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gf-server-jsapi: clean up old callbacks

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bjorn
2008-10-17 12:57:34 +00:00
parent 2df86ad3fb
commit 7317d41c84
1 changed files with 7 additions and 2 deletions
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9
src/server/gf-server-jsapi.js
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@@ -42,10 +42,15 @@ gf.httpGetJSONP = function (url, callback) {
} }
var callbackIndex = window.jsonCallbacks.length; var callbackIndex = window.jsonCallbacks.length;
window.jsonCallbacks.push(function (output) { window.jsonCallbacks.push(function (output) {
// get rid of the script tag
document.getElementsByTagName("head")[0].removeChild(script); document.getElementsByTagName("head")[0].removeChild(script);
// let this function be garbage-collected
window.jsonCallbacks[callbackIndex] = null;
// shrink the array if possible
while (window.jsonCallbacks.length > 0 && window.jsonCallbacks[window.jsonCallbacks.length-1] == null) {
window.jsonCallbacks.pop();
}
callback(output); callback(output);
window.jsonCallbacks[callbackIndex] = null; // let the function be garbage-collected
// FIXME: there will be lots of nulls in that array, we should purge it
}); });
var callbackName = "jsonCallbacks[" + callbackIndex + "]"; var callbackName = "jsonCallbacks[" + callbackIndex + "]";