Issue #6915: Under Windows, os.listdir() didn't release the Global
Interpreter Lock around all system calls. Original patch by Ryan Kelly.
diff --git a/Modules/posixmodule.c b/Modules/posixmodule.c
index 0b14f5c..449093a 100644
--- a/Modules/posixmodule.c
+++ b/Modules/posixmodule.c
@@ -1229,7 +1229,7 @@
/* FILE_FLAG_BACKUP_SEMANTICS is required to open a directory */
FILE_ATTRIBUTE_NORMAL|FILE_FLAG_BACKUP_SEMANTICS,
NULL);
-
+
if(hFile == INVALID_HANDLE_VALUE) {
/* Either the target doesn't exist, or we don't have access to
get a handle to it. If the former, we need to return an error.
@@ -2353,7 +2353,9 @@
free(wnamebuf);
return NULL;
}
+ Py_BEGIN_ALLOW_THREADS
hFindFile = FindFirstFileW(wnamebuf, &wFileData);
+ Py_END_ALLOW_THREADS
if (hFindFile == INVALID_HANDLE_VALUE) {
int error = GetLastError();
if (error == ERROR_FILE_NOT_FOUND) {
@@ -2430,7 +2432,9 @@
if ((d = PyList_New(0)) == NULL)
return NULL;
+ Py_BEGIN_ALLOW_THREADS
hFindFile = FindFirstFile(namebuf, &FileData);
+ Py_END_ALLOW_THREADS
if (hFindFile == INVALID_HANDLE_VALUE) {
int error = GetLastError();
if (error == ERROR_FILE_NOT_FOUND)