DEP: remove allocation_tracking, deprecate PyDataMem_SetEventHook (#20394)

* DEP: remove allocation_tracking

* DOC: add release note

* DEP: deprecate PyDataMem_SetEventHook

* DOC: fix name of release note

* fixes from review

* DOC: document deprecation of PyDataMem_EventHookFunc

1 files changed, 0 insertions, 42 deletions

diff --git a/tools/allocation_tracking/alloc_hook.pyx b/tools/allocation_tracking/alloc_hook.pyx
deleted file mode 100644
index eeefe1704..000000000
--- a/tools/allocation_tracking/alloc_hook.pyx
+++ /dev/null
@@ -1,42 +0,0 @@
-# A cython wrapper for using python functions as callbacks for
-# PyDataMem_SetEventHook.
-
-cimport numpy as np
-
-cdef extern from "Python.h":
-    object PyLong_FromVoidPtr(void *)
-    void *PyLong_AsVoidPtr(object)
-
-ctypedef void PyDataMem_EventHookFunc(void *inp, void *outp, size_t size,
-                                      void *user_data)
-cdef extern from "numpy/arrayobject.h":
-    PyDataMem_EventHookFunc * \
-        PyDataMem_SetEventHook(PyDataMem_EventHookFunc *newhook,
-                               void *user_data, void **old_data)
-
-np.import_array()
-
-cdef void pyhook(void *old, void *new, size_t size, void *user_data):
-    cdef object pyfunc = <object> user_data
-    pyfunc(PyLong_FromVoidPtr(old),
-           PyLong_FromVoidPtr(new),
-           size)
-
-class NumpyAllocHook:
-    def __init__(self, callback):
-        self.callback = callback
-
-    def __enter__(self):
-        cdef void *old_hook, *old_data
-        old_hook = <void *> \
-            PyDataMem_SetEventHook(<PyDataMem_EventHookFunc *> pyhook,
-                                    <void *> self.callback,
-                                    <void **> &old_data)
-        self.old_hook = PyLong_FromVoidPtr(old_hook)
-        self.old_data = PyLong_FromVoidPtr(old_data)
-
-    def __exit__(self):
-        PyDataMem_SetEventHook(<PyDataMem_EventHookFunc *> \
-                                    PyLong_AsVoidPtr(self.old_hook),
-                                <void *> PyLong_AsVoidPtr(self.old_data),
-                                <void **> 0)