moving JAVA implementations to JNI libs

1 files changed, 62 insertions, 0 deletions

diff --git a/base/src/main/java/com/anysoftkeyboard/base/utils/GCUtils.java b/base/src/main/java/com/anysoftkeyboard/base/utils/GCUtils.java
new file mode 100644
index 000000000..d22c72d4c
--- /dev/null
+++ b/base/src/main/java/com/anysoftkeyboard/base/utils/GCUtils.java
@@ -0,0 +1,62 @@
+package com.anysoftkeyboard.base.utils;
+
+import android.text.format.DateUtils;
+import android.util.Log;
+
+public class GCUtils {
+    private static final int GC_TRY_COUNT = 2;
+    // GC_TRY_LOOP_MAX is used for the hard limit of GC wait,
+    // GC_TRY_LOOP_MAX should be greater than GC_TRY_COUNT.
+    private static final int GC_TRY_LOOP_MAX = 5;
+    private static final long GC_INTERVAL = DateUtils.SECOND_IN_MILLIS;
+    private static final GCUtils sInstance = new GCUtils();
+    private int mGCTryCount = 0;
+
+    public static GCUtils getInstance() {
+        return sInstance;
+    }
+
+    public boolean performOperationWithMemRetry(String TAG, MemRelatedOperation operation, boolean failWithException) {
+        reset();
+
+        boolean retry = true;
+        while (retry) {
+            try {
+                operation.operation();
+                return true;
+            } catch (OutOfMemoryError e) {
+                Log.w(TAG, "WOW! No memory for operation... I'll try to release some.");
+                retry = tryGCOrWait(TAG, e);
+                if (!retry && failWithException) throw e;
+            }
+        }
+        return false;
+    }
+
+    private void reset() {
+        mGCTryCount = 0;
+    }
+
+    private boolean tryGCOrWait(String metaData, Throwable t) {
+        if (mGCTryCount % GC_TRY_COUNT == 0) {
+            System.gc();
+        }
+        if (mGCTryCount > GC_TRY_LOOP_MAX) {
+            return false;
+        } else {
+            mGCTryCount++;
+            try {
+                Thread.sleep(GC_INTERVAL);
+                return true;
+            } catch (InterruptedException e) {
+                Log.e(metaData, "Sleep was interrupted.");
+                //ImeLogger.logOnException(metaData, t);
+                return false;
+            }
+        }
+    }
+
+    public interface MemRelatedOperation {
+        void operation();
+    }
+}