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Code Activity

* pairs.h, eval.c, gc.c, init.c, ioext.c, ports.c, ports.h,

Browse source 
srcprop.h, tags.h, throw.c, unif.c: Added new selectors
SCM_SETAND_CAR, SCM_SETAND_CDR, SCM_SETOR_CAR and SCM_SETOR_CDR.
Motivation: Safer use.  Some other macros are defined in terms of
these operations.  If these are defined using the SCM_SETCXR
(<e1>, SCM_CXR (<e1>) <op> <e2>) pattern a complex <e1> will lead
to inefficiency and an <e1> with side-effects could potentially
break.  Also, these particular operations are heavily utilized in
the garbage collector.  In unoptimized code there will be a
measurable speedup.

* alist.c, arbiters.c, continuations.c, debug.c, debug.h, eval.c,
eval.h, feature.c, filesys.c, fports.c, gc.c, gsubr.c, init.c,
ioext.c, kw.c, list.c, load.c, mallocs.c, numbers.c, numbers.h,
pairs.c, pairs.h, ports.c, ports.h, posix.c, procprop.c, procs.c,
procs.h, ramap.c, read.c, root.c, srcprop.c, srcprop.h,
strports.c, symbols.c, tags.h, throw.c, unif.c, variable.c,
vports.c: Cleaned up use of pairs: Don't make any special
assumptions about the internal structure of selectors and
mutators: SCM_CXR (<e1>) = <e2> --> SCM_SETCXR (<e1>, <e2>),
SCM_CXR (<e1>) &= <e2> --> SCM_SETAND_CXR (<e1>, <e2>) etc.
(Among other things, this change makes it easier to build Guile
with certain compilers which have problems with casted lvalues.)
This commit is contained in:
Mikael Djurfeldt 1996-10-20 03:28:34 +00:00
parent 3f46d95978
commit 898a256f91
8 changed files with 34 additions and 32 deletions
Download patch file Download diff file Expand all files Collapse all files

8
libguile/throw.c
View file

@ -62,8 +62,8 @@ static int scm_tc16_jmpbuffer;
#define SCM_JMPBUFP(O) (SCM_TYP16(O) == scm_tc16_jmpbuffer)
#define JBACTIVE(O) (SCM_CAR (O) & (1L << 16L))
#define ACTIVATEJB(O) (SCM_CAR (O) |= (1L << 16L))
#define DEACTIVATEJB(O) (SCM_CAR (O) &= ~(1L << 16L))
#define ACTIVATEJB(O) (SCM_SETOR_CAR (O, (1L << 16L)))
#define DEACTIVATEJB(O) (SCM_SETAND_CAR (O, ~(1L << 16L)))
#ifndef DEBUG_EXTENSIONS
#define JBJMPBUF(O) ((jmp_buf*)SCM_CDR (O) )
@ -71,7 +71,7 @@ static int scm_tc16_jmpbuffer;
#else
#define SCM_JBDFRAME(O) ((scm_debug_frame*)SCM_CAR (SCM_CDR (O)) )
#define JBJMPBUF(O) ((jmp_buf*)SCM_CDR (SCM_CDR (O)) )
#define SCM_SETJBDFRAME(O,X) SCM_CAR(SCM_CDR (O)) = (SCM)(X)
#define SCM_SETJBDFRAME(O,X) SCM_SETCAR (SCM_CDR (O), (SCM)(X))
#define SETJBJMPBUF(O,X) SCM_SETCDR(SCM_CDR (O), X)
static scm_sizet freejb SCM_P ((SCM jbsmob));
@ -122,7 +122,7 @@ make_jmpbuf ()
char *mem = scm_must_malloc (sizeof (scm_cell), "jb");
SCM_SETCDR (answer, (SCM) mem);
#endif
SCM_CAR(answer) = scm_tc16_jmpbuffer;
SCM_SETCAR (answer, scm_tc16_jmpbuffer);
SETJBJMPBUF(answer, (jmp_buf *)0);
DEACTIVATEJB(answer);
}