* parse.y (dsym): :"symbol string" style should not contain `\0'.

* process.c (proc_detach): new method Proc#detach(pid) which
  create background watcher thread to issue waitpid. [new]

* process.c (rb_detach_process): utility function to detach
  process from C code.

* ext/pty/pty.c (pty_finalize_syswait): terminate watcher thread,
  and detach child process (by creating new idle waitpid watcher
  thread).

* ext/pty/pty.c (pty_syswait): may lost signal stopped child.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@3561 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 28 insertions, 0 deletions

diff --git a/process.c b/process.c
index 38cdfb0964..3fc7f9e065 100644
--- a/process.c
+++ b/process.c
@@ -411,6 +411,33 @@ proc_waitall()
     return result;
 }
 
+static VALUE
+detach_process_watcer(pid_p)
+    int *pid_p;
+{
+    int cpid, status;
+
+    for (;;) {
+	cpid = rb_waitpid(*pid_p, &status, WNOHANG);
+	if (cpid == -1) return Qnil;
+	rb_thread_sleep(1);
+    }
+}
+
+void
+rb_detach_process(pid)
+    int pid;
+{
+    rb_thread_create(detach_process_watcer, (void*)&pid);
+}
+
+static VALUE
+proc_detach(obj, pid)
+    VALUE pid;
+{
+    rb_detach_process(NUM2INT(pid));
+}
+
 #ifndef HAVE_STRING_H
 char *strtok();
 #endif
@@ -1319,6 +1346,7 @@ Init_process()
     rb_define_module_function(rb_mProcess, "waitpid", proc_wait, -1);
     rb_define_module_function(rb_mProcess, "waitpid2", proc_wait2, -1);
     rb_define_module_function(rb_mProcess, "waitall", proc_waitall, 0);
+    rb_define_module_function(rb_mProcess, "detach", proc_detach, 1);
 
     rb_cProcStatus = rb_define_class_under(rb_mProcess, "Status", rb_cObject);
     rb_undef_method(CLASS_OF(rb_cProcStatus), "new");