>I'm having difficulty digging up the reference, but I think I recall seeing >something that said, roughly, on W32 there are 2 sets of buffers - those in >the user level library and those in the kernel level driver, and >FlushFileBuffers drains the first, while _commit drains both (it includes a >call to FlushFileBuffers).
You were correct: here is the source. int __cdecl _commit ( int filedes ) { int retval; /* if filedes out of range, complain */ if ( ((unsigned)filedes >= (unsigned)_nhandle) || !(_osfile(filedes) & FOPEN) ) { errno = EBADF; return (-1); } _lock_fh(filedes); /* if filedes open, try to commit, else fall through to bad */ if (_osfile(filedes) & FOPEN) { if ( !FlushFileBuffers((HANDLE)_get_osfhandle(filedes)) ) { retval = GetLastError(); } else { retval = 0; /* return success */ } /* map the OS return code to C errno value and return code */ if (retval == 0) { goto good; } else { _doserrno = retval; goto bad; } } bad : errno = EBADF; retval = -1; good : _unlock_fh(filedes); return (retval); } ---------------------------(end of broadcast)--------------------------- TIP 5: Have you checked our extensive FAQ? http://www.postgresql.org/users-lounge/docs/faq.html