[wpe-webkit] Using jsc_weak_xxxx API in WPE web-extensions

[Munez Bn]

On Sun, Jul 21, 2019 at 10:12 PM Michael Catanzaro <mcatanzaro at igalia.com>
wrote:

> On Sun, Jul 21, 2019 at 10:50 AM, Munez Bn <munezbn.dev at gmail.com>
> wrote:
> > Then  I realized that it is defined in LibJavaScriptCore which is a
> > static library in WPE and dynamic in WKGTK.
>
> That shouldn't matter. The JSC symbols should be exported in
> libwpewebkit.so (instead of libjavascriptcoregtk.so). Are you not able
> to use any of the JSC API?
>

I am able to use all JSC_API but not any of  JSC_WEAK_API. I tried to find
the symbols using *readelf* */ grep  *and I found out that JSC_API symbols
are present in both libjavascriptcore & libwpewebkit, But JSC_WEAK API
symbols only available in libjavascriptcore. Thats why i am able to access
all JSC_API bu tnot JSC_WEAK_API.  Am i missing anything ?

---------------------------- readelf -------------------------------
readelf -a wpebuild/build/wpewebkit-2.24.1/lib/libJavaScriptCore.a | grep
jsc_value_function_call
   425: 0000158d   268 FUNC    GLOBAL DEFAULT   22 jsc_value_function_callv
   462: 00002355   144 FUNC    GLOBAL DEFAULT   22 jsc_value_function_call
readelf -a wpebuild/build/wpewebkit-2.24.1/lib/libWPEWebKit-1.0.so.2.4.2 |
grep jsc_value_function_call
   620: 00c38bad   268 FUNC    GLOBAL DEFAULT   10 jsc_value_function_callv
   759: 00c39975   144 FUNC    GLOBAL DEFAULT   10 jsc_value_function_call
315311: 00c38bad   268 FUNC    GLOBAL DEFAULT   10 jsc_value_function_callv
315450: 00c39975   144 FUNC    GLOBAL DEFAULT   10 jsc_value_function_call

readelf -a wpebuild/build/wpewebkit-2.24.1/lib/libJavaScriptCore.a | grep
jsc_weak_value_new
    54: 00000000    44 OBJECT  LOCAL  DEFAULT   25 _ZZ18jsc_weak_value_newE1
    99: 00000157    94 FUNC    GLOBAL DEFAULT    7 jsc_weak_value_new
readelf -a wpebuild/build/wpewebkit-2.24.1/lib/libWPEWebKit-1.0.so.2.4.2 |
grep jsc_weak_value_new
*<NothinG>*
-------------------------- grep ---------------------------
grep *jsc_value_function_call* -r wpebuild/build/wpewebkit-2.24.1/lib/
Binary file wpebuild/build/wpewebkit-2.24.1/lib/libJavaScriptCore.a matches
Binary file wpebuild/build/wpewebkit-2.24.1/lib/libWPEWebKit-1.0.so.2.4.2
matches

grep *jsc_weak* -r wpebuild/build/wpewebkit-2.24.1/lib/
Binary file wpebuild/build/wpewebkit-2.24.1/lib/libJavaScriptCore.a matches


> > Correct me if I am wrong, technically Javascriptcore is linked to
> > libwpewebkit which is loaded in WebProcess. And extension also loaded
> > in WebProcess ?
>
> Yes, most of the JSC API is for use in your web process extension, not
> the UI process.
>
> Michael
>
>
>
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