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gh-109587: Allow "precompiled" perf-trampolines to largely mitigate the cost of enabling perf-trampolines (#109666)

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gsallam 2023-10-26 20:57:29 -07:00 • committed by GitHub
parent 3d2f1f0b83
commit 21f068d80c
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8 changed files with 199 additions and 10 deletions
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32
Modules/_testinternalcapi.c
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@ -1556,6 +1556,36 @@ _testinternalcapi_test_long_numbits_impl(PyObject *module)
Py_RETURN_NONE;
}
static PyObject *
compile_perf_trampoline_entry(PyObject *self, PyObject *args)
{
PyObject *co;
if (!PyArg_ParseTuple(args, "O!", &PyCode_Type, &co)) {
return NULL;
}
int ret = PyUnstable_PerfTrampoline_CompileCode((PyCodeObject *)co);
if (ret != 0) {
PyErr_SetString(PyExc_AssertionError, "Failed to compile trampoline");
return NULL;
}
return PyLong_FromLong(ret);
}
static PyObject *
perf_trampoline_set_persist_after_fork(PyObject *self, PyObject *args)
{
int enable;
if (!PyArg_ParseTuple(args, "i", &enable)) {
return NULL;
}
int ret = PyUnstable_PerfTrampoline_SetPersistAfterFork(enable);
if (ret == 0) {
PyErr_SetString(PyExc_AssertionError, "Failed to set persist_after_fork");
return NULL;
}
return PyLong_FromLong(ret);
}
static PyMethodDef module_functions[] = {
{"get_configs", get_configs, METH_NOARGS},
@ -1613,6 +1643,8 @@ static PyMethodDef module_functions[] = {
{"run_in_subinterp_with_config",
_PyCFunction_CAST(run_in_subinterp_with_config),
METH_VARARGS | METH_KEYWORDS},
{"compile_perf_trampoline_entry", compile_perf_trampoline_entry, METH_VARARGS},
{"perf_trampoline_set_persist_after_fork", perf_trampoline_set_persist_after_fork, METH_VARARGS},
_TESTINTERNALCAPI_WRITE_UNRAISABLE_EXC_METHODDEF
_TESTINTERNALCAPI_TEST_LONG_NUMBITS_METHODDEF
{NULL, NULL} /* sentinel */