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90 lines
1.4 KiB
C
90 lines
1.4 KiB
C
/* $Id: tls.c,v 1.3 2002/10/29 04:45:35 rex Exp $
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*/
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/*
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* COPYRIGHT: See COPYING in the top level directory
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* PROJECT: ReactOS POSIX+ Subsystem
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* FILE: subsys/psx/lib/psxdll/misc/tls.c
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* PURPOSE: Thread local storage
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* PROGRAMMER: KJK::Hyperion <noog@libero.it>
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* UPDATE HISTORY:
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* 30/04/2002: Created
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*/
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#include <ddk/ntddk.h>
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#include <ntdll/rtl.h>
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#include <psx/tls.h>
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#include <psx/errno.h>
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__tls_index_t __tls_alloc()
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{
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ULONG nIndex;
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RtlAcquirePebLock();
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nIndex = RtlFindClearBitsAndSet(NtCurrentPeb()->TlsBitmap, 1, 0);
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if (nIndex == (ULONG)-1)
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errno = ENOMEM;
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else
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NtCurrentTeb()->TlsSlots[nIndex] = 0;
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RtlReleasePebLock();
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return(nIndex);
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}
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int __tls_free(__tls_index_t index)
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{
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if (index >= TLS_MINIMUM_AVAILABLE)
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{
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errno = ERANGE;
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return (-1);
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}
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RtlAcquirePebLock();
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if(RtlAreBitsSet(NtCurrentPeb()->TlsBitmap, index, 1))
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{
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NtSetInformationThread
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(
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NtCurrentThread(),
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ThreadZeroTlsCell,
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&index,
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sizeof(DWORD)
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);
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RtlClearBits(NtCurrentPeb()->TlsBitmap, index, 1);
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}
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RtlReleasePebLock();
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return (0);
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}
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void * __tls_get_val(__tls_index_t index)
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{
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if(index >= TLS_MINIMUM_AVAILABLE)
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{
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errno = ERANGE;
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return (0);
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}
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return (NtCurrentTeb()->TlsSlots[index]);
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}
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int __tls_put_val(__tls_index_t index, void * data)
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{
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if(index >= TLS_MINIMUM_AVAILABLE)
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{
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errno = ERANGE;
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return (-1);
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}
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NtCurrentTeb()->TlsSlots[index] = data;
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return (0);
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}
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/* EOF */
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