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#ifndef _PY_SETTRACE_HPP_
#define _PY_SETTRACE_HPP_
#include "ref_utils.hpp"
#include "py_utils.hpp"
#include "python.h"
#include "py_custom_pyeval_settrace.hpp"
#include <unordered_set>
#ifdef _WIN32
typedef HMODULE MODULE_TYPE;
#else // LINUX -----------------------------------------------------------------
typedef void* MODULE_TYPE;
typedef ssize_t SSIZE_T;
typedef unsigned int DWORD;
#endif
DWORD GetPythonThreadId(PythonVersion version, PyThreadState* curThread) {
DWORD threadId = 0;
if (PyThreadState_25_27::IsFor(version)) {
threadId = (DWORD)((PyThreadState_25_27*)curThread)->thread_id;
} else if (PyThreadState_30_33::IsFor(version)) {
threadId = (DWORD)((PyThreadState_30_33*)curThread)->thread_id;
} else if (PyThreadState_34_36::IsFor(version)) {
threadId = (DWORD)((PyThreadState_34_36*)curThread)->thread_id;
} else if (PyThreadState_37_38::IsFor(version)) {
threadId = (DWORD)((PyThreadState_37_38*)curThread)->thread_id;
} else if (PyThreadState_39::IsFor(version)) {
threadId = (DWORD)((PyThreadState_39*)curThread)->thread_id;
} else if (PyThreadState_310::IsFor(version)) {
threadId = (DWORD)((PyThreadState_310*)curThread)->thread_id;
} else if (PyThreadState_311::IsFor(version)) {
threadId = (DWORD)((PyThreadState_311*)curThread)->thread_id;
}
return threadId;
}
/**
* This function may be called to set a tracing function to existing python threads.
*/
int InternalSetSysTraceFunc(
MODULE_TYPE module,
bool isDebug,
bool showDebugInfo,
PyObjectHolder* traceFunc,
PyObjectHolder* setTraceFunc,
unsigned int threadId,
PyObjectHolder* pyNone)
{
if(showDebugInfo){
PRINT("InternalSetSysTraceFunc started.");
}
DEFINE_PROC(isInit, Py_IsInitialized*, "Py_IsInitialized", 100);
if (!isInit()) {
PRINT("Py_IsInitialized returned false.");
return 110;
}
auto version = GetPythonVersion(module);
// found initialized Python runtime, gather and check the APIs we need.
DEFINE_PROC(interpHead, PyInterpreterState_Head*, "PyInterpreterState_Head", 120);
DEFINE_PROC(gilEnsure, PyGILState_Ensure*, "PyGILState_Ensure", 130);
DEFINE_PROC(gilRelease, PyGILState_Release*, "PyGILState_Release", 140);
DEFINE_PROC(threadHead, PyInterpreterState_ThreadHead*, "PyInterpreterState_ThreadHead", 150);
DEFINE_PROC(threadNext, PyThreadState_Next*, "PyThreadState_Next", 160);
DEFINE_PROC(threadSwap, PyThreadState_Swap*, "PyThreadState_Swap", 170);
DEFINE_PROC(call, PyObject_CallFunctionObjArgs*, "PyObject_CallFunctionObjArgs", 180);
PyInt_FromLong* intFromLong;
if (version >= PythonVersion_30) {
DEFINE_PROC(intFromLongPy3, PyInt_FromLong*, "PyLong_FromLong", 190);
intFromLong = intFromLongPy3;
} else {
DEFINE_PROC(intFromLongPy2, PyInt_FromLong*, "PyInt_FromLong", 200);
intFromLong = intFromLongPy2;
}
DEFINE_PROC(pyGetAttr, PyObject_GetAttrString*, "PyObject_GetAttrString", 250);
DEFINE_PROC(pyHasAttr, PyObject_HasAttrString*, "PyObject_HasAttrString", 260);
DEFINE_PROC_NO_CHECK(PyCFrame_Type, PyTypeObject*, "PyCFrame_Type", 300); // optional
DEFINE_PROC_NO_CHECK(curPythonThread, PyThreadState**, "_PyThreadState_Current", 310); // optional
DEFINE_PROC_NO_CHECK(getPythonThread, _PyThreadState_UncheckedGet*, "_PyThreadState_UncheckedGet", 320); // optional
if (curPythonThread == nullptr && getPythonThread == nullptr) {
// we're missing some APIs, we cannot attach.
PRINT("Error, missing Python threading API!!");
return 330;
}
auto head = interpHead();
if (head == nullptr) {
// this interpreter is loaded but not initialized.
PRINT("Interpreter not initialized!");
return 340;
}
GilHolder gilLock(gilEnsure, gilRelease); // acquire and hold the GIL until done...
int retVal = 0;
// find what index is holding onto the thread state...
auto curPyThread = getPythonThread ? getPythonThread() : *curPythonThread;
if(curPyThread == nullptr){
PRINT("Getting the current python thread returned nullptr.");
return 345;
}
// We do what PyEval_SetTrace does, but for any target thread.
PyUnicode_InternFromString* pyUnicode_InternFromString;
if (version >= PythonVersion_30) {
DEFINE_PROC(unicodeFromString, PyUnicode_InternFromString*, "PyUnicode_InternFromString", 520);
pyUnicode_InternFromString = unicodeFromString;
} else {
DEFINE_PROC(stringFromString, PyUnicode_InternFromString*, "PyString_InternFromString", 525);
pyUnicode_InternFromString = stringFromString;
}
DEFINE_PROC_NO_CHECK(pyObject_FastCallDict, _PyObject_FastCallDict*, "_PyObject_FastCallDict", 530);
DEFINE_PROC(pyTuple_New, PyTuple_New*, "PyTuple_New", 531);
DEFINE_PROC(pyEval_CallObjectWithKeywords, PyEval_CallObjectWithKeywords*, "PyEval_CallObjectWithKeywords", 532);
if(pyObject_FastCallDict == nullptr) {
DEFINE_PROC_NO_CHECK(pyObject_FastCallDict, _PyObject_FastCallDict*, "PyObject_VectorcallDict", 533);
}
if(pyObject_FastCallDict == nullptr) {
// we have to use PyObject_FastCallDictCustom for older versions of CPython (pre 3.7).
pyObject_FastCallDict = reinterpret_cast<_PyObject_FastCallDict*>(&PyObject_FastCallDictCustom);
}
DEFINE_PROC(pyTraceBack_Here, PyTraceBack_Here*, "PyTraceBack_Here", 540);
DEFINE_PROC(pyEval_SetTrace, PyEval_SetTrace*, "PyEval_SetTrace", 550);
// These are defined mostly for printing info while debugging, so, if they're not there, don't bother reporting.
DEFINE_PROC_NO_CHECK(pyObject_Repr, PyObject_Repr*, "PyObject_Repr", 551);
DEFINE_PROC_NO_CHECK(pyUnicode_AsUTF8, PyUnicode_AsUTF8*, "PyUnicode_AsUTF8", 552);
bool found = false;
for (PyThreadState* curThread = threadHead(head); curThread != nullptr; curThread = threadNext(curThread)) {
if (GetPythonThreadId(version, curThread) != threadId) {
continue;
}
found = true;
if(showDebugInfo){
printf("setting trace for thread: %d\n", threadId);
}
if(!InternalIsTraceInitialized())
{
InternalInitializeCustomPyEvalSetTrace *internalInitializeCustomPyEvalSetTrace = new InternalInitializeCustomPyEvalSetTrace();
IncRef(pyNone->ToPython());
internalInitializeCustomPyEvalSetTrace->pyNone = pyNone->ToPython();
internalInitializeCustomPyEvalSetTrace->pyUnicode_InternFromString = pyUnicode_InternFromString;
internalInitializeCustomPyEvalSetTrace->pyObject_FastCallDict = pyObject_FastCallDict;
internalInitializeCustomPyEvalSetTrace->isDebug = isDebug;
internalInitializeCustomPyEvalSetTrace->pyTraceBack_Here = pyTraceBack_Here;
internalInitializeCustomPyEvalSetTrace->pyEval_SetTrace = pyEval_SetTrace;
internalInitializeCustomPyEvalSetTrace->pyTuple_New = pyTuple_New;
internalInitializeCustomPyEvalSetTrace->pyEval_CallObjectWithKeywords = pyEval_CallObjectWithKeywords;
internalInitializeCustomPyEvalSetTrace->pyObject_Repr = pyObject_Repr;
internalInitializeCustomPyEvalSetTrace->pyUnicode_AsUTF8 = pyUnicode_AsUTF8;
InternalTraceInit(internalInitializeCustomPyEvalSetTrace);
}
InternalPySetTrace(curThread, traceFunc, isDebug, version);
break;
}
if(!found) {
retVal = 501;
}
return retVal;
}
#endif // _PY_SETTRACE_HPP_
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