author | chegar |
Thu, 17 Oct 2019 20:54:25 +0100 | |
branch | datagramsocketimpl-branch |
changeset 58679 | 9c3209ff7550 |
parent 58678 | 9cf78a70fa4f |
parent 58282 | 03fce7b04b42 |
permissions | -rw-r--r-- |
50113 | 1 |
/* |
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* Copyright (c) 2012, 2019, Oracle and/or its affiliates. All rights reserved. |
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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* |
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* This code is free software; you can redistribute it and/or modify it |
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* under the terms of the GNU General Public License version 2 only, as |
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* published by the Free Software Foundation. |
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* |
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* This code is distributed in the hope that it will be useful, but WITHOUT |
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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* version 2 for more details (a copy is included in the LICENSE file that |
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* accompanied this code). |
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* |
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* You should have received a copy of the GNU General Public License version |
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* 2 along with this work; if not, write to the Free Software Foundation, |
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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* |
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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* or visit www.oracle.com if you need additional information or have any |
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* questions. |
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* |
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*/ |
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#include "precompiled.hpp" |
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#include "jvm.h" |
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#include "memory/allocation.inline.hpp" |
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#include "os_linux.inline.hpp" |
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#include "runtime/os.hpp" |
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#include "runtime/os_perf.hpp" |
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#include CPU_HEADER(vm_version_ext) |
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#include <stdio.h> |
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#include <stdarg.h> |
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#include <unistd.h> |
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#include <errno.h> |
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#include <string.h> |
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#include <sys/resource.h> |
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#include <sys/types.h> |
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#include <sys/stat.h> |
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#include <dirent.h> |
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#include <stdlib.h> |
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#include <dlfcn.h> |
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#include <pthread.h> |
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#include <limits.h> |
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#include <ifaddrs.h> |
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#include <fcntl.h> |
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50113 | 49 |
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/** |
|
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/proc/[number]/stat |
|
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Status information about the process. This is used by ps(1). It is defined in /usr/src/linux/fs/proc/array.c. |
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53 |
||
54 |
The fields, in order, with their proper scanf(3) format specifiers, are: |
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55 |
||
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1. pid %d The process id. |
|
57 |
||
58 |
2. comm %s |
|
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The filename of the executable, in parentheses. This is visible whether or not the executable is swapped out. |
|
60 |
||
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3. state %c |
|
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One character from the string "RSDZTW" where R is running, S is sleeping in an interruptible wait, D is waiting in uninterruptible disk |
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sleep, Z is zombie, T is traced or stopped (on a signal), and W is paging. |
|
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||
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4. ppid %d |
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The PID of the parent. |
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5. pgrp %d |
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The process group ID of the process. |
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6. session %d |
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The session ID of the process. |
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7. tty_nr %d |
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The tty the process uses. |
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8. tpgid %d |
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The process group ID of the process which currently owns the tty that the process is connected to. |
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9. flags %lu |
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The flags of the process. The math bit is decimal 4, and the traced bit is decimal 10. |
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82 |
||
83 |
10. minflt %lu |
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The number of minor faults the process has made which have not required loading a memory page from disk. |
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85 |
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11. cminflt %lu |
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The number of minor faults that the process's waited-for children have made. |
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12. majflt %lu |
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The number of major faults the process has made which have required loading a memory page from disk. |
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13. cmajflt %lu |
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The number of major faults that the process's waited-for children have made. |
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14. utime %lu |
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The number of jiffies that this process has been scheduled in user mode. |
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15. stime %lu |
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The number of jiffies that this process has been scheduled in kernel mode. |
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16. cutime %ld |
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The number of jiffies that this process's waited-for children have been scheduled in user mode. (See also times(2).) |
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17. cstime %ld |
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The number of jiffies that this process' waited-for children have been scheduled in kernel mode. |
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18. priority %ld |
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The standard nice value, plus fifteen. The value is never negative in the kernel. |
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19. nice %ld |
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The nice value ranges from 19 (nicest) to -19 (not nice to others). |
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20. 0 %ld This value is hard coded to 0 as a placeholder for a removed field. |
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21. itrealvalue %ld |
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The time in jiffies before the next SIGALRM is sent to the process due to an interval timer. |
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||
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22. starttime %lu |
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The time in jiffies the process started after system boot. |
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23. vsize %lu |
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Virtual memory size in bytes. |
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24. rss %ld |
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Resident Set Size: number of pages the process has in real memory, minus 3 for administrative purposes. This is just the pages which count |
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towards text, data, or stack space. This does not include pages which have not been demand-loaded in, or which are swapped out. |
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25. rlim %lu |
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Current limit in bytes on the rss of the process (usually 4294967295 on i386). |
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26. startcode %lu |
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The address above which program text can run. |
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133 |
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27. endcode %lu |
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The address below which program text can run. |
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28. startstack %lu |
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The address of the start of the stack. |
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29. kstkesp %lu |
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The current value of esp (stack pointer), as found in the kernel stack page for the process. |
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30. kstkeip %lu |
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The current EIP (instruction pointer). |
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31. signal %lu |
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The bitmap of pending signals (usually 0). |
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32. blocked %lu |
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The bitmap of blocked signals (usually 0, 2 for shells). |
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33. sigignore %lu |
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The bitmap of ignored signals. |
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34. sigcatch %lu |
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The bitmap of catched signals. |
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35. wchan %lu |
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This is the "channel" in which the process is waiting. It is the address of a system call, and can be looked up in a namelist if you need |
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a textual name. (If you have an up-to-date /etc/psdatabase, then try ps -l to see the WCHAN field in action.) |
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36. nswap %lu |
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Number of pages swapped - not maintained. |
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37. cnswap %lu |
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Cumulative nswap for child processes. |
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38. exit_signal %d |
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Signal to be sent to parent when we die. |
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39. processor %d |
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CPU number last executed on. |
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///// SSCANF FORMAT STRING. Copy and use. |
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field: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 |
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format: %d %s %c %d %d %d %d %d %lu %lu %lu %lu %lu %lu %lu %ld %ld %ld %ld %ld %ld %lu %lu %ld %lu %lu %lu %lu %lu %lu %lu %lu %lu %lu %lu %lu %lu %d %d |
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*/ |
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/** |
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* For platforms that have them, when declaring |
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* a printf-style function, |
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* formatSpec is the parameter number (starting at 1) |
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* that is the format argument ("%d pid %s") |
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* params is the parameter number where the actual args to |
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* the format starts. If the args are in a va_list, this |
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* should be 0. |
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*/ |
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#ifndef PRINTF_ARGS |
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# define PRINTF_ARGS(formatSpec, params) ATTRIBUTE_PRINTF(formatSpec, params) |
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#endif |
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#ifndef SCANF_ARGS |
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# define SCANF_ARGS(formatSpec, params) ATTRIBUTE_SCANF(formatSpec, params) |
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#endif |
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#ifndef _PRINTFMT_ |
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# define _PRINTFMT_ |
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#endif |
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#ifndef _SCANFMT_ |
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# define _SCANFMT_ |
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#endif |
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typedef enum { |
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CPU_LOAD_VM_ONLY, |
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CPU_LOAD_GLOBAL, |
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} CpuLoadTarget; |
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enum { |
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UNDETECTED, |
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UNDETECTABLE, |
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LINUX26_NPTL, |
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BAREMETAL |
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}; |
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struct CPUPerfCounters { |
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int nProcs; |
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os::Linux::CPUPerfTicks jvmTicks; |
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os::Linux::CPUPerfTicks* cpus; |
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}; |
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static double get_cpu_load(int which_logical_cpu, CPUPerfCounters* counters, double* pkernelLoad, CpuLoadTarget target); |
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/** reads /proc/<pid>/stat data, with some checks and some skips. |
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* Ensure that 'fmt' does _NOT_ contain the first two "%d %s" |
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*/ |
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static int SCANF_ARGS(2, 0) vread_statdata(const char* procfile, _SCANFMT_ const char* fmt, va_list args) { |
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FILE*f; |
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int n; |
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char buf[2048]; |
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if ((f = fopen(procfile, "r")) == NULL) { |
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return -1; |
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} |
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if ((n = fread(buf, 1, sizeof(buf), f)) != -1) { |
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char *tmp; |
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buf[n-1] = '\0'; |
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/** skip through pid and exec name. */ |
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if ((tmp = strrchr(buf, ')')) != NULL) { |
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// skip the ')' and the following space |
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// but check that buffer is long enough |
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tmp += 2; |
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if (tmp < buf + n) { |
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n = vsscanf(tmp, fmt, args); |
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} |
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} |
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} |
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fclose(f); |
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return n; |
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} |
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static int SCANF_ARGS(2, 3) read_statdata(const char* procfile, _SCANFMT_ const char* fmt, ...) { |
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int n; |
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va_list args; |
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va_start(args, fmt); |
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n = vread_statdata(procfile, fmt, args); |
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va_end(args); |
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return n; |
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} |
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static FILE* open_statfile(void) { |
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FILE *f; |
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273 |
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if ((f = fopen("/proc/stat", "r")) == NULL) { |
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static int haveWarned = 0; |
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if (!haveWarned) { |
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haveWarned = 1; |
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} |
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} |
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return f; |
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281 |
} |
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282 |
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283 |
static int get_systemtype(void) { |
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284 |
static int procEntriesType = UNDETECTED; |
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DIR *taskDir; |
|
286 |
||
287 |
if (procEntriesType != UNDETECTED) { |
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return procEntriesType; |
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} |
|
290 |
||
291 |
// Check whether we have a task subdirectory |
|
292 |
if ((taskDir = opendir("/proc/self/task")) == NULL) { |
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procEntriesType = UNDETECTABLE; |
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} else { |
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295 |
// The task subdirectory exists; we're on a Linux >= 2.6 system |
|
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closedir(taskDir); |
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procEntriesType = LINUX26_NPTL; |
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} |
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299 |
||
300 |
return procEntriesType; |
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} |
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302 |
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303 |
/** read user and system ticks from a named procfile, assumed to be in 'stat' format then. */ |
|
304 |
static int read_ticks(const char* procfile, uint64_t* userTicks, uint64_t* systemTicks) { |
|
305 |
return read_statdata(procfile, "%*c %*d %*d %*d %*d %*d %*u %*u %*u %*u %*u " UINT64_FORMAT " " UINT64_FORMAT, |
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userTicks, systemTicks); |
|
307 |
} |
|
308 |
||
309 |
/** |
|
310 |
* Return the number of ticks spent in any of the processes belonging |
|
311 |
* to the JVM on any CPU. |
|
312 |
*/ |
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static OSReturn get_jvm_ticks(os::Linux::CPUPerfTicks* pticks) { |
50113 | 314 |
uint64_t userTicks; |
315 |
uint64_t systemTicks; |
|
316 |
||
317 |
if (get_systemtype() != LINUX26_NPTL) { |
|
318 |
return OS_ERR; |
|
319 |
} |
|
320 |
||
321 |
if (read_ticks("/proc/self/stat", &userTicks, &systemTicks) != 2) { |
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322 |
return OS_ERR; |
|
323 |
} |
|
324 |
||
325 |
// get the total |
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326 |
if (! os::Linux::get_tick_information(pticks, -1)) { |
50113 | 327 |
return OS_ERR; |
328 |
} |
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329 |
||
330 |
pticks->used = userTicks; |
|
331 |
pticks->usedKernel = systemTicks; |
|
332 |
||
333 |
return OS_OK; |
|
334 |
} |
|
335 |
||
336 |
/** |
|
337 |
* Return the load of the CPU as a double. 1.0 means the CPU process uses all |
|
338 |
* available time for user or system processes, 0.0 means the CPU uses all time |
|
339 |
* being idle. |
|
340 |
* |
|
341 |
* Returns a negative value if there is a problem in determining the CPU load. |
|
342 |
*/ |
|
343 |
static double get_cpu_load(int which_logical_cpu, CPUPerfCounters* counters, double* pkernelLoad, CpuLoadTarget target) { |
|
344 |
uint64_t udiff, kdiff, tdiff; |
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os::Linux::CPUPerfTicks* pticks; |
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os::Linux::CPUPerfTicks tmp; |
50113 | 347 |
double user_load; |
348 |
||
349 |
*pkernelLoad = 0.0; |
|
350 |
||
351 |
if (target == CPU_LOAD_VM_ONLY) { |
|
352 |
pticks = &counters->jvmTicks; |
|
353 |
} else if (-1 == which_logical_cpu) { |
|
354 |
pticks = &counters->cpus[counters->nProcs]; |
|
355 |
} else { |
|
356 |
pticks = &counters->cpus[which_logical_cpu]; |
|
357 |
} |
|
358 |
||
359 |
tmp = *pticks; |
|
360 |
||
361 |
if (target == CPU_LOAD_VM_ONLY) { |
|
362 |
if (get_jvm_ticks(pticks) != OS_OK) { |
|
363 |
return -1.0; |
|
364 |
} |
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365 |
} else if (! os::Linux::get_tick_information(pticks, which_logical_cpu)) { |
50113 | 366 |
return -1.0; |
367 |
} |
|
368 |
||
369 |
// seems like we sometimes end up with less kernel ticks when |
|
370 |
// reading /proc/self/stat a second time, timing issue between cpus? |
|
371 |
if (pticks->usedKernel < tmp.usedKernel) { |
|
372 |
kdiff = 0; |
|
373 |
} else { |
|
374 |
kdiff = pticks->usedKernel - tmp.usedKernel; |
|
375 |
} |
|
376 |
tdiff = pticks->total - tmp.total; |
|
377 |
udiff = pticks->used - tmp.used; |
|
378 |
||
379 |
if (tdiff == 0) { |
|
380 |
return 0.0; |
|
381 |
} else if (tdiff < (udiff + kdiff)) { |
|
382 |
tdiff = udiff + kdiff; |
|
383 |
} |
|
384 |
*pkernelLoad = (kdiff / (double)tdiff); |
|
385 |
// BUG9044876, normalize return values to sane values |
|
386 |
*pkernelLoad = MAX2<double>(*pkernelLoad, 0.0); |
|
387 |
*pkernelLoad = MIN2<double>(*pkernelLoad, 1.0); |
|
388 |
||
389 |
user_load = (udiff / (double)tdiff); |
|
390 |
user_load = MAX2<double>(user_load, 0.0); |
|
391 |
user_load = MIN2<double>(user_load, 1.0); |
|
392 |
||
393 |
return user_load; |
|
394 |
} |
|
395 |
||
396 |
static int SCANF_ARGS(1, 2) parse_stat(_SCANFMT_ const char* fmt, ...) { |
|
397 |
FILE *f; |
|
398 |
va_list args; |
|
399 |
||
400 |
va_start(args, fmt); |
|
401 |
||
402 |
if ((f = open_statfile()) == NULL) { |
|
403 |
va_end(args); |
|
404 |
return OS_ERR; |
|
405 |
} |
|
406 |
for (;;) { |
|
407 |
char line[80]; |
|
408 |
if (fgets(line, sizeof(line), f) != NULL) { |
|
409 |
if (vsscanf(line, fmt, args) == 1) { |
|
410 |
fclose(f); |
|
411 |
va_end(args); |
|
412 |
return OS_OK; |
|
413 |
} |
|
414 |
} else { |
|
415 |
fclose(f); |
|
416 |
va_end(args); |
|
417 |
return OS_ERR; |
|
418 |
} |
|
419 |
} |
|
420 |
} |
|
421 |
||
422 |
static int get_noof_context_switches(uint64_t* switches) { |
|
423 |
return parse_stat("ctxt " UINT64_FORMAT "\n", switches); |
|
424 |
} |
|
425 |
||
426 |
/** returns boot time in _seconds_ since epoch */ |
|
427 |
static int get_boot_time(uint64_t* time) { |
|
428 |
return parse_stat("btime " UINT64_FORMAT "\n", time); |
|
429 |
} |
|
430 |
||
431 |
static int perf_context_switch_rate(double* rate) { |
|
432 |
static pthread_mutex_t contextSwitchLock = PTHREAD_MUTEX_INITIALIZER; |
|
433 |
static uint64_t lastTime; |
|
434 |
static uint64_t lastSwitches; |
|
435 |
static double lastRate; |
|
436 |
||
437 |
uint64_t lt = 0; |
|
438 |
int res = 0; |
|
439 |
||
440 |
if (lastTime == 0) { |
|
441 |
uint64_t tmp; |
|
442 |
if (get_boot_time(&tmp) < 0) { |
|
443 |
return OS_ERR; |
|
444 |
} |
|
445 |
lt = tmp * 1000; |
|
446 |
} |
|
447 |
||
448 |
res = OS_OK; |
|
449 |
||
450 |
pthread_mutex_lock(&contextSwitchLock); |
|
451 |
{ |
|
452 |
||
453 |
uint64_t sw; |
|
454 |
s8 t, d; |
|
455 |
||
456 |
if (lastTime == 0) { |
|
457 |
lastTime = lt; |
|
458 |
} |
|
459 |
||
460 |
t = os::javaTimeMillis(); |
|
461 |
d = t - lastTime; |
|
462 |
||
463 |
if (d == 0) { |
|
464 |
*rate = lastRate; |
|
465 |
} else if (!get_noof_context_switches(&sw)) { |
|
466 |
*rate = ( (double)(sw - lastSwitches) / d ) * 1000; |
|
467 |
lastRate = *rate; |
|
468 |
lastSwitches = sw; |
|
469 |
lastTime = t; |
|
470 |
} else { |
|
471 |
*rate = 0; |
|
472 |
res = OS_ERR; |
|
473 |
} |
|
474 |
if (*rate <= 0) { |
|
475 |
*rate = 0; |
|
476 |
lastRate = 0; |
|
477 |
} |
|
478 |
} |
|
479 |
pthread_mutex_unlock(&contextSwitchLock); |
|
480 |
||
481 |
return res; |
|
482 |
} |
|
483 |
||
484 |
class CPUPerformanceInterface::CPUPerformance : public CHeapObj<mtInternal> { |
|
485 |
friend class CPUPerformanceInterface; |
|
486 |
private: |
|
487 |
CPUPerfCounters _counters; |
|
488 |
||
489 |
int cpu_load(int which_logical_cpu, double* cpu_load); |
|
490 |
int context_switch_rate(double* rate); |
|
491 |
int cpu_load_total_process(double* cpu_load); |
|
492 |
int cpu_loads_process(double* pjvmUserLoad, double* pjvmKernelLoad, double* psystemTotalLoad); |
|
493 |
||
494 |
public: |
|
495 |
CPUPerformance(); |
|
496 |
bool initialize(); |
|
497 |
~CPUPerformance(); |
|
498 |
}; |
|
499 |
||
500 |
CPUPerformanceInterface::CPUPerformance::CPUPerformance() { |
|
501 |
_counters.nProcs = os::active_processor_count(); |
|
502 |
_counters.cpus = NULL; |
|
503 |
} |
|
504 |
||
505 |
bool CPUPerformanceInterface::CPUPerformance::initialize() { |
|
58083 | 506 |
size_t array_entry_count = _counters.nProcs + 1; |
507 |
_counters.cpus = NEW_C_HEAP_ARRAY(os::Linux::CPUPerfTicks, array_entry_count, mtInternal); |
|
508 |
memset(_counters.cpus, 0, array_entry_count * sizeof(*_counters.cpus)); |
|
50113 | 509 |
|
510 |
// For the CPU load total |
|
54470
14986fb09d9a
8221535: add steal tick related information to hs_error file [linux]
mbaesken
parents:
53911
diff
changeset
|
511 |
os::Linux::get_tick_information(&_counters.cpus[_counters.nProcs], -1); |
50113 | 512 |
|
513 |
// For each CPU |
|
514 |
for (int i = 0; i < _counters.nProcs; i++) { |
|
54470
14986fb09d9a
8221535: add steal tick related information to hs_error file [linux]
mbaesken
parents:
53911
diff
changeset
|
515 |
os::Linux::get_tick_information(&_counters.cpus[i], i); |
50113 | 516 |
} |
517 |
// For JVM load |
|
518 |
get_jvm_ticks(&_counters.jvmTicks); |
|
519 |
||
520 |
// initialize context switch system |
|
521 |
// the double is only for init |
|
522 |
double init_ctx_switch_rate; |
|
523 |
perf_context_switch_rate(&init_ctx_switch_rate); |
|
524 |
||
525 |
return true; |
|
526 |
} |
|
527 |
||
528 |
CPUPerformanceInterface::CPUPerformance::~CPUPerformance() { |
|
529 |
if (_counters.cpus != NULL) { |
|
530 |
FREE_C_HEAP_ARRAY(char, _counters.cpus); |
|
531 |
} |
|
532 |
} |
|
533 |
||
534 |
int CPUPerformanceInterface::CPUPerformance::cpu_load(int which_logical_cpu, double* cpu_load) { |
|
535 |
double u, s; |
|
536 |
u = get_cpu_load(which_logical_cpu, &_counters, &s, CPU_LOAD_GLOBAL); |
|
537 |
if (u < 0) { |
|
538 |
*cpu_load = 0.0; |
|
539 |
return OS_ERR; |
|
540 |
} |
|
541 |
// Cap total systemload to 1.0 |
|
542 |
*cpu_load = MIN2<double>((u + s), 1.0); |
|
543 |
return OS_OK; |
|
544 |
} |
|
545 |
||
546 |
int CPUPerformanceInterface::CPUPerformance::cpu_load_total_process(double* cpu_load) { |
|
547 |
double u, s; |
|
548 |
u = get_cpu_load(-1, &_counters, &s, CPU_LOAD_VM_ONLY); |
|
549 |
if (u < 0) { |
|
550 |
*cpu_load = 0.0; |
|
551 |
return OS_ERR; |
|
552 |
} |
|
553 |
*cpu_load = u + s; |
|
554 |
return OS_OK; |
|
555 |
} |
|
556 |
||
557 |
int CPUPerformanceInterface::CPUPerformance::cpu_loads_process(double* pjvmUserLoad, double* pjvmKernelLoad, double* psystemTotalLoad) { |
|
558 |
double u, s, t; |
|
559 |
||
560 |
assert(pjvmUserLoad != NULL, "pjvmUserLoad not inited"); |
|
561 |
assert(pjvmKernelLoad != NULL, "pjvmKernelLoad not inited"); |
|
562 |
assert(psystemTotalLoad != NULL, "psystemTotalLoad not inited"); |
|
563 |
||
564 |
u = get_cpu_load(-1, &_counters, &s, CPU_LOAD_VM_ONLY); |
|
565 |
if (u < 0) { |
|
566 |
*pjvmUserLoad = 0.0; |
|
567 |
*pjvmKernelLoad = 0.0; |
|
568 |
*psystemTotalLoad = 0.0; |
|
569 |
return OS_ERR; |
|
570 |
} |
|
571 |
||
572 |
cpu_load(-1, &t); |
|
573 |
// clamp at user+system and 1.0 |
|
574 |
if (u + s > t) { |
|
575 |
t = MIN2<double>(u + s, 1.0); |
|
576 |
} |
|
577 |
||
578 |
*pjvmUserLoad = u; |
|
579 |
*pjvmKernelLoad = s; |
|
580 |
*psystemTotalLoad = t; |
|
581 |
||
582 |
return OS_OK; |
|
583 |
} |
|
584 |
||
585 |
int CPUPerformanceInterface::CPUPerformance::context_switch_rate(double* rate) { |
|
586 |
return perf_context_switch_rate(rate); |
|
587 |
} |
|
588 |
||
589 |
CPUPerformanceInterface::CPUPerformanceInterface() { |
|
590 |
_impl = NULL; |
|
591 |
} |
|
592 |
||
593 |
bool CPUPerformanceInterface::initialize() { |
|
594 |
_impl = new CPUPerformanceInterface::CPUPerformance(); |
|
58282
03fce7b04b42
8230395: Code checks for NULL value returned from NEW_C_HEAP_ARRAY which can not happen
dholmes
parents:
58083
diff
changeset
|
595 |
return _impl->initialize(); |
50113 | 596 |
} |
597 |
||
598 |
CPUPerformanceInterface::~CPUPerformanceInterface() { |
|
599 |
if (_impl != NULL) { |
|
600 |
delete _impl; |
|
601 |
} |
|
602 |
} |
|
603 |
||
604 |
int CPUPerformanceInterface::cpu_load(int which_logical_cpu, double* cpu_load) const { |
|
605 |
return _impl->cpu_load(which_logical_cpu, cpu_load); |
|
606 |
} |
|
607 |
||
608 |
int CPUPerformanceInterface::cpu_load_total_process(double* cpu_load) const { |
|
609 |
return _impl->cpu_load_total_process(cpu_load); |
|
610 |
} |
|
611 |
||
612 |
int CPUPerformanceInterface::cpu_loads_process(double* pjvmUserLoad, double* pjvmKernelLoad, double* psystemTotalLoad) const { |
|
613 |
return _impl->cpu_loads_process(pjvmUserLoad, pjvmKernelLoad, psystemTotalLoad); |
|
614 |
} |
|
615 |
||
616 |
int CPUPerformanceInterface::context_switch_rate(double* rate) const { |
|
617 |
return _impl->context_switch_rate(rate); |
|
618 |
} |
|
619 |
||
620 |
class SystemProcessInterface::SystemProcesses : public CHeapObj<mtInternal> { |
|
621 |
friend class SystemProcessInterface; |
|
622 |
private: |
|
623 |
class ProcessIterator : public CHeapObj<mtInternal> { |
|
624 |
friend class SystemProcessInterface::SystemProcesses; |
|
625 |
private: |
|
626 |
DIR* _dir; |
|
627 |
struct dirent* _entry; |
|
628 |
bool _valid; |
|
629 |
char _exeName[PATH_MAX]; |
|
630 |
char _exePath[PATH_MAX]; |
|
631 |
||
632 |
ProcessIterator(); |
|
633 |
~ProcessIterator(); |
|
634 |
bool initialize(); |
|
635 |
||
636 |
bool is_valid() const { return _valid; } |
|
637 |
bool is_valid_entry(struct dirent* entry) const; |
|
638 |
bool is_dir(const char* name) const; |
|
639 |
int fsize(const char* name, uint64_t& size) const; |
|
640 |
||
641 |
char* allocate_string(const char* str) const; |
|
642 |
void get_exe_name(); |
|
643 |
char* get_exe_path(); |
|
644 |
char* get_cmdline(); |
|
645 |
||
646 |
int current(SystemProcess* process_info); |
|
647 |
int next_process(); |
|
648 |
}; |
|
649 |
||
650 |
ProcessIterator* _iterator; |
|
651 |
SystemProcesses(); |
|
652 |
bool initialize(); |
|
653 |
~SystemProcesses(); |
|
654 |
||
655 |
//information about system processes |
|
656 |
int system_processes(SystemProcess** system_processes, int* no_of_sys_processes) const; |
|
657 |
}; |
|
658 |
||
659 |
bool SystemProcessInterface::SystemProcesses::ProcessIterator::is_dir(const char* name) const { |
|
660 |
struct stat mystat; |
|
661 |
int ret_val = 0; |
|
662 |
||
663 |
ret_val = stat(name, &mystat); |
|
664 |
if (ret_val < 0) { |
|
665 |
return false; |
|
666 |
} |
|
667 |
ret_val = S_ISDIR(mystat.st_mode); |
|
668 |
return ret_val > 0; |
|
669 |
} |
|
670 |
||
671 |
int SystemProcessInterface::SystemProcesses::ProcessIterator::fsize(const char* name, uint64_t& size) const { |
|
672 |
assert(name != NULL, "name pointer is NULL!"); |
|
673 |
size = 0; |
|
674 |
struct stat fbuf; |
|
675 |
||
676 |
if (stat(name, &fbuf) < 0) { |
|
677 |
return OS_ERR; |
|
678 |
} |
|
679 |
size = fbuf.st_size; |
|
680 |
return OS_OK; |
|
681 |
} |
|
682 |
||
683 |
// if it has a numeric name, is a directory and has a 'stat' file in it |
|
684 |
bool SystemProcessInterface::SystemProcesses::ProcessIterator::is_valid_entry(struct dirent* entry) const { |
|
685 |
char buffer[PATH_MAX]; |
|
686 |
uint64_t size = 0; |
|
687 |
||
688 |
if (atoi(entry->d_name) != 0) { |
|
689 |
jio_snprintf(buffer, PATH_MAX, "/proc/%s", entry->d_name); |
|
690 |
buffer[PATH_MAX - 1] = '\0'; |
|
691 |
||
692 |
if (is_dir(buffer)) { |
|
693 |
jio_snprintf(buffer, PATH_MAX, "/proc/%s/stat", entry->d_name); |
|
694 |
buffer[PATH_MAX - 1] = '\0'; |
|
695 |
if (fsize(buffer, size) != OS_ERR) { |
|
696 |
return true; |
|
697 |
} |
|
698 |
} |
|
699 |
} |
|
700 |
return false; |
|
701 |
} |
|
702 |
||
703 |
// get exe-name from /proc/<pid>/stat |
|
704 |
void SystemProcessInterface::SystemProcesses::ProcessIterator::get_exe_name() { |
|
705 |
FILE* fp; |
|
706 |
char buffer[PATH_MAX]; |
|
707 |
||
708 |
jio_snprintf(buffer, PATH_MAX, "/proc/%s/stat", _entry->d_name); |
|
709 |
buffer[PATH_MAX - 1] = '\0'; |
|
710 |
if ((fp = fopen(buffer, "r")) != NULL) { |
|
711 |
if (fgets(buffer, PATH_MAX, fp) != NULL) { |
|
712 |
char* start, *end; |
|
713 |
// exe-name is between the first pair of ( and ) |
|
714 |
start = strchr(buffer, '('); |
|
715 |
if (start != NULL && start[1] != '\0') { |
|
716 |
start++; |
|
717 |
end = strrchr(start, ')'); |
|
718 |
if (end != NULL) { |
|
719 |
size_t len; |
|
720 |
len = MIN2<size_t>(end - start, sizeof(_exeName) - 1); |
|
721 |
memcpy(_exeName, start, len); |
|
722 |
_exeName[len] = '\0'; |
|
723 |
} |
|
724 |
} |
|
725 |
} |
|
726 |
fclose(fp); |
|
727 |
} |
|
728 |
} |
|
729 |
||
730 |
// get command line from /proc/<pid>/cmdline |
|
731 |
char* SystemProcessInterface::SystemProcesses::ProcessIterator::get_cmdline() { |
|
732 |
FILE* fp; |
|
733 |
char buffer[PATH_MAX]; |
|
734 |
char* cmdline = NULL; |
|
735 |
||
736 |
jio_snprintf(buffer, PATH_MAX, "/proc/%s/cmdline", _entry->d_name); |
|
737 |
buffer[PATH_MAX - 1] = '\0'; |
|
738 |
if ((fp = fopen(buffer, "r")) != NULL) { |
|
739 |
size_t size = 0; |
|
740 |
char dummy; |
|
741 |
||
742 |
// find out how long the file is (stat always returns 0) |
|
743 |
while (fread(&dummy, 1, 1, fp) == 1) { |
|
744 |
size++; |
|
745 |
} |
|
746 |
if (size > 0) { |
|
747 |
cmdline = NEW_C_HEAP_ARRAY(char, size + 1, mtInternal); |
|
58282
03fce7b04b42
8230395: Code checks for NULL value returned from NEW_C_HEAP_ARRAY which can not happen
dholmes
parents:
58083
diff
changeset
|
748 |
cmdline[0] = '\0'; |
03fce7b04b42
8230395: Code checks for NULL value returned from NEW_C_HEAP_ARRAY which can not happen
dholmes
parents:
58083
diff
changeset
|
749 |
if (fseek(fp, 0, SEEK_SET) == 0) { |
03fce7b04b42
8230395: Code checks for NULL value returned from NEW_C_HEAP_ARRAY which can not happen
dholmes
parents:
58083
diff
changeset
|
750 |
if (fread(cmdline, 1, size, fp) == size) { |
03fce7b04b42
8230395: Code checks for NULL value returned from NEW_C_HEAP_ARRAY which can not happen
dholmes
parents:
58083
diff
changeset
|
751 |
// the file has the arguments separated by '\0', |
03fce7b04b42
8230395: Code checks for NULL value returned from NEW_C_HEAP_ARRAY which can not happen
dholmes
parents:
58083
diff
changeset
|
752 |
// so we translate '\0' to ' ' |
03fce7b04b42
8230395: Code checks for NULL value returned from NEW_C_HEAP_ARRAY which can not happen
dholmes
parents:
58083
diff
changeset
|
753 |
for (size_t i = 0; i < size; i++) { |
03fce7b04b42
8230395: Code checks for NULL value returned from NEW_C_HEAP_ARRAY which can not happen
dholmes
parents:
58083
diff
changeset
|
754 |
if (cmdline[i] == '\0') { |
03fce7b04b42
8230395: Code checks for NULL value returned from NEW_C_HEAP_ARRAY which can not happen
dholmes
parents:
58083
diff
changeset
|
755 |
cmdline[i] = ' '; |
50113 | 756 |
} |
757 |
} |
|
58282
03fce7b04b42
8230395: Code checks for NULL value returned from NEW_C_HEAP_ARRAY which can not happen
dholmes
parents:
58083
diff
changeset
|
758 |
cmdline[size] = '\0'; |
50113 | 759 |
} |
760 |
} |
|
761 |
} |
|
762 |
fclose(fp); |
|
763 |
} |
|
764 |
return cmdline; |
|
765 |
} |
|
766 |
||
767 |
// get full path to exe from /proc/<pid>/exe symlink |
|
768 |
char* SystemProcessInterface::SystemProcesses::ProcessIterator::get_exe_path() { |
|
769 |
char buffer[PATH_MAX]; |
|
770 |
||
771 |
jio_snprintf(buffer, PATH_MAX, "/proc/%s/exe", _entry->d_name); |
|
772 |
buffer[PATH_MAX - 1] = '\0'; |
|
773 |
return realpath(buffer, _exePath); |
|
774 |
} |
|
775 |
||
776 |
char* SystemProcessInterface::SystemProcesses::ProcessIterator::allocate_string(const char* str) const { |
|
777 |
if (str != NULL) { |
|
53882
ca682d9d8db5
8214777: Avoid some GCC 8.X strncpy() errors in HotSpot
mikael
parents:
51366
diff
changeset
|
778 |
return os::strdup_check_oom(str, mtInternal); |
50113 | 779 |
} |
780 |
return NULL; |
|
781 |
} |
|
782 |
||
783 |
int SystemProcessInterface::SystemProcesses::ProcessIterator::current(SystemProcess* process_info) { |
|
784 |
if (!is_valid()) { |
|
785 |
return OS_ERR; |
|
786 |
} |
|
787 |
||
788 |
process_info->set_pid(atoi(_entry->d_name)); |
|
789 |
||
790 |
get_exe_name(); |
|
791 |
process_info->set_name(allocate_string(_exeName)); |
|
792 |
||
793 |
if (get_exe_path() != NULL) { |
|
794 |
process_info->set_path(allocate_string(_exePath)); |
|
795 |
} |
|
796 |
||
797 |
char* cmdline = NULL; |
|
798 |
cmdline = get_cmdline(); |
|
799 |
if (cmdline != NULL) { |
|
800 |
process_info->set_command_line(allocate_string(cmdline)); |
|
801 |
FREE_C_HEAP_ARRAY(char, cmdline); |
|
802 |
} |
|
803 |
||
804 |
return OS_OK; |
|
805 |
} |
|
806 |
||
807 |
int SystemProcessInterface::SystemProcesses::ProcessIterator::next_process() { |
|
808 |
if (!is_valid()) { |
|
809 |
return OS_ERR; |
|
810 |
} |
|
811 |
||
812 |
do { |
|
51106
f605c91e5219
8202353: os::readdir should use readdir instead of readdir_r
kbarrett
parents:
50879
diff
changeset
|
813 |
_entry = os::readdir(_dir); |
50113 | 814 |
if (_entry == NULL) { |
51106
f605c91e5219
8202353: os::readdir should use readdir instead of readdir_r
kbarrett
parents:
50879
diff
changeset
|
815 |
// Error or reached end. Could use errno to distinguish those cases. |
50113 | 816 |
_valid = false; |
817 |
return OS_ERR; |
|
818 |
} |
|
819 |
} while(!is_valid_entry(_entry)); |
|
820 |
||
821 |
_valid = true; |
|
822 |
return OS_OK; |
|
823 |
} |
|
824 |
||
825 |
SystemProcessInterface::SystemProcesses::ProcessIterator::ProcessIterator() { |
|
826 |
_dir = NULL; |
|
827 |
_entry = NULL; |
|
828 |
_valid = false; |
|
829 |
} |
|
830 |
||
831 |
bool SystemProcessInterface::SystemProcesses::ProcessIterator::initialize() { |
|
51106
f605c91e5219
8202353: os::readdir should use readdir instead of readdir_r
kbarrett
parents:
50879
diff
changeset
|
832 |
_dir = os::opendir("/proc"); |
f605c91e5219
8202353: os::readdir should use readdir instead of readdir_r
kbarrett
parents:
50879
diff
changeset
|
833 |
_entry = NULL; |
50113 | 834 |
_valid = true; |
835 |
next_process(); |
|
836 |
||
837 |
return true; |
|
838 |
} |
|
839 |
||
840 |
SystemProcessInterface::SystemProcesses::ProcessIterator::~ProcessIterator() { |
|
841 |
if (_dir != NULL) { |
|
51106
f605c91e5219
8202353: os::readdir should use readdir instead of readdir_r
kbarrett
parents:
50879
diff
changeset
|
842 |
os::closedir(_dir); |
50113 | 843 |
} |
844 |
} |
|
845 |
||
846 |
SystemProcessInterface::SystemProcesses::SystemProcesses() { |
|
847 |
_iterator = NULL; |
|
848 |
} |
|
849 |
||
850 |
bool SystemProcessInterface::SystemProcesses::initialize() { |
|
851 |
_iterator = new SystemProcessInterface::SystemProcesses::ProcessIterator(); |
|
58282
03fce7b04b42
8230395: Code checks for NULL value returned from NEW_C_HEAP_ARRAY which can not happen
dholmes
parents:
58083
diff
changeset
|
852 |
return _iterator->initialize(); |
50113 | 853 |
} |
854 |
||
855 |
SystemProcessInterface::SystemProcesses::~SystemProcesses() { |
|
856 |
if (_iterator != NULL) { |
|
857 |
delete _iterator; |
|
858 |
} |
|
859 |
} |
|
860 |
||
861 |
int SystemProcessInterface::SystemProcesses::system_processes(SystemProcess** system_processes, int* no_of_sys_processes) const { |
|
862 |
assert(system_processes != NULL, "system_processes pointer is NULL!"); |
|
863 |
assert(no_of_sys_processes != NULL, "system_processes counter pointers is NULL!"); |
|
864 |
assert(_iterator != NULL, "iterator is NULL!"); |
|
865 |
||
866 |
// initialize pointers |
|
867 |
*no_of_sys_processes = 0; |
|
868 |
*system_processes = NULL; |
|
869 |
||
870 |
while (_iterator->is_valid()) { |
|
871 |
SystemProcess* tmp = new SystemProcess(); |
|
872 |
_iterator->current(tmp); |
|
873 |
||
874 |
//if already existing head |
|
875 |
if (*system_processes != NULL) { |
|
876 |
//move "first to second" |
|
877 |
tmp->set_next(*system_processes); |
|
878 |
} |
|
879 |
// new head |
|
880 |
*system_processes = tmp; |
|
881 |
// increment |
|
882 |
(*no_of_sys_processes)++; |
|
883 |
// step forward |
|
884 |
_iterator->next_process(); |
|
885 |
} |
|
886 |
return OS_OK; |
|
887 |
} |
|
888 |
||
889 |
int SystemProcessInterface::system_processes(SystemProcess** system_procs, int* no_of_sys_processes) const { |
|
890 |
return _impl->system_processes(system_procs, no_of_sys_processes); |
|
891 |
} |
|
892 |
||
893 |
SystemProcessInterface::SystemProcessInterface() { |
|
894 |
_impl = NULL; |
|
895 |
} |
|
896 |
||
897 |
bool SystemProcessInterface::initialize() { |
|
898 |
_impl = new SystemProcessInterface::SystemProcesses(); |
|
58282
03fce7b04b42
8230395: Code checks for NULL value returned from NEW_C_HEAP_ARRAY which can not happen
dholmes
parents:
58083
diff
changeset
|
899 |
return _impl->initialize(); |
50113 | 900 |
} |
901 |
||
902 |
SystemProcessInterface::~SystemProcessInterface() { |
|
903 |
if (_impl != NULL) { |
|
904 |
delete _impl; |
|
905 |
} |
|
906 |
} |
|
907 |
||
908 |
CPUInformationInterface::CPUInformationInterface() { |
|
909 |
_cpu_info = NULL; |
|
910 |
} |
|
911 |
||
912 |
bool CPUInformationInterface::initialize() { |
|
913 |
_cpu_info = new CPUInformation(); |
|
914 |
_cpu_info->set_number_of_hardware_threads(VM_Version_Ext::number_of_threads()); |
|
915 |
_cpu_info->set_number_of_cores(VM_Version_Ext::number_of_cores()); |
|
916 |
_cpu_info->set_number_of_sockets(VM_Version_Ext::number_of_sockets()); |
|
917 |
_cpu_info->set_cpu_name(VM_Version_Ext::cpu_name()); |
|
918 |
_cpu_info->set_cpu_description(VM_Version_Ext::cpu_description()); |
|
919 |
return true; |
|
920 |
} |
|
921 |
||
922 |
CPUInformationInterface::~CPUInformationInterface() { |
|
923 |
if (_cpu_info != NULL) { |
|
924 |
if (_cpu_info->cpu_name() != NULL) { |
|
925 |
const char* cpu_name = _cpu_info->cpu_name(); |
|
926 |
FREE_C_HEAP_ARRAY(char, cpu_name); |
|
927 |
_cpu_info->set_cpu_name(NULL); |
|
928 |
} |
|
929 |
if (_cpu_info->cpu_description() != NULL) { |
|
930 |
const char* cpu_desc = _cpu_info->cpu_description(); |
|
931 |
FREE_C_HEAP_ARRAY(char, cpu_desc); |
|
932 |
_cpu_info->set_cpu_description(NULL); |
|
933 |
} |
|
934 |
delete _cpu_info; |
|
935 |
} |
|
936 |
} |
|
937 |
||
938 |
int CPUInformationInterface::cpu_information(CPUInformation& cpu_info) { |
|
939 |
if (_cpu_info == NULL) { |
|
940 |
return OS_ERR; |
|
941 |
} |
|
942 |
||
943 |
cpu_info = *_cpu_info; // shallow copy assignment |
|
944 |
return OS_OK; |
|
945 |
} |
|
50879 | 946 |
|
947 |
class NetworkPerformanceInterface::NetworkPerformance : public CHeapObj<mtInternal> { |
|
948 |
friend class NetworkPerformanceInterface; |
|
949 |
private: |
|
950 |
NetworkPerformance(); |
|
951 |
NetworkPerformance(const NetworkPerformance& rhs); // no impl |
|
952 |
NetworkPerformance& operator=(const NetworkPerformance& rhs); // no impl |
|
953 |
bool initialize(); |
|
954 |
~NetworkPerformance(); |
|
955 |
int64_t read_counter(const char* iface, const char* counter) const; |
|
956 |
int network_utilization(NetworkInterface** network_interfaces) const; |
|
957 |
}; |
|
958 |
||
959 |
NetworkPerformanceInterface::NetworkPerformance::NetworkPerformance() { |
|
960 |
||
961 |
} |
|
962 |
||
963 |
bool NetworkPerformanceInterface::NetworkPerformance::initialize() { |
|
964 |
return true; |
|
965 |
} |
|
966 |
||
967 |
NetworkPerformanceInterface::NetworkPerformance::~NetworkPerformance() { |
|
968 |
} |
|
969 |
||
970 |
int64_t NetworkPerformanceInterface::NetworkPerformance::read_counter(const char* iface, const char* counter) const { |
|
971 |
char buf[128]; |
|
972 |
||
973 |
snprintf(buf, sizeof(buf), "/sys/class/net/%s/statistics/%s", iface, counter); |
|
974 |
||
53911
65f2a401e0eb
8218811: replace open by os::open in hotspot coding
mbaesken
parents:
53882
diff
changeset
|
975 |
int fd = os::open(buf, O_RDONLY, 0); |
50879 | 976 |
if (fd == -1) { |
977 |
return -1; |
|
978 |
} |
|
979 |
||
980 |
ssize_t num_bytes = read(fd, buf, sizeof(buf)); |
|
981 |
close(fd); |
|
982 |
if ((num_bytes == -1) || (num_bytes >= static_cast<ssize_t>(sizeof(buf))) || (num_bytes < 1)) { |
|
983 |
return -1; |
|
984 |
} |
|
985 |
||
986 |
buf[num_bytes] = '\0'; |
|
987 |
int64_t value = strtoll(buf, NULL, 10); |
|
988 |
||
989 |
return value; |
|
990 |
} |
|
991 |
||
992 |
int NetworkPerformanceInterface::NetworkPerformance::network_utilization(NetworkInterface** network_interfaces) const |
|
993 |
{ |
|
994 |
ifaddrs* addresses; |
|
995 |
ifaddrs* cur_address; |
|
996 |
||
997 |
if (getifaddrs(&addresses) != 0) { |
|
998 |
return OS_ERR; |
|
999 |
} |
|
1000 |
||
1001 |
NetworkInterface* ret = NULL; |
|
1002 |
for (cur_address = addresses; cur_address != NULL; cur_address = cur_address->ifa_next) { |
|
51360
d2c720caa480
8208676: Missing NULL check and resource leak in NetworkPerformanceInterface::NetworkPerformance::network_utilization
rwestberg
parents:
50879
diff
changeset
|
1003 |
if ((cur_address->ifa_addr == NULL) || (cur_address->ifa_addr->sa_family != AF_PACKET)) { |
50879 | 1004 |
continue; |
1005 |
} |
|
1006 |
||
1007 |
int64_t bytes_in = read_counter(cur_address->ifa_name, "rx_bytes"); |
|
1008 |
int64_t bytes_out = read_counter(cur_address->ifa_name, "tx_bytes"); |
|
1009 |
||
1010 |
NetworkInterface* cur = new NetworkInterface(cur_address->ifa_name, bytes_in, bytes_out, ret); |
|
1011 |
ret = cur; |
|
1012 |
} |
|
1013 |
||
51360
d2c720caa480
8208676: Missing NULL check and resource leak in NetworkPerformanceInterface::NetworkPerformance::network_utilization
rwestberg
parents:
50879
diff
changeset
|
1014 |
freeifaddrs(addresses); |
50879 | 1015 |
*network_interfaces = ret; |
1016 |
||
1017 |
return OS_OK; |
|
1018 |
} |
|
1019 |
||
1020 |
NetworkPerformanceInterface::NetworkPerformanceInterface() { |
|
1021 |
_impl = NULL; |
|
1022 |
} |
|
1023 |
||
1024 |
NetworkPerformanceInterface::~NetworkPerformanceInterface() { |
|
1025 |
if (_impl != NULL) { |
|
1026 |
delete _impl; |
|
1027 |
} |
|
1028 |
} |
|
1029 |
||
1030 |
bool NetworkPerformanceInterface::initialize() { |
|
1031 |
_impl = new NetworkPerformanceInterface::NetworkPerformance(); |
|
58282
03fce7b04b42
8230395: Code checks for NULL value returned from NEW_C_HEAP_ARRAY which can not happen
dholmes
parents:
58083
diff
changeset
|
1032 |
return _impl->initialize(); |
50879 | 1033 |
} |
1034 |
||
1035 |
int NetworkPerformanceInterface::network_utilization(NetworkInterface** network_interfaces) const { |
|
1036 |
return _impl->network_utilization(network_interfaces); |
|
1037 |
} |