Add buffering to ELF file generation
Bug: 10496017
Change-Id: I3cbad249e0fb33f726bd0a504b3b6bd9b4f759c8
diff --git a/compiler/buffered_output_stream.h b/compiler/buffered_output_stream.h
new file mode 100644
index 0000000..7d874fb
--- /dev/null
+++ b/compiler/buffered_output_stream.h
@@ -0,0 +1,54 @@
+/*
+ * 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.
+ */
+
+#ifndef ART_COMPILER_BUFFERED_OUTPUT_STREAM_H_
+#define ART_COMPILER_BUFFERED_OUTPUT_STREAM_H_
+
+#include "output_stream.h"
+
+#include "globals.h"
+
+namespace art {
+
+class BufferedOutputStream : public OutputStream {
+ public:
+ explicit BufferedOutputStream(OutputStream* out);
+
+ virtual ~BufferedOutputStream() {
+ delete out_;
+ }
+
+ virtual bool WriteFully(const void* buffer, int64_t byte_count);
+
+ virtual off_t Seek(off_t offset, Whence whence);
+
+ private:
+ static const size_t kBufferSize = 8 * KB;
+
+ bool Flush();
+
+ OutputStream* const out_;
+
+ uint8_t buffer_[kBufferSize];
+
+ size_t used_;
+
+ DISALLOW_COPY_AND_ASSIGN(BufferedOutputStream);
+};
+
+} // namespace art
+
+#endif // ART_COMPILER_BUFFERED_OUTPUT_STREAM_H_