126 lines
3.2 KiB
C
126 lines
3.2 KiB
C
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/***
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*tidtable.c - Access thread data table
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*
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* Copyright (c) 1989-1993, Microsoft Corporation. All rights reserved.
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*
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*Purpose:
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* This module contains the following routines for multi-thread
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* data support:
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*
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* _mtinit = Initialize the mthread data
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* _getptd = get the pointer to the per-thread data structure for
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* the current thread
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* _freeptd = free up a per-thread data structure and its
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* subordinate structures
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* __threadid = return thread ID for the current thread
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* __threadhandle = return pseudo-handle for the current thread
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*
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*Revision History:
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* 05-04-90 JCR Translated from ASM to C for portable 32-bit OS/2
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* 06-04-90 GJF Changed error message interface.
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* 07-02-90 GJF Changed __threadid() for DCR 1024/2012.
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* 08-08-90 GJF Removed 32 from API names.
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* 10-08-90 GJF New-style function declarators.
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* 10-09-90 GJF Thread ids are of type unsigned long! Also, fixed a
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* bug in __threadid().
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* 10-22-90 GJF Another bug in __threadid().
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* 12-04-90 SRW Changed to include <oscalls.h> instead of <doscalls.h>
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* 12-06-90 SRW Added _CRUISER_ and _WIN32 conditionals.
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* 05-31-91 GJF Win32 version [_WIN32_].
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* 07-18-91 GJF Fixed many errors [_WIN32_].
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* 09-29-91 GJF Conditionally added _getptd_lk/_getptd1_lk so that
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* DEBUG version of mlock doesn't infinitely recurse
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* the first time _THREADDATA_LOCK is asserted [_WIN32_].
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* 01-30-92 GJF Must init. _pxcptacttab field to _XcptActTab.
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* 02-25-92 GJF Initialize _holdrand field to 1.
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* 02-13-93 GJF Revised to use TLS API. Also, purged Cruiser support.
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* 03-26-93 GJF Initialize ptd->_holdrand to 1L (see thread.c).
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* 04-16-93 SKS Add _mtterm to do multi-thread termination
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* Set freed __tlsindex to -1 again to prevent mis-use
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* 12-13-93 SKS Add _freeptd(), which frees up the per-thread data
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* maintained by the C run-time library.
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*
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*******************************************************************************/
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#include <windows.h>
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#include <cruntime.h>
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#include <internal.h>
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/****
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*_mtinit() - Init multi-thread data bases
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*
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*Purpose:
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* (1) Call _mtinitlocks to create/open all lock semaphores.
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* (2) Allocate a TLS index to hold pointers to per-thread data
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* structure.
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*
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* NOTES:
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* (1) Only to be called ONCE at startup
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* (2) Must be called BEFORE any mthread requests are made
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*
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*Entry:
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* <NONE>
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*Exit:
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* returns TRUE on success
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* returns FALSE on failure
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* user code should call _amsg_exit if failure is returned
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*
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*Uses:
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* <any registers may be modified at init time>
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*
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*Exceptions:
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*
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*******************************************************************************/
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int __cdecl _mtinit (
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void
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)
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{
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/*
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* Initialize the mthread lock data base
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*/
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return _mtinitlocks();
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}
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/****
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*_mtterm() - Clean-up multi-thread data bases
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*
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*Purpose:
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* (1) Call _mtdeletelocks to free up all lock semaphores.
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* (2) Free up the TLS index used to hold pointers to
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* per-thread data structure.
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*
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* NOTES:
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* (1) Only to be called ONCE at termination
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* (2) Must be called AFTER all mthread requests are made
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*
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*Entry:
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* <NONE>
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*Exit:
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* returns
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*
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*Uses:
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*
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*Exceptions:
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*
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*******************************************************************************/
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void __cdecl _mtterm (
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void
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)
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{
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/*
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* Clean up the mthread lock data base
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*/
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_mtdeletelocks();
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}
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