add test apps

user/src/bin/ch8_usertest.rs

@@ -0,0 +1,60 @@
+#![no_std]
+#![no_main]
+
+#[macro_use]
+extern crate user_lib;
+
+const TESTS: &[&str] = &[
+    "ch2b_hello_world\0",
+    "ch2b_power_3\0",
+    "ch2b_power_5\0",
+    "ch2b_power_7\0",
+    "ch3b_sleep\0",
+    "ch3b_sleep1\0",
+    "ch3b_yield0\0",
+    "ch3b_yield1\0",
+    "ch3b_yield2\0",
+    "ch5b_forktest2\0",
+    "ch6b_filetest_simple\0",
+    "ch7b_pipetest\0",
+    "ch8_deadlock_mutex1\0",
+    "ch8_deadlock_sem1\0",
+    "ch8_deadlock_sem2\0",
+    "ch8b_mpsc_sem\0",
+    "ch8b_phil_din_mutex\0",
+    "ch8b_race_adder_mutex_spin\0",
+    "ch8b_sync_sem\0",
+    "ch8b_test_condvar\0",
+    "ch8b_threads\0",
+    "ch8b_threads_arg\0",
+];
+
+const TEST_NUM: usize = TESTS.len();
+
+use user_lib::{exec, fork, waitpid};
+
+#[no_mangle]
+pub fn main() -> i32 {
+    let mut pids = [0; TEST_NUM];
+    for (i, &test) in TESTS.iter().enumerate() {
+        println!("Usertests: Running {}", test);
+        let pid = fork();
+        if pid == 0 {
+            exec(&*test, &[core::ptr::null::<u8>()]);
+            panic!("unreachable!");
+        } else {
+            pids[i] = pid;
+        }
+    }
+    let mut xstate: i32 = Default::default();
+    for (i, &test) in TESTS.iter().enumerate() {
+        let wait_pid = waitpid(pids[i] as usize, &mut xstate);
+        assert_eq!(pids[i], wait_pid);
+        println!(
+            "\x1b[32mUsertests: Test {} in Process {} exited with code {}\x1b[0m",
+            test, pids[i], xstate
+        );
+    }
+    println!("ch8 Usertests passed!");
+    0
+}