326 lines
8.3 KiB
PHP
326 lines
8.3 KiB
PHP
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;***
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;os2dll.inc - DynaLib/Multi-thread parameter definitions
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;
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; Copyright (c) 1987-1991, 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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; 10-22-87 JCR Module created
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; 11-13-87 SKS Added _HEAP_LOCK
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; 11-16-87 JCR Added _mlock/_munlock macros
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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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; 05-03-88 JCR Added _BHEAP_LOCK
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; 08-03-88 JCR Bumped maximum file count to 256
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; 08-09-88 GJF Added _lock_str/_unlock_str macros
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; 08-12-88 JCR 386 version
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; 06-02-89 JCR 386 mthread support
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; 06-09-89 JCR 386: Added values to _tiddata struc (for _beginthread)
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; 07-11-89 JCR 386mt: Corrected _DEBUG_LOCK_SIZE value
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; 07-13-89 JCR 386: Added _LOCKTAB_LOCK and some macros
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; 09-14-90 GJF Added __pxcptacttab, __pxcptinfoptr and __fpecode
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; fields to _tiddata struc.
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; 10-03-91 JCR Added _cvtbuf to _tiddata structure
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;
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;*******************************************************************************
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_NFILE_ = 256 ;maximum number of streams
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;Lock table offsets
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;------------------
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;[NOTE: These values must coincide with the values in os2dll.h.]
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;[NOTE: do not change _SIGNAL_LOCK without changing emulator's os2dll.inc.]
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_SIGNAL_LOCK equ 1 ; lock for signal() and emulator SignalAddress
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; emulator uses \math\include\os2dll.inc
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_IOB_SCAN_LOCK equ 2 ; _iob[] table lock
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_TMPNAM_LOCK equ 3 ; lock global tempnam variables
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_INPUT_LOCK equ 4 ; lock for _input() routine
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_OUTPUT_LOCK equ 5 ; lock for _output() routine
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_CSCANF_LOCK equ 6 ; lock for _cscanf() routine
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_CPRINTF_LOCK equ 7 ; lock for _cprintf() routine
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_CONIO_LOCK equ 8 ; lock for conio routines
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_HEAP_LOCK equ 9 ; lock for heap allocator routines
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_BHEAP_LOCK equ 10 ; lock for based heap routines
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_TIME_LOCK equ 11 ; lock for time functions
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_ENV_LOCK equ 12 ; lock for environment variables
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_EXIT_LOCK1 equ 13 ; lock #1 for exit code
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_EXIT_LOCK2 equ 14 ; lock #2 for exit code
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_THREADDATA_LOCK equ 15 ; lock for thread data table
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_POPEN_LOCK equ 16 ; lock for _popen/_pclose database
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_SSCANF_LOCK equ 17 ; lock for sscanf() iob
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_SPRINTF_LOCK equ 18 ; lock for sprintf() iob
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_VSPRINTF_LOCK equ 19 ; lock for vsprintf() iob
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_LOCKTAB_LOCK equ 20 ; lock to protect semaphore lock table
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_OSFHND_LOCK equ 21 ; lock to protect _osfhnd array
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_STREAM_LOCKS equ 21 ; Table of stream locks
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_LAST_STREAM_LOCK equ (_STREAM_LOCKS+_NFILE_-1) ; Last stream lock
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_FH_LOCKS equ (_LAST_STREAM_LOCK+1) ; Table of fh locks
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_LAST_FH_LOCK equ (_FH_LOCKS+_NFILE_-1) ; Last fh lock
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_TOTAL_LOCKS equ _LAST_FH_LOCK+1 ; Total number of locks
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_LOCK_BIT_INTS equ (_TOTAL_LOCKS/(ISIZE*8))+1; # of ints to hold lock bits
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;*** THE FH-LOCK TABLE SHOULD REALLY BASED ON __nfile NOT _NFILE_ ***
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IFDEF DEBUG
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;General multi-thread values
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;---------------------------
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MAXTHREADID EQU 32 ; max thread id supported
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THREADINTS EQU (MAXTHREADID/(ISIZE*8)) ; # of ints to hold thread bits
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;Semaphore debugging lock structure
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;----------------------------------
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debug_lock struc
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% holder DINT THREADINTS dup (0) ;bit set for thread holding lock
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% waiters DINT THREADINTS dup (0) ;bit(s) set for threads waiting
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% lockcnt DINT 0 ;total # of times lock has been aquired
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% collcnt DINT 0 ;total # of lock collisions
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debug_lock ends
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DEBUG_LOCK_SIZE EQU (2*(THREADINTS*ISIZE))+(2*ISIZE) ;size of debug_lock struct
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ENDIF
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; Tid Table Definitions
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; ---------------------
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IFDEF MTHREAD
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; Structure for each thread's data
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; [NOTE: Tid structure and data must agree with os2dll.h. In addition,
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; startup depends on __stkhqq being the third entry in the structure.]
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_tiddata struc
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% __terrno DINT 0 ; errno value
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% __tdoserrno DINT 0 ; _doserrno value
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% __stkhqq DINT 0 ; stack limit
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% __fpds DINT 0 ; Floating Point data segment
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% __holdrand DLONG 0 ; rand() seed value
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% __token DDPTR 0 ; * to strtok() token
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;following pointers get malloc'd at runtime
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% __errmsg DDPTR 0 ; * to strerror()/_strerror() buffer
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% __namebuf DDPTR 0 ; * to tmpfile() buffer
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% __asctimebuf DDPTR 0 ; * to asctime() buffer
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% __gmtimebuf DDPTR 0 ; * to gmtime() structure
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% __cvtbuf DDPTR 0 ; * to ecvt()/fcvt() buffer
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;following three values needed by _beginthread code
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% __initaddr DCPTR 0 ; initial user thread address
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% __initarg DDPTR 0 ; initial user thread argument
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% __initstksz DINT 0 ; initial stack size (specified by user)
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;following three fields are needed to support signal handling and
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;runtime errors
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% __pxcptacttab DDPTR 0 ; * to exception-action table
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% __tpxcptinfoptrs DDPTR 0 ; * to exception info pointers
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% __tfpecode DINT 0 ; * float point exception code
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_tiddata ends
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_TIDDATASIZE = (size _tiddata) ; size of _tiddata entry (bytes)
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_TIDSHIFT = 6 ; # of bits to shift to get _TIDSIZE
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_TIDSIZE = (1 shl _TIDSHIFT) ; # of bytes in each tid entry (rounded
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; to next power of two).
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_TID_INCSIZE equ 1000h ; grow thread table a page at a time
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_TIDTABGROW = (_TID_INCSIZE/_TIDSIZE) ; table increment (# of tid's per page)
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; (must be power of 2!!!)
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_TIDTABMASK = (NOT (_TIDTABGROW -1)) ; mask off grow bits
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_TID_MAXTID = 1024 ; max # of tids supported
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_TID_REGSIZE = (_TID_MAXTID * _TIDSIZE) ; size of tid table region
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.ERRE (_TIDSIZE GE _TIDDATASIZE) ; make sure _TIDSIZE >= _TIDDATASIZE
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.ERRE ((_TIDSIZE SHR 1) LT _TIDDATASIZE); make sure _TIDSIZE/2 < _TIDDATASIZE
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.ERRE (_TIDTABGROW GE 1) ; must be at least 1 !!!
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.ERRE (_TID_MAXTID GE _TIDTABGROW) ; make sure _TID_MAXTID >= _TIDTABGROW
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ENDIF ;MTHREAD
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;Declarations
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;------------
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;Multi-thread Macros
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;-------------------
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;_mlock -- Aquire a lock
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;Arg = lock number
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IFDEF MTHREAD
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_mlock MACRO locknum
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push locknum
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call _lock
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add rsp,ISIZE
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ENDM
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ELSE
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_mlock MACRO locknum
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ENDM
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ENDIF
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;_munlock -- Release a lock
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;Arg = lock number
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IFDEF MTHREAD
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_munlock MACRO locknum
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push locknum
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call _unlock
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add rsp,ISIZE
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ENDM
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ELSE
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_munlock MACRO locknum
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ENDM
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ENDIF
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;_mwait -- Wait for a lock but don't aquire it
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;Arg = lock number
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IFDEF MTHREAD
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_mwait MACRO locknum
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push locknum
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call _waitlock
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add rsp,ISIZE
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ENDM
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ELSE
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_mwait MACRO locknum
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ENDM
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ENDIF
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;_lock_fh -- Lock file handle
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;Arg = file handle
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IFDEF MTHREAD
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_lock_fh MACRO fh
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push fh
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call _lock_file
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add rsp,ISIZE
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ENDM
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ELSE
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_lock_fh MACRO fh
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ENDM
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ENDIF
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;_unlock_fh -- Unlock file handle
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;Arg = register containing file handle
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IFDEF MTHREAD
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_unlock_fh MACRO fh
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push fh
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call _unlock_file
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add rsp,ISIZE
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ENDM
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ELSE
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_unlock_fh MACRO fh
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ENDM
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ENDIF
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;_unlock_fh_check -- Unlock file handle if flag is set
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;Args: reg = register to use in the macro (e.g., ax)
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; file = file handle (e.g., bx or [fh])
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; flag = lock/unlock flag (e.g., [lock_flag])
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; (0 = no lock/unlock operation)
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IFDEF MTHREAD
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_unlock_fh_check MACRO reg,file,flag
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LOCAL no_unlock ;; local label
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mov reg,flag ;; get lock flag
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or reg,reg ;; test it
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jz no_unlock ;; 0 = no lock/unlock
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push file ;; unlock file
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call _unlock_file
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add rsp,ISIZE
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no_unlock:
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ENDM
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ELSE
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_unlock_fh_check MACRO reg,file,flag
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ENDM
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ENDIF
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;_lock_fh_check -- Lock file handle if flag is set
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;Args: reg = register to use in the macro (e.g., ax)
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; file = file handle (e.g., bx or [fh])
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; flag = lock/unlock flag (e.g., [lock_flag])
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; (0 = no lock/unlock operation)
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IFDEF MTHREAD
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_lock_fh_check MACRO reg,file,flag
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LOCAL no_lock ;; local label
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mov reg,flag ;; get lock flag
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or reg,reg ;; test it
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jz no_unlock ;; 0 = no lock/unlock
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push file ;; lock the file
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call _lock_file
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add rsp,ISIZE
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no_lock:
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ENDM
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ELSE
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_lock_fh_check MACRO reg,file,flag
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ENDM
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ENDIF
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;_lock_str -- Acquire stream lock
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;Arg: str = index of stream in _iob[]
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IFDEF MTHREAD
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_lock_str MACRO str
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push str
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call _lock_stream
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add rsp,ISIZE
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ENDM
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ELSE
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_lock_str MACRO str
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ENDM
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ENDIF
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;_unlock_str -- Unlock stream
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;Arg: str = index of stream in _iob[]
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IFDEF MTHREAD
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_unlock_str MACRO str
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push str
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call _unlock_stream
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add rsp,ISIZE
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ENDM
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ELSE
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_unlock_str MACRO str
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ENDM
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ENDIF
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;_dll_mlock -- Aquire a lock (set/clear DS)
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;Arg = lock number
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IFDEF _LOAD_DGROUP
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IFDEF MTHREAD
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_dll_mlock MACRO locknum
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push locknum
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call _dll_lock
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add rsp,ISIZE
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ENDM
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ELSE
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_dll_mlock MACRO locknum
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ENDM
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ENDIF
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ENDIF
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;_dll_munlock -- Release a lock (set/clear DS)
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;Arg = lock number
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IFDEF _LOAD_DGROUP
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IFDEF MTHREAD
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_dll_munlock MACRO locknum
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push locknum
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call _dll_unlock
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add rsp,ISIZE
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ENDM
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ELSE
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_dll_munlock MACRO locknum
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ENDM
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ENDIF
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ENDIF
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