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Kernel: Dump backtrace to debugger for DefaultSignalAction::DumpCore.

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This makes assertion failures generate backtraces again. Sorry to everyone
who suffered from the lack of backtraces lately. :^)

We share code with the /proc/PID/stack implementation. You can now get the
current backtrace for a Thread via Thread::backtrace(), and all the traces
for a Process via Process::backtrace().
This commit is contained in:
Andreas Kling 2019-07-25 21:02:19 +02:00
parent a599317624
commit 4316fa8123
5 changed files with 62 additions and 32 deletions
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8
Kernel/Thread.h
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@ -16,6 +16,7 @@
class Alarm;
class FileDescription;
class Process;
class ProcessInspectionHandle;
class Region;
enum class ShouldUnblockThread {
@ -49,6 +50,8 @@ public:
Process& process() { return m_process; }
const Process& process() const { return m_process; }
String backtrace(ProcessInspectionHandle&) const;
void finalize();
enum State : u8 {
@ -205,6 +208,7 @@ public:
u16 selector() const { return m_far_ptr.selector; }
TSS32& tss() { return m_tss; }
const TSS32& tss() const { return m_tss; }
State state() const { return m_state; }
const char* state_string() const;
u32 ticks() const { return m_ticks; }
@ -371,3 +375,7 @@ inline IterationDecision Thread::for_each_in_state(State state, Callback callbac
return Scheduler::for_each_nonrunnable(new_callback);
}
inline const LogStream& operator<<(const LogStream& stream, const Thread& value)
{
return stream << "Thread{" << &value << "}(" << value.pid() << ":" << value.tid() << ")";
}