#ifndef _SBCL_RUNTIME_H_
#define _SBCL_RUNTIME_H_
-/*#define QSHOW */ /* Enable low-level debugging output? */
-
-#ifdef QSHOW
-#define FSHOW(args) fprintf args
-#define SHOW(string) FSHOW((stderr, "/%s\n", string))
+#if defined(LISP_FEATURE_SB_THREAD)
+#define thread_self() pthread_self()
+#define thread_kill pthread_kill
+#define thread_sigmask pthread_sigmask
+#define thread_mutex_lock(l) pthread_mutex_lock(l)
+#define thread_mutex_unlock(l) pthread_mutex_unlock(l)
#else
-#define FSHOW(args)
-#define SHOW(string)
+#define thread_self() 0
+#define thread_kill kill_safely
+#define thread_sigmask sigprocmask
+#define thread_mutex_lock(l) 0
+#define thread_mutex_unlock(l) 0
#endif
+/* Block blockable interrupts for each SHOW, if not 0. */
+#define QSHOW_SIGNAL_SAFE 1
/* Enable extra-verbose low-level debugging output for signals? (You
* probably don't want this unless you're trying to debug very early
* cold boot on a new machine, or one where you've just messed up
* causes output from signal handlers, and the i/o libraries aren't
* necessarily reentrant. But it can still be very convenient for
* figuring out what's going on when you have a signal handling
- * problem.. */
+ * problem. */
#define QSHOW_SIGNALS 0
+/* Enable low-level debugging output, if not zero. Defaults to enabled
+ * if QSHOW_SIGNALS, disabled otherwise. Change it to 1 if you want
+ * low-level debugging output but not the whole signal mess. */
+#define QSHOW QSHOW_SIGNALS
+
+#if QSHOW
+
+#if QSHOW_SIGNAL_SAFE == 1 && !defined(LISP_FEATURE_WIN32)
+
+#include <signal.h>
+extern sigset_t blockable_sigset;
+
+#define QSHOW_BLOCK \
+ sigset_t oldset; \
+ thread_sigmask(SIG_BLOCK, &blockable_sigset, &oldset);
+#define QSHOW_UNBLOCK thread_sigmask(SIG_SETMASK,&oldset,0);
+#else
+#define QSHOW_BLOCK
+#define QSHOW_UNBLOCK
+#endif
+
+#ifdef LISP_FEATURE_SB_THREAD
+#define QSHOW_PREFIX fprintf(stderr, "%lu ", pthread_self());
+#else
+#define QSHOW_PREFIX
+#endif
+
+#define FSHOW(args) \
+ do { \
+ QSHOW_BLOCK \
+ QSHOW_PREFIX \
+ fprintf args; \
+ QSHOW_UNBLOCK \
+ } while (0)
+#define SHOW(string) FSHOW((stderr, "/%s\n", string))
+
+#else
+
+#define FSHOW(args)
+#define SHOW(string)
+
+#endif
+
+#if QSHOW_SIGNALS
+#define FSHOW_SIGNAL FSHOW
+#else
+#define FSHOW_SIGNAL(args)
+#endif
/* KLUDGE: These are in theory machine-dependent and OS-dependent, but
* in practice the "foo int" definitions work for all the machines
#endif
static inline int
-lowtag_of(lispobj obj) {
+lowtag_of(lispobj obj)
+{
return obj & LOWTAG_MASK;
}
static inline int
-widetag_of(lispobj obj) {
+widetag_of(lispobj obj)
+{
return obj & WIDETAG_MASK;
}
static inline int
is_lisp_pointer(lispobj obj)
{
+#if N_WORD_BITS == 64
+ return (obj & 3) == 3;
+#else
return obj & 1;
+#endif
+}
+
+#include "fixnump.h"
+
+/* Is the Lisp object obj something with immediate nature (e.g. a
+ * fixnum or character or unbound marker)? */
+static inline int
+is_lisp_immediate(lispobj obj)
+{
+ return (fixnump(obj)
+ || (widetag_of(obj) == CHARACTER_WIDETAG)
+#if N_WORD_BITS == 64
+ || (widetag_of(obj) == SINGLE_FLOAT_WIDETAG)
+#endif
+ || (widetag_of(obj) == UNBOUND_MARKER_WIDETAG));
}
/* Convert from a lispobj with type bits to a native (ordinary
{
return (lispobj *) ((pointer_sized_uint_t) (obj & ~LOWTAG_MASK));
}
+
/* inverse operation: create a suitably tagged lispobj from a native
- * pointer or integer. Needs to be a macro due to the tedious C type
- * system */
-#define make_lispobj(o,low_tag) ((lispobj)(LOW_WORD(o)|low_tag))
+ * pointer or integer.*/
+static inline lispobj
+make_lispobj(void *o, int low_tag)
+{
+ return LOW_WORD(o) | low_tag;
+}
-/* FIXME: There seems to be no reason that make_fixnum and fixnum_value
- * can't be implemented as (possibly inline) functions. */
-#define make_fixnum(n) ((lispobj)((n)<<N_FIXNUM_TAG_BITS))
-#define fixnum_value(n) (((long)n)>>N_FIXNUM_TAG_BITS)
+static inline lispobj
+make_fixnum(long n)
+{
+ return n << N_FIXNUM_TAG_BITS;
+}
-/* Too bad ANSI C doesn't define "bool" as C++ does.. */
+static inline long
+fixnum_value(lispobj n)
+{
+ return n >> N_FIXNUM_TAG_BITS;
+}
+
+#if defined(LISP_FEATURE_WIN32)
+/* KLUDGE: Avoid double definition of boolean by rpcndr.h included via
+ * shlobj.h.
+ *
+ * FIXME: We should probably arrange to use the rpcndr.h boolean on Windows,
+ * or get rid of our own boolean type. If the boolean type is only used in
+ * the runtime, and never passed to Lisp, then it doesn't matter which one
+ * we use.
+ */
+#define boolean rpcndr_boolean
+#include <shlobj.h>
+#undef boolean
+#endif
typedef int boolean;
-/* This only works for static symbols. */
-/* FIXME: should be called StaticSymbolFunction, right? */
-#define SymbolFunction(sym) \
- (((struct fdefn *)(native_pointer(SymbolValue(sym,0))))->fun)
+static inline boolean
+other_immediate_lowtag_p(lispobj header)
+{
+ /* These lowtags are spaced 4 apart throughout the lowtag space. */
+ return (lowtag_of(header) & 3) == OTHER_IMMEDIATE_0_LOWTAG;
+}
/* KLUDGE: As far as I can tell there's no ANSI C way of saying
* "this function never returns". This is the way that you do it
- * in GCC later than version 2.7 or so. If you are using some
- * compiler that doesn't understand this, you could could just
- * change it to "typedef void never_returns" and nothing would
- * break, though you might get a few more bytes of compiled code or
- * a few more compiler warnings. -- WHN 2000-10-21 */
-typedef volatile void never_returns;
+ * in GCC later than version 2.5 or so. */
+#if defined(__GNUC__)
+#if __GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 5)
+#define never_returns __attribute__ ((noreturn))
+#else
+#define never_returns
+#endif
+#else
+#define never_returns
+#endif
+
+extern void *successful_malloc (size_t size);
+extern char *copied_string (char *string);
#endif /* _SBCL_RUNTIME_H_ */
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