v8的Handle怎么转成char*

threadroc 2020-05-17 11:37:46
请问v8的js引擎怎么能把Handle<String>类型怎么转成char*类型
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源代码大师 2021-05-06
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希望对你有帮助：https://blog.csdn.net/it_xiangqiang/category_10581430.html 希望对你有帮助：https://blog.csdn.net/it_xiangqiang/category_10768339.html
elasticdump报错
elasticdump报错： FATAL ERROR: CALL_AND_RETRY_LAST Allocation failed - JavaScript heap out of memory 1: node::Abort() [node] 2: 0x8cd49c [node] 3: v8::Utils::ReportOOMFailure(char const*, bool) [node] 4: v8::internal::V8::FatalProcessOutOfMemory(char const*, bool) [node] 5: v8::internal::Factory::NewRawTwoByteString(int, v8::internal::PretenureFlag) [node] 6: v8::internal::Handle<v8::internal::String> v8::internal::JsonParser::SlowScanJsonString<v8::internal::SeqTwoByteString, unsigned short>(v8::internal::Handle<v8::internal::String>, int, int) [node] 7: v8::internal::Handle<v8::internal::String> v8::internal::JsonParser::SlowScanJsonString<v8::internal::SeqTwoByteString, unsigned short>(v8::internal::Handle<v8::internal::String>, int, int) [node] 8: v8::internal::Handle<v8::internal::String> v8::internal::JsonParser::SlowScanJsonString<v8::internal::SeqOneByteString, unsigned char>(v8::internal::Handle<v8::internal::String>, int, int) [node] 9: v8::internal::Handle<v8::internal::String> v8::internal::JsonParser::SlowScanJsonString<v8::internal::SeqOneByteString, unsigned char>(v8::internal::Handle<v8::internal::String>, int, int) [node] 10: v8::internal::Handle<v8::internal::String> v8::internal::JsonParser::SlowScanJsonString<v8::internal::SeqOneByteString, unsigned char>(v8::internal::Handle<v8::internal::String>, int, int) [node] 11: v8::internal::Handle<v8::internal::String> v8::internal::JsonParser::SlowScanJsonString<v8::internal::SeqOneByteString, unsigned char>(v8::internal::Handle<v8::internal::String>, int, int) [node] 12: v8::internal::Handle<v8::internal::String> v8::internal::JsonParser::SlowScanJsonString<v8::internal::SeqOneByteString, unsigned char>(v8::internal::Handle<v8::internal::String>, int, int) [node] 13: v8::internal::Handle<v8::internal::String> v8::internal::JsonParser::SlowScanJsonString<v8::internal::SeqOneByteString, unsigned char>(v8::internal::Handle<v8::internal::String>, int, int) [node] 14: v8::internal::Handle<v8::internal::String> v8::internal::JsonParser::SlowScanJsonString<v8::internal::SeqOneByteString, unsigned char>(v8::internal::Handle<v8::internal::String>, int, int) [node] 15: v8::internal::Handle<v8::internal::String> v8::internal::JsonParser::SlowScanJsonString<v8::internal::SeqOneByteString, unsigned char>(v8::internal::Handle<v8::internal::String>, int, int) [node] 16: v8::internal::Handle<v8::internal::String> v8::internal::JsonParser::SlowScanJsonString<v8::internal::SeqOneByteString, unsigned char>(v8::internal::Handle<v8::internal::String>, int, int) [node] 17: v8::internal::Handle<v8::internal::String> v8::internal::JsonParser::SlowScanJsonString<v8::internal::SeqOneByteString, unsigned char>(v8::internal::Handle<v8::internal::String>, int, int) [node] 18: v8::internal::Handle<v8::internal::String> v8::internal::JsonParser::SlowScanJsonString<v8::internal::SeqOneByteString, unsigned char>(v8::internal::Handle<v8::internal::String>, int, int) [node] 19: v8::internal::Handle<v8::internal::String> v8::internal::JsonParser::ScanJsonString() [node] 20: v8::internal::JsonParser::ParseJsonValue() [node] 21: v8::internal::JsonParser::ParseJsonObject() [node] 22: v8::internal::JsonParser::ParseJsonValue() [node] 23: v8::internal::JsonParser::ParseJsonObject() [node] 24: v8::internal::JsonParser::ParseJsonValue() [node] 25: v8::internal::JsonParser::ParseJsonArray() [node] 26: v8::internal::JsonParser::ParseJsonValue() [node] 27: v8::internal::JsonParser::ParseJsonObject() [node] 28: v8::internal::JsonParser::ParseJsonValue() [node] 29: v8::internal::JsonParser::ParseJsonObject() [node] 30: v8::internal::JsonParser::ParseJsonValue() [node] 31: v8::internal::JsonParser::ParseJson() [node] 32: v8::internal::Builtin_JsonParse(int, v8::internal::Object**, v8::internal::Isolate*) [node] 33: 0x384a51e8697d 增加： export NODE_OPTIONS=--max_old_space_size=4096
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Handle是使用v8的时候很重要的一个概念和类。他本质是堆对象的封装。我们通过Handle管理真正的对象，而不是直接操作对象。Handle在v8中有两个实现。一个是对外使用的一个是内部使用的。我们先看一下内部使用的。 1 内部handle template<class T> class Handle { public: INLINE(Handle(T** location)) ...
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本课程包括Java简介（什么是 Java、了解 Java 技术）、Java快速入门 （Java简介 、入门程序、入门程序讲解、常见问题）、面向对象的编程概念（什么是对象、什么是类、什么是继承、什么是接口、什么是包）等内容。
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