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sm: implement accurate request deferral semantics

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Michael Scire 2020-12-31 00:29:06 -08:00 • committed by SciresM
parent d42f2e4d1b
commit f768e3c8f9
7 changed files with 196 additions and 75 deletions
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31
stratosphere/sm/source/sm_main.cpp
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@ -18,6 +18,7 @@
#include "sm_manager_service.hpp"
#include "sm_debug_monitor_service.hpp"
#include "impl/sm_service_manager.hpp"
#include "impl/sm_wait_list.hpp"
extern "C" {
extern u32 __start__;
@ -86,6 +87,10 @@ namespace {
constexpr size_t NumServers = 3;
sf::hipc::ServerManager<NumServers> g_server_manager;
ams::Result ResumeImpl(os::WaitableHolderType *session_holder) {
return g_server_manager.Process(session_holder);
}
}
int main(int argc, char **argv)
@ -94,13 +99,10 @@ int main(int argc, char **argv)
os::SetThreadNamePointer(os::GetCurrentThread(), AMS_GET_SYSTEM_THREAD_NAME(sm, Main));
AMS_ASSERT(os::GetThreadPriority(os::GetCurrentThread()) == AMS_GET_SYSTEM_THREAD_PRIORITY(sm, Main));
/* NOTE: These handles are manually managed, but we don't save references to them to close on exit. */
/* This is fine, because if SM crashes we have much bigger issues. */
/* Create sm:, (and thus allow things to register to it). */
{
Handle sm_h;
R_ABORT_UNLESS(svcManageNamedPort(&sm_h, "sm:", 0x40));
R_ABORT_UNLESS(svc::ManageNamedPort(&sm_h, "sm:", 0x40));
g_server_manager.RegisterServer<sm::impl::IUserInterface, sm::UserService>(sm_h);
}
@ -122,8 +124,23 @@ int main(int argc, char **argv)
/*================================*/
/* Loop forever, servicing our services. */
g_server_manager.LoopProcess();
while (true) {
/* Get the next signaled holder. */
auto *holder = g_server_manager.WaitSignaled();
AMS_ABORT_UNLESS(holder != nullptr);
/* Cleanup. */
return 0;
/* Process the holder. */
R_TRY_CATCH(g_server_manager.Process(holder)) {
R_CATCH(sf::ResultRequestDeferred) {
sm::impl::ProcessRegisterRetry(holder);
continue;
}
} R_END_TRY_CATCH_WITH_ABORT_UNLESS;
/* Test to see if anything can be undeferred. */
sm::impl::TestAndResume(ResumeImpl);
}
/* This can never be reached. */
AMS_ASSUME(false);
}