1 files changed, 137 insertions, 0 deletions
diff --git a/src/foundation/macos/Qt3DSUnixSync.cpp b/src/foundation/macos/Qt3DSUnixSync.cpp
new file mode 100644
index 0000000..52f9d7a
--- /dev/null
+++ b/src/foundation/macos/Qt3DSUnixSync.cpp
@@ -0,0 +1,137 @@
+/****************************************************************************
+**
+** Copyright (C) 2008-2012 NVIDIA Corporation.
+** Copyright (C) 2017 The Qt Company Ltd.
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of Qt 3D Studio.
+**
+** $QT_BEGIN_LICENSE:GPL$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://www.qt.io/contact-us.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3 or (at your option) any later version
+** approved by the KDE Free Qt Foundation. The licenses are as published by
+** the Free Software Foundation and appearing in the file LICENSE.GPL3
+** included in the packaging of this file. Please review the following
+** information to ensure the GNU General Public License requirements will
+** be met: https://www.gnu.org/licenses/gpl-3.0.html.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "foundation/Qt3DS.h"
+#include "foundation/Qt3DSSync.h"
+#include "foundation/Qt3DSAssert.h"
+#include "foundation/Qt3DSAllocator.h"
+#include "foundation/Qt3DSAllocatorCallback.h"
+
+#include <errno.h>
+#include <stdio.h>
+#include <pthread.h>
+#include <time.h>
+#include <sys/time.h>
+
+namespace qt3ds {
+namespace foundation {
+
+    class SyncImpl
+    {
+    public:
+        SyncImpl(NVAllocatorCallback &alloc)
+            : mAllocator(alloc)
+        {
+        }
+        NVAllocatorCallback &mAllocator;
+        pthread_mutex_t mutex;
+        pthread_cond_t cond;
+        volatile bool is_set;
+    };
+
+    struct NVLinuxScopeLock
+    {
+        NVLinuxScopeLock(pthread_mutex_t &m)
+            : mMutex(m)
+        {
+            pthread_mutex_lock(&mMutex);
+        }
+
+        ~NVLinuxScopeLock() { pthread_mutex_unlock(&mMutex); }
+    private:
+        pthread_mutex_t &mMutex;
+    };
+
+    Sync::Sync(NVAllocatorCallback &alloc)
+    {
+        mImpl = QT3DS_NEW(alloc, SyncImpl)(alloc);
+        int status = pthread_mutex_init(&mImpl->mutex, 0);
+        QT3DS_ASSERT(!status);
+        status = pthread_cond_init(&mImpl->cond, 0);
+        QT3DS_ASSERT(!status);
+        mImpl->is_set = false;
+    }
+
+    Sync::~Sync()
+    {
+        pthread_cond_destroy(&mImpl->cond);
+        pthread_mutex_destroy(&mImpl->mutex);
+        QT3DS_FREE(mImpl->mAllocator, mImpl);
+    }
+
+    void Sync::reset()
+    {
+        NVLinuxScopeLock lock(mImpl->mutex);
+        mImpl->is_set = false;
+    }
+
+    void Sync::set()
+    {
+        NVLinuxScopeLock lock(mImpl->mutex);
+        if (!mImpl->is_set) {
+            mImpl->is_set = true;
+            pthread_cond_broadcast(&mImpl->cond);
+        }
+    }
+
+    bool Sync::wait(QT3DSU32 ms)
+    {
+        NVLinuxScopeLock lock(mImpl->mutex);
+        if (!mImpl->is_set) {
+            if (ms == QT3DSU32(-1)) {
+                int status = pthread_cond_wait(&mImpl->cond, &mImpl->mutex);
+                QT3DS_ASSERT(!status);
+                (void)status;
+            } else {
+                timespec ts;
+                timeval tp;
+                gettimeofday(&tp, NULL);
+                QT3DSU32 sec = ms / 1000;
+                QT3DSU32 usec = (ms - 1000 * sec) * 1000;
+
+                // sschirm: taking into account that us might accumulate to a second
+                // otherwise the pthread_cond_timedwait complains on osx.
+                usec = tp.tv_usec + usec;
+                QT3DSU32 div_sec = usec / 1000000;
+                QT3DSU32 rem_usec = usec - div_sec * 1000000;
+
+                ts.tv_sec = tp.tv_sec + sec + div_sec;
+                ts.tv_nsec = rem_usec * 1000;
+
+                int ierr = pthread_cond_timedwait(&mImpl->cond, &mImpl->mutex, &ts);
+                QT3DS_ASSERT((ierr == 0) || (ierr == ETIMEDOUT));
+                (void)ierr;
+            }
+        }
+        return mImpl->is_set;
+    }
+
+} // namespace foundation
+} // namespace qt3ds