78a8cdfbe8
To profile running the JavaScript file test.js using the V8 release mode shell (assuming it is build passing prof=oprofile to the SCons build). The following commands can be used: $ tools/oprofile/start $ tools/oprofile/run test.js $ tools/oprofile/report | less $ tools/oprofile/annotate | less $ tools/oprofile/shutdown Here is a summary of the commands. For all the commands taking an executable the executable is expected to be a binary using V8. If no executable is specified the release mode V8 shell is assumed. By default the --session-dir=/tmp/oprofv8 is passed to all oprofile commands. This walue can be changed by setting environment variable OPROFILE_SESSION_DIR. When using the defaulf executable (V8 shell in release mode) it is assumed to be located in ../.. relative from the oprofile utility scripts. This default location can be overridden using the V8_SHELL_DIR environment variable. start ----- Start the oprofiling daemon. run [executable] [parameters] ----------------------------- Profile a V8 executable. Running this will reset oprofile samples, run the command and do an oprofile dump to flush samples and write ELF binaries for the generated code. The parameters are passed to the executable together with the --oprofile option. report [executable] [parameters] -------------------------------- Print the report for a profile run. The parameters are passed to opreport. E.g report --callgraph. annotate [executable] [parameters] ---------------------------------- Print annotated assembly for a profile run. The parameters are passed to opannotate. E.g annotate -threshold 1. reset ----- Reset oprofile samples. dump ---- Flush oprofile samples and write ELF binaries for the generated code. shutdown -------- Shutdown oprofile daemon. Added a warning which is printed if option --oprofile is passed to a V8 which has not been compiled with oprofile support. Review URL: http://codereview.chromium.org/125181 git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@2186 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
117 lines
3.8 KiB
C++
117 lines
3.8 KiB
C++
// 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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#ifdef ENABLE_OPROFILE_AGENT
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op_agent_t OProfileAgent::handle_ = NULL;
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#endif
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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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void OProfileAgent::CreateNativeCodeRegion(const char* name,
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const void* ptr, unsigned int size) {
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#ifdef ENABLE_OPROFILE_AGENT
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if (handle_ == NULL) return;
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op_write_native_code(handle_, name, (uint64_t)ptr, ptr, size);
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#endif
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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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#ifdef ENABLE_OPROFILE_AGENT
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if (handle_ != NULL) {
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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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#endif
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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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#ifdef ENABLE_OPROFILE_AGENT
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if (handle_ != NULL) {
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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
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}
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} }
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