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/*
*
* Copyright 2005 The Apache Software Foundation or its licensors, as applicable.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/* $Rev$ $Date: 2005/12/22 11:33:21 $ */
#ifndef tuscany_sca_core_scaruntime_h
#define tuscany_sca_core_scaruntime_h
#include "osoa/sca/export.h"
#include "osoa/sca/ComponentContext.h"
using osoa::sca::ComponentContext;
#include "tuscany/sca/core/ServiceWrapper.h"
#include "tuscany/sca/model/System.h"
using namespace tuscany::sca::model;
#if defined(WIN32) || defined (_WINDOWS)
#include <windows.h>
#else
#include <pthread.h>
#endif
#include <stack>
#include <string>
#include <map>
using namespace std;
namespace tuscany
{
namespace sca
{
/**
* A singleton which represents the executing SCA runtime.
*/
class SCARuntime {
public:
/**
* Get the single instance.
* @return The single instance of the runtime.
*/
SCA_API static SCARuntime* getInstance();
/**
* Set the current component for the current thread.
* @param component The current component.
*/
SCA_API void setCurrentComponent(Component* component);
/**
* Remove the current component from this thread, and return
* to the previous component (if there was one).
* @return The previous component.
*/
SCA_API Component* unsetCurrentComponent();
/**
* Get a pointer to the configured SCA system which this
* SCA runtime represents.
* The rest of the SCA configuration can be navigated from
* the System.
* @return The configured SCA system.
*/
System* getSystem();
/**
* The directory in which the Tuscany runtime has been installed.
*/
const string& getInstallRoot() {return SCARoot;}
/**
* Return the current component for this thread.
* @return The current component for this thread.
*/
Component* getCurrentComponent();
/**
* Get the current module. The current module will either
* be the module in which the current component for this thread
* is defined, or it will be the default module if there is no current
* component. There will not be a current component if a client of
* the SCA runtime is making a call into the SCA runtime.
*/
Module* getCurrentModule();
private:
/**
* Default constructor is private to prevent more than one instance.
*/
SCARuntime();
/**
* Load the SCA configuration from the scdl files (sca.module,
* *.fragment, etc).
* This will create the runtime model from which the SCA runtime
* will operate.
* @param configurationRoot The path to the configuration of the
* SCA runtime. Under this root will be the subsystems and modules
* directories.
*/
void load(const char* configurationRoot);
/**
* The single instance of this class.
*/
static SCARuntime* instance;
/**
* Pointer to the top of the runtime model.
*/
System* system;
/**
* The installed path of the Tuscany runtime.
*/
string SCARoot;
/**
* Get the default module set for this runtime.
* @return The default module.
*/
Module* getDefaultModule() {return defaultModule;}
/**
* The default module set for this runtime.
*/
Module* defaultModule;
typedef stack<Component*> COMPONENT_STACK;
#if defined(WIN32) || defined (_WINDOWS)
typedef map<DWORD, COMPONENT_STACK> COMPONENTS_MAP;
#else
typedef map<pthread_t, COMPONENT_STACK> COMPONENTS_MAP;
#endif
/**
* A map of threads to components.
*/
COMPONENTS_MAP components;
};
} // End namespace sca
} // End namespace tuscany
#endif // tuscany_sca_core_scaruntime_h
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