diff options
| author | Corinna Vinschen <corinna@vinschen.de> | 2013-01-18 13:35:05 +0400 |
|---|---|---|
| committer | Corinna Vinschen <corinna@vinschen.de> | 2013-01-18 13:35:05 +0400 |
| commit | b31aa3904ccea9c6e66da861f8d44a266f69a043 (patch) | |
| tree | da7c3e7c6861554a48b6fe0904b4509b836c804b | |
| parent | c5eb7a4971c9f6d93cf9d03c7cbaf1d9144afdf0 (diff) | |
* mmap.cc (handler_disk_file::msync): Add call to FlushFileBuffers
to implement MS_SYNC.
| -rw-r--r-- | winsup/cygwin/ChangeLog | 5 | ||||
| -rw-r--r-- | winsup/cygwin/mmap.cc | 9 |
2 files changed, 13 insertions, 1 deletions
diff --git a/winsup/cygwin/ChangeLog b/winsup/cygwin/ChangeLog index 9920d98e4..f75aa354c 100644 --- a/winsup/cygwin/ChangeLog +++ b/winsup/cygwin/ChangeLog @@ -1,3 +1,8 @@ +2013-01-18 Christopher Faylor <me.cygwin2013@cgf.cx> + + * mmap.cc (handler_disk_file::msync): Add call to FlushFileBuffers + to implement MS_SYNC. + 2013-01-17 Christopher Faylor <me.cygwin2013@cgf.cx> * mmap.cc (handler_disk_file::msync): Retry up to 99 times if diff --git a/winsup/cygwin/mmap.cc b/winsup/cygwin/mmap.cc index 0ede7e6ab..da89d9d81 100644 --- a/winsup/cygwin/mmap.cc +++ b/winsup/cygwin/mmap.cc @@ -1664,7 +1664,14 @@ fhandler_disk_file::msync (HANDLE h, caddr_t addr, size_t len, int flags) cygwin list. So retry 99 times and hope we get lucky. */ for (int i = 0; i < retry; i++) if (FlushViewOfFile (addr, len)) - return 0; + { + /* FlushViewOfFile just triggers the action and returns immediately, + so it's equivalent to MS_ASYNC. MS_SYNC requires another call to + FlushFileBuffers. */ + if (flags & MS_SYNC) + FlushFileBuffers (h); + return 0; + } else if (GetLastError () != ERROR_LOCK_VIOLATION) break; else if (i < (retry - 1)) |