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Diffstat (limited to 'ksysguard/ksysguardd/NetBSD/CPU.c')
| -rw-r--r-- | ksysguard/ksysguardd/NetBSD/CPU.c | 206 |
1 files changed, 206 insertions, 0 deletions
diff --git a/ksysguard/ksysguardd/NetBSD/CPU.c b/ksysguard/ksysguardd/NetBSD/CPU.c new file mode 100644 index 000000000..959924087 --- /dev/null +++ b/ksysguard/ksysguardd/NetBSD/CPU.c @@ -0,0 +1,206 @@ +/* + KSysGuard, the KDE System Guard + + Copyright (c) 1999 Chris Schlaeger <cs@kde.org> + + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 2 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program; if not, write to the Free Software + Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + +*/ + +#include <sys/dkstat.h> +#include <sys/sched.h> /* CPUSTATES */ +#include <fcntl.h> +#include <kvm.h> +#include <nlist.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <sys/types.h> + +#include "CPU.h" +#include "Command.h" +#include "ksysguardd.h" + +long percentages(int cnt, int *out, long *new, long *old, long *diffs); + +struct nlist my_nlist[] = { + {"_cp_time"}, + { 0 } +}; + +kvm_t *kd; + +unsigned long cp_time_offset; + +long cp_time[CPUSTATES]; +long cp_old[CPUSTATES]; +long cp_diff[CPUSTATES]; +int cpu_states[CPUSTATES]; + +void +initCpuInfo(struct SensorModul* sm) +{ + /* Total CPU load */ + registerMonitor("cpu/user", "integer", printCPUUser, + printCPUUserInfo, sm); + registerMonitor("cpu/nice", "integer", printCPUNice, + printCPUNiceInfo, sm); + registerMonitor("cpu/sys", "integer", printCPUSys, + printCPUSysInfo, sm); + registerMonitor("cpu/idle", "integer", printCPUIdle, + printCPUIdleInfo, sm); + kd = kvm_open(NULL, NULL, NULL, O_RDONLY, "kvm_open"); + kvm_nlist(kd, my_nlist); + cp_time_offset = my_nlist[0].n_value; + + updateCpuInfo(); +} + +void +exitCpuInfo(void) +{ + kvm_close(kd); +} + +int +updateCpuInfo(void) +{ + kvm_read(kd, cp_time_offset, (char *)cp_time, sizeof(cp_time)); + percentages(CPUSTATES, cpu_states, cp_time, cp_old, cp_diff); + return (0); +} + +void +printCPUUser(const char* cmd) +{ + fprintf(CurrentClient, "%d\n", cpu_states[CP_USER]/10); +} + +void +printCPUUserInfo(const char* cmd) +{ + fprintf(CurrentClient, "CPU User Load\t0\t100\t%%\n"); +} + +void +printCPUNice(const char* cmd) +{ + fprintf(CurrentClient, "%d\n", cpu_states[CP_NICE]/10); +} + +void +printCPUNiceInfo(const char* cmd) +{ + fprintf(CurrentClient, "CPU Nice Load\t0\t100\t%%\n"); +} + +void +printCPUSys(const char* cmd) +{ + fprintf(CurrentClient, "%d\n", cpu_states[CP_SYS]/10); +} + +void +printCPUSysInfo(const char* cmd) +{ + fprintf(CurrentClient, "CPU System Load\t0\t100\t%%\n"); +} + +void +printCPUIdle(const char* cmd) +{ + fprintf(CurrentClient, "%d\n", cpu_states[CP_IDLE]/10); +} + +void +printCPUIdleInfo(const char* cmd) +{ + fprintf(CurrentClient, "CPU Idle Load\t0\t100\t%%\n"); +} + + +/* The part ripped from top... */ +/* + * Top users/processes display for Unix + * Version 3 + * + * This program may be freely redistributed, + * but this entire comment MUST remain intact. + * + * Copyright (c) 1984, 1989, William LeFebvre, Rice University + * Copyright (c) 1989, 1990, 1992, William LeFebvre, Northwestern University + */ + +/* + * percentages(cnt, out, new, old, diffs) - calculate percentage change + * between array "old" and "new", putting the percentages i "out". + * "cnt" is size of each array and "diffs" is used for scratch space. + * The array "old" is updated on each call. + * The routine assumes modulo arithmetic. This function is especially + * useful on BSD mchines for calculating cpu state percentages. + */ + +long percentages(cnt, out, new, old, diffs) + +int cnt; +int *out; +register long *new; +register long *old; +long *diffs; + +{ + register int i; + register long change; + register long total_change; + register long *dp; + long half_total; + + /* initialization */ + total_change = 0; + dp = diffs; + + /* calculate changes for each state and the overall change */ + for (i = 0; i < cnt; i++) + { + if ((change = *new - *old) < 0) + { + /* this only happens when the counter wraps */ + change = (int) + ((unsigned long)*new-(unsigned long)*old); + } + total_change += (*dp++ = change); + *old++ = *new++; + } + + /* avoid divide by zero potential */ + if (total_change == 0) + { + total_change = 1; + } + + /* calculate percentages based on overall change, rounding up */ + half_total = total_change / 2l; + + /* Do not divide by 0. Causes Floating point exception */ + if(total_change) { + for (i = 0; i < cnt; i++) + { + *out++ = (int)((*diffs++ * 1000 + half_total) / total_change); + } + } + + /* return the total in case the caller wants to use it */ + return(total_change); +} |