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annotate packages/language/c/libc/current/src/time/time.cxx @ 80:2085233a121a ecos-sw-2000-04-07

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Merge from eCos master repository on 2000-04-07-07:52:29-BST
author jlarmour
date Fri, 07 Apr 2000 07:45:04 +0000
parents bf00f99aec69
children
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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 Red Hat eCos Public License
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12 // Version 1.1 (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://www.redhat.com/
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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 Configurable Operating System,
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22 // released September 30, 1998.
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23 //
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24 // The Initial Developer of the Original Code is Red Hat.
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25 // Portions created by Red Hat are
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26 // Copyright (C) 1998, 1999, 2000 Red Hat, Inc.
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27 // All Rights Reserved.
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28 // -------------------------------------------
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29 //
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30 //####COPYRIGHTEND####
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31 //========================================================================
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32 //#####DESCRIPTIONBEGIN####
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33 //
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34 // Author(s): jlarmour
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35 // Contributors: jlarmour
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36 // Date: 1999-03-04
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37 // Purpose: Provide implementation of ISO C time() as defined in
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38 // ISO C section 7.12.2.4
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39 // Description: This file provides an implementation of time() using
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40 // the "wallclock" device
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41 // Usage:
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42 //
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43 //####DESCRIPTIONEND####
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44 //
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45 //========================================================================
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46
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47 // CONFIGURATION
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48
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49 #include <pkgconf/libc.h> // C library configuration
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50
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51 // INCLUDES
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52
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53 #include <cyg/infra/cyg_type.h> // Common type definitions and support
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54 #include <cyg/infra/cyg_ass.h> // Assertion infrastructure
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55 #include <cyg/infra/cyg_trac.h> // Tracing infrastructure
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56 #include <time.h> // Main date and time definitions
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57
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58 #ifdef CYGSEM_LIBC_TIME_TIME_WORKING
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59 # include <cyg/io/wallclock.hxx> // Wallclock class definitions
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60 #endif
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61
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62 // FUNCTIONS
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63
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64 externC time_t
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65 __time( time_t *timer )
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66 {
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67 CYG_REPORT_FUNCNAMETYPE("__time", "returning %d");
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68 if (timer) // its allowed to be NULL
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69 CYG_CHECK_DATA_PTR( timer, "timer is not a valid pointer!");
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70 CYG_REPORT_FUNCARG1("timer = %08x", timer);
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71
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72 #ifdef CYGSEM_LIBC_TIME_TIME_WORKING
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73 time_t ret;
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74
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75 ret = (time_t) Cyg_WallClock::wallclock->get_current_time();
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76
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77 if (timer)
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78 *timer = ret;
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79
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80 CYG_REPORT_RETVAL(ret);
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81
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82 return ret;
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83
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84 #else // i.e. ifndef CYGSEM_LIBC_TIME_TIME_WORKING
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85
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86 if (timer)
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87 *timer = (time_t)-1;
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88 CYG_REPORT_RETVAL(-1);
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89 return (time_t)-1;
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90
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91 #endif
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92
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93 } // __time()
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94
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95
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96 // SYMBOL DEFINITIONS
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97
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98 externC time_t
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99 time( time_t *timer ) CYGBLD_ATTRIB_WEAK_ALIAS(__time);
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100
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101 // EOF time.cxx