--- a/jdk/src/java.management/unix/native/libmanagement/OperatingSystemImpl.c Wed Apr 15 13:27:39 2015 +0200
+++ /dev/null Thu Jan 01 00:00:00 1970 +0000
@@ -1,479 +0,0 @@
-/*
- * Copyright (c) 2003, 2014, 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 "jni.h"
-#include "jni_util.h"
-#include "jlong.h"
-#include "jvm.h"
-#include "management.h"
-#include "sun_management_OperatingSystemImpl.h"
-
-#include <sys/types.h>
-#include <sys/stat.h>
-#if defined(_ALLBSD_SOURCE)
-#include <sys/sysctl.h>
-#ifdef __APPLE__
-#include <sys/param.h>
-#include <sys/mount.h>
-#include <mach/mach.h>
-#include <sys/proc_info.h>
-#include <libproc.h>
-#endif
-#elif !defined(_AIX)
-#include <sys/swap.h>
-#endif
-#include <sys/resource.h>
-#include <sys/times.h>
-#ifndef _ALLBSD_SOURCE
-#include <sys/sysinfo.h>
-#endif
-#include <ctype.h>
-#include <dirent.h>
-#include <errno.h>
-#include <fcntl.h>
-#include <limits.h>
-#include <stdlib.h>
-#include <unistd.h>
-
-#if defined(_AIX)
-#include <libperfstat.h>
-#endif
-
-static jlong page_size = 0;
-
-#if defined(_ALLBSD_SOURCE) || defined(_AIX)
-#define MB (1024UL * 1024UL)
-#else
-
-/* This gets us the new structured proc interfaces of 5.6 & later */
-/* - see comment in <sys/procfs.h> */
-#define _STRUCTURED_PROC 1
-#include <sys/procfs.h>
-
-#endif /* _ALLBSD_SOURCE */
-
-static struct dirent* read_dir(DIR* dirp, struct dirent* entry) {
-#ifdef __solaris__
- struct dirent* dbuf = readdir(dirp);
- return dbuf;
-#else /* __linux__ || _ALLBSD_SOURCE */
- struct dirent* p;
- if (readdir_r(dirp, entry, &p) == 0) {
- return p;
- } else {
- return NULL;
- }
-#endif
-}
-
-// true = get available swap in bytes
-// false = get total swap in bytes
-static jlong get_total_or_available_swap_space_size(JNIEnv* env, jboolean available) {
-#ifdef __solaris__
- long total, avail;
- int nswap, i, count;
- swaptbl_t *stbl;
- char *strtab;
-
- // First get the number of swap resource entries
- if ((nswap = swapctl(SC_GETNSWP, NULL)) == -1) {
- throw_internal_error(env, "swapctl failed to get nswap");
- return -1;
- }
- if (nswap == 0) {
- return 0;
- }
-
- // Allocate storage for resource entries
- stbl = (swaptbl_t*) malloc(nswap * sizeof(swapent_t) +
- sizeof(struct swaptable));
- if (stbl == NULL) {
- JNU_ThrowOutOfMemoryError(env, 0);
- return -1;
- }
-
- // Allocate storage for the table
- strtab = (char*) malloc((nswap + 1) * MAXPATHLEN);
- if (strtab == NULL) {
- free(stbl);
- JNU_ThrowOutOfMemoryError(env, 0);
- return -1;
- }
-
- for (i = 0; i < (nswap + 1); i++) {
- stbl->swt_ent[i].ste_path = strtab + (i * MAXPATHLEN);
- }
- stbl->swt_n = nswap + 1;
-
- // Get the entries
- if ((count = swapctl(SC_LIST, stbl)) < 0) {
- free(stbl);
- free(strtab);
- throw_internal_error(env, "swapctl failed to get swap list");
- return -1;
- }
-
- // Sum the entries to get total and free swap
- total = 0;
- avail = 0;
- for (i = 0; i < count; i++) {
- total += stbl->swt_ent[i].ste_pages;
- avail += stbl->swt_ent[i].ste_free;
- }
-
- free(stbl);
- free(strtab);
- return available ? ((jlong)avail * page_size) :
- ((jlong)total * page_size);
-#elif defined(__linux__)
- int ret;
- FILE *fp;
- jlong total = 0, avail = 0;
-
- struct sysinfo si;
- ret = sysinfo(&si);
- if (ret != 0) {
- throw_internal_error(env, "sysinfo failed to get swap size");
- }
- total = (jlong)si.totalswap * si.mem_unit;
- avail = (jlong)si.freeswap * si.mem_unit;
-
- return available ? avail : total;
-#elif defined(__APPLE__)
- struct xsw_usage vmusage;
- size_t size = sizeof(vmusage);
- if (sysctlbyname("vm.swapusage", &vmusage, &size, NULL, 0) != 0) {
- throw_internal_error(env, "sysctlbyname failed");
- }
- return available ? (jlong)vmusage.xsu_avail : (jlong)vmusage.xsu_total;
-#else /* _ALLBSD_SOURCE */
- /*
- * XXXBSD: there's no way available to get swap info in
- * FreeBSD. Usage of libkvm is not an option here
- */
- // throw_internal_error(env, "Unimplemented in FreeBSD");
- return (0);
-#endif
-}
-
-JNIEXPORT void JNICALL
-Java_sun_management_OperatingSystemImpl_initialize0
- (JNIEnv *env, jclass cls)
-{
- page_size = sysconf(_SC_PAGESIZE);
-}
-
-JNIEXPORT jlong JNICALL
-Java_sun_management_OperatingSystemImpl_getCommittedVirtualMemorySize0
- (JNIEnv *env, jobject mbean)
-{
-#ifdef __solaris__
- psinfo_t psinfo;
- ssize_t result;
- size_t remaining;
- char* addr;
- int fd;
-
- fd = open64("/proc/self/psinfo", O_RDONLY, 0);
- if (fd < 0) {
- throw_internal_error(env, "Unable to open /proc/self/psinfo");
- return -1;
- }
-
- addr = (char *)&psinfo;
- for (remaining = sizeof(psinfo_t); remaining > 0;) {
- result = read(fd, addr, remaining);
- if (result < 0) {
- if (errno != EINTR) {
- close(fd);
- throw_internal_error(env, "Unable to read /proc/self/psinfo");
- return -1;
- }
- } else {
- remaining -= result;
- addr += result;
- }
- }
-
- close(fd);
- return (jlong) psinfo.pr_size * 1024;
-#elif defined(__linux__)
- FILE *fp;
- unsigned long vsize = 0;
-
- if ((fp = fopen("/proc/self/stat", "r")) == NULL) {
- throw_internal_error(env, "Unable to open /proc/self/stat");
- return -1;
- }
-
- // Ignore everything except the vsize entry
- if (fscanf(fp, "%*d %*s %*c %*d %*d %*d %*d %*d %*u %*u %*u %*u %*u %*d %*d %*d %*d %*d %*d %*u %*u %*d %lu %*[^\n]\n", &vsize) == EOF) {
- throw_internal_error(env, "Unable to get virtual memory usage");
- fclose(fp);
- return -1;
- }
-
- fclose(fp);
- return (jlong)vsize;
-#elif defined(__APPLE__)
- struct task_basic_info t_info;
- mach_msg_type_number_t t_info_count = TASK_BASIC_INFO_COUNT;
-
- kern_return_t res = task_info(mach_task_self(), TASK_BASIC_INFO, (task_info_t)&t_info, &t_info_count);
- if (res != KERN_SUCCESS) {
- throw_internal_error(env, "task_info failed");
- }
- return t_info.virtual_size;
-#else /* _ALLBSD_SOURCE */
- /*
- * XXXBSD: there's no way available to do it in FreeBSD, AFAIK.
- */
- // throw_internal_error(env, "Unimplemented in FreeBSD");
- return (64 * MB);
-#endif
-}
-
-JNIEXPORT jlong JNICALL
-Java_sun_management_OperatingSystemImpl_getTotalSwapSpaceSize0
- (JNIEnv *env, jobject mbean)
-{
- return get_total_or_available_swap_space_size(env, JNI_FALSE);
-}
-
-JNIEXPORT jlong JNICALL
-Java_sun_management_OperatingSystemImpl_getFreeSwapSpaceSize0
- (JNIEnv *env, jobject mbean)
-{
- return get_total_or_available_swap_space_size(env, JNI_TRUE);
-}
-
-JNIEXPORT jlong JNICALL
-Java_sun_management_OperatingSystemImpl_getProcessCpuTime0
- (JNIEnv *env, jobject mbean)
-{
-#ifdef __APPLE__
- struct rusage usage;
- if (getrusage(RUSAGE_SELF, &usage) != 0) {
- throw_internal_error(env, "getrusage failed");
- return -1;
- }
- jlong microsecs =
- usage.ru_utime.tv_sec * 1000 * 1000 + usage.ru_utime.tv_usec +
- usage.ru_stime.tv_sec * 1000 * 1000 + usage.ru_stime.tv_usec;
- return microsecs * 1000;
-#else
- jlong clk_tck, ns_per_clock_tick;
- jlong cpu_time_ns;
- struct tms time;
-
- /*
- * BSDNOTE: FreeBSD implements _SC_CLK_TCK since FreeBSD 5, so
- * add a magic to handle it
- */
-#if defined(__solaris__) || defined(_SC_CLK_TCK)
- clk_tck = (jlong) sysconf(_SC_CLK_TCK);
-#elif defined(__linux__) || defined(_ALLBSD_SOURCE)
- clk_tck = 100;
-#endif
- if (clk_tck == -1) {
- throw_internal_error(env,
- "sysconf failed - not able to get clock tick");
- return -1;
- }
-
- times(&time);
- ns_per_clock_tick = (jlong) 1000 * 1000 * 1000 / (jlong) clk_tck;
- cpu_time_ns = ((jlong)time.tms_utime + (jlong) time.tms_stime) *
- ns_per_clock_tick;
- return cpu_time_ns;
-#endif
-}
-
-JNIEXPORT jlong JNICALL
-Java_sun_management_OperatingSystemImpl_getFreePhysicalMemorySize0
- (JNIEnv *env, jobject mbean)
-{
-#ifdef __APPLE__
- mach_msg_type_number_t count;
- vm_statistics_data_t vm_stats;
- kern_return_t res;
-
- count = HOST_VM_INFO_COUNT;
- res = host_statistics(mach_host_self(), HOST_VM_INFO, (host_info_t)&vm_stats, &count);
- if (res != KERN_SUCCESS) {
- throw_internal_error(env, "host_statistics failed");
- return -1;
- }
- return (jlong)vm_stats.free_count * page_size;
-#elif defined(_ALLBSD_SOURCE)
- /*
- * XXBSDL no way to do it in FreeBSD
- */
- // throw_internal_error(env, "unimplemented in FreeBSD")
- return (128 * MB);
-#elif defined(_AIX)
- perfstat_memory_total_t memory_info;
- if (-1 != perfstat_memory_total(NULL, &memory_info, sizeof(perfstat_memory_total_t), 1)) {
- return (jlong)(memory_info.real_free * 4L * 1024L);
- }
- return -1;
-#else // solaris / linux
- jlong num_avail_physical_pages = sysconf(_SC_AVPHYS_PAGES);
- return (num_avail_physical_pages * page_size);
-#endif
-}
-
-JNIEXPORT jlong JNICALL
-Java_sun_management_OperatingSystemImpl_getTotalPhysicalMemorySize0
- (JNIEnv *env, jobject mbean)
-{
-#ifdef _ALLBSD_SOURCE
- jlong result = 0;
- int mib[2];
- size_t rlen;
-
- mib[0] = CTL_HW;
- mib[1] = HW_MEMSIZE;
- rlen = sizeof(result);
- if (sysctl(mib, 2, &result, &rlen, NULL, 0) != 0) {
- throw_internal_error(env, "sysctl failed");
- return -1;
- }
- return result;
-#elif defined(_AIX)
- perfstat_memory_total_t memory_info;
- if (-1 != perfstat_memory_total(NULL, &memory_info, sizeof(perfstat_memory_total_t), 1)) {
- return (jlong)(memory_info.real_total * 4L * 1024L);
- }
- return -1;
-#else // solaris / linux
- jlong num_physical_pages = sysconf(_SC_PHYS_PAGES);
- return (num_physical_pages * page_size);
-#endif
-}
-
-
-
-JNIEXPORT jlong JNICALL
-Java_sun_management_OperatingSystemImpl_getOpenFileDescriptorCount0
- (JNIEnv *env, jobject mbean)
-{
-#ifdef __APPLE__
- // This code is influenced by the darwin lsof source
- pid_t my_pid;
- struct proc_bsdinfo bsdinfo;
- struct proc_fdinfo *fds;
- int nfiles;
- kern_return_t kres;
- int res;
- size_t fds_size;
-
- kres = pid_for_task(mach_task_self(), &my_pid);
- if (kres != KERN_SUCCESS) {
- throw_internal_error(env, "pid_for_task failed");
- return -1;
- }
-
- // get the maximum number of file descriptors
- res = proc_pidinfo(my_pid, PROC_PIDTBSDINFO, 0, &bsdinfo, PROC_PIDTBSDINFO_SIZE);
- if (res <= 0) {
- throw_internal_error(env, "proc_pidinfo with PROC_PIDTBSDINFO failed");
- return -1;
- }
-
- // allocate memory to hold the fd information (we don't acutally use this information
- // but need it to get the number of open files)
- fds_size = bsdinfo.pbi_nfiles * sizeof(struct proc_fdinfo);
- fds = malloc(fds_size);
- if (fds == NULL) {
- JNU_ThrowOutOfMemoryError(env, "could not allocate space for file descriptors");
- return -1;
- }
-
- // get the list of open files - the return value is the number of bytes
- // proc_pidinfo filled in
- res = proc_pidinfo(my_pid, PROC_PIDLISTFDS, 0, fds, fds_size);
- if (res <= 0) {
- free(fds);
- throw_internal_error(env, "proc_pidinfo failed for PROC_PIDLISTFDS");
- return -1;
- }
- nfiles = res / sizeof(struct proc_fdinfo);
- free(fds);
-
- return nfiles;
-#elif defined(_ALLBSD_SOURCE)
- /*
- * XXXBSD: there's no way available to do it in FreeBSD, AFAIK.
- */
- // throw_internal_error(env, "Unimplemented in FreeBSD");
- return (100);
-#else /* solaris/linux */
- DIR *dirp;
- struct dirent dbuf;
- struct dirent* dentp;
- jlong fds = 0;
-
-#if defined(_AIX)
-/* AIX does not understand '/proc/self' - it requires the real process ID */
-#define FD_DIR aix_fd_dir
- char aix_fd_dir[32]; /* the pid has at most 19 digits */
- snprintf(aix_fd_dir, 32, "/proc/%d/fd", getpid());
-#else
-#define FD_DIR "/proc/self/fd"
-#endif
-
- dirp = opendir(FD_DIR);
- if (dirp == NULL) {
- throw_internal_error(env, "Unable to open directory /proc/self/fd");
- return -1;
- }
-
- // iterate through directory entries, skipping '.' and '..'
- // each entry represents an open file descriptor.
- while ((dentp = read_dir(dirp, &dbuf)) != NULL) {
- if (isdigit(dentp->d_name[0])) {
- fds++;
- }
- }
-
- closedir(dirp);
- // subtract by 1 which was the fd open for this implementation
- return (fds - 1);
-#endif
-}
-
-JNIEXPORT jlong JNICALL
-Java_sun_management_OperatingSystemImpl_getMaxFileDescriptorCount0
- (JNIEnv *env, jobject mbean)
-{
- struct rlimit rlp;
-
- if (getrlimit(RLIMIT_NOFILE, &rlp) == -1) {
- throw_internal_error(env, "getrlimit failed");
- return -1;
- }
- return (jlong) rlp.rlim_cur;
-}