Update XRay to support x86-64 (RDTSC), use dladdr() as an optional way to

native_client_sdk/src/libraries/xray/xray.h

Index: native_client_sdk/src/libraries/xray/xray.h
===================================================================
--- native_client_sdk/src/libraries/xray/xray.h	(revision 208986)
+++ native_client_sdk/src/libraries/xray/xray.h	(working copy)
@@ -20,7 +20,7 @@
 #endif
 
 #define XRAY_NO_INSTRUMENT  __attribute__((no_instrument_function))
-#define XRAY_INLINE __attribute__((always_inline))
+#define XRAY_INLINE __attribute__((always_inline, no_instrument_function))
 
 #if defined(XRAY)
 
@@ -32,13 +32,22 @@
   const char* str, ...) __attribute__ ((format(printf, 2, 3)));
 
 /* This is the beginning of the public XRay API */
+
+/* Ok if mapfilename is NULL, no symbols will be loaded.  On glibc builds,
+ * XRay will also attempt to populate the symbol table with dladdr()
+ */
 XRAY_NO_INSTRUMENT void XRayInit(int stack_size, int buffer_size,
                                  int frame_count, const char* mapfilename);
 XRAY_NO_INSTRUMENT void XRayShutdown();
 XRAY_NO_INSTRUMENT void XRayStartFrame();
 XRAY_NO_INSTRUMENT void XRayEndFrame();
 XRAY_NO_INSTRUMENT void XRaySetAnnotationFilter(uint32_t filter);
-XRAY_NO_INSTRUMENT void XRaySaveReport(const char* filename, float cutoff);
+XRAY_NO_INSTRUMENT void XRaySaveReport(const char* filename,
+                                       float percent_cutoff,
+                                       int cycle_cutoff);
+XRAY_NO_INSTRUMENT void XRayReport(FILE* f,
+                                   float percent_cutoff,
+                                   int ticks_cutoff);
 #if defined(XRAY_ANNOTATE)
 #define XRayAnnotate(...) __XRayAnnotate(__VA_ARGS__)
 #define XRayAnnotateFiltered(...) __XRayAnnotateFiltered(__VA_ARGS__)
@@ -56,13 +65,15 @@
 #define XRayAnnotateFiltered(...)
 
 inline void XRayInit(int stack_size, int buffer_size,
-                          int frame_count, const char* mapfilename) {}
+                     int frame_count, const char* mapfilename) {}
 inline void XRayShutdown() {}
 inline void XRayStartFrame() {}
 inline void XRayEndFrame() {}
 inline void XRaySetAnnotationFilter(uint32_t filter) {}
-inline void XRaySaveReport(const char* filename, float cutoff) {}
-
+inline void XRaySaveReport(const char* filename,
+                           float percent_cutoff,
+                           int cycle_cutoff) {}
+inline void XRayReport(FILE* f, float percent_cutoff, int ticks_cutoff);
 #endif  /* defined(XRAY) */
 
 #ifdef __cplusplus