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Merge pull request #250 from bunnei/buffer-dequeue-wait 

vi: TransactParcel DequeueBuffer should wait current thread
This commit is contained in:
bunnei 2018-03-18 22:25:09 -04:00 committed by GitHub
parent 2332a44b68 c1c92c30f9
commit 2dc3a56e96
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GPG Key ID: 4AEE18F83AFDEB23
10 changed files with 127 additions and 50 deletions
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49
src/core/hle/kernel/hle_ipc.cpp
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@ -7,6 +7,7 @@
#include "common/common_funcs.h"
#include "common/common_types.h"
#include "core/hle/ipc_helpers.h"
#include "core/hle/kernel/event.h"
#include "core/hle/kernel/handle_table.h"
#include "core/hle/kernel/hle_ipc.h"
#include "core/hle/kernel/kernel.h"
@ -26,6 +27,32 @@ void SessionRequestHandler::ClientDisconnected(SharedPtr<ServerSession> server_s
boost::range::remove_erase(connected_sessions, server_session);
}
SharedPtr<Event> HLERequestContext::SleepClientThread(SharedPtr<Thread> thread,
const std::string& reason, u64 timeout,
WakeupCallback&& callback) {
// Put the client thread to sleep until the wait event is signaled or the timeout expires.
thread->wakeup_callback =
[context = *this, callback](ThreadWakeupReason reason, SharedPtr<Thread> thread,
SharedPtr<WaitObject> object, size_t index) mutable -> bool {
ASSERT(thread->status == THREADSTATUS_WAIT_HLE_EVENT);
callback(thread, context, reason);
context.WriteToOutgoingCommandBuffer(*thread);
return true;
};
auto event = Kernel::Event::Create(Kernel::ResetType::OneShot, "HLE Pause Event: " + reason);
thread->status = THREADSTATUS_WAIT_HLE_EVENT;
thread->wait_objects = {event};
event->AddWaitingThread(thread);
if (timeout > 0) {
thread->WakeAfterDelay(timeout);
}
return event;
}
HLERequestContext::HLERequestContext(SharedPtr<Kernel::ServerSession> server_session)
: server_session(std::move(server_session)) {
cmd_buf[0] = 0;
@ -35,7 +62,7 @@ HLERequestContext::~HLERequestContext() = default;
void HLERequestContext::ParseCommandBuffer(u32_le* src_cmdbuf, bool incoming) {
IPC::RequestParser rp(src_cmdbuf);
command_header = std::make_unique<IPC::CommandHeader>(rp.PopRaw<IPC::CommandHeader>());
command_header = std::make_shared<IPC::CommandHeader>(rp.PopRaw<IPC::CommandHeader>());
if (command_header->type == IPC::CommandType::Close) {
// Close does not populate the rest of the IPC header
@ -45,7 +72,7 @@ void HLERequestContext::ParseCommandBuffer(u32_le* src_cmdbuf, bool incoming) {
// If handle descriptor is present, add size of it
if (command_header->enable_handle_descriptor) {
handle_descriptor_header =
std::make_unique<IPC::HandleDescriptorHeader>(rp.PopRaw<IPC::HandleDescriptorHeader>());
std::make_shared<IPC::HandleDescriptorHeader>(rp.PopRaw<IPC::HandleDescriptorHeader>());
if (handle_descriptor_header->send_current_pid) {
rp.Skip(2, false);
}
@ -88,7 +115,7 @@ void HLERequestContext::ParseCommandBuffer(u32_le* src_cmdbuf, bool incoming) {
// All outgoing domain messages have the domain header, if only incoming has it
if (incoming || domain_message_header) {
domain_message_header =
std::make_unique<IPC::DomainMessageHeader>(rp.PopRaw<IPC::DomainMessageHeader>());
std::make_shared<IPC::DomainMessageHeader>(rp.PopRaw<IPC::DomainMessageHeader>());
} else {
if (Session()->IsDomain())
LOG_WARNING(IPC, "Domain request has no DomainMessageHeader!");
@ -96,7 +123,7 @@ void HLERequestContext::ParseCommandBuffer(u32_le* src_cmdbuf, bool incoming) {
}
data_payload_header =
std::make_unique<IPC::DataPayloadHeader>(rp.PopRaw<IPC::DataPayloadHeader>());
std::make_shared<IPC::DataPayloadHeader>(rp.PopRaw<IPC::DataPayloadHeader>());
data_payload_offset = rp.GetCurrentOffset();
@ -159,8 +186,11 @@ ResultCode HLERequestContext::PopulateFromIncomingCommandBuffer(u32_le* src_cmdb
return RESULT_SUCCESS;
}
ResultCode HLERequestContext::WriteToOutgoingCommandBuffer(u32_le* dst_cmdbuf, Process& dst_process,
HandleTable& dst_table) {
ResultCode HLERequestContext::WriteToOutgoingCommandBuffer(Thread& thread) {
std::array<u32, IPC::COMMAND_BUFFER_LENGTH> dst_cmdbuf;
Memory::ReadBlock(*thread.owner_process, thread.GetTLSAddress(), dst_cmdbuf.data(),
dst_cmdbuf.size() * sizeof(u32));
// The header was already built in the internal command buffer. Attempt to parse it to verify
// the integrity and then copy it over to the target command buffer.
ParseCommandBuffer(cmd_buf.data(), false);
@ -171,7 +201,7 @@ ResultCode HLERequestContext::WriteToOutgoingCommandBuffer(u32_le* dst_cmdbuf, P
if (domain_message_header)
size -= sizeof(IPC::DomainMessageHeader) / sizeof(u32);
std::copy_n(cmd_buf.begin(), size, dst_cmdbuf);
std::copy_n(cmd_buf.begin(), size, dst_cmdbuf.data());
if (command_header->enable_handle_descriptor) {
ASSERT_MSG(!move_objects.empty() || !copy_objects.empty(),
@ -213,6 +243,11 @@ ResultCode HLERequestContext::WriteToOutgoingCommandBuffer(u32_le* dst_cmdbuf, P
dst_cmdbuf[domain_offset++] = static_cast<u32_le>(request_handlers.size());
}
}
// Copy the translated command buffer back into the thread's command buffer area.
Memory::WriteBlock(*thread.owner_process, thread.GetTLSAddress(), dst_cmdbuf.data(),
dst_cmdbuf.size() * sizeof(u32));
return RESULT_SUCCESS;
}

34
src/core/hle/kernel/hle_ipc.h
View File

@ -6,6 +6,7 @@
#include <array>
#include <memory>
#include <string>
#include <vector>
#include <boost/container/small_vector.hpp>
#include "common/common_types.h"
@ -13,6 +14,7 @@
#include "core/hle/ipc.h"
#include "core/hle/kernel/kernel.h"
#include "core/hle/kernel/server_session.h"
#include "core/hle/kernel/thread.h"
namespace Service {
class ServiceFrameworkBase;
@ -24,6 +26,7 @@ class Domain;
class HandleTable;
class HLERequestContext;
class Process;
class Event;
/**
* Interface implemented by HLE Session handlers.
@ -102,14 +105,31 @@ public:
return server_session;
}
using WakeupCallback = std::function<void(SharedPtr<Thread> thread, HLERequestContext& context,
ThreadWakeupReason reason)>;
/**
* Puts the specified guest thread to sleep until the returned event is signaled or until the
* specified timeout expires.
* @param thread Thread to be put to sleep.
* @param reason Reason for pausing the thread, to be used for debugging purposes.
* @param timeout Timeout in nanoseconds after which the thread will be awoken and the callback
* invoked with a Timeout reason.
* @param callback Callback to be invoked when the thread is resumed. This callback must write
* the entire command response once again, regardless of the state of it before this function
* was called.
* @returns Event that when signaled will resume the thread and call the callback function.
*/
SharedPtr<Event> SleepClientThread(SharedPtr<Thread> thread, const std::string& reason,
u64 timeout, WakeupCallback&& callback);
void ParseCommandBuffer(u32_le* src_cmdbuf, bool incoming);
/// Populates this context with data from the requesting process/thread.
ResultCode PopulateFromIncomingCommandBuffer(u32_le* src_cmdbuf, Process& src_process,
HandleTable& src_table);
/// Writes data from this context back to the requesting process/thread.
ResultCode WriteToOutgoingCommandBuffer(u32_le* dst_cmdbuf, Process& dst_process,
HandleTable& dst_table);
ResultCode WriteToOutgoingCommandBuffer(Thread& thread);
u32_le GetCommand() const {
return command;
@ -139,7 +159,7 @@ public:
return buffer_c_desciptors;
}
const std::unique_ptr<IPC::DomainMessageHeader>& GetDomainMessageHeader() const {
const std::shared_ptr<IPC::DomainMessageHeader>& GetDomainMessageHeader() const {
return domain_message_header;
}
@ -212,10 +232,10 @@ private:
boost::container::small_vector<SharedPtr<Object>, 8> copy_objects;
boost::container::small_vector<std::shared_ptr<SessionRequestHandler>, 8> domain_objects;
std::unique_ptr<IPC::CommandHeader> command_header;
std::unique_ptr<IPC::HandleDescriptorHeader> handle_descriptor_header;
std::unique_ptr<IPC::DataPayloadHeader> data_payload_header;
std::unique_ptr<IPC::DomainMessageHeader> domain_message_header;
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::vector<IPC::BufferDescriptorX> buffer_x_desciptors;
std::vector<IPC::BufferDescriptorABW> buffer_a_desciptors;
std::vector<IPC::BufferDescriptorABW> buffer_b_desciptors;

21
src/core/hle/kernel/thread.cpp
View File

@ -55,16 +55,6 @@ inline static u32 const NewThreadId() {
Thread::Thread() {}
Thread::~Thread() {}
/**
* Check if the specified thread is waiting on the specified address to be arbitrated
* @param thread The thread to test
* @param wait_address The address to test against
* @return True if the thread is waiting, false otherwise
*/
static bool CheckWait_AddressArbiter(const Thread* thread, VAddr wait_address) {
return thread->status == THREADSTATUS_WAIT_ARB && wait_address == thread->wait_address;
}
void Thread::Stop() {
// Cancel any outstanding wakeup events for this thread
CoreTiming::UnscheduleEvent(ThreadWakeupEventType, callback_handle);
@ -102,12 +92,6 @@ void WaitCurrentThread_Sleep() {
thread->status = THREADSTATUS_WAIT_SLEEP;
}
void WaitCurrentThread_ArbitrateAddress(VAddr wait_address) {
Thread* thread = GetCurrentThread();
thread->wait_address = wait_address;
thread->status = THREADSTATUS_WAIT_ARB;
}
void ExitCurrentThread() {
Thread* thread = GetCurrentThread();
thread->Stop();
@ -129,7 +113,8 @@ static void ThreadWakeupCallback(u64 thread_handle, int cycles_late) {
bool resume = true;
if (thread->status == THREADSTATUS_WAIT_SYNCH_ANY ||
thread->status == THREADSTATUS_WAIT_SYNCH_ALL || thread->status == THREADSTATUS_WAIT_ARB) {
thread->status == THREADSTATUS_WAIT_SYNCH_ALL ||
thread->status == THREADSTATUS_WAIT_HLE_EVENT) {
// Remove the thread from each of its waiting objects' waitlists
for (auto& object : thread->wait_objects)
@ -163,7 +148,7 @@ void Thread::ResumeFromWait() {
switch (status) {
case THREADSTATUS_WAIT_SYNCH_ALL:
case THREADSTATUS_WAIT_SYNCH_ANY:
case THREADSTATUS_WAIT_ARB:
case THREADSTATUS_WAIT_HLE_EVENT:
case THREADSTATUS_WAIT_SLEEP:
case THREADSTATUS_WAIT_IPC:
break;

2
src/core/hle/kernel/thread.h
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@ -38,7 +38,7 @@ enum ThreadProcessorId : s32 {
enum ThreadStatus {
THREADSTATUS_RUNNING, ///< Currently running
THREADSTATUS_READY, ///< Ready to run
THREADSTATUS_WAIT_ARB, ///< Waiting on an address arbiter
THREADSTATUS_WAIT_HLE_EVENT, ///< Waiting for hle event to finish
THREADSTATUS_WAIT_SLEEP, ///< Waiting due to a SleepThread SVC
THREADSTATUS_WAIT_IPC, ///< Waiting for the reply from an IPC request
THREADSTATUS_WAIT_SYNCH_ANY, ///< Waiting due to WaitSynch1 or WaitSynchN with wait_all = false

3
src/core/hle/kernel/wait_object.cpp
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@ -39,7 +39,8 @@ SharedPtr<Thread> WaitObject::GetHighestPriorityReadyThread() {
for (const auto& thread : waiting_threads) {
// The list of waiting threads must not contain threads that are not waiting to be awakened.
ASSERT_MSG(thread->status == THREADSTATUS_WAIT_SYNCH_ANY ||
thread->status == THREADSTATUS_WAIT_SYNCH_ALL,
thread->status == THREADSTATUS_WAIT_SYNCH_ALL ||
thread->status == THREADSTATUS_WAIT_HLE_EVENT,
"Inconsistent thread statuses in waiting_threads");
if (thread->current_priority >= candidate_priority)

25
src/core/hle/service/nvflinger/buffer_queue.cpp
View File

@ -26,24 +26,30 @@ void BufferQueue::SetPreallocatedBuffer(u32 slot, IGBPBuffer& igbp_buffer) {
LOG_WARNING(Service, "Adding graphics buffer %u", slot);
queue.emplace_back(buffer);
if (buffer_wait_event) {
buffer_wait_event->Signal();
}
}
u32 BufferQueue::DequeueBuffer(u32 pixel_format, u32 width, u32 height) {
boost::optional<u32> BufferQueue::DequeueBuffer(u32 width, u32 height) {
auto itr = std::find_if(queue.begin(), queue.end(), [&](const Buffer& buffer) {
// Only consider free buffers. Buffers become free once again after they've been Acquired
// and Released by the compositor, see the NVFlinger::Compose method.
if (buffer.status != Buffer::Status::Free)
if (buffer.status != Buffer::Status::Free) {
return false;
}
// Make sure that the parameters match.
return buffer.igbp_buffer.width == width && buffer.igbp_buffer.height == height;
});
if (itr == queue.end()) {
LOG_CRITICAL(Service_NVDRV, "no free buffers for pixel_format=%d, width=%d, height=%d",
pixel_format, width, height);
itr = queue.begin();
return boost::none;
}
buffer_wait_event = nullptr;
itr->status = Buffer::Status::Dequeued;
return itr->slot;
}
@ -81,6 +87,10 @@ void BufferQueue::ReleaseBuffer(u32 slot) {
ASSERT(itr != queue.end());
ASSERT(itr->status == Buffer::Status::Acquired);
itr->status = Buffer::Status::Free;
if (buffer_wait_event) {
buffer_wait_event->Signal();
}
}
u32 BufferQueue::Query(QueryType type) {
@ -96,5 +106,10 @@ u32 BufferQueue::Query(QueryType type) {
return 0;
}
void BufferQueue::SetBufferWaitEvent(Kernel::SharedPtr<Kernel::Event>&& wait_event) {
ASSERT_MSG(!buffer_wait_event, "buffer_wait_event only supports a single waiting thread!");
buffer_wait_event = std::move(wait_event);
}
} // namespace NVFlinger
} // namespace Service

6
src/core/hle/service/nvflinger/buffer_queue.h
View File

@ -69,12 +69,13 @@ public:
};
void SetPreallocatedBuffer(u32 slot, IGBPBuffer& buffer);
u32 DequeueBuffer(u32 pixel_format, u32 width, u32 height);
boost::optional<u32> DequeueBuffer(u32 width, u32 height);
const IGBPBuffer& RequestBuffer(u32 slot) const;
void QueueBuffer(u32 slot, BufferTransformFlags transform);
boost::optional<const Buffer&> AcquireBuffer();
void ReleaseBuffer(u32 slot);
u32 Query(QueryType type);
void SetBufferWaitEvent(Kernel::SharedPtr<Kernel::Event>&& wait_event);
u32 GetId() const {
return id;
@ -90,6 +91,9 @@ private:
std::vector<Buffer> queue;
Kernel::SharedPtr<Kernel::Event> native_handle;
/// Used to signal waiting thread when no buffers are available
Kernel::SharedPtr<Kernel::Event> buffer_wait_event;
};
} // namespace NVFlinger

3
src/core/hle/service/service.cpp
View File

@ -152,8 +152,7 @@ ResultCode ServiceFrameworkBase::HandleSyncRequest(Kernel::HLERequestContext& co
UNIMPLEMENTED_MSG("command_type=%d", context.GetCommandType());
}
u32* cmd_buf = (u32*)Memory::GetPointer(Kernel::GetCurrentThread()->GetTLSAddress());
context.WriteToOutgoingCommandBuffer(cmd_buf, *Core::CurrentProcess(), Kernel::g_handle_table);
context.WriteToOutgoingCommandBuffer(*Kernel::GetCurrentThread());
return RESULT_SUCCESS;
}

28
src/core/hle/service/vi/vi.cpp
View File

@ -486,12 +486,30 @@ private:
ctx.WriteBuffer(response.Serialize());
} else if (transaction == TransactionId::DequeueBuffer) {
IGBPDequeueBufferRequestParcel request{ctx.ReadBuffer()};
const u32 width{request.data.width};
const u32 height{request.data.height};
boost::optional<u32> slot = buffer_queue->DequeueBuffer(width, height);
u32 slot = buffer_queue->DequeueBuffer(request.data.pixel_format, request.data.width,
request.data.height);
IGBPDequeueBufferResponseParcel response{slot};
ctx.WriteBuffer(response.Serialize());
if (slot != boost::none) {
// Buffer is available
IGBPDequeueBufferResponseParcel response{*slot};
ctx.WriteBuffer(response.Serialize());
} else {
// Wait the current thread until a buffer becomes available
auto wait_event = ctx.SleepClientThread(
Kernel::GetCurrentThread(), "IHOSBinderDriver::DequeueBuffer", -1,
[=](Kernel::SharedPtr<Kernel::Thread> thread, Kernel::HLERequestContext& ctx,
ThreadWakeupReason reason) {
// Repeat TransactParcel DequeueBuffer when a buffer is available
auto buffer_queue = nv_flinger->GetBufferQueue(id);
boost::optional<u32> slot = buffer_queue->DequeueBuffer(width, height);
IGBPDequeueBufferResponseParcel response{*slot};
ctx.WriteBuffer(response.Serialize());
IPC::ResponseBuilder rb{ctx, 2};
rb.Push(RESULT_SUCCESS);
});
buffer_queue->SetBufferWaitEvent(std::move(wait_event));
}
} else if (transaction == TransactionId::RequestBuffer) {
IGBPRequestBufferRequestParcel request{ctx.ReadBuffer()};

6
src/yuzu/debugger/wait_tree.cpp
View File

@ -150,8 +150,8 @@ QString WaitTreeThread::GetText() const {
case THREADSTATUS_READY:
status = tr("ready");
break;
case THREADSTATUS_WAIT_ARB:
status = tr("waiting for address 0x%1").arg(thread.wait_address, 8, 16, QLatin1Char('0'));
case THREADSTATUS_WAIT_HLE_EVENT:
status = tr("waiting for HLE return");
break;
case THREADSTATUS_WAIT_SLEEP:
status = tr("sleeping");
@ -180,7 +180,7 @@ QColor WaitTreeThread::GetColor() const {
return QColor(Qt::GlobalColor::darkGreen);
case THREADSTATUS_READY:
return QColor(Qt::GlobalColor::darkBlue);
case THREADSTATUS_WAIT_ARB:
case THREADSTATUS_WAIT_HLE_EVENT:
return QColor(Qt::GlobalColor::darkRed);
case THREADSTATUS_WAIT_SLEEP:
return QColor(Qt::GlobalColor::darkYellow);