lablgtk_20001129* created

[helm.git] / helm / DEVEL / lablgtk / lablgtk_20001129-0.1.0 / gtkThread.ml

diff --git a/helm/DEVEL/lablgtk/lablgtk_20001129-0.1.0/gtkThread.ml b/helm/DEVEL/lablgtk/lablgtk_20001129-0.1.0/gtkThread.ml
new file mode 100644 (file)
index 0000000..3ab577e
--- /dev/null
+++ b/helm/DEVEL/lablgtk/lablgtk_20001129-0.1.0/gtkThread.ml
@@ -0,0 +1,33 @@
+(* $Id$ *)
+
+open GtkMain
+
+(* We check first whether there are some event pending, and run
+   some iterations. We then need to delay, thus focing a thread switch. *)
+
+let main () =
+  try
+    let loop = (Glib.Main.create true) in
+    Main.loops := loop :: !Main.loops;
+    while Glib.Main.is_running loop do
+      let i = ref 0 in
+      while !i < 100 && Glib.Main.pending () do
+       Glib.Main.iteration true;
+       incr i
+      done;
+      Thread.delay 0.001
+    done;
+    Main.loops := List.tl !Main.loops
+  with exn ->
+    Main.loops := List.tl !Main.loops;
+    raise exn
+      
+let start = Thread.create main
+
+let _ =
+  let mutex = Mutex.create () in
+  let depth = ref 0 in
+  GtkSignal.enter_callback :=
+    (fun () -> if !depth = 0 then Mutex.lock mutex; incr depth);
+  GtkSignal.exit_callback :=
+    (fun () -> decr depth; if !depth = 0 then Mutex.unlock mutex)