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      1 // Copyright 2006-2009 the V8 project authors. All rights reserved.
      2 // Redistribution and use in source and binary forms, with or without
      3 // modification, are permitted provided that the following conditions are
      4 // met:
      5 //
      6 //     * Redistributions of source code must retain the above copyright
      7 //       notice, this list of conditions and the following disclaimer.
      8 //     * Redistributions in binary form must reproduce the above
      9 //       copyright notice, this list of conditions and the following
     10 //       disclaimer in the documentation and/or other materials provided
     11 //       with the distribution.
     12 //     * Neither the name of Google Inc. nor the names of its
     13 //       contributors may be used to endorse or promote products derived
     14 //       from this software without specific prior written permission.
     15 //
     16 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
     17 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
     18 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
     19 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
     20 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
     21 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
     22 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     23 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     24 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     25 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
     26 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     27 
     28 #ifndef V8_OPROFILE_AGENT_H_
     29 #define V8_OPROFILE_AGENT_H_
     30 
     31 #include <stdlib.h>
     32 
     33 #include "globals.h"
     34 
     35 #ifdef ENABLE_OPROFILE_AGENT
     36 // opagent.h uses uint64_t type, which can be missing in
     37 // system headers (they have __uint64_t), but is defined
     38 // in V8's headers.
     39 #include <opagent.h>  // NOLINT
     40 #endif
     41 
     42 namespace v8 {
     43 namespace internal {
     44 
     45 class OProfileAgent {
     46  public:
     47   static bool Initialize();
     48   static void TearDown();
     49   static void CreateNativeCodeRegion(const char* name,
     50                                      const void* ptr, unsigned int size);
     51   static void CreateNativeCodeRegion(String* name,
     52                                      const void* ptr, unsigned int size);
     53   static void CreateNativeCodeRegion(String* name, String* source, int line_num,
     54                                      const void* ptr, unsigned int size);
     55 #ifdef ENABLE_OPROFILE_AGENT
     56   static bool is_enabled() { return handle_ != NULL; }
     57 
     58  private:
     59   static op_agent_t handle_;
     60 
     61   // Size of the buffer that is used for composing code areas names.
     62   static const int kFormattingBufSize = 256;
     63 #else
     64   static bool is_enabled() { return false; }
     65 #endif
     66 };
     67 } }
     68 
     69 #endif  // V8_OPROFILE_AGENT_H_
     70