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-rw-r--r--cppu/source/AffineBridge/AffineBridge.cxx369
1 files changed, 369 insertions, 0 deletions
diff --git a/cppu/source/AffineBridge/AffineBridge.cxx b/cppu/source/AffineBridge/AffineBridge.cxx
new file mode 100644
index 000000000000..6cfc74320984
--- /dev/null
+++ b/cppu/source/AffineBridge/AffineBridge.cxx
@@ -0,0 +1,369 @@
+/*************************************************************************
+ *
+ * OpenOffice.org - a multi-platform office productivity suite
+ *
+ * $RCSfile: AffineBridge.cxx,v $
+ *
+ * $Revision: 1.2 $
+ *
+ * last change: $Author: kz $ $Date: 2007-05-09 13:36:05 $
+ *
+ * The Contents of this file are made available subject to
+ * the terms of GNU Lesser General Public License Version 2.1.
+ *
+ *
+ * GNU Lesser General Public License Version 2.1
+ * =============================================
+ * Copyright 2005 by Sun Microsystems, Inc.
+ * 901 San Antonio Road, Palo Alto, CA 94303, USA
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License version 2.1, as published by the Free Software Foundation.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ *
+ ************************************************************************/
+
+#include "osl/thread.hxx"
+#include "osl/conditn.hxx"
+#include "osl/mutex.hxx"
+
+#include "cppu/helper/purpenv/Environment.hxx"
+#include "cppu/helper/purpenv/Mapping.hxx"
+
+
+#ifdef debug
+# define LOG_LIFECYCLE_AffineBridge
+#endif
+
+#ifdef LOG_LIFECYCLE_AffineBridge
+# include <iostream>
+# define LOG_LIFECYCLE_AffineBridge_emit(x) x
+
+#else
+# define LOG_LIFECYCLE_AffineBridge_emit(x)
+
+#endif
+
+class InnerThread;
+class OuterThread;
+
+class SAL_DLLPRIVATE AffineBridge : public cppu::Enterable
+{
+public:
+ enum Msg
+ {
+ CB_DONE,
+ CB_FPOINTER
+ };
+
+ Msg m_message;
+ uno_EnvCallee * m_pCallee;
+ va_list m_param;
+
+ osl::Mutex m_innerMutex;
+ oslThreadIdentifier m_innerThreadId;
+ InnerThread * m_pInnerThread;
+ osl::Condition m_innerCondition;
+ sal_Int32 m_enterCount;
+
+ osl::Mutex m_outerMutex;
+ oslThreadIdentifier m_outerThreadId;
+ osl::Condition m_outerCondition;
+ OuterThread * m_pOuterThread;
+
+ explicit AffineBridge(void);
+ virtual ~AffineBridge(void);
+
+ virtual void v_callInto_v(uno_EnvCallee * pCallee, va_list param);
+ virtual void v_callOut_v (uno_EnvCallee * pCallee, va_list param);
+
+ virtual void v_enter(void);
+ virtual void v_leave(void);
+
+ virtual int v_isValid(rtl::OUString * pReason);
+
+ void innerDispatch(void);
+ void outerDispatch(int loop);
+};
+
+class SAL_DLLPRIVATE InnerThread : public osl::Thread
+{
+ virtual void SAL_CALL run(void);
+
+ AffineBridge * m_pAffineBridge;
+
+public:
+ InnerThread(AffineBridge * threadEnvironment)
+ : m_pAffineBridge(threadEnvironment)
+ {
+ create();
+ }
+};
+
+void InnerThread::run(void)
+{
+ m_pAffineBridge->enter();
+ m_pAffineBridge->innerDispatch();
+ m_pAffineBridge->leave();
+}
+
+class SAL_DLLPRIVATE OuterThread : public osl::Thread
+{
+ virtual void SAL_CALL run(void);
+
+ AffineBridge * m_pAffineBridge;
+
+public:
+ OuterThread(AffineBridge * threadEnvironment);
+};
+
+OuterThread::OuterThread(AffineBridge * threadEnvironment)
+ : m_pAffineBridge(threadEnvironment)
+{
+ create();
+}
+
+void OuterThread::run(void)
+{
+ osl::MutexGuard guard(m_pAffineBridge->m_outerMutex);
+
+ m_pAffineBridge->m_outerThreadId = getIdentifier();
+ m_pAffineBridge->outerDispatch(0);
+ m_pAffineBridge->m_outerThreadId = 0;
+
+ m_pAffineBridge->m_pOuterThread = NULL;
+ m_pAffineBridge = NULL;
+}
+
+
+AffineBridge::AffineBridge(void)
+ : m_innerThreadId(0),
+ m_pInnerThread (NULL),
+ m_enterCount (0),
+ m_outerThreadId(0),
+ m_pOuterThread (NULL)
+{
+ LOG_LIFECYCLE_AffineBridge_emit(fprintf(stderr, "LIFE: %s -> %p\n", "AffineBridge::AffineBridge(uno_Environment * pEnv)", this));
+}
+
+AffineBridge::~AffineBridge(void)
+{
+ LOG_LIFECYCLE_AffineBridge_emit(fprintf(stderr, "LIFE: %s -> %p\n", "AffineBridge::~AffineBridge(void)", this));
+
+ if (m_pInnerThread && osl_getThreadIdentifier(NULL) != m_innerThreadId)
+ {
+ m_message = CB_DONE;
+ m_innerCondition.set();
+
+ m_pInnerThread->join();
+ }
+
+ delete m_pInnerThread;
+
+ if (m_pOuterThread)
+ {
+ m_pOuterThread->join();
+ delete m_pOuterThread;
+ }
+}
+
+
+void AffineBridge::outerDispatch(int loop)
+{
+ OSL_ASSERT(m_outerThreadId == osl_getThreadIdentifier(NULL));
+ OSL_ASSERT(m_innerThreadId != m_outerThreadId);
+
+ Msg mm;
+
+ do
+ {
+ // FIXME: created outer thread must not wait
+ // in case of no message
+ // note: no message can happen in case newly created
+ // outer thread acquire outerMutex after a real outer
+ // thread enters outerDispatch!
+ m_outerCondition.wait();
+ m_outerCondition.reset();
+
+ mm = m_message;
+
+ switch(mm)
+ {
+ case CB_DONE:
+ break;
+
+ case CB_FPOINTER:
+ {
+ m_pCallee(m_param);
+
+ m_message = CB_DONE;
+ m_innerCondition.set();
+ break;
+ }
+ default:
+ abort();
+ }
+ }
+ while(mm != CB_DONE && loop);
+}
+
+void AffineBridge::innerDispatch(void)
+{
+ OSL_ASSERT(m_innerThreadId == osl_getThreadIdentifier(NULL));
+ OSL_ASSERT(m_innerThreadId != m_outerThreadId);
+
+ Msg mm;
+
+ do
+ {
+ m_innerCondition.wait();
+ m_innerCondition.reset();
+
+ mm = m_message;
+
+ switch(mm)
+ {
+ case CB_DONE:
+ break;
+
+ case CB_FPOINTER:
+ {
+ m_pCallee(m_param);
+
+ m_message = CB_DONE;
+ m_outerCondition.set();
+ break;
+ }
+ default:
+ abort();
+ }
+ }
+ while(mm != CB_DONE);
+}
+
+void AffineBridge::v_callInto_v(uno_EnvCallee * pCallee, va_list param)
+{
+ osl::MutexGuard guard(m_outerMutex); // only one thread at a time can call into
+
+ if (m_innerThreadId == 0) // no inner thread yet
+ {
+ m_pInnerThread = new InnerThread(this);
+ m_pInnerThread->resume();
+ }
+
+ bool resetId = false;
+ if (!m_outerThreadId)
+ {
+ m_outerThreadId = osl_getThreadIdentifier(NULL);
+ resetId = true;
+ }
+
+ m_message = CB_FPOINTER;
+ m_pCallee = pCallee;
+ m_param = param;
+ m_innerCondition.set();
+
+ outerDispatch(1);
+
+ if (resetId)
+ m_outerThreadId = 0;
+}
+
+void AffineBridge::v_callOut_v(uno_EnvCallee * pCallee, va_list param)
+{
+ OSL_ASSERT(m_innerThreadId);
+
+ osl::MutexGuard guard(m_innerMutex);
+
+ if (m_outerThreadId == 0) // no outer thread yet
+ {
+ osl::MutexGuard guard_m_outerMutex(m_outerMutex);
+
+ if (m_outerThreadId == 0)
+ {
+ if (m_pOuterThread)
+ {
+ m_pOuterThread->join();
+ delete m_pOuterThread;
+ }
+
+ m_pOuterThread = new OuterThread(this);
+ }
+ }
+
+ m_message = CB_FPOINTER;
+ m_pCallee = pCallee;
+ m_param = param;
+ m_outerCondition.set();
+
+ innerDispatch();
+}
+
+void AffineBridge::v_enter(void)
+{
+ m_innerMutex.acquire();
+
+ if (!m_enterCount)
+ m_innerThreadId = osl_getThreadIdentifier(NULL);
+
+ OSL_ASSERT(m_innerThreadId == osl_getThreadIdentifier(NULL));
+
+ ++ m_enterCount;
+}
+
+void AffineBridge::v_leave(void)
+{
+ OSL_ASSERT(m_innerThreadId == osl_getThreadIdentifier(NULL));
+
+ -- m_enterCount;
+ if (!m_enterCount)
+ m_innerThreadId = 0;
+
+ m_innerMutex.release();
+}
+
+int AffineBridge::v_isValid(rtl::OUString * pReason)
+{
+ int result = 1;
+
+ result = m_enterCount > 0;
+ if (!result)
+ *pReason = rtl::OUString(RTL_CONSTASCII_USTRINGPARAM("not entered"));
+
+ else
+ {
+ result = m_innerThreadId == 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 AffineBridge());
+}
+
+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);
+}
+
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