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 *
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 * Copyright 2000, 2010 Oracle and/or its affiliates.
 *
 * OpenOffice.org - a multi-platform office productivity suite
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 *
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 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Lesser General Public License version 3 for more details
 * (a copy is included in the LICENSE file that accompanied this code).
 *
 * You should have received a copy of the GNU Lesser General Public License
 * version 3 along with OpenOffice.org.  If not, see
 * <http://www.openoffice.org/license.html>
 * for a copy of the LGPLv3 License.
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// MARKER(update_precomp.py): autogen include statement, do not remove
#include "precompiled_cppu.hxx"

#include "osl/mutex.hxx"
#include "osl/thread.h"

#include "cppu/helper/purpenv/Environment.hxx"
#include "cppu/helper/purpenv/Mapping.hxx"


#ifdef debug
# define LOG_LIFECYCLE_UnsafeBridge
#endif

#ifdef LOG_LIFECYCLE_UnsafeBridge
#  include <iostream>
#  define LOG_LIFECYCLE_UnsafeBridge_emit(x) x

#else
#  define LOG_LIFECYCLE_UnsafeBridge_emit(x)

#endif


class SAL_DLLPRIVATE UnsafeBridge : public cppu::Enterable
{
	osl::Mutex          m_mutex;
	sal_Int32           m_count;
	oslThreadIdentifier m_threadId;

	virtual  ~UnsafeBridge(void);

public:
	explicit UnsafeBridge(void);

	virtual void v_callInto_v(uno_EnvCallee * pCallee, va_list * pParam);
	virtual void v_callOut_v (uno_EnvCallee * pCallee, va_list * pParam);

	virtual void v_enter(void);
	virtual void v_leave(void);

	virtual int  v_isValid(rtl::OUString * pReason);
};

UnsafeBridge::UnsafeBridge(void)
	: m_count   (0),
	  m_threadId(0)
{
	LOG_LIFECYCLE_UnsafeBridge_emit(fprintf(stderr, "LIFE: %s -> %p\n", "UnsafeBridge::UnsafeBridge(uno_Environment * pEnv)", this));
}

UnsafeBridge::~UnsafeBridge(void)
{
	LOG_LIFECYCLE_UnsafeBridge_emit(fprintf(stderr, "LIFE: %s -> %p\n", "UnsafeBridge::~UnsafeBridge(void)", this));

	OSL_ASSERT(m_count >= 0);
}

void UnsafeBridge::v_callInto_v(uno_EnvCallee * pCallee, va_list * pParam)
{
	enter();
	pCallee(pParam);
	leave();
}

void UnsafeBridge::v_callOut_v(uno_EnvCallee * pCallee, va_list * pParam)
{
	OSL_ASSERT(m_count > 0);

	-- m_count;
	pCallee(pParam);
	++ m_count;

	if (!m_threadId)
		m_threadId = osl_getThreadIdentifier(NULL);
}

void UnsafeBridge::v_enter(void)
{
	m_mutex.acquire();

	OSL_ASSERT(m_count >= 0);

	if (m_count == 0)
		m_threadId = osl_getThreadIdentifier(NULL);

	++ m_count;
}
	
void UnsafeBridge::v_leave(void)
{
	OSL_ASSERT(m_count > 0);

	-- m_count;
	if (!m_count)
		m_threadId = 0;


	m_mutex.release();
}

int UnsafeBridge::v_isValid(rtl::OUString * pReason)
{
	int result = 1;

	result = m_count > 0;
	if (!result)
		*pReason = rtl::OUString(RTL_CONSTASCII_USTRINGPARAM("not entered"));

	else
	{
		result = m_threadId == osl_getThreadIdentifier(NULL);

		if (!result)
			*pReason = rtl::OUString(RTL_CONSTASCII_USTRINGPARAM("wrong thread"));
	}

	if (result)
		*pReason = rtl::OUString(RTL_CONSTASCII_USTRINGPARAM("OK"));

	return result;
}

extern "C" void SAL_DLLPUBLIC_EXPORT SAL_CALL uno_initEnvironment(uno_Environment * pEnv)
	SAL_THROW_EXTERN_C()
{
    cppu::helper::purpenv::Environment_initWithEnterable(pEnv, new UnsafeBridge());
}

extern "C" void SAL_DLLPUBLIC_EXPORT SAL_CALL uno_ext_getMapping(uno_Mapping     ** ppMapping,
								   uno_Environment  * pFrom,
								   uno_Environment  * pTo )
{
	cppu::helper::purpenv::createMapping(ppMapping, pFrom, pTo);
}

