open source
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lvfulong
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/**
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@file JSEnv.cpp
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@brief
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@author James
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@version 1.0
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@date 2018_8_23
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*/
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#ifdef JS_V8
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#include "JSEnv.h"
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#include <v8-profiler.h>
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#include "../../v8debug/debug-agent.h"
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#include "util/Log.h"
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#include "JSCProxyTLS.h"
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#ifdef WIN32
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#include <windows.h>
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#include <process.h>
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#endif
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//#define V8PROFILE
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namespace laya
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{
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v8::Persistent<v8::Context> Javascript::m_DebugMessageContext;
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const char* ToCString(const v8::String::Utf8Value& value)
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{
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return *value ? *value : "<string conversion failed>";
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}
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class LayaHandleScope :public v8::HandleScope
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{
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public:
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LayaHandleScope(v8::Isolate* piso)
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{
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HandleScope::Initialize(piso);
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}
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~LayaHandleScope()
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{
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}
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public:
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void Initialize(v8::Isolate* isolate)
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{
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HandleScope::Initialize(isolate);
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}
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};
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Javascript::Javascript()
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{
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m_pIsolate = NULL;
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m_pPlatform = NULL;
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m_pScope = NULL;
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m_pHandleScope = NULL;
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m_pV8Locker = NULL;
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m_pABAlloc = NULL;
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m_nListenPort = 0;
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}
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void Javascript::init(int nPort)
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{
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if (!m_pPlatform)
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{
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m_pPlatform = v8::platform::CreateDefaultPlatform();
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v8::V8::InitializePlatform(m_pPlatform);
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}
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v8::V8::Initialize();
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m_nListenPort = 0;
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if(nPort > 0 && nPort <0xFFFF )
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{
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m_nListenPort = nPort;
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}
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}
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void Javascript::uninit()
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{
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//不能在v8线程
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return;
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if (0 != m_pIsolate)
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{
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m_pIsolate->Dispose();
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m_pIsolate = 0;
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ArrayBufferAllocator* pABAlloc = ArrayBufferAllocator::getInstance();
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//pABAlloc->FreeAllAlive();
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delete pABAlloc;
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}
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}
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void Javascript::initJSEngine()
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{
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v8::Isolate::CreateParams create_params;
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m_pABAlloc = ArrayBufferAllocator::getInstance();
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create_params.array_buffer_allocator = m_pABAlloc;
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m_pIsolate = v8::Isolate::New(create_params);
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static char* flags[] =
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{
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"--expose_gc",
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"--allow-natives-syntax",//导出内部的%函数
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//"--trace-gc-verbose",
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//"--use-strict",
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//"--harmony",
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//"--print-bytecode", //
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//"--print-bytecode-filter errf1"
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//"--trace-ignition-codegen",
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//"--debug-code",
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//"--trace-opt",
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//"--trace-deopt",
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//"--prof",
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//"--code-comments",
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};
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for (auto f : flags)
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{
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v8::V8::SetFlagsFromString(f, strlen(f));
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}
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#ifdef V8PROFILE
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v8::V8::SetFlagsFromString("--prof", 6);
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char* pSingleLogFile = "--no-logfile_per_isolate";
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v8::V8::SetFlagsFromString(pSingleLogFile, strlen(pSingleLogFile));
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#ifdef ANDROID
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char* profFile = "--logfile /sdcard/lr2perf/v8.log";
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#elif WIN32
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char* profFile = "--logfile d:/temp/v8.log";
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#endif
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v8::V8::SetFlagsFromString(profFile, strlen(profFile));
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#endif
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//m_pLocker = new v8::Locker(m_pIsolate);
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//这个{}是为了能让 Scope起作用
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m_pScope = new v8::Isolate::Scope(m_pIsolate);
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m_pHandleScope = (v8::HandleScope*)malloc(sizeof(v8::HandleScope));
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new (m_pHandleScope) LayaHandleScope(m_pIsolate);
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v8::Handle<v8::ObjectTemplate> pGlobalTemplate = v8::ObjectTemplate::New(m_pIsolate);
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v8::Local<v8::Context> context = v8::Context::New(m_pIsolate, NULL, pGlobalTemplate, v8::Handle<v8::Value>());
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context->Enter();
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//v8::CpuProfiler* pCpuProf = m_pIsolate->GetCpuProfiler();
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//pCpuProf->StartCpuProfiling(v8::String::New(""));
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//pCpuProf->StopCpuProfiling(v8::String::New(""));
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if (m_nListenPort > 0)
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{
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{
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std::unique_lock<std::recursive_mutex> __guard(m_Lock);
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if (m_DebugMessageContext.IsEmpty())
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{
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m_DebugMessageContext.Reset(m_pIsolate, v8::Local<v8::Context>::New(m_pIsolate, context));
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}
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}
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}
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}
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void Javascript::uninitJSEngine()
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{
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//当js线程要结束的时候，关闭调试，否则调试器客户端在线程结束后再发送调试事件，会导致非法。
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if (m_nListenPort > 0)
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{
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//v8::Debug::DisableAgent();
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}
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if (!m_DebugMessageContext.IsEmpty())
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{
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m_DebugMessageContext.Reset();
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}
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//应该调用退出，但是context在scope中，先不退出了，发现也没有内存泄漏
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//context->Enter();
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delete m_pHandleScope;
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m_pHandleScope = NULL;
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delete m_pScope;
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m_pScope = NULL;
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m_pIsolate->Dispose();
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delete m_pABAlloc;
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}
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void Javascript::run(const char* sSource, std::function<void(void)> preRunFunc)
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{
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}
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void Javascript::run(const char* sSource)
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{
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}
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void Javascript::run(voidfun func, void* pdata)
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{
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v8::TryCatch try_catch(m_pIsolate);
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func(pdata);
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if (try_catch.HasCaught())
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{
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v8::String::Utf8Value exceptioninfo(try_catch.Exception());
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printf("Exception info [%s]\n", *exceptioninfo);
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}
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}
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//------------------------------------------------------------------------------
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JSV8Worker::JSV8Worker()
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{
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}
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JSV8Worker::~JSV8Worker()
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{
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}
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void JSV8Worker::_defRunLoop()
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{
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#ifdef WIN32
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{
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DWORD thid = GetCurrentThreadId();
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SetNameInternal(thid, m_strName.c_str());
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//threadInfoLog("start thread:%s,%d", m_strName.c_str(), thid);
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}
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#elif ANDROID
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{
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//threadInfoLog("start thread:%s,%ld", m_strName.c_str(), gettidv1());
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}
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#endif
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//开始事件
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JCEventEmitter::evtPtr startEvt(new JCEventBase);
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startEvt->m_nID = JCWorkerThread::Event_threadStart;
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emit(startEvt);
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JCWorkerThread::runObj task;
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while (!m_bStop)
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{
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v8::TryCatch trycatch(v8::Isolate::GetCurrent());
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if (!m_funcLoop)
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{
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//现在的waitdata返回false不再表示要退出。事件唤醒流程
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if (m_ThreadTasks.WaitData(&task))
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task();
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}
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else
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{
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//固定循环流程
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runQueue();
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if (!m_funcLoop())
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{
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break;
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}
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}
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if (trycatch.HasCaught())
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{
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v8::Isolate* piso = v8::Isolate::GetCurrent();
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if( piso )__JSRun::ReportException(piso, &trycatch);
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}
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}
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//退出事件
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JCEventEmitter::evtPtr stopEvt(new JCEventBase);
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stopEvt->m_nID = JCWorkerThread::Event_threadStop;
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emit(stopEvt);
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}
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void call_JSThread__defRunLoop(void* pdata)
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{
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JSV8Worker* pthis=(JSV8Worker*)pdata;
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pthis->_defRunLoop();
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}
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void JSV8Worker::_runLoop()
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{
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m_pJS->initJSEngine();
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m_pJS->run(call_JSThread__defRunLoop,this);
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m_pJS->uninitJSEngine();
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}
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}
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#endif
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//------------------------------------------------------------------------------
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//-----------------------------END FILE--------------------------------
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