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lvfulong
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#ifdef JS_V8
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#include "JSArrayBuffer.h"
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#include <util/JCMemorySurvey.h>
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#include <util/Log.h>
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#include "../JSInterface.h"
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#include "JSCProxyTrnasfer.h"
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namespace laya {
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//TODO 这里没有考虑多线程的问题，如果js要支持多线程的话，需要修改。
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struct JsStrBuff {
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char* _buff;
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int _len;
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static std::vector<JsStrBuff> jsstrbuffs;
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static int curIdx;
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JsStrBuff() {
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_buff = NULL;
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_len = 0;
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}
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static JsStrBuff& getAData() {
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if (JsStrBuff::curIdx >= (int)JsStrBuff::jsstrbuffs.size()) {
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JsStrBuff::jsstrbuffs.push_back(JsStrBuff());
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JsStrBuff::curIdx++;
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return JsStrBuff::jsstrbuffs.back();
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}
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else {
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return JsStrBuff::jsstrbuffs[JsStrBuff::curIdx++];
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}
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}
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};
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std::vector<JsStrBuff> JsStrBuff::jsstrbuffs;
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int JsStrBuff::curIdx = 0;
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//
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void resetJsStrBuf() {
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JsStrBuff::curIdx = 0;
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}
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char* JsCharToC(Local<Value> p_vl) {
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int len = 0;
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Local<String> str = p_vl->ToString();
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len = str->Utf8Length();
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if (len <= 0)
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return "";
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JsStrBuff& curdata = JsStrBuff::getAData();
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char*& tocharBuf = curdata._buff;
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int& tocharBufLen = curdata._len;
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//tocharBuf= new char[len + 1];
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if (len > tocharBufLen) {
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tocharBufLen = len;
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if (tocharBuf != NULL)
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delete[] tocharBuf;
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tocharBuf = new char[len+1];
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}
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else {
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//如果占用空间太大，也要重新分配
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if (tocharBufLen > 1024 ) {
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tocharBufLen = len;
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if (tocharBuf != NULL)
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delete[] tocharBuf;
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tocharBuf = new char[len+1];
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}
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}
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str->WriteUtf8(tocharBuf);
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return tocharBuf;
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}
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}
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namespace laya{
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ArrayBufferAllocator::ArrayBufferAllocator() {
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}
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ArrayBufferAllocator::~ArrayBufferAllocator() {
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}
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void* ArrayBufferAllocator::Allocate(size_t length) {
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char* pRet = new char[length];
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memset(pRet,0,length);
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return pRet;
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}
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void* ArrayBufferAllocator::AllocateUninitialized(size_t length){
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char* pRet = new char[length];
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return pRet;
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};
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void ArrayBufferAllocator::Free(void* data, size_t length)
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{
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if (data != NULL || length > 0)
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{
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delete[]((char*)data);
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}
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else
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{
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LOGI("ArrayBufferAllocator::Free data=%d length=%d",(intptr_t)data, length);
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}
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}
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ArrayBufferAllocator* ArrayBufferAllocator::getInstance(){
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return new ArrayBufferAllocator();
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}
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v8::Local<v8::ArrayBuffer> createJSAB(char* pData, int len) {
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v8::Local<v8::ArrayBuffer> ab = v8::ArrayBuffer::New(v8::Isolate::GetCurrent(), len);
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v8::ArrayBuffer::Contents contents = ab->GetContents();// ab->Externalize();
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char* pPtr = (char*)contents.Data();
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memcpy(pPtr, pData, len);
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//Externalize 以后会减去内存占用，导致不能正确GC，所以再给加回来。不知道管理ArrayBuffer的正确方法是什么。
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//v8::Isolate::GetCurrent()->AdjustAmountOfExternalAllocatedMemory(len);
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return ab;
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}
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v8::Local<v8::ArrayBuffer> createJSABAligned(char* pData, int len) {
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int asz = (len + 3) & 0xfffffffc;
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v8::Local<v8::ArrayBuffer> ab = v8::ArrayBuffer::New(v8::Isolate::GetCurrent(), asz);
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v8::ArrayBuffer::Contents contents = ab->GetContents();// ab->Externalize();
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char* pPtr = (char*)contents.Data();
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memcpy(pPtr, pData, len);
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//ArrayBuffer 自己已经初始化为0了
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//Externalize 以后会减去内存占用，导致不能正确GC，所以再给加回来。不知道管理ArrayBuffer的正确方法是什么。
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//v8::Isolate::GetCurrent()->AdjustAmountOfExternalAllocatedMemory(asz);
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return ab;
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}
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bool extractJSAB(JsValue jsval, char*& data, int& len) {
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v8::Local<v8::ArrayBuffer> ab;
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if (jsval->IsArrayBufferView()) {
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v8::Local<v8::ArrayBufferView> abv = v8::Local<v8::ArrayBufferView>::Cast(jsval);
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len = abv->ByteLength();
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ab = abv->Buffer();
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v8::ArrayBuffer::Contents contents = ab->GetContents();
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//len = contents.ByteLength(); 这种情况下，用view的长度，因为可能多个view公用一个大buffer
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data = (char*)contents.Data()+abv->ByteOffset();
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}
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else if (jsval->IsArrayBuffer()) {
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ab = v8::Local<v8::ArrayBuffer>::Cast(jsval);
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v8::ArrayBuffer::Contents contents = ab->GetContents();
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len = contents.ByteLength();
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data = (char*)contents.Data();
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}
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else {
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data = NULL;
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len = 0;
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return false;
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}
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/*
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if (ab->IsExternal()) {
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v8::ArrayBuffer::Contents contents = ab->GetContents();
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len = contents.ByteLength();
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data = (char*)contents.Data();
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}
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else {
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v8::ArrayBuffer::Contents contents = ab->Externalize();
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len = contents.ByteLength();
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v8::Isolate::GetCurrent()->AdjustAmountOfExternalAllocatedMemory(len);
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data = (char*)contents.Data();
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}
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*/
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return true;
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}
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void __JSRun::ReportException(v8::Isolate* isolate, v8::TryCatch* try_catch) {
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v8::HandleScope handle_scope(isolate);
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v8::String::Utf8Value exception(try_catch->Exception());
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const char* exception_string = ToCString(exception);
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v8::Handle<v8::Message> message = try_catch->Message();
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static char errInfo[2048];
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int curpos = 0;
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if (message.IsEmpty()) {
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// V8 didn't provide any extra information about this error; just
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// print the exception.
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int off = snprintf(errInfo, sizeof(errInfo), "%s\n", exception_string);
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//通知全局错误处理脚本
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std::string kBuf = "if(conch.onerror){conch.onerror('";
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kBuf += UrlEncode(exception_string);
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kBuf += "','undefined','undefined','undefined','";
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kBuf += UrlEncode(exception_string);
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kBuf += "');};";
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__JSRun::Run(kBuf.c_str());
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}
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else {
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auto ctx = isolate->GetCurrentContext();
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v8::String::Utf8Value fnstr (message->GetScriptResourceName());
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const char* filename_string = ToCString(fnstr);
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v8::MaybeLocal<String> source_line_maybe = message->GetSourceLine(ctx);
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v8::String::Utf8Value srclinestr(source_line_maybe.ToLocalChecked());
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const char* sourceline_string = ToCString(srclinestr);
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int linenum = message->GetLineNumber(ctx).FromJust();
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int start = message->GetStartColumn(ctx).FromMaybe(0);
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int end = message->GetEndColumn(ctx).FromMaybe(0);
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v8::ScriptOrigin origin = message->GetScriptOrigin();
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int lineoff = origin.ResourceLineOffset()->Value();
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int startcol = origin.ResourceColumnOffset()->Value();
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if (start > startcol) {
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start -= startcol;
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end -= startcol;
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}
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//错误行可能非常长，只取一部分
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char errLineSrc[128];
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if (strlen(sourceline_string) > 128) {
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int startoff = start > 50 ? (start - 50) : 0;
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start -= startoff;
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end -= startoff;
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if (end >= 128)end = 127;
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memcpy(errLineSrc, sourceline_string+startoff, 128);
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sourceline_string = errLineSrc;
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}
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curpos += snprintf(errInfo, sizeof(errInfo), "%s:%i:\n%s\n%s\n",
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filename_string,
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linenum,
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exception_string,
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sourceline_string);
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//打印具体哪一行，哪一列
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if (curpos < sizeof(errInfo)) {
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int st = curpos;
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int srclen = snprintf(errInfo + curpos, sizeof(errInfo) - curpos, "%s\n", sourceline_string);
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curpos += srclen;
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if (curpos < sizeof(errInfo)) {
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for (int si = 0; si < srclen; si++) {
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char& c = errInfo[st+si];
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if (c != ' ' && c != '\t' && c != '\r')c = ' ';
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if (si >= start && si <= end)c = '^';
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}
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}
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}
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curpos += snprintf(errInfo + curpos,sizeof(errInfo)-curpos, "\n");
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v8::String::Utf8Value stack_trace(try_catch->StackTrace());
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if (stack_trace.length() > 0) {
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const char* stack_trace_string = ToCString(stack_trace);
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if (curpos < sizeof(errInfo)) {
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curpos += snprintf(errInfo + curpos,sizeof(errInfo)-curpos, "%s", stack_trace_string);
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}
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}
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//通知全局错误处理脚本
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std::string kBuf = "if(conch.onerror){conch.onerror('";
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kBuf += UrlEncode(exception_string);
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kBuf += "','";
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kBuf += UrlEncode(filename_string);
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kBuf += "','";
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//kBuf += std::to_string(linenum);
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std::ostringstream os;
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os << linenum;
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kBuf += os.str();
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kBuf += "','";
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kBuf += "undefined";
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kBuf += "','";
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kBuf += UrlEncode(errInfo);
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kBuf += "');};";
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__JSRun::Run(kBuf.c_str());
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}
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if (gbAlertException)
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JSAlert(errInfo);
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else {
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LOGE("==JSERROR:\n%s", errInfo);
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}
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}
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}
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#endif
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