Initial community commit

1 files changed, 83 insertions, 0 deletions

diff --git a/Src/external_dependencies/openmpt-trunk/soundlib/AudioCriticalSection.cpp b/Src/external_dependencies/openmpt-trunk/soundlib/AudioCriticalSection.cpp
new file mode 100644
index 00000000..d7514e25
--- /dev/null
+++ b/Src/external_dependencies/openmpt-trunk/soundlib/AudioCriticalSection.cpp
@@ -0,0 +1,83 @@
+/*
+ * AudioCriticalSection.cpp
+ * -----------
+ * Purpose: Implementation of OpenMPT's critical section for access to CSoundFile.
+ * Notes  : (currently none)
+ * Authors: OpenMPT Devs
+ * The OpenMPT source code is released under the BSD license. Read LICENSE for more details.
+ */
+
+#include "stdafx.h"
+
+#include "AudioCriticalSection.h"
+
+#if defined(MODPLUG_TRACKER)
+#include "../misc/mptMutex.h"
+#endif
+
+OPENMPT_NAMESPACE_BEGIN
+
+#if defined(MODPLUG_TRACKER)
+
+#if MPT_COMPILER_MSVC
+_Acquires_lock_(m_refGlobalMutex.mutex)
+#endif // MPT_COMPILER_MSVC
+CriticalSection::CriticalSection()
+	: m_refGlobalMutex(Tracker::GetGlobalMutexRef())
+	, inSection(false)
+{
+	Enter();
+}
+
+CriticalSection::CriticalSection(CriticalSection &&other) noexcept
+	: m_refGlobalMutex(other.m_refGlobalMutex)
+	, inSection(other.inSection)
+{
+	other.inSection = false;
+}
+
+CriticalSection::CriticalSection(InitialState state)
+	: m_refGlobalMutex(Tracker::GetGlobalMutexRef())
+	, inSection(false)
+{
+	if(state == InitialState::Locked)
+	{
+		Enter();
+	}
+}
+
+#if MPT_COMPILER_MSVC
+_Acquires_lock_(m_refGlobalMutex.mutex)
+#endif // MPT_COMPILER_MSVC
+void CriticalSection::Enter()
+{
+	if(!inSection)
+	{
+		inSection = true;
+		m_refGlobalMutex.lock();
+	}
+}
+
+#if MPT_COMPILER_MSVC
+_Requires_lock_held_(m_refGlobalMutex.mutex) _Releases_lock_(m_refGlobalMutex.mutex)
+#endif // MPT_COMPILER_MSVC
+void CriticalSection::Leave()
+{
+	if(inSection)
+	{
+		inSection = false;
+		m_refGlobalMutex.unlock();
+	}
+}
+CriticalSection::~CriticalSection()
+{
+	Leave();
+}
+
+#else
+
+MPT_MSVC_WORKAROUND_LNK4221(AudioCriticalSection)
+
+#endif
+
+OPENMPT_NAMESPACE_END