Sweden-Number/dlls/crtdll/exit.c

187 lines
4.9 KiB
C

/*
* CRTDLL exit/abort/atexit functions
*
* Copyright 1996,1998 Marcus Meissner
* Copyright 1996 Jukka Iivonen
* Copyright 1997,2000 Uwe Bonnes
* Copyright 2000 Jon Griffiths
*
* exit functions differ in whether they perform cleanup
* and whether they return to the caller (really!).
* return do
* Name to caller? cleanup?
* _c_exit Y N
* _cexit Y Y
* _exit N N
* exit N Y
*
* Implementation Notes:
* Not MT Safe - Adding/Executing exit() functions should be locked
* for MT safety.
*
* FIXME:
* Need a better way of printing errors for GUI programs(MsgBox?).
* Is there really a difference between onexit/atexit?
*/
#include "crtdll.h"
#include <errno.h>
DEFAULT_DEBUG_CHANNEL(crtdll);
/* INTERNAL: Table of registered atexit() functions */
/* FIXME: This should be dynamically allocated */
#define CRTDLL_ATEXIT_TABLE_SIZE 16
static atexit_function atexit_table[CRTDLL_ATEXIT_TABLE_SIZE];
static int atexit_registered = 0; /* Points to free slot */
/* INTERNAL: call atexit functions */
void __CRTDLL__call_atexit(VOID);
void __CRTDLL__call_atexit(VOID)
{
/* Last registered gets executed first */
while (atexit_registered > 0)
{
atexit_registered--;
TRACE(":call function (%p)\n",atexit_table[atexit_registered]);
(*atexit_table[atexit_registered])();
}
}
/*********************************************************************
* __dllonexit (CRTDLL.25)
*/
VOID __cdecl CRTDLL___dllonexit ()
{
FIXME("stub\n");
}
/*********************************************************************
* _abnormal_termination (CRTDLL.36)
*
* Check if execution is processing during an exception.
*/
INT __cdecl CRTDLL__abnormal_termination(VOID)
{
TRACE("(void)\n");
return 0; /* FIME: Can we determine if we are in an exception? */
}
/*********************************************************************
* _amsg_exit (CRTDLL.040)
*
* Print an error message and terminate execution. Returns 255 to the
* host OS.
*/
VOID __cdecl CRTDLL__amsg_exit(INT err)
{
/* FIXME: Should be a popup for msvcrt gui executables, and should have
* text for the error number.
*/
CRTDLL_fprintf(CRTDLL_stderr,"\nruntime error R60%d\n",err);
CRTDLL__exit(255);
}
/*********************************************************************
* _assert (CRTDLL.041)
*
* Print an assertion message and call abort(). Really only present
* for win binaries. Winelib programs would typically use libc's
* version.
*/
VOID __cdecl CRTDLL__assert(LPVOID str, LPVOID file, UINT line)
{
CRTDLL_fprintf(CRTDLL_stderr,"Assertion failed: %s, file %s, line %d\n\n",
(char*)str,(char*)file, line);
CRTDLL_abort();
}
/*********************************************************************
* _c_exit (CRTDLL.047)
*/
VOID __cdecl CRTDLL__c_exit(VOID)
{
/* All cleanup is done on DLL detach; Return to caller */
}
/*********************************************************************
* _cexit (CRTDLL.049)
*/
VOID __cdecl CRTDLL__cexit(VOID)
{
/* All cleanup is done on DLL detach; Return to caller */
}
/*********************************************************************
* _exit (CRTDLL.087)
*/
VOID __cdecl CRTDLL__exit(LONG ret)
{
TRACE(":exit code %ld\n",ret);
CRTDLL__c_exit();
ExitProcess(ret);
}
/*********************************************************************
* _onexit (CRTDLL.236)
*
* Register a function to be called when the process terminates.
*/
atexit_function __cdecl CRTDLL__onexit( atexit_function func)
{
TRACE("registering function (%p)\n",func);
if (func && atexit_registered <= CRTDLL_ATEXIT_TABLE_SIZE - 1)
{
atexit_table[atexit_registered] = (atexit_function)func;
atexit_registered++;
return func; /* successful */
}
ERR(":Too many onexit() functions, or NULL function - not registered!\n");
return NULL;
}
/*********************************************************************
* exit (CRTDLL.359)
*/
void __cdecl CRTDLL_exit(DWORD ret)
{
TRACE(":exit code %ld\n",ret);
__CRTDLL__call_atexit();
CRTDLL__cexit();
ExitProcess(ret);
}
/*********************************************************************
* abort (CRTDLL.335)
*
* Terminate the progam with an abnormal termination message. Returns
* 3 to the host OS.
*/
VOID __cdecl CRTDLL_abort()
{
CRTDLL_fprintf(CRTDLL_stderr,"\nabnormal program termination\n");
CRTDLL__exit(3);
}
/*********************************************************************
* atexit (CRTDLL.345)
*
* Register a function to be called when the process terminates.
*/
INT __cdecl CRTDLL_atexit( atexit_function func)
{
return CRTDLL__onexit(func) == func ? 0 : -1;
}