jehanne/qa/lib/thread/thread.c

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#include <u.h>
#include <lib9.h>
#include <thread.h>
enum
{
STACK = 2048,
};
void
clockproc(void *arg)
{
int t;
Channel *c;
c = arg;
for(t=0;; t++){
sleep(100);
sendul(c, t);
}
}
void
threadmain(int argc, char *argv[])
{
int tick, tock;
Alt a[] = {
{nil, &tick, CHANRCV},
{nil, &tock, CHANRCV},
{nil, nil, CHANEND},
};
fprint(2, "threadmain hi!\n");
a[0].c = chancreate(sizeof tick, 0);
a[1].c = chancreate(sizeof tock, 0);
proccreate(clockproc, a[0].c, STACK);
proccreate(clockproc, a[1].c, STACK);
tick = 0;
tock = 0;
while(tick < 10 || tock < 10){
switch(alt(a)){
case 0:
fprint(2, "tick %d\n", tick);
break;
case 1:
fprint(2, "tock %d\n", tock);
break;
default:
sysfatal("can't happen");
}
}
print("PASS\n");
threadexitsall("PASS");
}