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- better support for non-blocking COMM and socket read/writes: 

+ added necessary semantics to fd flags
  + no longer uses fd type (but fd flags) read/write semantic behavior
- fixed socket code to use the proper manifest constants
- fixes for kernel32.GetOverlappedResult without hEvent set
- in ntdll.Nt{Read|Write}File
  + always reset the event
  + added support for longlong offsets
  + better object disposal in error handling code paths
This commit is contained in:
Eric Pouech 2004-08-17 23:37:55 +00:00 committed by Alexandre Julliard
parent 00acb5f719
commit 1ffddb4d0c
7 changed files with 91 additions and 61 deletions
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39
dlls/kernel/file.c
View File

@ -497,7 +497,7 @@ BOOL WINAPI WriteFile( HANDLE hFile, LPCVOID buffer, DWORD bytesToWrite,
BOOL WINAPI GetOverlappedResult(HANDLE hFile, LPOVERLAPPED lpOverlapped,
LPDWORD lpTransferred, BOOL bWait)
{
DWORD r;
DWORD r = WAIT_OBJECT_0;
TRACE( "(%p %p %p %x)\n", hFile, lpOverlapped, lpTransferred, bWait );
@ -506,36 +506,44 @@ BOOL WINAPI GetOverlappedResult(HANDLE hFile, LPOVERLAPPED lpOverlapped,
ERR("lpOverlapped was null\n");
return FALSE;
}
if (!lpOverlapped->hEvent)
{
ERR("lpOverlapped->hEvent was null\n");
return FALSE;
}
if ( bWait )
{
do {
if ( lpOverlapped->hEvent )
{
do
{
TRACE( "waiting on %p\n", lpOverlapped );
r = WaitForSingleObjectEx( lpOverlapped->hEvent, INFINITE, TRUE );
TRACE( "wait on %p returned %ld\n", lpOverlapped, r );
} while (r==STATUS_USER_APC);
} while ( r == WAIT_IO_COMPLETION );
}
else
{
/* busy loop */
while ( (volatile DWORD)lpOverlapped->Internal == STATUS_PENDING )
Sleep( 10 );
}
}
else if ( lpOverlapped->Internal == STATUS_PENDING )
{
/* Wait in order to give APCs a chance to run. */
/* This is cheating, so we must set the event again in case of success -
it may be a non-manual reset event. */
do {
do
{
TRACE( "waiting on %p\n", lpOverlapped );
r = WaitForSingleObjectEx( lpOverlapped->hEvent, 0, TRUE );
TRACE( "wait on %p returned %ld\n", lpOverlapped, r );
} while (r==STATUS_USER_APC);
if ( r == WAIT_OBJECT_0 )
} while ( r == WAIT_IO_COMPLETION );
if ( r == WAIT_OBJECT_0 && lpOverlapped->hEvent )
NtSetEvent( lpOverlapped->hEvent, NULL );
}
if(lpTransferred)
*lpTransferred = lpOverlapped->InternalHigh;
if ( r == WAIT_FAILED )
{
ERR("wait operation failed\n");
return FALSE;
}
if (lpTransferred) *lpTransferred = lpOverlapped->InternalHigh;
switch ( lpOverlapped->Internal )
{
@ -640,7 +648,6 @@ HFILE WINAPI _lopen( LPCSTR path, INT mode )
return (HFILE)create_file_OF( path, mode & ~OF_CREATE );
}
/***********************************************************************
* _lread (KERNEL32.@)
*/

58
dlls/ntdll/file.c
View File

@ -247,13 +247,13 @@ typedef struct async_fileio
void* apc_user;
char *buffer;
unsigned int count;
unsigned long offset;
enum fd_type fd_type;
off_t offset;
BOOL avail_mode;
} async_fileio;
static DWORD fileio_get_async_count(const struct async_private *ovp)
{
async_fileio *fileio = (async_fileio*) ovp;
const async_fileio *fileio = (const async_fileio*) ovp;
if (fileio->count < fileio->async.iosb->Information)
return 0;
@ -334,7 +334,7 @@ static void FILE_AsyncReadService(async_private *ovp)
/* check to see if the data is ready (non-blocking) */
if ( fileio->fd_type == FD_TYPE_SOCKET )
if ( fileio->avail_mode )
result = read(ovp->fd, &fileio->buffer[already], fileio->count - already);
else
{
@ -363,14 +363,15 @@ static void FILE_AsyncReadService(async_private *ovp)
return;
}
TRACE("status before: %s\n", (io_status->u.Status == STATUS_SUCCESS) ? "success" : "pending");
io_status->Information += result;
if (io_status->Information >= fileio->count || fileio->fd_type == FD_TYPE_SOCKET )
if (io_status->Information >= fileio->count || fileio->avail_mode )
io_status->u.Status = STATUS_SUCCESS;
else
io_status->u.Status = STATUS_PENDING;
TRACE("read %d more bytes %ld/%d so far\n",
result, io_status->Information, fileio->count);
TRACE("read %d more bytes %ld/%d so far (%s)\n",
result, io_status->Information, fileio->count, (io_status->u.Status == STATUS_SUCCESS) ? "success" : "pending");
}
@ -402,13 +403,12 @@ NTSTATUS WINAPI NtReadFile(HANDLE hFile, HANDLE hEvent,
PLARGE_INTEGER offset, PULONG key)
{
int unix_handle, flags;
enum fd_type type;
TRACE("(%p,%p,%p,%p,%p,%p,0x%08lx,%p,%p),partial stub!\n",
hFile,hEvent,apc,apc_user,io_status,buffer,length,offset,key);
io_status->Information = 0;
io_status->u.Status = wine_server_handle_to_fd( hFile, GENERIC_READ, &unix_handle, &type, &flags );
io_status->u.Status = wine_server_handle_to_fd( hFile, GENERIC_READ, &unix_handle, NULL, &flags );
if (io_status->u.Status) return io_status->u.Status;
if (flags & FD_FLAG_RECV_SHUTDOWN)
@ -442,6 +442,7 @@ NTSTATUS WINAPI NtReadFile(HANDLE hFile, HANDLE hEvent,
if (!(ovp = RtlAllocateHeap(GetProcessHeap(), 0, sizeof(async_fileio))))
{
wine_server_release_fd( hFile, unix_handle );
if (flags & FD_FLAG_TIMEOUT) NtClose(hEvent);
return STATUS_NO_MEMORY;
}
ovp->async.ops = (apc ? &fileio_async_ops : &fileio_nocomp_async_ops );
@ -456,18 +457,24 @@ NTSTATUS WINAPI NtReadFile(HANDLE hFile, HANDLE hEvent,
ovp->offset = 0;
else
{
ovp->offset = offset->u.LowPart;
if (offset->u.HighPart) FIXME("NIY-high part\n");
ovp->offset = offset->QuadPart;
if (offset->u.HighPart && ovp->offset == offset->u.LowPart)
FIXME("High part of offset is lost\n");
}
ovp->apc = apc;
ovp->apc_user = apc_user;
ovp->buffer = buffer;
ovp->fd_type = type;
ovp->avail_mode = (flags & FD_FLAG_AVAILABLE);
NtResetEvent(hEvent, NULL);
io_status->Information = 0;
ret = register_new_async(&ovp->async);
if (ret != STATUS_SUCCESS)
{
wine_server_release_fd( hFile, unix_handle );
if (flags & FD_FLAG_TIMEOUT) NtClose(hEvent);
RtlFreeHeap(GetProcessHeap(), 0, ovp);
return ret;
}
if (flags & FD_FLAG_TIMEOUT)
{
NtWaitForSingleObject(hEvent, TRUE, NULL);
@ -480,6 +487,15 @@ NTSTATUS WINAPI NtReadFile(HANDLE hFile, HANDLE hEvent,
/* let some APC be run, this will read some already pending data */
timeout.u.LowPart = timeout.u.HighPart = 0;
NtDelayExecution( TRUE, &timeout );
/* if we only have to read the available data, and none is available,
* simply cancel the request. If data was available, it has been read
* while in by previous call (NtDelayExecution)
*/
if ((flags & FD_FLAG_AVAILABLE) && io_status->u.Status == STATUS_PENDING)
{
io_status->u.Status = STATUS_SUCCESS;
register_old_async(&ovp->async);
}
}
return io_status->u.Status;
}
@ -526,7 +542,7 @@ static void FILE_AsyncWriteService(struct async_private *ovp)
/* write some data (non-blocking) */
if ( fileio->fd_type == FD_TYPE_SOCKET )
if ( fileio->avail_mode )
result = write(ovp->fd, &fileio->buffer[already], fileio->count - already);
else
{
@ -583,16 +599,12 @@ NTSTATUS WINAPI NtWriteFile(HANDLE hFile, HANDLE hEvent,
PLARGE_INTEGER offset, PULONG key)
{
int unix_handle, flags;
enum fd_type type;
TRACE("(%p,%p,%p,%p,%p,%p,0x%08lx,%p,%p)!\n",
hFile,hEvent,apc,apc_user,io_status,buffer,length,offset,key);
TRACE("(%p,%p,%p,%p,%p,%p,0x%08lx,%p,%p),partial stub!\n",
hFile,hEvent,apc,apc_user,io_status,buffer,length,offset,key);
io_status->Information = 0;
io_status->u.Status = wine_server_handle_to_fd( hFile, GENERIC_WRITE, &unix_handle, &type, &flags );
io_status->u.Status = wine_server_handle_to_fd( hFile, GENERIC_WRITE, &unix_handle, NULL, &flags );
if (io_status->u.Status) return io_status->u.Status;
if (flags & FD_FLAG_SEND_SHUTDOWN)
@ -620,15 +632,17 @@ NTSTATUS WINAPI NtWriteFile(HANDLE hFile, HANDLE hEvent,
ovp->async.iosb = io_status;
ovp->count = length;
if (offset) {
ovp->offset = offset->u.LowPart;
if (offset->u.HighPart) FIXME("NIY-high part\n");
ovp->offset = offset->QuadPart;
if (offset->u.HighPart && ovp->offset == offset->u.LowPart)
FIXME("High part of offset is lost\n");
} else {
ovp->offset = 0;
}
ovp->apc = apc;
ovp->apc_user = apc_user;
ovp->buffer = (void*)buffer;
ovp->fd_type = type;
ovp->avail_mode = (flags & FD_FLAG_AVAILABLE);
NtResetEvent(hEvent, NULL);
io_status->Information = 0;
ret = register_new_async(&ovp->async);

6
include/async.h
View File

@ -111,8 +111,10 @@ inline static NTSTATUS __register_async( async_private *ovp, const DWORD status
return ret;
}
#define register_old_async(ovp) \
__register_async(ovp, ovp->iosb->u.Status);
inline static NTSTATUS register_old_async( async_private *ovp )
{
return __register_async(ovp, ovp->iosb->u.Status);
}
inline static NTSTATUS register_new_async( async_private *ovp )
{

4
include/wine/server_protocol.h
View File

@ -805,6 +805,8 @@ enum fd_type
#define FD_FLAG_TIMEOUT 0x02
#define FD_FLAG_RECV_SHUTDOWN 0x04
#define FD_FLAG_SEND_SHUTDOWN 0x08
#define FD_FLAG_AVAILABLE 0x10 /* in overlap read/write operation,
* only handle available data (don't wait) */
@ -3647,6 +3649,6 @@ union generic_reply
struct set_global_windows_reply set_global_windows_reply;
};
#define SERVER_PROTOCOL_VERSION 147
#define SERVER_PROTOCOL_VERSION 148
#endif /* __WINE_WINE_SERVER_PROTOCOL_H */

6
server/protocol.def
View File

@ -612,10 +612,12 @@ enum fd_type
FD_TYPE_DEFAULT,
FD_TYPE_SOCKET
};
#define FD_FLAG_OVERLAPPED 0x01
#define FD_FLAG_TIMEOUT 0x02
#define FD_FLAG_OVERLAPPED 0x01 /* fd opened in overlapped mode */
#define FD_FLAG_TIMEOUT 0x02 /* read/write is synchronous */
#define FD_FLAG_RECV_SHUTDOWN 0x04
#define FD_FLAG_SEND_SHUTDOWN 0x08
#define FD_FLAG_AVAILABLE 0x10 /* in overlap read/write operation,
* only handle available data (don't wait) */
/* Flush a file buffers */

7
server/serial.c
View File

@ -209,9 +209,12 @@ static int serial_get_info( struct fd *fd, int *flags )
*flags = 0;
if (!(serial->options & (FILE_SYNCHRONOUS_IO_ALERT | FILE_SYNCHRONOUS_IO_NONALERT)))
*flags |= FD_FLAG_OVERLAPPED;
else if(!((serial->readinterval == MAXDWORD) &&
(serial->readmult == 0) && (serial->readconst == 0)) )
else if (!(serial->readinterval == MAXDWORD &&
serial->readmult == 0 && serial->readconst == 0))
*flags |= FD_FLAG_TIMEOUT;
if (serial->readinterval == MAXDWORD &&
serial->readmult == 0 && serial->readconst == 0)
*flags |= FD_FLAG_AVAILABLE;
return FD_TYPE_DEFAULT;
}

6
server/sock.c
View File

@ -234,7 +234,7 @@ static void sock_wake_up( struct sock *sock, int pollev )
int i;
int async_active = 0;
if ( sock->flags & FD_FLAG_OVERLAPPED )
if ( sock->flags & WSA_FLAG_OVERLAPPED )
{
if( pollev & (POLLIN|POLLPRI) && IS_READY( sock->read_q ) )
{
@ -425,7 +425,7 @@ static void sock_poll_event( struct fd *fd, int event )
sock_reselect( sock );
/* wake up anyone waiting for whatever just happened */
if ( sock->pmask & sock->mask || sock->flags & FD_FLAG_OVERLAPPED ) sock_wake_up( sock, event );
if ( sock->pmask & sock->mask || sock->flags & WSA_FLAG_OVERLAPPED ) sock_wake_up( sock, event );
/* if anyone is stupid enough to wait on the socket object itself,
* maybe we should wake them up too, just in case? */
@ -480,7 +480,7 @@ static int sock_get_info( struct fd *fd, int *flags )
struct sock *sock = get_fd_user( fd );
assert ( sock->obj.ops == &sock_ops );
*flags = 0;
*flags = FD_FLAG_AVAILABLE;
if (sock->flags & WSA_FLAG_OVERLAPPED) *flags |= FD_FLAG_OVERLAPPED;
if ( sock->type != SOCK_STREAM || sock->state & FD_WINE_CONNECTED )
{