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kernel/hle_ipc: Convert std::shared_ptr IPC header instances to std::optional

Browse source 
There's no real need to use a shared lifetime here, since we don't
actually expose them to anything else. This is also kind of an
unnecessary use of the heap given the objects themselves are so small;
small enough, in fact that changing over to optionals actually reduces
the overall size of the HLERequestContext struct (818 bytes to 808
bytes).
This commit is contained in:
Lioncash 2019-03-07 16:44:28 -05:00
parent 69749a88cd
commit fbb82e61e3
4 changed files with 49 additions and 49 deletions
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2
src/core/hle/ipc_helpers.h
View file

@ -350,7 +350,7 @@ public:
template <class T>
std::shared_ptr<T> PopIpcInterface() {
ASSERT(context->Session()->IsDomain());
ASSERT(context->GetDomainMessageHeader()->input_object_count > 0);
ASSERT(context->GetDomainMessageHeader().input_object_count > 0);
return context->GetDomainRequestHandler<T>(Pop<u32>() - 1);
}
};

14
src/core/hle/kernel/hle_ipc.cpp
View file

@ -86,7 +86,7 @@ HLERequestContext::~HLERequestContext() = default;
void HLERequestContext::ParseCommandBuffer(const HandleTable& handle_table, u32_le* src_cmdbuf,
bool incoming) {
IPC::RequestParser rp(src_cmdbuf);
command_header = std::make_shared<IPC::CommandHeader>(rp.PopRaw<IPC::CommandHeader>());
command_header = rp.PopRaw<IPC::CommandHeader>();
if (command_header->type == IPC::CommandType::Close) {
// Close does not populate the rest of the IPC header
@ -95,8 +95,7 @@ void HLERequestContext::ParseCommandBuffer(const HandleTable& handle_table, u32_
// If handle descriptor is present, add size of it
if (command_header->enable_handle_descriptor) {
handle_descriptor_header =
std::make_shared<IPC::HandleDescriptorHeader>(rp.PopRaw<IPC::HandleDescriptorHeader>());
handle_descriptor_header = rp.PopRaw<IPC::HandleDescriptorHeader>();
if (handle_descriptor_header->send_current_pid) {
rp.Skip(2, false);
}
@ -140,16 +139,15 @@ void HLERequestContext::ParseCommandBuffer(const HandleTable& handle_table, u32_
// If this is an incoming message, only CommandType "Request" has a domain header
// All outgoing domain messages have the domain header, if only incoming has it
if (incoming || domain_message_header) {
domain_message_header =
std::make_shared<IPC::DomainMessageHeader>(rp.PopRaw<IPC::DomainMessageHeader>());
domain_message_header = rp.PopRaw<IPC::DomainMessageHeader>();
} else {
if (Session()->IsDomain())
if (Session()->IsDomain()) {
LOG_WARNING(IPC, "Domain request has no DomainMessageHeader!");
}
}
}
data_payload_header =
std::make_shared<IPC::DataPayloadHeader>(rp.PopRaw<IPC::DataPayloadHeader>());
data_payload_header = rp.PopRaw<IPC::DataPayloadHeader>();
data_payload_offset = rp.GetCurrentOffset();

15
src/core/hle/kernel/hle_ipc.h
View file

@ -6,6 +6,7 @@
#include <array>
#include <memory>
#include <optional>
#include <string>
#include <type_traits>
#include <vector>
@ -168,12 +169,12 @@ public:
return buffer_c_desciptors;
}
const IPC::DomainMessageHeader* GetDomainMessageHeader() const {
return domain_message_header.get();
const IPC::DomainMessageHeader& GetDomainMessageHeader() const {
return domain_message_header.value();
}
bool HasDomainMessageHeader() const {
return domain_message_header != nullptr;
return domain_message_header.has_value();
}
/// Helper function to read a buffer using the appropriate buffer descriptor
@ -272,10 +273,10 @@ private:
boost::container::small_vector<SharedPtr<Object>, 8> copy_objects;
boost::container::small_vector<std::shared_ptr<SessionRequestHandler>, 8> domain_objects;
std::shared_ptr<IPC::CommandHeader> command_header;
std::shared_ptr<IPC::HandleDescriptorHeader> handle_descriptor_header;
std::shared_ptr<IPC::DataPayloadHeader> data_payload_header;
std::shared_ptr<IPC::DomainMessageHeader> domain_message_header;
std::optional<IPC::CommandHeader> command_header;
std::optional<IPC::HandleDescriptorHeader> handle_descriptor_header;
std::optional<IPC::DataPayloadHeader> data_payload_header;
std::optional<IPC::DomainMessageHeader> domain_message_header;
std::vector<IPC::BufferDescriptorX> buffer_x_desciptors;
std::vector<IPC::BufferDescriptorABW> buffer_a_desciptors;
std::vector<IPC::BufferDescriptorABW> buffer_b_desciptors;

67
src/core/hle/kernel/server_session.cpp
View file

@ -92,41 +92,42 @@ std::size_t ServerSession::NumDomainRequestHandlers() const {
}
ResultCode ServerSession::HandleDomainSyncRequest(Kernel::HLERequestContext& context) {
auto* const domain_message_header = context.GetDomainMessageHeader();
if (domain_message_header) {
// Set domain handlers in HLE context, used for domain objects (IPC interfaces) as inputs
context.SetDomainRequestHandlers(domain_request_handlers);
// If there is a DomainMessageHeader, then this is CommandType "Request"
const u32 object_id{context.GetDomainMessageHeader()->object_id};
switch (domain_message_header->command) {
case IPC::DomainMessageHeader::CommandType::SendMessage:
if (object_id > domain_request_handlers.size()) {
LOG_CRITICAL(IPC,
"object_id {} is too big! This probably means a recent service call "
"to {} needed to return a new interface!",
object_id, name);
UNREACHABLE();
return RESULT_SUCCESS; // Ignore error if asserts are off
}
return domain_request_handlers[object_id - 1]->HandleSyncRequest(context);
case IPC::DomainMessageHeader::CommandType::CloseVirtualHandle: {
LOG_DEBUG(IPC, "CloseVirtualHandle, object_id=0x{:08X}", object_id);
domain_request_handlers[object_id - 1] = nullptr;
IPC::ResponseBuilder rb{context, 2};
rb.Push(RESULT_SUCCESS);
return RESULT_SUCCESS;
}
}
LOG_CRITICAL(IPC, "Unknown domain command={}",
static_cast<int>(domain_message_header->command.Value()));
ASSERT(false);
if (!context.HasDomainMessageHeader()) {
return RESULT_SUCCESS;
}
// Set domain handlers in HLE context, used for domain objects (IPC interfaces) as inputs
context.SetDomainRequestHandlers(domain_request_handlers);
// If there is a DomainMessageHeader, then this is CommandType "Request"
const auto& domain_message_header = context.GetDomainMessageHeader();
const u32 object_id{domain_message_header.object_id};
switch (domain_message_header.command) {
case IPC::DomainMessageHeader::CommandType::SendMessage:
if (object_id > domain_request_handlers.size()) {
LOG_CRITICAL(IPC,
"object_id {} is too big! This probably means a recent service call "
"to {} needed to return a new interface!",
object_id, name);
UNREACHABLE();
return RESULT_SUCCESS; // Ignore error if asserts are off
}
return domain_request_handlers[object_id - 1]->HandleSyncRequest(context);
case IPC::DomainMessageHeader::CommandType::CloseVirtualHandle: {
LOG_DEBUG(IPC, "CloseVirtualHandle, object_id=0x{:08X}", object_id);
domain_request_handlers[object_id - 1] = nullptr;
IPC::ResponseBuilder rb{context, 2};
rb.Push(RESULT_SUCCESS);
return RESULT_SUCCESS;
}
}
LOG_CRITICAL(IPC, "Unknown domain command={}",
static_cast<int>(domain_message_header.command.Value()));
ASSERT(false);
return RESULT_SUCCESS;
}