1 | /* |
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2 | * Time Shell Command Implmentation |
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3 | * |
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4 | * Author: Chris Johns <chrisj@rtems.org> |
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5 | * |
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6 | * The license and distribution terms for this file may be |
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7 | * found in the file LICENSE in this distribution or at |
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8 | * http://www.rtems.org/license/LICENSE. |
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9 | */ |
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10 | |
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11 | #ifdef HAVE_CONFIG_H |
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12 | #include "config.h" |
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13 | #endif |
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14 | |
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15 | #include <stdio.h> |
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16 | #include <unistd.h> |
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17 | #include <string.h> |
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18 | #include <inttypes.h> |
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19 | #include <errno.h> |
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20 | #include <sys/types.h> |
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21 | #include <sys/stat.h> |
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22 | |
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23 | #include <rtems.h> |
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24 | #include <rtems/shell.h> |
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25 | #include "internal.h" |
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26 | |
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27 | /* Helper macro to print "time_t" */ |
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28 | #if SIZEOF_TIME_T == 8 |
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29 | #define PRIdtime_t PRId64 |
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30 | #elif SIZEOF_TIME_T == 4 |
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31 | #define PRIdtime_t PRId32 |
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32 | #else |
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33 | #error "PRIdtime_t: unsupported size of time_t" |
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34 | #endif |
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35 | |
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36 | static int rtems_shell_main_time( |
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37 | int argc, |
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38 | char *argv[] |
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39 | ) |
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40 | { |
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41 | int errorlevel = 0; |
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42 | struct timespec start; |
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43 | struct timespec end; |
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44 | struct timespec period; |
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45 | rtems_status_code sc; |
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46 | |
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47 | argc--; |
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48 | |
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49 | sc = rtems_clock_get_uptime(&start); |
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50 | if (sc != RTEMS_SUCCESSFUL) |
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51 | fprintf(stderr, "error: cannot read time\n"); |
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52 | |
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53 | if (argc) { |
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54 | errorlevel = rtems_shell_execute_cmd(argv[1], argc, &argv[1]); |
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55 | } |
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56 | |
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57 | sc = rtems_clock_get_uptime(&end); |
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58 | if (sc != RTEMS_SUCCESSFUL) |
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59 | fprintf(stderr, "error: cannot read time\n"); |
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60 | |
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61 | period.tv_sec = end.tv_sec - start.tv_sec; |
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62 | period.tv_nsec = end.tv_nsec - start.tv_nsec; |
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63 | if (period.tv_nsec < 0) |
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64 | { |
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65 | --period.tv_sec; |
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66 | period.tv_nsec += 1000000000UL; |
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67 | } |
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68 | |
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69 | fprintf(stderr, "time: %" PRIdtime_t ":%02" PRIdtime_t ":%02" PRIdtime_t ".%03li\n", |
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70 | period.tv_sec / 3600, |
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71 | period.tv_sec / 60, period.tv_sec % 60, |
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72 | period.tv_nsec / 1000000); |
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73 | |
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74 | return errorlevel; |
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75 | } |
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76 | |
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77 | rtems_shell_cmd_t rtems_shell_TIME_Command = { |
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78 | .name = "time", |
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79 | .usage = "time command [arguments...]", |
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80 | .topic = "misc", |
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81 | .command = rtems_shell_main_time, |
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82 | .mode = S_IRUSR | S_IXUSR | S_IRGRP | S_IXGRP | S_IROTH | S_IXOTH |
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83 | }; |
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