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#include "binaryninjaapi.h"
using namespace BinaryNinja;
using namespace std;
struct MainThreadActionContext
{
function<void()> action;
exception_ptr exception;
};
MainThreadAction::MainThreadAction(BNMainThreadAction* action)
{
m_object = action;
}
void MainThreadAction::Execute()
{
BNExecuteMainThreadAction(m_object);
}
bool MainThreadAction::IsDone() const
{
return BNIsMainThreadActionDone(m_object);
}
void MainThreadAction::Wait()
{
BNWaitForMainThreadAction(m_object);
}
static void AddMainThreadAction(void* ctxt, BNMainThreadAction* action)
{
MainThreadActionHandler* handler = (MainThreadActionHandler*)ctxt;
handler->AddMainThreadAction(new MainThreadAction(action));
}
void BinaryNinja::RegisterMainThread(MainThreadActionHandler* handler)
{
BNMainThreadCallbacks cb;
cb.context = handler;
cb.addAction = AddMainThreadAction;
BNRegisterMainThread(&cb);
}
static void ExecuteAction(void* ctxt)
{
MainThreadActionContext* action = (MainThreadActionContext*)ctxt;
// We can't throw across a thread and *certainly* not across the api boundary
// But how do we deal with exceptions thrown in main thread callbacks if the caller doesn't wait for them?
// Likely the only good solution is abort()
try
{
action->action();
}
catch (const std::exception& e)
{
LogErrorForException(e, "Exception in main thread handler: %s", e.what());
fprintf(stderr, "Exception in main thread handler: %s\n", e.what());
abort();
}
catch (...)
{
LogError("Exception in main thread handler: <unknown exception>");
fprintf(stderr, "Exception in main thread handler: <unknown exception>\n");
abort();
}
delete action;
}
Ref<MainThreadAction> BinaryNinja::ExecuteOnMainThread(const function<void()>& action)
{
MainThreadActionContext* ctxt = new MainThreadActionContext;
ctxt->action = action;
BNMainThreadAction* obj = BNExecuteOnMainThread(ctxt, ExecuteAction);
return obj ? new MainThreadAction(obj) : nullptr;
}
static void ExecuteActionLocal(void* ctxt)
{
MainThreadActionContext* action = (MainThreadActionContext*)ctxt;
try
{
action->action();
}
catch (...)
{
action->exception = current_exception();
}
}
void BinaryNinja::ExecuteOnMainThreadAndWait(const function<void()>& action)
{
MainThreadActionContext ctxt;
ctxt.action = action;
ctxt.exception = exception_ptr();
BNExecuteOnMainThreadAndWait(&ctxt, ExecuteActionLocal);
if (ctxt.exception)
{
rethrow_exception(ctxt.exception);
}
}
bool BinaryNinja::IsMainThread()
{
return BNIsMainThread();
}
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