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 <sys/syscall.h>
34 #include <unistd.h>
35 #include <signal.h>
36
37 void VMError::show_message_box(char *buf, int buflen) {
38 bool yes;
39 do {
40 error_string(buf, buflen);
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 'gdb /proc/%d/exe %d'; then switch to thread " UINTX_FORMAT " (" INTPTR_FORMAT ")\n"
48 "Enter 'yes' to launch gdb automatically (PATH must include gdb)\n"
49 "Otherwise, press RETURN to abort...",
50 os::current_process_id(), os::current_process_id(),
51 os::current_thread_id(), os::current_thread_id());
52
53 yes = os::message_box("Unexpected Error", buf);
54
55 if (yes) {
56 // yes, user asked VM to launch debugger
57 jio_snprintf(buf, buflen, "gdb /proc/%d/exe %d",
58 os::current_process_id(), os::current_process_id());
59
60 os::fork_and_exec(buf);
104 static void crash_handler(int sig, siginfo_t* info, void* ucVoid) {
105 // unmask current signal
106 sigset_t newset;
107 sigemptyset(&newset);
108 sigaddset(&newset, sig);
109 // also unmask other synchronous signals
110 for (int i = 0; i < NUM_SIGNALS; i++) {
111 sigaddset(&newset, SIGNALS[i]);
112 }
113 pthread_sigmask(SIG_UNBLOCK, &newset, NULL);
114
115 // support safefetch faults in error handling
116 ucontext_t* const uc = (ucontext_t*) ucVoid;
117 address const pc = uc ? os::Linux::ucontext_get_pc(uc) : NULL;
118
119 if (uc && pc && StubRoutines::is_safefetch_fault(pc)) {
120 os::Linux::ucontext_set_pc(uc, StubRoutines::continuation_for_safefetch_fault(pc));
121 return;
122 }
123
124 VMError err(NULL, sig, pc, info, ucVoid);
125 err.report_and_die();
126 }
127
128 void VMError::reset_signal_handlers() {
129 // install signal handlers for all synchronous program error signals
130 sigset_t newset;
131 sigemptyset(&newset);
132
133 for (int i = 0; i < NUM_SIGNALS; i++) {
134 save_signal(i, SIGNALS[i]);
135 os::signal(SIGNALS[i], CAST_FROM_FN_PTR(void *, crash_handler));
136 sigaddset(&newset, SIGNALS[i]);
137 }
138 pthread_sigmask(SIG_UNBLOCK, &newset, NULL);
139
140 }
|
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 <sys/syscall.h>
34 #include <unistd.h>
35 #include <signal.h>
36
37 void VMError::show_message_box(char *buf, int buflen, int id, const char* message, const char* detail_fmt,
38 va_list detail_args, address pc, const char* filename, int lineno) {
39 bool yes;
40 do {
41 error_string(buf, buflen, id, message, detail_fmt, detail_args, pc, filename, lineno);
42 int len = (int)strlen(buf);
43 char *p = &buf[len];
44
45 jio_snprintf(p, buflen - len,
46 "\n\n"
47 "Do you want to debug the problem?\n\n"
48 "To debug, run 'gdb /proc/%d/exe %d'; then switch to thread " UINTX_FORMAT " (" INTPTR_FORMAT ")\n"
49 "Enter 'yes' to launch gdb automatically (PATH must include gdb)\n"
50 "Otherwise, press RETURN to abort...",
51 os::current_process_id(), os::current_process_id(),
52 os::current_thread_id(), os::current_thread_id());
53
54 yes = os::message_box("Unexpected Error", buf);
55
56 if (yes) {
57 // yes, user asked VM to launch debugger
58 jio_snprintf(buf, buflen, "gdb /proc/%d/exe %d",
59 os::current_process_id(), os::current_process_id());
60
61 os::fork_and_exec(buf);
105 static void crash_handler(int sig, siginfo_t* info, void* ucVoid) {
106 // unmask current signal
107 sigset_t newset;
108 sigemptyset(&newset);
109 sigaddset(&newset, sig);
110 // also unmask other synchronous signals
111 for (int i = 0; i < NUM_SIGNALS; i++) {
112 sigaddset(&newset, SIGNALS[i]);
113 }
114 pthread_sigmask(SIG_UNBLOCK, &newset, NULL);
115
116 // support safefetch faults in error handling
117 ucontext_t* const uc = (ucontext_t*) ucVoid;
118 address const pc = uc ? os::Linux::ucontext_get_pc(uc) : NULL;
119
120 if (uc && pc && StubRoutines::is_safefetch_fault(pc)) {
121 os::Linux::ucontext_set_pc(uc, StubRoutines::continuation_for_safefetch_fault(pc));
122 return;
123 }
124
125 VMError::report_and_die(NULL, sig, pc, info, ucVoid);
126 }
127
128 void VMError::reset_signal_handlers() {
129 // install signal handlers for all synchronous program error signals
130 sigset_t newset;
131 sigemptyset(&newset);
132
133 for (int i = 0; i < NUM_SIGNALS; i++) {
134 save_signal(i, SIGNALS[i]);
135 os::signal(SIGNALS[i], CAST_FROM_FN_PTR(void *, crash_handler));
136 sigaddset(&newset, SIGNALS[i]);
137 }
138 pthread_sigmask(SIG_UNBLOCK, &newset, NULL);
139
140 }
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