1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
|
// 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.
#include "v8.h"
#include "oprofile-agent.h"
namespace v8 {
namespace internal {
#ifdef ENABLE_OPROFILE_AGENT
op_agent_t OProfileAgent::handle_ = NULL;
#endif
bool OProfileAgent::Initialize() {
#ifdef ENABLE_OPROFILE_AGENT
if (FLAG_oprofile) {
if (handle_ != NULL) return false;
// Disable code moving by GC.
FLAG_always_compact = false;
FLAG_never_compact = true;
handle_ = op_open_agent();
return (handle_ != NULL);
} else {
return true;
}
#else
return true;
#endif
}
void OProfileAgent::TearDown() {
#ifdef ENABLE_OPROFILE_AGENT
if (handle_ != NULL) {
op_close_agent(handle_);
}
#endif
}
void OProfileAgent::CreateNativeCodeRegion(const char* name,
const void* ptr, unsigned int size) {
#ifdef ENABLE_OPROFILE_AGENT
if (handle_ == NULL) return;
op_write_native_code(handle_, name, (uint64_t)ptr, ptr, size);
#endif
}
void OProfileAgent::CreateNativeCodeRegion(String* name,
const void* ptr, unsigned int size) {
#ifdef ENABLE_OPROFILE_AGENT
if (handle_ != NULL) {
const char* func_name;
SmartPointer<char> str =
name->ToCString(DISALLOW_NULLS, ROBUST_STRING_TRAVERSAL);
func_name = name->length() > 0 ? *str : "<anonymous>";
CreateNativeCodeRegion(func_name, ptr, size);
}
#endif
}
void OProfileAgent::CreateNativeCodeRegion(String* name, String* source,
int line_num, const void* ptr, unsigned int size) {
#ifdef ENABLE_OPROFILE_AGENT
if (handle_ != NULL) {
Vector<char> buf = Vector<char>::New(OProfileAgent::kFormattingBufSize);
const char* func_name;
SmartPointer<char> str =
name->ToCString(DISALLOW_NULLS, ROBUST_STRING_TRAVERSAL);
func_name = name->length() > 0 ? *str : "<anonymous>";
SmartPointer<char> source_str =
source->ToCString(DISALLOW_NULLS, ROBUST_STRING_TRAVERSAL);
if (v8::internal::OS::SNPrintF(buf, "%s %s:%d",
func_name, *source_str, line_num) != -1) {
CreateNativeCodeRegion(buf.start(), ptr, size);
} else {
CreateNativeCodeRegion("<script/func name too long>", ptr, size);
}
}
#endif
}
} }
|
