// ==========================================================================
// This software is subject to the provisions of the Zope Public License,
// Version 2.0 (ZPL).  A copy of the ZPL should accompany this distribution.
// THIS SOFTWARE IS PROVIDED "AS IS" AND ANY AND ALL EXPRESS OR IMPLIED
// WARRANTIES ARE DISCLAIMED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
// WARRANTIES OF TITLE, MERCHANTABILITY, AGAINST INFRINGEMENT, AND FITNESS
// FOR A PARTICULAR PURPOSE.
// ==========================================================================

using System;
using System.Collections;
using Python.Runtime;

namespace Python.Test {

    //========================================================================
    // Supports CLR threading / reentrancy unit tests.
    //========================================================================

    public class ThreadTest {

	private static PyObject module;

	private static string testmod = 
	"import CLR\n" +
	"from CLR.Python.Test import ThreadTest\n" + 
	"\n" +
	"def echostring(value):\n" + 
	"    return value\n" + 
	"\n" + 
	"def echostring2(value):\n" + 
	"    return ThreadTest.CallEchoString(value)\n" + 
	"\n";


	// This method calls back into the CPython runtime - tests
	// call this from Python to check that we don't hang on 
	// nested transitions from managed to Python code and back.

	public static string CallEchoString(string arg) {
	    IntPtr gs = PythonEngine.AcquireLock();
	    if (module == null) {
		module = PythonEngine.ModuleFromString("tt", testmod);
	    }
	    PyObject func = module.GetAttr("echostring");
	    PyString parg = new PyString(arg);
	    PyObject temp = func.Invoke(parg);
	    string result = (string)temp.AsManagedObject(typeof(String));
	    func.Dispose();
	    parg.Dispose();
	    temp.Dispose();
	    PythonEngine.ReleaseLock(gs);
	    return result;
	}

	public static string CallEchoString2(string arg) {
	    IntPtr gs = PythonEngine.AcquireLock();
	    if (module == null) {
		module = PythonEngine.ModuleFromString("tt", testmod);
	    }

	    PyObject func = module.GetAttr("echostring2");
	    PyString parg = new PyString(arg);
	    PyObject temp = func.Invoke(parg);
	    string result = (string)temp.AsManagedObject(typeof(String));
	    func.Dispose();
	    parg.Dispose();
	    temp.Dispose();
	    PythonEngine.ReleaseLock(gs);
	    return result;
	}

	
    }


}