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Kernel/IPC: Use Ports and Sessions as the fundamental building block of Inter Process Communication.

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All handles obtained via srv::GetServiceHandle or svcConnectToPort are references to ClientSessions.
Service modules will wait on the counterpart of those ClientSessions (Called ServerSessions) using svcReplyAndReceive or svcWaitSynchronization[1|N], and will be awoken when a SyncRequest is performed.

HLE Interfaces are now ClientPorts which override the HandleSyncRequest virtual member function to perform command handling immediately.
This commit is contained in:
Subv 2016-06-14 18:03:30 -05:00
parent 68c00ee771
commit 073653e858
16 changed files with 315 additions and 89 deletions
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18
src/core/hle/svc.cpp
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@ -13,6 +13,7 @@
#include "core/hle/function_wrappers.h"
#include "core/hle/kernel/address_arbiter.h"
#include "core/hle/kernel/client_port.h"
#include "core/hle/kernel/client_session.h"
#include "core/hle/kernel/event.h"
#include "core/hle/kernel/memory.h"
#include "core/hle/kernel/mutex.h"
@ -222,20 +223,31 @@ static ResultCode ConnectToPort(Handle* out_handle, const char* port_name) {
return ERR_NOT_FOUND;
}
CASCADE_RESULT(*out_handle, Kernel::g_handle_table.Create(it->second));
auto client_port = it->second;
// Create a new session pair
auto sessions = Kernel::ServerSession::CreateSessionPair(client_port, port_name);
auto client_session = std::get<Kernel::SharedPtr<Kernel::ClientSession>>(sessions);
auto server_session = std::get<Kernel::SharedPtr<Kernel::ServerSession>>(sessions);
// Add the server session to the port's queue
client_port->AddWaitingSession(server_session);
// Return the client session
CASCADE_RESULT(*out_handle, Kernel::g_handle_table.Create(client_session));
return RESULT_SUCCESS;
}
/// Synchronize to an OS service
static ResultCode SendSyncRequest(Handle handle) {
SharedPtr<Kernel::Session> session = Kernel::g_handle_table.Get<Kernel::Session>(handle);
SharedPtr<Kernel::ClientSession> session = Kernel::g_handle_table.Get<Kernel::ClientSession>(handle);
if (session == nullptr) {
return ERR_INVALID_HANDLE;
}
LOG_TRACE(Kernel_SVC, "called handle=0x%08X(%s)", handle, session->GetName().c_str());
return session->SyncRequest().Code();
return session->HandleSyncRequest();
}
/// Close a handle