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