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

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* 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.
This commit is contained in:
Mark Shannon 2021-05-21 10:57:35 +01:00 • committed by GitHub
parent be4dd7fcd9
commit b11a951f16
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20 changed files with 454 additions and 250 deletions
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14
Objects/obmalloc.c
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@ -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);