calls attribute is either None or a list of\n\

profiler_subentry objects:\n\

\n\

code called code object\n\

callcount how many times this is called\n\

reccallcount how many times this is called recursively\n\

totaltime total time spent in this call\n\

inlinetime inline time (not in further subcalls)\n\

");

static PyObject*

profiler_getstats(ProfilerObject *pObj, PyObject* noarg)

{

statscollector_t collect;

if (pending_exception(pObj)) {

return NULL;

}

if (!pObj->externalTimer || pObj->externalTimerUnit == 0.0) {

_PyTime_t onesec = _PyTime_FromSeconds(1);

collect.factor = (double)1 / onesec;

}

else {

collect.factor = pObj->externalTimerUnit;

}

collect.list = PyList_New(0);

if (collect.list == NULL)

return NULL;

if (RotatingTree_Enum(pObj->profilerEntries, statsForEntry, &collect)

!= 0) {

Py_DECREF(collect.list);

return NULL;

}

return collect.list;

}

static int

setSubcalls(ProfilerObject *pObj, int nvalue)

{

if (nvalue == 0)

pObj->flags &= ~POF_SUBCALLS;

else if (nvalue > 0)

pObj->flags |= POF_SUBCALLS;

return 0;

}

static int

setBuiltins(ProfilerObject *pObj, int nvalue)

{

if (nvalue == 0)

pObj->flags &= ~POF_BUILTINS;

else if (nvalue > 0) {

pObj->flags |= POF_BUILTINS;

}

return 0;

}

PyDoc_STRVAR(enable_doc, "\

enable(subcalls=True, builtins=True)\n\

\n\

Start collecting profiling information.\n\

If 'subcalls' is True, also records for each function\n\

statistics separated according to its current caller.\n\

If 'builtins' is True, records the time spent in\n\

built-in functions separately from their caller.\n\

");

static PyObject*

profiler_enable(ProfilerObject *self, PyObject *args, PyObject *kwds)

{

int subcalls = -1;

int builtins = -1;

static char *kwlist[] = {"subcalls", "builtins", 0};

if (!PyArg_ParseTupleAndKeywords(args, kwds, "|ii:enable",

kwlist, &subcalls, &builtins))

return NULL;

if (setSubcalls(self, subcalls) < 0 || setBuiltins(self, builtins) < 0) {

return NULL;

}

PyThreadState *tstate = PyThreadState_GET();

if (_PyEval_SetProfile(tstate, profiler_callback, (PyObject*)self) < 0) {

return NULL;

}

self->flags |= POF_ENABLED;

Py_RETURN_NONE;

}

static void

flush_unmatched(ProfilerObject *pObj)

{

while (pObj->currentProfilerContext) {

ProfilerContext *pContext = pObj->currentProfilerContext;

ProfilerEntry *profEntry= pContext->ctxEntry;

if (profEntry)

Stop(pObj, pContext, profEntry);

else

pObj->currentProfilerContext = pContext->previous;

if (pContext)

PyMem_Free(pContext);

}

PyDoc_STRVAR(disable_doc, "\

disable()\n\

\n\

Stop collecting profiling information.\n\

");

static PyObject*

profiler_disable(ProfilerObject *self, PyObject* noarg)

{

PyThreadState *tstate = PyThreadState_GET();

if (_PyEval_SetProfile(tstate, NULL, NULL) < 0) {

return NULL;

}

self->flags &= ~POF_ENABLED;

flush_unmatched(self);

if (pending_exception(self)) {

return NULL;

}

Py_RETURN_NONE;

}

PyDoc_STRVAR(clear_doc, "\

clear()\n\

\n\

Clear all profiling information collected so far.\n\

");

static PyObject*

profiler_clear(ProfilerObject *pObj, PyObject* noarg)

{

clearEntries(pObj);

Py_RETURN_NONE;

}

static void

profiler_dealloc(ProfilerObject *op)

{

if (op->flags & POF_ENABLED) {

PyThreadState *tstate = PyThreadState_GET();

if (_PyEval_SetProfile(tstate, NULL, NULL) < 0) {

PyErr_WriteUnraisable((PyObject *)op);

}

flush_unmatched(op);

clearEntries(op);

Py_XDECREF(op->externalTimer);

Py_TYPE(op)->tp_free(op);

}

static int

profiler_init(ProfilerObject *pObj, PyObject *args, PyObject *kw)

{

PyObject *timer = NULL;

double timeunit = 0.0;

int subcalls = 1;

int builtins = 1;

static char *kwlist[] = {"timer", "timeunit",

"subcalls", "builtins", 0};

if (!PyArg_ParseTupleAndKeywords(args, kw, "|Odii:Profiler", kwlist,

&timer, &timeunit,

&subcalls, &builtins))

return -1;

if (setSubcalls(pObj, subcalls) < 0 || setBuiltins(pObj, builtins) < 0)

return -1;

pObj->externalTimerUnit = timeunit;

Py_XINCREF(timer);

Py_XSETREF(pObj->externalTimer, timer);

return 0;

}

static PyMethodDef profiler_methods[] = {

{"getstats", (PyCFunction)profiler_getstats,

METH_NOARGS, getstats_doc},

{"enable", (PyCFunction)(void(*)(void))profiler_enable,

METH_VARARGS | METH_KEYWORDS, enable_doc},

{"disable", (PyCFunction)profiler_disable,

METH_NOARGS, disable_doc},

{"clear", (PyCFunction)profiler_clear,

METH_NOARGS, clear_doc},

{NULL, NULL}

};

PyDoc_STRVAR(profiler_doc, "\

Profiler(timer=None, timeunit=None, subcalls=True, builtins=True)\n\

\n\

Builds a profiler object using the specified timer function.\n\

The default timer is a fast built-in one based on real time.\n\

For custom timer functions returning integers, timeunit can\n\

be a float specifying a scale (i.e. how long each integer unit\n\

is, in seconds).\n\

");

static PyTypeObject PyProfiler_Type = {

PyVarObject_HEAD_INIT(NULL, 0)

"_lsprof.Profiler", /* tp_name */

sizeof(ProfilerObject), /* tp_basicsize */

0, /* tp_itemsize */

(destructor)profiler_dealloc, /* tp_dealloc */

0, /* tp_vectorcall_offset */

0, /* tp_getattr */

0, /* tp_setattr */

0, /* tp_as_async */

0, /* tp_repr */

0, /* tp_as_number */

0, /* tp_as_sequence */

0, /* tp_as_mapping */

0, /* tp_hash */

0, /* tp_call */

0, /* tp_str */

0, /* tp_getattro */

0, /* tp_setattro */

0, /* tp_as_buffer */

Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE, /* tp_flags */

profiler_doc, /* tp_doc */

0, /* tp_traverse */

0, /* tp_clear */

0, /* tp_richcompare */

0, /* tp_weaklistoffset */

0, /* tp_iter */

0, /* tp_iternext */

profiler_methods, /* tp_methods */

0, /* tp_members */

0, /* tp_getset */

0, /* tp_base */

0, /* tp_dict */

0, /* tp_descr_get */

0, /* tp_descr_set */

0, /* tp_dictoffset */

(initproc)profiler_init, /* tp_init */

PyType_GenericAlloc, /* tp_alloc */

PyType_GenericNew, /* tp_new */

PyObject_Del, /* tp_free */

};

static PyMethodDef moduleMethods[] = {

{NULL, NULL}

};

static struct PyModuleDef _lsprofmodule = {

PyModuleDef_HEAD_INIT,

"_lsprof",

"Fast profiler",

-1,

moduleMethods,

NULL,

NULL

};

PyMODINIT_FUNC

PyInit__lsprof(void)

{

PyObject *module, *d;

module = PyModule_Create(&_lsprofmodule);

if (module == NULL)

return NULL;

d = PyModule_GetDict(module);

if (PyType_Ready(&PyProfiler_Type) < 0)

return NULL;

PyDict_SetItemString(d, "Profiler", (PyObject *)&PyProfiler_Type);

if (!initialized) {

if (PyStructSequence_InitType2(&StatsEntryType,

&profiler_entry_desc) < 0)

return NULL;

if (PyStructSequence_InitType2(&StatsSubEntryType,

&profiler_subentry_desc) < 0)

return NULL;

}

Py_INCREF((PyObject*) &StatsEntryType);

Py_INCREF((PyObject*) &StatsSubEntryType);

PyModule_AddObject(module, "profiler_entry",

(PyObject*) &StatsEntryType);

PyModule_AddObject(module, "profiler_subentry",

(PyObject*) &StatsSubEntryType);

initialized = 1;

return module;

}

cpython/Modules/_lsprof.c at master · python-emscripten/cpython · GitHub

Repository navigation

Expand file tree

Breadcrumbs

_lsprof.c

Latest commit

History

Breadcrumbs

_lsprof.c

File metadata and controls