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simh-testsetgenerator/sim_tmxr.h
Mark Pizzolato 7c38b83d7c Asynchronous Multiplexer and Console Support 
scp.c, scp.h, sim_defs.h
     - Added commands:
          SHOW MULTIPLEXER (MUX)
          SHOW TIMERS
     - Added facilities/APIs:
          sim_activate_after - time specific event scheduling (vs instruction scheduling) API visible, optional separate thread implementation in a later revision
     - Changed Commands:
          SET CONSOLE DEBUG no longer affects global debugging, but merely debugging for the console subsystem.  Use SET DEBUG and SET NODEBUG to affect global debugging.
     - Added Asynchronous polling support

sim_tmxr.h, sim_tmxr.c
     - Added Asynchronous capabilities to the multiplexer subsystem to avoid polling for input and to deliver input data instantly when it arrives instead of delaying for up to one or more full simulated clock ticks.
     - Added debug trace support
     - Added statistic tracking of total bytes transmitted on each line
     - Added more aggressive attempts to flush transmit buffers when they fill before dropping tranmitted characters
     - Fixed status return of tmxr_putc_ln to return SCPE_LOST if the transmitting line isn't connected or buffered.

sim_console.h, sim_console.c
     - Fixed issue where connections to console telnet sessions would succeed for the first connection, but hang indefinitely for additional connects without rejecting due to all lines being busy.  This is handled by using an internal device and unit to hang the required polling on.  Connection polls happen once per second.
     - Added console debugging/trace support.
     - Added Asynchronous capabilities to the console subsystem to avoid polling for input and to deliver input data instantly when it arrives instead of delaying for up to one or more full simulated clock ticks.
     - Added tmxr_set_console_input_unit() API to support asynchronous simulator console I/O

sim_timer.h, sim_timer.c
     - Added SHOW TIMERS support
     - Added mechanism to capture the timer the simulator uses for its clock tick and make this timer globally available for other uses

PDP11/pdp11_dz.c
     - Added debug trace support

PDP11/pdp11_vh.c
     - Added debug trace support
     - Changed timing mechanisms to not assume that the count unit service routine calls measures the passage of time, and created a separate unit to measure time.

VAX/vax_stddev.c
     - Added call to tmxr_set_console_input_unit to leverage Asynchronous console I/O
2012-05-12 13:42:44 -07:00

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/* sim_tmxr.h: terminal multiplexer definitions
Copyright (c) 2001-2008, Robert M Supnik
Permission is hereby granted, free of charge, to any person obtaining a
copy of this software and associated documentation files (the "Software"),
to deal in the Software without restriction, including without limitation
the rights to use, copy, modify, merge, publish, distribute, sublicense,
and/or sell copies of the Software, and to permit persons to whom the
Software is furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
ROBERT M SUPNIK BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
Except as contained in this notice, the name of Robert M Supnik shall not be
used in advertising or otherwise to promote the sale, use or other dealings
in this Software without prior written authorization from Robert M Supnik.
Based on the original DZ11 simulator by Thord Nilson, as updated by
Arthur Krewat.
17-Jan-11 MP Added buffered line capabilities
20-Nov-08 RMS Added three new standardized SHOW routines
27-May-08 JDB Added lnorder to TMXR structure,
added tmxr_set_lnorder and tmxr_set_lnorder
14-May-08 JDB Added dptr to TMXR structure
04-Jan-04 RMS Changed TMXR ldsc to be pointer to linedesc array
Added tmxr_linemsg, logging (from Mark Pizzolato)
29-Dec-03 RMS Added output stall support, increased buffer size
22-Dec-02 RMS Added break support (from Mark Pizzolato)
20-Aug-02 RMS Added tmxr_open_master, tmxr_close_master, tmxr.port
30-Dec-01 RMS Renamed tmxr_fstatus, added tmxr_fstats
20-Oct-01 RMS Removed tmxr_getchar, formalized buffer guard,
added tmxr_rqln, tmxr_tqln
*/
#ifndef _SIM_TMXR_H_
#define _SIM_TMXR_H_ 0
#include "sim_sock.h"
#define TMXR_V_VALID 15
#define TMXR_VALID (1 << TMXR_V_VALID)
#define TMXR_MAXBUF 256 /* buffer size */
#define TMXR_GUARD 12 /* buffer guard */
#define TMXR_DBG_XMT 0x10000 /* Debug Transmit Data */
#define TMXR_DBG_RCV 0x20000 /* Debug Received Data */
#define TMXR_DBG_TRC 0x40000 /* Debug trace routine calls */
/* Unit flags */
#define TMUF_V_NOASYNCH (UNIT_V_UF + 12) /* Asynch Disabled unit */
#define TMUF_NOASYNCH (1u << TMUF_V_NOASYNCH)
typedef struct tmln TMLN;
typedef struct tmxr TMXR;
struct tmln {
SOCKET conn; /* line conn */
uint32 ipad; /* IP address */
uint32 cnms; /* conn time */
int32 tsta; /* Telnet state */
int32 rcve; /* rcv enable */
int32 xmte; /* xmt enable */
int32 dstb; /* disable Tlnt bin */
int32 rxbpr; /* rcv buf remove */
int32 rxbpi; /* rcv buf insert */
int32 rxcnt; /* rcv count */
int32 txbpr; /* xmt buf remove */
int32 txbpi; /* xmt buf insert */
int32 txcnt; /* xmt count */
int32 txdrp; /* xmt drop count */
int32 txbsz; /* xmt buffer size */
int32 txbfd; /* xmt buffered flag */
FILE *txlog; /* xmt log file */
FILEREF *txlogref; /* xmt log file reference */
char *txlogname; /* xmt log file name */
char rxb[TMXR_MAXBUF]; /* rcv buffer */
char rbr[TMXR_MAXBUF]; /* rcv break */
char *txb; /* xmt buffer */
TMXR *mp; /* back pointer to mux */
UNIT *uptr; /* pointer to receive poll unit */
};
struct tmxr {
int32 lines; /* # lines */
int32 port; /* listening port */
SOCKET master; /* master socket */
TMLN *ldsc; /* line descriptors */
int32 *lnorder; /* line connection order */
DEVICE *dptr; /* multiplexer device */
UNIT *uptr; /* polling unit */
char logfiletmpl[FILENAME_MAX]; /* template logfile name */
int32 txcount; /* count of transmit bytes */
int32 buffered; /* Buffered Line Behavior and Buffer Size Flag */
int32 sessions; /* count of tcp connections received */
};
int32 tmxr_poll_conn (TMXR *mp);
void tmxr_reset_ln (TMLN *lp);
int32 tmxr_getc_ln (TMLN *lp);
void tmxr_poll_rx (TMXR *mp);
t_stat tmxr_putc_ln (TMLN *lp, int32 chr);
void tmxr_poll_tx (TMXR *mp);
t_stat tmxr_open_master (TMXR *mp, char *cptr);
t_stat tmxr_close_master (TMXR *mp);
t_stat tmxr_attach_ex (TMXR *mp, UNIT *uptr, char *cptr, t_bool async);
t_stat tmxr_detach (TMXR *mp, UNIT *uptr);
t_stat tmxr_set_line_unit (TMXR *mp, int line, UNIT *uptr_poll);
t_stat tmxr_set_console_input_unit (UNIT *uptr);
t_stat tmxr_ex (t_value *vptr, t_addr addr, UNIT *uptr, int32 sw);
t_stat tmxr_dep (t_value val, t_addr addr, UNIT *uptr, int32 sw);
void tmxr_msg (SOCKET sock, char *msg);
void tmxr_linemsg (TMLN *lp, char *msg);
void tmxr_fconns (FILE *st, TMLN *lp, int32 ln);
void tmxr_fstats (FILE *st, TMLN *lp, int32 ln);
t_stat tmxr_set_log (UNIT *uptr, int32 val, char *cptr, void *desc);
t_stat tmxr_set_nolog (UNIT *uptr, int32 val, char *cptr, void *desc);
t_stat tmxr_show_log (FILE *st, UNIT *uptr, int32 val, void *desc);
t_stat tmxr_dscln (UNIT *uptr, int32 val, char *cptr, void *desc);
int32 tmxr_rqln (TMLN *lp);
int32 tmxr_tqln (TMLN *lp);
t_stat tmxr_set_lnorder (UNIT *uptr, int32 val, char *cptr, void *desc);
t_stat tmxr_show_lnorder (FILE *st, UNIT *uptr, int32 val, void *desc);
t_stat tmxr_show_summ (FILE *st, UNIT *uptr, int32 val, void *desc);
t_stat tmxr_show_cstat (FILE *st, UNIT *uptr, int32 val, void *desc);
t_stat tmxr_show_lines (FILE *st, UNIT *uptr, int32 val, void *desc);
t_stat tmxr_show_open_devices (FILE* st, DEVICE *dptr, UNIT* uptr, int32 val, char* desc);
t_stat tmxr_activate (UNIT *uptr, int32 interval);
t_stat tmxr_change_async (void);
t_stat tmxr_startup (void);
t_stat tmxr_shutdown (void);
t_stat tmxr_start_poll (void);
t_stat tmxr_stop_poll (void);
void _tmxr_debug (uint32 dbits, TMLN *lp, const char *msg, char *buf, int bufsize);
extern FILE *sim_deb; /* debug file */
#define tmxr_debug(dbits, lp, msg, buf, bufsize) if (sim_deb && (lp)->mp->dptr && ((dbits) & (lp)->mp->dptr->dctrl)) _tmxr_debug (dbits, lp, msg, buf, bufsize); else (void)0
#define tmxr_debug_trace(mp, msg) if (sim_deb && (mp)->dptr && (TMXR_DBG_TRC & (mp)->dptr->dctrl)) sim_debug (TMXR_DBG_TRC, mp->dptr, "%s\n", (msg)); else (void)0
#define tmxr_debug_trace_line(lp, msg) if (sim_deb && (lp)->mp && (lp)->mp->dptr && (TMXR_DBG_TRC & (lp)->mp->dptr->dctrl)) sim_debug (TMXR_DBG_TRC, (lp)->mp->dptr, "%s\n", (msg)); else (void)0
#if defined(SIM_ASYNCH_IO) && !defined(NO_ASYNCH_MUX)
#define tmxr_attach(mp, uptr, cptr) tmxr_attach_ex(mp, uptr, cptr, TRUE)
#if (!defined(NOT_MUX_USING_CODE))
#define sim_activate tmxr_activate
#endif
#else
#define tmxr_attach(mp, uptr, cptr) tmxr_attach_ex(mp, uptr, cptr, FALSE)
#endif
#endif /* _SIM_TMXR_H_ */
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