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annotate packages/redboot/current/src/ticks.c @ 1169:83f799d5b41a

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Improve stand-alone networking speeds.
author gthomas
date Tue, 19 Aug 2003 17:23:01 +0000
parents d2c90368aeef
children
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1 //==========================================================================
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2 //
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3 // ticks.c
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4 //
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5 // Stand-alone timer support for RedBoot
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6 //
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7 //==========================================================================
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8 //####ECOSGPLCOPYRIGHTBEGIN####
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9 // -------------------------------------------
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10 // This file is part of eCos, the Embedded Configurable Operating System.
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11 // Copyright (C) 1998, 1999, 2000, 2001, 2002 Red Hat, Inc.
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12 // Copyright (C) 2003 Gary Thomas
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13 //
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14 // eCos is free software; you can redistribute it and/or modify it under
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15 // the terms of the GNU General Public License as published by the Free
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16 // Software Foundation; either version 2 or (at your option) any later version.
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17 //
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18 // eCos is distributed in the hope that it will be useful, but WITHOUT ANY
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19 // WARRANTY; without even the implied warranty of MERCHANTABILITY or
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20 // FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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21 // for more details.
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22 //
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23 // You should have received a copy of the GNU General Public License along
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24 // with eCos; if not, write to the Free Software Foundation, Inc.,
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25 // 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
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26 //
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27 // As a special exception, if other files instantiate templates or use macros
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28 // or inline functions from this file, or you compile this file and link it
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29 // with other works to produce a work based on this file, this file does not
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30 // by itself cause the resulting work to be covered by the GNU General Public
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31 // License. However the source code for this file must still be made available
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32 // in accordance with section (3) of the GNU General Public License.
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33 //
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34 // This exception does not invalidate any other reasons why a work based on
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35 // this file might be covered by the GNU General Public License.
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36 //
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37 // Alternative licenses for eCos may be arranged by contacting Red Hat, Inc.
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38 // at http://sources.redhat.com/ecos/ecos-license/
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39 // -------------------------------------------
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40 //####ECOSGPLCOPYRIGHTEND####
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41 //==========================================================================
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42 //#####DESCRIPTIONBEGIN####
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43 //
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44 // Author(s): gthomas
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45 // Contributors: gthomas
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46 // Date: 2000-07-14
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47 // Purpose:
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48 // Description:
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49 //
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50 // This code is part of RedBoot (tm).
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51 //
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52 //####DESCRIPTIONEND####
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53 //
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54 //==========================================================================
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55
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56 #include "redboot.h"
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57
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58 static unsigned long ticks = 0;
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59 static long elapsed = 0;
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60
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61 unsigned long
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62 do_ms_tick(void)
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63 {
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64 CYGACC_CALL_IF_DELAY_US(CYGDBG_REDBOOT_TICK_GRANULARITY);
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65 elapsed += CYGDBG_REDBOOT_TICK_GRANULARITY;
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66 if (elapsed >= 1000) {
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67 elapsed = 0;
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68 ticks++;
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69 }
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70 return ticks;
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71 }
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72
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73 unsigned long
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74 get_ms_ticks(void)
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75 {
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76 return ticks;
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77 }