# HG changeset patch
# User rubidium <rubidium@openttd.org>
# Date 2010-02-20 17:30:22
# Node ID fbb94a5fa4801222bcce6cd9473d16eb2e640b3f
# Parent  95adc72db8308d0ea09b7a572af22729de39b980

(svn r19168) -Fix: under some circumstances timidity (via extmidi) would not shut down properly causing all kinds of trouble (e.g. blocked audio output). Try harder to shut down timidity and first shut down the music so shut down order is the inverse of initialisation order. Based on a patch by Jindřich Makovička.

diff --git a/src/driver.h b/src/driver.h
--- a/src/driver.h
+++ b/src/driver.h
@@ -28,12 +28,13 @@ public:
 
 	virtual ~Driver() { }
 
+	/** The type of driver */
 	enum Type {
-		DT_BEGIN = 0,
-		DT_SOUND = 0,
-		DT_MUSIC,
-		DT_VIDEO,
-		DT_END,
+		DT_BEGIN = 0, ///< Helper for iteration
+		DT_MUSIC = 0, ///< A music driver, needs to be before sound to properly shut down extmidi forked music players
+		DT_SOUND,     ///< A sound driver
+		DT_VIDEO,     ///< A video driver
+		DT_END,       ///< Helper for iteration
 	};
 
 	virtual const char *GetName() const = 0;
@@ -64,7 +65,7 @@ private:
 
 	static const char *GetDriverTypeName(Driver::Type type)
 	{
-		static const char * const driver_type_name[] = { "sound", "music", "video" };
+		static const char * const driver_type_name[] = { "music", "sound", "video" };
 		return driver_type_name[type];
 	}
 
diff --git a/src/music/extmidi.cpp b/src/music/extmidi.cpp
--- a/src/music/extmidi.cpp
+++ b/src/music/extmidi.cpp
@@ -15,6 +15,7 @@
 #include "../string_func.h"
 #include "../sound/sound_driver.hpp"
 #include "../video/video_driver.hpp"
+#include "../gfx_func.h"
 #include "extmidi.h"
 #include <fcntl.h>
 #include <sys/types.h>
@@ -108,7 +109,27 @@ void MusicDriver_ExtMidi::DoPlay()
 
 void MusicDriver_ExtMidi::DoStop()
 {
-	if (this->pid != -1) kill(this->pid, SIGTERM);
+	if (this->pid <= 0) return;
+
+	/* First try to gracefully stop for about five seconds;
+	 * 5 seconds = 5000 milliseconds, 10 ms per cycle => 500 cycles. */
+	for (int i = 0; i < 500; i++) {
+		kill(this->pid, SIGTERM);
+		if (waitpid(this->pid, NULL, WNOHANG) == this->pid) {
+			/* It has shut down, so we are done */
+			this->pid = -1;
+			return;
+		}
+		/* Wait 10 milliseconds. */
+		CSleep(10);
+	}
+
+	DEBUG(driver, 0, "extmidi: gracefully stopping failed, trying the hard way");
+	/* Gracefully stopping failed. Do it the hard way
+	 * and wait till the process finally died. */
+	kill(this->pid, SIGKILL);
+	waitpid(this->pid, NULL, 0);
+	this->pid = -1;
 }
 
 #endif /* __MORPHOS__ */