*
* Note: In CMU CL, this was 4096, but there was no explanation given,
* and it's hard to see why we'd need that many nested interrupts, so
- * I've scaled it back to see what happens. -- WHN 20000730 */
-#define MAX_INTERRUPTS 256
+ * I've scaled it back (to 256) to see what happens. -- WHN 20000730
-extern os_context_t *lisp_interrupt_contexts[MAX_INTERRUPTS];
+ * Nothing happened, so let's creep it back a bit further -- dan 20030411 */
+#define MAX_INTERRUPTS 32
union interrupt_handler {
- lispobj lisp;
- void (*c)(int, siginfo_t*, void*);
+ lispobj lisp;
+ void (*c)(int, siginfo_t*, void*);
};
-extern void interrupt_init(void);
+struct interrupt_data {
+ void (*interrupt_low_level_handlers[NSIG]) (int, siginfo_t*, void*) ;
+ union interrupt_handler interrupt_handlers[NSIG];
+
+ /* signal information for pending signal. pending_signal=0 when there
+ * is no pending signal. */
+ void (*pending_handler) (int, siginfo_t*, void*) ;
+ int pending_signal ;
+ siginfo_t pending_info;
+ sigset_t pending_mask;
+};
+
+
+extern void interrupt_init();
extern void fake_foreign_function_call(os_context_t* context);
extern void undo_fake_foreign_function_call(os_context_t* context);
extern void interrupt_handle_now(int, siginfo_t*, void*);
extern void interrupt_handle_pending(os_context_t*);
extern void interrupt_internal_error(int, siginfo_t*, os_context_t*,
boolean continuable);
+extern boolean handle_control_stack_guard_triggered(os_context_t *,void *);
extern boolean interrupt_maybe_gc(int, siginfo_t*, void*);
-extern void interrupt_install_low_level_handler (int signal,
- void handler(int,
- siginfo_t*,
- void*));
+#ifdef LISP_FEATURE_SB_THREAD
+extern void handle_rt_signal(int, siginfo_t*, void*);
+extern void sig_stop_for_gc_handler(int, siginfo_t*, void*);
+#endif
+extern void undoably_install_low_level_interrupt_handler (int signal,
+ void
+ handler(int,
+ siginfo_t*,
+ void*));
extern unsigned long install_handler(int signal,
void handler(int, siginfo_t*, void*));
* signal(..) handlers have another, and attempting to represent them
* "cleanly" with union types is in fact a mess. */
#define ARE_SAME_HANDLER(x, y) ((void*)(x) == (void*)(y))
+
#endif
+