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* pipe.cc (getov_result): Add parameters to facilitate better EOF checking.

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(pipe_handler): Pass extra arguments to getov_result.
This commit is contained in:
Christopher Faylor
2008-12-21 01:54:32 +00:00
parent 0cf888799b
commit 91ad1942a2
2 changed files with 15 additions and 5 deletions
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6
winsup/cygwin/ChangeLog
View File

@@ -1,3 +1,9 @@
2008-12-20 Christopher Faylor <me+cygwin@cgf.cx>
* pipe.cc (getov_result): Add parameters to facilitate better EOF
checking.
(pipe_handler): Pass extra arguments to getov_result.
2008-12-20 Christopher Faylor <me+cygwin@cgf.cx>
* fhandler.cc (fhandler_base::wait_overlapped): Reorganize to eliminate

14
winsup/cygwin/pipe.cc
View File

@@ -39,10 +39,14 @@ struct pipesync
};
inline bool
getov_result (HANDLE h, DWORD& nbytes, LPOVERLAPPED ov)
getov_result (BOOL res, bool reading, HANDLE h, DWORD& nbytes, LPOVERLAPPED ov)
{
if (ov && (GetLastError () != ERROR_IO_PENDING
|| !GetOverlappedResult (h, ov, &nbytes, true)))
DWORD err = GetLastError ();
if (res || (reading && ov && !res && err == ERROR_HANDLE_EOF))
/* not an error */;
else if (!ov || (err != ERROR_IO_PENDING)
|| (!GetOverlappedResult (h, ov, &nbytes, true)
&& (!reading || (GetLastError () != ERROR_HANDLE_EOF))))
{
__seterrno ();
return false;
@@ -91,13 +95,13 @@ pipe_handler (LPVOID in_ps)
{
ResetEvent (ov.hEvent);
BOOL res = ReadFile (hread, buf, 4096, &read_bytes, rov);
if (!res && !getov_result (hread, read_bytes, rov))
if (!getov_result (res, true, hread, read_bytes, rov))
break;
if (!read_bytes)
break;
res = WriteFile (hwrite, buf, read_bytes, &write_bytes, wov);
if (!res && !getov_result (hwrite, write_bytes, wov))
if (!getov_result (res, false, hwrite, write_bytes, wov))
break;
if (write_bytes != read_bytes)
break;