mirrors/cpython
1
0
Fork 0
mirror of https://github.com/python/cpython.git synced 2025-08-03 08:34:29 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions 6

bpo-43760: Add PyThreadState_EnterTracing() (GH-28542)

Browse source 
Add PyThreadState_EnterTracing() and PyThreadState_LeaveTracing()
functions to the limited C API to suspend and resume tracing and
profiling.

Add an unit test on the PyThreadState C API to _testcapi.

Add also internal _PyThreadState_DisableTracing() and
_PyThreadState_ResetTracing().
This commit is contained in:
Victor Stinner 2021-10-15 16:06:30 +02:00 • committed by GitHub
parent 354c35220d
commit 547d26aa08
No known key found for this signature in database
GPG key ID: 4AEE18F83AFDEB23
9 changed files with 146 additions and 25 deletions
Download patch file Download diff file Expand all files Collapse all files

7
Include/cpython/pystate.h
View file

@ -185,6 +185,13 @@ PyAPI_FUNC(PyThreadState *) _PyThreadState_UncheckedGet(void);
PyAPI_FUNC(PyObject *) _PyThreadState_GetDict(PyThreadState *tstate);
// Disable tracing and profiling.
PyAPI_FUNC(void) PyThreadState_EnterTracing(PyThreadState *tstate);
// Reset tracing and profiling: enable them if a trace function or a profile
// function is set, otherwise disable them.
PyAPI_FUNC(void) PyThreadState_LeaveTracing(PyThreadState *tstate);
/* PyGILState */
/* Helper/diagnostic function - return 1 if the current thread

19
Include/internal/pycore_pystate.h
View file

@ -125,7 +125,7 @@ static inline PyInterpreterState* _PyInterpreterState_GET(void) {
}
/* Other */
// PyThreadState functions
PyAPI_FUNC(void) _PyThreadState_Init(
PyThreadState *tstate);
@ -133,6 +133,23 @@ PyAPI_FUNC(void) _PyThreadState_DeleteExcept(
_PyRuntimeState *runtime,
PyThreadState *tstate);
static inline void
_PyThreadState_DisableTracing(PyThreadState *tstate)
{
tstate->cframe->use_tracing = 0;
}
static inline void
_PyThreadState_ResetTracing(PyThreadState *tstate)
{
int use_tracing = (tstate->c_tracefunc != NULL
|| tstate->c_profilefunc != NULL);
tstate->cframe->use_tracing = (use_tracing ? 255 : 0);
}
/* Other */
PyAPI_FUNC(PyThreadState *) _PyThreadState_Swap(
struct _gilstate_runtime_state *gilstate,
PyThreadState *newts);