/*==LICENSE==*

CyanWorlds.com Engine - MMOG client, server and tools
Copyright (C) 2011  Cyan Worlds, Inc.

This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program.  If not, see <http://www.gnu.org/licenses/>.

You can contact Cyan Worlds, Inc. by email legal@cyan.com
 or by snail mail at:
      Cyan Worlds, Inc.
      14617 N Newport Hwy
      Mead, WA   99021

*==LICENSE==*/
/*****************************************************************************
*
*   $/Plasma20/Sources/Plasma/NucleusLib/pnUtilsExe/Private/pnUteTls.cpp
*   
***/

#include "../Pch.h"
#pragma hdrstop


/*****************************************************************************
*
*   Private data
*
***/

static unsigned s_tlsNoBlock = kTlsInvalidValue;


/*****************************************************************************
*
*   Local functions
*
***/

//============================================================================
static void ThreadCapsInitialize () {
    ThreadLocalAlloc(&s_tlsNoBlock);
}

//============================================================================
static void ThreadCapsDestroy () {
    if (s_tlsNoBlock != kTlsInvalidValue) {
        ThreadLocalFree(s_tlsNoBlock);
        s_tlsNoBlock = kTlsInvalidValue;
    }
}

//============================================================================
AUTO_INIT_FUNC(InitThreadCaps) {
    ThreadCapsInitialize();
    atexit(ThreadCapsDestroy);
}


/*****************************************************************************
*
*   Exports
*
***/

//============================================================================
void ThreadAllowBlock () {
    ThreadLocalSetValue(s_tlsNoBlock, (void *) false);
}

//============================================================================
void ThreadDenyBlock () {
    ThreadLocalSetValue(s_tlsNoBlock, (void *) true);
}

//============================================================================
void ThreadAssertCanBlock (const char file[], int line) {
    if (ThreadLocalGetValue(s_tlsNoBlock))
        ErrorAssert(line, file, "This thread may not block");
}