Fix multi-line hex dumping and add unit test.
Change-Id: I7657018fef5d9c17410a9a634db275555f180014
diff --git a/runtime/base/hex_dump.h b/runtime/base/hex_dump.h
new file mode 100644
index 0000000..8769ece
--- /dev/null
+++ b/runtime/base/hex_dump.h
@@ -0,0 +1,55 @@
+/*
+ * Copyright (C) 2014 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_RUNTIME_BASE_HEX_DUMP_H_
+#define ART_RUNTIME_BASE_HEX_DUMP_H_
+
+#include "macros.h"
+
+#include <ostream>
+
+namespace art {
+
+// Prints a hex dump in this format:
+//
+// 01234560: 00 11 22 33 44 55 66 77 88 99 aa bb cc dd ee ff 0123456789abcdef
+// 01234568: 00 11 22 33 44 55 66 77 88 99 aa bb cc dd ee ff 0123456789abcdef
+class HexDump {
+ public:
+ HexDump(const void* address, size_t byte_count, bool show_actual_addresses, const char* prefix)
+ : address_(address), byte_count_(byte_count), show_actual_addresses_(show_actual_addresses),
+ prefix_(prefix) {
+ }
+
+ void Dump(std::ostream& os) const;
+
+ private:
+ const void* const address_;
+ const size_t byte_count_;
+ const bool show_actual_addresses_;
+ const char* const prefix_;
+
+ DISALLOW_COPY_AND_ASSIGN(HexDump);
+};
+
+inline std::ostream& operator<<(std::ostream& os, const HexDump& rhs) {
+ rhs.Dump(os);
+ return os;
+}
+
+} // namespace art
+
+#endif // ART_RUNTIME_BASE_HEX_DUMP_H_