auto import from //depot/cupcake/@135843
diff --git a/emulator/qtools/dmtrace.h b/emulator/qtools/dmtrace.h
new file mode 100644
index 0000000..6e20921
--- /dev/null
+++ b/emulator/qtools/dmtrace.h
@@ -0,0 +1,61 @@
+// Copyright 2006 The Android Open Source Project
+
+#ifndef DMTRACE_H
+#define DMTRACE_H
+
+#include <vector>
+
+class DmTrace {
+ public:
+ struct Header {
+ uint32_t magic;
+ uint16_t version;
+ uint16_t offset;
+ uint64_t date_time;
+ };
+
+ DmTrace();
+ ~DmTrace();
+
+ void open(const char *dmtrace_file, uint64_t startTime);
+ void close();
+ void addFunctionEntry(int methodId, uint32_t cycle, uint32_t pid);
+ void addFunctionExit(int methodId, uint32_t cycle, uint32_t pid);
+ void addFunction(int functionId, const char *name);
+ void addFunction(int functionId, const char *clazz, const char *method,
+ const char *sig);
+ void parseAndAddFunction(int functionId, const char *name);
+ void addThread(int threadId, const char *name);
+ void updateName(int threadId, const char *name);
+
+ private:
+ static const Header header;
+
+ struct ThreadRecord {
+ int id;
+ const char *name;
+ };
+
+ struct FunctionRecord {
+ int id;
+ const char *name;
+ };
+
+ void write2LE(FILE* fstream, unsigned short val);
+ void write4LE(FILE* fstream, unsigned int val);
+ void write8LE(FILE* fstream, unsigned long long val);
+ void writeHeader(FILE *fstream, uint64_t startTime);
+ void writeDataRecord(FILE *fstream, int threadId,
+ unsigned int methodVal,
+ unsigned int elapsedTime);
+ void writeKeyFile(FILE *fstream);
+ void writeThreads(FILE *fstream);
+ void writeFunctions(FILE *fstream);
+
+ FILE *fData;
+ FILE *fTrace;
+ std::vector<ThreadRecord*> *threads;
+ std::vector<FunctionRecord*> *functions;
+};
+
+#endif // DMTRACE_H