diff options
Diffstat (limited to 'contrib/ntp/util/sht.c')
| -rw-r--r-- | contrib/ntp/util/sht.c | 185 |
1 files changed, 0 insertions, 185 deletions
diff --git a/contrib/ntp/util/sht.c b/contrib/ntp/util/sht.c deleted file mode 100644 index b993de9..0000000 --- a/contrib/ntp/util/sht.c +++ /dev/null @@ -1,185 +0,0 @@ -/* - * sht.c - Testprogram for shared memory refclock - * read/write shared memory segment; see usage - */ -#ifndef SYS_WINNT -#include <sys/types.h> -#include <sys/ipc.h> -#include <sys/shm.h> -#include <stdio.h> -#include <time.h> -#include <unistd.h> -#include <stdlib.h> -#else -#include <windows.h> -#include <time.h> -#include <stdlib.h> -#include <stdio.h> -#include <iostream.h> -#define sleep(x) Sleep(x*1000) -#endif -#include <assert.h> -struct shmTime { - int mode; /* 0 - if valid set - * use values, - * clear valid - * 1 - if valid set - * if count before and after read of values is equal, - * use values - * clear valid - */ - int count; - time_t clockTimeStampSec; - int clockTimeStampUSec; - time_t receiveTimeStampSec; - int receiveTimeStampUSec; - int leap; - int precision; - int nsamples; - int valid; -}; - -struct shmTime * -getShmTime ( - int unit - ) -{ -#ifndef SYS_WINNT - int shmid=shmget (0x4e545030+unit, sizeof (struct shmTime), IPC_CREAT|0777); - if (shmid==-1) { - perror ("shmget"); - exit (1); - } - else { - struct shmTime *p=(struct shmTime *)shmat (shmid, 0, 0); - if ((int)(long)p==-1) { - perror ("shmat"); - p=0; - } - assert (p!=0); - return p; - } -#else - char buf[10]; - LPSECURITY_ATTRIBUTES psec=0; - sprintf (buf,"NTP%d",unit); - SECURITY_DESCRIPTOR sd; - SECURITY_ATTRIBUTES sa; - HANDLE shmid; - - assert (InitializeSecurityDescriptor(&sd, SECURITY_DESCRIPTOR_REVISION)); - assert (SetSecurityDescriptorDacl(&sd,1,0,0)); - sa.nLength=sizeof (SECURITY_ATTRIBUTES); - sa.lpSecurityDescriptor=&sd; - sa.bInheritHandle=0; - shmid=CreateFileMapping ((HANDLE)0xffffffff, 0, PAGE_READWRITE, - psec, sizeof (struct shmTime),buf); - if (!shmid) { - shmid=CreateFileMapping ((HANDLE)0xffffffff, 0, PAGE_READWRITE, - 0, sizeof (struct shmTime),buf); - cout <<"CreateFileMapping with psec!=0 failed"<<endl; - } - - if (!shmid) { - char mbuf[1000]; - FormatMessage (FORMAT_MESSAGE_FROM_SYSTEM, - 0, GetLastError (), 0, mbuf, sizeof (mbuf), 0); - int x=GetLastError (); - cout <<"CreateFileMapping "<<buf<<":"<<mbuf<<endl; - exit (1); - } - else { - struct shmTime *p=(struct shmTime *) MapViewOfFile (shmid, - FILE_MAP_WRITE, 0, 0, sizeof (struct shmTime)); - if (p==0) { - char mbuf[1000]; - FormatMessage (FORMAT_MESSAGE_FROM_SYSTEM, - 0, GetLastError (), 0, mbuf, sizeof (mbuf), 0); - cout <<"MapViewOfFile "<<buf<<":"<<mbuf<<endl; - exit (1); - } - return p; - } - return 0; -#endif -} - - -int -main ( - int argc, - char *argv[] - ) -{ - volatile struct shmTime *p=getShmTime(2); - if (argc<=1) { - printf ("usage: %s r[c][l]|w|snnn\n",argv[0]); - printf (" r read shared memory\n"); - printf (" c clear valid-flag\n"); - printf (" l loop (so, rcl will read and clear in a loop\n"); - printf (" w write shared memory with current time\n"); - printf (" snnnn set nsamples to nnn\n"); - printf (" lnnnn set leap to nnn\n"); - printf (" pnnnn set precision to -nnn\n"); - exit (0); - } - switch (argv[1][0]) { - case 's': { - p->nsamples=atoi(&argv[1][1]); - } - break; - case 'l': { - p->leap=atoi(&argv[1][1]); - } - break; - case 'p': { - p->precision=-atoi(&argv[1][1]); - } - break; - case 'r': { - char *ap=&argv[1][1]; - int clear=0; - int loop=0; - printf ("reader\n"); - while (*ap) { - switch (*ap) { - case 'l' : loop=1; break; - case 'c' : clear=1; break; - } - ap++; - } - do { - printf ("mode=%d, count=%d, clock=%d.%d, rec=%d.%d,\n", - p->mode,p->count,p->clockTimeStampSec,p->clockTimeStampUSec, - p->receiveTimeStampSec,p->receiveTimeStampUSec); - printf (" leap=%d, precision=%d, nsamples=%d, valid=%d\n", - p->leap, p->precision, p->nsamples, p->valid); - if (!p->valid) - printf ("***\n"); - if (clear) { - p->valid=0; - printf ("cleared\n"); - } - if (loop) - sleep (1); - } while (loop); - } - break; - case 'w': { - printf ("writer\n"); - p->mode=0; - if (!p->valid) { - p->clockTimeStampSec=time(0)-20; - p->clockTimeStampUSec=0; - p->receiveTimeStampSec=time(0)-1; - p->receiveTimeStampUSec=0; - printf ("%d %d\n",p->clockTimeStampSec, p->receiveTimeStampSec); - p->valid=1; - } - else { - printf ("p->valid still set\n"); /* not an error! */ - } - } - break; - } -} |
