Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
02110-1301, USA.
- $Id: signal.c 8282 2007-08-09 12:18:47Z twisti $
-
*/
#include <assert.h>
#include <errno.h>
#include <signal.h>
+#include <stdint.h>
#include <stdlib.h>
#if defined(__DARWIN__)
#include "mm/memory.h"
+#include "native/llni.h"
+
#if defined(ENABLE_THREADS)
# include "threads/threads-common.h"
#else
# include "threads/none/threads.h"
#endif
+#include "toolbox/logging.h"
+
#include "vm/exceptions.h"
#include "vm/signallocal.h"
#include "vm/vm.h"
+#include "vm/jit/codegen-common.h"
+#include "vm/jit/disass.h"
+#include "vm/jit/patcher-common.h"
+
#include "vmcore/options.h"
#if defined(ENABLE_STATISTICS)
if (sigemptyset(&mask) != 0)
vm_abort("signal_init: sigemptyset failed: %s", strerror(errno));
+#if !defined(WITH_CLASSPATH_SUN)
+ /* Let OpenJDK handle SIGINT itself. */
+
if (sigaddset(&mask, SIGINT) != 0)
vm_abort("signal_init: sigaddset failed: %s", strerror(errno));
+#endif
#if !defined(__FREEBSD__)
if (sigaddset(&mask, SIGQUIT) != 0)
# endif
/* SIGSEGV handler */
- signal_register_signal(SIGSEGV, (void *) md_signal_handler_sigsegv,
+ signal_register_signal(SIGSEGV, (functionptr) md_signal_handler_sigsegv,
SA_NODEFER | SA_SIGINFO);
# if defined(SIGBUS)
- signal_register_signal(SIGBUS, (void *) md_signal_handler_sigsegv,
+ signal_register_signal(SIGBUS, (functionptr) md_signal_handler_sigsegv,
SA_NODEFER | SA_SIGINFO);
# endif
# if SUPPORT_HARDWARE_DIVIDE_BY_ZERO
/* SIGFPE handler */
- signal_register_signal(SIGFPE, (void *) md_signal_handler_sigfpe,
+ signal_register_signal(SIGFPE, (functionptr) md_signal_handler_sigfpe,
SA_NODEFER | SA_SIGINFO);
# endif
-# if defined(__ARM__) || defined(__S390__)
+# if defined(__ARM__) || defined(__I386__) || defined(__S390__) || defined(__X86_64__)
/* XXX use better defines for that (in arch.h) */
/* SIGILL handler */
- signal_register_signal(SIGILL, (void *) md_signal_handler_sigill,
+ signal_register_signal(SIGILL, (functionptr) md_signal_handler_sigill,
SA_NODEFER | SA_SIGINFO);
# endif
/* XXX use better defines for that (in arch.h) */
/* SIGTRAP handler */
- signal_register_signal(SIGTRAP, (void *) md_signal_handler_sigtrap,
+ signal_register_signal(SIGTRAP, (functionptr) md_signal_handler_sigtrap,
SA_NODEFER | SA_SIGINFO);
# endif
# if defined(ENABLE_INTRP)
#if defined(ENABLE_THREADS)
/* SIGHUP handler for threads_thread_interrupt */
- signal_register_signal(SIGHUP, (void *) signal_handler_sighup, 0);
+ signal_register_signal(SIGHUP, (functionptr) signal_handler_sighup, 0);
+#endif
+
+#if defined(ENABLE_THREADS) && defined(ENABLE_GC_CACAO)
+ /* SIGUSR1 handler for the exact GC to suspend threads */
+
+ signal_register_signal(SIGUSR1, (functionptr) md_signal_handler_sigusr1,
+ SA_SIGINFO);
#endif
#if defined(ENABLE_THREADS) && defined(ENABLE_PROFILING)
/* SIGUSR2 handler for profiling sampling */
- signal_register_signal(SIGUSR2, (void *) md_signal_handler_sigusr2,
+ signal_register_signal(SIGUSR2, (functionptr) md_signal_handler_sigusr2,
SA_SIGINFO);
#endif
*******************************************************************************/
-void signal_register_signal(int signum, void *handler, int flags)
+void signal_register_signal(int signum, functionptr handler, int flags)
{
struct sigaction act;
+
void (*function)(int, siginfo_t *, void *);
function = (void (*)(int, siginfo_t *, void *)) handler;
}
+/* signal_handle ***************************************************************
+
+ Handles the signal caught by a signal handler and calls the correct
+ function.
+
+*******************************************************************************/
+
+void *signal_handle(int type, intptr_t val,
+ void *pv, void *sp, void *ra, void *xpc, void *context)
+{
+ stackframeinfo_t sfi;
+ int32_t index;
+ java_handle_t *o;
+ methodinfo *m;
+ java_handle_t *p;
+
+ /* wrap the value into a handle if it is a reference */
+ /* BEFORE: creating stackframeinfo */
+
+ switch (type) {
+ case EXCEPTION_HARDWARE_CLASSCAST:
+ o = LLNI_WRAP((java_object_t *) val);
+ break;
+
+ case EXCEPTION_HARDWARE_COMPILER:
+ /* In this case the passed PV points to the compiler stub. We
+ get the methodinfo pointer here and set PV to NULL so
+ stacktrace_stackframeinfo_add determines the PV for the
+ parent Java method. */
+
+ m = code_get_methodinfo_for_pv(pv);
+ pv = NULL;
+ break;
+
+ default:
+ /* do nothing */
+ break;
+ }
+
+ /* Fill and add a stackframeinfo. */
+
+ stacktrace_stackframeinfo_add(&sfi, pv, sp, ra, xpc);
+
+ switch (type) {
+ case EXCEPTION_HARDWARE_NULLPOINTER:
+ p = exceptions_new_nullpointerexception();
+ break;
+
+ case EXCEPTION_HARDWARE_ARITHMETIC:
+ p = exceptions_new_arithmeticexception();
+ break;
+
+ case EXCEPTION_HARDWARE_ARRAYINDEXOUTOFBOUNDS:
+ index = (s4) val;
+ p = exceptions_new_arrayindexoutofboundsexception(index);
+ break;
+
+ case EXCEPTION_HARDWARE_ARRAYSTORE:
+ p = exceptions_new_arraystoreexception();
+ break;
+
+ case EXCEPTION_HARDWARE_CLASSCAST:
+ p = exceptions_new_classcastexception(o);
+ break;
+
+ case EXCEPTION_HARDWARE_EXCEPTION:
+ p = exceptions_fillinstacktrace();
+ break;
+
+ case EXCEPTION_HARDWARE_PATCHER:
+#if defined(ENABLE_REPLACEMENT)
+ if (replace_me_wrapper(xpc, context)) {
+ p = NULL;
+ break;
+ }
+#endif
+ p = patcher_handler(xpc);
+ break;
+
+ case EXCEPTION_HARDWARE_COMPILER:
+ p = jit_compile_handle(m, sfi.pv, ra, (void *) val);
+ break;
+
+ default:
+ /* Let's try to get a backtrace. */
+
+ codegen_get_pv_from_pc(xpc);
+
+ /* If that does not work, print more debug info. */
+
+ log_println("signal_handle: unknown hardware exception type %d", type);
+
+#if SIZEOF_VOID_P == 8
+ log_println("PC=0x%016lx", xpc);
+#else
+ log_println("PC=0x%08x", xpc);
+#endif
+
+#if defined(ENABLE_DISASSEMBLER)
+ log_println("machine instruction at PC:");
+ disassinstr(xpc);
+#endif
+
+ vm_abort("Exiting...");
+
+ /* keep compiler happy */
+
+ p = NULL;
+ }
+
+ /* Remove stackframeinfo. */
+
+ stacktrace_stackframeinfo_remove(&sfi);
+
+ /* unwrap and return the exception object */
+ /* AFTER: removing stackframeinfo */
+
+ if (type == EXCEPTION_HARDWARE_COMPILER)
+ return p;
+ else
+ return LLNI_UNWRAP(p);
+}
+
+
/* signal_thread ************************************************************
This thread sets the signal mask to catch the user input signals
if (sigemptyset(&mask) != 0)
vm_abort("signal_thread: sigemptyset failed: %s", strerror(errno));
+#if !defined(WITH_CLASSPATH_SUN)
+ /* Let OpenJDK handle SIGINT itself. */
+
if (sigaddset(&mask, SIGINT) != 0)
vm_abort("signal_thread: sigaddset failed: %s", strerror(errno));
+#endif
#if !defined(__FREEBSD__)
if (sigaddset(&mask, SIGQUIT) != 0)
vm_abort("signal_thread: sigaddset failed: %s", strerror(errno));
#endif
- while (true) {
+ for (;;) {
/* just wait for a signal */
+#if defined(ENABLE_THREADS)
+ threads_thread_state_waiting(t);
+#endif
+
/* XXX We don't check for an error here, although the man-page
states sigwait does not return an error (which is wrong!),
but it seems to make problems with Boehm-GC. We should
revisit this code with our new exact-GC. */
-#if defined(ENABLE_THREADS)
- threads_thread_state_waiting(t);
-#endif
-
/* if (sigwait(&mask, &sig) != 0) */
/* vm_abort("signal_thread: sigwait failed: %s", strerror(errno)); */
(void) sigwait(&mask, &sig);
threads_thread_state_runnable(t);
#endif
- switch (sig) {
- case SIGINT:
- /* exit the vm properly */
+ /* Handle the signal. */
- vm_exit(0);
- break;
+ signal_thread_handler(sig);
+ }
+}
+
+
+/* signal_thread_handler *******************************************************
+
+ Handles the signals caught in the signal handler thread. Also used
+ from sun.misc.Signal with OpenJDK.
- case SIGQUIT:
- /* print a thread dump */
+*******************************************************************************/
+
+void signal_thread_handler(int sig)
+{
+ switch (sig) {
+ case SIGINT:
+ /* exit the vm properly */
+
+ vm_exit(0);
+ break;
+
+ case SIGQUIT:
+ /* print a thread dump */
#if defined(ENABLE_THREADS)
- threads_dump();
+ threads_dump();
#endif
#if defined(ENABLE_STATISTICS)
- if (opt_stat)
- statistics_print_memory_usage();
+ if (opt_stat)
+ statistics_print_memory_usage();
#endif
- break;
- }
+ break;
}
-
- /* this should not happen */
-
- vm_abort("signal_thread: this thread should not exit!");
}
projects / cacao.git / blobdiff