2 * This software is part of the SBCL system. See the README file for
5 * This software is derived from the CMU CL system, which was
6 * written at Carnegie Mellon University and released into the
7 * public domain. The software is in the public domain and is
8 * provided with absolutely no warranty. See the COPYING and CREDITS
9 * files for more information.
12 /* FIXME: Aren't symbols with underscore prefixes supposed to be
13 * reserved for system libraries? Perhaps rename stuff like this
14 * to names like INCLUDED_SBCL_RUNTIME_H. */
15 #ifndef _SBCL_RUNTIME_H_
16 #define _SBCL_RUNTIME_H_
18 #if defined(LISP_FEATURE_SB_THREAD)
19 #define thread_self pthread_self
20 #define thread_kill pthread_kill
21 #define thread_sigmask pthread_sigmask
22 #define thread_mutex_lock(l) pthread_mutex_lock(l)
23 #define thread_mutex_unlock(l) pthread_mutex_unlock(l)
25 #define thread_self getpid
26 #define thread_kill kill
27 #define thread_sigmask sigprocmask
28 #define thread_mutex_lock(l) 0
29 #define thread_mutex_unlock(l) 0
32 /* #define QSHOW */ /* Enable low-level debugging output? */
33 /* #define QSHOW_SAFE */ /* Enable blocking interrupts for each SHOW. */
40 extern sigset_t blockable_sigset;
44 thread_sigmask(SIG_BLOCK, &blockable_sigset, &oldset);
45 #define QSHOW_UNBLOCK thread_sigmask(SIG_SETMASK,&oldset,0);
51 #ifdef LISP_FEATURE_SB_THREAD
52 #define QSHOW_PREFIX fprintf(stderr, "%lu ", pthread_self());
64 #define SHOW(string) FSHOW((stderr, "/%s\n", string))
73 /* Enable extra-verbose low-level debugging output for signals? (You
74 * probably don't want this unless you're trying to debug very early
75 * cold boot on a new machine, or one where you've just messed up
78 * Note: It may be that doing this is fundamentally unsound, since it
79 * causes output from signal handlers, and the i/o libraries aren't
80 * necessarily reentrant. But it can still be very convenient for
81 * figuring out what's going on when you have a signal handling
83 #define QSHOW_SIGNALS 0
86 #define FSHOW_SIGNAL FSHOW
88 #define FSHOW_SIGNAL(args)
91 /* KLUDGE: These are in theory machine-dependent and OS-dependent, but
92 * in practice the "foo int" definitions work for all the machines
93 * that SBCL runs on as of 0.6.7. If we port to the Alpha or some
94 * other non-32-bit machine we'll probably need real machine-dependent
95 * and OS-dependent definitions again. */
96 /* even on alpha, int happens to be 4 bytes. long is longer. */
97 /* FIXME: these names really shouldn't reflect their length and this
98 is not quite right for some of the FFI stuff */
99 typedef unsigned long u64;
100 typedef signed long s64;
101 typedef unsigned int u32;
102 typedef signed int s32;
104 /* this is an integral type the same length as a machine pointer */
105 typedef unsigned long pointer_sized_uint_t ;
107 #include <sys/types.h>
109 #if defined(LISP_FEATURE_SB_THREAD)
111 typedef pthread_t os_thread_t;
113 typedef pid_t os_thread_t;
116 /* FIXME: we do things this way because of the alpha32 port. once
117 alpha64 has arrived, all this nastiness can go away */
118 #if 64 == N_WORD_BITS
119 #define LOW_WORD(c) ((pointer_sized_uint_t)c)
120 typedef unsigned long lispobj;
122 #define LOW_WORD(c) ((long)(c) & 0xFFFFFFFFL)
123 /* fake it on alpha32 */
124 typedef unsigned int lispobj;
128 lowtag_of(lispobj obj)
130 return obj & LOWTAG_MASK;
134 widetag_of(lispobj obj)
136 return obj & WIDETAG_MASK;
139 static inline unsigned long
140 HeaderValue(lispobj obj)
142 return obj >> N_WIDETAG_BITS;
145 static inline struct cons *
148 return (struct cons *)(obj - LIST_POINTER_LOWTAG);
151 static inline struct symbol *
154 return (struct symbol *)(obj - OTHER_POINTER_LOWTAG);
157 static inline struct fdefn *
160 return (struct fdefn *)(obj - OTHER_POINTER_LOWTAG);
163 /* Is the Lisp object obj something with pointer nature (as opposed to
164 * e.g. a fixnum or character or unbound marker)? */
166 is_lisp_pointer(lispobj obj)
173 /* Is the Lisp object obj something with immediate nature (e.g. a
174 * fixnum or character or unbound marker)? */
176 is_lisp_immediate(lispobj obj)
179 || (widetag_of(obj) == CHARACTER_WIDETAG)
180 #if N_WORD_BITS == 64
181 || (widetag_of(obj) == SINGLE_FLOAT_WIDETAG)
183 || (widetag_of(obj) == UNBOUND_MARKER_WIDETAG));
186 /* Convert from a lispobj with type bits to a native (ordinary
187 * C/assembly) pointer to the beginning of the object. */
188 static inline lispobj *
189 native_pointer(lispobj obj)
191 return (lispobj *) ((pointer_sized_uint_t) (obj & ~LOWTAG_MASK));
194 /* inverse operation: create a suitably tagged lispobj from a native
195 * pointer or integer.*/
196 static inline lispobj
197 make_lispobj(void *o, int low_tag)
199 return LOW_WORD(o) | low_tag;
202 static inline lispobj
205 return n << N_FIXNUM_TAG_BITS;
209 fixnum_value(lispobj n)
211 return n >> N_FIXNUM_TAG_BITS;
214 #if defined(LISP_FEATURE_WIN32)
215 /* KLUDGE: Avoid double definition of boolean by rpcndr.h included via
218 * FIXME: We should probably arrange to use the rpcndr.h boolean on Windows,
219 * or get rid of our own boolean type. If the boolean type is only used in
220 * the runtime, and never passed to Lisp, then it doesn't matter which one
223 #define boolean rpcndr_boolean
229 /* KLUDGE: As far as I can tell there's no ANSI C way of saying
230 * "this function never returns". This is the way that you do it
231 * in GCC later than version 2.5 or so. */
232 #if defined(__GNUC__)
233 #if __GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 5)
234 #define never_returns __attribute__ ((noreturn))
236 #define never_returns
239 #define never_returns
242 extern void *successful_malloc (size_t size);
243 extern char *copied_string (char *string);
245 #define RUNTIME_OPTIONS_MAGIC 0x31EBF355
246 /* 1 for magic, 1 for boolean, 2 for struct runtime_options fields */
247 #define RUNTIME_OPTIONS_WORDS (1 + 1 + 2)
249 struct runtime_options {
250 size_t dynamic_space_size;
251 size_t thread_control_stack_size;
254 #endif /* _SBCL_RUNTIME_H_ */