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/* $Id: session.c,v 1.4 2003/09/01 15:04:26 skaus Exp $
$Locker: $ $Name: $ $State: Exp $
Save/restore the current session
this copies the Context into near memory (if space allows)
and restores it later
$Log: session.c,v $
Revision 1.4 2003/09/01 15:04:26 skaus
bugfix: LOADHIGH: deallocating context if /L is present {Tom Ehlert}
Revision 1.3 2002/11/12 21:56:17 skaus
v0.83 Beta 52:
Revision 1.2 2002/11/12 19:48:48 skaus
bugfix: COPY: additional output to honor redirection {Eric Auer} [bugID #1313]
Revision 1.1 2002/11/12 18:31:57 skaus
add: save/restore session (swap context) {Tom Ehlert}
*/
#include "../config.h"
#include <assert.h>
#include <stdlib.h>
#include <string.h>
#include <suppl.h>
#include <mcb.h>
#include <environ.h>
#include "..\err_fcts.h"
#include "..\include\command.h"
#include "..\include\context.h"
#include "..\include\crossjmp.h"
#include "..\include\misc.h"
static unsigned ctxtSavedSize;
static void *ctxtSavePtr;
void saveSession(void)
{
if(ctxt && swapContext) {
ctxtSavedSize = mcb_length(ctxt);
dprintf(("[MEM: save context: %u bytes from 0x%04x]\n"
, ctxtSavedSize, ctxt));
ctxtSavePtr = malloc(ctxtSavedSize);
if(ctxtSavePtr) {
_fmemcpy(ctxtSavePtr, MK_FP(ctxt,0), ctxtSavedSize);
DOSfree(ctxt);
#ifdef DEBUG
ctxt = 0;
#endif
}
}
}
void restoreSession(void)
{
assert(ctxt == 0);
if(ctxtSavePtr) {
dprintf(("[MEM: restore context: %u bytes]\n", ctxtSavedSize));
ctxtCreateMemBlock(ctxtSavedSize);
_fmemcpy( MK_FP(ctxt,0), ctxtSavePtr, ctxtSavedSize);
free(ctxtSavePtr);
ctxtSavePtr = 0;
}
}
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