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comparison packages/kernel/current/src/common/timer.cxx @ 2:443894e2e912 ecos-v1_2_1-release

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Block commit of eCos version 1.2.1
author jlarmour
date Tue, 11 May 1999 12:24:34 +0000
parents 3111d98ba7b3
children c38311975d4f
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1:72f549f0d891 2:443894e2e912
1 //========================================================================== 1 //==========================================================================
2 // 2 //
3 // common/timer.cxx 3 // common/timer.cxx
4 // 4 //
5 // Timer class implementations 5 // Timer class implementations
6 // 6 //
7 //========================================================================== 7 //==========================================================================
8 //####COPYRIGHTBEGIN#### 8 //####COPYRIGHTBEGIN####
9 // 9 //
10 // ------------------------------------------- 10 // -------------------------------------------
20 // 20 //
21 // The Original Code is eCos - Embedded Cygnus Operating System, released 21 // The Original Code is eCos - Embedded Cygnus Operating System, released
22 // September 30, 1998. 22 // September 30, 1998.
23 // 23 //
24 // The Initial Developer of the Original Code is Cygnus. Portions created 24 // The Initial Developer of the Original Code is Cygnus. Portions created
25 // by Cygnus are Copyright (C) 1998 Cygnus Solutions. All Rights Reserved. 25 // by Cygnus are Copyright (C) 1998,1999 Cygnus Solutions. All Rights Reserved.
26 // ------------------------------------------- 26 // -------------------------------------------
27 // 27 //
28 //####COPYRIGHTEND#### 28 //####COPYRIGHTEND####
29 //========================================================================== 29 //==========================================================================
30 //#####DESCRIPTIONBEGIN#### 30 //#####DESCRIPTIONBEGIN####
31 // 31 //
32 // Author(s): dsm 32 // Author(s): dsm
33 // Contributors: dsm 33 // Contributors: dsm
34 // Date: 1998-06-11 34 // Date: 1998-06-11
35 // Purpose: Clock class implementation 35 // Purpose: Clock class implementation
36 // Description: This file implements the Timer class which is derived from 36 // Description: This file implements the Timer class which is derived from
37 // the Alarm class to support uITRON type functionality 37 // the Alarm class to support uITRON type functionality
38 // 38 //
39 //####DESCRIPTIONEND#### 39 //####DESCRIPTIONEND####
40 // 40 //
41 //========================================================================== 41 //==========================================================================
93 } 93 }
94 94
95 void 95 void
96 Cyg_Timer::activate(cyg_uint32 action) // (DISABLE | ENABLE) [|RESET] 96 Cyg_Timer::activate(cyg_uint32 action) // (DISABLE | ENABLE) [|RESET]
97 { 97 {
98 if(!(action & ENABLE)) 98 // we must also disable the alarm when resetting it so as to remove it
99 disable(); 99 // from its queue, so that the enable afterwards places it on the right
100 // queue instead of assuming that, being enabled, it's already there.
101 // (if not enabling, the behaviour is unchanged and correct)
102 if(!(action & ENABLE) || (action & RESET) )
103 disable(); // otherwise, the enable below does nothing...
100 104
101 if((action & RESET)) 105 if((action & RESET))
102 { 106 {
103 cyg_tick_count t; 107 cyg_tick_count t;
104 t = counter->current_value(); 108 t = counter->current_value();
105 trigger = t + interval; 109 trigger = t + interval;
106 } 110 }
107 111
108 if((action & ENABLE)) { 112 if((action & ENABLE)) {
109 enable(); 113 enable(); // ...when it should put the timer on a new queue.
110 } 114 }
111 } 115 }
112 116
113 // ------------------------------------------------------------------------- 117 // -------------------------------------------------------------------------
114 // EOF common/timer.cxx 118 // EOF common/timer.cxx