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New NOTIFY system call! Queued at kernel. Duplicate messages (with same source

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and type) are overwritten with newer flags/ arguments. The interface from
within the kernel is lock_notify(). User processes can make a system call with
notify(). NOTIFY fully replaces the old notification mechanism.
This commit is contained in:
Jorrit Herder
2005-05-24 10:06:17 +00:00
parent 80e38daead
commit ccd17ecfed
22 changed files with 304 additions and 377 deletions
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8
kernel/proc.h
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@@ -33,12 +33,6 @@ struct proc {
proc_nr_t p_nr; /* number of this process (for fast access) */
notify_mask_t p_ntf_blocked; /* bit mask for blocked notifications */
notify_mask_t p_ntf_held; /* bit mask for held up notify() calls */
struct proc *p_ntf_nextheld; /* next in chain of held-up int processes */
struct notification *p_ntf_q; /* queue of pending notifications */
int p_flags; /* SENDING, RECEIVING, etc. */
struct mem_map p_memmap[NR_LOCAL_SEGS]; /* local memory map (T, D, S) */
struct far_mem p_farmem[NR_REMOTE_SEGS]; /* remote memory map */
@@ -61,6 +55,8 @@ struct proc {
int p_getfrom; /* from whom does process want to receive? */
int p_sendto; /* to whom does process want to send? */
struct notification *p_ntf_q; /* queue of pending notifications */
struct proc *p_nextready; /* pointer to next ready process */
sigset_t p_pending; /* bit map for pending signals */
unsigned p_pendcount; /* count of pending and unfinished signals */