X-Git-Url: http://repo.macrolet.net/gitweb/?a=blobdiff_plain;f=src%2Fruntime%2Finterrupt.h;h=07b4a2d1e7c40ecd03156a7d6e734654002d7833;hb=0e3c4b4db102bd204a30402d7e5a0de44aea57ce;hp=579eeb6960b2e282e20ec2dece9e7c86b4440199;hpb=29a168e2bf7a6d509dea282cc5c781aba734d87c;p=sbcl.git diff --git a/src/runtime/interrupt.h b/src/runtime/interrupt.h index 579eeb6..07b4a2d 100644 --- a/src/runtime/interrupt.h +++ b/src/runtime/interrupt.h @@ -12,7 +12,7 @@ #if !defined(_INCLUDE_INTERRUPT_H_) #define _INCLUDE_INTERRUPT_H_ -#include +#include "runtime.h" #include /* @@ -24,15 +24,12 @@ * 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_deferrables_blocked_or_lose(void); -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) @@ -40,6 +37,41 @@ 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 @@ -69,7 +101,7 @@ sigcopyset(sigset_t *new, sigset_t *old) 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]; @@ -77,16 +109,34 @@ 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*); @@ -101,25 +151,18 @@ extern void do_pending_interrupt(void); #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 @@ -134,4 +177,15 @@ extern void lisp_memory_fault_error(os_context_t *context, 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