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// THIS CODE AND INFORMATION IS PROVIDED "AS IS" WITHOUT WARRANTY OF
// ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING BUT NOT LIMITED TO
// THE IMPLIED WARRANTIES OF MERCHANTABILITY AND/OR FITNESS FOR A
// PARTICULAR PURPOSE.
//
// Copyright (c) Microsoft Corporation. All rights reserved.
//
//
// Emulates a subset of the Win32 threading API as a layer on top of WinRT threadpools.
//
// Supported features:
//
// - CreateThread (returns a standard Win32 handle which can be waited on, then closed)
// - CREATE_SUSPENDED and ResumeThread
// - Partial support for SetThreadPriority (see below)
// - Sleep
// - Thread local storage (TlsAlloc, TlsFree, TlsGetValue, TlsSetValue)
//
// Differences from Win32:
//
// - If using TLS other than from this CreateThread emulation, call TlsShutdown before thread/task exit
// - No ExitThread or TerminateThread (just return from the thread function to exit)
// - No SuspendThread, so ResumeThread is only useful in combination with CREATE_SUSPENDED
// - SetThreadPriority is only available while a thread is in CREATE_SUSPENDED state
// - SetThreadPriority only supports three priority levels (negative, zero, or positive)
// - No thread identifier APIs (GetThreadId, GetCurrentThreadId, OpenThread)
// - No affinity APIs
// - No GetExitCodeThread
// - Failure cases return error codes but do not always call SetLastError
#pragma once
#include <windows.h>
namespace ThreadEmulation
{
#ifndef CREATE_SUSPENDED
#define CREATE_SUSPENDED 0x00000004
#endif
HANDLE WINAPI CreateThread(_In_opt_ LPSECURITY_ATTRIBUTES unusedThreadAttributes, _In_ SIZE_T unusedStackSize, _In_ LPTHREAD_START_ROUTINE lpStartAddress, _In_opt_ LPVOID lpParameter, _In_ DWORD dwCreationFlags, _Out_opt_ LPDWORD unusedThreadId);
DWORD WINAPI ResumeThread(_In_ HANDLE hThread);
BOOL WINAPI SetThreadPriority(_In_ HANDLE hThread, _In_ int nPriority);
VOID WINAPI Sleep(_In_ DWORD dwMilliseconds);
DWORD WINAPI TlsAlloc();
BOOL WINAPI TlsFree(_In_ DWORD dwTlsIndex);
LPVOID WINAPI TlsGetValue(_In_ DWORD dwTlsIndex);
BOOL WINAPI TlsSetValue(_In_ DWORD dwTlsIndex, _In_opt_ LPVOID lpTlsValue);
void WINAPI TlsShutdown();
}
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