From 7c6b1548f8e3c24565d45837bbde961ece718f41 Mon Sep 17 00:00:00 2001
From: daniel <danieruru@gmail.com>
Date: Sat, 12 Jan 2013 14:50:56 +0900
Subject: Add the ability to wait for interrupts

---
 libvxi11client/perlbits/Client.xs      | 13 +++++++---
 libvxi11client/perlbits/VXI11-Client.t |  7 ++---
 libvxi11client/perlbits/perlglue.c     | 47 ++++++++++++++++++++++++----------
 libvxi11client/perlbits/perlglue.h     |  3 ++-
 4 files changed, 49 insertions(+), 21 deletions(-)

diff --git a/libvxi11client/perlbits/Client.xs b/libvxi11client/perlbits/Client.xs
index b747707..ebfc037 100644
--- a/libvxi11client/perlbits/Client.xs
+++ b/libvxi11client/perlbits/Client.xs
@@ -52,14 +52,21 @@ docmd(cmd, waitforlock)
 		RETVAL
 
 int
-enable_srq(enable, callback)
+enable_srq(enable)
 	bool	enable
-	SV *	callback
 	CODE:
-		RETVAL = glue_enable_srq(enable, callback);
+		RETVAL = glue_enable_srq(enable);
 	OUTPUT:
 		RETVAL
 
+int
+wait_for_interrupt()
+        CODE:
+                RETVAL = glue_wait_for_interrupt();
+        OUTPUT:
+                RETVAL
+
+
 int
 local(waitforlock)
 	bool	waitforlock
diff --git a/libvxi11client/perlbits/VXI11-Client.t b/libvxi11client/perlbits/VXI11-Client.t
index 5b7f35f..1c91965 100644
--- a/libvxi11client/perlbits/VXI11-Client.t
+++ b/libvxi11client/perlbits/VXI11-Client.t
@@ -8,7 +8,7 @@
 use strict;
 use warnings;
 
-use Test::More tests => 14;
+use Test::More tests => 17;
 BEGIN { use_ok('VXI11::Client') };
 
 #########################
@@ -21,8 +21,9 @@ is(&VXI11::Client::lock(0), 1, "Lock");
 is(&VXI11::Client::write("*IDN?", 6, 0, 0), 6, "Write");
 ok(&VXI11::Client::readstatusbyte(0) >= 0 , "Read status byte");
 is(&VXI11::Client::create_intr_chan(), 1, "Create intr channel");
-#is(&VXI11::Client::enable_srq(1, sub { print "Interrupt fired\n" }), 1, "Enable interrupts");
-#is(&VXI11::Client::enable_srq(0), 1, "Disable interrupts");
+is(&VXI11::Client::enable_srq(1), 1, "Enable interrupts");
+is(&VXI11::Client::wait_for_interrupt, 1, "Wait for interrupt");
+is(&VXI11::Client::enable_srq(0), 1, "Disable interrupts");
 is(&VXI11::Client::destroy_intr_chan(), 1, "Destroy intr channel");
 is(&VXI11::Client::abort(), 1, "Abort");
 is(&VXI11::Client::clear(0), 1, "Clear");
diff --git a/libvxi11client/perlbits/perlglue.c b/libvxi11client/perlbits/perlglue.c
index e870477..62d9748 100644
--- a/libvxi11client/perlbits/perlglue.c
+++ b/libvxi11client/perlbits/perlglue.c
@@ -1,23 +1,42 @@
-#include "EXTERN.h"
-#include "perl.h"
-#include "XSUB.h"
-
-#include "ppport.h"
-
-#include "perlglue.h"
+#include <stdbool.h>
+#include <glib.h>
+#include "libvxi11client.h"
 
 #define INTERRUPTHANDLE "libvxi11client"
 
-extern int vxi11_enable_srq(bool enable, char* handle, void (*callback)(void));
+GAsyncQueue* interruptqueue;
 
-static SV* perlcallback = NULL;
+typedef struct {
+	GTimeVal when;
+} Event;
 
 static void interruptcallback(void) {
-	//PUSHMARK(SP);
-	call_sv(perlcallback, G_DISCARD | G_NOARGS);
+	Event* event = g_malloc(sizeof(Event));
+	g_get_current_time(&event->when);
+	g_async_queue_push(interruptqueue, event);
+}
+
+int glue_enable_srq(bool enable) {
+	if (enable) {
+		interruptqueue = g_async_queue_new();
+		return vxi11_enable_srq(enable, INTERRUPTHANDLE, interruptcallback);
+	}
+	else {
+		int ret = vxi11_enable_srq(enable, NULL, NULL);
+		g_free(interruptqueue);
+		return ret;
+	}
 }
 
-int glue_enable_srq(bool enable, SV* callback) {
-	perlcallback = callback;
-	return vxi11_enable_srq(enable, INTERRUPTHANDLE, interruptcallback);
+int glue_wait_for_interrupt() {
+	GTimeVal timeout;
+	g_get_current_time(&timeout);
+	g_time_val_add(&timeout, 2500);
+	gpointer event = g_async_queue_timed_pop(interruptqueue, &timeout);
+	if (event != NULL) {
+		g_free(event);
+		return 1;
+	}
+	else
+		return 0;
 }
diff --git a/libvxi11client/perlbits/perlglue.h b/libvxi11client/perlbits/perlglue.h
index 09e71aa..e2ded42 100644
--- a/libvxi11client/perlbits/perlglue.h
+++ b/libvxi11client/perlbits/perlglue.h
@@ -1,5 +1,6 @@
 #include <EXTERN.h>
 #include <perl.h>
 
-int glue_enable_srq(bool enable, SV* callback);
+int glue_enable_srq(bool enable);
+int glue_wait_for_interrupt(void);
 
-- 
cgit