--- a/jdk/src/java.management/unix/native/libmanagement/SolarisOperatingSystem.c Wed Jul 05 20:31:05 2017 +0200
+++ /dev/null Thu Jan 01 00:00:00 1970 +0000
@@ -1,241 +0,0 @@
-/*
- * Copyright (c) 2011, 2013, Oracle and/or its affiliates. All rights reserved.
- * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
- *
- * This code is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License version 2 only, as
- * published by the Free Software Foundation. Oracle designates this
- * particular file as subject to the "Classpath" exception as provided
- * by Oracle in the LICENSE file that accompanied this code.
- *
- * This code 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
- * version 2 for more details (a copy is included in the LICENSE file that
- * accompanied this code).
- *
- * You should have received a copy of the GNU General Public License version
- * 2 along with this work; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
- *
- * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
- * or visit www.oracle.com if you need additional information or have any
- * questions.
- */
-
-#include <fcntl.h>
-#include <kstat.h>
-#include <procfs.h>
-#include <unistd.h>
-#include <stdlib.h>
-#include <stdio.h>
-#include <string.h>
-#include <sys/sysinfo.h>
-#include <sys/lwp.h>
-#include <pthread.h>
-#include <utmpx.h>
-#include <dlfcn.h>
-#include <sys/loadavg.h>
-#include <jni.h>
-#include "jvm.h"
-#include "sun_management_OperatingSystemImpl.h"
-
-typedef struct {
- kstat_t *kstat;
- uint64_t last_idle;
- uint64_t last_total;
- double last_ratio;
-} cpuload_t;
-
-static cpuload_t *cpu_loads = NULL;
-static unsigned int num_cpus;
-static kstat_ctl_t *kstat_ctrl = NULL;
-
-static void map_cpu_kstat_counters() {
- kstat_t *kstat;
- int i;
-
- // Get number of CPU(s)
- if ((num_cpus = sysconf(_SC_NPROCESSORS_ONLN)) == -1) {
- num_cpus = 1;
- }
-
- // Data structure for saving CPU load
- if ((cpu_loads = calloc(num_cpus,sizeof(cpuload_t))) == NULL) {
- return;
- }
-
- // Get kstat cpu_stat counters for every CPU
- // (loop over kstat to find our cpu_stat(s)
- i = 0;
- for (kstat = kstat_ctrl->kc_chain; kstat != NULL; kstat = kstat->ks_next) {
- if (strncmp(kstat->ks_module, "cpu_stat", 8) == 0) {
-
- if (kstat_read(kstat_ctrl, kstat, NULL) == -1) {
- // Failed to initialize kstat for this CPU so ignore it
- continue;
- }
-
- if (i == num_cpus) {
- // Found more cpu_stats than reported CPUs
- break;
- }
-
- cpu_loads[i++].kstat = kstat;
- }
- }
-}
-
-static int init_cpu_kstat_counters() {
- static int initialized = 0;
-
- // Concurrence in this method is prevented by the lock in
- // the calling method get_cpu_load();
- if(!initialized) {
- if ((kstat_ctrl = kstat_open()) != NULL) {
- map_cpu_kstat_counters();
- initialized = 1;
- }
- }
- return initialized ? 0 : -1;
-}
-
-static void update_cpu_kstat_counters() {
- if(kstat_chain_update(kstat_ctrl) != 0) {
- free(cpu_loads);
- map_cpu_kstat_counters();
- }
-}
-
-int read_cpustat(cpuload_t *load, cpu_stat_t *cpu_stat) {
- if (load->kstat == NULL) {
- // no handle.
- return -1;
- }
- if (kstat_read(kstat_ctrl, load->kstat, cpu_stat) == -1) {
- // disabling for now, a kstat chain update is likely to happen next time
- load->kstat = NULL;
- return -1;
- }
- return 0;
-}
-
-double get_single_cpu_load(unsigned int n) {
- cpuload_t *load;
- cpu_stat_t cpu_stat;
- uint_t *usage;
- uint64_t c_idle;
- uint64_t c_total;
- uint64_t d_idle;
- uint64_t d_total;
- int i;
-
- if (n >= num_cpus) {
- return -1.0;
- }
-
- load = &cpu_loads[n];
- if (read_cpustat(load, &cpu_stat) < 0) {
- return -1.0;
- }
-
- usage = cpu_stat.cpu_sysinfo.cpu;
- c_idle = usage[CPU_IDLE];
-
- for (c_total = 0, i = 0; i < CPU_STATES; i++) {
- c_total += usage[i];
- }
-
- // Calculate diff against previous snapshot
- d_idle = c_idle - load->last_idle;
- d_total = c_total - load->last_total;
-
- /** update if weve moved */
- if (d_total > 0) {
- // Save current values for next time around
- load->last_idle = c_idle;
- load->last_total = c_total;
- load->last_ratio = (double) (d_total - d_idle) / d_total;
- }
-
- return load->last_ratio;
-}
-
-int get_info(const char *path, void *info, size_t s, off_t o) {
- int fd;
- int ret = 0;
- if ((fd = open(path, O_RDONLY)) < 0) {
- return -1;
- }
- if (pread(fd, info, s, o) != s) {
- ret = -1;
- }
- close(fd);
- return ret;
-}
-
-#define MIN(a, b) ((a < b) ? a : b)
-
-static pthread_mutex_t lock = PTHREAD_MUTEX_INITIALIZER;
-
-/**
- * Return the cpu load (0-1) for proc number 'which' (or average all if which == -1)
- */
-double get_cpu_load(int which) {
- double load =.0;
-
- pthread_mutex_lock(&lock);
- if(init_cpu_kstat_counters()==0) {
-
- update_cpu_kstat_counters();
-
- if (which == -1) {
- unsigned int i;
- double t;
-
- for (t = .0, i = 0; i < num_cpus; i++) {
- t += get_single_cpu_load(i);
- }
-
- // Cap total systemload to 1.0
- load = MIN((t / num_cpus), 1.0);
- } else {
- load = MIN(get_single_cpu_load(which), 1.0);
- }
- } else {
- load = -1.0;
- }
- pthread_mutex_unlock(&lock);
-
- return load;
-}
-
-/**
- * Return the cpu load (0-1) for the current process (i.e the JVM)
- * or -1.0 if the get_info() call failed
- */
-double get_process_load(void) {
- psinfo_t info;
-
- // Get the percentage of "recent cpu usage" from all the lwp:s in the JVM:s
- // process. This is returned as a value between 0.0 and 1.0 multiplied by 0x8000.
- if (get_info("/proc/self/psinfo",&info.pr_pctcpu, sizeof(info.pr_pctcpu), offsetof(psinfo_t, pr_pctcpu)) == 0) {
- return (double) info.pr_pctcpu / 0x8000;
- }
- return -1.0;
-}
-
-JNIEXPORT jdouble JNICALL
-Java_sun_management_OperatingSystemImpl_getSystemCpuLoad0
-(JNIEnv *env, jobject dummy)
-{
- return get_cpu_load(-1);
-}
-
-JNIEXPORT jdouble JNICALL
-Java_sun_management_OperatingSystemImpl_getProcessCpuLoad0
-(JNIEnv *env, jobject dummy)
-{
- return get_process_load();
-}
-