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1 //======================================================================== |
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2 // |
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3 // time.cxx |
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4 // |
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5 // ISO C date and time implementation for time() |
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6 // |
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7 //======================================================================== |
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8 //####COPYRIGHTBEGIN#### |
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9 // |
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10 // ------------------------------------------- |
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11 // The contents of this file are subject to the Cygnus eCos Public License |
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12 // Version 1.0 (the "License"); you may not use this file except in |
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13 // compliance with the License. You may obtain a copy of the License at |
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14 // http://sourceware.cygnus.com/ecos |
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15 // |
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16 // Software distributed under the License is distributed on an "AS IS" |
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17 // basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the |
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18 // License for the specific language governing rights and limitations under |
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19 // the License. |
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20 // |
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21 // The Original Code is eCos - Embedded Cygnus Operating System, released |
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22 // September 30, 1998. |
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23 // |
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24 // The Initial Developer of the Original Code is Cygnus. Portions created |
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25 // by Cygnus are Copyright (C) 1998,1999 Cygnus Solutions. All Rights Reserved. |
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26 // ------------------------------------------- |
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27 // |
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28 //####COPYRIGHTEND#### |
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29 //======================================================================== |
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30 //#####DESCRIPTIONBEGIN#### |
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31 // |
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32 // Author(s): jlarmour |
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33 // Contributors: jlarmour |
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34 // Date: 1999-03-04 |
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35 // Purpose: Provide implementation of ISO C time() as defined in |
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36 // ISO C section 7.12.2.4 |
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37 // Description: This file provides an implementation of time() using |
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38 // the "wallclock" device |
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39 // Usage: |
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40 // |
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41 //####DESCRIPTIONEND#### |
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42 // |
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43 //======================================================================== |
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44 |
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45 // CONFIGURATION |
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46 |
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47 #include <pkgconf/libc.h> // C library configuration |
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48 |
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49 // INCLUDES |
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50 |
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51 #include <cyg/infra/cyg_type.h> // Common type definitions and support |
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52 #include <cyg/infra/cyg_ass.h> // Assertion infrastructure |
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53 #include <cyg/infra/cyg_trac.h> // Tracing infrastructure |
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54 #include <time.h> // Main date and time definitions |
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55 |
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56 #ifdef CYGSEM_LIBC_TIME_TIME_WORKING |
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57 # include <cyg/devs/wallclock.hxx> // Wallclock class definitions |
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58 #endif |
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59 |
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60 // FUNCTIONS |
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61 |
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62 externC time_t |
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63 __time( time_t *timer ) |
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64 { |
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65 CYG_REPORT_FUNCNAMETYPE("__time", "returning %d"); |
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66 if (timer) // its allowed to be NULL |
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67 CYG_CHECK_DATA_PTR( timer, "timer is not a valid pointer!"); |
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68 CYG_REPORT_FUNCARG1("timer = %08x", timer); |
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69 |
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70 #ifdef CYGSEM_LIBC_TIME_TIME_WORKING |
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71 time_t ret; |
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72 |
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73 ret = (time_t) Cyg_WallClock::wallclock->get_current_time(); |
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74 |
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75 if (timer) |
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76 *timer = ret; |
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77 |
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78 CYG_REPORT_RETVAL(ret); |
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79 |
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80 return ret; |
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81 |
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82 #else // i.e. ifndef CYGSEM_LIBC_TIME_TIME_WORKING |
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83 |
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84 if (timer) |
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85 *timer = (time_t)-1; |
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86 CYG_REPORT_RETVAL(-1); |
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87 return (time_t)-1; |
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88 |
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89 #endif |
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90 |
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91 } // __time() |
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92 |
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93 |
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94 // SYMBOL DEFINITIONS |
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95 |
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96 externC time_t |
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97 time( time_t *timer ) CYGBLD_ATTRIB_WEAK_ALIAS(__time); |
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98 |
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99 // EOF time.cxx |
