New tutorial app for DDMS native heap tracker.
Change-Id: Ia8d35bc1ee44c6aaffe6fa10c6339edfa053aba4
diff --git a/tutorials/MoarRam/jni/foo.c b/tutorials/MoarRam/jni/foo.c
new file mode 100644
index 0000000..a318c74
--- /dev/null
+++ b/tutorials/MoarRam/jni/foo.c
@@ -0,0 +1,58 @@
+/*
+ * Copyright (C) 2013 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <jni.h>
+#include <cutils/log.h>
+
+#if defined(LOG_TAG)
+#undef LOG_TAG
+#define LOG_TAG "MOARRAM"
+#endif
+
+char *gPtr;
+static int num32ByteBlocks;
+
+void
+Java_com_android_benchmark_moarram_MainActivity_add32ByteBlocksNative(
+ JNIEnv* env,
+ jobject this)
+{
+ char **ptr = malloc(32);
+ *ptr = gPtr;
+ gPtr = (char *) ptr;
+ num32ByteBlocks++;
+ ALOGW("%d 32-byte blocks allocated so far (just allocated %p)",
+ num32ByteBlocks, gPtr);
+}
+
+void
+Java_com_android_benchmark_moarram_MainActivity_free32ByteBlocksNative(
+ JNIEnv* env,
+ jobject this)
+{
+ if (gPtr == NULL) {
+ ALOGW("All 32-byte blocks are freed");
+ return;
+ }
+
+ char **ptr = (char **) gPtr;
+ gPtr = *ptr;
+ free(ptr);
+ num32ByteBlocks--;
+ ALOGW("%d 32-byte blocks allocated so far (just freed %p)",
+ num32ByteBlocks, ptr);
+}