EGL: add deferred saving of the cache

This change causes any insertions into the EGL cache to trigger an
attempt to save the cache contents to disk.  The save operation is
deferred to allow multiple cache insertions to be batched up.

Change-Id: I6cfec9c0dbbef94d3f8880860e2a365dccc296c7

1 files changed, 7 insertions, 0 deletions

diff --git a/opengl/libs/EGL/egl_cache.h b/opengl/libs/EGL/egl_cache.h
index 05d5873..4389623 100644
--- a/opengl/libs/EGL/egl_cache.h
+++ b/opengl/libs/EGL/egl_cache.h
@@ -108,6 +108,13 @@ private:
     // from disk.
     String8 mFilename;
 
+    // mSavePending indicates whether or not a deferred save operation is
+    // pending.  Each time a key/value pair is inserted into the cache via
+    // setBlob, a deferred save is initiated if one is not already pending.
+    // This will wait some amount of time and then trigger a save of the cache
+    // contents to disk.
+    bool mSavePending;
+
     // mMutex is the mutex used to prevent concurrent access to the member
     // variables. It must be locked whenever the member variables are accessed.
     mutable Mutex mMutex;