Minix/minix
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

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

Browse Source 
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
Download Patch File Download Diff File Expand all files Collapse all files

15
kernel/system.c
View File

@@ -89,7 +89,7 @@ PUBLIC void sys_task()
*/
if (result != EDONTREPLY) {
m.m_type = result; /* report status of call */
lock_send(proc_addr(SYSTASK), m.m_source, &m);
lock_send(SYSTASK, m.m_source, &m);
}
}
}
@@ -243,7 +243,10 @@ irq_hook_t *hook;
* interrupts are transformed into messages to a driver. The IRQ line will be
* reenabled if the policy says so.
*/
lock_notify(hook->proc_nr, HARD_INT);
message m;
m.NOTIFY_TYPE = HARD_INT;
m.NOTIFY_ARG = hook->irq;
lock_notify(HARDWARE, hook->proc_nr, &m);
return(hook->policy & IRQ_REENABLE);
}
@@ -268,6 +271,7 @@ int sig_nr; /* signal to be sent, 1 to _NSIG */
* do a core dump.
*/
register struct proc *rp, *mmp;
message m;
rp = proc_addr(proc_nr);
if (sigismember(&rp->p_pending, sig_nr))
@@ -278,12 +282,15 @@ int sig_nr; /* signal to be sent, 1 to _NSIG */
return; /* another signal already pending */
if (rp->p_flags == 0) lock_unready(rp);
rp->p_flags |= PENDING | SIG_PENDING;
lock_notify(PM_PROC_NR, KSIG_PENDING);
m.NOTIFY_TYPE = KSIG_PENDING;
m.NOTIFY_ARG = 0;
m.NOTIFY_FLAGS = 0;
lock_notify(HARDWARE, PM_PROC_NR, &m);
}
/*===========================================================================*
* umap_bios *
* umap_bios *
*===========================================================================*/
PUBLIC phys_bytes umap_bios(rp, vir_addr, bytes)
register struct proc *rp; /* pointer to proc table entry for process */