Mercurial > cpython-lru_cache-weakref

annotate Include/weakrefobject.h @ 66978:aed2bbafa550 3.1

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Blocked revisions 87324 via svnmerge ........ r87324 | r.david.murray | 2010-12-16 14:08:51 -0500 (Thu, 16 Dec 2010) | 9 lines #10719: restore messages generated on invalid compileall args Before the introduction of filename arguments to compileall it gave semi useful messages about not being able to 'list' names that weren't valid directories. This fix restores that behavior. In addition to the test for this case, the patch also adds a test for the default behavior of compileall when no arguments are provided, and fixes a bug in one of the previously added tests. ........
author R. David Murray <rdmurray@bitdance.com>
date Thu, 16 Dec 2010 19:10:16 +0000
parents 86a2679dca46
children e8969fb822fc 7e771f0363e2
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1 /* Weak references objects for Python. */
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2
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3 #ifndef Py_WEAKREFOBJECT_H
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4 #define Py_WEAKREFOBJECT_H
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5 #ifdef __cplusplus
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6 extern "C" {
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7 #endif
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10 typedef struct _PyWeakReference PyWeakReference;
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11
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12 /* PyWeakReference is the base struct for the Python ReferenceType, ProxyType,
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13 * and CallableProxyType.
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14 */
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15 struct _PyWeakReference {
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16 PyObject_HEAD
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17
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18 /* The object to which this is a weak reference, or Py_None if none.
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19 * Note that this is a stealth reference: wr_object's refcount is
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20 * not incremented to reflect this pointer.
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21 */
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22 PyObject *wr_object;
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23
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24 /* A callable to invoke when wr_object dies, or NULL if none. */
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25 PyObject *wr_callback;
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26
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27 /* A cache for wr_object's hash code. As usual for hashes, this is -1
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28 * if the hash code isn't known yet.
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29 */
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30 long hash;
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31
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32 /* If wr_object is weakly referenced, wr_object has a doubly-linked NULL-
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33 * terminated list of weak references to it. These are the list pointers.
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34 * If wr_object goes away, wr_object is set to Py_None, and these pointers
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35 * have no meaning then.
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36 */
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37 PyWeakReference *wr_prev;
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38 PyWeakReference *wr_next;
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39 };
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40
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41 PyAPI_DATA(PyTypeObject) _PyWeakref_RefType;
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42 PyAPI_DATA(PyTypeObject) _PyWeakref_ProxyType;
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43 PyAPI_DATA(PyTypeObject) _PyWeakref_CallableProxyType;
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45 #define PyWeakref_CheckRef(op) PyObject_TypeCheck(op, &_PyWeakref_RefType)
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46 #define PyWeakref_CheckRefExact(op) \
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47 (Py_TYPE(op) == &_PyWeakref_RefType)
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48 #define PyWeakref_CheckProxy(op) \
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49 ((Py_TYPE(op) == &_PyWeakref_ProxyType) || \
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50 (Py_TYPE(op) == &_PyWeakref_CallableProxyType))
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52 /* This macro calls PyWeakref_CheckRef() last since that can involve a
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53 function call; this makes it more likely that the function call
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54 will be avoided. */
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55 #define PyWeakref_Check(op) \
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56 (PyWeakref_CheckRef(op) || PyWeakref_CheckProxy(op))
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59 PyAPI_FUNC(PyObject *) PyWeakref_NewRef(PyObject *ob,
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60 PyObject *callback);
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61 PyAPI_FUNC(PyObject *) PyWeakref_NewProxy(PyObject *ob,
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62 PyObject *callback);
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63 PyAPI_FUNC(PyObject *) PyWeakref_GetObject(PyObject *ref);
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65 PyAPI_FUNC(Py_ssize_t) _PyWeakref_GetWeakrefCount(PyWeakReference *head);
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67 PyAPI_FUNC(void) _PyWeakref_ClearRef(PyWeakReference *self);
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69 #define PyWeakref_GET_OBJECT(ref) (((PyWeakReference *)(ref))->wr_object)
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72 #ifdef __cplusplus
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73 }
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74 #endif
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75 #endif /* !Py_WEAKREFOBJECT_H */