Adding support for reporting addresses of JIT compiled code to OProfile

src/oprofile-agent.h

+// Copyright 2006-2009 the V8 project authors. All rights reserved.
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+//       notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+//       copyright notice, this list of conditions and the following
+//       disclaimer in the documentation and/or other materials provided
+//       with the distribution.
+//     * Neither the name of Google Inc. nor the names of its
+//       contributors may be used to endorse or promote products derived
+//       from this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+#ifndef V8_OPROFILE_AGENT_H_
+#define V8_OPROFILE_AGENT_H_
+
+#include <stdlib.h>
+
+#include "globals.h"
+
+#ifdef ENABLE_OPROFILE_AGENT
+// opagent.h uses uint64_t type, which can be missing in
+// system headers (they have __uint64_t), but is defined
+// in V8's headers.
+#include <opagent.h>  // NOLINT
+#endif
+
+namespace v8 { namespace internal {
+
+class OProfileAgent {
+ public:
+  static bool Initialize();
+  static void TearDown();
+  static void CreateNativeCodeRegion(const char* name,
+                                     const void* ptr, unsigned int size);
+  static void CreateNativeCodeRegion(String* name,
+                                     const void* ptr, unsigned int size);
+  static void CreateNativeCodeRegion(String* name, String* source, int line_num,
+                                     const void* ptr, unsigned int size);
+#ifdef ENABLE_OPROFILE_AGENT
+  static bool is_enabled() { return handle_ != NULL; }
+
+ private:
+  static op_agent_t handle_;
+
+  // Size of the buffer that is used for composing code areas names.
+  static const int kFormattingBufSize = 256;
+#else
+  static bool is_enabled() { return false; }
+#endif
+};
+} }
+
+#endif  // V8_OPROFILE_AGENT_H_