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gh-96143: Allow Linux perf profiler to see Python calls (GH-96123)

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⚠️  ⚠️ Note for reviewers, hackers and fellow systems/low-level/compiler engineers ⚠️ ⚠️ 

If you have a lot of experience with this kind of shenanigans and want to improve the **first** version, **please make a PR against my branch** or **reach out by email** or **suggest code changes directly on GitHub**. 

If you have any **refinements or optimizations** please, wait until the first version is merged before starting hacking or proposing those so we can keep this PR productive.
This commit is contained in:
Pablo Galindo Salgado 2022-08-30 18:11:18 +01:00 • committed by GitHub
parent 0f733fffe8
commit 6d791a9736
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GPG key ID: 4AEE18F83AFDEB23
24 changed files with 1412 additions and 2 deletions
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75
Python/clinic/sysmodule.c.h generated
View file

@ -1151,6 +1151,79 @@ sys_getandroidapilevel(PyObject *module, PyObject *Py_UNUSED(ignored))
#endif /* defined(ANDROID_API_LEVEL) */
PyDoc_STRVAR(sys_activate_stack_trampoline__doc__,
"activate_stack_trampoline($module, backend, /)\n"
"--\n"
"\n"
"Activate the perf profiler trampoline.");
#define SYS_ACTIVATE_STACK_TRAMPOLINE_METHODDEF \
{"activate_stack_trampoline", (PyCFunction)sys_activate_stack_trampoline, METH_O, sys_activate_stack_trampoline__doc__},
static PyObject *
sys_activate_stack_trampoline_impl(PyObject *module, const char *backend);
static PyObject *
sys_activate_stack_trampoline(PyObject *module, PyObject *arg)
{
PyObject *return_value = NULL;
const char *backend;
if (!PyUnicode_Check(arg)) {
_PyArg_BadArgument("activate_stack_trampoline", "argument", "str", arg);
goto exit;
}
Py_ssize_t backend_length;
backend = PyUnicode_AsUTF8AndSize(arg, &backend_length);
if (backend == NULL) {
goto exit;
}
if (strlen(backend) != (size_t)backend_length) {
PyErr_SetString(PyExc_ValueError, "embedded null character");
goto exit;
}
return_value = sys_activate_stack_trampoline_impl(module, backend);
exit:
return return_value;
}
PyDoc_STRVAR(sys_deactivate_stack_trampoline__doc__,
"deactivate_stack_trampoline($module, /)\n"
"--\n"
"\n"
"Dectivate the perf profiler trampoline.");
#define SYS_DEACTIVATE_STACK_TRAMPOLINE_METHODDEF \
{"deactivate_stack_trampoline", (PyCFunction)sys_deactivate_stack_trampoline, METH_NOARGS, sys_deactivate_stack_trampoline__doc__},
static PyObject *
sys_deactivate_stack_trampoline_impl(PyObject *module);
static PyObject *
sys_deactivate_stack_trampoline(PyObject *module, PyObject *Py_UNUSED(ignored))
{
return sys_deactivate_stack_trampoline_impl(module);
}
PyDoc_STRVAR(sys_is_stack_trampoline_active__doc__,
"is_stack_trampoline_active($module, /)\n"
"--\n"
"\n"
"Returns *True* if the perf profiler trampoline is active.");
#define SYS_IS_STACK_TRAMPOLINE_ACTIVE_METHODDEF \
{"is_stack_trampoline_active", (PyCFunction)sys_is_stack_trampoline_active, METH_NOARGS, sys_is_stack_trampoline_active__doc__},
static PyObject *
sys_is_stack_trampoline_active_impl(PyObject *module);
static PyObject *
sys_is_stack_trampoline_active(PyObject *module, PyObject *Py_UNUSED(ignored))
{
return sys_is_stack_trampoline_active_impl(module);
}
#ifndef SYS_GETWINDOWSVERSION_METHODDEF
#define SYS_GETWINDOWSVERSION_METHODDEF
#endif /* !defined(SYS_GETWINDOWSVERSION_METHODDEF) */
@ -1194,4 +1267,4 @@ sys_getandroidapilevel(PyObject *module, PyObject *Py_UNUSED(ignored))
#ifndef SYS_GETANDROIDAPILEVEL_METHODDEF
#define SYS_GETANDROIDAPILEVEL_METHODDEF
#endif /* !defined(SYS_GETANDROIDAPILEVEL_METHODDEF) */
/*[clinic end generated code: output=322fb0409e376ad4 input=a9049054013a1b77]*/
/*[clinic end generated code: output=43b44240211afe95 input=a9049054013a1b77]*/