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PUFFS_CC(3) NetBSD Library Functions Manual PUFFS_CC(3)
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puffs_cc -- puffs continuation routines
puffs Convenience Library (libpuffs, -lpuffs)
puffs_cc_yield(struct puffs_cc *pcc);
puffs_cc_continue(struct puffs_cc *pcc);
puffs_cc_schedule(struct puffs_cc *pcc);
struct puffs_cc *
puffs_cc_getcc(struct puffs_usermount *pu);
These routines are used for the cooperative multitasking suite present in
Suspend and save the current execution context and return control
to the previous point. In practice, from the file system author
perspective, control returns back to where either the mainloop or
where puffs_dispatch_exec() was called from.
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().
Schedule a continuation. As opposed to puffs_cc_continue() this
call returns immediately. pcc will be scheduled sometime in the
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 con-
tinued when the event it was waiting for triggers. Alternatively, the
puffs_framebuf(3) framework and puffs_mainloop() can be used for handling
NetBSD 5.1 January 28, 2008 NetBSD 5.1