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bpo-46409: Make generators in bytecode (GH-30633)

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* Add RETURN_GENERATOR and JUMP_NO_INTERRUPT opcodes.

* Trim frame and generator by word each.

* Minor refactor of frame.c

* Update test.test_sys to account for smaller frames.

* Treat generator functions as normal functions when evaluating and specializing.
This commit is contained in:
Mark Shannon 2022-01-20 11:46:39 +00:00 • committed by GitHub
parent d05a66339b
commit b04dfbbe4b
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18 changed files with 236 additions and 205 deletions
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19
Python/frame.c
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@ -3,6 +3,7 @@
#include "frameobject.h"
#include "pycore_frame.h"
#include "pycore_object.h" // _PyObject_GC_UNTRACK()
#include "opcode.h"
int
_PyFrame_Traverse(InterpreterFrame *frame, visitproc visit, void *arg)
@ -51,15 +52,6 @@ _PyFrame_Copy(InterpreterFrame *src, InterpreterFrame *dest)
memcpy(dest, src, size);
}
static inline void
clear_specials(InterpreterFrame *frame)
{
frame->generator = NULL;
Py_XDECREF(frame->frame_obj);
Py_XDECREF(frame->f_locals);
Py_DECREF(frame->f_func);
Py_DECREF(frame->f_code);
}
static void
take_ownership(PyFrameObject *f, InterpreterFrame *frame)
@ -94,8 +86,8 @@ void
_PyFrame_Clear(InterpreterFrame * frame)
{
/* It is the responsibility of the owning generator/coroutine
* to have cleared the generator pointer */
assert(frame->generator == NULL);
* to have cleared the enclosing generator, if any. */
assert(!frame->is_generator);
if (frame->frame_obj) {
PyFrameObject *f = frame->frame_obj;
frame->frame_obj = NULL;
@ -110,5 +102,8 @@ _PyFrame_Clear(InterpreterFrame * frame)
for (int i = 0; i < frame->stacktop; i++) {
Py_XDECREF(frame->localsplus[i]);
}
clear_specials(frame);
Py_XDECREF(frame->frame_obj);
Py_XDECREF(frame->f_locals);
Py_DECREF(frame->f_func);
Py_DECREF(frame->f_code);
}