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annotate packages/kernel/current/src/sync/mbox.cxx @ 66:bf00f99aec69 ecos-sw-2000-02-02

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Merge from eCos master repository on 2000-02-02-19:16:44-GMT
author jlarmour
date Wed, 02 Feb 2000 19:57:02 +0000
parents c38311975d4f
children e0c0827131d1
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1 //==========================================================================
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2 //
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3 // mbox.cxx
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4 //
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5 // Mbox mbox template class implementation
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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): hmt
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35 // Contributors: hmt
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36 // Date: 1998-02-11
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37 // Purpose: Mbox implementation
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38 // Description: This file contains the implementations of the mbox class
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39 //
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40 //####DESCRIPTIONEND####
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41 //
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42 //==========================================================================
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43
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44 #include <pkgconf/kernel.h>
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45
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46 #include <cyg/kernel/ktypes.h> // base kernel types
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47 #include <cyg/infra/cyg_trac.h> // tracing macros
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48 #include <cyg/infra/cyg_ass.h> // assertion macros
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49 #include <cyg/kernel/instrmnt.h> // instrumentation
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50
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51 #include <cyg/kernel/thread.inl> // Cyg_Thread inlines
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52
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53 #include <cyg/kernel/mbox.hxx> // our own header
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54
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55 #ifndef CYGIMP_MBOXT_INLINE // force inlining
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56 #define CYGIMP_MBOXT_INLINE // of implementation
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57 #endif
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58
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59 #ifdef CYGIMP_MBOX_USE_MBOXT_PLAIN
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60 #include <cyg/kernel/mboxt.inl> // mbox template implementation
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61 #else
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62 #include <cyg/kernel/mboxt2.inl> // mbox template implementation
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63 #endif
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64
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65 // -------------------------------------------------------------------------
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66 // This module exists to cause exactly one instance of these functions to
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67 // exist; this is just like a vanilla class, except we use the template
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68 // class to acquire an implementation. The template functions are inlined
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69 // in each of these methods.
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70
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71
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72 // -------------------------------------------------------------------------
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73 // Constructor
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74
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75 Cyg_Mbox::Cyg_Mbox()
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76 {
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77 }
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78
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79 // -------------------------------------------------------------------------
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80 // Destructor
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81
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82 Cyg_Mbox::~Cyg_Mbox()
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83 {
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84 }
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85
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86 // -------------------------------------------------------------------------
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87 // debugging/assert function
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88
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89 #ifdef CYGDBG_USE_ASSERTS
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90 cyg_bool
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91 Cyg_Mbox::check_this(cyg_assert_class_zeal zeal) const
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92 {
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93 return m.check_this(zeal);
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94 }
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95 #endif
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96
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97 // -------------------------------------------------------------------------
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98 // now the members themselves:
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99
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100 void *
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101 Cyg_Mbox::get()
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102 {
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103 void * p;
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104 if ( ! m.get( p ) )
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105 return NULL;
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106 return p;
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107 }
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108
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109 #ifdef CYGFUN_KERNEL_THREADS_TIMER
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110 void *
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111 Cyg_Mbox::get( cyg_tick_count timeout )
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112 {
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113 void * p;
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114 if ( ! m.get( p, timeout ) )
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115 return NULL;
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116 return p;
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117 }
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118 #endif
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119
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120 void *
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121 Cyg_Mbox::tryget()
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122 {
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123 void * p;
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124 if ( ! m.tryget( p ) )
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125 return NULL;
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126 return p;
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127 }
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128
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129 #ifdef CYGMFN_KERNEL_SYNCH_MBOXT_PUT_CAN_WAIT
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130 cyg_bool
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131 Cyg_Mbox::put( void *item )
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132 {
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133 return m.put( item );
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134 }
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135
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136 #ifdef CYGFUN_KERNEL_THREADS_TIMER
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137 cyg_bool
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138 Cyg_Mbox::put( void *item, cyg_tick_count timeout )
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139 {
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140 return m.put( item, timeout );
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141 }
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142 #endif
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143 #endif // CYGMFN_KERNEL_SYNCH_MBOXT_PUT_CAN_WAIT
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144
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145 cyg_bool
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146 Cyg_Mbox::tryput( void *item )
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147 {
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148 return m.tryput( item );
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149 }
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150
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151 void *
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152 Cyg_Mbox::peek_item() // Get next item to be returned
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153 {
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154 void *p;
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155 if ( ! m.peek_item( p ) )
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156 return NULL;
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157 return p;
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158 }
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159
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160 // -------------------------------------------------------------------------
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161 // EOF mbox.cxx