root / prex-0.9.0 / usr / bin / ps / ps.c @ 03e9c04a
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/*
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* Copyright (c) 2007, Kohsuke Ohtani
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* All rights reserved.
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x *
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the author nor the names of any co-contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/prex.h> |
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#include <ipc/ipc.h> |
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#include <ipc/proc.h> |
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#include <unistd.h> |
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#include <stdlib.h> |
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#include <errno.h> |
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#include <stdio.h> |
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#ifdef CMDBOX
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#define main(argc, argv) ps_main(argc, argv)
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#endif
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#define PSFX 0x01 |
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#define PSFL 0x02 |
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struct procinfo {
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pid_t pid; |
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pid_t ppid; |
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int stat;
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}; |
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static object_t procobj;
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static int |
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pstat(task_t task, struct procinfo *pi)
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{ |
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static struct msg m; |
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int rc;
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do {
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m.hdr.code = PS_PSTAT; |
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m.data[0] = (int)task; |
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rc = msg_send(procobj, &m, sizeof(m));
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} while (rc == EINTR);
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if (rc || m.hdr.status) {
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pi->pid = -1;
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pi->ppid = -1;
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pi->stat = 1;
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return -1; |
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} |
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pi->pid = m.data[0];
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pi->ppid = m.data[1];
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pi->stat = m.data[2];
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return 0; |
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} |
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int
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main(int argc, char *argv[]) |
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{ |
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static const char stat[][2] = { "R", "Z", "S" }; |
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static const char pol[][5] = { "FIFO", "RR " }; |
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static struct threadinfo ti; |
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static struct procinfo pi; |
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int ch, rc, ps_flag = 0; |
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pid_t last_pid = -2;
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while ((ch = getopt(argc, argv, "lx")) != -1) |
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switch(ch) {
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case 'x': |
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ps_flag |= PSFX; |
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break;
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case 'l': |
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ps_flag |= PSFL; |
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break;
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case '?': |
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default:
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fprintf(stderr, "usage: ps [-lx]\n");
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exit(1);
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} |
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argc -= optind; |
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argv += optind; |
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if (object_lookup("!proc", &procobj)) |
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exit(1);
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if (ps_flag & PSFL)
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printf(" PID PPID PRI STAT POL TIME WCHAN CMD\n");
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else
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printf(" PID TIME CMD\n");
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rc = 0;
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ti.cookie = 0;
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do {
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/*
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* Get thread info from kernel.
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*/
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rc = sys_info(INFO_THREAD, &ti); |
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if (!rc) {
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/*
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* Get process info from server.
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*/
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if (pstat(ti.task, &pi) && !(ps_flag & PSFX))
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continue;
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if (ps_flag & PSFL) {
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if (pi.pid == -1) |
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printf(" - -"); /* kernel */ |
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else
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printf("%5d %5d", pi.pid, pi.ppid);
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printf(" %3d %s %s %8d "
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"%-11s %-11s\n",
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ti.priority, stat[pi.stat-1],
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pol[ti.policy], |
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ti.time, ti.slpevt, ti.taskname); |
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} else {
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if (!(ps_flag & PSFX) && (pi.pid == last_pid))
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continue;
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if (pi.pid == -1) |
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printf(" -"); /* kernel */ |
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else
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printf("%5d", pi.pid);
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printf(" %8d %-11s\n", ti.time, ti.taskname);
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last_pid = pi.pid; |
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} |
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} |
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} while (rc == 0); |
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exit(0);
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} |