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- /*
- (C) 1995-96 AROS - The Amiga Replacement OS
- $Id: enqueue.c,v 1.9 1997/01/01 03:46:09 ldp Exp $
- $Log: enqueue.c,v $
- Revision 1.9 1997/01/01 03:46:09 ldp
- Committed Amiga native (support) code
-
- Changed clib to proto
-
- Revision 1.8 1996/12/10 13:51:44 aros
- Moved all #include's in the first column so makedepend can see it.
-
- Revision 1.7 1996/10/24 15:50:48 aros
- Use the official AROS macros over the __AROS versions.
-
- Revision 1.6 1996/10/21 20:47:07 aros
- Changed struct SysBase to struct ExecBase
-
- Revision 1.5 1996/08/13 13:56:01 digulla
- Replaced AROS_LA by AROS_LHA
- Replaced some AROS_LH*I by AROS_LH*
- Sorted and added includes
-
- Revision 1.4 1996/08/01 17:41:10 digulla
- Added standard header for all files
-
- Desc:
- Lang: english
- */
- /* I want the macros */
- #define AROS_ALMOST_COMPATIBLE
- #include "exec_intern.h"
- #include <exec/lists.h>
- #include <proto/exec.h>
-
- /*****************************************************************************
-
- NAME */
-
- AROS_LH2I(void, Enqueue,
-
- /* SYNOPSIS */
- AROS_LHA(struct List *, list, A0),
- AROS_LHA(struct Node *, node, A1),
-
- /* LOCATION */
- struct ExecBase *, SysBase, 45, Exec)
-
- /* FUNCTION
- Sort a node into a list. The sort-key the field node->ln_Pri.
-
- INPUTS
- list - Insert into this list. The list has to be in descending
- order in respect to the field ln_Pri of all nodes.
- node - This node is to be inserted. Note that this has to
- be a complete node and not a MinNode !
-
- RESULT
-
- NOTES
- The list has to be in descending order in respect to the field
- ln_Pri of all nodes.
-
- EXAMPLE
- struct List * list;
- struct Node * node;
-
- // Sort the node at the correct place into the list
- Enqueue (list, node);
-
- BUGS
-
- SEE ALSO
-
- INTERNALS
-
- HISTORY
- 26-08-95 digulla created after EXEC-Routine
- 26-10-95 digulla adjusted to new calling scheme
-
- ******************************************************************************/
- {
- AROS_LIBFUNC_INIT
-
- struct Node * next;
-
- assert (list);
- assert (node);
-
- /* Look through the list */
- for (next=GetHead(list); next; next=GetSucc(next))
- {
- /*
- if the NEXT node has lower prio than the new node, insert us
- before the next node
- */
- if (node->ln_Pri >= next->ln_Pri)
- {
- /* Same as insert but insert before instead of insert behind */
- node->ln_Succ = next;
- node->ln_Pred = next->ln_Pred;
-
- next->ln_Pred->ln_Succ = node;
- next->ln_Pred = node;
-
- /*
- Done. We cannot simply break the loop because of the AddTail()
- below.
- */
- return;
- }
- }
-
- /*
- If no nodes were in the list or our node has the lowest prio,
- we add it as last node
- */
- node->ln_Succ = (struct Node *)&list->lh_Tail;
- node->ln_Pred = list->lh_TailPred;
-
- list->lh_TailPred->ln_Succ = node;
- list->lh_TailPred = node;
- AROS_LIBFUNC_EXIT
- } /* Enqueue */
-
-