From 6d6ae758adf41a24aa15c216f9fe49c625d1b345 Mon Sep 17 00:00:00 2001
From: Michael Wu <mwu@mozilla.com>
Date: Sun, 24 Oct 2010 10:46:04 -0700
Subject: [PATCH] Backed out changeset ddc9d5258911 due to a=bustage

---
 netwerk/cache/nsCacheService.cpp | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)

diff --git a/netwerk/cache/nsCacheService.cpp b/netwerk/cache/nsCacheService.cpp
index ccd839e8765f..aaa9cfde4d77 100644
--- a/netwerk/cache/nsCacheService.cpp
+++ b/netwerk/cache/nsCacheService.cpp
@@ -76,6 +76,10 @@
 
 #include "mozilla/FunctionTimer.h"
 
+#ifdef MOZ_IPC
+#include "mozilla/net/NeckoCommon.h"
+#endif
+
 /******************************************************************************
  * nsCacheProfilePrefObserver
  *****************************************************************************/
@@ -789,6 +793,14 @@ nsCacheService::DispatchToCacheIOThread(nsIRunnable* event)
 PRBool
 nsCacheProfilePrefObserver::DiskCacheEnabled()
 {
+#ifdef MOZ_IPC
+    // Bad Things (tm) are likely to happen if child and parent both write to
+    // disk cache.  
+    // - TODO: remove once we turn off caching entirely in child (bug 559714)
+    if (mozilla::net::IsNeckoChild())
+        return PR_FALSE;
+#endif
+
     if ((mDiskCacheCapacity == 0) || (!mDiskCacheParentDirectory))  return PR_FALSE;
     return mDiskCacheEnabled;
 }
@@ -846,6 +858,13 @@ nsCacheProfilePrefObserver::MemoryCacheEnabled()
 PRInt32
 nsCacheProfilePrefObserver::MemoryCacheCapacity()
 {
+#ifdef MOZ_IPC
+    // For now use small memory cache (1 MB) on child, just for FTP/wyciwyg
+    // - TODO: remove once we turn off caching entirely in child (bug 559714)
+    if (mozilla::net::IsNeckoChild())
+        return 1024; 
+#endif
+
     PRInt32 capacity = mMemoryCacheCapacity;
     if (capacity >= 0) {
         CACHE_LOG_DEBUG(("Memory cache capacity forced to %d\n", capacity));