bpo-44032: Move data stack to thread from FrameObject. (GH-26076)

* Remove 'zombie' frames. We won't need them once we are allocating fixed-size frames.

* Add co_nlocalplus field to code object to avoid recomputing size of locals + frees + cells.

* Move locals, cells and freevars out of frame object into separate memory buffer.

* Use per-threadstate allocated memory chunks for local variables.

* Move globals and builtins from frame object to per-thread stack.

* Move (slow) locals frame object to per-thread stack.

* Move internal frame functions to internal header.

1 files changed, 13 insertions, 1 deletions

diff --git a/Objects/obmalloc.c b/Objects/obmalloc.c
index c1c1279..903ca1c 100644
--- a/Objects/obmalloc.c
+++ b/Objects/obmalloc.c
@@ -552,6 +552,18 @@ PyObject_GetArenaAllocator(PyObjectArenaAllocator *allocator)
     *allocator = _PyObject_Arena;
 }
 
+void *
+_PyObject_VirtualAlloc(size_t size)
+{
+    return _PyObject_Arena.alloc(_PyObject_Arena.ctx, size);
+}
+
+void
+_PyObject_VirtualFree(void *obj, size_t size)
+{
+    _PyObject_Arena.free(_PyObject_Arena.ctx, obj, size);
+}
+
 void
 PyObject_SetArenaAllocator(PyObjectArenaAllocator *allocator)
 {
@@ -3035,7 +3047,7 @@ _PyObject_DebugMallocStats(FILE *out)
 
     fputc('\n', out);
 
-    /* Account for what all of those arena bytes are being used for. */ 
+    /* Account for what all of those arena bytes are being used for. */
     total = printone(out, "# bytes in allocated blocks", allocated_bytes);
     total += printone(out, "# bytes in available blocks", available_bytes);