mirror of https://github.com/python/cpython
Issue #19437: Fix _threading.RLock constructor (rlock_new), call
Py_DECREF(self) if PyThread_allocate_lock() failed instead of calling directly type->tp_free(self), to keep the chained list of objects consistent when Python is compiled in debug mode fails, don't consume the row (restore it) and fail immediatly (don't call pysqlite_step())
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@ -68,7 +68,7 @@ acquire_timed(PyThread_type_lock lock, PY_TIMEOUT_T microseconds)
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Py_BEGIN_ALLOW_THREADS
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r = PyThread_acquire_lock_timed(lock, microseconds, 1);
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Py_END_ALLOW_THREADS
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}
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}
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if (r == PY_LOCK_INTR) {
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/* Run signal handlers if we were interrupted. Propagate
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@ -255,14 +255,17 @@ typedef struct {
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static void
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rlock_dealloc(rlockobject *self)
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{
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assert(self->rlock_lock);
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if (self->in_weakreflist != NULL)
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PyObject_ClearWeakRefs((PyObject *) self);
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/* Unlock the lock so it's safe to free it */
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if (self->rlock_count > 0)
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PyThread_release_lock(self->rlock_lock);
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/* self->rlock_lock can be NULL if PyThread_allocate_lock() failed
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in rlock_new() */
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if (self->rlock_lock != NULL) {
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/* Unlock the lock so it's safe to free it */
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if (self->rlock_count > 0)
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PyThread_release_lock(self->rlock_lock);
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PyThread_free_lock(self->rlock_lock);
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PyThread_free_lock(self->rlock_lock);
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}
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Py_TYPE(self)->tp_free(self);
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}
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@ -452,15 +455,16 @@ rlock_new(PyTypeObject *type, PyObject *args, PyObject *kwds)
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self = (rlockobject *) type->tp_alloc(type, 0);
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if (self != NULL) {
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self->rlock_lock = PyThread_allocate_lock();
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if (self->rlock_lock == NULL) {
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type->tp_free(self);
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PyErr_SetString(ThreadError, "can't allocate lock");
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return NULL;
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}
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self->in_weakreflist = NULL;
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self->rlock_owner = 0;
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self->rlock_count = 0;
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self->rlock_lock = PyThread_allocate_lock();
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if (self->rlock_lock == NULL) {
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Py_DECREF(self);
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PyErr_SetString(ThreadError, "can't allocate lock");
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return NULL;
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}
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}
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return (PyObject *) self;
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