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Revision 4112a3da2e01ecc19e9f54b8ac7b383b6f5e85c8 authored by Andrew Svetlov on 07 January 2020, 14:55:19 UTC, committed by GitHub on 07 January 2020, 14:55:19 UTC
https://bugs.python.org/issue39191. (cherry picked from commit 10ac0cded26d91c3468e5e5a87cecad7fc0bcebd) Co-authored-by: Andrew Svetlov <andrew.svetlov@gmail.com>
1 parent a6b3758
Tip revision: 4112a3da2e01ecc19e9f54b8ac7b383b6f5e85c8 authored by Andrew Svetlov on 07 January 2020, 14:55:19 UTC
[3.8] bpo-39191: Fix RuntimeWarning in asyncio test (GH-17863) (#17894)
[3.8] bpo-39191: Fix RuntimeWarning in asyncio test (GH-17863) (#17894)
Tip revision: 4112a3d
hashlib.h
/* Common code for use by all hashlib related modules. */
/*
* Given a PyObject* obj, fill in the Py_buffer* viewp with the result
* of PyObject_GetBuffer. Sets an exception and issues the erraction
* on any errors, e.g. 'return NULL' or 'goto error'.
*/
#define GET_BUFFER_VIEW_OR_ERROR(obj, viewp, erraction) do { \
if (PyUnicode_Check((obj))) { \
PyErr_SetString(PyExc_TypeError, \
"Unicode-objects must be encoded before hashing");\
erraction; \
} \
if (!PyObject_CheckBuffer((obj))) { \
PyErr_SetString(PyExc_TypeError, \
"object supporting the buffer API required"); \
erraction; \
} \
if (PyObject_GetBuffer((obj), (viewp), PyBUF_SIMPLE) == -1) { \
erraction; \
} \
if ((viewp)->ndim > 1) { \
PyErr_SetString(PyExc_BufferError, \
"Buffer must be single dimension"); \
PyBuffer_Release((viewp)); \
erraction; \
} \
} while(0)
#define GET_BUFFER_VIEW_OR_ERROUT(obj, viewp) \
GET_BUFFER_VIEW_OR_ERROR(obj, viewp, return NULL)
/*
* Helper code to synchronize access to the hash object when the GIL is
* released around a CPU consuming hashlib operation. All code paths that
* access a mutable part of obj must be enclosed in an ENTER_HASHLIB /
* LEAVE_HASHLIB block or explicitly acquire and release the lock inside
* a PY_BEGIN / END_ALLOW_THREADS block if they wish to release the GIL for
* an operation.
*/
#include "pythread.h"
#define ENTER_HASHLIB(obj) \
if ((obj)->lock) { \
if (!PyThread_acquire_lock((obj)->lock, 0)) { \
Py_BEGIN_ALLOW_THREADS \
PyThread_acquire_lock((obj)->lock, 1); \
Py_END_ALLOW_THREADS \
} \
}
#define LEAVE_HASHLIB(obj) \
if ((obj)->lock) { \
PyThread_release_lock((obj)->lock); \
}
/* TODO(gps): We should probably make this a module or EVPobject attribute
* to allow the user to optimize based on the platform they're using. */
#define HASHLIB_GIL_MINSIZE 2048
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