ref: 3a8e788bef68346e2d92785f09f33557988d4d33
parent: 7169336c097386bace57b4fa8f66b86668b70f55
author: aiju <[email protected]>
date: Sun Aug 7 15:14:26 EDT 2011
5e: added semacquire/semrelease
--- a/sys/src/cmd/5e/sys.c
+++ b/sys/src/cmd/5e/sys.c
@@ -614,6 +614,36 @@
P->R[0] = alarm(msec);
}
+static void
+syssemacquire(void)
+{+ u32int addr, block;
+ long *addrt;
+
+ addr = arg(0);
+ block = arg(1);
+ if(systrace)
+ fprint(2, "semacquire(%#ux, %ud)\n", addr, block);
+ addrt = vaddrnol(addr, 4);
+ P->R[0] = noteerr(semacquire(addrt, block), 0);
+}
+
+static void
+syssemrelease(void)
+{+ u32int addr, count;
+ long *addrt;
+ Segment *seg;
+
+ addr = arg(0);
+ count = arg(1);
+ if(systrace)
+ fprint(2, "semrelease(%#ux, %ud)\n", addr, count);
+ addrt = vaddr(addr, 4, &seg);
+ P->R[0] = noteerr(semrelease(addrt, count), 0);
+ segunlock(seg);
+}
+
void
syscall(void)
{@@ -648,6 +678,8 @@
[MOUNT] sysmount,
[REMOVE] sysremove,
[ALARM] sysalarm,
+ [SEMACQUIRE] syssemacquire,
+ [SEMRELEASE] syssemrelease,
};
n = P->R[0];