From 921f8bd6691f7b42c7ef9dd9a0ce35f32679173c Mon Sep 17 00:00:00 2001
From: Julian Viereck <julian.viereck@gmail.com>
Date: Fri, 16 Sep 2011 08:09:58 -0700
Subject: [PATCH] Tried to add a destroy function to free memeory, but doesn't
 seem to help

---
 test/driver.js |  5 +++++
 worker.js      | 20 +++++++++++++++++++-
 2 files changed, 24 insertions(+), 1 deletion(-)

diff --git a/test/driver.js b/test/driver.js
index d272aab69..79f94568b 100644
--- a/test/driver.js
+++ b/test/driver.js
@@ -50,6 +50,11 @@ function load() {
 window.onload = load;
 
 function nextTask() {
+  // If there is a pdfDoc on the last task executed, destroy it to free memory.
+  if (task && task.pdfDoc) {
+    task.pdfDoc.destroy();
+    delete task.pdfDoc;
+  }
   if (currentTaskIdx == manifest.length) {
     return done();
   }
diff --git a/worker.js b/worker.js
index eabdf66e3..1a143c1d6 100644
--- a/worker.js
+++ b/worker.js
@@ -182,7 +182,7 @@ var WorkerPDFDoc = (function() {
     var useWorker = true;
     
     if (useWorker) {
-      var worker = new Worker("../worker/boot_processor.js");
+      var worker = this.worker = new Worker("../worker/boot_processor.js");
     } else {
       // If we don't use a worker, just post/sendMessage to the main thread.
       var worker = {
@@ -262,6 +262,24 @@ var WorkerPDFDoc = (function() {
       
       var page = this.pdf.getPage(n);
       return this.pageCache[n] = new WorkerPage(this, page);
+    },
+    
+    destroy: function() {
+      console.log("destroy worker");
+      if (this.worker) {
+        this.worker.terminate();
+      }
+      if (this.fontWorker) {
+        this.fontWorker.terminate();
+      }
+      
+      for (var n in this.pageCache) {
+        delete this.pageCache[n];
+      }
+      delete this.data;
+      delete this.stream;
+      delete this.pdf;
+      delete this.catalog;
     }
   };