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* 02-25-93 GJF Purged Cruiser support and many outdated definitions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