From 6e1ceb5ab56005fd343f52bbb8d2879e2c1493bd Mon Sep 17 00:00:00 2001
From: Sven Dziadek <s9svdzia@stud.uni-saarland.de>
Date: Mon, 16 Apr 2012 21:37:40 +0200
Subject: P-FP: make PCP available to user space       PCP was only used for
 DPCP before

tests: add some basic tests for PCP under P-FP
---
 tests/pcp.c | 54 ++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 54 insertions(+)
 create mode 100644 tests/pcp.c

(limited to 'tests')

diff --git a/tests/pcp.c b/tests/pcp.c
new file mode 100644
index 0000000..a893da6
--- /dev/null
+++ b/tests/pcp.c
@@ -0,0 +1,54 @@
+#include <fcntl.h>
+#include <unistd.h>
+#include <stdio.h>
+
+#include "tests.h"
+#include "litmus.h"
+
+
+TESTCASE(lock_pcp, P_FP,
+	 "PCP acquisition and release")
+{
+	int fd, od, cpu = 0;
+
+	SYSCALL( fd = open(".pcp_locks", O_RDONLY | O_CREAT) );
+
+	SYSCALL( sporadic_partitioned(10, 100, cpu) );
+	SYSCALL( task_mode(LITMUS_RT_TASK) );
+
+	SYSCALL( od = open_pcp_sem(fd, 0, cpu) );
+
+	SYSCALL( litmus_lock(od) );
+	SYSCALL( litmus_unlock(od) );
+
+	SYSCALL( litmus_lock(od) );
+	SYSCALL( litmus_unlock(od) );
+
+	SYSCALL( litmus_lock(od) );
+	SYSCALL( litmus_unlock(od) );
+
+	/* tasks may not unlock resources they don't own */
+	SYSCALL_FAILS(EINVAL, litmus_unlock(od) );
+
+	SYSCALL( od_close(od) );
+
+	SYSCALL( close(fd) );
+
+	SYSCALL( remove(".pcp_locks") );
+}
+
+TESTCASE(not_lock_pcp_be, P_FP,
+	 "don't let best-effort tasks lock PCP semaphores")
+{
+	int fd, od;
+
+	SYSCALL( fd = open(".pcp_locks", O_RDONLY | O_CREAT) );
+
+	/* BE task are not even allowed to open a PCP semaphore */
+	SYSCALL_FAILS(EPERM, od = open_pcp_sem(fd, 0, 1) );
+
+	SYSCALL( close(fd) );
+
+	SYSCALL( remove(".pcp_locks") );
+
+}
-- 
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