#include "sfhdr.h"
#if __STD_C
int sfclose(reg Sfio_t* f)
#else
int sfclose(f)
reg Sfio_t* f;
#endif
{
reg int local, ex, rv;
Void_t* data = NIL(Void_t*);
SFMTXSTART(f, -1);
GETLOCAL(f,local);
if(!(f->mode&SF_INIT) &&
SFMODE(f,local) != (f->mode&SF_RDWR) &&
SFMODE(f,local) != (f->mode&(SF_READ|SF_SYNCED)) &&
_sfmode(f,0,local) < 0)
SFMTXRETURN(f,-1);
while(f->push)
{ reg Sfio_t* pop;
if(!(pop = (*_Sfstack)(f,NIL(Sfio_t*))) )
SFMTXRETURN(f,-1);
if(sfclose(pop) < 0)
{ (*_Sfstack)(f,pop);
SFMTXRETURN(f,-1);
}
}
rv = 0;
if(f->disc == _Sfudisc)
f->disc = NIL(Sfdisc_t*);
else if(f->file >= 0)
{ f->bits |= SF_ENDING;
rv = sfsync(f);
}
SFLOCK(f,0);
if(f->disc && (ex = SFRAISE(f,local ? SF_NEW : SF_CLOSING,NIL(Void_t*))) != 0)
SFMTXRETURN(f,ex);
if(!local && f->pool)
{
if(f->pool == &_Sfpool)
{ reg int n;
POOLMTXLOCK(&_Sfpool);
for(n = 0; n < _Sfpool.n_sf; ++n)
{ if(_Sfpool.sf[n] != f)
continue;
_Sfpool.n_sf -= 1;
for(; n < _Sfpool.n_sf; ++n)
_Sfpool.sf[n] = _Sfpool.sf[n+1];
break;
}
POOLMTXUNLOCK(&_Sfpool);
}
else
{ f->mode &= ~SF_LOCK; ASSERT(_Sfpmove);
if((*_Sfpmove)(f,-1) < 0)
{ SFOPEN(f,0);
SFMTXRETURN(f,-1);
}
f->mode |= SF_LOCK;
}
f->pool = NIL(Sfpool_t*);
}
if(f->data && (!local || (f->flags&SF_STRING) || (f->bits&SF_MMAP) ) )
{
#ifdef MAP_TYPE
if(f->bits&SF_MMAP)
SFMUNMAP(f,f->data,f->endb-f->data);
else
#endif
if(f->flags&SF_MALLOC)
data = (Void_t*)f->data;
f->data = NIL(uchar*);
f->size = -1;
}
if(_Sfnotify)
(*_Sfnotify)(f,SF_CLOSING,f->file);
if(f->file >= 0 && !(f->flags&SF_STRING))
CLOSE(f->file);
f->file = -1;
SFKILL(f);
f->flags &= SF_STATIC;
f->here = 0;
f->extent = -1;
f->endb = f->endr = f->endw = f->next = f->data;
if(f->rsrv)
{ free(f->rsrv);
f->rsrv = NIL(Sfrsrv_t*);
}
if(f->proc)
rv = _sfpclose(f);
if(f->mutex)
{ vtmtxclrlock(f->mutex);
if(f != sfstdin && f != sfstdout && f != sfstderr)
{ vtmtxclose(f->mutex);
f->mutex = NIL(Vtmutex_t*);
}
}
if(!local)
{ if(f->disc && (ex = SFRAISE(f,SF_FINAL,NIL(Void_t*))) != 0 )
{ rv = ex;
goto done;
}
if(!(f->flags&SF_STATIC) )
free(f);
else
{ f->disc = NIL(Sfdisc_t*);
f->stdio = NIL(Void_t*);
f->mode = SF_AVAIL;
}
}
done:
if(data)
free(data);
return rv;
}