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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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17
src/core/hle/service/srv.cpp
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@ -2,8 +2,12 @@
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#include <tuple>
#include "common/common_types.h"
#include "common/logging/log.h"
#include "core/hle/service/srv.h"
#include "core/hle/kernel/client_session.h"
#include "core/hle/kernel/event.h"
#include "core/hle/service/srv.h"
@ -81,7 +85,18 @@ static void GetServiceHandle(Service::Interface* self) {
auto it = Service::g_srv_services.find(port_name);
if (it != Service::g_srv_services.end()) {
cmd_buff[3] = Kernel::g_handle_table.Create(it->second).MoveFrom();
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
cmd_buff[3] = Kernel::g_handle_table.Create(client_session).MoveFrom();
LOG_TRACE(Service_SRV, "called port=%s, handle=0x%08X", port_name.c_str(), cmd_buff[3]);
} else {
LOG_ERROR(Service_SRV, "(UNIMPLEMENTED) called port=%s", port_name.c_str());