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- /*
- (C) 1995-96 AROS - The Amiga Replacement OS
- $Id: lockdoslist.c,v 1.6 1997/01/27 00:36:24 ldp Exp $
- $Log: lockdoslist.c,v $
- Revision 1.6 1997/01/27 00:36:24 ldp
- Polish
-
- Revision 1.5 1996/12/09 13:53:33 aros
- Added empty templates for all missing functions
-
- Moved #include's into first column
-
- Revision 1.4 1996/10/24 15:50:32 aros
- Use the official AROS macros over the __AROS versions.
-
- Revision 1.3 1996/08/13 13:52:48 digulla
- Replaced <dos/dosextens.h> by "dos_intern.h" or added "dos_intern.h"
- Replaced AROS_LA by AROS_LHA
-
- Revision 1.2 1996/08/01 17:40:54 digulla
- Added standard header for all files
-
- Desc:
- Lang: english
- */
- #include <proto/exec.h>
- #include "dos_intern.h"
-
- /*****************************************************************************
-
- NAME */
- #include <proto/dos.h>
-
- AROS_LH1(struct DosList *, LockDosList,
-
- /* SYNOPSIS */
- AROS_LHA(ULONG, flags, D1),
-
- /* LOCATION */
- struct DosLibrary *, DOSBase, 109, Dos)
-
- /* FUNCTION
- Waits until the desired dos lists are free then gets a lock on them.
- A handle is returned that can be used for FindDosEntry().
- Calls to this function nest, i.e. you must call UnLockDosList()
- as often as you called LockDosList(). Always lock all lists
- at once - do not try to get a lock on one of them then on another.
-
- INPUTS
- flags - what lists to lock
-
- RESULT
- Handle to the dos list. This is not a direct pointer
- to the first list element but to a pseudo element instead.
-
- NOTES
-
- EXAMPLE
-
- BUGS
-
- SEE ALSO
-
- INTERNALS
-
- HISTORY
- 29-10-95 digulla automatically created from
- dos_lib.fd and clib/dos_protos.h
-
- *****************************************************************************/
- {
- AROS_LIBFUNC_INIT
- AROS_LIBBASE_EXT_DECL(struct DosLibrary *,DOSBase)
- if(flags&LDF_WRITE)
- ObtainSemaphore(&DOSBase->dl_DosListLock);
- else
- ObtainSemaphoreShared(&DOSBase->dl_DosListLock);
- return (struct DosList *)&DOSBase->dl_DevInfo;
- AROS_LIBFUNC_EXIT
- } /* LockDosList */
-