puffs_cc(3) [netbsd man page]

PUFFS_CC(3)						   BSD Library Functions Manual 					       PUFFS_CC(3)

NAME

     puffs_cc -- puffs continuation routines

LIBRARY

     puffs Convenience Library (libpuffs, -lpuffs)

SYNOPSIS

     #include <puffs.h>

     void
     puffs_cc_yield(struct puffs_cc *pcc);

     void
     puffs_cc_continue(struct puffs_cc *pcc);

     void
     puffs_cc_schedule(struct puffs_cc *pcc);

     struct puffs_cc *
     puffs_cc_getcc(struct puffs_usermount *pu);

DESCRIPTION

     These routines are used for the cooperative multitasking suite present in puffs.

     puffs_cc_yield(pcc)
	   Suspend and save the current execution context and return control to the previous point.  In practice, from the file system author per-
	   spective, control returns back to where either the mainloop or where puffs_dispatch_exec() was called from.

     puffs_cc_continue(pcc)
	   Will suspend current execution and return control to where it was before before calling puffs_cc_yield().  This is rarely called
	   directly but rather through puffs_dispatch_exec().

     puffs_cc_schedule(pcc)
	   Schedule a continuation.  As opposed to puffs_cc_continue() this call returns immediately.  pcc will be scheduled sometime in the
	   future.

     puffs_cc_getcc(pu)
	   Returns the current pcc or NULL if this is the main thread.	NOTE: The argument pu will most likely disappear at some point.

     Before calling puffs_cc_yield() a file system will typically want to record some cookie value into its own internal bookkeeping.  This cookie
     should be hooked to the pcc so that the correct continuation can be continued when the event it was waiting for triggers.	Alternatively, the
     puffs_framebuf(3) framework and puffs_mainloop() can be used for handling this automatically.

SEE ALSO

     puffs(3), puffs_framebuf(3)

BSD
								 January 28, 2008							       BSD

PUFFS_NODE(3)						   BSD Library Functions Manual 					     PUFFS_NODE(3)

NAME

     puffs_node -- puffs node routines

LIBRARY

     puffs Convenience Library (libpuffs, -lpuffs)

SYNOPSIS

     #include <puffs.h>

     struct puffs_node *
     puffs_pn_new(struct puffs_usermount *pu, void *priv);

     void *
     puffs_nodewalk_fn(struct puffs_usermount *pu, struct puffs_node *pn, void *arg);

     void *
     puffs_pn_nodewalk(struct puffs_usermount *pu, puffs_nodewalk_fn nwfn, void *arg);

     void
     puffs_pn_remove(struct puffs_node *pn);

     void
     puffs_pn_put(struct puffs_node *pn);

DESCRIPTION

     puffs_pn_new(pu, priv)
	   Create a new node and attach it to the mountpoint pu.  The argument priv can be used for associating file system specific data with the
	   new node and will not be accessed by puffs.

     puffs_nodewalk_fn(pu, pn, arg)
	   A callback for puffs_nodewalk().  The list of nodes is iterated in the argument pn and the argument arg is the argument given to
	   puffs_nodewalk().

     puffs_nodewalk(pu, nwfn, arg)
	   Walk all nodes associted with the mountpoint pu and call nwfn() for them.  The walk is aborted if puffs_nodewalk_fn() returns a value
	   which is not NULL.  This value is also returned this function.  In case the whole set of nodes is traversed, NULL is returned.  This
	   function is useful for example in handling the puffs_fs_sync() callback, when cached data for every node should be flushed to stable
	   storage.

     puffs_pn_remove(pn)
	   Signal that a node has been removed from the file system, but do not yet release resources associated with the node.  This will prevent
	   the nodewalk functions from accessing the node.  If necessary, this is usually called from puffs_node_remove() and puffs_node_rmdir().

     puffs_pn_put(pn)
	   Free all resources associated with node pn.	This is typically called from puffs_node_reclaim().

SEE ALSO

     puffs(3)

BSD
								   June 24, 2007							       BSD