261 lines
8.2 KiB
C
261 lines
8.2 KiB
C
/***
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*os2dll.h - DLL/Multi-thread include
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*
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* Copyright (c) 1987-1993, Microsoft Corporation. All rights reserved.
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*
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*Purpose:
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*
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*Revision History:
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* 10-27-87 JCR Module created.
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* 11-13-87 SKS Added _HEAP_LOCK
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* 12-15-87 JCR Added _EXIT_LOCK
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* 01-07-88 BCM Added _SIGNAL_LOCK; upped MAXTHREADID from 16 to 32
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* 02-01-88 JCR Added _dll_mlock/_dll_munlock macros
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* 05-02-88 JCR Added _BHEAP_LOCK
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* 06-17-88 JCR Corrected prototypes for special mthread debug routines
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* 08-15-88 JCR _check_lock now returns int, not void
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* 08-22-88 GJF Modified to also work for the 386 (small model only)
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* 06-05-89 JCR 386 mthread support
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* 06-09-89 JCR 386: Added values to _tiddata struc (for _beginthread)
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* 07-13-89 JCR 386: Added _LOCKTAB_LOCK
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* 08-17-89 GJF Cleanup, now specific to OS/2 2.0 (i.e., 386 flat model)
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* 10-30-89 GJF Fixed copyright
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* 01-02-90 JCR Moved a bunch of definitions from os2dll.inc
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* 04-06-90 GJF Added _INC_OS2DLL stuff and #include <cruntime.h>. Made
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* all function _CALLTYPE2 (for now).
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* 04-10-90 GJF Added prototypes for _[un]lockexit().
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* 08-16-90 SBM Made _terrno and _tdoserrno int, not unsigned
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* 09-14-90 GJF Added _pxcptacttab, _pxcptinfoptr and _fpecode fields
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* to _tiddata struct.
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* 10-09-90 GJF Thread ids are of type unsigned long.
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* 12-06-90 SRW Added _OSFHND_LOCK
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* 06-04-91 GJF Win32 version of multi-thread types and prototypes.
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* 08-15-91 GJF Made _tdoserrno an unsigned long for Win32.
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* 08-20-91 JCR C++ and ANSI naming
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* 09-29-91 GJF Conditionally added prototypes for _getptd_lk
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* and _getptd1_lk for Win32 under DEBUG.
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* 10-03-91 JCR Added _cvtbuf to _tiddata structure
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* 02-17-92 GJF For Win32, replaced _NFILE_ with _NHANDLE_ and
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* _NSTREAM_.
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* 03-06-92 GJF For Win32, made _[un]mlock_[fh|stream]() macros
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* directly call _[un]lock().
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* 03-17-92 GJF Dropped _namebuf field from _tiddata structure for
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* Win32.
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* 08-05-92 GJF Function calling type and variable type macros.
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* 12-03-91 ETC Added _wtoken to _tiddata, added intl LOCK's;
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* added definition of wchar_t (needed for _wtoken).
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* 08-14-92 KRS Port ETC's _wtoken change from other tree.
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* 08-21-92 GJF Merged 08-05-92 and 08-14-92 versions.
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* 12-03-92 KRS Added _mtoken field for MTHREAD _mbstok().
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* 01-21-93 GJF Removed support for C6-386's _cdecl.
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* 02-25-93 GJF Purged Cruiser support and many outdated definitions
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* and declarations.
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* 12-14-93 SKS Add _freeptd(), which frees per-thread CRT data
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*
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****/
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#ifndef _INC_OS2DLL
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#ifdef __cplusplus
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extern "C" {
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#endif
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#include <cruntime.h>
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/*
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* Conditional macro definition for function calling type and variable type
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* qualifiers.
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*/
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#if ( (_MSC_VER >= 800) && (_M_IX86 >= 300) )
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/*
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* Definitions for MS C8-32 (386/486) compiler
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*/
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#define _CRTAPI1 __cdecl
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#define _CRTAPI2 __cdecl
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#else
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/*
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* Other compilers (e.g., MIPS)
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*/
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#define _CRTAPI1
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#define _CRTAPI2
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#endif
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/*
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* Define the number of supported handles and streams. The definitions
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* here must exactly match those in internal.h (for _NHANDLE_) and stdio.h
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* (for _NSTREAM_).
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*/
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#ifdef MTHREAD
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#define _NHANDLE_ 256
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#define _NSTREAM_ 40
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#else
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#define _NHANDLE_ 64
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#define _NSTREAM_ 20
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#endif
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/* Lock symbols */
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/* ---- do not change lock #1 without changing emulator ---- */
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#define _SIGNAL_LOCK 1 /* lock for signal() & emulator SignalAddress */
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/* emulator uses \math\include\os2dll.inc */
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#define _IOB_SCAN_LOCK 2 /* _iob[] table lock */
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#define _TMPNAM_LOCK 3 /* lock global tempnam variables */
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#define _INPUT_LOCK 4 /* lock for _input() routine */
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#define _OUTPUT_LOCK 5 /* lock for _output() routine */
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#define _CSCANF_LOCK 6 /* lock for _cscanf() routine */
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#define _CPRINTF_LOCK 7 /* lock for _cprintf() routine */
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#define _CONIO_LOCK 8 /* lock for conio routines */
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#define _HEAP_LOCK 9 /* lock for heap allocator routines */
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#define _BHEAP_LOCK 10 /* lock for based heap routines */
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#define _TIME_LOCK 11 /* lock for time functions */
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#define _ENV_LOCK 12 /* lock for environment variables */
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#define _EXIT_LOCK1 13 /* lock #1 for exit code */
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#define _EXIT_LOCK2 14 /* lock #2 for exit code */
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#define _THREADDATA_LOCK 15 /* lock for thread data table */
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#define _POPEN_LOCK 16 /* lock for _popen/_pclose database */
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#define _LOCKTAB_LOCK 17 /* lock to protect semaphore lock table */
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#define _OSFHND_LOCK 18 /* lock to protect _osfhnd array */
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#define _SETLOCALE_LOCK 19 /* lock for locale handles, etc. */
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#define _LC_COLLATE_LOCK 20 /* lock for LC_COLLATE locale */
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#define _LC_CTYPE_LOCK 21 /* lock for LC_CTYPE locale */
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#define _LC_MONETARY_LOCK 22 /* lock for LC_MONETARY locale */
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#define _LC_NUMERIC_LOCK 23 /* lock for LC_NUMERIC locale */
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#define _LC_TIME_LOCK 24 /* lock for LC_TIME locale */
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#define _STREAM_LOCKS 25 /* Table of stream locks */
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#ifdef _WIN32_
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#define _LAST_STREAM_LOCK (_STREAM_LOCKS+_NSTREAM_-1) /* Last stream lock */
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#else
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#define _LAST_STREAM_LOCK (_STREAM_LOCKS+_NFILE_-1) /* Last stream lock */
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#endif
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#define _FH_LOCKS (_LAST_STREAM_LOCK+1) /* Table of fh locks */
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#ifdef _WIN32_
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#define _LAST_FH_LOCK (_FH_LOCKS+_NHANDLE_-1) /* Last fh lock */
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#else
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#define _LAST_FH_LOCK (_FH_LOCKS+_NFILE_-1) /* Last fh lock */
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#endif
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#define _TOTAL_LOCKS (_LAST_FH_LOCK+1) /* Total number of locks */
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#define _LOCK_BIT_INTS (_TOTAL_LOCKS/(sizeof(unsigned)*8))+1 /* # of ints to hold lock bits */
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/* Multi-thread macros and prototypes */
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#ifdef MTHREAD
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/* need wchar_t for _wtoken field in _tiddata */
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#ifndef _WCHAR_T_DEFINED
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typedef unsigned short wchar_t;
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#define _WCHAR_T_DEFINED
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#endif
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extern unsigned long _CRTAPI1 __threadid(void);
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#define _threadid (__threadid())
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extern unsigned long _CRTAPI1 __threadhandle(void);
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#define _threadhandle (__threadhandle())
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/* Structure for each thread's data */
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struct _tiddata {
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unsigned long _tid; /* thread ID */
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unsigned long _thandle; /* thread handle */
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int _terrno; /* errno value */
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unsigned long _tdoserrno; /* _doserrno value */
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unsigned int _fpds; /* Floating Point data segment */
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unsigned long _holdrand; /* rand() seed value */
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char * _token; /* ptr to strtok() token */
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wchar_t * _wtoken; /* ptr to wcstok() token */
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#ifdef _MBCS
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unsigned char * _mtoken; /* ptr to _mbstok() token */
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#endif
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/* following pointers get malloc'd at runtime */
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char * _errmsg; /* ptr to strerror()/_strerror() buff */
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char * _namebuf0; /* ptr to tmpnam() buffer */
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char * _namebuf1; /* ptr to tmpfile() buffer */
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char * _asctimebuf; /* ptr to asctime() buffer */
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void * _gmtimebuf; /* ptr to gmtime() structure */
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char * _cvtbuf; /* ptr to ecvt()/fcvt buffer */
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/* following fields are needed by _beginthread code */
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void * _initaddr; /* initial user thread address */
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void * _initarg; /* initial user thread argument */
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/* following three fields are needed to support signal handling and
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* runtime errors */
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void * _pxcptacttab; /* ptr to exception-action table */
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void * _tpxcptinfoptrs; /* ptr to exception info pointers */
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int _tfpecode; /* float point exception code */
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};
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typedef struct _tiddata * _ptiddata;
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/*
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* Declaration of TLS index used in storing pointers to per-thread data
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* structures.
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*/
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extern unsigned long __tlsindex;
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/* macros */
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#define _lock_fh(fh) _lock(fh+_FH_LOCKS)
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#define _lock_str(s) _lock(s+_STREAM_LOCKS)
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#define _lock_fh_check(fh,flag) if (flag) _lock_fh(fh)
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#define _mlock(l) _lock(l)
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#define _munlock(l) _unlock(l)
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#define _unlock_fh(fh) _unlock(fh+_FH_LOCKS)
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#define _unlock_str(s) _unlock(s+_STREAM_LOCKS)
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#define _unlock_fh_check(fh,flag) if (flag) _unlock_fh(fh)
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/* multi-thread routines */
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void _CRTAPI1 _lock(int);
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void _CRTAPI1 _lockexit(void);
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void _CRTAPI1 _unlock(int);
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void _CRTAPI1 _unlockexit(void);
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_ptiddata _CRTAPI1 _getptd(void); /* return address of per-thread CRT data */
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void _CRTAPI1 _freeptd(_ptiddata); /* free up the per-thread CRT data blocks */
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#else /* not MTHREAD */
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/* macros */
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#define _lock_fh(fh)
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#define _lock_str(s)
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#define _lock_fh_check(fh,flag)
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#define _mlock(l)
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#define _munlock(l)
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#define _unlock_fh(fh)
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#define _unlock_str(s)
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#define _unlock_fh_check(fh,flag)
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#endif /* MTHREAD */
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#ifdef __cplusplus
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}
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#endif
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#define _INC_OS2DLL
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#endif /* _INC_OS2DLL */
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