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convert generator exc state functions into static functions

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This commit is contained in:
Benjamin Peterson 2011-07-03 16:48:31 -05:00
parent 536feac7f8
commit 878802435d
1 changed files with 62 additions and 54 deletions
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116
Python/ceval.c
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@ -749,6 +749,9 @@ enum why_code {
WHY_SILENCED = 0x0080 /* Exception silenced by 'with' */ WHY_SILENCED = 0x0080 /* Exception silenced by 'with' */
}; };
static void save_exc_state(PyThreadState *, PyFrameObject *);
static void swap_exc_state(PyThreadState *, PyFrameObject *);
static void restore_and_clear_exc_state(PyThreadState *, PyFrameObject *);
static enum why_code do_raise(PyObject *, PyObject *); static enum why_code do_raise(PyObject *, PyObject *);
static int unpack_iterable(PyObject *, int, int, PyObject **); static int unpack_iterable(PyObject *, int, int, PyObject **);
@ -1110,54 +1113,6 @@ PyEval_EvalFrameEx(PyFrameObject *f, int throwflag)
Py_XDECREF(traceback); \ Py_XDECREF(traceback); \
} }
#define SAVE_EXC_STATE() \
{ \
PyObject *type, *value, *traceback; \
Py_XINCREF(tstate->exc_type); \
Py_XINCREF(tstate->exc_value); \
Py_XINCREF(tstate->exc_traceback); \
type = f->f_exc_type; \
value = f->f_exc_value; \
traceback = f->f_exc_traceback; \
f->f_exc_type = tstate->exc_type; \
f->f_exc_value = tstate->exc_value; \
f->f_exc_traceback = tstate->exc_traceback; \
Py_XDECREF(type); \
Py_XDECREF(value); \
Py_XDECREF(traceback); \
}
#define SWAP_EXC_STATE() \
{ \
PyObject *tmp; \
tmp = tstate->exc_type; \
tstate->exc_type = f->f_exc_type; \
f->f_exc_type = tmp; \
tmp = tstate->exc_value; \
tstate->exc_value = f->f_exc_value; \
f->f_exc_value = tmp; \
tmp = tstate->exc_traceback; \
tstate->exc_traceback = f->f_exc_traceback; \
f->f_exc_traceback = tmp; \
}
#define RESTORE_AND_CLEAR_EXC_STATE() \
{ \
PyObject *type, *value, *tb; \
type = tstate->exc_type; \
value = tstate->exc_value; \
tb = tstate->exc_traceback; \
tstate->exc_type = f->f_exc_type; \
tstate->exc_value = f->f_exc_value; \
tstate->exc_traceback = f->f_exc_traceback; \
f->f_exc_type = NULL; \
f->f_exc_value = NULL; \
f->f_exc_traceback = NULL; \
Py_XDECREF(type); \
Py_XDECREF(value); \
Py_XDECREF(tb); \
}
/* Start of code */ /* Start of code */
if (f == NULL) if (f == NULL)
@ -1236,11 +1191,10 @@ PyEval_EvalFrameEx(PyFrameObject *f, int throwflag)
/* We were in an except handler when we left, /* We were in an except handler when we left,
restore the exception state which was put aside restore the exception state which was put aside
(see YIELD_VALUE). */ (see YIELD_VALUE). */
SWAP_EXC_STATE(); swap_exc_state(tstate, f);
}
else {
SAVE_EXC_STATE();
} }
else
save_exc_state(tstate, f);
} }
#ifdef LLTRACE #ifdef LLTRACE
@ -3033,9 +2987,9 @@ fast_yield:
break; break;
if (i == f->f_iblock) if (i == f->f_iblock)
/* We did not create this exception. */ /* We did not create this exception. */
RESTORE_AND_CLEAR_EXC_STATE() restore_and_clear_exc_state(tstate, f);
else else
SWAP_EXC_STATE() swap_exc_state(tstate, f);
} }
if (tstate->use_tracing) { if (tstate->use_tracing) {
@ -3453,6 +3407,60 @@ special_lookup(PyObject *o, char *meth, PyObject **cache)
} }
/* These 3 functions deal with the exception state of generators. */
static void
save_exc_state(PyThreadState *tstate, PyFrameObject *f)
{
PyObject *type, *value, *traceback;
Py_XINCREF(tstate->exc_type);
Py_XINCREF(tstate->exc_value);
Py_XINCREF(tstate->exc_traceback);
type = f->f_exc_type;
value = f->f_exc_value;
traceback = f->f_exc_traceback;
f->f_exc_type = tstate->exc_type;
f->f_exc_value = tstate->exc_value;
f->f_exc_traceback = tstate->exc_traceback;
Py_XDECREF(type);
Py_XDECREF(value);
Py_XDECREF(traceback);
}
static void
swap_exc_state(PyThreadState *tstate, PyFrameObject *f)
{
PyObject *tmp;
tmp = tstate->exc_type;
tstate->exc_type = f->f_exc_type;
f->f_exc_type = tmp;
tmp = tstate->exc_value;
tstate->exc_value = f->f_exc_value;
f->f_exc_value = tmp;
tmp = tstate->exc_traceback;
tstate->exc_traceback = f->f_exc_traceback;
f->f_exc_traceback = tmp;
}
static void
restore_and_clear_exc_state(PyThreadState *tstate, PyFrameObject *f)
{
PyObject *type, *value, *tb;
type = tstate->exc_type;
value = tstate->exc_value;
tb = tstate->exc_traceback;
tstate->exc_type = f->f_exc_type;
tstate->exc_value = f->f_exc_value;
tstate->exc_traceback = f->f_exc_traceback;
f->f_exc_type = NULL;
f->f_exc_value = NULL;
f->f_exc_traceback = NULL;
Py_XDECREF(type);
Py_XDECREF(value);
Py_XDECREF(tb);
}
/* Logic for the raise statement (too complicated for inlining). /* Logic for the raise statement (too complicated for inlining).
This *consumes* a reference count to each of its arguments. */ This *consumes* a reference count to each of its arguments. */
static enum why_code static enum why_code