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1.1 ! nbrk 1: /*
! 2: * Copyright (c) 2007, Kohsuke Ohtani
! 3: * All rights reserved.
! 4: *
! 5: * Redistribution and use in source and binary forms, with or without
! 6: * modification, are permitted provided that the following conditions
! 7: * are met:
! 8: * 1. Redistributions of source code must retain the above copyright
! 9: * notice, this list of conditions and the following disclaimer.
! 10: * 2. Redistributions in binary form must reproduce the above copyright
! 11: * notice, this list of conditions and the following disclaimer in the
! 12: * documentation and/or other materials provided with the distribution.
! 13: * 3. Neither the name of the author nor the names of any co-contributors
! 14: * may be used to endorse or promote products derived from this software
! 15: * without specific prior written permission.
! 16: *
! 17: * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
! 18: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
! 19: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
! 20: * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
! 21: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
! 22: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
! 23: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
! 24: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
! 25: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
! 26: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
! 27: * SUCH DAMAGE.
! 28: */
! 29:
! 30: #include <prex/prex.h>
! 31: #include <server/object.h>
! 32: #include <server/stdmsg.h>
! 33: #include <server/proc.h>
! 34:
! 35: #include <unistd.h>
! 36: #include <stdlib.h>
! 37: #include <errno.h>
! 38: #include <stdio.h>
! 39:
! 40: #ifdef CMDBOX
! 41: #define main(argc, argv) ps_main(argc, argv)
! 42: #endif
! 43:
! 44: #define PSFX 0x01
! 45: #define PSFL 0x02
! 46:
! 47: struct info_proc {
! 48: pid_t pid;
! 49: pid_t ppid;
! 50: int stat;
! 51: };
! 52:
! 53: static object_t procobj;
! 54:
! 55: static int
! 56: pstat(task_t task, struct info_proc *ip)
! 57: {
! 58: static struct msg m;
! 59: int rc;
! 60:
! 61: do {
! 62: m.hdr.code = PS_PSTAT;
! 63: m.data[0] = task;
! 64: rc = msg_send(procobj, &m, sizeof(m));
! 65: } while (rc == EINTR);
! 66:
! 67: if (rc || m.hdr.status) {
! 68: ip->pid = -1;
! 69: ip->ppid = -1;
! 70: ip->stat = 1;
! 71: return -1;
! 72: }
! 73:
! 74: ip->pid = m.data[0];
! 75: ip->ppid = m.data[1];
! 76: ip->stat = m.data[2];
! 77: return 0;
! 78: }
! 79:
! 80: int
! 81: main(int argc, char *argv[])
! 82: {
! 83: int ch, rc, ps_flag = 0;
! 84: static struct info_thread it;
! 85: static struct info_proc ip;
! 86: pid_t last_pid = -2;
! 87: char stat[][2] = { "R", "Z", "S" };
! 88: char pol[][5] = { "FIFO", "RR " };
! 89:
! 90: while ((ch = getopt(argc, argv, "lx")) != -1)
! 91: switch(ch) {
! 92: case 'x':
! 93: ps_flag |= PSFX;
! 94: break;
! 95: case 'l':
! 96: ps_flag |= PSFL;
! 97: break;
! 98:
! 99: case '?':
! 100: default:
! 101: fprintf(stderr, "usage: ps [-lx]\n");
! 102: exit(1);
! 103: }
! 104: argc -= optind;
! 105: argv += optind;
! 106:
! 107: if (object_lookup(OBJNAME_PROC, &procobj))
! 108: exit(1);
! 109:
! 110: if (ps_flag & PSFL)
! 111: printf(" PID PPID PRI STAT POL SUS TIME WCHAN CMD\n");
! 112: else
! 113: printf(" PID TIME CMD\n");
! 114:
! 115: rc = 0;
! 116: it.cookie = 0;
! 117: do {
! 118: /*
! 119: * Get thread info from kernel.
! 120: */
! 121: rc = sys_info(INFO_THREAD, &it);
! 122: if (!rc) {
! 123: /*
! 124: * Get process info from server.
! 125: */
! 126: if (pstat(it.task, &ip) && !(ps_flag & PSFX))
! 127: continue;
! 128:
! 129: if (ps_flag & PSFL) {
! 130: if (ip.pid == -1)
! 131: printf(" - -"); /* kernel */
! 132: else
! 133: printf("%5d %5d", ip.pid, ip.ppid);
! 134:
! 135: printf(" %3d %s %s %3d %8d "
! 136: "%-11s %-11s\n",
! 137: it.prio, stat[ip.stat-1],
! 138: pol[it.policy], it.suspend_count,
! 139: it.total_ticks, it.sleep_event,
! 140: it.task_name);
! 141: } else {
! 142: if (!(ps_flag & PSFX) && (ip.pid == last_pid))
! 143: continue;
! 144: if (ip.pid == -1)
! 145: printf(" -"); /* kernel */
! 146: else
! 147: printf("%5d", ip.pid);
! 148:
! 149: printf(" %8d %-11s\n", it.total_ticks,
! 150: it.task_name);
! 151: last_pid = ip.pid;
! 152: }
! 153: }
! 154: } while (rc == 0);
! 155: exit(0);
! 156: }