Main server program for sinqhm_srv
This commit is contained in:
cvs
361
sinqhm/sinqhm_srv_main.c
Executable file
361
sinqhm/sinqhm_srv_main.c
Executable file
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#define IDENT "1D02"
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/*
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** +--------------------------------------------------------------+
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** | Paul Scherrer Institute |
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** | SINQ Division |
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** | |
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** | This software may be used freely by non-profit organizations.|
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** | It may be copied provided that the name of P.S.I. and of the |
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** | author is included. Neither P.S.I. nor the author assume any |
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** | responsibility for the use of this software outside of P.S.I.|
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** +--------------------------------------------------------------+
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**
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** Module Name . . . . . . . . : [...SinqHM]SinqHM_srv_main.c
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**
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** Author . . . . . . . . . . : D. Maden
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** Date of creation . . . . . . : Oct 1996
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**
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** Updates:
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** 1A01 1-Oct-1996 DM Initial version.
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** 1B01 16-Jul-1997 DM Flush fibre-optic FIFO on SQHM_ZERO and SQHM_WRITE.
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** 1C01 24-Jun-1998 DM Add TOF support.
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** 1C06 10-Aug-1999 DM Add instrument dependent conditional code.
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**---------------------------------------------------------------------------
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** SinqHM_srv_main.c is the main program of a SINQ Histogram Memory process
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** which will run in a front-end processor and perform the necessary
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** operations for a SINQ multi-detector.
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**
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** Communication between SinqHM_srv and the client is via TCP/IP protocol.
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**
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** To compile and link this program for VxWorks on PSS123, use:
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**
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ccvx '-DINST="<instr>"' SinqHM_srv_main.c
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ccvx '-DINST="<instr>"' SinqHM_srv_routines.c
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ccvx '-DINST="<instr>"' SinqHM_srv_filler.c
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ccvx '-DINST="<instr>"' SinqHM_srv_server.c
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** where
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ccvx = ccppc -O0 \
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-mcpu=603 \
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-I${WIND_BASE}/target/h \
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-fno-builtin \
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-fno-for-scope \
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-nostdinc \
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-DCPU=PPC603 \
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-D_GNU_TOOL \
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-gdwarf -c -Wimplicit
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** and
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** <instr> = DMC, SANS, FOCUS, HRPT, TRICS or POLDI
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ldppc -o SinqHM_srv.o -r SinqHM_srv_main.o \
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SinqHM_srv_routines.o \
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SinqHM_srv_filler.o \
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SinqHM_srv_server.o
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** and, on the target,
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**
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** -> ld < /home/pss123/aco/maden/wind/SinqHM/SinqHM_srv.o
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** -> taskSpawn "SinqHM_srv", 100, 8, 20000, SinqHM_srv, <port>
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** ^
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** |
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** default = 2400 ------+
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**
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**====================================================================
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*/
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#include "vxWorks.h"
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#include "taskLib.h"
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#include "msgQLib.h"
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#include "sockLib.h"
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#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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#include <unistd.h>
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#include <errno.h>
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#include <netinet/in.h>
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#include <arpa/inet.h>
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#include <sys/types.h>
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#include <sys/socket.h>
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#include <setjmp.h>
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#include <time.h>
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#include <signal.h> /* Get POSIX signal definitions. */
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#include <timers.h>
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#include <sys/mman.h> /* Get POSIX mem mgmnt definitions. */
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#include <sys/wait.h> /* Get POSIX wait definitions. */
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/*
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**==================== Global Definitions =====================================
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*/
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#include "SinqHM_def.h"
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#include "SinqHM_gbl.h"
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/*
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**=============================================================================
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** Local routines.
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**
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** None
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*/
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/*==============================================================================
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** Main line program
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** ------------------
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**============================================================================*/
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int SinqHM_srv (int port, int use_level_gen, char *base_addr,
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int arg4, int arg5, int arg6, int arg7, int arg8, int arg9,
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int suspend) {
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/*============================================================================*/
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struct req_buff_struct req_buff;
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struct rply_buff_struct rply_buff;
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int i, j, is, status, cntr;
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int keep_going = OK;
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int bytes_to_come, n_bytes_got;
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char *p_addr;
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int cl_port;
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int do_send;
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int cnct_skt; /* Connection socket */
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int rw_skt; /* Read/write socket */
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struct sockaddr_in lcl_sockname;
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struct sockaddr_in rmt_sockname;
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int rmt_sockname_len;
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int pkt_size;
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time_t timer;
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sigset_t proc_sigmask;
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struct sigaction sig_action;
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/*============================================================================
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*/
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if (suspend != 0) {
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printf ("\nSinqHM_srv: Suspending ...\n");
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taskSuspend (0); /* We've been told to suspend ourself, ..
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** .. presumably for debug reasons.
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*/
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printf ("\nSinqHM_srv: Suspension ended!\n");
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}
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/*============================================================================
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** Perform the initialisation of global variables ...
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*/
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StrJoin (Instr_name, sizeof (Instr_name), INST, ""); /* Save the instr.
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** name in a global
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*/
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StrJoin (Def_ident, sizeof (Def_ident), SINQHM_DEF_ID, "");
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StrJoin (Sqhm_main_ident, sizeof (Sqhm_main_ident), IDENT, "");
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StrJoin (Sqhm_main_date, sizeof (Sqhm_main_date), __DATE__, ", ");
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StrJoin (Sqhm_main_date, sizeof (Sqhm_main_date), Sqhm_main_date, __TIME__);
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SinqHM_server_setup_id ();
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SinqHM_filler_setup_id ();
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SinqHM_routines_setup_id ();
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time (&Sqhm_start_time); /* Initialise the start time */
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StrJoin (Tsk_name[0], sizeof (Tsk_name[0]), taskName (get_pid ()), "");
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Dbg_mask = 0;
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Dbg_lev0 = 0;
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Dbg_lev1 = 0;
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Dbg_lev2 = 0;
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Dbg_lev3 = 0;
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Cfgn_done = 0; /* Force a configuration before we can do anything. */
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free_HM_memory (NULL); /* Release memory (possibly) in case ..
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** .. of a restart of the program */
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Parent_pid = get_pid ();
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Filler_pid = 0;
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for (i = 0; i <= MAX_CLIENTS; i++) {
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Child_pid[i] = 0;
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Child_exit_status[i] = 0;
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}
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if (Sem_Filler == NULL) {
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Sem_Filler = semBCreate (SEM_Q_FIFO, SEM_FULL);
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}
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if (Sem_Server == NULL) {
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Sem_Server = semBCreate (SEM_Q_FIFO, SEM_FULL);
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}
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/*
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** Debug hint - set Use_sem_tmo to zero to disable semaphore time-outs
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** during debug sessions. This will stop FILLER falling off.
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*/
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Sem_tmo = 10; /* 10 second time-out by default */
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Use_sem_tmo = 0;
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setupLevelGenerator (use_level_gen, base_addr);
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/*============================================================================
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** Clear the process signal mask to let in all signals (actually, on
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** PPC VxWorks this seems to cause all signals to get ignored!) and then
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** declare action routine for SIGUSR1. Our children signal with SIGUSR1
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** just before they exit in a more or less controlled manner. If the
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** child gets deleted from the shell, it will not signal.
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*/
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Cnt_SIGUSR1 = 0;
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status = sigemptyset (&proc_sigmask);
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status = sigprocmask (SIG_SETMASK, &proc_sigmask, NULL);
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status = sigemptyset (&sig_action.sa_mask);
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sig_action.sa_handler = catch_signal;
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sig_action.sa_flags = 0;
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if (sigaction (SIGUSR1, &sig_action, NULL) == -1) {
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getErrno (&My_errno);
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perror ("sigaction error:");
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exit (0);
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}
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/*============================================================================
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** Get a port number to use. If the argument "port" is not
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** a valid port number (not in range 128 to 32767), use PORT_BASE.
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*/
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Port_base = PORT_BASE;
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if ((port >= 128) && (port < 32768)) Port_base = port;
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/*============================================================================
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** Create a TCP/IP socket for receiving connection requests, bind it and
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** set it to listen.
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*/
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cnct_skt = socket (AF_INET, SOCK_STREAM, 0);
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if (cnct_skt == -1)
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failInet_port ("\nhmRoot%d -- Cnct-Socket socket error", Port_base);
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lcl_sockname.sin_family = AF_INET;
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lcl_sockname.sin_port = htons (Port_base);
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lcl_sockname.sin_addr.s_addr = 0;
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status = bind (cnct_skt, (struct sockaddr *) &lcl_sockname,
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sizeof (lcl_sockname));
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if (status != 0) failInet_port ("\nhmRoot%d -- Cnct-Socket bind error",
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Port_base);
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status = listen (cnct_skt, 5);
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if (status != 0) failInet_port ("\nhmRoot%d -- Cnct-Socket listen error",
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Port_base);
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/*
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** Clients must now connect to the Connect-port and send either a
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** connect, configure, deconfigure, status or exit request. A
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** successful configure request must precede any connection request.
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**
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** When a configure request arrives, the histogram data structures are
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** initialised, the histogram filler process (FILLER) is spawned and
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** connection requests are enabled. A status reply is sent to the
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** client and the connection closed.
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**
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** When a connection request arrives, a child will be spawned to
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** handle the connection. The child will be told which port to use
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** and he will release a semaphore when the port is ready. The parent
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** then sends the client a reply to tell him which port to use. The
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** connection is then closed to await further connections.
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*/
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setup_inet_info (Inet_host, sizeof (Inet_host), /* Find out who we are */
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Inet_addr, sizeof (Inet_addr));
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printf ("\n%s: Program Ident = \"%s\". Started on %s (%s).\n",
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Tsk_name[0], IDENT, Inet_host, Inet_addr);
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printf ("%s: Protocol Ident = \"%s\"\n", Tsk_name[0], SINQHM_DEF_ID);
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#ifndef INST
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#error Define the target instrument via the symbol "INST"!
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#endif
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if (strcmp (INST, "DMC") == 0) {
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printf ("%s: Instrument = \"%s\"\n", Tsk_name[0], "DMC");
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Lwl_hdr_daq_mask = LWL_HDR_NRL_MASK;
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Lwl_hdr_daq_soll = 0;
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}else if (strcmp (INST, "SANS") == 0) {
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printf ("%s: Instrument = \"%s\"\n", Tsk_name[0], "SANS");
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Lwl_hdr_daq_mask = LWL_HDR_NRL_MASK;
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Lwl_hdr_daq_soll = 0;
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}else if (strcmp (INST, "FOCUS") == 0) {
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Lwl_hdr_daq_mask = LWL_HDR_NRL_MASK | LWL_HDR_SYNC2_MASK;
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Lwl_hdr_daq_soll = 0;
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printf ("%s: Instrument = \"%s\"\n", Tsk_name[0], "FOCUS");
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}else if (strcmp (INST, "HRPT") == 0) {
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printf ("%s: Instrument = \"%s\"\n", Tsk_name[0], "HRPT");
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Lwl_hdr_daq_mask = LWL_HDR_SYNC0_MASK | LWL_HDR_SYNC2_MASK;
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Lwl_hdr_daq_soll = LWL_HDR_SYNC2_MASK;
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}else if (strcmp (INST, "TRICS") == 0) {
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printf ("%s: Instrument = \"%s\"\n", Tsk_name[0], "TriCS");
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Lwl_hdr_daq_mask = LWL_HDR_NRL_MASK;
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Lwl_hdr_daq_soll = 0;
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printf ("%s: Warning -- Lwl_hdr_daq_mask and Lwl_hdr_daq_soll are "
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"provisional!\n", Tsk_name[0]);
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}else if (strcmp (INST, "POLDI") == 0) {
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printf ("%s: Instrument = \"%s\"\n", Tsk_name[0], "POLDI");
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Lwl_hdr_daq_mask = LWL_HDR_NRL_MASK;
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Lwl_hdr_daq_soll = 0;
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printf ("%s: Warning -- Lwl_hdr_daq_mask and Lwl_hdr_daq_soll are "
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"provisional!\n", Tsk_name[0]);
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}else {
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printf ("%s: Instrument is not defined\n", Tsk_name[0]);
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Lwl_hdr_daq_mask = LWL_HDR_NRL_MASK;
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Lwl_hdr_daq_soll = 0;
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}
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printf ("%s: Lwl_hdr_daq_mask = 0x%08x", Tsk_name[0], Lwl_hdr_daq_mask);
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if ((Lwl_hdr_daq_mask & LWL_HDR_NRL_MASK) != 0) printf (" NRL");
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if ((Lwl_hdr_daq_mask & LWL_HDR_SYNC3_MASK) != 0) printf (" SYNC3");
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if ((Lwl_hdr_daq_mask & LWL_HDR_SYNC2_MASK) != 0) printf (" SYNC2");
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if ((Lwl_hdr_daq_mask & LWL_HDR_SYNC1_MASK) != 0) printf (" SYNC1");
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if ((Lwl_hdr_daq_mask & LWL_HDR_SYNC0_MASK) != 0) printf (" SYNC0");
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printf ("\n%s: Lwl_hdr_daq_soll = 0x%08x", Tsk_name[0], Lwl_hdr_daq_soll);
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if ((Lwl_hdr_daq_soll & LWL_HDR_NRL_MASK) != 0) printf (" NRL");
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if ((Lwl_hdr_daq_soll & LWL_HDR_SYNC3_MASK) != 0) printf (" SYNC3");
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if ((Lwl_hdr_daq_soll & LWL_HDR_SYNC2_MASK) != 0) printf (" SYNC2");
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if ((Lwl_hdr_daq_soll & LWL_HDR_SYNC1_MASK) != 0) printf (" SYNC1");
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if ((Lwl_hdr_daq_soll & LWL_HDR_SYNC0_MASK) != 0) printf (" SYNC0");
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printf ("\n");
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while (keep_going == OK) {
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rmt_sockname_len = sizeof (rmt_sockname);
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rw_skt = accept (cnct_skt, (struct sockaddr *) &rmt_sockname,
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&rmt_sockname_len);
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if (rw_skt == -1) {
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getErrno (&My_errno);
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failInet_port ("\nhmRoot%d -- Cnct-Socket accept error", Port_base);
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/* No return */
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}
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Rw_bytes_got = 0; Rw_bytes_put = 0;
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p_addr = inet_ntoa (rmt_sockname.sin_addr);
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cl_port = ntohs (rmt_sockname.sin_port);
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printf ("\n%s: Connected to Host %s, Port %d.\n",
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Tsk_name[0], p_addr, cl_port);
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bytes_to_come = sizeof (req_buff); /* Read a command */
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p_addr = (char *) &req_buff;
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while (bytes_to_come > 0) {
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n_bytes_got = recv (rw_skt, p_addr, bytes_to_come, 0);
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if (n_bytes_got <= 0) break;
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Rw_bytes_got += n_bytes_got;
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bytes_to_come -= n_bytes_got;
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p_addr += n_bytes_got;
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}
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if (Cnt_SIGUSR1 > 0) { /* Have any children exited? */
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if (Dbg_lev0) printf ("hmRoot%d: Cleaning up children ...", Port_base);
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cleanup_children (); /* Yes, update our database. */
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if (Dbg_lev0) printf ("\n ... cleanup of children done.\n");
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}
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if (n_bytes_got < 0) {
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printf ("\007"
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"%s -- R/W-Socket recv error\n", Tsk_name[0]);
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printf ("%s -- Connection to %s will be closed.\n", Tsk_name[0],
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inet_ntoa (rmt_sockname.sin_addr));
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}else if (n_bytes_got == 0) {
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printf ("\007"
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"%s -- no command received!\n", Tsk_name[0]);
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printf ("%s -- Connection to %s will be closed.\n", Tsk_name[0],
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inet_ntoa (rmt_sockname.sin_addr));
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}else if (n_bytes_got != sizeof (req_buff)) {
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printf ("\007"
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"%s -- command packet has wrong number of bytes:"
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" %d instead of %d\n", Tsk_name[0],
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n_bytes_got, sizeof (req_buff));
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printf ("%s -- Connection to %s will be closed.\n", Tsk_name[0],
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inet_ntoa (rmt_sockname.sin_addr));
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}else if (ntohl (req_buff.bigend) != 0x12345678) {
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printf ("\007"
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"%s -- big-endian/little-endian problem!\n"
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" Buffer received in non-network byte order!\n", Tsk_name[0]);
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}else {
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do_command (0, rw_skt, 4096, &req_buff, &rply_buff);
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}
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close (rw_skt);
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if (ntohl (req_buff.cmnd) == SQHM_EXIT) keep_going = !OK;
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}
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close (cnct_skt);
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exit (KER__SUCCESS);
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}
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/*========================================= End of SinqHM_srv_main.c ========*/
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