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# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
include <error.h>
include <gio.h>
include "gtr.h"
# GTR_RESET -- Reset the graphics system. Disconnect all connected subkernels
# and free all file descriptors and memory.
procedure gtr_reset (status)
int status # not used (req. for ONEXIT)
pointer tr
int stream
bool streq()
include "gtr.com"
begin
do stream = STDGRAPH, STDPLOT {
tr = trdes[stream]
if (tr == NULL)
next
iferr {
# Close device graphcap descriptor.
if (TR_TTY(tr) != NULL)
call ttycdes (TR_TTY(tr))
# Disconnect old kernel.
if (streq (TR_KERNFNAME(tr), "cl"))
call stg_close()
else if (TR_DEVNAME(tr) != EOS && TR_KERNFNAME(tr) != EOS) {
call gtr_disconnect (TR_PID(tr),
TR_IN(tr), TR_OUT(tr), stream)
TR_PID(tr) = NULL
TR_IN(tr) = NULL
TR_OUT(tr) = NULL
}
} then {
TR_DEVNAME(tr) = EOS
call erract (EA_WARN)
} else
TR_DEVNAME(tr) = EOS
# Free all storage.
call mfree (TR_FRAMEBUF(tr), TY_SHORT)
call mfree (TR_SCRATCHBUF(tr), TY_SHORT)
call mfree (tr, TY_STRUCT)
trdes[stream] = NULL
}
end
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