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base: catch uncaught exceptions of threads

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and show some message about. On sel4 sometimes exceptions are thrown and no
message is shown, it just seems to hang. With this patch at least you get
an idea that something bad happened.

Issue #2044
This commit is contained in:
Alexander Boettcher 2016-07-29 17:15:42 +02:00 committed by Christian Helmuth
parent 5a0bc07d30
commit 027e89f91a
1 changed files with 18 additions and 2 deletions
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20
repos/base/src/lib/base/thread_start.cc
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@ -13,7 +13,7 @@
/* Genode includes */
#include <base/thread.h>
#include <base/printf.h>
#include <base/log.h>
#include <base/sleep.h>
#include <base/env.h>
#include <cpu_thread/client.h>
@ -30,8 +30,24 @@ using namespace Genode;
void Thread::_thread_start()
{
Thread::myself()->_thread_bootstrap();
Thread::myself()->entry();
/* catch any exception at this point and try to print an error message */
try {
Thread::myself()->entry();
} catch (...) {
try {
raw("Thread '", Thread::myself()->name().string(),
"' died because of an uncaught exception");
} catch (...) {
/* die in a noisy way */
*(unsigned long *)0 = 0xdead;
}
throw;
}
Thread::myself()->_join_lock.unlock();
/* sleep silently */
Genode::sleep_forever();
}