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comparison packages/kernel/current/src/sync/mbox.cxx @ 0:3111d98ba7b3 ecos-v1_1-release

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Initial commit of eCos version 1.1
author jlarmour
date Tue, 11 May 1999 11:16:07 +0000
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children 443894e2e912
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-1:000000000000 0:3111d98ba7b3
1 //==========================================================================
2 //
3 // mbox.cxx
4 //
5 // Mbox mbox template class implementation
6 //
7 //==========================================================================
8 //####COPYRIGHTBEGIN####
9 //
10 // -------------------------------------------
11 // The contents of this file are subject to the Cygnus eCos Public License
12 // Version 1.0 (the "License"); you may not use this file except in
13 // compliance with the License. You may obtain a copy of the License at
14 // http://sourceware.cygnus.com/ecos
15 //
16 // Software distributed under the License is distributed on an "AS IS"
17 // basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the
18 // License for the specific language governing rights and limitations under
19 // the License.
20 //
21 // The Original Code is eCos - Embedded Cygnus Operating System, released
22 // September 30, 1998.
23 //
24 // The Initial Developer of the Original Code is Cygnus. Portions created
25 // by Cygnus are Copyright (C) 1998 Cygnus Solutions. All Rights Reserved.
26 // -------------------------------------------
27 //
28 //####COPYRIGHTEND####
29 //==========================================================================
30 //#####DESCRIPTIONBEGIN####
31 //
32 // Author(s): hmt
33 // Contributors: hmt
34 // Date: 1998-02-11
35 // Purpose: Mbox implementation
36 // Description: This file contains the implementations of the mbox class
37 //
38 //####DESCRIPTIONEND####
39 //
40 //==========================================================================
41
42 #include <pkgconf/kernel.h>
43
44 #include <cyg/kernel/ktypes.h> // base kernel types
45 #include <cyg/infra/cyg_trac.h> // tracing macros
46 #include <cyg/infra/cyg_ass.h> // assertion macros
47 #include <cyg/kernel/instrmnt.h> // instrumentation
48
49 #include <cyg/kernel/thread.inl> // Cyg_Thread inlines
50
51 #include <cyg/kernel/mbox.hxx> // our own header
52
53 #ifndef CYGIMP_MBOXT_INLINE // force inlining
54 #define CYGIMP_MBOXT_INLINE // of implementation
55 #endif
56
57 #ifdef CYGIMP_MBOX_USE_MBOXT_PLAIN
58 #include <cyg/kernel/mboxt.inl> // mbox template implementation
59 #else
60 #include <cyg/kernel/mboxt2.inl> // mbox template implementation
61 #endif
62
63 // -------------------------------------------------------------------------
64 // This module exists to cause exactly one instance of these functions to
65 // exist; this is just like a vanilla class, except we use the template
66 // class to acquire an implementation. The template functions are inlined
67 // in each of these methods.
68
69
70 // -------------------------------------------------------------------------
71 // Constructor
72
73 Cyg_Mbox::Cyg_Mbox()
74 {
75 }
76
77 // -------------------------------------------------------------------------
78 // Destructor
79
80 Cyg_Mbox::~Cyg_Mbox()
81 {
82 }
83
84 // -------------------------------------------------------------------------
85 // debugging/assert function
86
87 #ifdef CYGDBG_USE_ASSERTS
88 cyg_bool
89 Cyg_Mbox::check_this(cyg_assert_class_zeal zeal)
90 {
91 return m.check_this(zeal);
92 }
93 #endif
94
95 // -------------------------------------------------------------------------
96 // now the members themselves:
97
98 void *
99 Cyg_Mbox::get()
100 {
101 void * p;
102 if ( ! m.get( p ) )
103 return NULL;
104 return p;
105 }
106
107 #ifdef CYGFUN_KERNEL_THREADS_TIMER
108 void *
109 Cyg_Mbox::get( cyg_tick_count timeout )
110 {
111 void * p;
112 if ( ! m.get( p, timeout ) )
113 return NULL;
114 return p;
115 }
116 #endif
117
118 void *
119 Cyg_Mbox::tryget()
120 {
121 void * p;
122 if ( ! m.tryget( p ) )
123 return NULL;
124 return p;
125 }
126
127 #ifdef CYGMFN_KERNEL_SYNCH_MBOXT_PUT_CAN_WAIT
128 cyg_bool
129 Cyg_Mbox::put( void *item )
130 {
131 return m.put( item );
132 }
133
134 #ifdef CYGFUN_KERNEL_THREADS_TIMER
135 cyg_bool
136 Cyg_Mbox::put( void *item, cyg_tick_count timeout )
137 {
138 return m.put( item, timeout );
139 }
140 #endif
141 #endif // CYGMFN_KERNEL_SYNCH_MBOXT_PUT_CAN_WAIT
142
143 cyg_bool
144 Cyg_Mbox::tryput( void *item )
145 {
146 return m.tryput( item );
147 }
148
149 void *
150 Cyg_Mbox::peek_item() // Get next item to be returned
151 {
152 void *p;
153 if ( ! m.peek_item( p ) )
154 return NULL;
155 return p;
156 }
157
158 // -------------------------------------------------------------------------
159 // EOF mbox.cxx