Message passing / mail system

init/init.c

@@ -6,58 +6,20 @@
 #include <string.h>
 #include <terminal.h>
 
-#define MUTEX 2000
-
-__thread volatile char letter = 'c';
-
-void app_proc (void) {
-  char arg_letter = (char)(uintptr_t)process_argument ();
-
-  letter = arg_letter;
-
-  for (;;) {
-    mutex_lock (MUTEX);
-
-    for (int i = 0; i < 3; i++)
-      test (letter);
-    /* terminal_print (&letter, 1); */
-
-    for (volatile int i = 0; i < 1000 * 1000; i++)
-      ;
-
-    mutex_unlock (MUTEX);
-  }
-
-  process_quit ();
-}
-
 void app_main (void) {
-  mutex_create (MUTEX);
-
-  letter = 'a';
-
-  /* process_exec ("ramdisk:/ce"); */
-
-  /* process_spawn (&app_proc, (void*)'b'); */
-  /* process_spawn (&app_proc, (void*)'c'); */
-  /* process_spawn (&app_proc, (void*)'d'); */
-
-  const char* path = "ramdisk:/init.cmd";
-  char buffer[1024];
-  memset (buffer, 0, sizeof (buffer));
-
-  open (path);
-  read (path, 0, (uint8_t*)buffer, sizeof (buffer));
-  close (path);
-
-  terminal_print (buffer, strlen (buffer));
+  int ce_pid = exec ("ramdisk:/ce");
+  int ce_pgid = get_procgroup (ce_pid);
 
   for (;;) {
     int ch = kb_read_key ();
 
-    if (ch < 0)
+    if (ch <= 0)
       continue;
 
-    terminal_print ((char*)&ch, 1);
+    mail_send (ce_pgid, (uint8_t*)&ch, 1);
+
+    char rcv;
+    mail_receive (&rcv, 1);
+    terminal_print (&rcv, 1);
   }
 }