scoutos / prex-0.9.0 / usr / bin / ps / ps.c @ 03e9c04a
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1 | 03e9c04a | Brad Neuman | /*
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2 | * Copyright (c) 2007, Kohsuke Ohtani
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3 | * All rights reserved.
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4 | x *
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5 | * Redistribution and use in source and binary forms, with or without
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6 | * modification, are permitted provided that the following conditions
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7 | * are met:
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8 | * 1. Redistributions of source code must retain the above copyright
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9 | * notice, this list of conditions and the following disclaimer.
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10 | * 2. Redistributions in binary form must reproduce the above copyright
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11 | * notice, this list of conditions and the following disclaimer in the
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12 | * documentation and/or other materials provided with the distribution.
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13 | * 3. Neither the name of the author nor the names of any co-contributors
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14 | * may be used to endorse or promote products derived from this software
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15 | * without specific prior written permission.
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16 | *
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17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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18 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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19 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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20 | * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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21 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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22 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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23 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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24 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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25 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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26 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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27 | * SUCH DAMAGE.
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28 | */
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29 | |||
30 | #include <sys/prex.h> |
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31 | #include <ipc/ipc.h> |
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32 | #include <ipc/proc.h> |
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33 | |||
34 | #include <unistd.h> |
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35 | #include <stdlib.h> |
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36 | #include <errno.h> |
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37 | #include <stdio.h> |
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38 | |||
39 | #ifdef CMDBOX
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40 | #define main(argc, argv) ps_main(argc, argv)
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41 | #endif
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42 | |||
43 | #define PSFX 0x01 |
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44 | #define PSFL 0x02 |
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45 | |||
46 | struct procinfo {
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47 | pid_t pid; |
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48 | pid_t ppid; |
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49 | int stat;
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50 | }; |
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51 | |||
52 | static object_t procobj;
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53 | |||
54 | static int |
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55 | pstat(task_t task, struct procinfo *pi)
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56 | { |
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57 | static struct msg m; |
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58 | int rc;
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59 | |||
60 | do {
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61 | m.hdr.code = PS_PSTAT; |
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62 | m.data[0] = (int)task; |
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63 | rc = msg_send(procobj, &m, sizeof(m));
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64 | } while (rc == EINTR);
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65 | |||
66 | if (rc || m.hdr.status) {
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67 | pi->pid = -1;
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68 | pi->ppid = -1;
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69 | pi->stat = 1;
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70 | return -1; |
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71 | } |
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72 | |||
73 | pi->pid = m.data[0];
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74 | pi->ppid = m.data[1];
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75 | pi->stat = m.data[2];
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76 | return 0; |
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77 | } |
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78 | |||
79 | int
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80 | main(int argc, char *argv[]) |
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81 | { |
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82 | static const char stat[][2] = { "R", "Z", "S" }; |
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83 | static const char pol[][5] = { "FIFO", "RR " }; |
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84 | static struct threadinfo ti; |
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85 | static struct procinfo pi; |
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86 | int ch, rc, ps_flag = 0; |
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87 | pid_t last_pid = -2;
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88 | |||
89 | while ((ch = getopt(argc, argv, "lx")) != -1) |
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90 | switch(ch) {
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91 | case 'x': |
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92 | ps_flag |= PSFX; |
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93 | break;
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94 | case 'l': |
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95 | ps_flag |= PSFL; |
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96 | break;
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97 | |||
98 | case '?': |
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99 | default:
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100 | fprintf(stderr, "usage: ps [-lx]\n");
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101 | exit(1);
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102 | } |
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103 | argc -= optind; |
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104 | argv += optind; |
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105 | |||
106 | if (object_lookup("!proc", &procobj)) |
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107 | exit(1);
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108 | |||
109 | if (ps_flag & PSFL)
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110 | printf(" PID PPID PRI STAT POL TIME WCHAN CMD\n");
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111 | else
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112 | printf(" PID TIME CMD\n");
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113 | |||
114 | rc = 0;
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115 | ti.cookie = 0;
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116 | do {
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117 | /*
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118 | * Get thread info from kernel.
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119 | */
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120 | rc = sys_info(INFO_THREAD, &ti); |
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121 | if (!rc) {
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122 | /*
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123 | * Get process info from server.
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124 | */
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125 | if (pstat(ti.task, &pi) && !(ps_flag & PSFX))
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126 | continue;
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127 | |||
128 | if (ps_flag & PSFL) {
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129 | if (pi.pid == -1) |
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130 | printf(" - -"); /* kernel */ |
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131 | else
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132 | printf("%5d %5d", pi.pid, pi.ppid);
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133 | |||
134 | printf(" %3d %s %s %8d "
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135 | "%-11s %-11s\n",
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136 | ti.priority, stat[pi.stat-1],
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137 | pol[ti.policy], |
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138 | ti.time, ti.slpevt, ti.taskname); |
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139 | } else {
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140 | if (!(ps_flag & PSFX) && (pi.pid == last_pid))
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141 | continue;
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142 | if (pi.pid == -1) |
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143 | printf(" -"); /* kernel */ |
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144 | else
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145 | printf("%5d", pi.pid);
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146 | |||
147 | printf(" %8d %-11s\n", ti.time, ti.taskname);
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148 | last_pid = pi.pid; |
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149 | } |
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150 | } |
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151 | } while (rc == 0); |
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152 | exit(0);
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153 | } |