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
Initialize()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
TearDown()64 void OProfileAgent::TearDown() {
65 #ifdef ENABLE_OPROFILE_AGENT
66 if (handle_ != NULL) {
67 op_close_agent(handle_);
68 }
69 #endif
70 }
71
72
CreateNativeCodeRegion(const char * name,const void * ptr,unsigned int size)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
CreateNativeCodeRegion(String * name,const void * ptr,unsigned int size)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
CreateNativeCodeRegion(String * name,String * source,int line_num,const void * ptr,unsigned int size)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