phil.c
来自「澳洲人写的Cortex,包括uC_IP协议栈」· C语言 代码 · 共 187 行
C
187 行
<HTML><HEAD><TITLE>/home/asysweb/public_html/cortex/examples/exmpl3/src/phil.c</TITLE></HEAD><BODY><pre><font color="#6920ac">/*************************************************************************/</font><font color="#6920ac">/* */</font><font color="#6920ac">/* Copyright (c) 1997-1999 Australian Real Time Embedded Systems */</font><font color="#6920ac">/* */</font><font color="#6920ac">/* PROPRIETARY RIGHTS of Australian Real Time Embedded Systems */</font><font color="#6920ac">/* are involved in the subject matter of this material. All reproduction,*/</font><font color="#6920ac">/* manufacturing, use, and sales rights pertaining to this subject matter*/</font><font color="#6920ac">/* are governed by the license agreement. The recipient of this software */</font><font color="#6920ac">/* implicitly accepts the terms of the license. */</font><font color="#6920ac">/* */</font><font color="#6920ac">/*************************************************************************/</font><b><font color='DarkGreen'>#include</font></b> <a href="cortex.h.FIND-INC"><font color="blue">"cortex.h"</font></a><b><font color='DarkGreen'>#include</font></b> <a href="plt_defs.h.FIND-INC"><font color="blue">"plt_defs.h"</font></a><b><font color='DarkGreen'>#include</font></b> <a href="prn_defs.h.FIND-INC"><font color="blue">"prn_defs.h"</font></a><b><font color='DarkGreen'>#include</font></b> <a href="stdlib.h.FIND-INC"><font color="blue">"stdlib.h"</font></a><font color="#6920ac">/* the number of dining philosophers */</font><b><font color='DarkGreen'>#ifndef</font></b><font color="maroon"> PHIL_NUMBER</font><b><font color='DarkGreen'># define</font></b> <font color="maroon"><a name="PHIL_NUMBER">PHIL_NUMBER</a></font> 10<b><font color='DarkGreen'>#endif</font></b><font color="maroon"></font><font color="#6920ac">/* must be greater than 0 and not greater than 32 */</font><font color="#6920ac">/* due to number of event flags in an event object */</font><b><font color='DarkGreen'>#if</font></b><font color="maroon"> (((PHIL_NUMBER) < 1 ) || ((PHIL_NUMBER) > 32 ))</font><b><font color='DarkGreen'># error</font></b><font color="maroon"> Wrong number of philosophers</font><b><font color='DarkGreen'># undef</font></b><font color="maroon"> PHIL_NUMBER</font><b><font color='DarkGreen'># define</font></b> <font color="maroon"><a name="PHIL_NUMBER">PHIL_NUMBER</a></font> 1<b><font color='DarkGreen'>#endif</font></b><font color="maroon"></font><font color="#6920ac">/* time to think */</font><b><font color='DarkGreen'>#define</font></b> <font color="maroon"><a name="PHIL_THINK_TIME">PHIL_THINK_TIME</a></font> (rand()%10)<b><font color='DarkGreen'>#define</font></b> <font color="maroon"><a name="PHIL_EATING_TIME">PHIL_EATING_TIME</a></font> (rand()%15)<font color="#6920ac">/* time to print trace */</font><b><font color='DarkGreen'>#define</font></b> <font color="maroon"><a name="PHIL_PRINT_TIME">PHIL_PRINT_TIME</a></font> TICK_SECS_TO_TICKS(3)<font color="#6920ac">/* a structure to collect data about philosophers */</font><i><a name="phil_Info_t">typedef</a></i> <i>struct</i>{ <i>crtx_Int32_t</i> ThinkTimes; <i>crtx_Int32_t</i> EatTimes;} <i><font color='DarkBlue'>phil_Info_t</font></i>;<i>phil_Info_t</i> phil_Info[<a href="#PHIL_NUMBER">PHIL_NUMBER</a>];<font color="#6920ac">/* a pointer to the event control block */</font><i>evnt_Events_t</i> *pphil_Event;<font color="#6920ac">/* a philosopher is thinking */</font><font size="+1"><i>crtx_Void_t</i> <b><font color="azure1"><a name="phil_Think">phil_Think</a></font></b>(<i>int</i> PhilNum_a){</font> phil_Info[PhilNum_a].ThinkTimes++; <a href="task_Sleep.FIND-FUNC">task_Sleep</a>(<a href="#PHIL_THINK_TIME">PHIL_THINK_TIME</a>);}<font color="#6920ac">/* a philosopher takes his forks */</font><font size="+1"><i>crtx_Void_t</i> <b><font color="azure1"><a name="phil_TakeForks">phil_TakeForks</a></font></b>(<i>int</i> PhilNum_a){</font> <a href="evnt_Wait.FIND-FUNC">evnt_Wait</a>(pphil_Event,((((<i>evnt_Mask_t</i>)1) << PhilNum_a) | (((<i>evnt_Mask_t</i>)1) << ((PhilNum_a+1)%<a href="#PHIL_NUMBER">PHIL_NUMBER</a>))), <a href="CRTX_NULL.FIND-DEF">CRTX_NULL</a>, <a href="EVNT_CONSUME.FIND-DEF">EVNT_CONSUME</a>, <a href="CRTX_NULL.FIND-DEF">CRTX_NULL</a>);}<font color="#6920ac">/* a philosopher releases forks */</font><font size="+1"><i>crtx_Void_t</i> <b><font color="azure1"><a name="phil_PutForks">phil_PutForks</a></font></b>(<i>int</i> PhilNum_a){</font> <a href="evnt_Set.FIND-FUNC">evnt_Set</a>(pphil_Event,((((<i>evnt_Mask_t</i>)1) << PhilNum_a) | (((<i>evnt_Mask_t</i>)1) << ((PhilNum_a+1)%<a href="#PHIL_NUMBER">PHIL_NUMBER</a>))));}<font color="#6920ac">/* a philosopher is eating */</font><font size="+1"><i>crtx_Void_t</i> <b><font color="azure1"><a name="phil_Eat">phil_Eat</a></font></b>(<i>int</i> PhilNum_a){</font> phil_Info[PhilNum_a].EatTimes++; <a href="task_Sleep.FIND-FUNC">task_Sleep</a>(<a href="#PHIL_EATING_TIME">PHIL_EATING_TIME</a>);}<font color="#6920ac">/* a process/task a philosopher */</font><font size="+1"><i>crtx_Void_t</i> <b><font color="azure1"><a name="phil_philosopher">phil_philosopher</a></font></b>(<i>int</i> PhilNum_a){</font> <b>while</b> (1) { <a href="#phil_Think">phil_Think</a>(PhilNum_a); <a href="#phil_TakeForks">phil_TakeForks</a>(PhilNum_a); <a href="#phil_Eat">phil_Eat</a>(PhilNum_a); <a href="#phil_PutForks">phil_PutForks</a>(PhilNum_a); }}<font color="#6920ac">/* main function */</font><font size="+1"><i>crtx_Void_t</i> <b><font color="azure1"><a name="crtx_Main">crtx_Main</a></font></b>( <i>crtx_Int_t</i> ArgC_a, <i>crtx_Void_t</i> *pArgV_a, <i>crtx_Void_t</i> *pEnvV_a){</font><font color="#6920ac">/********************* * LOCAL VARIABLES * *********************/</font> <i>crtx_Int_t</i> i; <i>task_Attr_t</i> TAttr; <i>tick_Time_t</i> SysTime; <i>crtx_Char_t</i> str[20]; <font color="#6920ac">/********************* * PROCEDURE LOGIC * *********************/</font> <font color="#6920ac">/* call the platform init function */</font> <a href="pltf_Init.FIND-FUNC">pltf_Init</a>(ArgC_a, pArgV_a, pEnvV_a); <a href="printf.FIND-FUNC">printf</a>(<font color="DarkGreen">"\n%s (Version: %s)\n\n"</font>, <a href="syst_Copyright.FIND-FUNC">syst_Copyright</a>(), <a href="syst_VersionStr.FIND-FUNC">syst_VersionStr</a>()); <a href="printf.FIND-FUNC">printf</a>(<font color="DarkGreen">"%d Dining Philosophers:\n"</font>, <a href="#PHIL_NUMBER">PHIL_NUMBER</a>); <b>for</b> (i=0; i < <a href="#PHIL_NUMBER">PHIL_NUMBER</a> ; i++) { phil_Info[ i ].ThinkTimes = 0; phil_Info[ i ].EatTimes = 0; } <font color="#6920ac">/* create event control block with initial 1-s for all forks */</font> pphil_Event = <a href="evnt_Create.FIND-FUNC">evnt_Create</a>(<a href="CRTX_NULL.FIND-DEF">CRTX_NULL</a>, ~(-1l << ( <a href="#PHIL_NUMBER">PHIL_NUMBER</a>)), <a href="CRTX_NULL.FIND-DEF">CRTX_NULL</a>); <b>if</b> (pphil_Event == <a href="CRTX_NULL.FIND-DEF">CRTX_NULL</a>) { <a href="printf.FIND-FUNC">printf</a>(<font color="DarkGreen">"Create event control block failed\n"</font>); <a href="exit.FIND-FUNC">exit</a>(0); } <font color="#6920ac">/* create tasks for all philosophers */</font> <b>for</b> (i = 0; i < <a href="#PHIL_NUMBER">PHIL_NUMBER</a>; i++) { TAttr = task_AttrDefault_g; <b>if</b> (<a href="task_Create1.FIND-FUNC">task_Create1</a>((<i>task_Entry1_t</i>)phil_philosopher, &TAttr, <a href="CRTX_NULL.FIND-DEF">CRTX_NULL</a>, i, <a href="CRTX_NULL.FIND-DEF">CRTX_NULL</a>) == <a href="TASK_ILLEGAL_ID.FIND-DEF">TASK_ILLEGAL_ID</a>) { <a href="printf.FIND-FUNC">printf</a>(<font color="DarkGreen">"Create task for philosopher %d failed\n"</font>, i + 1); <a href="exit.FIND-FUNC">exit</a>(0); } } <b>while</b> ( 1 ) { <font color="#6920ac">/* print philosopher statistics */</font> <a href="tick_GetSystemTime.FIND-FUNC">tick_GetSystemTime</a>(&SysTime); <a href="printf.FIND-FUNC">printf</a>(<font color="DarkGreen">"At %02ld:%02ld:%02ld "</font>, SysTime.tv_sec/3600, (SysTime.tv_sec%3600)/60, SysTime.tv_sec%60); <b>for</b> (i = 0; i < <a href="#PHIL_NUMBER">PHIL_NUMBER</a>; i++) { <a href="sprintf.FIND-FUNC">sprintf</a>(str,<font color="DarkGreen">"phil#%d"</font>, i + 1); <a href="printf.FIND-FUNC">printf</a>(<font color="DarkGreen">"%10s"</font>, str); } <a href="printf.FIND-FUNC">printf</a>(<font color="DarkGreen">"\n"</font>); <a href="printf.FIND-FUNC">printf</a>(<font color="DarkGreen">" %-12s "</font>,<font color="DarkGreen">"Thinking"</font>); <b>for</b> (i = 0; i < <a href="#PHIL_NUMBER">PHIL_NUMBER</a>; i++) { <a href="printf.FIND-FUNC">printf</a>(<font color="DarkGreen">"%10ld"</font>, phil_Info[ i ].ThinkTimes); } <a href="printf.FIND-FUNC">printf</a>(<font color="DarkGreen">"\n"</font>); <a href="printf.FIND-FUNC">printf</a>(<font color="DarkGreen">" %-12s "</font>,<font color="DarkGreen">"Eating"</font>); <b>for</b> (i = 0; i < <a href="#PHIL_NUMBER">PHIL_NUMBER</a>; i++) { <a href="printf.FIND-FUNC">printf</a>(<font color="DarkGreen">"%10ld"</font>, phil_Info[ i ].EatTimes); } <a href="printf.FIND-FUNC">printf</a>(<font color="DarkGreen">"\n"</font>); <a href="task_Sleep.FIND-FUNC">task_Sleep</a>(<a href="#PHIL_PRINT_TIME">PHIL_PRINT_TIME</a>); }}</pre></BODY></HTML>⌨️ 快捷键说明
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