cplusglob.cpp

来自「vxworks源码源码解读是学习vxworks的最佳途径」· C++ 代码 · 共 74 行

/* cplusGlob.cpp - support for calling all linked C++ static ctors/dtors */

/* Copyright 1993 Wind River Systems, Inc. */
#include "copyright_wrs.h"

/*
modification history
--------------------
01f,17mar99,sn   made ctorsInitialized global and changed its name to
                 linkedCtorsInitialized
01e,17oct96,bjl  modified cplusCtorsLink to do nothing if it has already 
		 been called
01d,10oct94,srh  fixed interface between cplus[CD]torsLink and_[cd]tors arrays
01c,18jun93,jdi  more doc cleanup.
01b,03jun93,srh  doc cleanup
01a,25apr93,srh  written
*/

/*
* DESCRIPTION
* This module provides interfaces to cplusCallCtors and cplusCallDtors
* for C++ modules that are linked with VxWorks. These functions should
* be called from usrRoot.
*
* NOMANUAL
*/

#include "vxWorks.h"
#include "cplusLib.h"

extern VOIDFUNCPTR _ctors[];
extern VOIDFUNCPTR _dtors[];

/******************************************************************************
*
* cplusCtorsLink - call all linked static constructors (C++)
*
* This function calls constructors for all of the static objects linked
* with a VxWorks bootable image.  When creating bootable applications,
* this function should be called from usrRoot() to initialize all static
* objects.  Correct operation depends on correctly munching the C++
* modules that are linked with VxWorks.
*
* RETURNS: N/A
*/

BOOL linkedCtorsInitialized = FALSE;

extern "C" void cplusCtorsLink ()
    {
    if (!linkedCtorsInitialized)
       {
       cplusCallCtors (_ctors);
       linkedCtorsInitialized = TRUE;
       }
    }

/******************************************************************************
*
* cplusDtorsLink - call all linked static destructors (C++)
*
* This function calls destructors for all of the static objects linked
* with a VxWorks bootable image.  When creating bootable applications,
* this function should be called during system shutdown to decommission
* all static objects.  Correct operation depends on correctly munching
* the C++ modules that are linked with VxWorks.
*
* RETURNS: N/A
*/
extern "C" void cplusDtorsLink ()
    {
    cplusCallDtors (_dtors);
    }