src/libstatgrab/process_stats.c

/*
 * i-scream libstatgrab
 * http://www.i-scream.org
 * Copyright (C) 2000-2004 i-scream
 * 
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 * 
 * This library 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
 * Lesser General Public License for more details.
 * 
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
 * 02111-1307 USA
 *
 * $Id: process_stats.c,v 1.82 2006/10/09 14:47:58 tdb Exp $
 */

#ifdef HAVE_CONFIG_H
#include "config.h"
#endif

#include "statgrab.h"
#include "tools.h"
#include "vector.h"
#if defined(SOLARIS) || defined(LINUX) || defined(AIX)
#include <stdio.h>
#include <stdlib.h>
#include <sys/types.h>
#include <dirent.h>
#endif
#include <string.h>

#ifdef SOLARIS
#include <procfs.h>
#include <limits.h>
#define PROC_LOCATION "/proc"
#define MAX_FILE_LENGTH PATH_MAX
#endif
#ifdef LINUX
#include <limits.h>
#include <unistd.h>
#include <sys/stat.h>
#include <fcntl.h>
#define PROC_LOCATION "/proc"
#define MAX_FILE_LENGTH PATH_MAX
#endif
#ifdef ALLBSD
#include <errno.h>
#include <stdlib.h>
#include <sys/param.h>
#include <sys/sysctl.h>
#if defined(FREEBSD) || defined(DFBSD)
#include <sys/user.h>
#else
#include <sys/proc.h>
#endif
#include <string.h>
#include <paths.h>
#include <fcntl.h>
#include <limits.h>
#if (defined(FREEBSD) && !defined(FREEBSD5)) || defined(DFBSD)
#include <kvm.h>
#endif
#include <unistd.h>
#ifdef NETBSD2
#include <sys/lwp.h>
#endif
#endif
#ifdef HPUX
#include <sys/param.h>
#include <sys/pstat.h>
#include <unistd.h>
#define PROCESS_BATCH 30
#endif
#ifdef WIN32
#include <windows.h>
#include <psapi.h>
#endif
#ifdef AIX
#include <unistd.h>
#include <errno.h>
#include <time.h>
#include <procinfo.h>
#include <sys/time.h>
extern int getprocs64(struct procentry64 *, int, struct fdsinfo64 *, int, pid_t *, int);
extern int getargs(struct procentry64 *, int, char *, int);
#endif

static void proc_state_init(sg_process_stats *s) {
        s->process_name = NULL;
        s->proctitle = NULL;
}

static void proc_state_destroy(sg_process_stats *s) {
        free(s->process_name);
        free(s->proctitle);
}

sg_process_stats *sg_get_process_stats(int *entries){
        VECTOR_DECLARE_STATIC(proc_state, sg_process_stats, 64,
                              proc_state_init, proc_state_destroy);
        int proc_state_size = 0;
        sg_process_stats *proc_state_ptr;
#ifdef HPUX
        struct pst_status pstat_procinfo[PROCESS_BATCH];
        long procidx = 0;
        long long pagesize;
        int num, i;
#endif
#ifdef AIX
        struct procentry64 *procs = NULL;
        long long pagesize;
        int fetched = 0;
        pid_t index = 0;
        unsigned proc_idx;
        time_t utime, stime;
        int ncpus;
        struct timeval now_tval;
        double now_time;
        char cmndline[ARG_MAX];
        char comm[ARG_MAX];
        struct procentry64 curproc_for_getargs;
#define PROCS_TO_FETCH  1000
#endif
#ifdef ALLBSD
        int mib[4];
        size_t size;
        struct kinfo_proc *kp_stats;
        int procs, i;
        char *proctitle;
#if (defined(FREEBSD) && !defined(FREEBSD5)) || defined(DFBSD)
        kvm_t *kvmd;
        char **args, **argsp;
        int argslen = 0;
#else
        long buflen;
        char *p, *proctitletmp;
#endif
#ifdef NETBSD2
        int lwps;
        struct kinfo_lwp *kl_stats;
#endif
#endif
#if defined(SOLARIS) || defined(LINUX)
        DIR *proc_dir;
        struct dirent *dir_entry;
        char filename[MAX_FILE_LENGTH];
        FILE *f;
#ifdef SOLARIS
        psinfo_t process_info;
#endif
#ifdef LINUX
        char s;
        /* If someone has a executable of 4k filename length, they deserve to get it truncated :) */
        char ps_name[4096];
        char *ptr;
        VECTOR_DECLARE_STATIC(psargs, char, 128, NULL, NULL);
        unsigned long stime, utime, starttime;
        int x;
        int fn;
        int len;
        int rc;
        time_t uptime;
        long tickspersec;
#endif

#ifdef LINUX
        if ((f=fopen("/proc/uptime", "r")) == NULL) {
                sg_set_error_with_errno(SG_ERROR_OPEN, "/proc/uptime");
                return NULL;
        }
        if((fscanf(f,"%lu %*d",&uptime)) != 1){
                sg_set_error(SG_ERROR_PARSE, NULL);
                return NULL;
        }
        fclose(f);
#endif

        if((proc_dir=opendir(PROC_LOCATION))==NULL){
                sg_set_error_with_errno(SG_ERROR_OPENDIR, PROC_LOCATION);
                return NULL;
        }

        while((dir_entry=readdir(proc_dir))!=NULL){
                if(atoi(dir_entry->d_name) == 0) continue;

#ifdef SOLARIS
                snprintf(filename, MAX_FILE_LENGTH, "/proc/%s/psinfo", dir_entry->d_name);
#endif
#ifdef LINUX
                snprintf(filename, MAX_FILE_LENGTH, "/proc/%s/stat", dir_entry->d_name);
#endif
                if((f=fopen(filename, "r"))==NULL){
                        /* Open failed.. Process since vanished, or the path was too long.
                         * Ah well, move onwards to the next one */
                        continue;
                }
#ifdef SOLARIS
                fread(&process_info, sizeof(psinfo_t), 1, f);
                fclose(f);
#endif

                if (VECTOR_RESIZE(proc_state, proc_state_size + 1) < 0) {
                        return NULL;
                }
                proc_state_ptr = proc_state+proc_state_size;

#ifdef SOLARIS          
                proc_state_ptr->pid = process_info.pr_pid;
                proc_state_ptr->parent = process_info.pr_ppid;
                proc_state_ptr->pgid = process_info.pr_pgid;
                proc_state_ptr->uid = process_info.pr_uid;
                proc_state_ptr->euid = process_info.pr_euid;
                proc_state_ptr->gid = process_info.pr_gid;
                proc_state_ptr->egid = process_info.pr_egid;
                proc_state_ptr->proc_size = (process_info.pr_size) * 1024;
                proc_state_ptr->proc_resident = (process_info.pr_rssize) * 1024;
                proc_state_ptr->time_spent = process_info.pr_time.tv_sec;
                proc_state_ptr->cpu_percent = (process_info.pr_pctcpu * 100.0) / 0x8000;
                proc_state_ptr->nice = (int)process_info.pr_lwp.pr_nice - 20;
                if (sg_update_string(&proc_state_ptr->process_name,
                                     process_info.pr_fname) < 0) {
                        return NULL;
                }
                if (sg_update_string(&proc_state_ptr->proctitle,
                                     process_info.pr_psargs) < 0) {
                        return NULL;
                }

                switch (process_info.pr_lwp.pr_state) {
                case 1:
                        proc_state_ptr->state = SG_PROCESS_STATE_SLEEPING;
                        break;
                case 2:
                case 5:
                        proc_state_ptr->state = SG_PROCESS_STATE_RUNNING; 
                        break;
                case 3:
                        proc_state_ptr->state = SG_PROCESS_STATE_ZOMBIE; 
                        break;
                case 4:
                        proc_state_ptr->state = SG_PROCESS_STATE_STOPPED; 
                        break;
                }
#endif
#ifdef LINUX
                x = fscanf(f, "%d %4096s %c %d %d %*d %*d %*d %*u %*u %*u %*u %*u %lu %lu %*d %*d %*d %d %*d %*d %lu %llu %llu %*u %*u %*u %*u %*u %*u %*u %*u %*u %*u %*u %*u %*u %*d %*d\n", &(proc_state_ptr->pid), ps_name, &s, &(proc_state_ptr->parent), &(proc_state_ptr->pgid), &utime, &stime, &(proc_state_ptr->nice), &starttime, &(proc_state_ptr->proc_size), &(proc_state_ptr->proc_resident));
                /* +3 becuase man page says "Resident  Set Size: number of pages the process has in real memory, minus 3 for administrative purposes." */
                proc_state_ptr->proc_resident = (proc_state_ptr->proc_resident + 3) * getpagesize();
                switch (s) {
                case 'S':
                        proc_state_ptr->state = SG_PROCESS_STATE_SLEEPING;
                        break;
                case 'R':
                        proc_state_ptr->state = SG_PROCESS_STATE_RUNNING;
                        break;
                case 'Z':
                        proc_state_ptr->state = SG_PROCESS_STATE_ZOMBIE;
                        break;
                case 'T':
                case 'D':
                        proc_state_ptr->state = SG_PROCESS_STATE_STOPPED;
                        break;
                }
        
                /* pa_name[0] should = '(' */
                ptr = strchr(&ps_name[1], ')'); 
                if(ptr !=NULL) *ptr='\0';

                if (sg_update_string(&proc_state_ptr->process_name,
                                     &ps_name[1]) < 0) {
                        return NULL;
                }

                /* cpu */
                proc_state_ptr->cpu_percent = (100.0 * (utime + stime)) / ((uptime * 100.0) - starttime);
                tickspersec = sysconf (_SC_CLK_TCK);
                if (tickspersec < 0) {
                        proc_state_ptr->time_spent = 0;
                }
                else {
                        proc_state_ptr->time_spent = (utime + stime) / tickspersec;
                }

                fclose(f);

                /* uid / gid */
                snprintf(filename, MAX_FILE_LENGTH, "/proc/%s/status", dir_entry->d_name);
                if ((f=fopen(filename, "r")) == NULL) {
                        /* Open failed.. Process since vanished, or the path was too long.
                         * Ah well, move onwards to the next one */
                        continue;
                }

                if((ptr=sg_f_read_line(f, "Uid:"))==NULL){
                        fclose(f);
                        continue;
                }
                sscanf(ptr, "Uid:\t%d\t%d\t%*d\t%*d\n", &(proc_state_ptr->uid), &(proc_state_ptr->euid));

                if((ptr=sg_f_read_line(f, "Gid:"))==NULL){
                        fclose(f);
                        continue;
                }
                sscanf(ptr, "Gid:\t%d\t%d\t%*d\t%*d\n", &(proc_state_ptr->gid), &(proc_state_ptr->egid));

                fclose(f);

                /* proctitle */ 
                snprintf(filename, MAX_FILE_LENGTH, "/proc/%s/cmdline", dir_entry->d_name);

                if((fn=open(filename, O_RDONLY)) == -1){
                        /* Open failed.. Process since vanished, or the path was too long.
                         * Ah well, move onwards to the next one */
                        continue;
                }

#define READ_BLOCK_SIZE 128
                len = 0;
                do {
                        if (VECTOR_RESIZE(psargs, len + READ_BLOCK_SIZE) < 0) {
                                return NULL;
                        }
                        rc = read(fn, psargs + len, READ_BLOCK_SIZE);
                        if (rc > 0) {
                                len += rc;
                        }
                } while (rc == READ_BLOCK_SIZE);
                close(fn);

                if (rc == -1) {
                        /* Read failed; move on. */
                        continue;
                }

                /* Turn \0s into spaces within the command line. */
                ptr = psargs;
                for(x = 0; x < len; x++) {
                        if (*ptr == '\0') *ptr = ' ';
                        ptr++;
                }

                if (len == 0) {
                        /* We want psargs to be NULL. */
                        if (VECTOR_RESIZE(psargs, 0) < 0) {
                                return NULL;
                        }
                } else {
                        /* Not empty, so append a \0. */
                        if (VECTOR_RESIZE(psargs, len + 1) < 0) {
                                return NULL;
                        }
                        psargs[len] = '\0';
                }

                if (sg_update_string(&proc_state_ptr->proctitle, psargs) < 0) {
                        return NULL;
                }
#endif

                proc_state_size++;
        }
        closedir(proc_dir);
#endif

#ifdef ALLBSD
        mib[0] = CTL_KERN;
        mib[1] = KERN_PROC;
        mib[2] = KERN_PROC_ALL;

        if(sysctl(mib, 3, NULL, &size, NULL, 0) < 0) {
                sg_set_error_with_errno(SG_ERROR_SYSCTL,
                                        "CTL_KERN.KERN_PROC.KERN_PROC_ALL");
                return NULL;
        }

        procs = size / sizeof(struct kinfo_proc);

        kp_stats = sg_malloc(size);
        if(kp_stats == NULL) {
                return NULL;
        }
        memset(kp_stats, 0, size);

        if(sysctl(mib, 3, kp_stats, &size, NULL, 0) < 0) {
                sg_set_error_with_errno(SG_ERROR_SYSCTL,
                                        "CTL_KERN.KERN_PROC.KERN_PROC_ALL");
                free(kp_stats);
                return NULL;
        }

#if (defined(FREEBSD) && !defined(FREEBSD5)) || defined(DFBSD)
        kvmd = sg_get_kvm2();
#endif

        for (i = 0; i < procs; i++) {
                const char *name;

#ifdef FREEBSD5
                if (kp_stats[i].ki_stat == 0) {
#else
                if (kp_stats[i].kp_proc.p_stat == 0) {
#endif
                        /* FreeBSD 5 deliberately overallocates the array that
                         * the sysctl returns, so we'll get a few junk
                         * processes on the end that we have to ignore. (Search
                         * for "overestimate by 5 procs" in
                         * src/sys/kern/kern_proc.c for more details.) */
                        continue;
                }

                if (VECTOR_RESIZE(proc_state, proc_state_size + 1) < 0) {
                        return NULL;
                }
                proc_state_ptr = proc_state+proc_state_size;

#ifdef FREEBSD5
                name = kp_stats[i].ki_comm;
#elif defined(DFBSD)
                name = kp_stats[i].kp_thread.td_comm;
#else
                name = kp_stats[i].kp_proc.p_comm;
#endif
                if (sg_update_string(&proc_state_ptr->process_name, name) < 0) {
                        return NULL;
                }

#if defined(FREEBSD5) || defined(NETBSD) || defined(OPENBSD)

#ifdef FREEBSD5
                mib[2] = KERN_PROC_ARGS;
                mib[3] = kp_stats[i].ki_pid;
#else
                mib[1] = KERN_PROC_ARGS;
                mib[2] = kp_stats[i].kp_proc.p_pid;
                mib[3] = KERN_PROC_ARGV;
#endif

                free(proc_state_ptr->proctitle);
                proc_state_ptr->proctitle = NULL;

/* Starting size - we'll double this straight away */
#define PROCTITLE_START_SIZE 64
                buflen = PROCTITLE_START_SIZE;
                size = buflen;
                proctitle = NULL;

                do {
                        if((long) size >= buflen) {
                                buflen *= 2;
                                size = buflen;
                                proctitletmp = sg_realloc(proctitle, buflen);
                                if(proctitletmp == NULL) {
                                        free(proctitle);
                                        proctitle = NULL;
                                        proc_state_ptr->proctitle = NULL;
                                        size = 0;
                                        break;
                                }
                                proctitle = proctitletmp;
                                bzero(proctitle, buflen);
                        }

                        if(sysctl(mib, 4, proctitle, &size, NULL, 0) < 0) {
                                free(proctitle);
                                proctitle = NULL;
                                proc_state_ptr->proctitle = NULL;
                                size = 0;
                                break;
                        }
                } while((long) size >= buflen);

                if(size > 0) {
                        proc_state_ptr->proctitle = sg_malloc(size+1);
                        if(proc_state_ptr->proctitle == NULL) {
                                return NULL;
                        }
                        p = proctitle;
#ifdef OPENBSD
                        /* On OpenBSD, this value has the argv pointers (which
                         * are terminated by a NULL) at the front, so we have
                         * to skip over them to get to the strings. */
                        while (*(char ***)p != NULL) {
                                p += sizeof(char **);
                        }
                        p += sizeof(char **);
#endif
                        proc_state_ptr->proctitle[0] = '\0';
                        do {
                                sg_strlcat(proc_state_ptr->proctitle, p, size+1);
                                sg_strlcat(proc_state_ptr->proctitle, " ", size+1);
                                p += strlen(p) + 1;
                        } while (p < proctitle + size);
                        free(proctitle);
                        proctitle = NULL;
                        /* remove trailing space */
                        proc_state_ptr->proctitle[strlen(proc_state_ptr->proctitle)-1] = '\0';
                }
                else {
                        if(proctitle != NULL) {
                                free(proctitle);
                                proctitle = NULL;
                        }
                        proc_state_ptr->proctitle = NULL;
                }
#else
                free(proc_state_ptr->proctitle);
                proc_state_ptr->proctitle = NULL;
                if(kvmd != NULL) {
                        args = kvm_getargv(kvmd, &(kp_stats[i]), 0);
                        if(args != NULL) {
                                argsp = args;
                                while(*argsp != NULL) {
                                        argslen += strlen(*argsp) + 1;
                                        argsp++;
                                }
                                proctitle = sg_malloc(argslen + 1);
                                proctitle[0] = '\0';
                                if(proctitle == NULL) {
                                        return NULL;
                                }
                                while(*args != NULL) {
                                        sg_strlcat(proctitle, *args, argslen + 1);
                                        sg_strlcat(proctitle, " ", argslen + 1);
                                        args++;
                                }
                                /* remove trailing space */
                                proctitle[strlen(proctitle)-1] = '\0';
                                proc_state_ptr->proctitle = proctitle;
                        }
                        else {
                                proc_state_ptr->proctitle = NULL;
                        }
                }
                else {
                        proc_state_ptr->proctitle = NULL;
                }
#endif

#ifdef FREEBSD5
                proc_state_ptr->pid = kp_stats[i].ki_pid;
                proc_state_ptr->parent = kp_stats[i].ki_ppid;
                proc_state_ptr->pgid = kp_stats[i].ki_pgid;
#else
                proc_state_ptr->pid = kp_stats[i].kp_proc.p_pid;
                proc_state_ptr->parent = kp_stats[i].kp_eproc.e_ppid;
                proc_state_ptr->pgid = kp_stats[i].kp_eproc.e_pgid;
#endif

#ifdef FREEBSD5
                proc_state_ptr->uid = kp_stats[i].ki_ruid;
                proc_state_ptr->euid = kp_stats[i].ki_uid;
                proc_state_ptr->gid = kp_stats[i].ki_rgid;
                proc_state_ptr->egid = kp_stats[i].ki_svgid;
#elif defined(DFBSD)
                proc_state_ptr->uid = kp_stats[i].kp_eproc.e_ucred.cr_ruid;
                proc_state_ptr->euid = kp_stats[i].kp_eproc.e_ucred.cr_svuid;
                proc_state_ptr->gid = kp_stats[i].kp_eproc.e_ucred.cr_rgid;
                proc_state_ptr->egid = kp_stats[i].kp_eproc.e_ucred.cr_svgid;
#else
                proc_state_ptr->uid = kp_stats[i].kp_eproc.e_pcred.p_ruid;
                proc_state_ptr->euid = kp_stats[i].kp_eproc.e_pcred.p_svuid;
                proc_state_ptr->gid = kp_stats[i].kp_eproc.e_pcred.p_rgid;
                proc_state_ptr->egid = kp_stats[i].kp_eproc.e_pcred.p_svgid;
#endif

#ifdef FREEBSD5
                proc_state_ptr->proc_size = kp_stats[i].ki_size;
                /* This is in pages */
                proc_state_ptr->proc_resident =
                        kp_stats[i].ki_rssize * getpagesize();
                /* This is in microseconds */
                proc_state_ptr->time_spent = kp_stats[i].ki_runtime / 1000000;
                proc_state_ptr->cpu_percent =
                        ((double)kp_stats[i].ki_pctcpu / FSCALE) * 100.0;
                proc_state_ptr->nice = kp_stats[i].ki_nice;
#else
                proc_state_ptr->proc_size =
                        kp_stats[i].kp_eproc.e_vm.vm_map.size;
                /* This is in pages */
                proc_state_ptr->proc_resident =
                        kp_stats[i].kp_eproc.e_vm.vm_rssize * getpagesize();
#if defined(NETBSD) || defined(OPENBSD)
                proc_state_ptr->time_spent =
                        kp_stats[i].kp_proc.p_rtime.tv_sec;
#elif defined(DFBSD)
                proc_state_ptr->time_spent = 
                        ( kp_stats[i].kp_thread.td_uticks +
                        kp_stats[i].kp_thread.td_sticks +
                        kp_stats[i].kp_thread.td_iticks ) / 1000000;
#else
                /* This is in microseconds */
                proc_state_ptr->time_spent =
                        kp_stats[i].kp_proc.p_runtime / 1000000;
#endif
                proc_state_ptr->cpu_percent =
                        ((double)kp_stats[i].kp_proc.p_pctcpu / FSCALE) * 100.0;
                proc_state_ptr->nice = kp_stats[i].kp_proc.p_nice;
#endif

#ifdef NETBSD2
                {
                        size_t size;
                        int mib[5];

                        mib[0] = CTL_KERN;
                        mib[1] = KERN_LWP;
                        mib[2] = kp_stats[i].kp_proc.p_pid;
                        mib[3] = sizeof(struct kinfo_lwp);
                        mib[4] = 0;

                        if(sysctl(mib, 5, NULL, &size, NULL, 0) < 0) {
                                sg_set_error_with_errno(SG_ERROR_SYSCTL, "CTL_KERN.KERN_LWP.pid.structsize.0");
                                return NULL;
                        }

                        lwps = size / sizeof(struct kinfo_lwp);
                        mib[4] = lwps;

                        kl_stats = sg_malloc(size);
                        if(kl_stats == NULL) {
                                return NULL;
                        }

                        if(sysctl(mib, 5, kl_stats, &size, NULL, 0) < 0) {
                                sg_set_error_with_errno(SG_ERROR_SYSCTL, "CTL_KERN.KERN_LWP.pid.structsize.buffersize");
                                return NULL;
                        }
                }

                switch(kp_stats[i].kp_proc.p_stat) {
                case SIDL:
                        proc_state_ptr->state = SG_PROCESS_STATE_RUNNING;
                        break;
                case SACTIVE:
                        {
                                int i;

                                for(i = 0; i < lwps; i++) {
                                        switch(kl_stats[i].l_stat) {
                                        case LSONPROC:
                                        case LSRUN:
                                                proc_state_ptr->state = SG_PROCESS_STATE_RUNNING;
                                                goto end;
                                        case LSSLEEP:
                                                proc_state_ptr->state = SG_PROCESS_STATE_SLEEPING;
                                                goto end;
                                        case LSSTOP:
                                        case LSSUSPENDED:
                                                proc_state_ptr->state = SG_PROCESS_STATE_STOPPED;
                                                goto end;
                                        }
                                        proc_state_ptr->state = SG_PROCESS_STATE_UNKNOWN;
                                }
                                end: ;
                        }
                        break;
                case SSTOP:
                        proc_state_ptr->state = SG_PROCESS_STATE_STOPPED;
                        break;
                case SZOMB:
                        proc_state_ptr->state = SG_PROCESS_STATE_ZOMBIE;
                        break;
                default:
                        proc_state_ptr->state = SG_PROCESS_STATE_UNKNOWN;
                        break;
                }

                free(kl_stats);
#else
#ifdef FREEBSD5
                switch (kp_stats[i].ki_stat) {
#else
                switch (kp_stats[i].kp_proc.p_stat) {
#endif
                case SIDL:
                case SRUN:
#ifdef SONPROC
                case SONPROC: /* NetBSD */
#endif
                        proc_state_ptr->state = SG_PROCESS_STATE_RUNNING;
                        break;
                case SSLEEP:
#ifdef SWAIT
                case SWAIT: /* FreeBSD 5 */
#endif
#ifdef SLOCK
                case SLOCK: /* FreeBSD 5 */
#endif
                        proc_state_ptr->state = SG_PROCESS_STATE_SLEEPING;
                        break;
                case SSTOP:
                        proc_state_ptr->state = SG_PROCESS_STATE_STOPPED;
                        break;
                case SZOMB:
#ifdef SDEAD
                case SDEAD: /* OpenBSD & NetBSD */
#endif
                        proc_state_ptr->state = SG_PROCESS_STATE_ZOMBIE;
                        break;
                default:
                        proc_state_ptr->state = SG_PROCESS_STATE_UNKNOWN;
                        break;
                }
#endif
                proc_state_size++;
        }

        free(kp_stats);
#endif

#ifdef HPUX
        if ((pagesize = sysconf(_SC_PAGESIZE)) == -1) {
                sg_set_error_with_errno(SG_ERROR_SYSCONF, "_SC_PAGESIZE");
                return NULL;
        }

        while (1) {
                num = pstat_getproc(pstat_procinfo, sizeof pstat_procinfo[0],
                                    PROCESS_BATCH, procidx);
                if (num == -1) {
                        sg_set_error_with_errno(SG_ERROR_PSTAT,
                                                "pstat_getproc");
                        return NULL;
                } else if (num == 0) {
                        break;
                }

                for (i = 0; i < num; i++) {
                        struct pst_status *pi = &pstat_procinfo[i];

                        if (VECTOR_RESIZE(proc_state, proc_state_size + 1) < 0) {
                                return NULL;
                        }
                        proc_state_ptr = proc_state+proc_state_size;
        
                        proc_state_ptr->pid = pi->pst_pid;
                        proc_state_ptr->parent = pi->pst_ppid;
                        proc_state_ptr->pgid = pi->pst_pgrp;
                        proc_state_ptr->uid = pi->pst_uid;
                        proc_state_ptr->euid = pi->pst_euid;
                        proc_state_ptr->gid = pi->pst_gid;
                        proc_state_ptr->egid = pi->pst_egid;
                        proc_state_ptr->proc_size = (pi->pst_dsize + pi->pst_tsize + pi->pst_ssize) * pagesize;
                        proc_state_ptr->proc_resident = pi->pst_rssize * pagesize;
                        proc_state_ptr->time_spent = pi->pst_time;
                        proc_state_ptr->cpu_percent = (pi->pst_pctcpu * 100.0) / 0x8000;
                        proc_state_ptr->nice = pi->pst_nice;
        
                        if (sg_update_string(&proc_state_ptr->process_name,
                                             pi->pst_ucomm) < 0) {
                                return NULL;
                        }
                        if (sg_update_string(&proc_state_ptr->proctitle,
                                             pi->pst_cmd) < 0) {
                                return NULL;
                        }
        
                        switch (pi->pst_stat) {
                        case PS_SLEEP:
                                proc_state_ptr->state = SG_PROCESS_STATE_SLEEPING;
                                break;
                        case PS_RUN:
                                proc_state_ptr->state = SG_PROCESS_STATE_RUNNING;
                                break;
                        case PS_STOP:
                                proc_state_ptr->state = SG_PROCESS_STATE_STOPPED;
                                break;
                        case PS_ZOMBIE:
                                proc_state_ptr->state = SG_PROCESS_STATE_ZOMBIE;
                                break;
                        case PS_IDLE:
                        case PS_OTHER:
                                proc_state_ptr->state = SG_PROCESS_STATE_UNKNOWN;
                                break;
                        }
        
                        proc_state_size++;
                }
                procidx = pstat_procinfo[num - 1].pst_idx + 1;
        }
#endif

#ifdef AIX
#define TVALU_TO_SEC(x) ((x).tv_sec + ((double)((x).tv_usec) / 1000000.0))
#define TVALN_TO_SEC(x) ((x).tv_sec + ((double)((x).tv_usec) / 1000000000.0))
        ncpus = sysconf(_SC_NPROCESSORS_ONLN);
        if( -1 == ncpus ) {
                ncpus = 1; /* sysconf error - assume 1 */
        }

        if ((pagesize = sysconf(_SC_PAGESIZE)) == -1) {
                sg_set_error_with_errno(SG_ERROR_SYSCONF, "_SC_PAGESIZE");
                return NULL;
        }

        proc_idx = 0;
        procs = /* (struct procentry64 *) */ malloc(sizeof(*procs) * PROCS_TO_FETCH);
        if(NULL == procs) {
                sg_set_error_with_errno(SG_ERROR_MALLOC, "sg_get_process_stats");
                return 0;
        }

        gettimeofday(&now_tval, 0);
        now_time = TVALU_TO_SEC(now_tval);

        /* keep on grabbing chunks of processes until getprocs returns a smaller
           block than we asked for */
        do {
                int i;
                fetched = getprocs64(procs, sizeof(*procs), NULL, 0, &index, PROCS_TO_FETCH);
                if (VECTOR_RESIZE(proc_state, proc_state_size + fetched) < 0) {
                        sg_set_error_with_errno(SG_ERROR_MALLOC, "sg_get_process_stats");
                        free(procs);
                        return NULL;
                }
                for( i = 0; i < fetched; ++i ) {
                        struct procentry64 *pi = procs+i;
                        int zombie = 0;

                        proc_state_ptr = proc_state + proc_idx;

                        zombie = 0;

                        /* set a descriptive name for the process state */
                        switch( pi->pi_state ) {
                        case SSLEEP:
                                proc_state_ptr->state = SG_PROCESS_STATE_SLEEPING;
                                break;
                        case SRUN:
                                proc_state_ptr->state = SG_PROCESS_STATE_RUNNING;
                                break;
                        case SZOMB:
                                proc_state_ptr->state = SG_PROCESS_STATE_ZOMBIE;
                                zombie = 1;
                                break;
                        case SSTOP:
                                proc_state_ptr->state = SG_PROCESS_STATE_STOPPED;
                                break;
                        case SACTIVE:
                                proc_state_ptr->state = SG_PROCESS_STATE_RUNNING;
                                break;
                        case SIDL:
                        default:
                                proc_state_ptr->state = SG_PROCESS_STATE_UNKNOWN;
                                break;
                        }

                        if( zombie ) {
                                utime = pi->pi_utime;
                                stime = pi->pi_stime;
                        } else {
                                utime = TVALN_TO_SEC(pi->pi_ru.ru_utime) + TVALN_TO_SEC(pi->pi_cru.ru_utime);
                                stime = TVALN_TO_SEC(pi->pi_ru.ru_stime) + TVALN_TO_SEC(pi->pi_cru.ru_stime);
                        }

                        proc_state_ptr->pid = pi->pi_pid;
                        proc_state_ptr->parent = pi->pi_ppid;
                        proc_state_ptr->pgid = pi->pi_pgrp;
                        proc_state_ptr->uid = pi->pi_cred.crx_ruid;
                        proc_state_ptr->euid = pi->pi_cred.crx_uid;
                        proc_state_ptr->gid = pi->pi_cred.crx_rgid;
                        proc_state_ptr->egid = pi->pi_cred.crx_gid;
                        proc_state_ptr->proc_size = pi->pi_size;
                        proc_state_ptr->proc_resident = pi->pi_drss + pi->pi_trss; /* XXX might be wrong, see P::PT */
                        proc_state_ptr->time_spent = utime + stime;
                        proc_state_ptr->cpu_percent = (((double)(utime + stime) * 100) / ( now_time - pi->pi_start )) / ncpus;
                        proc_state_ptr->nice = pi->pi_nice;

                        /* determine comm & cmndline */
                        if( (pi->pi_flags & SKPROC) == SKPROC ) {
                                if( pi->pi_pid == 0 ) {
                                        snprintf(comm, ARG_MAX, "kproc (swapper)");
                                        snprintf(cmndline, ARG_MAX, "kproc (swapper)");
                                } else {
                                        snprintf(comm, ARG_MAX, "kproc (%s)", pi->pi_comm);
                                        snprintf(cmndline, ARG_MAX, "kproc (%s)", pi->pi_comm);
                                }
                        } else {
                                snprintf(comm, ARG_MAX, "%s", pi->pi_comm);
                                curproc_for_getargs.pi_pid = pi->pi_pid;
                                if( getargs(&curproc_for_getargs, sizeof(curproc_for_getargs), cmndline, ARG_MAX) < 0 ) {
                                        snprintf(cmndline, ARG_MAX, "%s", pi->pi_comm);
                                } else {
                                        int done = 0;
                                        /* replace NUL characters in command line with spaces */
                                        char *c = cmndline;
                                        while( ! done ) {
                                                if( *c == '\0' ) {
                                                        if( *(c+1) == '\0' ) {
                                                                done = 1;
                                                        } else {
                                                                *c++ = ' ';
                                                        }
                                                } else {
                                                        ++c;
                                                }
                                        }
                                }
                        }


                        if (sg_update_string(&proc_state_ptr->process_name, comm) < 0) {
                                free(procs);
                                return NULL;
                        }
                        if (sg_update_string(&proc_state_ptr->proctitle, cmndline) < 0) {
                                free(procs);
                                return NULL;
                        }

                        proc_idx++;
                }
        } while( fetched >= PROCS_TO_FETCH );

        proc_state_size = proc_idx;

        free(procs);
#endif


#ifdef CYGWIN
        sg_set_error(SG_ERROR_UNSUPPORTED, "Cygwin");
        return NULL;
#endif
#ifdef WIN32
        /* FIXME The data needed for this is probably do able with the 
         * "performance registry". Although using this appears to be a black
         * art and closely guarded secret.
         * This is not directly used in ihost, so not considered a priority */
        sg_set_error(SG_ERROR_UNSUPPORTED, "Win32");
        return NULL;
#endif

        *entries = proc_state_size;
        return proc_state;
}

sg_process_count *sg_get_process_count() {
        static sg_process_count process_stat;
#ifndef WIN32
        sg_process_stats *ps;
        int ps_size, x;
#else
        DWORD aProcesses[1024];
        DWORD cbNeeded;
#endif

        process_stat.sleeping = 0;
        process_stat.running = 0;
        process_stat.zombie = 0;
        process_stat.stopped = 0;
        process_stat.total = 0;

#ifndef WIN32
        ps = sg_get_process_stats(&ps_size);
        if (ps == NULL) {
                return NULL;
        }

        for(x = 0; x < ps_size; x++) {
                switch (ps->state) {
                case SG_PROCESS_STATE_RUNNING:
                        process_stat.running++;
                        break;
                case SG_PROCESS_STATE_SLEEPING:
                        process_stat.sleeping++;
                        break;
                case SG_PROCESS_STATE_STOPPED:
                        process_stat.stopped++;
                        break;
                case SG_PROCESS_STATE_ZOMBIE:
                        process_stat.zombie++;
                        break;
                default:
                        /* currently no mapping for SG_PROCESS_STATE_UNKNOWN in
                         * sg_process_count */
                        break;
                }
                ps++;
        }

        process_stat.total = ps_size;
#else
        if (!EnumProcesses(aProcesses, sizeof(aProcesses), &cbNeeded))
                return NULL;
        process_stat.total = cbNeeded / sizeof(DWORD);
#endif

        return &process_stat;
}

int sg_process_compare_name(const void *va, const void *vb) {
        const sg_process_stats *a = (sg_process_stats *)va;
        const sg_process_stats *b = (sg_process_stats *)vb;

        return strcmp(a->process_name, b->process_name);
}

int sg_process_compare_pid(const void *va, const void *vb) {
        const sg_process_stats *a = (sg_process_stats *)va;
        const sg_process_stats *b = (sg_process_stats *)vb;

        if (a->pid < b->pid) {
                return -1;
        } else if (a->pid == b->pid) {
                return 0;
        } else {
                return 1;
        }
}

int sg_process_compare_uid(const void *va, const void *vb) {
        const sg_process_stats *a = (sg_process_stats *)va;
        const sg_process_stats *b = (sg_process_stats *)vb;

        if (a->uid < b->uid) {
                return -1;
        } else if (a->uid == b->uid) {
                return 0;
        } else {
                return 1;
        }
}

int sg_process_compare_gid(const void *va, const void *vb) {
        const sg_process_stats *a = (sg_process_stats *)va;
        const sg_process_stats *b = (sg_process_stats *)vb;

        if (a->gid < b->gid) {
                return -1;
        } else if (a->gid == b->gid) {
                return 0;
        } else {
                return 1;
        }
}

int sg_process_compare_size(const void *va, const void *vb) {
        const sg_process_stats *a = (sg_process_stats *)va;
        const sg_process_stats *b = (sg_process_stats *)vb;

        if (a->proc_size < b->proc_size) {
                return -1;
        } else if (a->proc_size == b->proc_size) {
                return 0;
        } else {
                return 1;
        }
}

int sg_process_compare_res(const void *va, const void *vb) {
        const sg_process_stats *a = (sg_process_stats *)va;
        const sg_process_stats *b = (sg_process_stats *)vb;

        if (a->proc_resident < b->proc_resident) {
                return -1;
        } else if (a->proc_resident == b->proc_resident) {
                return 0;
        } else {
                return 1;
        }
}

int sg_process_compare_cpu(const void *va, const void *vb) {
        const sg_process_stats *a = (sg_process_stats *)va;
        const sg_process_stats *b = (sg_process_stats *)vb;

        if (a->cpu_percent < b->cpu_percent) {
                return -1;
        } else if (a->cpu_percent == b->cpu_percent) {
                return 0;
        } else {
                return 1;
        }
}

int sg_process_compare_time(const void *va, const void *vb) {
        const sg_process_stats *a = (sg_process_stats *)va;
        const sg_process_stats *b = (sg_process_stats *)vb;

        if (a->time_spent < b->time_spent) {
                return -1;
        } else if (a->time_spent == b->time_spent) {
                return 0;
        } else {
                return 1;
        }
}

Revision:	1.83
Committed:	Sun Oct 3 18:35:58 2010 UTC (13 years, 6 months ago) by tdb
Content type:	text/plain
Branch:	MAIN
CVS Tags:	HEAD
Changes since 1.82:	+164 -2 lines
Log Message:	Add support for AIX 5.x - 9.x. Many thanks to Jens Rehsack <rehsack@googlemail.com> for providing the patch for this work. Thanks!