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108 lines
3.6 KiB
108 lines
3.6 KiB
// Copyright 2006-2009 the V8 project authors. All rights reserved.
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are
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// met:
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//
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// * Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above
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// copyright notice, this list of conditions and the following
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// disclaimer in the documentation and/or other materials provided
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// with the distribution.
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// * Neither the name of Google Inc. nor the names of its
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// contributors may be used to endorse or promote products derived
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// from this software without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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#include "v8.h"
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#include "oprofile-agent.h"
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namespace v8 {
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namespace internal {
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bool OProfileAgent::Initialize() {
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#ifdef ENABLE_OPROFILE_AGENT
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if (FLAG_oprofile) {
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if (handle_ != NULL) return false;
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// Disable code moving by GC.
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FLAG_always_compact = false;
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FLAG_never_compact = true;
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handle_ = op_open_agent();
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return (handle_ != NULL);
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} else {
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return true;
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}
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#else
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if (FLAG_oprofile) {
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OS::Print("Warning: --oprofile specified but binary compiled without "
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"oprofile support.\n");
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}
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return true;
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#endif
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}
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void OProfileAgent::TearDown() {
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#ifdef ENABLE_OPROFILE_AGENT
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if (handle_ != NULL) {
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op_close_agent(handle_);
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}
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#endif
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}
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#ifdef ENABLE_OPROFILE_AGENT
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op_agent_t OProfileAgent::handle_ = NULL;
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void OProfileAgent::CreateNativeCodeRegion(const char* name,
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const void* ptr, unsigned int size) {
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op_write_native_code(handle_, name, (uint64_t)ptr, ptr, size);
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}
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void OProfileAgent::CreateNativeCodeRegion(String* name,
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const void* ptr, unsigned int size) {
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const char* func_name;
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SmartPointer<char> str =
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name->ToCString(DISALLOW_NULLS, ROBUST_STRING_TRAVERSAL);
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func_name = name->length() > 0 ? *str : "<anonymous>";
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CreateNativeCodeRegion(func_name, ptr, size);
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}
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void OProfileAgent::CreateNativeCodeRegion(String* name, String* source,
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int line_num, const void* ptr, unsigned int size) {
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Vector<char> buf = Vector<char>::New(OProfileAgent::kFormattingBufSize);
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const char* func_name;
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SmartPointer<char> str =
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name->ToCString(DISALLOW_NULLS, ROBUST_STRING_TRAVERSAL);
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func_name = name->length() > 0 ? *str : "<anonymous>";
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SmartPointer<char> source_str =
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source->ToCString(DISALLOW_NULLS, ROBUST_STRING_TRAVERSAL);
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if (v8::internal::OS::SNPrintF(buf, "%s %s:%d",
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func_name, *source_str, line_num) != -1) {
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CreateNativeCodeRegion(buf.start(), ptr, size);
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} else {
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CreateNativeCodeRegion("<script/func name too long>", ptr, size);
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}
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}
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#endif // ENABLE_OPROFILE_AGENT
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} } // namespace v8::internal
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