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* mmap.cc (handler_disk_file::msync): Add call to FlushFileBuffers 

to implement MS_SYNC.
This commit is contained in:
Corinna Vinschen 2013-01-18 09:35:05 +00:00
parent c5eb7a4971
commit b31aa3904c
2 changed files with 13 additions and 1 deletions
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5
winsup/cygwin/ChangeLog
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@ -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> 2013-01-17 Christopher Faylor <me.cygwin2013@cgf.cx>
* mmap.cc (handler_disk_file::msync): Retry up to 99 times if * mmap.cc (handler_disk_file::msync): Retry up to 99 times if

7
winsup/cygwin/mmap.cc
View File

@ -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. */ cygwin list. So retry 99 times and hope we get lucky. */
for (int i = 0; i < retry; i++) for (int i = 0; i < retry; i++)
if (FlushViewOfFile (addr, len)) if (FlushViewOfFile (addr, len))
{
/* 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; return 0;
}
else if (GetLastError () != ERROR_LOCK_VIOLATION) else if (GetLastError () != ERROR_LOCK_VIOLATION)
break; break;
else if (i < (retry - 1)) else if (i < (retry - 1))