diff options
Diffstat (limited to 'vespalib/src/tests/signalhandler/my_shared_library.cpp')
| -rw-r--r-- | vespalib/src/tests/signalhandler/my_shared_library.cpp | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/vespalib/src/tests/signalhandler/my_shared_library.cpp b/vespalib/src/tests/signalhandler/my_shared_library.cpp new file mode 100644 index 00000000000..4b7593d863c --- /dev/null +++ b/vespalib/src/tests/signalhandler/my_shared_library.cpp @@ -0,0 +1,20 @@ +// Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root. + +#include "my_shared_library.h" +#include <vespa/vespalib/util/signalhandler.h> + +// This tiny library exists solely as a way to ensure we get visible function names in our backtrace, +// as that is not necessarily the case for statically linked functions. + +// Could have used a single std::barrier<no op functor> here, but when using explicit +// phase latches it sort of feels like the semantics are more immediately obvious. +void my_cool_function(std::latch& arrival_latch, std::latch& departure_latch) { + arrival_latch.arrive_and_wait(); + // Twiddle thumbs in departure latch until main test thread has dumped our stack + departure_latch.arrive_and_wait(); + asm(""); // Dear GCC; really, really don't inline this function. It's clobberin' time! +} + +vespalib::string my_totally_tubular_and_groovy_function() { + return vespalib::SignalHandler::get_cross_thread_stack_trace(pthread_self()); +} |