/* FIXME: do not rely on NSIG being a multiple of 8 */
#define REAL_SIGSET_SIZE_BYTES ((NSIG/8))
+static inline void
+sigcopyset(sigset_t *new, sigset_t *old)
+{
+ memcpy(new, old, REAL_SIGSET_SIZE_BYTES);
+}
+
+extern void get_current_sigmask(sigset_t *sigset);
+
/* Set all deferrable signals into *s. */
extern void sigaddset_deferrable(sigset_t *s);
/* Set all blockable signals into *s. */
extern sigset_t blockable_sigset;
extern sigset_t gc_sigset;
-extern void block_deferrable_signals(void);
-extern void block_blockable_signals(void);
-extern void unblock_deferrable_signals(void);
-extern void unblock_gc_signals(void);
-extern void unblock_signals_in_context_and_maybe_warn(os_context_t *context);
+extern boolean deferrables_blocked_p(sigset_t *sigset);
+extern boolean blockables_blocked_p(sigset_t *sigset);
+extern boolean gc_signals_blocked_p(sigset_t *sigset);
-extern boolean deferrables_blocked_in_sigset_p(sigset_t *sigset);
-extern void check_deferrables_blocked_or_lose(void);
-extern void check_blockables_blocked_or_lose(void);
-extern void check_gc_signals_unblocked_or_lose(void);
-extern void check_gc_signals_unblocked_in_sigset_or_lose(sigset_t *sigset);
+extern void check_deferrables_blocked_or_lose(sigset_t *sigset);
+extern void check_blockables_blocked_or_lose(sigset_t *sigset);
+extern void check_gc_signals_blocked_or_lose(sigset_t *sigset);
-extern void maybe_save_gc_mask_and_block_deferrables(sigset_t *sigset);
+extern void check_deferrables_unblocked_or_lose(sigset_t *sigset);
+extern void check_blockables_unblocked_or_lose(sigset_t *sigset);
+extern void check_gc_signals_unblocked_or_lose(sigset_t *sigset);
-static inline void
-sigcopyset(sigset_t *new, sigset_t *old)
-{
- memcpy(new, old, REAL_SIGSET_SIZE_BYTES);
-}
+extern void block_deferrable_signals(sigset_t *where, sigset_t *old);
+extern void block_blockable_signals(sigset_t *where, sigset_t *old);
+extern void block_gc_signals(sigset_t *where, sigset_t *old);
+
+extern void unblock_deferrable_signals(sigset_t *where, sigset_t *old);
+extern void unblock_blockable_signals(sigset_t *where, sigset_t *old);
+extern void unblock_gc_signals(sigset_t *where, sigset_t *old);
+
+extern void maybe_save_gc_mask_and_block_deferrables(sigset_t *sigset);
/* maximum signal nesting depth
*
union interrupt_handler {
lispobj lisp;
- void (*c)(int, siginfo_t*, void*);
+ void (*c)(int, siginfo_t*, os_context_t*);
};
extern union interrupt_handler interrupt_handlers[NSIG];
struct interrupt_data {
/* signal information for pending signal. pending_signal=0 when there
* is no pending signal. */
- void (*pending_handler) (int, siginfo_t*, void*) ;
+ void (*pending_handler) (int, siginfo_t*, os_context_t*) ;
int pending_signal;
siginfo_t pending_info;
sigset_t pending_mask;
/* Was pending mask saved for gc request? True if GC_PENDING or
- * SIG_STOP_FOR_GC happened in a pseudo atomic with no GC_INHIBIT
- * NIL. Both deferrable interrupt handlers and gc are careful not
- * to clobber each other's pending_mask. */
+ * SIG_STOP_FOR_GC happened in a pseudo atomic with GC_INHIBIT NIL
+ * and with no pending handler. Both deferrable interrupt handlers
+ * and gc are careful not to clobber each other's pending_mask. */
boolean gc_blocked_deferrables;
+#ifdef LISP_FEATURE_PPC
+ /* On PPC when consing wants to turn to alloc(), it does so via a
+ * trap. When alloc() wants to save the sigmask it consults
+ * allocation_trap_context. It does not look up the most recent
+ * context, because alloc() can be called from other places
+ * too. */
+ os_context_t *allocation_trap_context;
+#endif
};
extern boolean interrupt_handler_pending_p(void);
#endif
#ifdef LISP_FEATURE_SB_THREAD
-extern void sig_stop_for_gc_handler(int, siginfo_t*, void*);
+extern void sig_stop_for_gc_handler(int, siginfo_t*, os_context_t*);
#endif
-typedef void (*interrupt_handler_t)(int, siginfo_t *, void *);
+typedef void (*interrupt_handler_t)(int, siginfo_t *, os_context_t *);
extern void undoably_install_low_level_interrupt_handler (
int signal,
interrupt_handler_t handler);
os_vm_address_t addr);
#endif
+#include "thread.h"
+
+extern void lower_thread_control_stack_guard_page(struct thread *th);
+extern void reset_thread_control_stack_guard_page(struct thread *th);
+
#endif