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Issue #10133: Make multiprocessing deallocate buffer if socket read fails. 

Patch by Hallvard B Furuseth.
This commit is contained in:
Richard Oudkerk 2012-06-11 15:12:12 +01:00
parent 2a2ce4f673
commit 197651b4e3
2 changed files with 19 additions and 13 deletions
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3
Misc/NEWS
View File

@ -70,6 +70,9 @@ Core and Builtins
Library
-------
- Issue #10133: Make multiprocessing deallocate buffer if socket read
fails. Patch by Hallvard B Furuseth.
- Issue #13854: Make multiprocessing properly handle non-integer
non-string argument to SystemExit.

29
Modules/_multiprocessing/socket_connection.c
View File

@ -117,7 +117,7 @@ static Py_ssize_t
conn_recv_string(ConnectionObject *conn, char *buffer,
size_t buflength, char **newbuffer, size_t maxlength)
{
int res;
Py_ssize_t res;
UINT32 ulength;
*newbuffer = NULL;
@ -132,20 +132,23 @@ conn_recv_string(ConnectionObject *conn, char *buffer,
if (ulength > maxlength)
return MP_BAD_MESSAGE_LENGTH;
if (ulength <= buflength) {
Py_BEGIN_ALLOW_THREADS
res = _conn_recvall(conn->handle, buffer, (size_t)ulength);
Py_END_ALLOW_THREADS
return res < 0 ? res : ulength;
} else {
*newbuffer = PyMem_Malloc((size_t)ulength);
if (*newbuffer == NULL)
if (ulength > buflength) {
*newbuffer = buffer = PyMem_Malloc((size_t)ulength);
if (buffer == NULL)
return MP_MEMORY_ERROR;
Py_BEGIN_ALLOW_THREADS
res = _conn_recvall(conn->handle, *newbuffer, (size_t)ulength);
Py_END_ALLOW_THREADS
return res < 0 ? (Py_ssize_t)res : (Py_ssize_t)ulength;
}
Py_BEGIN_ALLOW_THREADS
res = _conn_recvall(conn->handle, buffer, (size_t)ulength);
Py_END_ALLOW_THREADS
if (res >= 0) {
res = (Py_ssize_t)ulength;
} else if (*newbuffer != NULL) {
PyMem_Free(*newbuffer);
*newbuffer = NULL;
}
return res;
}
/*