Adding upstream version 4:7.4.7.upstream/4%7.4.7upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 270 insertions, 0 deletions

diff --git a/sal/osl/unx/conditn.cxx b/sal/osl/unx/conditn.cxx
new file mode 100644
index 000000000..602240922
--- /dev/null
+++ b/sal/osl/unx/conditn.cxx
@@ -0,0 +1,270 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you 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 .
+ */
+
+#include <sal/config.h>
+
+#include <assert.h>
+
+#include "system.hxx"
+#include "unixerrnostring.hxx"
+#include <sal/log.hxx>
+#include <sal/types.h>
+
+#include <osl/conditn.h>
+#include <osl/time.h>
+
+namespace {
+
+struct oslConditionImpl
+{
+    pthread_cond_t  m_Condition;
+    pthread_mutex_t m_Lock;
+    bool            m_State;
+};
+
+}
+
+oslCondition SAL_CALL osl_createCondition()
+{
+    oslConditionImpl* pCond;
+    int nRet=0;
+
+    pCond = static_cast<oslConditionImpl*>(malloc(sizeof(oslConditionImpl)));
+
+    if ( pCond == nullptr )
+    {
+        return nullptr;
+    }
+
+    pCond->m_State = false;
+
+    /* init condition variable with default attr. (PTHREAD_PROCESS_PRIVAT) */
+    nRet =  pthread_cond_init(&pCond->m_Condition, PTHREAD_CONDATTR_DEFAULT);
+    if ( nRet != 0 )
+    {
+        SAL_WARN( "sal.osl.condition", "pthread_cond_init failed: " << UnixErrnoString(nRet) );
+
+        free(pCond);
+        return nullptr;
+    }
+
+    nRet = pthread_mutex_init(&pCond->m_Lock, PTHREAD_MUTEXATTR_DEFAULT);
+    if ( nRet != 0 )
+    {
+        SAL_WARN( "sal.osl.condition", "pthread_mutex_init failed: " << UnixErrnoString(nRet) );
+
+        nRet = pthread_cond_destroy(&pCond->m_Condition);
+        SAL_WARN_IF( nRet != 0, "sal.osl.condition", "pthread_cond_destroy failed: " << UnixErrnoString(nRet) );
+
+        free(pCond);
+        pCond = nullptr;
+    }
+
+    SAL_INFO( "sal.osl.condition", "osl_createCondition(): " << pCond );
+
+    return static_cast<oslCondition>(pCond);
+}
+
+void SAL_CALL osl_destroyCondition(oslCondition Condition)
+{
+    oslConditionImpl* pCond;
+
+    pCond = static_cast<oslConditionImpl*>(Condition);
+
+    SAL_INFO( "sal.osl.condition", "osl_destroyCondition(" << pCond << ")" );
+
+    if ( pCond )
+    {
+        int nRet = pthread_cond_destroy(&pCond->m_Condition);
+        SAL_WARN_IF( nRet != 0, "sal.osl.condition", "pthread_cond_destroy failed: " << UnixErrnoString(nRet) );
+        nRet = pthread_mutex_destroy(&pCond->m_Lock);
+        SAL_WARN_IF( nRet != 0, "sal.osl.condition", "pthread_mutex_destroy failed: " << UnixErrnoString(nRet) );
+
+        free(Condition);
+    }
+}
+
+sal_Bool SAL_CALL osl_setCondition(oslCondition Condition)
+{
+   oslConditionImpl* pCond;
+   int nRet=0;
+
+   assert(Condition);
+   pCond = static_cast<oslConditionImpl*>(Condition);
+
+   nRet = pthread_mutex_lock(&pCond->m_Lock);
+   if ( nRet != 0 )
+   {
+       SAL_WARN( "sal.osl.condition", "osl_setCondition(" << pCond << "): pthread_mutex_lock failed: " << UnixErrnoString(nRet) );
+       return false;
+   }
+
+   pCond->m_State = true;
+   nRet = pthread_cond_broadcast(&pCond->m_Condition);
+   if ( nRet != 0 )
+   {
+       SAL_WARN( "sal.osl.condition", "osl_setCondition(" << pCond << "): pthread_cond_broadcast failed: " << UnixErrnoString(nRet) );
+       // try to unlock the mutex
+       pthread_mutex_unlock(&pCond->m_Lock);
+       return false;
+   }
+
+   nRet = pthread_mutex_unlock(&pCond->m_Lock);
+   if ( nRet != 0 )
+   {
+       SAL_WARN( "sal.osl.condition", "osl_setCondition(" << pCond << "): pthread_mutex_unlock failed: " << UnixErrnoString(nRet) );
+       return false;
+   }
+
+   SAL_INFO( "sal.osl.condition", "osl_setCondition(" << pCond << ")" );
+
+   return true;
+
+}
+
+sal_Bool SAL_CALL osl_resetCondition(oslCondition Condition)
+{
+    oslConditionImpl* pCond;
+    int nRet=0;
+
+    assert(Condition);
+
+    pCond = static_cast<oslConditionImpl*>(Condition);
+
+    nRet = pthread_mutex_lock(&pCond->m_Lock);
+    if ( nRet != 0 )
+    {
+        SAL_WARN( "sal.osl.condition", "osl_resetCondition(" << pCond << "): pthread_mutex_lock failed: " << UnixErrnoString(nRet) );
+        return false;
+    }
+
+    pCond->m_State = false;
+
+    nRet = pthread_mutex_unlock(&pCond->m_Lock);
+    if ( nRet != 0 )
+    {
+        SAL_WARN( "sal.osl.condition", "osl_resetCondition(" << pCond << "): pthread_mutex_unlock failed: " << UnixErrnoString(nRet) );
+        return false;
+    }
+
+    SAL_INFO( "sal.osl.condition", "osl_resetCondition(" << pCond << ")" );
+
+    return true;
+}
+
+oslConditionResult SAL_CALL osl_waitCondition(oslCondition Condition, const TimeValue* pTimeout)
+{
+    oslConditionImpl* pCond;
+    int nRet=0;
+
+    assert(Condition);
+    pCond = static_cast<oslConditionImpl*>(Condition);
+
+    SAL_INFO( "sal.osl.condition", "osl_waitCondition(" << pCond << ")" );
+
+    nRet = pthread_mutex_lock(&pCond->m_Lock);
+    if ( nRet != 0 )
+    {
+        SAL_WARN( "sal.osl.condition", "osl_waitCondition(" << pCond << "): pthread_mutex_lock failed: " << UnixErrnoString(nRet) );
+        return osl_cond_result_error;
+    }
+
+    if ( pTimeout )
+    {
+        if ( ! pCond->m_State )
+        {
+            struct timeval      tp;
+            struct timespec     to;
+
+            gettimeofday(&tp, nullptr);
+
+            SET_TIMESPEC( to, tp.tv_sec + pTimeout->Seconds,
+                              tp.tv_usec * 1000 + pTimeout->Nanosec );
+
+            /* spurious wake up prevention */
+            do
+            {
+                const int ret = pthread_cond_timedwait(&pCond->m_Condition, &pCond->m_Lock, &to);
+                if ( ret != 0 )
+                {
+                    if ( ret == ETIME || ret == ETIMEDOUT )
+                    {
+                        nRet = pthread_mutex_unlock(&pCond->m_Lock);
+                        SAL_WARN_IF( nRet != 0, "sal.osl.condition", "osl_waitCondition(" << pCond << "): pthread_mutex_unlock failed: " << UnixErrnoString(nRet) );
+
+                        return osl_cond_result_timeout;
+                    }
+                    if ( ret != EINTR )
+                    {
+                        nRet = pthread_mutex_unlock(&pCond->m_Lock);
+                        SAL_WARN_IF( nRet != 0, "sal.osl.condition", "osl_waitCondition(" << pCond << "): pthread_mutex_unlock failed: " << UnixErrnoString(nRet) );
+                        return osl_cond_result_error;
+                    }
+                }
+            }
+            while ( !pCond->m_State );
+        }
+    }
+    else
+    {
+        while ( !pCond->m_State )
+        {
+            nRet = pthread_cond_wait(&pCond->m_Condition, &pCond->m_Lock);
+            if ( nRet != 0 )
+            {
+                SAL_WARN( "sal.osl.condition", "osl_waitCondition(" << pCond << "): pthread_cond_wait failed: " << UnixErrnoString(nRet) );
+                nRet = pthread_mutex_unlock(&pCond->m_Lock);
+                SAL_WARN_IF( nRet != 0, "sal.osl.condition", "osl_waitCondition(" << pCond << "): pthread_mutex_unlock failed: " << UnixErrnoString(nRet) );
+
+                return osl_cond_result_error;
+            }
+        }
+    }
+
+    nRet = pthread_mutex_unlock(&pCond->m_Lock);
+    SAL_WARN_IF( nRet != 0, "sal.osl.condition", "osl_waitCondition(" << pCond << "): pthread_mutex_unlock failed: " << UnixErrnoString(nRet) );
+
+    SAL_INFO( "sal.osl.condition", "osl_waitCondition(" << pCond << "): OK" );
+
+    return osl_cond_result_ok;
+}
+
+sal_Bool SAL_CALL osl_checkCondition(oslCondition Condition)
+{
+    bool State;
+    oslConditionImpl* pCond;
+    int nRet=0;
+
+    assert(Condition);
+    pCond = static_cast<oslConditionImpl*>(Condition);
+
+    nRet = pthread_mutex_lock(&pCond->m_Lock);
+    SAL_WARN_IF( nRet != 0, "sal.osl.condition", "osl_checkCondition(" << pCond << "): pthread_mutex_lock failed: " << UnixErrnoString(nRet) );
+
+    State = pCond->m_State;
+
+    nRet = pthread_mutex_unlock(&pCond->m_Lock);
+    SAL_WARN_IF( nRet != 0, "sal.osl.condition", "osl_checkCondition(" << pCond << "): pthread_mutex_unlock failed: " << UnixErrnoString(nRet) );
+
+    SAL_INFO( "sal.osl.condition", "osl_checkCondition(" << pCond << "): " << (State ? "YES" : "NO") );
+
+    return State;
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */