X-Git-Url: https://scm.lunaixsky.com/lunaix-os.git/blobdiff_plain/088403ac98acf7991507715d29a282dcba222053..1f37d39e678168ffc089bcde6f9ea203c4763550:/lunaix-os/kernel/lxinit.c

diff --git a/lunaix-os/kernel/lxinit.c b/lunaix-os/kernel/lxinit.c
index fa8458c..8a19841 100644
--- a/lunaix-os/kernel/lxinit.c
+++ b/lunaix-os/kernel/lxinit.c
@@ -2,22 +2,45 @@
 #include <lunaix/clock.h>
 #include <lunaix/keyboard.h>
 #include <lunaix/lunistd.h>
+#include <lunaix/lxconsole.h>
 #include <lunaix/mm/kalloc.h>
 #include <lunaix/mm/vmm.h>
 #include <lunaix/proc.h>
+#include <lunaix/signal.h>
 #include <lunaix/spike.h>
 #include <lunaix/syslog.h>
 #include <lunaix/timer.h>
-#include <lunaix/tty/tty.h>
 
 extern uint8_t __kernel_start;
 
 LOG_MODULE("INIT")
 
 // #define FORK_BOMB_DEMO
-// #define WAIT_DEMO
+#define WAIT_DEMO
+#define IN_USER_MODE
 
-void
+void __USER__
+sigchild_handler(int signum)
+{
+    kprintf(KINFO "SIGCHLD received\n");
+}
+
+void __USER__
+sigsegv_handler(int signum)
+{
+    pid_t pid = getpid();
+    kprintf(KWARN "SIGSEGV received on process %d\n", pid);
+    _exit(signum);
+}
+
+void __USER__
+sigalrm_handler(int signum)
+{
+    pid_t pid = getpid();
+    kprintf(KWARN "I, pid %d, have received an alarm!\n", pid);
+}
+
+void __USER__
 _lxinit_main()
 {
 #ifdef FORK_BOMB_DEMO
@@ -30,6 +53,12 @@ _lxinit_main()
     }
 #endif
 
+    signal(_SIGCHLD, sigchild_handler);
+    signal(_SIGSEGV, sigsegv_handler);
+    signal(_SIGALRM, sigalrm_handler);
+
+    alarm(5);
+
     int status;
 #ifdef WAIT_DEMO
     // 测试wait
@@ -40,6 +69,7 @@ _lxinit_main()
         kprintf("I am child, I am about to terminated\n");
         _exit(1);
     }
+    pause();
     pid_t child = wait(&status);
     kprintf("I am parent, my child (%d) terminated normally with code: %d.\n",
             child,
@@ -49,23 +79,22 @@ _lxinit_main()
     pid_t p = 0;
 
     if (!fork()) {
-        kprintf("Test no hang!");
-        sleep(12);
+        kprintf("Test no hang!\n");
+        sleep(6);
         _exit(0);
     }
 
     waitpid(-1, &status, WNOHANG);
 
-    // 这里是就是LunaixOS的第一个进程了！
     for (size_t i = 0; i < 5; i++) {
         pid_t pid = 0;
         if (!(pid = fork())) {
+            signal(_SIGSEGV, sigsegv_handler);
             sleep(i);
             if (i == 3) {
                 i = *(int*)0xdeadc0de; // seg fault!
             }
-            tty_put_char('0' + i);
-            tty_put_char('\n');
+            kprintf(KINFO "%d\n", i);
             _exit(0);
         }
         kprintf(KINFO "Forked %d\n", pid);
@@ -73,7 +102,11 @@ _lxinit_main()
 
     while ((p = wait(&status)) >= 0) {
         short code = WEXITSTATUS(status);
-        if (WIFEXITED(status)) {
+        if (WIFSIGNALED(status)) {
+            kprintf(KINFO "Process %d terminated by signal, exit_code: %d\n",
+                    p,
+                    code);
+        } else if (WIFEXITED(status)) {
             kprintf(KINFO "Process %d exited with code %d\n", p, code);
         } else {
             kprintf(KWARN "Process %d aborted with code %d\n", p, code);
@@ -94,15 +127,15 @@ _lxinit_main()
     struct kdb_keyinfo_pkt keyevent;
     while (1) {
         if (!kbd_recv_key(&keyevent)) {
-            // yield();
+            yield();
             continue;
         }
         if ((keyevent.state & KBD_KEY_FPRESSED) &&
             (keyevent.keycode & 0xff00) <= KEYPAD) {
-            tty_put_char((char)(keyevent.keycode & 0x00ff));
-            tty_sync_cursor();
+            console_write_char((char)(keyevent.keycode & 0x00ff));
+            // FIXME: io to vga port is privileged and cause #GP in user mode
+            // tty_sync_cursor();
         }
     }
-
     spin();
 }
\ No newline at end of file