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DEMO: functional pipeline #11

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49 changes: 38 additions & 11 deletions compiler-rt/lib/rtsan/rtsan.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -21,6 +21,9 @@
#include "sanitizer_common/sanitizer_stackdepot.h"
#include "sanitizer_common/sanitizer_stacktrace.h"

#include <tuple>
#include <utility>

using namespace __rtsan;
using namespace __sanitizer;

Expand All @@ -46,10 +49,27 @@ static InitializationState GetInitializationState() {
atomic_load(&rtsan_initialized, memory_order_acquire));
}

static auto OnViolationAction(DiagnosticsInfo info) {
return [info]() {
IncrementTotalErrorCount();
template <class ...PairTypes>
constexpr static decltype(auto) BuildErrorAction(PairTypes&&... pairs) {
return [actions = std::tuple(std::forward<PairTypes>(pairs)...)]() {
std::apply([](auto&&... action_pair) {
((action_pair.second ? action_pair.first() : void()), ...);
}, actions);
};
}

template <typename Callable>
constexpr decltype(auto) OptionallyCall(Callable&& action, bool condition) {
return std::make_pair(std::forward<Callable>(action), condition);
}

template <typename Callable>
constexpr decltype(auto) AlwaysCall(Callable&& action) {
return OptionallyCall(std::forward<Callable>(action), true);
}

void StoreStackAndPrintIfNovel(const DiagnosticsInfo& info)
{
BufferedStackTrace stack;

// We use the unwind_on_fatal flag here because of precedent with other
Expand All @@ -74,10 +94,6 @@ static auto OnViolationAction(DiagnosticsInfo info) {

handle.inc_use_count_unsafe();
}

if (flags().halt_on_error)
Die();
};
}

extern "C" {
Expand Down Expand Up @@ -137,18 +153,29 @@ __rtsan_notify_intercepted_call(const char *func_name) {

__rtsan_ensure_initialized();
GET_CALLER_PC_BP;
DiagnosticsInfoType type = DiagnosticsInfoType::InterceptedCall;
ExpectNotRealtime(GetContextForThisThread(),
OnViolationAction({DiagnosticsInfoType::InterceptedCall,
func_name, pc, bp}));
BuildErrorAction(
AlwaysCall(IncrementTotalErrorCount),
AlwaysCall([=]() {StoreStackAndPrintIfNovel({type, func_name, pc, bp});}),
OptionallyCall(Die, flags().halt_on_error)
)
);
}

SANITIZER_INTERFACE_ATTRIBUTE void
__rtsan_notify_blocking_call(const char *func_name) {
__rtsan_ensure_initialized();
GET_CALLER_PC_BP;

DiagnosticsInfoType type = DiagnosticsInfoType::BlockingCall;
ExpectNotRealtime(GetContextForThisThread(),
OnViolationAction({DiagnosticsInfoType::BlockingCall,
func_name, pc, bp}));
BuildErrorAction(
AlwaysCall(IncrementTotalErrorCount),
AlwaysCall([=]() {StoreStackAndPrintIfNovel({type, func_name, pc, bp});}),
OptionallyCall(Die, flags().halt_on_error)
)
);
}

} // extern "C"