Java NativeLibrary类代码示例

import org.bridj.NativeLibrary; //导入依赖的package包/类
@SuppressWarnings({ "deprecation", "unchecked", "rawtypes" })
public MemoryOperators(NativeLibrary library) {
    for (Symbol sym : library.getSymbols()) {
        try {
            MemberRef parsedRef = sym.getParsedRef();
            IdentLike n = parsedRef.getMemberName();

            if (SpecialName.New.equals(n)) {
                newFct = pointerToAddress(sym.getAddress()).asDynamicFunction(null, Pointer.class, SizeT.class);
            } else if (SpecialName.NewArray.equals(n)) {
                newFct = pointerToAddress(sym.getAddress()).asDynamicFunction(null, Pointer.class, SizeT.class);
            } else if (SpecialName.Delete.equals(n)) {
                newFct = pointerToAddress(sym.getAddress()).asDynamicFunction(null, Void.class, Pointer.class);
            } else if (SpecialName.DeleteArray.equals(n)) {
                newFct = pointerToAddress(sym.getAddress()).asDynamicFunction(null, Void.class, Pointer.class);
            }

        } catch (Exception ex) {
        }
    }
}
 

import org.bridj.NativeLibrary; //导入依赖的package包/类
Pointer.Releaser newCPPReleaser(final Type type, final Class<?> typeClass, NativeLibrary lib) throws FileNotFoundException {
    Pointer.Releaser releaser = null;
    //final Class<?> typeClass = Utils.getClass(type);
    //NativeLibrary lib = BridJ.getNativeLibrary(typeClass);
    if (lib != null && BridJ.enableDestructors) {
        final CPPDestructor<?> destructor = getDestructor(typeClass, type, lib);
        if (destructor != null) {
            releaser = new Pointer.Releaser() { //@Override 
                public void release(Pointer<?> p) {
                    if (BridJ.debug) {
                        BridJ.info("Destructing instance of C++ type " + Utils.toString(type) + " (address = " + p + ", destructor = " + getPointer(destructor) + ")");
                    }

                    //System.out.println("Destructing instance of C++ type " + type + "...");
                    long peer = p.getPeer();
                    destructor.destroy(peer);
                    BridJ.setJavaObjectFromNativePeer(peer, null);
                }
            };
        }
    }
    return releaser;
}
 

import org.bridj.NativeLibrary; //导入依赖的package包/类
public void testLLVMSymbols() {
	NativeLibrary lib = null;
	try {
		lib = BridJ.getNativeLibrary("LLVM-" + LLVM_VERSION);
	} catch (IOException e) {
           fail(e.getMessage());
       }

	Collection<Symbol> symbols = lib.getSymbols();
	Set<Symbol> llvmSymbols = new HashSet<Symbol>(symbols.size());

	for (Symbol sym : symbols) {
		if (sym.getName().startsWith("LLVM")) {
			llvmSymbols.add(sym);
		}
	}

	assertTrue(llvmSymbols.size() > 10);
}
 

import org.bridj.NativeLibrary; //导入依赖的package包/类
@Override
protected NativeLibrary getNativeLibrary(Class<?> type) throws IOException {
    Library libAnn = type.getAnnotation(Library.class);
    if (libAnn != null) {
        try {
            String name = libAnn.value();
            return BridJ.getNativeLibrary(name, new File("/System/Library/Frameworks/" + name + ".framework/" + name));
        } catch (FileNotFoundException ex) {
        }
    }

    return super.getNativeLibrary(type);
}
 

import org.bridj.NativeLibrary; //导入依赖的package包/类
@Override
protected void registerNativeMethod(
        Class<?> type,
        NativeLibrary typeLibrary,
        Method method,
        NativeLibrary methodLibrary,
        Builder builder,
        MethodCallInfoBuilder methodCallInfoBuilder) throws FileNotFoundException {

    if (method == null) {
        return;
    }

    if (!ObjCObject.class.isAssignableFrom(type) || ObjCBlock.class.isAssignableFrom(type)) {
        super.registerNativeMethod(type, typeLibrary, method, methodLibrary, builder, methodCallInfoBuilder);
        return;
    }

    try {
        MethodCallInfo mci = methodCallInfoBuilder.apply(method);
        boolean isStatic = Modifier.isStatic(method.getModifiers());

        if (isStatic) {
            Pointer<ObjCClass> pObjcClass = getObjCClass((Class) type).as(ObjCClass.class);
            ObjCClass objcClass = pObjcClass.get();
            mci.setNativeClass(pObjcClass.getPeer());
        }

        mci.setSymbolName(getSelector(method));
        builder.addObjCMethod(mci);
    } catch (ClassNotFoundException ex) {
        throw new RuntimeException("Failed to register method " + method + " : " + ex, ex);
    }
}
 

import org.bridj.NativeLibrary; //导入依赖的package包/类
public synchronized MemoryOperators getMemoryOperators() {
    if (memoryOperators == null) {
        try {
            NativeLibrary libStdCpp = BridJ.getNativeLibrary("stdc++");
            memoryOperators = new MemoryOperators(libStdCpp);
        } catch (Exception ex) {
            BridJ.error(null, ex);
        }
    }
    return memoryOperators;
}
 

import org.bridj.NativeLibrary; //导入依赖的package包/类
public int getPositionInVirtualTable(Pointer<Pointer<?>> pVirtualTable, Method method, NativeLibrary library) {
    //Pointer<?> typeInfo = pVirtualTable.get(1);
    int methodsOffset = 0;//library.isMSVC() ? 0 : -2;///2;
    String className = getClassName(method.getDeclaringClass());
    for (int iVirtual = 0;; iVirtual++) {
        Pointer<?> pMethod = pVirtualTable.get(methodsOffset + iVirtual);
        String virtualMethodName = pMethod == null ? null : library.getSymbolName(pMethod.getPeer());
        //System.out.println("#\n# At index " + methodsOffset + " + " + iVirtual + " of vptr for class " + className + ", found symbol " + Long.toHexString(pMethod.getPeer()) + " = '" + virtualMethodName + "'\n#");
        if (virtualMethodName == null) {
            if (debug) {
                info("\tVtable(" + className + ")[" + iVirtual + "] = null");
            }
        }
        if (pMethod == null) {
            return -1;
        } else if (virtualMethodName == null) {
            continue;
        }
        try {
            MemberRef mr = library.parseSymbol(virtualMethodName);
            if (debug) {
                info("\tVtable(" + className + ")[" + iVirtual + "] = " + virtualMethodName + " = " + mr);
            }
            if (mr != null && mr.matchesSignature(method)) {
                return iVirtual;
            } else if (library.isMSVC() && !mr.matchesEnclosingType(method)) {
                break; // no NULL terminator in MSVC++ vtables, so we have to guess when we've reached the end
            }
        } catch (Demangler.DemanglingException ex) {
            BridJ.warning("Failed to demangle '" + virtualMethodName + "' during inspection of virtual table for '" + method.toGenericString() + "' : " + ex);
        }

    }
    return -1;
}
 

import org.bridj.NativeLibrary; //导入依赖的package包/类
@SuppressWarnings("deprecation")
protected boolean installRegularVTablePtr(Type type, NativeLibrary library, Pointer<?> peer) {
    long vtablePtr = getVirtualTable(type, library);
    if (vtablePtr != 0) {
        if (BridJ.debug) {
            BridJ.info("Installing regular vtable pointer " + Pointer.pointerToAddress(vtablePtr) + " to instance at " + peer + " (type = " + Utils.toString(type) + ")");
        }
        peer.setSizeT(vtablePtr);
        return true;
    }
    return false;
}
 

import org.bridj.NativeLibrary; //导入依赖的package包/类
@SuppressWarnings("rawtypes")
protected VTable synthetizeVirtualTable(Type type, Pointer<Pointer> parentVTablePtr, List<VirtMeth> methods, NativeLibrary library) {
    int nMethods = methods.size();
    //Pointer<Pointer> parentVTablePtr = pointerToAddress(getVirtualTable(Utils.getParent(type), library), Pointer.class);
    VTable vtable = new VTable();
    vtable.ptr = allocatePointers(nMethods + 2).next(2); // leave two null pointers at index -2 and -1, to say there's no runtime type information available.

    Class<?> c = Utils.getClass(type);
    for (int iMethod = 0; iMethod < nMethods; iMethod++) {
        VirtMeth vm = methods.get(iMethod);
        Pointer<?> pMethod;
        if (Modifier.isNative(vm.implementation.getModifiers())) {
            pMethod = parentVTablePtr == null ? null : parentVTablePtr.get(iMethod);
        } else {
            try {
                MethodCallInfo mci = new MethodCallInfo(vm.implementation, vm.definition);
                mci.setDeclaringClass(vm.implementation.getDeclaringClass());
                pMethod = createCToJavaCallback(mci, c);
                vtable.callbacks.put(vm.implementation, pMethod);
            } catch (Throwable th) {
                BridJ.error("Failed to register overridden method " + vm.implementation + " for type " + type + " (original method = " + vm.definition + ")", th);
                pMethod = null;
            }
        }
        vtable.ptr.set(iMethod, (Pointer) pMethod);
    }
    return vtable;
}
 

import org.bridj.NativeLibrary; //导入依赖的package包/类
@Override
  protected void onCreate(Bundle savedInstanceState) {
      super.onCreate(savedInstanceState);
      helloLog(pointerToCString("Hello, World!"));
      try {
	NativeLibrary lib = BridJ.getNativeLibrary("example");
	for (Symbol s : lib.getSymbols()) {
		String p = s.getParsedRef() + "";
		System.out.println(p);
	}
} catch (IOException e) {
	throw new RuntimeException("BridJ loading failed?", e);
}
      setContentView(R.layout.activity_main);
  }
 

import org.bridj.NativeLibrary; //导入依赖的package包/类
@Override
    protected void registerNativeMethod(Class<?> type, NativeLibrary typeLibrary, Method method, NativeLibrary methodLibrary, Builder builder, MethodCallInfoBuilder methodCallInfoBuilder) throws FileNotFoundException {

        int modifiers = method.getModifiers();
        boolean isCPPClass = CPPObject.class.isAssignableFrom(method.getDeclaringClass());

//		Annotation[][] anns = method.getParameterAnnotations();
        if (!isCPPClass) {
            super.registerNativeMethod(type, typeLibrary, method, methodLibrary, builder, methodCallInfoBuilder);
            return;
        }

        MethodCallInfo mci = methodCallInfoBuilder.apply(method);

        Virtual va = method.getAnnotation(Virtual.class);
        if (va == null) {
            Symbol symbol = methodLibrary.getSymbol(method);
            mci.setForwardedPointer(symbol == null ? 0 : symbol.getAddress());
            if (mci.getForwardedPointer() == 0) {
                assert error("Method " + method.toGenericString() + " is not virtual but its address could not be resolved in the library.");
                return;
            }
            if (Modifier.isStatic(modifiers)) {
                builder.addFunction(mci);
                if (debug) {
                    info("Registering " + method + " as function or static C++ method " + symbol.getName());
                }
            } else {
                builder.addFunction(mci);
                if (debug) {
                    info("Registering " + method + " as C++ method " + symbol.getName());
                }
            }
        } else {
            if (Modifier.isStatic(modifiers)) {
                warning("Method " + method.toGenericString() + " is native and maps to a function, but is not static.");
            }

            int theoreticalVirtualIndex = va.value();
            int theoreticalAbsoluteVirtualIndex = theoreticalVirtualIndex < 0 ? - 1 : getAbsoluteVirtualIndex(method, theoreticalVirtualIndex, type);

            int absoluteVirtualIndex;

            Pointer<Pointer<?>> pVirtualTable = isCPPClass && typeLibrary != null ? (Pointer) pointerToAddress(getVirtualTable(type, typeLibrary), Pointer.class) : null;
            if (pVirtualTable == null) {
                if (theoreticalAbsoluteVirtualIndex < 0) {
                    error("Method " + method.toGenericString() + " is virtual but the virtual table of class " + type.getName() + " was not found and the virtual method index is not provided in its @Virtual annotation.");
                    return;
                }
                absoluteVirtualIndex = theoreticalAbsoluteVirtualIndex;
            } else {
                int guessedAbsoluteVirtualIndex = getPositionInVirtualTable(pVirtualTable, method, typeLibrary);
                if (guessedAbsoluteVirtualIndex < 0) {
                    if (theoreticalAbsoluteVirtualIndex < 0) {
                        error("Method " + method.toGenericString() + " is virtual but its position could not be found in the virtual table.");
                        return;
                    } else {
                        absoluteVirtualIndex = theoreticalAbsoluteVirtualIndex;
                    }
                } else {
                    if (theoreticalAbsoluteVirtualIndex >= 0 && guessedAbsoluteVirtualIndex != theoreticalAbsoluteVirtualIndex) {
                        warning("Method " + method.toGenericString() + " has @Virtual annotation indicating virtual index " + theoreticalAbsoluteVirtualIndex + ", but analysis of the actual virtual table rather indicates it has index " + guessedAbsoluteVirtualIndex + " (using the guess)");
                    }
                    absoluteVirtualIndex = guessedAbsoluteVirtualIndex;
                }
            }
            mci.setVirtualIndex(absoluteVirtualIndex);
            if (debug) {
                info("Registering " + method.toGenericString() + " as virtual C++ method with absolute virtual table index = " + absoluteVirtualIndex);
            }
            builder.addVirtualMethod(mci);
        }
    }
 

import org.bridj.NativeLibrary; //导入依赖的package包/类
private String ptrToString(Pointer<?> ptr, NativeLibrary library) {
    return ptr == null ? "null" : Long.toHexString(ptr.getPeer()) + " (" + library.getSymbolName(ptr.getPeer()) + ")";
}
 

import org.bridj.NativeLibrary; //导入依赖的package包/类
protected boolean installSyntheticVTablePtr(Type type, NativeLibrary library, Pointer<?> peer) {
    synchronized (syntheticVirtualTables) {
        VTable vtable = syntheticVirtualTables.get(type);
        if (vtable == null) {
            if (!typesThatDontNeedASyntheticVirtualTable.contains(type)) {
                List<VirtMeth> methods = new ArrayList<VirtMeth>();
                listVirtualMethods(Utils.getClass(type), methods);
                boolean needsASyntheticVirtualTable = false;
                for (VirtMeth method : methods) {
                    if (!Modifier.isNative(method.implementation.getModifiers())) {
                        needsASyntheticVirtualTable = true;
                        break;
                    }
                }
                if (needsASyntheticVirtualTable) {
                    Type parentType = Utils.getParent(type);
                    @SuppressWarnings("rawtypes")
                    Pointer<Pointer> parentVTablePtr = null;
                    if (CPPObject.class.isAssignableFrom(Utils.getClass(parentType))) {
                        parentVTablePtr = peer.getPointer(Pointer.class);
                        if (BridJ.debug) {
                            BridJ.info("Found parent virtual table pointer = " + ptrToString(parentVTablePtr, library));
                            /*Pointer<Pointer> expectedParentVTablePtr = pointerToAddress(getVirtualTable(parentType, library), Pointer.class);
                             if (expectedParentVTablePtr != null && !Utils.eq(parentVTablePtr, expectedParentVTablePtr))
                             BridJ.warning("Weird parent virtual table pointer : expected " + ptrToString(expectedParentVTablePtr, library) + ", got " + ptrToString(parentVTablePtr, library));
                             */

                        }
                        //parentVTablePtr = pointerToAddress(getVirtualTable(parentType, library), Pointer.class);
                    }
                    syntheticVirtualTables.put(type, vtable = synthetizeVirtualTable(type, parentVTablePtr, methods, library));
                } else {
                    typesThatDontNeedASyntheticVirtualTable.add(type);
                }
            }
        }
        if (vtable != null) {
            if (BridJ.debug) {
                BridJ.info("Installing synthetic vtable pointer " + vtable.ptr + " to instance at " + peer + " (type = " + Utils.toString(type) + ", " + vtable.callbacks.size() + " callbacks)");
            }
            peer.setPointer(vtable.ptr);
            return vtable.ptr != null;
        } else {
            return false;
        }
    }
}
 

import org.bridj.NativeLibrary; //导入依赖的package包/类
protected <T extends CPPObject> Pointer<T> newCPPInstance(T instance, final Type type, int constructorId, Object... args) {
    Pointer<T> peer = null;
    try {
        final Class<T> typeClass = Utils.getClass(type);
        NativeLibrary lib = BridJ.getNativeLibrary(typeClass);

        if (BridJ.debug) {
            info("Creating C++ instance of type " + type + " with args " + Arrays.asList(args));
        }
        Pointer.Releaser releaser = newCPPReleaser(type, typeClass, lib);

        long size = sizeOf(type, null);
        peer = (Pointer) Pointer.allocateBytes(PointerIO.getInstance(type), size, releaser).as(type);

        DynamicFunction<?> constructor = constructorId == SKIP_CONSTRUCTOR ? null : getConstructor(typeClass, type, lib, constructorId);

        if (lib != null && CPPObject.class.isAssignableFrom(typeClass)) {
            installRegularVTablePtr(type, lib, peer);
        } else {
            // TODO ObjCObject : call alloc on class type !!
        }

        // Calling the constructor with the non-template parameters :
        if (constructor != null) {
            Object[] consThisArgs = new Object[1 + args.length];
            consThisArgs[0] = peer;
            System.arraycopy(args, 0, consThisArgs, 1, args.length);

            constructor.apply(consThisArgs);
        }

        // Install synthetic virtual table and associate the Java instance to the corresponding native pointer : 
        if (CPPObject.class.isAssignableFrom(typeClass)) {
            if (installSyntheticVTablePtr(type, lib, peer)) {
                BridJ.setJavaObjectFromNativePeer(peer.getPeer(), instance);
            }
        } else {
            // TODO ObjCObject : call alloc on class type !!
        }
        return peer;
    } catch (Exception ex) {
        ex.printStackTrace();
        if (peer != null) {
            peer.release();
        }
        throw new RuntimeException("Failed to allocate new instance of type " + type, ex);
    }
}
 

import org.bridj.NativeLibrary; //导入依赖的package包/类
public VC9Demangler(NativeLibrary library, String str) {
    super(library, str);
}