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Kernel: Use kernelputstr instead of dbgln when printing backtraces

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This will allow us to eventually switch dbgln in the kernel to an
allocation-free (although length-bounded) formatter.
This commit is contained in:
Idan Horowitz 2022-01-15 21:19:41 +02:00
parent 0142f33ddc
commit 309d71a66b
Notes: sideshowbarker 2024-07-17 20:49:05 +09:00 
Author: https://github.com/IdanHo
Commit: https://github.com/SerenityOS/serenity/commit/309d71a66b6
Pull-request: https://github.com/SerenityOS/serenity/pull/11932
Reviewed-by: https://github.com/alimpfard
Reviewed-by: https://github.com/creator1creeper1
2 changed files with 18 additions and 4 deletions
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11
Kernel/Scheduler.cpp
View File

@ -18,6 +18,7 @@
#include <Kernel/Scheduler.h>
#include <Kernel/Sections.h>
#include <Kernel/Time/TimeManagement.h>
#include <Kernel/kstdio.h>
// Remove this once SMP is stable and can be enabled by default
#define SCHEDULE_ON_ALL_PROCESSORS 0
@ -595,8 +596,14 @@ void dump_thread_list(bool with_stack_traces)
thread.times_scheduled());
break;
}
if (with_stack_traces)
dbgln("{}", thread.backtrace());
if (with_stack_traces) {
auto trace_or_error = thread.backtrace();
if (!trace_or_error.is_error()) {
auto trace = trace_or_error.release_value();
dbgln("Backtrace:");
kernelputstr(trace->characters(), trace->length());
}
}
return IterationDecision::Continue;
});
}

11
Kernel/Thread.cpp
View File

@ -27,6 +27,7 @@
#include <Kernel/Thread.h>
#include <Kernel/ThreadTracer.h>
#include <Kernel/TimerQueue.h>
#include <Kernel/kstdio.h>
#include <LibC/signal_numbers.h>
namespace Kernel {
@ -501,8 +502,14 @@ void Thread::finalize()
m_join_blocker_set.thread_finalizing();
}
if (m_dump_backtrace_on_finalization)
dbgln("{}", backtrace());
if (m_dump_backtrace_on_finalization) {
auto trace_or_error = backtrace();
if (!trace_or_error.is_error()) {
auto trace = trace_or_error.release_value();
dbgln("Backtrace:");
kernelputstr(trace->characters(), trace->length());
}
}
drop_thread_count(false);
}