Hey,<\/p>\n
I still don’t completely understand how the Android threading works<\/a>. So that explains some of why my code sometimes has trouble. Here’s a good article on deadlocking in Java<\/a>.<\/p>\n In a Activity + GLSurfaceView there are at least two threads in operation. In my code I synchronize all my native methods. Some of my native methods have to call back to Java to load textures, play music, etc. I’ve found in certain cases a deadlock occurs. My guess is that the deadlock happens when:<\/p>\n – I’m receiving a touch event and I’m trying to call my native code with the event data My guess is that loading a texture is trying to acquire a lock that the Activity thread has locked, while the Activity is trying to send an event to the native code which is locked. <\/p>\n Here are ways to push code onto the other thread so that you can reduce the amount of synchronized type deadlocks.<\/p>\n Putting a item on the Activity \/ UI thread<\/strong><\/p>\n Putting an item onto the GLSurfaceView thread<\/strong><\/p>\n Anyway, hope that helps! Hey, I still don’t completely understand how the Android threading works. So that explains some of why my code sometimes has trouble. Here’s a good article on deadlocking in Java. In a Activity + GLSurfaceView there are at least two threads in operation. In my code I synchronize all my native methods. Some of my […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[112],"tags":[],"class_list":["post-921","post","type-post","status-publish","format-standard","hentry","category-android"],"_links":{"self":[{"href":"https:\/\/www.philhassey.com\/blog\/wp-json\/wp\/v2\/posts\/921","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.philhassey.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.philhassey.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.philhassey.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.philhassey.com\/blog\/wp-json\/wp\/v2\/comments?post=921"}],"version-history":[{"count":3,"href":"https:\/\/www.philhassey.com\/blog\/wp-json\/wp\/v2\/posts\/921\/revisions"}],"predecessor-version":[{"id":924,"href":"https:\/\/www.philhassey.com\/blog\/wp-json\/wp\/v2\/posts\/921\/revisions\/924"}],"wp:attachment":[{"href":"https:\/\/www.philhassey.com\/blog\/wp-json\/wp\/v2\/media?parent=921"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.philhassey.com\/blog\/wp-json\/wp\/v2\/categories?post=921"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.philhassey.com\/blog\/wp-json\/wp\/v2\/tags?post=921"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
\n– I’m rendering a scene and it is trying to load a texture.<\/p>\n\r\n myActivity.runOnUiThread(new Runnable(){\r\n public void run() {\r\n \/* do something in the Activity UI \/ thread *\/\r\n }});\r\n<\/pre>\n\r\n myGLSurfaceView.queueEvent(new Runnable(){\r\n public void run() {\r\n \/* do something on the GLSurfaceView thread *\/\r\n }});\r\n<\/pre>\n
\n-Phil<\/p>\n","protected":false},"excerpt":{"rendered":"