I can't find info about permanent handle or i'm noob... can you help me and
show code example?
W dniu wtorek, 15 marca 2016 04:45:38 UTC+1 użytkownik Danny Dorfman
napisał:
>
> It is not possible to store the handle to Context in a class or a
> structure. You need to store a Permanent handle, and then make it Local on
> every entry (before you use it).
>
> On Monday, March 14, 2016 at 10:33:04 PM UTC+2, Daniel Burchardt wrote:
>>
>> Hi i try create simple module for python:
>> class Browser
>> {
>> public:
>> Browser();
>> void getContext();
>> const char* execute(const char* data);
>> int test;
>> private:
>> v8::Isolate* _isolate;
>> v8::Handle<v8::Context> _context;
>> };
>>
>>
>> Browser::Browser()
>> {
>> v8::V8::InitializeICU();
>> v8::V8::InitializeExternalStartupData("/opt/v8build/");
>> v8::Platform* platform = v8::platform::CreateDefaultPlatform();
>> v8::V8::InitializePlatform(platform);
>> v8::V8::Initialize();
>>
>> ArrayBufferAllocator allocator;
>> v8::Isolate::CreateParams create_params;
>> create_params.array_buffer_allocator = &allocator;
>>
>> _isolate = v8::Isolate::New(create_params);
>> }
>>
>> const char* Browser::execute(const char* data)
>> {
>> v8::Isolate::Scope isolate_scope(_isolate);
>> v8::HandleScope handle_scope(_isolate);
>>
>> if (test != 1) {
>> printf("%s\n", "New context");
>> test = 1;
>> _context = v8::Context::New(_isolate);
>> }
>>
>> const char* result;
>> {
>> // v8::Handle<v8::Context> context = v8::Context::New(_isolate);
>>
>> v8::Context::Scope context_scope(_context);
>>
>> v8::Local<v8::String> source =
>> v8::String::NewFromUtf8(_isolate, data,
>> v8::NewStringType::kNormal).ToLocalChecked();
>>
>> v8::Local<v8::Script> script = v8::Script::Compile(_context, source).
>> ToLocalChecked();
>> v8::Local<v8::Value> result = script->Run(_context).ToLocalChecked();
>> v8::String::Utf8Value utf8(result);
>>
>> // Konwersja danych do char*
>> int len = utf8.length() + 1;
>> char *str = (char *) calloc(sizeof(char), len);
>> strncpy(str, *utf8, len);
>>
>> return str;
>> }
>>
>> return result;
>> }
>> Tutaj wprowadź kod...
>>
>> First run execute is ok, but second run execute return error
>>
>> Program received signal SIGSEGV, Segmentation fault.
>> 0x00007ffff5998a7a in v8::Context::Enter()
>>
>> Anyone can help me? Thanks :)
>>
>
--
--
v8-users mailing list
[email protected]
http://groups.google.com/group/v8-users
---
You received this message because you are subscribed to the Google Groups
"v8-users" group.
To unsubscribe from this group and stop receiving emails from it, send an email
to [email protected].
For more options, visit https://groups.google.com/d/optout.
