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| author | Mark Shannon <mark@hotpy.org> | 2021-05-21 09:57:35 (GMT) |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2021-05-21 09:57:35 (GMT) |
| commit | b11a951f16f0603d98de24fee5c023df83ea552c (patch) | |
| tree | 82e7807515db0e284d9ebc3b8c3ba6ff08699ea5 /Tools | |
| parent | be4dd7fcd93ed29d362c4bbcc48151bc619d6595 (diff) | |
| download | cpython-b11a951f16f0603d98de24fee5c023df83ea552c.zip cpython-b11a951f16f0603d98de24fee5c023df83ea552c.tar.gz cpython-b11a951f16f0603d98de24fee5c023df83ea552c.tar.bz2 | |
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.
Diffstat (limited to 'Tools')
| -rwxr-xr-x | Tools/gdb/libpython.py | 20 |
1 files changed, 17 insertions, 3 deletions
diff --git a/Tools/gdb/libpython.py b/Tools/gdb/libpython.py index 270aeb4..b726b35 100755 --- a/Tools/gdb/libpython.py +++ b/Tools/gdb/libpython.py @@ -854,6 +854,8 @@ class PyNoneStructPtr(PyObjectPtr): def proxyval(self, visited): return None +FRAME_SPECIALS_GLOBAL_OFFSET = 0 +FRAME_SPECIALS_BUILTINS_OFFSET = 1 class PyFrameObjectPtr(PyObjectPtr): _typename = 'PyFrameObject' @@ -879,13 +881,19 @@ class PyFrameObjectPtr(PyObjectPtr): if self.is_optimized_out(): return - f_localsplus = self.field('f_localsplus') + f_localsplus = self.field('f_localsptr') for i in safe_range(self.co_nlocals): pyop_value = PyObjectPtr.from_pyobject_ptr(f_localsplus[i]) if not pyop_value.is_null(): pyop_name = PyObjectPtr.from_pyobject_ptr(self.co_varnames[i]) yield (pyop_name, pyop_value) + def _f_globals(self): + f_localsplus = self.field('f_localsptr') + nlocalsplus = int_from_int(self.co.field('co_nlocalsplus')) + index = nlocalsplus + FRAME_SPECIALS_GLOBAL_OFFSET + return PyObjectPtr.from_pyobject_ptr(f_localsplus[index]) + def iter_globals(self): ''' Yield a sequence of (name,value) pairs of PyObjectPtr instances, for @@ -894,9 +902,15 @@ class PyFrameObjectPtr(PyObjectPtr): if self.is_optimized_out(): return () - pyop_globals = self.pyop_field('f_globals') + pyop_globals = self._f_globals() return pyop_globals.iteritems() + def _f_builtins(self): + f_localsplus = self.field('f_localsptr') + nlocalsplus = int_from_int(self.co.field('co_nlocalsplus')) + index = nlocalsplus + FRAME_SPECIALS_BUILTINS_OFFSET + return PyObjectPtr.from_pyobject_ptr(f_localsplus[index]) + def iter_builtins(self): ''' Yield a sequence of (name,value) pairs of PyObjectPtr instances, for @@ -905,7 +919,7 @@ class PyFrameObjectPtr(PyObjectPtr): if self.is_optimized_out(): return () - pyop_builtins = self.pyop_field('f_builtins') + pyop_builtins = self._f_builtins() return pyop_builtins.iteritems() def get_var_by_name(self, name): |