зеркало из https://github.com/mozilla/pjs.git
88 строки
3.0 KiB
C++
88 строки
3.0 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*-
|
|
*
|
|
* The contents of this file are subject to the Netscape Public License
|
|
* Version 1.0 (the "NPL"); you may not use this file except in
|
|
* compliance with the NPL. You may obtain a copy of the NPL at
|
|
* http://www.mozilla.org/NPL/
|
|
*
|
|
* Software distributed under the NPL is distributed on an "AS IS" basis,
|
|
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
|
|
* for the specific language governing rights and limitations under the
|
|
* NPL.
|
|
*
|
|
* The Initial Developer of this code under the NPL is Netscape
|
|
* Communications Corporation. Portions created by Netscape are
|
|
* Copyright (C) 1998 Netscape Communications Corporation. All Rights
|
|
* Reserved.
|
|
*/
|
|
#ifndef _NATIVE_METHOD_DISPATCHER_H_
|
|
#define _NATIVE_METHOD_DISPATCHER_H_
|
|
|
|
#include "prlink.h"
|
|
|
|
#include "ClassCentral.h"
|
|
#include "ClassFileSummary.h"
|
|
#include "FieldOrMethod.h"
|
|
#include "Vector.h"
|
|
#include "NameMangler.h"
|
|
|
|
/* A quick note on "internal-style" native methods. Other than the JRI
|
|
* and JNI, the VM also supports a third kind of native-method dispatch.
|
|
* In this approach, native method names are mangled exactly as in the JNI,
|
|
* but with a Netscape_ prefixed to the JNI-style mangled name. The
|
|
* arguments to the native methods are C++ counterparts to the Java Objects
|
|
* used in the VM. The javah program will generate headers and stubs for
|
|
* these functions. Fields are accessed directly, via the C++ structures.
|
|
* Methods (for now) are called via the reflection API.
|
|
*/
|
|
|
|
|
|
class NativeMethodDispatcher {
|
|
public:
|
|
static void staticInit();
|
|
|
|
/* Loads a shared library whose simple name (without a system-specific
|
|
* extension) is given by simpleLibName. Returns a handle to the library
|
|
* on success, NULL on failure.
|
|
*/
|
|
static PRLibrary *loadLibrary(const char *simpleLibName);
|
|
|
|
/* Resolve the native-method whose information is given by m. This method
|
|
* mangles the methodname, and returns the address of the method to call.
|
|
* Platform-specific directives (such as the __stdcall suffix on windows)
|
|
* are added by this method; the name should not contain those.
|
|
*/
|
|
static addr resolve(Method &m);
|
|
|
|
/* Register a native name mangler */
|
|
static void registerMangler(NameMangler &mangler) {
|
|
manglers.append(&mangler);
|
|
}
|
|
|
|
|
|
private:
|
|
|
|
/* Array of name-mangler classes, each of which implements a particular
|
|
* name-mangling scheme
|
|
*/
|
|
static Vector<NameMangler *> manglers;
|
|
|
|
/* Given a mangled function name, construct a platform and compiler-
|
|
* specific symbol that can be searched for in the set of loaded libraries.
|
|
* name is the mangled function name. method contains run-time information
|
|
* about the method. callType is the native calling convention to use.
|
|
* mangler is a class that mangles the function name and adds additional
|
|
* arguments, if neccessary.
|
|
*/
|
|
static bool buildFunName(char *name, Int32 nameMax,
|
|
Method &method,
|
|
NativeCallingConvention callType,
|
|
NameMangler &mangler);
|
|
|
|
};
|
|
|
|
#endif /* _NATIVE_METHOD_DISPATCHER_H_ */
|
|
|
|
|
|
|