l4_nchief -- deliver the thread id of the nearest partner of the invoker

1 Synopsis

#include <syscalls.h>

static inline int
l4_nchief(l4_threadid_t dest , l4_threadid_t *next_chief);

The l4_nchief() system call delivers the id of the nearest partner which would be engaged when sending a message to the specified destination.

dest: Thread id of the destination.
*next_chief: Pointer to thread id of the nearest partner, depending on return value.

The following values determine the contents of the thread id, next_chief is pointing to:

L4_NC_SAME_CLAN: The destination resides in the same clan, its id is returned.
L4_NC_INNER_CLAN: The destination resides in an inner clan, whose chief is in the same clan as the caller. The call returns the id of this chief.
L4_NC_OUTER_CLAN: The destination is outside of the invoker's clan. It's own chief's id is returned.

l4_thread_ex_regs , l4_fpage_unmap , l4_myself , l4_thread_switch , l4_thread_schedule , l4_task_new

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