1 /*
2 * Copyright (c) 2011, 2013, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation. Oracle designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Oracle in the LICENSE file that accompanied this code.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
23 * questions.
24 */
25
26 #include <stdio.h>
27 #include <stdint.h>
28 #include <stdarg.h>
29 #include <unistd.h>
30 #include <errno.h>
31 #include <string.h>
32 #include <sys/resource.h>
33 #include <sys/types.h>
34 #include <dirent.h>
35 #include <stdlib.h>
36 #include <dlfcn.h>
37 #include <pthread.h>
38 #include <inttypes.h>
39 #include "sun_management_OperatingSystemImpl.h"
40
41 struct ticks {
42 uint64_t used;
43 uint64_t usedKernel;
44 uint64_t total;
45 };
46
47 typedef struct ticks ticks;
48
49 typedef enum {
50 CPU_LOAD_VM_ONLY,
51 CPU_LOAD_GLOBAL,
52 } CpuLoadTarget;
53
54 static struct perfbuf {
55 int nProcs;
56 ticks jvmTicks;
57 ticks cpuTicks;
58 ticks *cpus;
59 } counters;
294 double get_cpu_load(int which) {
295 double u, s;
296 u = get_cpuload_internal(which, &s, CPU_LOAD_GLOBAL);
297 if (u < 0) {
298 return -1.0;
299 }
300 // Cap total systemload to 1.0
301 return MIN((u + s), 1.0);
302 }
303
304 double get_process_load() {
305 double u, s;
306 u = get_cpuload_internal(-1, &s, CPU_LOAD_VM_ONLY);
307 if (u < 0) {
308 return -1.0;
309 }
310 return u + s;
311 }
312
313 JNIEXPORT jdouble JNICALL
314 Java_sun_management_OperatingSystemImpl_getSystemCpuLoad0
315 (JNIEnv *env, jobject dummy)
316 {
317 if(perfInit() == 0) {
318 return get_cpu_load(-1);
319 } else {
320 return -1.0;
321 }
322 }
323
324 JNIEXPORT jdouble JNICALL
325 Java_sun_management_OperatingSystemImpl_getProcessCpuLoad0
326 (JNIEnv *env, jobject dummy)
327 {
328 if(perfInit() == 0) {
329 return get_process_load();
330 } else {
331 return -1.0;
332 }
333 }
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1 /*
2 * Copyright (c) 2011, 2015, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation. Oracle designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Oracle in the LICENSE file that accompanied this code.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
23 * questions.
24 */
25
26 #include <stdio.h>
27 #include <stdint.h>
28 #include <stdarg.h>
29 #include <unistd.h>
30 #include <errno.h>
31 #include <string.h>
32 #include <sys/resource.h>
33 #include <sys/types.h>
34 #include <dirent.h>
35 #include <stdlib.h>
36 #include <dlfcn.h>
37 #include <pthread.h>
38 #include <inttypes.h>
39 #include "com_sun_management_internal_OperatingSystemImpl.h"
40
41 struct ticks {
42 uint64_t used;
43 uint64_t usedKernel;
44 uint64_t total;
45 };
46
47 typedef struct ticks ticks;
48
49 typedef enum {
50 CPU_LOAD_VM_ONLY,
51 CPU_LOAD_GLOBAL,
52 } CpuLoadTarget;
53
54 static struct perfbuf {
55 int nProcs;
56 ticks jvmTicks;
57 ticks cpuTicks;
58 ticks *cpus;
59 } counters;
294 double get_cpu_load(int which) {
295 double u, s;
296 u = get_cpuload_internal(which, &s, CPU_LOAD_GLOBAL);
297 if (u < 0) {
298 return -1.0;
299 }
300 // Cap total systemload to 1.0
301 return MIN((u + s), 1.0);
302 }
303
304 double get_process_load() {
305 double u, s;
306 u = get_cpuload_internal(-1, &s, CPU_LOAD_VM_ONLY);
307 if (u < 0) {
308 return -1.0;
309 }
310 return u + s;
311 }
312
313 JNIEXPORT jdouble JNICALL
314 Java_com_sun_management_internal_OperatingSystemImpl_getSystemCpuLoad0
315 (JNIEnv *env, jobject dummy)
316 {
317 if(perfInit() == 0) {
318 return get_cpu_load(-1);
319 } else {
320 return -1.0;
321 }
322 }
323
324 JNIEXPORT jdouble JNICALL
325 Java_com_sun_management_internal_OperatingSystemImpl_getProcessCpuLoad0
326 (JNIEnv *env, jobject dummy)
327 {
328 if(perfInit() == 0) {
329 return get_process_load();
330 } else {
331 return -1.0;
332 }
333 }
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