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added interrupt proc ctl message

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This commit is contained in:
aiju 2011-08-20 12:30:06 +02:00
parent 0a0435dbc1
commit 8434f98cdd
4 changed files with 36 additions and 11 deletions
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28
sys/src/lib9p/queue.c
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@ -4,24 +4,27 @@
#include <fcall.h>
#include <9p.h>
static int
_reqqueuenote(void *, char *note)
{
return strcmp(note, "flush") == 0;
}
static void
_reqqueueproc(void *v)
{
Reqqueue *q;
Req *r;
void (*f)(Req *);
int fd;
char *buf;
q = v;
rfork(RFNOTEG);
threadnotify(_reqqueuenote, 1);
buf = smprint("/proc/%d/ctl", getpid());
fd = open(buf, OWRITE);
free(buf);
for(;;){
qlock(q);
q->flush = 0;
if(fd >= 0)
write(fd, "nointerrupt", 11);
q->cur = nil;
while(q->next == q)
rsleep(q);
@ -65,9 +68,18 @@ reqqueuepush(Reqqueue *q, Req *r, void (*f)(Req *))
void
reqqueueflush(Reqqueue *q, Req *r)
{
char buf[128];
int fd;
qlock(q);
if(q->cur == r){
postnote(PNPROC, q->pid, "flush");
sprint(buf, "/proc/%d/ctl", q->pid);
fd = open(buf, OWRITE);
if(fd >= 0){
write(fd, "interrupt", 9);
close(fd);
}
q->flush++;
qunlock(q);
}else{
if(r->qu.next != nil){