mirror of
https://github.com/python/cpython.git
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7c88dcc5ab
Applied patch zombie-frames-2.diff from sf patch 876206 with updates for Python 2.5 and also modified to retain the free_list to avoid the 67% slow-down in pybench recursion test. 5% speed up in function call pybench.
94 lines
3.2 KiB
C
94 lines
3.2 KiB
C
/* Definitions for bytecode */
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#ifndef Py_CODE_H
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#define Py_CODE_H
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#ifdef __cplusplus
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extern "C" {
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#endif
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/* Bytecode object */
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typedef struct {
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PyObject_HEAD
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int co_argcount; /* #arguments, except *args */
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int co_nlocals; /* #local variables */
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int co_stacksize; /* #entries needed for evaluation stack */
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int co_flags; /* CO_..., see below */
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PyObject *co_code; /* instruction opcodes */
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PyObject *co_consts; /* list (constants used) */
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PyObject *co_names; /* list of strings (names used) */
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PyObject *co_varnames; /* tuple of strings (local variable names) */
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PyObject *co_freevars; /* tuple of strings (free variable names) */
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PyObject *co_cellvars; /* tuple of strings (cell variable names) */
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/* The rest doesn't count for hash/cmp */
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PyObject *co_filename; /* string (where it was loaded from) */
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PyObject *co_name; /* string (name, for reference) */
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int co_firstlineno; /* first source line number */
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PyObject *co_lnotab; /* string (encoding addr<->lineno mapping) */
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void *co_zombieframe; /* for optimization only (see frameobject.c) */
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} PyCodeObject;
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/* Masks for co_flags above */
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#define CO_OPTIMIZED 0x0001
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#define CO_NEWLOCALS 0x0002
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#define CO_VARARGS 0x0004
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#define CO_VARKEYWORDS 0x0008
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#define CO_NESTED 0x0010
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#define CO_GENERATOR 0x0020
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/* The CO_NOFREE flag is set if there are no free or cell variables.
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This information is redundant, but it allows a single flag test
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to determine whether there is any extra work to be done when the
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call frame it setup.
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*/
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#define CO_NOFREE 0x0040
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#if 0
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/* This is no longer used. Stopped defining in 2.5, do not re-use. */
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#define CO_GENERATOR_ALLOWED 0x1000
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#endif
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#define CO_FUTURE_DIVISION 0x2000
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#define CO_FUTURE_ABSOLUTE_IMPORT 0x4000 /* do absolute imports by default */
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#define CO_FUTURE_WITH_STATEMENT 0x8000
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/* This should be defined if a future statement modifies the syntax.
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For example, when a keyword is added.
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*/
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#define PY_PARSER_REQUIRES_FUTURE_KEYWORD
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#define CO_MAXBLOCKS 20 /* Max static block nesting within a function */
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PyAPI_DATA(PyTypeObject) PyCode_Type;
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#define PyCode_Check(op) ((op)->ob_type == &PyCode_Type)
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#define PyCode_GetNumFree(op) (PyTuple_GET_SIZE((op)->co_freevars))
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/* Public interface */
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PyAPI_FUNC(PyCodeObject *) PyCode_New(
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int, int, int, int, PyObject *, PyObject *, PyObject *, PyObject *,
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PyObject *, PyObject *, PyObject *, PyObject *, int, PyObject *);
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/* same as struct above */
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PyAPI_FUNC(int) PyCode_Addr2Line(PyCodeObject *, int);
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/* for internal use only */
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#define _PyCode_GETCODEPTR(co, pp) \
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((*(co)->co_code->ob_type->tp_as_buffer->bf_getreadbuffer) \
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((co)->co_code, 0, (void **)(pp)))
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typedef struct _addr_pair {
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int ap_lower;
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int ap_upper;
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} PyAddrPair;
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/* Check whether lasti (an instruction offset) falls outside bounds
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and whether it is a line number that should be traced. Returns
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a line number if it should be traced or -1 if the line should not.
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If lasti is not within bounds, updates bounds.
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*/
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PyAPI_FUNC(int) PyCode_CheckLineNumber(PyCodeObject* co,
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int lasti, PyAddrPair *bounds);
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#ifdef __cplusplus
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}
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#endif
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#endif /* !Py_CODE_H */
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