mirror of https://github.com/xzeldon/htop.git
1795 lines
55 KiB
C
1795 lines
55 KiB
C
/*
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htop - LinuxProcessList.c
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(C) 2014 Hisham H. Muhammad
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Released under the GNU GPLv2, see the COPYING file
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in the source distribution for its full text.
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*/
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#include "config.h" // IWYU pragma: keep
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#include "LinuxProcessList.h"
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#include <assert.h>
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#include <dirent.h>
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#include <errno.h>
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#include <fcntl.h>
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#include <math.h>
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#include <stdbool.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <strings.h>
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#include <unistd.h>
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#include <sys/stat.h>
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#include <sys/time.h>
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#include <sys/types.h>
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#ifdef HAVE_DELAYACCT
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#include <linux/netlink.h>
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#include <linux/taskstats.h>
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#include <netlink/attr.h>
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#include <netlink/handlers.h>
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#include <netlink/msg.h>
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#include <netlink/netlink.h>
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#include <netlink/socket.h>
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#include <netlink/genl/genl.h>
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#include <netlink/genl/ctrl.h>
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#endif
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#include "CRT.h"
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#include "Compat.h"
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#include "LinuxProcess.h"
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#include "Macros.h"
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#include "Object.h"
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#include "Process.h"
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#include "Settings.h"
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#include "XUtils.h"
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#ifdef MAJOR_IN_MKDEV
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#include <sys/mkdev.h>
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#elif defined(MAJOR_IN_SYSMACROS)
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#include <sys/sysmacros.h>
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#endif
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#ifdef HAVE_LIBSENSORS
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#include <sensors/sensors.h>
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#endif
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static ssize_t xread(int fd, void* buf, size_t count) {
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// Read some bytes. Retry on EINTR and when we don't get as many bytes as we requested.
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size_t alreadyRead = 0;
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for (;;) {
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ssize_t res = read(fd, buf, count);
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if (res == -1) {
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if (errno == EINTR)
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continue;
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return -1;
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}
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if (res > 0) {
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buf = ((char*)buf) + res;
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count -= res;
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alreadyRead += res;
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}
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if (count == 0 || res == 0) {
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return alreadyRead;
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}
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}
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}
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static int sortTtyDrivers(const void* va, const void* vb) {
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const TtyDriver* a = (const TtyDriver*) va;
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const TtyDriver* b = (const TtyDriver*) vb;
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int r = SPACESHIP_NUMBER(a->major, b->major);
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if (r)
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return r;
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return SPACESHIP_NUMBER(a->minorFrom, b->minorFrom);
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}
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static void LinuxProcessList_initTtyDrivers(LinuxProcessList* this) {
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TtyDriver* ttyDrivers;
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int fd = open(PROCTTYDRIVERSFILE, O_RDONLY);
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if (fd == -1)
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return;
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char* buf = NULL;
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int bufSize = MAX_READ;
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int bufLen = 0;
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for (;;) {
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buf = xRealloc(buf, bufSize);
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int size = xread(fd, buf + bufLen, MAX_READ);
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if (size <= 0) {
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buf[bufLen] = '\0';
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close(fd);
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break;
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}
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bufLen += size;
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bufSize += MAX_READ;
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}
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if (bufLen == 0) {
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free(buf);
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return;
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}
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int numDrivers = 0;
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int allocd = 10;
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ttyDrivers = xMalloc(sizeof(TtyDriver) * allocd);
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char* at = buf;
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while (*at != '\0') {
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at = strchr(at, ' '); // skip first token
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while (*at == ' ') at++; // skip spaces
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char* token = at; // mark beginning of path
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at = strchr(at, ' '); // find end of path
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*at = '\0'; at++; // clear and skip
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ttyDrivers[numDrivers].path = xStrdup(token); // save
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while (*at == ' ') at++; // skip spaces
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token = at; // mark beginning of major
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at = strchr(at, ' '); // find end of major
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*at = '\0'; at++; // clear and skip
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ttyDrivers[numDrivers].major = atoi(token); // save
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while (*at == ' ') at++; // skip spaces
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token = at; // mark beginning of minorFrom
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while (*at >= '0' && *at <= '9') at++; //find end of minorFrom
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if (*at == '-') { // if has range
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*at = '\0'; at++; // clear and skip
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ttyDrivers[numDrivers].minorFrom = atoi(token); // save
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token = at; // mark beginning of minorTo
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at = strchr(at, ' '); // find end of minorTo
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*at = '\0'; at++; // clear and skip
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ttyDrivers[numDrivers].minorTo = atoi(token); // save
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} else { // no range
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*at = '\0'; at++; // clear and skip
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ttyDrivers[numDrivers].minorFrom = atoi(token); // save
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ttyDrivers[numDrivers].minorTo = atoi(token); // save
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}
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at = strchr(at, '\n'); // go to end of line
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at++; // skip
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numDrivers++;
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if (numDrivers == allocd) {
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allocd += 10;
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ttyDrivers = xRealloc(ttyDrivers, sizeof(TtyDriver) * allocd);
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}
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}
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free(buf);
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numDrivers++;
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ttyDrivers = xRealloc(ttyDrivers, sizeof(TtyDriver) * numDrivers);
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ttyDrivers[numDrivers - 1].path = NULL;
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qsort(ttyDrivers, numDrivers - 1, sizeof(TtyDriver), sortTtyDrivers);
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this->ttyDrivers = ttyDrivers;
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}
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#ifdef HAVE_DELAYACCT
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static void LinuxProcessList_initNetlinkSocket(LinuxProcessList* this) {
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this->netlink_socket = nl_socket_alloc();
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if (this->netlink_socket == NULL) {
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return;
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}
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if (nl_connect(this->netlink_socket, NETLINK_GENERIC) < 0) {
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return;
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}
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this->netlink_family = genl_ctrl_resolve(this->netlink_socket, TASKSTATS_GENL_NAME);
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}
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#endif
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static int LinuxProcessList_computeCPUcount(void) {
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FILE* file = fopen(PROCSTATFILE, "r");
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if (file == NULL) {
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CRT_fatalError("Cannot open " PROCSTATFILE);
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}
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int cpus = 0;
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char buffer[PROC_LINE_LENGTH + 1];
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while (fgets(buffer, sizeof(buffer), file)) {
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if (String_startsWith(buffer, "cpu")) {
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cpus++;
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}
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}
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fclose(file);
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/* subtract raw cpu entry */
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if (cpus > 0) {
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cpus--;
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}
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return cpus;
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}
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static void LinuxProcessList_updateCPUcount(LinuxProcessList* this) {
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ProcessList* pl = &(this->super);
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int cpus = LinuxProcessList_computeCPUcount();
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if (cpus == 0 || cpus == pl->cpuCount)
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return;
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pl->cpuCount = cpus;
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free(this->cpus);
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this->cpus = xCalloc(cpus + 1, sizeof(CPUData));
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for (int i = 0; i <= cpus; i++) {
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this->cpus[i].totalTime = 1;
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this->cpus[i].totalPeriod = 1;
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}
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}
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ProcessList* ProcessList_new(UsersTable* usersTable, Hashtable* pidMatchList, uid_t userId) {
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LinuxProcessList* this = xCalloc(1, sizeof(LinuxProcessList));
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ProcessList* pl = &(this->super);
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ProcessList_init(pl, Class(LinuxProcess), usersTable, pidMatchList, userId);
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LinuxProcessList_initTtyDrivers(this);
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#ifdef HAVE_DELAYACCT
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LinuxProcessList_initNetlinkSocket(this);
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#endif
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// Check for /proc/*/smaps_rollup availability (improves smaps parsing speed, Linux 4.14+)
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FILE* file = fopen(PROCDIR "/self/smaps_rollup", "r");
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if (file != NULL) {
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this->haveSmapsRollup = true;
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fclose(file);
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} else {
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this->haveSmapsRollup = false;
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}
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// Read btime
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{
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FILE* statfile = fopen(PROCSTATFILE, "r");
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if (statfile == NULL) {
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CRT_fatalError("Cannot open " PROCSTATFILE);
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}
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while (true) {
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char buffer[PROC_LINE_LENGTH + 1];
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if (fgets(buffer, sizeof(buffer), statfile) == NULL) {
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CRT_fatalError("No btime in " PROCSTATFILE);
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} else if (String_startsWith(buffer, "btime ")) {
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if (sscanf(buffer, "btime %lld\n", &btime) != 1) {
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CRT_fatalError("Failed to parse btime from " PROCSTATFILE);
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}
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break;
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}
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}
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fclose(statfile);
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}
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// Initialize CPU count
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{
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int cpus = LinuxProcessList_computeCPUcount();
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pl->cpuCount = MAXIMUM(cpus, 1);
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this->cpus = xCalloc(cpus + 1, sizeof(CPUData));
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for (int i = 0; i <= cpus; i++) {
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this->cpus[i].totalTime = 1;
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this->cpus[i].totalPeriod = 1;
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}
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}
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return pl;
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}
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void ProcessList_delete(ProcessList* pl) {
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LinuxProcessList* this = (LinuxProcessList*) pl;
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ProcessList_done(pl);
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free(this->cpus);
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if (this->ttyDrivers) {
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for (int i = 0; this->ttyDrivers[i].path; i++) {
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free(this->ttyDrivers[i].path);
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}
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free(this->ttyDrivers);
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}
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#ifdef HAVE_DELAYACCT
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if (this->netlink_socket) {
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nl_close(this->netlink_socket);
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nl_socket_free(this->netlink_socket);
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}
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#endif
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free(this);
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}
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static inline unsigned long long LinuxProcess_adjustTime(unsigned long long t) {
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static long jiffy = -1;
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if (jiffy == -1) {
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errno = 0;
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jiffy = sysconf(_SC_CLK_TCK);
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if (errno || -1 == jiffy) {
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jiffy = -1;
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return t; // Assume 100Hz clock
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}
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}
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return t * 100 / jiffy;
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}
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static bool LinuxProcessList_readStatFile(Process* process, const char* dirname, const char* name, char* command, int* commLen) {
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LinuxProcess* lp = (LinuxProcess*) process;
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const int commLenIn = *commLen;
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*commLen = 0;
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char filename[MAX_NAME + 1];
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xSnprintf(filename, MAX_NAME, "%s/%s/stat", dirname, name);
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int fd = open(filename, O_RDONLY);
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if (fd == -1)
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return false;
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static char buf[MAX_READ + 1];
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int size = xread(fd, buf, MAX_READ);
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close(fd);
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if (size <= 0)
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return false;
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buf[size] = '\0';
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assert(process->pid == atoi(buf));
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char* location = strchr(buf, ' ');
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if (!location)
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return false;
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location += 2;
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char* end = strrchr(location, ')');
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if (!end)
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return false;
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int commsize = MINIMUM(end - location, commLenIn - 1);
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// deepcode ignore BufferOverflow: commsize is bounded by the allocated length passed in by commLen, saved into commLenIn
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memcpy(command, location, commsize);
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command[commsize] = '\0';
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*commLen = commsize;
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location = end + 2;
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process->state = location[0];
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location += 2;
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process->ppid = strtol(location, &location, 10);
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location += 1;
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process->pgrp = strtoul(location, &location, 10);
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location += 1;
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process->session = strtoul(location, &location, 10);
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location += 1;
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process->tty_nr = strtoul(location, &location, 10);
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location += 1;
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process->tpgid = strtol(location, &location, 10);
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location += 1;
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process->flags = strtoul(location, &location, 10);
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location += 1;
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process->minflt = strtoull(location, &location, 10);
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location += 1;
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lp->cminflt = strtoull(location, &location, 10);
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location += 1;
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process->majflt = strtoull(location, &location, 10);
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location += 1;
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lp->cmajflt = strtoull(location, &location, 10);
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location += 1;
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lp->utime = LinuxProcess_adjustTime(strtoull(location, &location, 10));
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location += 1;
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lp->stime = LinuxProcess_adjustTime(strtoull(location, &location, 10));
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location += 1;
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lp->cutime = LinuxProcess_adjustTime(strtoull(location, &location, 10));
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location += 1;
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lp->cstime = LinuxProcess_adjustTime(strtoull(location, &location, 10));
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location += 1;
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process->priority = strtol(location, &location, 10);
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location += 1;
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process->nice = strtol(location, &location, 10);
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location += 1;
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process->nlwp = strtol(location, &location, 10);
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location += 1;
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location = strchr(location, ' ') + 1;
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if (process->starttime_ctime == 0) {
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process->starttime_ctime = btime + LinuxProcess_adjustTime(strtoll(location, &location, 10)) / 100;
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} else {
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location = strchr(location, ' ') + 1;
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}
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location += 1;
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for (int i = 0; i < 15; i++) {
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location = strchr(location, ' ') + 1;
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}
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process->exit_signal = strtol(location, &location, 10);
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location += 1;
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assert(location != NULL);
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process->processor = strtol(location, &location, 10);
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process->time = lp->utime + lp->stime;
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return true;
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}
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static bool LinuxProcessList_statProcessDir(Process* process, const char* dirname, const char* name) {
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char filename[MAX_NAME + 1];
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filename[MAX_NAME] = '\0';
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xSnprintf(filename, MAX_NAME, "%s/%s", dirname, name);
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struct stat sstat;
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int statok = stat(filename, &sstat);
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if (statok == -1)
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return false;
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process->st_uid = sstat.st_uid;
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return true;
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}
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#ifdef HAVE_TASKSTATS
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static void LinuxProcessList_readIoFile(LinuxProcess* process, const char* dirname, const char* name, unsigned long long now) {
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char filename[MAX_NAME + 1];
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filename[MAX_NAME] = '\0';
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xSnprintf(filename, MAX_NAME, "%s/%s/io", dirname, name);
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int fd = open(filename, O_RDONLY);
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if (fd == -1) {
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process->io_rate_read_bps = NAN;
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process->io_rate_write_bps = NAN;
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process->io_rchar = -1LL;
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process->io_wchar = -1LL;
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process->io_syscr = -1LL;
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process->io_syscw = -1LL;
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process->io_read_bytes = -1LL;
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process->io_write_bytes = -1LL;
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process->io_cancelled_write_bytes = -1LL;
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process->io_rate_read_time = -1LL;
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process->io_rate_write_time = -1LL;
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return;
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}
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char buffer[1024];
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ssize_t buflen = xread(fd, buffer, 1023);
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close(fd);
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if (buflen < 1)
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return;
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buffer[buflen] = '\0';
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unsigned long long last_read = process->io_read_bytes;
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unsigned long long last_write = process->io_write_bytes;
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char* buf = buffer;
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char* line = NULL;
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while ((line = strsep(&buf, "\n")) != NULL) {
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switch (line[0]) {
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case 'r':
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if (line[1] == 'c' && String_startsWith(line + 2, "har: ")) {
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process->io_rchar = strtoull(line + 7, NULL, 10);
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} else if (String_startsWith(line + 1, "ead_bytes: ")) {
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process->io_read_bytes = strtoull(line + 12, NULL, 10);
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process->io_rate_read_bps =
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((double)(process->io_read_bytes - last_read)) / (((double)(now - process->io_rate_read_time)) / 1000);
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process->io_rate_read_time = now;
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}
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break;
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case 'w':
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if (line[1] == 'c' && String_startsWith(line + 2, "har: ")) {
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process->io_wchar = strtoull(line + 7, NULL, 10);
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} else if (String_startsWith(line + 1, "rite_bytes: ")) {
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process->io_write_bytes = strtoull(line + 13, NULL, 10);
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process->io_rate_write_bps =
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((double)(process->io_write_bytes - last_write)) / (((double)(now - process->io_rate_write_time)) / 1000);
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process->io_rate_write_time = now;
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}
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break;
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case 's':
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if (line[4] == 'r' && String_startsWith(line + 1, "yscr: ")) {
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process->io_syscr = strtoull(line + 7, NULL, 10);
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} else if (String_startsWith(line + 1, "yscw: ")) {
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process->io_syscw = strtoull(line + 7, NULL, 10);
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}
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break;
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case 'c':
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if (String_startsWith(line + 1, "ancelled_write_bytes: ")) {
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process->io_cancelled_write_bytes = strtoull(line + 23, NULL, 10);
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}
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}
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}
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}
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#endif
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static bool LinuxProcessList_readStatmFile(LinuxProcess* process, const char* dirname, const char* name) {
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char filename[MAX_NAME + 1];
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xSnprintf(filename, sizeof(filename), "%s/%s/statm", dirname, name);
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FILE* statmfile = fopen(filename, "r");
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if (!statmfile)
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return false;
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int r = fscanf(statmfile, "%ld %ld %ld %ld %ld %ld %ld",
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&process->super.m_virt,
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&process->super.m_resident,
|
|
&process->m_share,
|
|
&process->m_trs,
|
|
&process->m_lrs,
|
|
&process->m_drs,
|
|
&process->m_dt);
|
|
fclose(statmfile);
|
|
return r == 7;
|
|
}
|
|
|
|
static bool LinuxProcessList_readSmapsFile(LinuxProcess* process, const char* dirname, const char* name, bool haveSmapsRollup) {
|
|
//http://elixir.free-electrons.com/linux/v4.10/source/fs/proc/task_mmu.c#L719
|
|
//kernel will return data in chunks of size PAGE_SIZE or less.
|
|
|
|
char buffer[256];
|
|
|
|
if (haveSmapsRollup) {// only available in Linux 4.14+
|
|
xSnprintf(buffer, sizeof(buffer), "%s/%s/smaps_rollup", dirname, name);
|
|
} else {
|
|
xSnprintf(buffer, sizeof(buffer), "%s/%s/smaps", dirname, name);
|
|
}
|
|
|
|
FILE* f = fopen(buffer, "r");
|
|
if (!f)
|
|
return false;
|
|
|
|
process->m_pss = 0;
|
|
process->m_swap = 0;
|
|
process->m_psswp = 0;
|
|
|
|
while (fgets(buffer, sizeof(buffer), f)) {
|
|
if (!strchr(buffer, '\n')) {
|
|
// Partial line, skip to end of this line
|
|
while (fgets(buffer, sizeof(buffer), f)) {
|
|
if (strchr(buffer, '\n')) {
|
|
break;
|
|
}
|
|
}
|
|
continue;
|
|
}
|
|
|
|
if (String_startsWith(buffer, "Pss:")) {
|
|
process->m_pss += strtol(buffer + 4, NULL, 10);
|
|
} else if (String_startsWith(buffer, "Swap:")) {
|
|
process->m_swap += strtol(buffer + 5, NULL, 10);
|
|
} else if (String_startsWith(buffer, "SwapPss:")) {
|
|
process->m_psswp += strtol(buffer + 8, NULL, 10);
|
|
}
|
|
}
|
|
|
|
fclose(f);
|
|
return true;
|
|
}
|
|
|
|
#ifdef HAVE_OPENVZ
|
|
|
|
static void LinuxProcessList_readOpenVZData(LinuxProcess* process, const char* dirname, const char* name) {
|
|
if ( (access(PROCDIR "/vz", R_OK) != 0)) {
|
|
free(process->ctid);
|
|
process->ctid = NULL;
|
|
process->vpid = process->super.pid;
|
|
return;
|
|
}
|
|
|
|
char filename[MAX_NAME + 1];
|
|
xSnprintf(filename, sizeof(filename), "%s/%s/status", dirname, name);
|
|
FILE* file = fopen(filename, "r");
|
|
if (!file) {
|
|
free(process->ctid);
|
|
process->ctid = NULL;
|
|
process->vpid = process->super.pid;
|
|
return;
|
|
}
|
|
|
|
bool foundEnvID = false;
|
|
bool foundVPid = false;
|
|
char linebuf[256];
|
|
while (fgets(linebuf, sizeof(linebuf), file) != NULL) {
|
|
if (strchr(linebuf, '\n') == NULL) {
|
|
// Partial line, skip to end of this line
|
|
while (fgets(linebuf, sizeof(linebuf), file) != NULL) {
|
|
if (strchr(linebuf, '\n') != NULL) {
|
|
break;
|
|
}
|
|
}
|
|
continue;
|
|
}
|
|
|
|
char* name_value_sep = strchr(linebuf, ':');
|
|
if (name_value_sep == NULL) {
|
|
continue;
|
|
}
|
|
|
|
int field;
|
|
if (0 == strncasecmp(linebuf, "envID", name_value_sep - linebuf)) {
|
|
field = 1;
|
|
} else if (0 == strncasecmp(linebuf, "VPid", name_value_sep - linebuf)) {
|
|
field = 2;
|
|
} else {
|
|
continue;
|
|
}
|
|
|
|
do {
|
|
name_value_sep++;
|
|
} while (*name_value_sep != '\0' && *name_value_sep <= 32);
|
|
|
|
char* value_end = name_value_sep;
|
|
|
|
while(*value_end > 32) {
|
|
value_end++;
|
|
}
|
|
|
|
if (name_value_sep == value_end) {
|
|
continue;
|
|
}
|
|
|
|
*value_end = '\0';
|
|
|
|
switch(field) {
|
|
case 1:
|
|
foundEnvID = true;
|
|
if (!String_eq(name_value_sep, process->ctid ? process->ctid : "")) {
|
|
free(process->ctid);
|
|
process->ctid = xStrdup(name_value_sep);
|
|
}
|
|
break;
|
|
case 2:
|
|
foundVPid = true;
|
|
process->vpid = strtoul(name_value_sep, NULL, 0);
|
|
break;
|
|
default:
|
|
//Sanity Check: Should never reach here, or the implementation is missing something!
|
|
assert(false && "OpenVZ handling: Unimplemented case for field handling reached.");
|
|
}
|
|
}
|
|
|
|
fclose(file);
|
|
|
|
if (!foundEnvID) {
|
|
free(process->ctid);
|
|
process->ctid = NULL;
|
|
}
|
|
|
|
if (!foundVPid) {
|
|
process->vpid = process->super.pid;
|
|
}
|
|
}
|
|
|
|
#endif
|
|
|
|
#ifdef HAVE_CGROUP
|
|
|
|
static void LinuxProcessList_readCGroupFile(LinuxProcess* process, const char* dirname, const char* name) {
|
|
char filename[MAX_NAME + 1];
|
|
xSnprintf(filename, MAX_NAME, "%s/%s/cgroup", dirname, name);
|
|
FILE* file = fopen(filename, "r");
|
|
if (!file) {
|
|
if (process->cgroup) {
|
|
free(process->cgroup);
|
|
process->cgroup = NULL;
|
|
}
|
|
return;
|
|
}
|
|
char output[PROC_LINE_LENGTH + 1];
|
|
output[0] = '\0';
|
|
char* at = output;
|
|
int left = PROC_LINE_LENGTH;
|
|
while (!feof(file) && left > 0) {
|
|
char buffer[PROC_LINE_LENGTH + 1];
|
|
char* ok = fgets(buffer, PROC_LINE_LENGTH, file);
|
|
if (!ok)
|
|
break;
|
|
|
|
char* group = strchr(buffer, ':');
|
|
if (!group)
|
|
break;
|
|
|
|
if (at != output) {
|
|
*at = ';';
|
|
at++;
|
|
left--;
|
|
}
|
|
int wrote = snprintf(at, left, "%s", group);
|
|
left -= wrote;
|
|
}
|
|
fclose(file);
|
|
free(process->cgroup);
|
|
process->cgroup = xStrdup(output);
|
|
}
|
|
|
|
#endif
|
|
|
|
#ifdef HAVE_VSERVER
|
|
|
|
static void LinuxProcessList_readVServerData(LinuxProcess* process, const char* dirname, const char* name) {
|
|
char filename[MAX_NAME + 1];
|
|
xSnprintf(filename, MAX_NAME, "%s/%s/status", dirname, name);
|
|
FILE* file = fopen(filename, "r");
|
|
if (!file)
|
|
return;
|
|
|
|
char buffer[PROC_LINE_LENGTH + 1];
|
|
process->vxid = 0;
|
|
while (fgets(buffer, PROC_LINE_LENGTH, file)) {
|
|
if (String_startsWith(buffer, "VxID:")) {
|
|
int vxid;
|
|
int ok = sscanf(buffer, "VxID:\t%32d", &vxid);
|
|
if (ok >= 1) {
|
|
process->vxid = vxid;
|
|
}
|
|
}
|
|
#if defined HAVE_ANCIENT_VSERVER
|
|
else if (String_startsWith(buffer, "s_context:")) {
|
|
int vxid;
|
|
int ok = sscanf(buffer, "s_context:\t%32d", &vxid);
|
|
if (ok >= 1) {
|
|
process->vxid = vxid;
|
|
}
|
|
}
|
|
#endif
|
|
}
|
|
fclose(file);
|
|
}
|
|
|
|
#endif
|
|
|
|
static void LinuxProcessList_readOomData(LinuxProcess* process, const char* dirname, const char* name) {
|
|
char filename[MAX_NAME + 1];
|
|
xSnprintf(filename, MAX_NAME, "%s/%s/oom_score", dirname, name);
|
|
FILE* file = fopen(filename, "r");
|
|
if (!file) {
|
|
return;
|
|
}
|
|
char buffer[PROC_LINE_LENGTH + 1];
|
|
if (fgets(buffer, PROC_LINE_LENGTH, file)) {
|
|
unsigned int oom;
|
|
int ok = sscanf(buffer, "%u", &oom);
|
|
if (ok >= 1) {
|
|
process->oom = oom;
|
|
}
|
|
}
|
|
fclose(file);
|
|
}
|
|
|
|
static void LinuxProcessList_readCtxtData(LinuxProcess* process, const char* dirname, const char* name) {
|
|
char filename[MAX_NAME + 1];
|
|
xSnprintf(filename, MAX_NAME, "%s/%s/status", dirname, name);
|
|
FILE* file = fopen(filename, "r");
|
|
if (!file)
|
|
return;
|
|
|
|
char buffer[PROC_LINE_LENGTH + 1];
|
|
unsigned long ctxt = 0;
|
|
while (fgets(buffer, PROC_LINE_LENGTH, file)) {
|
|
if (String_startsWith(buffer, "voluntary_ctxt_switches:")) {
|
|
unsigned long vctxt;
|
|
int ok = sscanf(buffer, "voluntary_ctxt_switches:\t%lu", &vctxt);
|
|
if (ok >= 1) {
|
|
ctxt += vctxt;
|
|
}
|
|
} else if (String_startsWith(buffer, "nonvoluntary_ctxt_switches:")) {
|
|
unsigned long nvctxt;
|
|
int ok = sscanf(buffer, "nonvoluntary_ctxt_switches:\t%lu", &nvctxt);
|
|
if (ok >= 1) {
|
|
ctxt += nvctxt;
|
|
}
|
|
}
|
|
}
|
|
fclose(file);
|
|
process->ctxt_diff = (ctxt > process->ctxt_total) ? (ctxt - process->ctxt_total) : 0;
|
|
process->ctxt_total = ctxt;
|
|
}
|
|
|
|
static void LinuxProcessList_readSecattrData(LinuxProcess* process, const char* dirname, const char* name) {
|
|
char filename[MAX_NAME + 1];
|
|
xSnprintf(filename, sizeof(filename), "%s/%s/attr/current", dirname, name);
|
|
FILE* file = fopen(filename, "r");
|
|
if (!file) {
|
|
free(process->secattr);
|
|
process->secattr = NULL;
|
|
return;
|
|
}
|
|
char buffer[PROC_LINE_LENGTH + 1];
|
|
char* res = fgets(buffer, sizeof(buffer), file);
|
|
fclose(file);
|
|
if (!res) {
|
|
free(process->secattr);
|
|
process->secattr = NULL;
|
|
return;
|
|
}
|
|
char* newline = strchr(buffer, '\n');
|
|
if (newline) {
|
|
*newline = '\0';
|
|
}
|
|
if (process->secattr && String_eq(process->secattr, buffer)) {
|
|
return;
|
|
}
|
|
free(process->secattr);
|
|
process->secattr = xStrdup(buffer);
|
|
}
|
|
|
|
#ifdef HAVE_DELAYACCT
|
|
|
|
static int handleNetlinkMsg(struct nl_msg* nlmsg, void* linuxProcess) {
|
|
struct nlmsghdr* nlhdr;
|
|
struct nlattr* nlattrs[TASKSTATS_TYPE_MAX + 1];
|
|
struct nlattr* nlattr;
|
|
struct taskstats stats;
|
|
int rem;
|
|
LinuxProcess* lp = (LinuxProcess*) linuxProcess;
|
|
|
|
nlhdr = nlmsg_hdr(nlmsg);
|
|
|
|
if (genlmsg_parse(nlhdr, 0, nlattrs, TASKSTATS_TYPE_MAX, NULL) < 0) {
|
|
return NL_SKIP;
|
|
}
|
|
|
|
if ((nlattr = nlattrs[TASKSTATS_TYPE_AGGR_PID]) || (nlattr = nlattrs[TASKSTATS_TYPE_NULL])) {
|
|
memcpy(&stats, nla_data(nla_next(nla_data(nlattr), &rem)), sizeof(stats));
|
|
assert(lp->super.pid == (pid_t)stats.ac_pid);
|
|
|
|
unsigned long long int timeDelta = stats.ac_etime * 1000 - lp->delay_read_time;
|
|
#define BOUNDS(x) (isnan(x) ? 0.0 : ((x) > 100) ? 100.0 : (x))
|
|
#define DELTAPERC(x,y) BOUNDS((float) ((x) - (y)) / timeDelta * 100)
|
|
lp->cpu_delay_percent = DELTAPERC(stats.cpu_delay_total, lp->cpu_delay_total);
|
|
lp->blkio_delay_percent = DELTAPERC(stats.blkio_delay_total, lp->blkio_delay_total);
|
|
lp->swapin_delay_percent = DELTAPERC(stats.swapin_delay_total, lp->swapin_delay_total);
|
|
#undef DELTAPERC
|
|
#undef BOUNDS
|
|
|
|
lp->swapin_delay_total = stats.swapin_delay_total;
|
|
lp->blkio_delay_total = stats.blkio_delay_total;
|
|
lp->cpu_delay_total = stats.cpu_delay_total;
|
|
lp->delay_read_time = stats.ac_etime * 1000;
|
|
}
|
|
return NL_OK;
|
|
}
|
|
|
|
static void LinuxProcessList_readDelayAcctData(LinuxProcessList* this, LinuxProcess* process) {
|
|
struct nl_msg* msg;
|
|
|
|
if (nl_socket_modify_cb(this->netlink_socket, NL_CB_VALID, NL_CB_CUSTOM, handleNetlinkMsg, process) < 0) {
|
|
return;
|
|
}
|
|
|
|
if (! (msg = nlmsg_alloc())) {
|
|
return;
|
|
}
|
|
|
|
if (! genlmsg_put(msg, NL_AUTO_PID, NL_AUTO_SEQ, this->netlink_family, 0, NLM_F_REQUEST, TASKSTATS_CMD_GET, TASKSTATS_VERSION)) {
|
|
nlmsg_free(msg);
|
|
}
|
|
|
|
if (nla_put_u32(msg, TASKSTATS_CMD_ATTR_PID, process->super.pid) < 0) {
|
|
nlmsg_free(msg);
|
|
}
|
|
|
|
if (nl_send_sync(this->netlink_socket, msg) < 0) {
|
|
process->swapin_delay_percent = NAN;
|
|
process->blkio_delay_percent = NAN;
|
|
process->cpu_delay_percent = NAN;
|
|
return;
|
|
}
|
|
|
|
if (nl_recvmsgs_default(this->netlink_socket) < 0) {
|
|
return;
|
|
}
|
|
}
|
|
|
|
#endif
|
|
|
|
static void setCommand(Process* process, const char* command, int len) {
|
|
if (process->comm && process->commLen >= len) {
|
|
strncpy(process->comm, command, len + 1);
|
|
} else {
|
|
free(process->comm);
|
|
process->comm = xStrdup(command);
|
|
}
|
|
process->commLen = len;
|
|
}
|
|
|
|
static bool LinuxProcessList_readCmdlineFile(Process* process, const char* dirname, const char* name) {
|
|
LinuxProcess *lp = (LinuxProcess *)process;
|
|
char filename[MAX_NAME + 1];
|
|
xSnprintf(filename, MAX_NAME, "%s/%s/cmdline", dirname, name);
|
|
int fd = open(filename, O_RDONLY);
|
|
if (fd == -1)
|
|
return false;
|
|
|
|
char command[4096 + 1]; // max cmdline length on Linux
|
|
int amtRead = xread(fd, command, sizeof(command) - 1);
|
|
close(fd);
|
|
|
|
if (amtRead == 0) {
|
|
if (process->state == 'Z') {
|
|
process->basenameOffset = 0;
|
|
} else {
|
|
((LinuxProcess*)process)->isKernelThread = true;
|
|
}
|
|
return true;
|
|
} else if (amtRead < 0) {
|
|
return false;
|
|
}
|
|
|
|
int tokenEnd = 0;
|
|
int tokenStart = 0;
|
|
int lastChar = 0;
|
|
bool argSepNUL = false;
|
|
bool argSepSpace = false;
|
|
|
|
for (int i = 0; i < amtRead; i++) {
|
|
/* newline used as delimiter - when forming the mergedCommand, newline is
|
|
* converted to space by LinuxProcess_makeCommandStr */
|
|
if (command[i] == '\0') {
|
|
command[i] = '\n';
|
|
} else {
|
|
/* Record some information for the argument parsing heuristic below. */
|
|
if (tokenEnd)
|
|
argSepNUL = true;
|
|
if (command[i] <= ' ')
|
|
argSepSpace = true;
|
|
}
|
|
|
|
if (command[i] == '\n') {
|
|
if (tokenEnd == 0) {
|
|
tokenEnd = i;
|
|
}
|
|
} else {
|
|
/* htop considers the next character after the last / that is before
|
|
* basenameOffset, as the start of the basename in cmdline - see
|
|
* Process_writeCommand */
|
|
if (!tokenEnd && command[i] == '/') {
|
|
tokenStart = i + 1;
|
|
}
|
|
lastChar = i;
|
|
}
|
|
}
|
|
|
|
command[lastChar + 1] = '\0';
|
|
|
|
if (!argSepNUL && argSepSpace) {
|
|
/* Argument parsing heuristic.
|
|
*
|
|
* This heuristic is used for processes that rewrite their command line.
|
|
* Normally the command line is split by using NUL bytes between each argument.
|
|
* But some programs like chrome flatten this using spaces.
|
|
*
|
|
* This heuristic tries its best to undo this loss of information.
|
|
* To achieve this, we treat every character <= 32 as argument separators
|
|
* (i.e. all of ASCII control sequences and space).
|
|
* We then search for the basename of the cmdline in the first argument we found that way.
|
|
* As path names may contain we try to cross-validate if the path we got that way exists.
|
|
*/
|
|
|
|
tokenStart = tokenEnd = 0;
|
|
|
|
// From initial scan we know there's at least one space.
|
|
// Check if that's part of a filename for an existing file.
|
|
if (Compat_faccessat(AT_FDCWD, command, F_OK, AT_SYMLINK_NOFOLLOW) != 0) {
|
|
// If we reach here the path does not exist.
|
|
// Thus begin searching for the part of it that actually is.
|
|
|
|
int tokenArg0Start = 0;
|
|
|
|
for (int i = 0; i <= lastChar; i++) {
|
|
/* Any ASCII control or space used as delimiter */
|
|
char tmpCommandChar = command[i];
|
|
|
|
if (command[i] <= ' ') {
|
|
if (!tokenEnd) {
|
|
command[i] = '\0';
|
|
|
|
bool found = Compat_faccessat(AT_FDCWD, command, F_OK, AT_SYMLINK_NOFOLLOW) == 0;
|
|
|
|
// Restore if this wasn't it
|
|
command[i] = found ? '\n' : tmpCommandChar;
|
|
|
|
if (found)
|
|
tokenEnd = i;
|
|
if (!tokenArg0Start)
|
|
tokenArg0Start = tokenStart;
|
|
} else {
|
|
// Split on every further separator, regardless of path correctness
|
|
command[i] = '\n';
|
|
}
|
|
} else if (!tokenEnd) {
|
|
if (command[i] == '/') {
|
|
tokenStart = i + 1;
|
|
} else if (command[i] == '\\' && (!tokenStart || command[tokenStart - 1] == '\\')) {
|
|
tokenStart = i + 1;
|
|
} else if (command[i] == ':' && (command[i + 1] != '/' && command[i + 1] != '\\')) {
|
|
tokenEnd = i;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (!tokenEnd) {
|
|
tokenStart = tokenArg0Start;
|
|
|
|
// No token delimiter found, forcibly split
|
|
for (int i = 0; i <= lastChar; i++) {
|
|
if (command[i] <= ' ') {
|
|
command[i] = '\n';
|
|
if (!tokenEnd) {
|
|
tokenEnd = i;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
if (tokenEnd == 0) {
|
|
tokenEnd = lastChar + 1;
|
|
}
|
|
|
|
lp->mergedCommand.maxLen = lastChar + 1; /* accomodate cmdline */
|
|
if (!process->comm || strcmp(command, process->comm)) {
|
|
process->basenameOffset = tokenEnd;
|
|
setCommand(process, command, lastChar + 1);
|
|
lp->procCmdlineBasenameOffset = tokenStart;
|
|
lp->procCmdlineBasenameEnd = tokenEnd;
|
|
lp->mergedCommand.cmdlineChanged = true;
|
|
}
|
|
|
|
/* /proc/[pid]/comm could change, so should be udpated */
|
|
xSnprintf(filename, MAX_NAME, "%s/%s/comm", dirname, name);
|
|
if ((fd = open(filename, O_RDONLY)) != -1 &&
|
|
(amtRead = xread(fd, command, sizeof(command) - 1)) > 0) {
|
|
close(fd);
|
|
command[amtRead - 1] = 0;
|
|
lp->mergedCommand.maxLen += amtRead - 1; /* accomodate comm */
|
|
if (!lp->procComm || strcmp(command, lp->procComm)) {
|
|
free(lp->procComm);
|
|
lp->procComm = xStrdup(command);
|
|
lp->mergedCommand.commChanged = true;
|
|
}
|
|
} else if (lp->procComm) {
|
|
free(lp->procComm);
|
|
lp->procComm = NULL;
|
|
lp->mergedCommand.commChanged = true;
|
|
}
|
|
|
|
/* execve could change /proc/[pid]/exe, so procExe should be udpated */
|
|
xSnprintf(command, sizeof(command), "%s/%s/exe", dirname, name);
|
|
if ((amtRead = readlink(command, filename, sizeof(filename) - 1)) > 0) {
|
|
filename[amtRead] = 0;
|
|
lp->mergedCommand.maxLen += amtRead; /* accomodate exe */
|
|
if (!lp->procExe || strcmp(filename, lp->procExe)) {
|
|
free(lp->procExe);
|
|
lp->procExe = xStrdup(filename);
|
|
lp->procExeLen = amtRead;
|
|
/* exe is guaranteed to contain at least one /, but validate anyway */
|
|
while (amtRead && filename[--amtRead] != '/')
|
|
;
|
|
lp->procExeBasenameOffset = amtRead + 1;
|
|
lp->mergedCommand.exeChanged = true;
|
|
|
|
const char* deletedMarker = " (deleted)";
|
|
if (strlen(lp->procExe) > strlen(deletedMarker)) {
|
|
lp->procExeDeleted = String_eq(lp->procExe + strlen(lp->procExe) - strlen(deletedMarker), deletedMarker);
|
|
|
|
if (lp->procExeDeleted && strlen(lp->procExe) - strlen(deletedMarker) == 1 && lp->procExe[0] == '/') {
|
|
lp->procExeBasenameOffset = 0;
|
|
}
|
|
}
|
|
}
|
|
} else if (lp->procExe) {
|
|
free(lp->procExe);
|
|
lp->procExe = NULL;
|
|
lp->procExeLen = 0;
|
|
lp->procExeBasenameOffset = 0;
|
|
lp->procExeDeleted = false;
|
|
lp->mergedCommand.exeChanged = true;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
static char* LinuxProcessList_updateTtyDevice(TtyDriver* ttyDrivers, unsigned int tty_nr) {
|
|
unsigned int maj = major(tty_nr);
|
|
unsigned int min = minor(tty_nr);
|
|
|
|
int i = -1;
|
|
for (;;) {
|
|
i++;
|
|
if ((!ttyDrivers[i].path) || maj < ttyDrivers[i].major) {
|
|
break;
|
|
}
|
|
if (maj > ttyDrivers[i].major) {
|
|
continue;
|
|
}
|
|
if (min < ttyDrivers[i].minorFrom) {
|
|
break;
|
|
}
|
|
if (min > ttyDrivers[i].minorTo) {
|
|
continue;
|
|
}
|
|
unsigned int idx = min - ttyDrivers[i].minorFrom;
|
|
struct stat sstat;
|
|
char* fullPath;
|
|
for (;;) {
|
|
xAsprintf(&fullPath, "%s/%d", ttyDrivers[i].path, idx);
|
|
int err = stat(fullPath, &sstat);
|
|
if (err == 0 && major(sstat.st_rdev) == maj && minor(sstat.st_rdev) == min) {
|
|
return fullPath;
|
|
}
|
|
free(fullPath);
|
|
|
|
xAsprintf(&fullPath, "%s%d", ttyDrivers[i].path, idx);
|
|
err = stat(fullPath, &sstat);
|
|
if (err == 0 && major(sstat.st_rdev) == maj && minor(sstat.st_rdev) == min) {
|
|
return fullPath;
|
|
}
|
|
free(fullPath);
|
|
|
|
if (idx == min) {
|
|
break;
|
|
}
|
|
|
|
idx = min;
|
|
}
|
|
int err = stat(ttyDrivers[i].path, &sstat);
|
|
if (err == 0 && tty_nr == sstat.st_rdev) {
|
|
return xStrdup(ttyDrivers[i].path);
|
|
}
|
|
}
|
|
char* out;
|
|
xAsprintf(&out, "/dev/%u:%u", maj, min);
|
|
return out;
|
|
}
|
|
|
|
static bool LinuxProcessList_recurseProcTree(LinuxProcessList* this, const char* dirname, Process* parent, double period, struct timeval tv) {
|
|
ProcessList* pl = (ProcessList*) this;
|
|
DIR* dir;
|
|
const struct dirent* entry;
|
|
const Settings* settings = pl->settings;
|
|
|
|
#ifdef HAVE_TASKSTATS
|
|
unsigned long long now = tv.tv_sec * 1000LL + tv.tv_usec / 1000LL;
|
|
#endif
|
|
|
|
dir = opendir(dirname);
|
|
if (!dir)
|
|
return false;
|
|
|
|
int cpus = pl->cpuCount;
|
|
bool hideKernelThreads = settings->hideKernelThreads;
|
|
bool hideUserlandThreads = settings->hideUserlandThreads;
|
|
while ((entry = readdir(dir)) != NULL) {
|
|
const char* name = entry->d_name;
|
|
|
|
// Ignore all non-directories
|
|
if (entry->d_type != DT_DIR && entry->d_type != DT_UNKNOWN) {
|
|
continue;
|
|
}
|
|
|
|
// The RedHat kernel hides threads with a dot.
|
|
// I believe this is non-standard.
|
|
if (name[0] == '.') {
|
|
name++;
|
|
}
|
|
|
|
// Just skip all non-number directories.
|
|
if (name[0] < '0' || name[0] > '9') {
|
|
continue;
|
|
}
|
|
|
|
// filename is a number: process directory
|
|
int pid = atoi(name);
|
|
|
|
if (parent && pid == parent->pid)
|
|
continue;
|
|
|
|
if (pid <= 0)
|
|
continue;
|
|
|
|
bool preExisting = false;
|
|
Process* proc = ProcessList_getProcess(pl, pid, &preExisting, LinuxProcess_new);
|
|
proc->tgid = parent ? parent->pid : pid;
|
|
|
|
LinuxProcess* lp = (LinuxProcess*) proc;
|
|
|
|
char subdirname[MAX_NAME + 1];
|
|
xSnprintf(subdirname, MAX_NAME, "%s/%s/task", dirname, name);
|
|
LinuxProcessList_recurseProcTree(this, subdirname, proc, period, tv);
|
|
|
|
/*
|
|
* These conditions will not trigger on first occurrence, cause we need to
|
|
* add the process to the ProcessList and do all one time scans
|
|
* (e.g. parsing the cmdline to detect a kernel thread)
|
|
* But it will short-circuit subsequent scans.
|
|
*/
|
|
if (preExisting && hideKernelThreads && Process_isKernelThread(proc)) {
|
|
proc->updated = true;
|
|
proc->show = false;
|
|
pl->kernelThreads++;
|
|
pl->totalTasks++;
|
|
continue;
|
|
}
|
|
if (preExisting && hideUserlandThreads && Process_isUserlandThread(proc)) {
|
|
proc->updated = true;
|
|
proc->show = false;
|
|
pl->userlandThreads++;
|
|
pl->totalTasks++;
|
|
continue;
|
|
}
|
|
|
|
#ifdef HAVE_TASKSTATS
|
|
if (settings->flags & PROCESS_FLAG_IO)
|
|
LinuxProcessList_readIoFile(lp, dirname, name, now);
|
|
#endif
|
|
|
|
if (! LinuxProcessList_readStatmFile(lp, dirname, name))
|
|
goto errorReadingProcess;
|
|
|
|
if ((settings->flags & PROCESS_FLAG_LINUX_SMAPS) && !Process_isKernelThread(proc)) {
|
|
if (!parent) {
|
|
// Read smaps file of each process only every second pass to improve performance
|
|
static int smaps_flag = 0;
|
|
if ((pid & 1) == smaps_flag) {
|
|
LinuxProcessList_readSmapsFile(lp, dirname, name, this->haveSmapsRollup);
|
|
}
|
|
if (pid == 1) {
|
|
smaps_flag = !smaps_flag;
|
|
}
|
|
} else {
|
|
lp->m_pss = ((LinuxProcess*)parent)->m_pss;
|
|
}
|
|
}
|
|
|
|
char command[MAX_NAME + 1];
|
|
unsigned long long int lasttimes = (lp->utime + lp->stime);
|
|
int commLen = sizeof(command);
|
|
unsigned int tty_nr = proc->tty_nr;
|
|
if (! LinuxProcessList_readStatFile(proc, dirname, name, command, &commLen))
|
|
goto errorReadingProcess;
|
|
|
|
if (tty_nr != proc->tty_nr && this->ttyDrivers) {
|
|
free(lp->ttyDevice);
|
|
lp->ttyDevice = LinuxProcessList_updateTtyDevice(this->ttyDrivers, proc->tty_nr);
|
|
}
|
|
|
|
if (settings->flags & PROCESS_FLAG_LINUX_IOPRIO) {
|
|
LinuxProcess_updateIOPriority(lp);
|
|
}
|
|
|
|
float percent_cpu = (lp->utime + lp->stime - lasttimes) / period * 100.0;
|
|
proc->percent_cpu = isnan(percent_cpu) ? 0.0 : CLAMP(percent_cpu, 0.0, cpus * 100.0);
|
|
proc->percent_mem = (proc->m_resident * CRT_pageSizeKB) / (double)(pl->totalMem) * 100.0;
|
|
|
|
if (!preExisting) {
|
|
|
|
if (! LinuxProcessList_statProcessDir(proc, dirname, name))
|
|
goto errorReadingProcess;
|
|
|
|
proc->user = UsersTable_getRef(pl->usersTable, proc->st_uid);
|
|
|
|
#ifdef HAVE_OPENVZ
|
|
if (settings->flags & PROCESS_FLAG_LINUX_OPENVZ) {
|
|
LinuxProcessList_readOpenVZData(lp, dirname, name);
|
|
}
|
|
#endif
|
|
|
|
#ifdef HAVE_VSERVER
|
|
if (settings->flags & PROCESS_FLAG_LINUX_VSERVER) {
|
|
LinuxProcessList_readVServerData(lp, dirname, name);
|
|
}
|
|
#endif
|
|
|
|
if (! LinuxProcessList_readCmdlineFile(proc, dirname, name)) {
|
|
goto errorReadingProcess;
|
|
}
|
|
|
|
Process_fillStarttimeBuffer(proc);
|
|
|
|
ProcessList_add(pl, proc);
|
|
} else {
|
|
if (settings->updateProcessNames && proc->state != 'Z') {
|
|
if (! LinuxProcessList_readCmdlineFile(proc, dirname, name)) {
|
|
goto errorReadingProcess;
|
|
}
|
|
}
|
|
}
|
|
/* (Re)Generate the Command string, but only if the process is:
|
|
* - not a kernel thread, and
|
|
* - not a zombie or it became zombie under htop's watch, and
|
|
* - not a user thread or if showThreadNames is not set */
|
|
if (!Process_isKernelThread(proc) &&
|
|
(proc->state != 'Z' || lp->mergedCommand.str) &&
|
|
(!Process_isUserlandThread(proc) || !settings->showThreadNames)) {
|
|
LinuxProcess_makeCommandStr(proc);
|
|
}
|
|
|
|
#ifdef HAVE_DELAYACCT
|
|
LinuxProcessList_readDelayAcctData(this, lp);
|
|
#endif
|
|
|
|
#ifdef HAVE_CGROUP
|
|
if (settings->flags & PROCESS_FLAG_LINUX_CGROUP) {
|
|
LinuxProcessList_readCGroupFile(lp, dirname, name);
|
|
}
|
|
#endif
|
|
|
|
if (settings->flags & PROCESS_FLAG_LINUX_OOM) {
|
|
LinuxProcessList_readOomData(lp, dirname, name);
|
|
}
|
|
|
|
if (settings->flags & PROCESS_FLAG_LINUX_CTXT) {
|
|
LinuxProcessList_readCtxtData(lp, dirname, name);
|
|
}
|
|
|
|
if (settings->flags & PROCESS_FLAG_LINUX_SECATTR) {
|
|
LinuxProcessList_readSecattrData(lp, dirname, name);
|
|
}
|
|
|
|
if (proc->state == 'Z' && (proc->basenameOffset == 0)) {
|
|
proc->basenameOffset = -1;
|
|
setCommand(proc, command, commLen);
|
|
} else if (Process_isThread(proc)) {
|
|
if (settings->showThreadNames || Process_isKernelThread(proc) || (proc->state == 'Z' && proc->basenameOffset == 0)) {
|
|
proc->basenameOffset = -1;
|
|
setCommand(proc, command, commLen);
|
|
} else if (settings->showThreadNames) {
|
|
if (! LinuxProcessList_readCmdlineFile(proc, dirname, name)) {
|
|
goto errorReadingProcess;
|
|
}
|
|
}
|
|
if (Process_isKernelThread(proc)) {
|
|
pl->kernelThreads++;
|
|
} else {
|
|
pl->userlandThreads++;
|
|
}
|
|
}
|
|
|
|
/* Set at the end when we know if a new entry is a thread */
|
|
proc->show = ! ((hideKernelThreads && Process_isKernelThread(proc)) || (hideUserlandThreads && Process_isUserlandThread(proc)));
|
|
|
|
pl->totalTasks++;
|
|
if (proc->state == 'R')
|
|
pl->runningTasks++;
|
|
proc->updated = true;
|
|
continue;
|
|
|
|
// Exception handler.
|
|
|
|
errorReadingProcess:
|
|
{
|
|
if (preExisting) {
|
|
ProcessList_remove(pl, proc);
|
|
} else {
|
|
Process_delete((Object*)proc);
|
|
}
|
|
}
|
|
}
|
|
closedir(dir);
|
|
return true;
|
|
}
|
|
|
|
static inline void LinuxProcessList_scanMemoryInfo(ProcessList* this) {
|
|
unsigned long long int swapFree = 0;
|
|
unsigned long long int shmem = 0;
|
|
unsigned long long int sreclaimable = 0;
|
|
|
|
FILE* file = fopen(PROCMEMINFOFILE, "r");
|
|
if (file == NULL) {
|
|
CRT_fatalError("Cannot open " PROCMEMINFOFILE);
|
|
}
|
|
char buffer[128];
|
|
while (fgets(buffer, 128, file)) {
|
|
|
|
#define tryRead(label, variable) \
|
|
if (String_startsWith(buffer, label)) { \
|
|
sscanf(buffer + strlen(label), " %32llu kB", variable); \
|
|
break; \
|
|
}
|
|
|
|
switch (buffer[0]) {
|
|
case 'M':
|
|
tryRead("MemTotal:", &this->totalMem);
|
|
tryRead("MemFree:", &this->freeMem);
|
|
tryRead("MemShared:", &this->sharedMem);
|
|
break;
|
|
case 'B':
|
|
tryRead("Buffers:", &this->buffersMem);
|
|
break;
|
|
case 'C':
|
|
tryRead("Cached:", &this->cachedMem);
|
|
break;
|
|
case 'S':
|
|
switch (buffer[1]) {
|
|
case 'w':
|
|
tryRead("SwapTotal:", &this->totalSwap);
|
|
tryRead("SwapFree:", &swapFree);
|
|
break;
|
|
case 'h':
|
|
tryRead("Shmem:", &shmem);
|
|
break;
|
|
case 'R':
|
|
tryRead("SReclaimable:", &sreclaimable);
|
|
break;
|
|
}
|
|
break;
|
|
}
|
|
#undef tryRead
|
|
}
|
|
|
|
this->usedMem = this->totalMem - this->freeMem;
|
|
this->cachedMem = this->cachedMem + sreclaimable - shmem;
|
|
this->usedSwap = this->totalSwap - swapFree;
|
|
fclose(file);
|
|
}
|
|
|
|
static inline void LinuxProcessList_scanZramInfo(LinuxProcessList* this) {
|
|
unsigned long long int totalZram = 0;
|
|
unsigned long long int usedZramComp = 0;
|
|
unsigned long long int usedZramOrig = 0;
|
|
|
|
char mm_stat[34];
|
|
char disksize[34];
|
|
|
|
unsigned int i = 0;
|
|
for (;;) {
|
|
xSnprintf(mm_stat, sizeof(mm_stat), "/sys/block/zram%u/mm_stat", i);
|
|
xSnprintf(disksize, sizeof(disksize), "/sys/block/zram%u/disksize", i);
|
|
i++;
|
|
FILE* disksize_file = fopen(disksize, "r");
|
|
FILE* mm_stat_file = fopen(mm_stat, "r");
|
|
if (disksize_file == NULL || mm_stat_file == NULL) {
|
|
if (disksize_file) {
|
|
fclose(disksize_file);
|
|
}
|
|
if (mm_stat_file) {
|
|
fclose(mm_stat_file);
|
|
}
|
|
break;
|
|
}
|
|
unsigned long long int size = 0;
|
|
unsigned long long int orig_data_size = 0;
|
|
unsigned long long int compr_data_size = 0;
|
|
|
|
if (!fscanf(disksize_file, "%llu\n", &size) ||
|
|
!fscanf(mm_stat_file, " %llu %llu", &orig_data_size, &compr_data_size)) {
|
|
fclose(disksize_file);
|
|
fclose(mm_stat_file);
|
|
break;
|
|
}
|
|
|
|
totalZram += size;
|
|
usedZramComp += compr_data_size;
|
|
usedZramOrig += orig_data_size;
|
|
|
|
fclose(disksize_file);
|
|
fclose(mm_stat_file);
|
|
}
|
|
|
|
this->zram.totalZram = totalZram / 1024;
|
|
this->zram.usedZramComp = usedZramComp / 1024;
|
|
this->zram.usedZramOrig = usedZramOrig / 1024;
|
|
}
|
|
|
|
static inline void LinuxProcessList_scanZfsArcstats(LinuxProcessList* lpl) {
|
|
unsigned long long int dbufSize = 0;
|
|
unsigned long long int dnodeSize = 0;
|
|
unsigned long long int bonusSize = 0;
|
|
|
|
FILE* file = fopen(PROCARCSTATSFILE, "r");
|
|
if (file == NULL) {
|
|
lpl->zfs.enabled = 0;
|
|
return;
|
|
}
|
|
char buffer[128];
|
|
while (fgets(buffer, 128, file)) {
|
|
#define tryRead(label, variable) \
|
|
if (String_startsWith(buffer, label)) { \
|
|
sscanf(buffer + strlen(label), " %*2u %32llu", variable); \
|
|
break; \
|
|
}
|
|
#define tryReadFlag(label, variable, flag) \
|
|
if (String_startsWith(buffer, label)) { \
|
|
(flag) = sscanf(buffer + strlen(label), " %*2u %32llu", variable); \
|
|
break; \
|
|
}
|
|
|
|
switch (buffer[0]) {
|
|
case 'c':
|
|
tryRead("c_max", &lpl->zfs.max);
|
|
tryReadFlag("compressed_size", &lpl->zfs.compressed, lpl->zfs.isCompressed);
|
|
break;
|
|
case 'u':
|
|
tryRead("uncompressed_size", &lpl->zfs.uncompressed);
|
|
break;
|
|
case 's':
|
|
tryRead("size", &lpl->zfs.size);
|
|
break;
|
|
case 'h':
|
|
tryRead("hdr_size", &lpl->zfs.header);
|
|
break;
|
|
case 'd':
|
|
tryRead("dbuf_size", &dbufSize);
|
|
tryRead("dnode_size", &dnodeSize);
|
|
break;
|
|
case 'b':
|
|
tryRead("bonus_size", &bonusSize);
|
|
break;
|
|
case 'a':
|
|
tryRead("anon_size", &lpl->zfs.anon);
|
|
break;
|
|
case 'm':
|
|
tryRead("mfu_size", &lpl->zfs.MFU);
|
|
tryRead("mru_size", &lpl->zfs.MRU);
|
|
break;
|
|
}
|
|
#undef tryRead
|
|
#undef tryReadFlag
|
|
}
|
|
fclose(file);
|
|
|
|
lpl->zfs.enabled = (lpl->zfs.size > 0 ? 1 : 0);
|
|
lpl->zfs.size /= 1024;
|
|
lpl->zfs.max /= 1024;
|
|
lpl->zfs.MFU /= 1024;
|
|
lpl->zfs.MRU /= 1024;
|
|
lpl->zfs.anon /= 1024;
|
|
lpl->zfs.header /= 1024;
|
|
lpl->zfs.other = (dbufSize + dnodeSize + bonusSize) / 1024;
|
|
if ( lpl->zfs.isCompressed ) {
|
|
lpl->zfs.compressed /= 1024;
|
|
lpl->zfs.uncompressed /= 1024;
|
|
}
|
|
}
|
|
|
|
static inline double LinuxProcessList_scanCPUTime(LinuxProcessList* this) {
|
|
|
|
FILE* file = fopen(PROCSTATFILE, "r");
|
|
if (file == NULL) {
|
|
CRT_fatalError("Cannot open " PROCSTATFILE);
|
|
}
|
|
int cpus = this->super.cpuCount;
|
|
assert(cpus > 0);
|
|
for (int i = 0; i <= cpus; i++) {
|
|
char buffer[PROC_LINE_LENGTH + 1];
|
|
unsigned long long int usertime, nicetime, systemtime, idletime;
|
|
unsigned long long int ioWait, irq, softIrq, steal, guest, guestnice;
|
|
ioWait = irq = softIrq = steal = guest = guestnice = 0;
|
|
// Depending on your kernel version,
|
|
// 5, 7, 8 or 9 of these fields will be set.
|
|
// The rest will remain at zero.
|
|
char* ok = fgets(buffer, PROC_LINE_LENGTH, file);
|
|
if (!ok) {
|
|
buffer[0] = '\0';
|
|
}
|
|
|
|
if (i == 0) {
|
|
(void) sscanf(buffer, "cpu %16llu %16llu %16llu %16llu %16llu %16llu %16llu %16llu %16llu %16llu", &usertime, &nicetime, &systemtime, &idletime, &ioWait, &irq, &softIrq, &steal, &guest, &guestnice);
|
|
} else {
|
|
int cpuid;
|
|
(void) sscanf(buffer, "cpu%4d %16llu %16llu %16llu %16llu %16llu %16llu %16llu %16llu %16llu %16llu", &cpuid, &usertime, &nicetime, &systemtime, &idletime, &ioWait, &irq, &softIrq, &steal, &guest, &guestnice);
|
|
assert(cpuid == i - 1);
|
|
}
|
|
// Guest time is already accounted in usertime
|
|
usertime = usertime - guest;
|
|
nicetime = nicetime - guestnice;
|
|
// Fields existing on kernels >= 2.6
|
|
// (and RHEL's patched kernel 2.4...)
|
|
unsigned long long int idlealltime = idletime + ioWait;
|
|
unsigned long long int systemalltime = systemtime + irq + softIrq;
|
|
unsigned long long int virtalltime = guest + guestnice;
|
|
unsigned long long int totaltime = usertime + nicetime + systemalltime + idlealltime + steal + virtalltime;
|
|
CPUData* cpuData = &(this->cpus[i]);
|
|
// Since we do a subtraction (usertime - guest) and cputime64_to_clock_t()
|
|
// used in /proc/stat rounds down numbers, it can lead to a case where the
|
|
// integer overflow.
|
|
#define WRAP_SUBTRACT(a,b) (((a) > (b)) ? (a) - (b) : 0)
|
|
cpuData->userPeriod = WRAP_SUBTRACT(usertime, cpuData->userTime);
|
|
cpuData->nicePeriod = WRAP_SUBTRACT(nicetime, cpuData->niceTime);
|
|
cpuData->systemPeriod = WRAP_SUBTRACT(systemtime, cpuData->systemTime);
|
|
cpuData->systemAllPeriod = WRAP_SUBTRACT(systemalltime, cpuData->systemAllTime);
|
|
cpuData->idleAllPeriod = WRAP_SUBTRACT(idlealltime, cpuData->idleAllTime);
|
|
cpuData->idlePeriod = WRAP_SUBTRACT(idletime, cpuData->idleTime);
|
|
cpuData->ioWaitPeriod = WRAP_SUBTRACT(ioWait, cpuData->ioWaitTime);
|
|
cpuData->irqPeriod = WRAP_SUBTRACT(irq, cpuData->irqTime);
|
|
cpuData->softIrqPeriod = WRAP_SUBTRACT(softIrq, cpuData->softIrqTime);
|
|
cpuData->stealPeriod = WRAP_SUBTRACT(steal, cpuData->stealTime);
|
|
cpuData->guestPeriod = WRAP_SUBTRACT(virtalltime, cpuData->guestTime);
|
|
cpuData->totalPeriod = WRAP_SUBTRACT(totaltime, cpuData->totalTime);
|
|
#undef WRAP_SUBTRACT
|
|
cpuData->userTime = usertime;
|
|
cpuData->niceTime = nicetime;
|
|
cpuData->systemTime = systemtime;
|
|
cpuData->systemAllTime = systemalltime;
|
|
cpuData->idleAllTime = idlealltime;
|
|
cpuData->idleTime = idletime;
|
|
cpuData->ioWaitTime = ioWait;
|
|
cpuData->irqTime = irq;
|
|
cpuData->softIrqTime = softIrq;
|
|
cpuData->stealTime = steal;
|
|
cpuData->guestTime = virtalltime;
|
|
cpuData->totalTime = totaltime;
|
|
}
|
|
|
|
double period = (double)this->cpus[0].totalPeriod / cpus;
|
|
fclose(file);
|
|
return period;
|
|
}
|
|
|
|
static int scanCPUFreqencyFromSysCPUFreq(LinuxProcessList* this) {
|
|
int cpus = this->super.cpuCount;
|
|
int numCPUsWithFrequency = 0;
|
|
unsigned long totalFrequency = 0;
|
|
|
|
for (int i = 0; i < cpus; ++i) {
|
|
char pathBuffer[64];
|
|
xSnprintf(pathBuffer, sizeof(pathBuffer), "/sys/devices/system/cpu/cpu%d/cpufreq/scaling_cur_freq", i);
|
|
|
|
FILE* file = fopen(pathBuffer, "r");
|
|
if (!file)
|
|
return -errno;
|
|
|
|
unsigned long frequency;
|
|
if (fscanf(file, "%lu", &frequency) == 1) {
|
|
/* convert kHz to MHz */
|
|
frequency = frequency / 1000;
|
|
this->cpus[i + 1].frequency = frequency;
|
|
numCPUsWithFrequency++;
|
|
totalFrequency += frequency;
|
|
}
|
|
|
|
fclose(file);
|
|
}
|
|
|
|
if (numCPUsWithFrequency > 0)
|
|
this->cpus[0].frequency = (double)totalFrequency / numCPUsWithFrequency;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void scanCPUFreqencyFromCPUinfo(LinuxProcessList* this) {
|
|
FILE* file = fopen(PROCCPUINFOFILE, "r");
|
|
if (file == NULL)
|
|
return;
|
|
|
|
int cpus = this->super.cpuCount;
|
|
int numCPUsWithFrequency = 0;
|
|
double totalFrequency = 0;
|
|
int cpuid = -1;
|
|
|
|
while (!feof(file)) {
|
|
double frequency;
|
|
char buffer[PROC_LINE_LENGTH];
|
|
|
|
if (fgets(buffer, PROC_LINE_LENGTH, file) == NULL)
|
|
break;
|
|
|
|
if (
|
|
(sscanf(buffer, "processor : %d", &cpuid) == 1) ||
|
|
(sscanf(buffer, "processor: %d", &cpuid) == 1)
|
|
) {
|
|
continue;
|
|
} else if (
|
|
(sscanf(buffer, "cpu MHz : %lf", &frequency) == 1) ||
|
|
(sscanf(buffer, "cpu MHz: %lf", &frequency) == 1)
|
|
) {
|
|
if (cpuid < 0 || cpuid > (cpus - 1)) {
|
|
continue;
|
|
}
|
|
|
|
CPUData* cpuData = &(this->cpus[cpuid + 1]);
|
|
/* do not override sysfs data */
|
|
if (isnan(cpuData->frequency)) {
|
|
cpuData->frequency = frequency;
|
|
}
|
|
numCPUsWithFrequency++;
|
|
totalFrequency += frequency;
|
|
} else if (buffer[0] == '\n') {
|
|
cpuid = -1;
|
|
}
|
|
}
|
|
fclose(file);
|
|
|
|
if (numCPUsWithFrequency > 0) {
|
|
this->cpus[0].frequency = totalFrequency / numCPUsWithFrequency;
|
|
}
|
|
}
|
|
|
|
static void LinuxProcessList_scanCPUFrequency(LinuxProcessList* this) {
|
|
int cpus = this->super.cpuCount;
|
|
assert(cpus > 0);
|
|
|
|
for (int i = 0; i <= cpus; i++) {
|
|
this->cpus[i].frequency = NAN;
|
|
}
|
|
|
|
if (scanCPUFreqencyFromSysCPUFreq(this) == 0) {
|
|
return;
|
|
}
|
|
|
|
scanCPUFreqencyFromCPUinfo(this);
|
|
}
|
|
|
|
#ifdef HAVE_LIBSENSORS
|
|
static int getCPUTemperatures(CPUData* cpus, int cpuCount) {
|
|
int tempCount = 0;
|
|
|
|
int n = 0;
|
|
for (const sensors_chip_name *chip = sensors_get_detected_chips(NULL, &n); chip; chip = sensors_get_detected_chips(NULL, &n)) {
|
|
char buffer[32];
|
|
sensors_snprintf_chip_name(buffer, sizeof(buffer), chip);
|
|
if (!String_startsWith(buffer, "coretemp") && !String_startsWith(buffer, "cpu_thermal"))
|
|
continue;
|
|
|
|
int m = 0;
|
|
for (const sensors_feature *feature = sensors_get_features(chip, &m); feature; feature = sensors_get_features(chip, &m)) {
|
|
if (feature->type != SENSORS_FEATURE_TEMP)
|
|
continue;
|
|
|
|
if (feature->number > cpuCount)
|
|
continue;
|
|
|
|
const sensors_subfeature *sub_feature = sensors_get_subfeature(chip, feature, SENSORS_SUBFEATURE_TEMP_INPUT);
|
|
if (sub_feature) {
|
|
double temp;
|
|
int r = sensors_get_value(chip, sub_feature->number, &temp);
|
|
if (r != 0)
|
|
continue;
|
|
|
|
cpus[feature->number].temperature = temp;
|
|
tempCount++;
|
|
}
|
|
}
|
|
}
|
|
|
|
return tempCount;
|
|
}
|
|
|
|
static void LinuxProcessList_scanCPUTemperature(LinuxProcessList* this) {
|
|
const int cpuCount = this->super.cpuCount;
|
|
|
|
for (int i = 0; i <= cpuCount; i++) {
|
|
this->cpus[i].temperature = NAN;
|
|
}
|
|
|
|
int r = getCPUTemperatures(this->cpus, cpuCount);
|
|
|
|
/* No temperature - nothing to do */
|
|
if (r == 0)
|
|
return;
|
|
|
|
/* Only package temperature - copy to all cpus */
|
|
if (r == 1 && !isnan(this->cpus[0].temperature)) {
|
|
double packageTemp = this->cpus[0].temperature;
|
|
for (int i = 1; i <= cpuCount; i++) {
|
|
this->cpus[i].temperature = packageTemp;
|
|
}
|
|
|
|
return;
|
|
}
|
|
|
|
/* Half the temperatures, probably HT/SMT - copy to second half */
|
|
if (r >= 2 && (r - 1) == (cpuCount / 2)) {
|
|
for (int i = cpuCount / 2 + 1; i <= cpuCount; i++) {
|
|
this->cpus[i].temperature = this->cpus[i/2].temperature;
|
|
}
|
|
|
|
return;
|
|
}
|
|
}
|
|
#endif
|
|
|
|
void ProcessList_goThroughEntries(ProcessList* super, bool pauseProcessUpdate) {
|
|
LinuxProcessList* this = (LinuxProcessList*) super;
|
|
const Settings* settings = super->settings;
|
|
|
|
LinuxProcessList_scanMemoryInfo(super);
|
|
LinuxProcessList_scanZfsArcstats(this);
|
|
LinuxProcessList_updateCPUcount(this);
|
|
LinuxProcessList_scanZramInfo(this);
|
|
|
|
double period = LinuxProcessList_scanCPUTime(this);
|
|
|
|
if (settings->showCPUFrequency) {
|
|
LinuxProcessList_scanCPUFrequency(this);
|
|
}
|
|
|
|
#ifdef HAVE_LIBSENSORS
|
|
if (settings->showCPUTemperature)
|
|
LinuxProcessList_scanCPUTemperature(this);
|
|
#endif
|
|
|
|
// in pause mode only gather global data for meters (CPU/memory/...)
|
|
if (pauseProcessUpdate) {
|
|
return;
|
|
}
|
|
|
|
struct timeval tv;
|
|
gettimeofday(&tv, NULL);
|
|
LinuxProcessList_recurseProcTree(this, PROCDIR, NULL, period, tv);
|
|
}
|