#if !defined(_INCLUDE_INTERRUPT_H_)
#define _INCLUDE_INTERRUPT_H_
-#include <signal.h>
+#include "runtime.h"
#include <string.h>
/*
* stack by the kernel, so copying a libc-sized sigset_t into it will
* overflow and cause other data on the stack to be corrupted */
/* FIXME: do not rely on NSIG being a multiple of 8 */
-#define REAL_SIGSET_SIZE_BYTES ((NSIG/8))
-extern sigset_t deferrable_sigset;
-extern sigset_t blockable_sigset;
-
-extern void check_blockables_blocked_or_lose(void);
-extern void check_gc_signals_unblocked_or_lose(void);
-extern void unblock_gc_signals(void);
+#ifdef LISP_FEATURE_WIN32
+# define REAL_SIGSET_SIZE_BYTES (4)
+#else
+# define REAL_SIGSET_SIZE_BYTES ((NSIG/8))
+#endif
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 void sigaddset_blockable(sigset_t *s);
+/* Set all gc signals into *s. */
+extern void sigaddset_gc(sigset_t *s);
+
+extern sigset_t deferrable_sigset;
+extern sigset_t blockable_sigset;
+extern sigset_t gc_sigset;
+
+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 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 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);
+
+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
*
* FIXME: In CMUCL this was 4096, and it was first scaled down to 256
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 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 GENCGC_IS_PRECISE
+ /* 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
};
+typedef lispobj (*call_into_lisp_lookalike)(
+ lispobj fun, lispobj *args, int nargs);
+extern boolean interrupt_handler_pending_p(void);
extern void interrupt_init(void);
extern void fake_foreign_function_call(os_context_t* context);
extern void undo_fake_foreign_function_call(os_context_t* context);
+extern void arrange_return_to_c_function(
+ os_context_t *, call_into_lisp_lookalike, lispobj);
extern void arrange_return_to_lisp_function(os_context_t *, lispobj);
extern void interrupt_handle_now(int, siginfo_t*, os_context_t*);
extern void interrupt_handle_pending(os_context_t*);
#endif
#ifdef LISP_FEATURE_SB_THREAD
-extern void interrupt_thread_handler(int, siginfo_t*, void*);
-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);
-extern unsigned long install_handler(int signal,
- interrupt_handler_t handler);
+extern uword_t install_handler(int signal,
+ interrupt_handler_t handler,
+ int synchronous);
extern union interrupt_handler interrupt_handlers[NSIG];
-/* Set all deferrable signals into *s. */
-extern void sigaddset_deferrable(sigset_t *s);
-/* Set all blockable signals into *s. */
-extern void sigaddset_blockable(sigset_t *s);
-
-extern void block_blockable_signals(void);
-
/* The void* casting here avoids having to mess with the various types
* of function argument lists possible for signal handlers:
* SA_SIGACTION handlers have one signature, and the default old-style
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);
+
+#if defined(LISP_FEATURE_SB_SAFEPOINT) && !defined(LISP_FEATURE_WIN32)
+# ifdef LISP_FEATURE_SB_THRUPTION
+void thruption_handler(int signal, siginfo_t *info, os_context_t *context);
+# endif
+#endif
+
#endif
projects / sbcl.git / blobdiff