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Fixes Issue #12268 for the io module - File readline, readlines and

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read or readall methods no longer lose data when an underlying read
system call is interrupted within an io module object.  IOError is no
longer raised due to a read system call returning EINTR from within
these methods.

This is a backport of changeset 781b95159954 from 3.2.
The earlier 2.7 changeset 67dc99a989cd already fixed this for the
builtin python 2.x file object.
This commit is contained in:
Gregory P. Smith 2012-10-12 13:02:06 -07:00
parent 2aa5afab4e
commit 99716166b1
7 changed files with 293 additions and 8 deletions
Download patch file Download diff file Expand all files Collapse all files

8
Modules/_io/bufferedio.c
View file

@ -710,8 +710,8 @@ _buffered_init(buffered *self)
clears the error indicator), 0 otherwise.
Should only be called when PyErr_Occurred() is true.
*/
static int
_trap_eintr(void)
int
_PyIO_trap_eintr(void)
{
static PyObject *eintr_int = NULL;
PyObject *typ, *val, *tb;
@ -1296,7 +1296,7 @@ _bufferedreader_raw_read(buffered *self, char *start, Py_ssize_t len)
*/
do {
res = PyObject_CallMethodObjArgs(self->raw, _PyIO_str_readinto, memobj, NULL);
} while (res == NULL && _trap_eintr());
} while (res == NULL && _PyIO_trap_eintr());
Py_DECREF(memobj);
if (res == NULL)
return -1;
@ -1723,7 +1723,7 @@ _bufferedwriter_raw_write(buffered *self, char *start, Py_ssize_t len)
errno = 0;
res = PyObject_CallMethodObjArgs(self->raw, _PyIO_str_write, memobj, NULL);
errnum = errno;
} while (res == NULL && _trap_eintr());
} while (res == NULL && _PyIO_trap_eintr());
Py_DECREF(memobj);
if (res == NULL)
return -1;