16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
24
25 #include "precompiled.hpp"
26 #include "runtime/arguments.hpp"
27 #include "runtime/os.hpp"
28 #include "runtime/thread.hpp"
29 #include "utilities/vmError.hpp"
30
31 #include <sys/types.h>
32 #include <sys/wait.h>
33 #include <thread.h>
34 #include <signal.h>
35
36 void VMError::show_message_box(char *buf, int buflen) {
37 bool yes;
38 do {
39 error_string(buf, buflen);
40 int len = (int)strlen(buf);
41 char *p = &buf[len];
42
43 jio_snprintf(p, buflen - len,
44 "\n\n"
45 "Do you want to debug the problem?\n\n"
46 "To debug, run 'dbx - %d'; then switch to thread " INTX_FORMAT "\n"
47 "Enter 'yes' to launch dbx automatically (PATH must include dbx)\n"
48 "Otherwise, press RETURN to abort...",
49 os::current_process_id(), os::current_thread_id());
50
51 yes = os::message_box("Unexpected Error", buf);
52
53 if (yes) {
54 // yes, user asked VM to launch debugger
55 jio_snprintf(buf, buflen, "dbx - %d", os::current_process_id());
56
57 os::fork_and_exec(buf);
58 yes = false;
59 }
100
101 static void crash_handler(int sig, siginfo_t* info, void* ucVoid) {
102 // unmask current signal
103 sigset_t newset;
104 sigemptyset(&newset);
105 sigaddset(&newset, sig);
106 // also unmask other synchronous signals
107 for (int i = 0; i < NUM_SIGNALS; i++) {
108 sigaddset(&newset, SIGNALS[i]);
109 }
110 thr_sigsetmask(SIG_UNBLOCK, &newset, NULL);
111
112 // support safefetch faults in error handling
113 ucontext_t* const uc = (ucontext_t*) ucVoid;
114 address const pc = uc ? os::Solaris::ucontext_get_pc(uc) : NULL;
115 if (uc && pc && StubRoutines::is_safefetch_fault(pc)) {
116 os::Solaris::ucontext_set_pc(uc, StubRoutines::continuation_for_safefetch_fault(pc));
117 return;
118 }
119
120 VMError err(NULL, sig, pc, info, ucVoid);
121 err.report_and_die();
122 }
123
124 void VMError::reset_signal_handlers() {
125 // install signal handlers for all synchronous program error signals
126 sigset_t newset;
127 sigemptyset(&newset);
128
129 for (int i = 0; i < NUM_SIGNALS; i++) {
130 save_signal(i, SIGNALS[i]);
131 os::signal(SIGNALS[i], CAST_FROM_FN_PTR(void *, crash_handler));
132 sigaddset(&newset, SIGNALS[i]);
133 }
134 thr_sigsetmask(SIG_UNBLOCK, &newset, NULL);
135 }
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16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
24
25 #include "precompiled.hpp"
26 #include "runtime/arguments.hpp"
27 #include "runtime/os.hpp"
28 #include "runtime/thread.hpp"
29 #include "utilities/vmError.hpp"
30
31 #include <sys/types.h>
32 #include <sys/wait.h>
33 #include <thread.h>
34 #include <signal.h>
35
36 void VMError::show_message_box(char *buf, int buflen, int id, const char* message, const char* detail_fmt,
37 va_list detail_args, address pc, const char* filename, int lineno) {
38 bool yes;
39 do {
40 error_string(buf, buflen, id, message, detail_fmt, detail_args, pc, filename, lineno);
41 int len = (int)strlen(buf);
42 char *p = &buf[len];
43
44 jio_snprintf(p, buflen - len,
45 "\n\n"
46 "Do you want to debug the problem?\n\n"
47 "To debug, run 'dbx - %d'; then switch to thread " INTX_FORMAT "\n"
48 "Enter 'yes' to launch dbx automatically (PATH must include dbx)\n"
49 "Otherwise, press RETURN to abort...",
50 os::current_process_id(), os::current_thread_id());
51
52 yes = os::message_box("Unexpected Error", buf);
53
54 if (yes) {
55 // yes, user asked VM to launch debugger
56 jio_snprintf(buf, buflen, "dbx - %d", os::current_process_id());
57
58 os::fork_and_exec(buf);
59 yes = false;
60 }
101
102 static void crash_handler(int sig, siginfo_t* info, void* ucVoid) {
103 // unmask current signal
104 sigset_t newset;
105 sigemptyset(&newset);
106 sigaddset(&newset, sig);
107 // also unmask other synchronous signals
108 for (int i = 0; i < NUM_SIGNALS; i++) {
109 sigaddset(&newset, SIGNALS[i]);
110 }
111 thr_sigsetmask(SIG_UNBLOCK, &newset, NULL);
112
113 // support safefetch faults in error handling
114 ucontext_t* const uc = (ucontext_t*) ucVoid;
115 address const pc = uc ? os::Solaris::ucontext_get_pc(uc) : NULL;
116 if (uc && pc && StubRoutines::is_safefetch_fault(pc)) {
117 os::Solaris::ucontext_set_pc(uc, StubRoutines::continuation_for_safefetch_fault(pc));
118 return;
119 }
120
121 VMError::report_and_die(NULL, sig, pc, info, ucVoid);
122 }
123
124 void VMError::reset_signal_handlers() {
125 // install signal handlers for all synchronous program error signals
126 sigset_t newset;
127 sigemptyset(&newset);
128
129 for (int i = 0; i < NUM_SIGNALS; i++) {
130 save_signal(i, SIGNALS[i]);
131 os::signal(SIGNALS[i], CAST_FROM_FN_PTR(void *, crash_handler));
132 sigaddset(&newset, SIGNALS[i]);
133 }
134 thr_sigsetmask(SIG_UNBLOCK, &newset, NULL);
135 }
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