CEF crashes during startup

[magreenblatt]

Since when, do I have to do this way?
Before 1750, it worked the way I showed.

A separate helper executable has always been required for CEF3. Are you building a single executable and then copying it to multiple locations? If so you need to check the return value of CefExecuteProcess.

[edominic]

We are using a seperate helper (Helper EH).
I placed it in ./Frameworks/cefclient Helper EH.app/ .... (dont know exactly the path)
The path to the application is set in browser_subprocess_path.

The return value of CefExecuteProcess is -1

[magreenblatt]

The return value of CefExecuteProcess is -1

It won't be -1 in the helper executable, hence the need to check it in your code. See the documentation on CefExecuteProcess.

[edominic]

I edited code a bit:

Code: Select all

            CefRefPtr<XYZCefClientApp> j_application(new XYZCefClientApp());

            int exit_code = CefExecuteProcess(j_args, j_application.get(), NULL);

            if (exit_code >= 0) {
                return exit_code;
            }

            bool cefinit = CefInitialize(j_args, j_cefsettings, j_application.get(), NULL);

            CefRefPtr<CefClient> j_client(new XYZCefClient());


Here is subprocess path set per jni:

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CefString(&j_cefsettings.browser_subprocess_path) = GetStringFromJNI(env, j_browser_subprocess_path);


return value on work was -1, so far I remember

[edominic]

Do I have to build Helper executable on my own?

I always extracted it from cefclient target (at the moment from cef_binary_3.1750.1738_macosx32)

Some additional information:
Our main application is written in java
in java we load our jnilib
afterwards we set (over jni) :
- CefSettings like browser_subprocess_path ...
- CefBrowserSettings like web_security, application_cache ...
- CefWindow like size
and then we call a method for initialization with start url (in jnilib):

Code: Select all

#if !OS_WIN

            CefRefPtr<XYZCefClientApp> j_application(new XYZCefClientApp());

            bool cefinit = CefInitialize(j_args, j_cefsettings, j_application.get(), NULL);
/*
            int exit_code = CefExecuteProcess(j_args, j_application.get(), NULL);

            if (exit_code >= 0) {
                return exit_code;
            }
*/
            CefRefPtr<CefClient> j_client(new XYZCefClient());

            try {
                j_browser = CefBrowserHost::CreateBrowserSync(j_windowInfo,
                        j_client,
                        j_start_url,
                        j_browserSettings,
                        0L);

            }
            catch (ExceptionHandler e) {
                return JNI_FALSE;
            }

#endif

    CefRunMessageLoop();

    CefShutdown();

If I look into Activity Monitor, there is one process called "cefclient Helper EH" which comes from my application.

[magreenblatt]

Do I have to build Helper executable on my own?

I always extracted it from cefclient target (at the moment from cef_binary_3.1750.1738_macosx32)

That should be OK. Except then you won't be able to register an extension because the registration needs to occur in the renderer process, and the renderer process is run by the helper executable.

[edominic]

So I need to implement OnWebKitInitialized in helper executable?

[magreenblatt]

So I need to implement OnWebKitInitialized in helper executable?

Correct.

[edominic]

Thanks
And how does communication between helper executable and jnilib works?

[magreenblatt]

You can look at how the JCEF project works: https://bitbucket.org/chromiumembedded/java-cef/