os: fork() and wait()

vlib/os/os.v

@@ -652,6 +652,16 @@ pub fn signal(signum int, handler voidptr) {
 	C.signal(signum, handler)
 }
 
+pub fn fork() int {
+	pid := C.fork()
+	return pid
+}
+
+pub fn wait() int {
+	pid := C.wait(0)
+	return pid
+}
+
 pub fn file_last_mod_unix(path string) int {
 	attr := C.stat{} 
 	//# struct stat attr;

vlib/os/os_test.v

@@ -33,3 +33,26 @@ fn test_write_and_read_string_to_file() {
 
   os.rm(filename)
 }
+
+//fn test_fork() {
+//  pid := os.fork()
+//  if pid == 0 {
+//    println('Child')
+//  }
+//  else {
+//    println('Parent')
+//  }
+//}
+
+//fn test_wait() {
+//  pid := os.fork()
+//  if pid == 0 {
+//    println('Child')
+//    exit(0)
+//  }
+//  else {
+//    cpid := os.wait()
+//    println('Parent')
+//    println(cpid)
+//  }
+//}