/* IBM_PROLOG_BEGIN_TAG */ /* This is an automatically generated prolog. */ /* */ /* gos720 src/gos/2d/XTOP/contrib/programs/xload/get_load.c 1.3 */ /* */ /* Licensed Materials - Property of IBM */ /* */ /* COPYRIGHT International Business Machines Corp. 1996,1998 */ /* All Rights Reserved */ /* */ /* US Government Users Restricted Rights - Use, duplication or */ /* disclosure restricted by GSA ADP Schedule Contract with IBM Corp. */ /* */ /* IBM_PROLOG_END_TAG */ /* SCCSID_BEGIN_TAG */ #ifndef lint static char sccsid[] = "@(#)71 1.3 src/gos/2d/XTOP/contrib/programs/xload/get_load.c, xsample, gos720 8/11/98 10:57:24"; #endif /* SCCSID_END_TAG */ /* $XConsortium: get_load.c,v 1.35 94/04/17 20:43:43 rws Exp $ */ /* Copyright (c) 1989 X Consortium 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 THE X CONSORTIUM 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 the X Consortium shall not be used in advertising or otherwise to promote the sale, use or other dealings in this Software without prior written authorization from the X Consortium. */ /* * get_load - get system load * * Authors: Many and varied... * * Call InitLoadPoint() to initialize. * GetLoadPoint() is a callback for the StripChart widget. */ #include #include #include #ifdef att #define LOADSTUB #endif #ifndef macII #ifndef apollo #ifndef LOADSTUB #include #endif /* LOADSTUB */ #endif /* apollo */ #endif /* macII */ #if defined(MOTOROLA) && defined(SYSV) #include #endif #ifdef sun # include # ifdef i386 # include # define KVM_ROUTINES # endif /* i386 */ #endif #if defined(umips) || (defined(ultrix) && defined(mips)) #include #endif #if defined(CRAY) || defined(AIXV3) #include #define word word_t #include #undef word #undef n_type #define n_type n_value #endif /* CRAY */ #ifdef sequent #include #endif /* sequent */ #ifdef macII #include #include #define X_AVENRUN 0 #define fxtod(i) (vec[i].high+(vec[i].low/65536.0)) struct lavnum { unsigned short high; unsigned short low; }; #endif /* macII */ #ifdef AIXV3 #define FSHIFT 16 #define FSCALE (1< #endif /* hcx */ #if defined(UTEK) || defined(alliant) || (defined(MOTOROLA) && defined(SVR4)) #define FSCALE 100.0 #endif #ifdef sequent #define FSCALE 1000.0 #endif #ifdef sgi #define FSCALE 1024.0 #endif #if defined(sony) && OSMAJORVERSION == 4 #ifdef mips #include #else #include #endif #endif #ifdef __osf__ /* * Use the table(2) interface; it doesn't require setuid root. * * Select 0, 1, or 2 for 5, 30, or 60 second load averages. */ #ifndef WHICH_AVG #define WHICH_AVG 1 #endif #include #endif #ifdef SVR4 #ifndef FSCALE #define FSCALE (1 << 8) #endif #endif #ifdef X_NOT_POSIX extern long lseek(); #endif extern void exit(); static xload_error(); #ifdef apollo #include #include typedef struct { short state; /* ready, waiting, etc. */ pinteger usr; /* user sr */ linteger upc; /* user pc */ linteger usp; /* user stack pointer */ linteger usb; /* user sb ptr (A6) */ time_$clock_t cpu_total; /* cumulative cpu used by process */ unsigned short priority; /* process priority */ } proc1_$info_t; void proc1_$get_cput( time_$clock_t *cput ); void proc1_$get_info( short &pid, proc1_$info_t *info, status_$t *sts ); static int lastNullCpu; static int lastClock; void InitLoadPoint() /* Apollo version */ { time_$clock_t timeNow; proc1_$info_t info; status_$t st; proc1_$get_info( (short) 2, &info, &st ); time_$clock( &timeNow ); lastClock = timeNow.low32; lastNullCpu = info.cpu_total.low32; } /* ARGSUSED */ void GetLoadPoint( w, closure, call_data ) /* Apollo version */ Widget w; /* unused */ caddr_t closure; /* unused */ caddr_t call_data; /* pointer to (double) return value */ { time_$clock_t timeNow; double temp; proc1_$info_t info; status_$t st; proc1_$get_info( (short) 2, &info, &st ); time_$clock( &timeNow ); temp = info.cpu_total.low32 - lastNullCpu; *(double *)call_data = 1.0 - temp / (timeNow.low32 - lastClock); lastClock = timeNow.low32; lastNullCpu = info.cpu_total.low32; } #else /* not apollo */ #if defined(SYSV) && defined(SYSV386) /* * inspired by 'avgload' by John F. Haugh II */ #include #include #include #include #include #include #define KERNEL_FILE "/unix" #define KMEM_FILE "/dev/kmem" #define VAR_NAME "v" #define PROC_NAME "proc" #define BUF_NAME "buf" #define DECAY 0.8 struct nlist namelist[] = { {VAR_NAME}, {PROC_NAME}, {BUF_NAME}, {0}, }; static int kmem; static struct var v; static struct proc *p; static caddr_t first_buf, last_buf; void InitLoadPoint() /* SYSV386 version */ { int i; nlist( KERNEL_FILE, namelist); for (i=0; namelist[i].n_name; i++) if (namelist[i].n_value == 0) xload_error("cannot get name list from", KERNEL_FILE); if ((kmem = open(KMEM_FILE, O_RDONLY)) < 0) xload_error("cannot open", KMEM_FILE); if (lseek(kmem, namelist[0].n_value, 0) == -1) xload_error("cannot seek", VAR_NAME); if (read(kmem, &v, sizeof(v)) != sizeof(v)) xload_error("cannot read", VAR_NAME); if ((p=(struct proc *)malloc(v.v_proc*sizeof(*p))) == NULL) xload_error("cannot allocat space for", PROC_NAME); first_buf = (caddr_t) namelist[2].n_value; last_buf = first_buf + v.v_buf * sizeof(struct buf); } /* ARGSUSED */ void GetLoadPoint( w, closure, call_data ) /* SYSV386 version */ Widget w; /* unused */ caddr_t closure; /* unused */ caddr_t call_data; /* pointer to (double) return value */ { double *loadavg = (double *)call_data; static double avenrun = 0.0; int i, nproc, size; (void) lseek(kmem, namelist[0].n_value, 0); (void) read(kmem, &v, sizeof(v)); size = (struct proc *)v.ve_proc - (struct proc *)namelist[1].n_value; (void) lseek(kmem, namelist[1].n_value, 0); (void) read(kmem, p, size * sizeof(struct proc)); for (nproc = 0, i=0; i= first_buf) && (p[i].p_wchan < last_buf))) nproc++; /* update the load average using a decay filter */ avenrun = DECAY * avenrun + nproc * (1.0 - DECAY); *loadavg = avenrun; return; } #else /* not (SYSV && SYSV386) */ #ifdef KVM_ROUTINES /* * Sun 386i Code - abstracted to see the wood for the trees */ static struct nlist nl[2]; static kvm_t *kd; void InitLoadPoint() /* Sun 386i version */ { kd = kvm_open("/vmunix", NULL, NULL, O_RDONLY, "Load Widget"); if (kd == (kvm_t *)0) { xload_error("cannot get access to kernel address space"); } nl[0].n_name = "avenrun"; nl[1].n_name = NULL; if (kvm_nlist(kd, nl) != 0) { xload_error("cannot get name list"); } if (nl[0].n_value == 0) { xload_error("Cannot find address for avenrun in the kernel\n"); } } /* ARGSUSED */ void GetLoadPoint( w, closure, call_data ) /* Sun 386i version */ Widget w; /* unused */ XtPointer closure; /* unused */ XtPointer call_data; /* pointer to (double) return value */ { double *loadavg = (double *)call_data; long temp; if (kvm_read(kd, nl[0].n_value, (char *)&temp, sizeof (temp)) != sizeof (temp)) { xload_error("Kernel read error"); } *loadavg = (double)temp/FSCALE; } #else /* not KVM_ROUTINES */ #ifdef LOADSTUB void InitLoadPoint() { } /* ARGSUSED */ void GetLoadPoint( w, closure, call_data ) Widget w; /* unused */ caddr_t closure; /* unused */ caddr_t call_data; /* pointer to (double) return value */ { *(double *)call_data = 1.0; } #else /* not LOADSTUB */ #ifdef __osf__ void InitLoadPoint() { } /*ARGSUSED*/ void GetLoadPoint( w, closure, call_data ) Widget w; /* unused */ caddr_t closure; /* unused */ caddr_t call_data; /* pointer to (double) return value */ { double *loadavg = (double *)call_data; struct tbl_loadavg load_data; if (table(TBL_LOADAVG, 0, (char *)&load_data, 1, sizeof(load_data)) < 0) xload_error("error reading load average", ""); *loadavg = (load_data.tl_lscale == 0) ? load_data.tl_avenrun.d[WHICH_AVG] : load_data.tl_avenrun.l[WHICH_AVG] / (double)load_data.tl_lscale; } #else /* not __osf__ */ #ifdef __bsdi__ #include static struct nlist nl[] = { { "_averunnable" }, #define X_AVERUNNABLE 0 { "_fscale" }, #define X_FSCALE 1 { "" }, }; static kvm_t *kd; static int fscale; void InitLoadPoint() { fixpt_t averunnable[3]; /* unused really */ if ((kd = kvm_openfiles(NULL, NULL, NULL, O_RDONLY, NULL)) == NULL) xload_error("can't open kvm files"); if (kvm_nlist(kd, nl) != 0) xload_error("can't read name list"); if (kvm_read(kd, (off_t)nl[X_AVERUNNABLE].n_value, (char *)averunnable, sizeof(averunnable)) != sizeof(averunnable)) xload_error("couldn't obtain _averunnable variable"); if (kvm_read(kd, (off_t)nl[X_FSCALE].n_value, (char *)&fscale, sizeof(fscale)) != sizeof(fscale)) xload_error("couldn't obtain _fscale variable"); return; } void GetLoadPoint(w, closure, call_data) Widget w; /* unused */ caddr_t closure; /* unused */ caddr_t call_data; /* ptr to (double) return value */ { double *loadavg = (double *)call_data; fixpt_t t; if (kvm_read(kd, (off_t)nl[X_AVERUNNABLE].n_value, (char *)&t, sizeof(t)) != sizeof(t)) xload_error("couldn't obtain load average"); *loadavg = (double)t/fscale; return; } #else #ifndef KMEM_FILE #define KMEM_FILE "/dev/kmem" #endif #ifndef KERNEL_FILE #ifdef alliant #define KERNEL_FILE "/vmunix" #endif /* alliant */ #ifdef CRAY #define KERNEL_FILE "/unicos" #endif /* CRAY */ #ifdef hpux #define KERNEL_FILE "/hp-ux" #endif /* hpux */ #ifdef macII #define KERNEL_FILE "/unix" #endif /* macII */ #ifdef umips # ifdef SYSTYPE_SYSV # define KERNEL_FILE "/unix" # else # define KERNEL_FILE "/vmunix" # endif /* SYSTYPE_SYSV */ #endif /* umips */ #ifdef sequent #define KERNEL_FILE "/dynix" #endif /* sequent */ #ifdef hcx #define KERNEL_FILE "/unix" #endif /* hcx */ #ifdef MOTOROLA #if defined(SYSV) && defined(m68k) #define KERNEL_FILE "/sysV68" #endif #if defined(SYSV) && defined(m88k) #define KERNEL_FILE "/unix" #endif #ifdef SVR4 #define KERNEL_FILE "/unix" #endif #endif /* MOTOROLA */ #if defined(sun) && defined(SVR4) #define KERNEL_FILE "/kernel/unix" #endif /* * provide default for everyone else */ #ifndef KERNEL_FILE #ifdef SVR4 #define KERNEL_FILE "/stand/unix" #else #ifdef SYSV #define KERNEL_FILE "/unix" #else #define KERNEL_FILE "/vmunix" #endif /* SYSV */ #endif /* SVR4 */ #endif /* KERNEL_FILE */ #endif /* KERNEL_FILE */ #ifndef KERNEL_LOAD_VARIABLE # ifdef alliant # define KERNEL_LOAD_VARIABLE "_Loadavg" # endif /* alliant */ # ifdef CRAY # if defined(CRAY2) && OSMAJORVERSION == 4 # define KERNEL_LOAD_VARIABLE "avenrun" # else # define KERNEL_LOAD_VARIABLE "sysinfo" # define SYSINFO # endif /* defined(CRAY2) && OSMAJORVERSION == 4 */ # endif /* CRAY */ # ifdef hpux # ifdef __hp9000s800 # define KERNEL_LOAD_VARIABLE "avenrun" # endif /* hp9000s800 */ # endif /* hpux */ # ifdef umips # ifdef SYSTYPE_SYSV # define KERNEL_LOAD_VARIABLE "avenrun" # else # define KERNEL_LOAD_VARIABLE "_avenrun" # endif /* SYSTYPE_SYSV */ # endif /* umips */ # ifdef sgi # define KERNEL_LOAD_VARIABLE "avenrun" # endif /* sgi */ # ifdef AIXV3 # define KERNEL_LOAD_VARIABLE "avenrun" # endif /* AIXV3 */ # ifdef MOTOROLA # if defined(SYSV) && defined(m68k) # define KERNEL_LOAD_VARIABLE "sysinfo" # endif # if defined(SYSV) && defined(m88k) # define KERNEL_LOAD_VARIABLE "_sysinfo" # endif # ifdef SVR4 # define KERNEL_LOAD_VARIABLE "avenrun" # endif # endif /* MOTOROLA */ #endif /* KERNEL_LOAD_VARIABLE */ /* * provide default for everyone else */ #ifndef KERNEL_LOAD_VARIABLE # ifdef USG # define KERNEL_LOAD_VARIABLE "sysinfo" # define SYSINFO # else # ifdef SVR4 # define KERNEL_LOAD_VARIABLE "avenrun" # else # define KERNEL_LOAD_VARIABLE "_avenrun" # endif # endif #endif /* KERNEL_LOAD_VARIABLE */ #ifdef macII static struct var v; static int pad[2]; /* This padding is needed if xload compiled on */ /* a/ux 1.1 is executed on a/ux 1.0, because */ /* the var structure had too much padding in 1.0, */ /* so the 1.0 kernel writes past the end of the 1.1 */ /* var structure in the uvar() call. */ static struct nlist nl[2]; static struct lavnum vec[3]; #else /* not macII */ static struct nlist namelist[] = { /* namelist for vmunix grubbing */ #define LOADAV 0 {KERNEL_LOAD_VARIABLE}, {0} }; #endif /* macII */ static kmem; static long loadavg_seek; InitLoadPoint() { #ifdef macII extern nlist(); int i; strcpy(nl[0].n_name, "avenrun"); nl[1].n_name[0] = '\0'; kmem = open(KMEM_FILE, O_RDONLY); if (kmem < 0) { xload_error("cannot open", KMEM_FILE); } uvar(&v); if (nlist( KERNEL_FILE, nl) != 0) { xload_error("cannot get name list from", KERNEL_FILE); } for (i = 0; i < 2; i++) { nl[i].n_value = (int)nl[i].n_value - v.v_kvoffset; } #else /* not macII */ #if (!defined(SVR4) || !defined(__STDC__)) && !defined(sgi) && !defined(MOTOROLA) && !defined(AIXV3) /*extern void nlist();*/ #endif #ifdef AIXV3 knlist( namelist, 1, sizeof(struct nlist)); #else nlist( KERNEL_FILE, namelist); #endif /* * Some systems appear to set only one of these to Zero if the entry could * not be found, I hope no_one returns Zero as a good value, or bad things * will happen to you. (I have a hard time believing the value will * ever really be zero anyway). CDP 5/17/89. */ #ifdef hcx if (namelist[LOADAV].n_type == 0 && #else if (namelist[LOADAV].n_type == 0 || #endif /* hcx */ namelist[LOADAV].n_value == 0) { xload_error("cannot get name list from", KERNEL_FILE); exit(-1); } loadavg_seek = namelist[LOADAV].n_value; #if defined(umips) && defined(SYSTYPE_SYSV) loadavg_seek &= 0x7fffffff; #endif /* umips && SYSTYPE_SYSV */ #if (defined(CRAY) && defined(SYSINFO)) loadavg_seek += ((char *) (((struct sysinfo *)NULL)->avenrun)) - ((char *) NULL); #endif /* CRAY && SYSINFO */ kmem = open(KMEM_FILE, O_RDONLY); if (kmem < 0) xload_error("cannot open", KMEM_FILE); #endif /* macII else */ } /* ARGSUSED */ void GetLoadPoint( w, closure, call_data ) Widget w; /* unused */ caddr_t closure; /* unused */ caddr_t call_data; /* pointer to (double) return value */ { double *loadavg = (double *)call_data; #ifdef macII lseek(kmem, (long)nl[X_AVENRUN].n_value, 0); #else (void) lseek(kmem, loadavg_seek, 0); #endif #if defined(sun) || defined (UTEK) || defined(sequent) || defined(alliant) || defined(SVR4) || defined(sgi) || defined(hcx) { long temp; (void) read(kmem, (char *)&temp, sizeof(long)); *loadavg = (double)temp/FSCALE; } #else /* else not sun or UTEK or sequent or alliant or SVR4 or sgi or hcx */ # ifdef macII { read(kmem, vec, 3*sizeof(struct lavnum)); *loadavg = fxtod(0); } # else /* else not macII */ # if defined(umips) || (defined(ultrix) && defined(mips)) { fix temp; (void) read(kmem, (char *)&temp, sizeof(fix)); *loadavg = FIX_TO_DBL(temp); } # else /* not umips or ultrix risc */ # ifdef AIXV3 { static firsttime = TRUE; static unsigned long avenrun = 0; (void) lseek(kmem, loadavg_seek, 0); (void) read(kmem, (char *)&avenrun, sizeof(avenrun)); if (firsttime) { *loadavg = 0.0; firsttime = FALSE; } else { sleep(1); (void) lseek(kmem, loadavg_seek, 0); (void) read(kmem, (char *)&avenrun, sizeof(avenrun)); *loadavg = (double)avenrun/FSCALE; } /* otherwise we leave load alone. */ } # else /* not AIXV3 */ # if defined(MOTOROLA) && defined(SYSV) { static int init = 0; static kmem; static long loadavg_seek; static xload_error(); #define CEXP 0.25 /* Constant used for load averaging */ struct sysinfo sysinfod; static double oldloadavg; static double cexp = CEXP; static long sv_rq, sv_oc; /* save old values */ double rq, oc; /* amount values have changed */ if (!init) { if (nlist(KERNEL_FILE,namelist) == -1) { perror("xload: nlist()"); xload_error("cannot get name list from", KERNEL_FILE); } loadavg_seek = namelist[0].n_value; kmem = open(KMEM_FILE, O_RDONLY); if (kmem < 0) { perror("xload: open()"); xload_error("cannot open", KMEM_FILE); } } lseek(kmem, loadavg_seek, 0); if (read(kmem, &sysinfod, (int) sizeof (struct sysinfo)) == -1) { perror("xload: read() SYSINFONL"); xload_error("read failed from", KMEM_FILE); } if (!init) { init = 1; sv_rq = sysinfod.runque; sv_oc = sysinfod.runocc; oldloadavg = *loadavg = 0.0; return; } /* * calculate the amount the values have * changed since last update */ rq = (double) sysinfod.runque - sv_rq; oc = (double) sysinfod.runocc - sv_oc; /* * save old values for next time */ sv_rq = sysinfod.runque; sv_oc = sysinfod.runocc; if (oc == 0.0) /* avoid divide by zero */ { *loadavg = (1.0 - cexp) * oldloadavg; } else { *loadavg = ((1.0 - cexp) * oldloadavg) + ((rq / oc) * cexp); } oldloadavg = *loadavg; } # else /* not MOTOROLA */ # if defined(sony) && OSMAJORVERSION == 4 # ifdef mips { fix temp; (void) read(kmem, (char *)&temp, sizeof(fix)); *loadavg = FIX_TO_DBL(temp); } # else /* not mips */ { long temp; (void) read(kmem, (char *)&temp, sizeof(long)); *loadavg = (double)temp/FSCALE; } # endif /* mips */ # else /* not sony NEWSOS4 */ (void) read(kmem, (char *)loadavg, sizeof(double)); # endif /* sony NEWOS4 */ # endif /* MOTOROLA else */ # endif /* AIXV3 else */ # endif /* umips else */ # endif /* macII else */ #endif /* sun else */ return; } #endif /* bsdi else */ #endif /* __osf__ else */ #endif /* LOADSTUB else */ #endif /* KVM_ROUTINES else */ #endif /* SYSV && SYSV386 else */ static xload_error(str1, str2) char *str1, *str2; { (void) fprintf(stderr,"xload: %s %s\n", str1, str2); #ifdef __bsdi__ if (kd) kvm_close(kd); #endif exit(-1); } #endif /* apollo else */