hotspot Udiff src/os/linux/vm/os_linux.cpp (original) (raw)

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@@ -4890,11 +4890,11 @@

void PcFetcher::do_task(const os::SuspendedThreadTaskContext& context) { Thread* thread = context.thread(); OSThread* osthread = thread->osthread(); if (osthread->ucontext() != NULL) {

• _epc = os::Linux::ucontext_get_pc((ucontext_t *) context.ucontext());

• _epc = os::Posix::ucontext_get_pc((ucontext_t *) context.ucontext());

} else { // NULL context is unexpected, double-check this is the VMThread guarantee(thread->is_VM_thread(), "can only be called for VMThread"); } }

@@ -5997,10 +5997,35 @@ }

return strlen(buffer); }

+int os::Posix::unblock_signals(const sigset_t *set) {

• return pthread_sigmask(SIG_UNBLOCK, set, NULL); +}
• +void os::formatDebugMessage(char* buf, int buflen) {
• jio_snprintf(buf, buflen,

•           "\n\n"

•           "Do you want to debug the problem?\n\n"

•           "To debug, run 'gdb /proc/%d/exe %d'; then switch to thread " UINTX_FORMAT " (" INTPTR_FORMAT ")\n"

•           "Enter 'yes' to launch gdb automatically (PATH must include gdb)\n"

•           "Otherwise, press RETURN to abort...",

•           os::current_process_id(), os::current_process_id(),

•           os::current_thread_id(), os::current_thread_id());

+} + +void os::startDebugging() {

• char buf[80];

• jio_snprintf(buf, 80, "gdb /proc/%d/exe %d",

•               os::current_process_id(), os::current_process_id());

• os::fork_and_exec(buf); +}

• /////////////// Unit tests ///////////////

  #ifndef PRODUCT

  #define test_log(...) \

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