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[/] [openrisc/] [trunk/] [rtos/] [ecos-3.0/] [packages/] [redboot/] [current/] [src/] [net/] [timers.c] - Blame information for rev 838

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//==========================================================================
//
//      net/timers.c
//
//      Stand-alone networking support for RedBoot
//
//==========================================================================
// ####ECOSGPLCOPYRIGHTBEGIN####                                            
// -------------------------------------------                              
// This file is part of eCos, the Embedded Configurable Operating System.   
// Copyright (C) 1998, 1999, 2000, 2001, 2002 Free Software Foundation, Inc.
//
// eCos is free software; you can redistribute it and/or modify it under    
// the terms of the GNU General Public License as published by the Free     
// Software Foundation; either version 2 or (at your option) any later      
// version.                                                                 
//
// eCos is distributed in the hope that it will be useful, but WITHOUT      
// ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or    
// FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License    
// for more details.                                                        
//
// You should have received a copy of the GNU General Public License        
// along with eCos; if not, write to the Free Software Foundation, Inc.,    
// 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.            
//
// As a special exception, if other files instantiate templates or use      
// macros or inline functions from this file, or you compile this file      
// and link it with other works to produce a work based on this file,       
// this file does not by itself cause the resulting work to be covered by   
// the GNU General Public License. However the source code for this file    
// must still be made available in accordance with section (3) of the GNU   
// General Public License v2.                                               
//
// This exception does not invalidate any other reasons why a work based    
// on this file might be covered by the GNU General Public License.         
// -------------------------------------------                              
// ####ECOSGPLCOPYRIGHTEND####                                              
//==========================================================================
//#####DESCRIPTIONBEGIN####
//
// Author(s):    gthomas
// Contributors: gthomas
// Date:         2000-07-14
// Purpose:      
// Description:  
//              
// This code is part of RedBoot (tm).
//
//####DESCRIPTIONEND####
//
//==========================================================================
 
#include <net/net.h>
 
static timer_t *tmr_list;
 
 
/*
 * Set a timer. Caller is responsible for providing the timer_t struct.
 */
void
__timer_set(timer_t *t, unsigned long delay,
            tmr_handler_t handler, void *user_data)
{
    timer_t *p;
 
    t->delay = delay;
    t->start = MS_TICKS();
    t->handler = handler;
    t->user_data = user_data;
 
    for (p = tmr_list; p; p = p->next)
        if (p == t) {
            return;
        }
 
    t->next = tmr_list;
    tmr_list = t;
}
 
 
/*
 * Remove a given timer from timer list.
 */
void
__timer_cancel(timer_t *t)
{
    timer_t *prev, *p;
 
    for (prev = NULL, p = tmr_list; p; prev = p, p = p->next)
        if (p == t) {
            if (prev)
                prev->next = p->next;
            else
                tmr_list = p->next;
            return;
        }
}
 
 
/*
 * Poll timer list for timer expirations.
 */
void
__timer_poll(void)
{
    timer_t *prev, *t;
 
    prev = NULL;
    t = tmr_list;
    while (t) {
        if ((MS_TICKS_DELAY() - t->start) >= t->delay) {
 
            /* remove it before calling handler */
            if (prev)
                prev->next = t->next;
            else
                tmr_list = t->next;
            /* now, call the handler */
            t->handler(t->user_data);
 
            /*
             * handler may be time consuming, so start
             * from beginning of list.
             */
            prev = NULL;
            t = tmr_list;
        } else {
            prev = t;
            t = t->next;
        }
    }
}

Line No.	Rev	Author	Line
1	786	skrzyp	`//==========================================================================`
2			`//`
3			`// net/timers.c`
4			`//`
5			`// Stand-alone networking support for RedBoot`
6			`//`
7			`//==========================================================================`
8			`// ####ECOSGPLCOPYRIGHTBEGIN####`
9			`// -------------------------------------------`
10			`// This file is part of eCos, the Embedded Configurable Operating System.`
11			`// Copyright (C) 1998, 1999, 2000, 2001, 2002 Free Software Foundation, Inc.`
12			`//`
13			`// eCos is free software; you can redistribute it and/or modify it under`
14			`// the terms of the GNU General Public License as published by the Free`
15			`// Software Foundation; either version 2 or (at your option) any later`
16			`// version.`
17			`//`
18			`// eCos is distributed in the hope that it will be useful, but WITHOUT`
19			`// ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or`
20			`// FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License`
21			`// for more details.`
22			`//`
23			`// You should have received a copy of the GNU General Public License`
24			`// along with eCos; if not, write to the Free Software Foundation, Inc.,`
25			`// 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.`
26			`//`
27			`// As a special exception, if other files instantiate templates or use`
28			`// macros or inline functions from this file, or you compile this file`
29			`// and link it with other works to produce a work based on this file,`
30			`// this file does not by itself cause the resulting work to be covered by`
31			`// the GNU General Public License. However the source code for this file`
32			`// must still be made available in accordance with section (3) of the GNU`
33			`// General Public License v2.`
34			`//`
35			`// This exception does not invalidate any other reasons why a work based`
36			`// on this file might be covered by the GNU General Public License.`
37			`// -------------------------------------------`
38			`// ####ECOSGPLCOPYRIGHTEND####`
39			`//==========================================================================`
40			`//#####DESCRIPTIONBEGIN####`
41			`//`
42			`// Author(s): gthomas`
43			`// Contributors: gthomas`
44			`// Date: 2000-07-14`
45			`// Purpose:`
46			`// Description:`
47			`//`
48			`// This code is part of RedBoot (tm).`
49			`//`
50			`//####DESCRIPTIONEND####`
51			`//`
52			`//==========================================================================`
53
54			`#include <net/net.h>`
55
56			`static timer_t *tmr_list;`
57
58
59			`/*`
60			`* Set a timer. Caller is responsible for providing the timer_t struct.`
61			`*/`
62			`void`
63			`__timer_set(timer_t *t, unsigned long delay,`
64			`tmr_handler_t handler, void *user_data)`
65			`{`
66			`timer_t *p;`
67
68			`t->delay = delay;`
69			`t->start = MS_TICKS();`
70			`t->handler = handler;`
71			`t->user_data = user_data;`
72
73			`for (p = tmr_list; p; p = p->next)`
74			`if (p == t) {`
75			`return;`
76			`}`
77
78			`t->next = tmr_list;`
79			`tmr_list = t;`
80			`}`
81
82
83			`/*`
84			`* Remove a given timer from timer list.`
85			`*/`
86			`void`
87			`__timer_cancel(timer_t *t)`
88			`{`
89			`timer_t prev, p;`
90
91			`for (prev = NULL, p = tmr_list; p; prev = p, p = p->next)`
92			`if (p == t) {`
93			`if (prev)`
94			`prev->next = p->next;`
95			`else`
96			`tmr_list = p->next;`
97			`return;`
98			`}`
99			`}`
100
101
102			`/*`
103			`* Poll timer list for timer expirations.`
104			`*/`
105			`void`
106			`__timer_poll(void)`
107			`{`
108			`timer_t prev, t;`
109
110			`prev = NULL;`
111			`t = tmr_list;`
112			`while (t) {`
113			`if ((MS_TICKS_DELAY() - t->start) >= t->delay) {`
114
115			`/* remove it before calling handler */`
116			`if (prev)`
117			`prev->next = t->next;`
118			`else`
119			`tmr_list = t->next;`
120			`/* now, call the handler */`
121			`t->handler(t->user_data);`
122
123			`/*`
124			`* handler may be time consuming, so start`
125			`* from beginning of list.`
126			`*/`
127			`prev = NULL;`
128			`t = tmr_list;`
129			`} else {`
130			`prev = t;`
131			`t = t->next;`
132			`}`
133			`}`
134			`}`

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[/] [openrisc/] [trunk/] [rtos/] [ecos-3.0/] [packages/] [redboot/] [current/] [src/] [net/] [timers.c] - Blame information for rev 838