#include "Python.h"

#include "frameobject.h"

#include "rotatingtree.h"

#if !defined(HAVE_LONG_LONG)

#error "This module requires long longs!"

#endif

/*** Selection of a high-precision timer ***/

#ifdef MS_WINDOWS

#include <windows.h>

static PY_LONG_LONG

hpTimer(void)

{

LARGE_INTEGER li;

QueryPerformanceCounter(&li);

return li.QuadPart;

}

static double

hpTimerUnit(void)

{

LARGE_INTEGER li;

if (QueryPerformanceFrequency(&li))

return 1.0 / li.QuadPart;

else

return 0.000001; /* unlikely */

}

#else /* !MS_WINDOWS */

#ifndef HAVE_GETTIMEOFDAY

#error "This module requires gettimeofday() on non-Windows platforms!"

#endif

#include <sys/resource.h>

#include <sys/times.h>

static PY_LONG_LONG

hpTimer(void)

{

struct timeval tv;

PY_LONG_LONG ret;

#ifdef GETTIMEOFDAY_NO_TZ

gettimeofday(&tv);

#else

gettimeofday(&tv, (struct timezone *)NULL);

#endif

ret = tv.tv_sec;

ret = ret * 1000000 + tv.tv_usec;

return ret;

}

static double

hpTimerUnit(void)

{

return 0.000001;

}

#endif /* MS_WINDOWS */

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

/* Written by Brett Rosen and Ted Czotter */

struct _ProfilerEntry;

/* represents a function called from another function */

typedef struct _ProfilerSubEntry {

rotating_node_t header;

PY_LONG_LONG tt;

PY_LONG_LONG 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 */

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

PY_LONG_LONG 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 {

PY_LONG_LONG t0;

PY_LONG_LONG 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_TYPE(op) == &PyProfiler_Type)

/*** External Timers ***/

#define DOUBLE_TIMER_PRECISION 4294967296.0

static PyObject *empty_tuple;

static PY_LONG_LONG CallExternalTimer(ProfilerObject *pObj)

{

PY_LONG_LONG result;

PyObject *o = PyObject_Call(pObj->externalTimer, empty_tuple, NULL);

if (o == NULL) {

PyErr_WriteUnraisable(pObj->externalTimer);

return 0;

}

if (pObj->externalTimerUnit > 0.0) {

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

in profiler_getstats() */

result = PyLong_AsLongLong(o);

}

else {

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

As the profiler works with PY_LONG_LONG internally

we convert it to a large integer */

double val = PyFloat_AsDouble(o);

/* error handling delayed to the code below */

result = (PY_LONG_LONG) (val * DOUBLE_TIMER_PRECISION);

}

Py_DECREF(o);

if (PyErr_Occurred()) {

PyErr_WriteUnraisable(pObj->externalTimer);

return 0;

}

return result;

}

#define CALL_TIMER(pObj) ((pObj)->externalTimer ? \

CallExternalTimer(pObj) : \

hpTimer())

/*** 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_CompareWithASCIIString(modname, "builtins") != 0) {

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)

{

PY_LONG_LONG tt = CALL_TIMER(pObj) - self->t0;

PY_LONG_LONG 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:

ptrace_enter_call(self, (void *)frame->f_code,

(PyObject *)frame->f_code);

break;

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

(either normally or with an exception) */

case PyTrace_RETURN:

ptrace_leave_call(self, (void *)frame->f_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,

6

};

static PyStructSequence_Desc profiler_subentry_desc = {

"_lsprof.profiler_subentry", /* name */

NULL, /* doc */

profiler_subentry_fields,

5

};

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)

collect.factor = hpTimerUnit();

else if (pObj->externalTimerUnit > 0.0)

collect.factor = pObj->externalTimerUnit;

else

collect.factor = 1.0 / DOUBLE_TIMER_PRECISION;

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;

PyEval_SetProfile(profiler_callback, (PyObject*)self);

self->flags |= POF_ENABLED;

Py_INCREF(Py_None);

return Py_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)

{

self->flags &= ~POF_ENABLED;

PyEval_SetProfile(NULL, NULL);

flush_unmatched(self);

if (pending_exception(self))

return NULL;

Py_INCREF(Py_None);

return Py_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_INCREF(Py_None);

return Py_None;

}

static void

profiler_dealloc(ProfilerObject *op)

{

if (op->flags & POF_ENABLED)

PyEval_SetProfile(NULL, NULL);

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 *o;

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;

o = pObj->externalTimer;

pObj->externalTimer = timer;

Py_XINCREF(timer);

Py_XDECREF(o);

pObj->externalTimerUnit = timeunit;

return 0;

}

static PyMethodDef profiler_methods[] = {

{"getstats", (PyCFunction)profiler_getstats,

METH_NOARGS, getstats_doc},

{"enable", (PyCFunction)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(custom_timer=None, time_unit=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, time_unit 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_print */

0, /* tp_getattr */

0, /* tp_setattr */

0, /* tp_reserved */

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,

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);

empty_tuple = PyTuple_New(0);

initialized = 1;

return module;

}