1 files changed, 122 insertions, 0 deletions
diff --git a/src/gc/env/gcenv.structs.h b/src/gc/env/gcenv.structs.h
new file mode 100644
index 0000000000..5887dd7852
--- /dev/null
+++ b/src/gc/env/gcenv.structs.h
@@ -0,0 +1,122 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+#ifndef __GCENV_STRUCTS_INCLUDED__
+#define __GCENV_STRUCTS_INCLUDED__
+//
+// Structs shared between the GC and the environment
+//
+
+struct GCSystemInfo
+{
+    uint32_t dwNumberOfProcessors;
+    uint32_t dwPageSize;
+    uint32_t dwAllocationGranularity;
+};
+
+typedef void * HANDLE;
+
+#ifdef PLATFORM_UNIX
+
+typedef char TCHAR;
+#define _T(s) s
+
+#else
+
+#ifndef _INC_WINDOWS
+typedef wchar_t TCHAR;
+#define _T(s) L##s
+#endif
+
+#endif
+
+#ifdef PLATFORM_UNIX
+
+class EEThreadId
+{
+    pthread_t m_id;
+    // Indicates whether the m_id is valid or not. pthread_t doesn't have any
+    // portable "invalid" value.
+    bool m_isValid;
+
+public:
+    bool IsCurrentThread()
+    {
+        return m_isValid && pthread_equal(m_id, pthread_self());
+    }
+
+    void SetToCurrentThread()
+    {
+        m_id = pthread_self();
+        m_isValid = true;
+    }
+
+    void Clear()
+    {
+        m_isValid = false;
+    }
+};
+
+#else // PLATFORM_UNIX
+
+#ifndef _INC_WINDOWS
+extern "C" uint32_t __stdcall GetCurrentThreadId();
+#endif
+
+class EEThreadId
+{
+    uint32_t m_uiId;
+public:
+
+    bool IsCurrentThread()
+    {
+        return m_uiId == ::GetCurrentThreadId();
+    }
+
+    void SetToCurrentThread()
+    {
+        m_uiId = ::GetCurrentThreadId();
+    }
+
+    void Clear()
+    {
+        m_uiId = 0;
+    }
+};
+
+#endif // PLATFORM_UNIX
+
+#ifndef _INC_WINDOWS
+
+#ifdef PLATFORM_UNIX
+
+typedef struct _RTL_CRITICAL_SECTION {
+    pthread_mutex_t mutex;
+} CRITICAL_SECTION, RTL_CRITICAL_SECTION, *PRTL_CRITICAL_SECTION;
+
+#else
+
+#pragma pack(push, 8)
+
+typedef struct _RTL_CRITICAL_SECTION {
+    void* DebugInfo;
+
+    //
+    //  The following three fields control entering and exiting the critical
+    //  section for the resource
+    //
+
+    int32_t LockCount;
+    int32_t RecursionCount;
+    HANDLE OwningThread;        // from the thread's ClientId->UniqueThread
+    HANDLE LockSemaphore;
+    uintptr_t SpinCount;        // force size on 64-bit systems when packed
+} CRITICAL_SECTION, RTL_CRITICAL_SECTION, *PRTL_CRITICAL_SECTION;
+
+#pragma pack(pop)
+
+#endif
+
+#endif // _INC_WINDOWS
+
+#endif // __GCENV_STRUCTS_INCLUDED__