jasonsantos / luajava Goto Github PK

LuaJavaAPI:131

    if(Modifier.isPublic(method.getModifiers()))
    {
      method.setAccessible(true);
    }

isn't it should be if(!Modifier.isPublic(method.getModifiers())) ??

how to pass a byte[] parameter when call java function from lua

How can I update LuaJava for Lua 5.3.4 and any other future releases? I found this repository with 5.3.1, however I would like to know if there is a simple way to update to new versions. There aren't much differences between 5.3.1-5.3.4 but that could still be useful, when they release 5.4 for example.

There is a synchronized block in LuaObject.finalize() which will leads to a dead lock when gc thread wants to finalize this luaObject and other paused thread is in another synchronized block with this luaObject.

Calling luajava.new(...) produce the following error on Android ART:
A/art: art/runtime/java_vm_ext.cc:410] JNI DETECTED ERROR IN APPLICATION: can't call static int org.keplerproject.luajava.LuaJavaAPI.javaNew(int, java.lang.Class) with class java.lang.Class<java.lang.Class> A/art: art/runtime/java_vm_ext.cc:410] in call to CallStaticIntMethod

After some code review, I figured out the problem.
In luajava.c, line 1377:
ret = ( *javaEnv )->CallStaticIntMethod( javaEnv , clazz , method , (jint)stateIndex , classInstance );
"clazz" is not the object we want here. It should be:
ret = ( *javaEnv )->CallStaticIntMethod( javaEnv , luajava_api_class , method , (jint)stateIndex , classInstance );

Moreover, I think, line 1371:
if ( clazz == NULL || method == NULL )
should be:
if ( luajava_api_class == NULL || method == NULL )

Nir.

Simple test:

local System = luajava.bindClass 'java.lang.System'
print(System:currentTimeMillis());
print("starting coroutine");

local status, info
local printer = coroutine.create(function()
    coroutine.yield(tostring(System))
    local f = System.currentTimeMillis
    coroutine.yield(tostring(f))
    coroutine.yield( f(System) )
  end)
repeat
  status, info = coroutine.resume(printer)
  print("co:", status, info)
until not status
print("co: done")

results in:

execute
1592982670150
starting coroutine
co:	true	userdata: 0x7f85e802d998
co:	true	function: 0x7f85e802e890
co:	true	userdata: 0x7f85e802d998
co:	true	nil
co:	false	cannot resume dead coroutine
co: done

Any explanation?

It seems that luajava.createProxy() does not create the appropriate object.hashCode() method - or it is wrong. Either way, calling hashCode() in a Dalvik VM was resulting in an NPE:

java.lang.NullPointerException: null result when primitive expected at $Proxy2.hashCode(Native Method)

This can be worked around by implementing hashCode() function in the table that you pass to createProxy.

edti: same is with the case of equals()

Is this by design?

like the title.

It seems like the Makefile is not longer able to work on OSX 10.7.5.

I keep getting issues along the lines of :

In file included from src/c/luajava.c:39:
src/c/luajava.h:2:17: error: jni.h: No such file or directory

It seems that in the switch from Apple to Oracle, things have been moved.

The keplerprojects website is down and an updated documentation for Luajava would be very useful.

Thank you in advance!