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 #include "v8.h" 29 30 #include "oprofile-agent.h" 31 32 namespace v8 { 33 namespace internal { 34 35 #ifdef ENABLE_OPROFILE_AGENT 36 op_agent_t OProfileAgent::handle_ = NULL; 37 #endif 38 39 40 bool OProfileAgent::Initialize() { 41 #ifdef ENABLE_OPROFILE_AGENT 42 if (FLAG_oprofile) { 43 if (handle_ != NULL) return false; 44 45 // Disable code moving by GC. 46 FLAG_always_compact = false; 47 FLAG_never_compact = true; 48 49 handle_ = op_open_agent(); 50 return (handle_ != NULL); 51 } else { 52 return true; 53 } 54 #else 55 if (FLAG_oprofile) { 56 OS::Print("Warning: --oprofile specified but binary compiled without " 57 "oprofile support.\n"); 58 } 59 return true; 60 #endif 61 } 62 63 64 void OProfileAgent::TearDown() { 65 #ifdef ENABLE_OPROFILE_AGENT 66 if (handle_ != NULL) { 67 op_close_agent(handle_); 68 } 69 #endif 70 } 71 72 73 void OProfileAgent::CreateNativeCodeRegion(const char* name, 74 const void* ptr, unsigned int size) { 75 #ifdef ENABLE_OPROFILE_AGENT 76 if (handle_ == NULL) return; 77 op_write_native_code(handle_, name, (uint64_t)ptr, ptr, size); 78 #endif 79 } 80 81 82 void OProfileAgent::CreateNativeCodeRegion(String* name, 83 const void* ptr, unsigned int size) { 84 #ifdef ENABLE_OPROFILE_AGENT 85 if (handle_ != NULL) { 86 const char* func_name; 87 SmartPointer<char> str = 88 name->ToCString(DISALLOW_NULLS, ROBUST_STRING_TRAVERSAL); 89 func_name = name->length() > 0 ? *str : "<anonymous>"; 90 CreateNativeCodeRegion(func_name, ptr, size); 91 } 92 #endif 93 } 94 95 96 void OProfileAgent::CreateNativeCodeRegion(String* name, String* source, 97 int line_num, const void* ptr, unsigned int size) { 98 #ifdef ENABLE_OPROFILE_AGENT 99 if (handle_ != NULL) { 100 Vector<char> buf = Vector<char>::New(OProfileAgent::kFormattingBufSize); 101 const char* func_name; 102 SmartPointer<char> str = 103 name->ToCString(DISALLOW_NULLS, ROBUST_STRING_TRAVERSAL); 104 func_name = name->length() > 0 ? *str : "<anonymous>"; 105 SmartPointer<char> source_str = 106 source->ToCString(DISALLOW_NULLS, ROBUST_STRING_TRAVERSAL); 107 if (v8::internal::OS::SNPrintF(buf, "%s %s:%d", 108 func_name, *source_str, line_num) != -1) { 109 CreateNativeCodeRegion(buf.start(), ptr, size); 110 } else { 111 CreateNativeCodeRegion("<script/func name too long>", ptr, size); 112 } 113 } 114 #endif 115 } 116 } } 117
