thr_core.c
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<HTML><HEAD><TITLE>/home/asysweb/public_html/cortex/kernel/src/thr_core.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><font color="#6920ac">/************************************************************************* * * FILE NAME * * thr_core.c * * SYSTEM COMPONENT * * Thread Management Component * * DESCRIPTION * * This file contains all core services for for Thread * Management Component * * SERVICES * * * SCCS HISTORY * * @(#)thr_core.c 1.24, 02/01/00, 11:06:20 * * AUTHOR * * Vadim N. Azarovsky * * CREATED * * 10-Apr-1998 by Vadim N. Azarovsky * * REVISION HISTORY * * NAME DATE REMARKS * **************************************************************************/</font><b><font color='DarkGreen'>#include</font></b> <a href="thr_priv.h.FIND-INC"><font color="blue">"thr_priv.h"</font></a><b><font color='DarkGreen'>#include</font></b> <a href="ass_defs.h.FIND-INC"><font color="blue">"ass_defs.h"</font></a><b><font color='DarkGreen'>#include</font></b> <a href="fmt_defs.h.FIND-INC"><font color="blue">"fmt_defs.h"</font></a><b><font color='DarkGreen'>#include</font></b> <a href="hwi_priv.h.FIND-INC"><font color="blue">"hwi_priv.h"</font></a><b><font color='DarkGreen'>#include</font></b> <a href="sys_defs.h.FIND-INC"><font color="blue">"sys_defs.h"</font></a><b><font color='DarkGreen'>#include</font></b> <a href="mem_defs.h.FIND-INC"><font color="blue">"mem_defs.h"</font></a><b><font color='DarkGreen'>#include</font></b> <a href="tck_priv.h.FIND-INC"><font color="blue">"tck_priv.h"</font></a><b><font color='DarkGreen'>#include</font></b> <a href="ext_priv.h.FIND-INC"><font color="blue">"ext_priv.h"</font></a><b><font color='DarkGreen'>#include</font></b> <a href="string.h.FIND-INC"><<font color="blue">string.h</font>></a><font size="+1"><i>thrd_ID_t</i> <b><font color="azure1"><a name="thrd_Create1">thrd_Create1</a></font></b>( <i>thrd_Entry1_t</i> Entry_a, <i>thrd_Attr_t</i> *pAttr_a, <i>crtx_Status_t</i> *pStatus_a, <i>crtx_Int_t</i> ArgC_a, <i>crtx_Void_t</i> **ppArgV_a){</font><font color="#6920ac">/********************* * LOCAL VARIABLES * *********************/</font> <font color="#6920ac">/* None */</font><font color="#6920ac">/********************* * PROCEDURE LOGIC * *********************/</font> <b>return</b> <a href="#thrd_Create">thrd_Create</a>((<i>thrd_Entry4_t</i>)Entry_a, pAttr_a, pStatus_a, <a href="THRD_FLAG_ARGS_TYPE_1.FIND-DEF">THRD_FLAG_ARGS_TYPE_1</a>, (<i>thrd_Arg_t</i>)ArgC_a, (<i>thrd_Arg_t</i>)ppArgV_a);<font color="#6920ac">/************************ * EXCEPTION HANDLING * ************************/</font> <font color="#6920ac">/* None */</font>}<font size="+1"><i>thrd_ID_t</i> <b><font color="azure1"><a name="thrd_Create2">thrd_Create2</a></font></b>( <i>thrd_Entry2_t</i> Entry_a, <i>thrd_Attr_t</i> *pAttr_a, <i>crtx_Status_t</i> *pStatus_a, <i>crtx_Int_t</i> ArgC_a, <i>crtx_Void_t</i> **ppArgV_a, <i>crtx_Void_t</i> **ppEnvV_a){</font><font color="#6920ac">/********************* * LOCAL VARIABLES * *********************/</font> <font color="#6920ac">/* None */</font><font color="#6920ac">/********************* * PROCEDURE LOGIC * *********************/</font> <b>return</b> <a href="#thrd_Create">thrd_Create</a>((<i>thrd_Entry4_t</i>)Entry_a, pAttr_a, pStatus_a, <a href="THRD_FLAG_ARGS_TYPE_2.FIND-DEF">THRD_FLAG_ARGS_TYPE_2</a>, (<i>thrd_Arg_t</i>)ArgC_a, (<i>thrd_Arg_t</i>)ppArgV_a, (<i>thrd_Arg_t</i>)ppEnvV_a);<font color="#6920ac">/************************ * EXCEPTION HANDLING * ************************/</font> <font color="#6920ac">/* None */</font>}<font size="+1"><i>thrd_ID_t</i> <b><font color="azure1"><a name="thrd_Create3">thrd_Create3</a></font></b>( <i>thrd_Entry3_t</i> Entry_a, <i>thrd_Attr_t</i> *pAttr_a, <i>crtx_Status_t</i> *pStatus_a, <i>crtx_Void_t</i> **ppArgV_a, <i>crtx_Int_t</i> ArgC_a){</font><font color="#6920ac">/********************* * LOCAL VARIABLES * *********************/</font> <font color="#6920ac">/* None */</font><font color="#6920ac">/********************* * PROCEDURE LOGIC * *********************/</font> <b>return</b> <a href="#thrd_Create">thrd_Create</a>((<i>thrd_Entry4_t</i>)Entry_a, pAttr_a, pStatus_a, <a href="THRD_FLAG_ARGS_TYPE_3.FIND-DEF">THRD_FLAG_ARGS_TYPE_3</a>, (<i>thrd_Arg_t</i>)ppArgV_a, (<i>thrd_Arg_t</i>)ArgC_a);<font color="#6920ac">/************************ * EXCEPTION HANDLING * ************************/</font> <font color="#6920ac">/* None */</font>}<font size="+1"><i>thrd_ID_t</i> <b><font color="azure1"><a name="thrd_Create4">thrd_Create4</a></font></b>( <i>thrd_Entry4_t</i> Entry_a, <i>thrd_Attr_t</i> *pAttr_a, <i>crtx_Status_t</i> *pStatus_a, ...){</font><font color="#6920ac">/********************* * LOCAL VARIABLES * *********************/</font> <i>thrd_ID_t</i> ThreadID; <i>va_list</i> ArgVect;<font color="#6920ac">/********************* * PROCEDURE LOGIC * *********************/</font> <a href="va_start.FIND-FUNC">va_start</a>(ArgVect, pStatus_a); ThreadID = <a href="#thrd_CreateV">thrd_CreateV</a>(Entry_a, pAttr_a, pStatus_a, <a href="THRD_FLAG_ARGS_TYPE_4.FIND-DEF">THRD_FLAG_ARGS_TYPE_4</a>, ArgVect); <a href="va_end.FIND-FUNC">va_end</a>(ArgVect); <b>return</b> ThreadID;<font color="#6920ac">/************************ * EXCEPTION HANDLING * ************************/</font> <font color="#6920ac">/* None */</font>}<font size="+1"><i>thrd_ID_t</i> <b><font color="azure1"><a name="thrd_Create">thrd_Create</a></font></b>( <i>thrd_Entry4_t</i> Entry_a, <i>thrd_Attr_t</i> *pAttr_a, <i>crtx_Status_t</i> *pStatus_a, <i>crtx_Int_t</i> ArgType_a, ...){</font><font color="#6920ac">/********************* * LOCAL VARIABLES * *********************/</font> <i>thrd_ID_t</i> ThreadID; <i>va_list</i> ArgVect;<font color="#6920ac">/********************* * PROCEDURE LOGIC * *********************/</font> <a href="va_start.FIND-FUNC">va_start</a>(ArgVect, ArgType_a); ThreadID = <a href="#thrd_CreateV">thrd_CreateV</a>(Entry_a, pAttr_a, pStatus_a, ArgType_a, ArgVect); <a href="va_end.FIND-FUNC">va_end</a>(ArgVect); <b>return</b> ThreadID;<font color="#6920ac">/************************ * EXCEPTION HANDLING * ************************/</font> <font color="#6920ac">/* None */</font>}<font size="+1"><i>thrd_ID_t</i> <b><font color="azure1"><a name="thrd_CreateV">thrd_CreateV</a></font></b>( <i>thrd_Entry4_t</i> Entry_a, <i>thrd_Attr_t</i> *pAttr_a, <i>crtx_Status_t</i> *pStatus_a, <i>crtx_Int_t</i> ArgType_a, <i>va_list</i> ArgVect_a){</font><font color="#6920ac">/********************* * LOCAL VARIABLES * *********************/</font> <i>thrd_ID_t</i> ThreadID; <font color="#6920ac">/* thread id */</font> <i>thrd_TCB_t</i> *pTCB; <font color="#6920ac">/* thread control block */</font> <i>crtx_Status_t</i> Status; <font color="#6920ac">/* status code */</font> <i>ilst_List_t</i> *pList; <font color="#6920ac">/* fre threads list */</font> <i>thrd_State_t</i> State; <font color="#6920ac">/* thread state */</font> <i>crtx_Int_t</i> NrArgs; <font color="#6920ac">/* number of argument */</font> <i>crtx_Int_t</i> i; <font color="#6920ac">/* a counter */</font><font color="#6920ac">/********************* * PROCEDURE LOGIC * *********************/</font> <b>if</b> (pAttr_a == <a href="CRTX_NULL.FIND-DEF">CRTX_NULL</a>) pAttr_a = &thrd_AttrDefault_g; <font color="#6920ac">/* verify type of argiments */</font> <b>if</b> ((ArgType_a != <a href="THRD_FLAG_ARGS_TYPE_1.FIND-DEF">THRD_FLAG_ARGS_TYPE_1</a>) && (ArgType_a != <a href="THRD_FLAG_ARGS_TYPE_2.FIND-DEF">THRD_FLAG_ARGS_TYPE_2</a>) && (ArgType_a != <a href="THRD_FLAG_ARGS_TYPE_3.FIND-DEF">THRD_FLAG_ARGS_TYPE_3</a>) && (ArgType_a != <a href="THRD_FLAG_ARGS_TYPE_4.FIND-DEF">THRD_FLAG_ARGS_TYPE_4</a>)) { Status = <a href="THRD_ERR_INVALID_PARAMS.FIND-DEF">THRD_ERR_INVALID_PARAMS</a>; <a href="CRTX_EXCEPTION.FIND-DEF">CRTX_EXCEPTION</a> ErrInvalidParams_Exc; } <font color="#6920ac">/* verify priority */</font> <b>if</b> ((pAttr_a->Priority<<a href="PRIO_MIN.FIND-DEF">PRIO_MIN</a>) || (pAttr_a->Priority><a href="PRIO_MAX.FIND-DEF">PRIO_MAX</a>)) { Status = <a href="THRD_ERR_INVALID_PARAMS.FIND-DEF">THRD_ERR_INVALID_PARAMS</a>; <a href="CRTX_EXCEPTION.FIND-DEF">CRTX_EXCEPTION</a> ErrInvalidParams_Exc; } <font color="#6920ac">/* verify thread entry */</font> <b>if</b> (Entry_a == <a href="CRTX_NULL.FIND-DEF">CRTX_NULL</a>) { Status = <a href="THRD_ERR_INVALID_PARAMS.FIND-DEF">THRD_ERR_INVALID_PARAMS</a>; <a href="CRTX_EXCEPTION.FIND-DEF">CRTX_EXCEPTION</a> ErrInvalidParams_Exc; } <font color="#6920ac">/* verify thread state */</font> State = pAttr_a->State; <b>if</b> (State == <a href="THRD_RUNNING.FIND-DEF">THRD_RUNNING</a>) State = <a href="THRD_READY.FIND-DEF">THRD_READY</a>; <b>if</b> ((State != <a href="THRD_READY.FIND-DEF">THRD_READY</a>) && (State != <a href="THRD_DEFERRED.FIND-DEF">THRD_DEFERRED</a>)) { Status = <a href="THRD_ERR_INVALID_PARAMS.FIND-DEF">THRD_ERR_INVALID_PARAMS</a>; <a href="CRTX_EXCEPTION.FIND-DEF">CRTX_EXCEPTION</a> ErrInvalidParams_Exc; } <font color="#6920ac">/* verify scheduling policy */</font> <b>if</b> ((pAttr_a->SchdPolicy != thrd_SchdRoundRobin) && (pAttr_a->SchdPolicy != thrd_SchdTimeSharing) && (pAttr_a->SchdPolicy != thrd_SchdTimeSlicingRR) && (pAttr_a->SchdPolicy != thrd_SchdOther)) { Status = <a href="THRD_ERR_INVALID_PARAMS.FIND-DEF">THRD_ERR_INVALID_PARAMS</a>; <a href="CRTX_EXCEPTION.FIND-DEF">CRTX_EXCEPTION</a> ErrInvalidParams_Exc; } <a href="rrlc_Lock.FIND-FUNC">rrlc_Lock</a>(&thrd_Environ_g.Lock); <font color="#6920ac">/* allocate TheadID for a new thread */</font> pList = <a href="THRD_FREE_LIST.FIND-DEF">THRD_FREE_LIST</a>(); <b>if</b> (<a href="ilst_IsEmpty.FIND-FUNC">ilst_IsEmpty</a>(pList)) {⌨️ 快捷键说明
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