citra/src/common/thread.h
Tobias 623b0621ab
Port various minor changes from yuzu PRs (#4725)
* common/thread: Remove unused functions

Many of these functions are carried over from Dolphin (where they aren't
used anymore). Given these have no use (and we really shouldn't be
screwing around with OS-specific thread scheduler handling from the
emulator, these can be removed.

The function for setting the thread name is left, however, since it can
have debugging utility usages.

* input_common/sdl: Use a type alias to shorten declaration of GetPollers

Just makes the definitions a little bit more tidy.

* input_common/sdl: Correct return values within implementations of GetPollers()

In both cases, we weren't actually returning anything, which is
undefined behavior.

* yuzu/debugger/graphics_surface: Fill in missing surface format listings

Fills in the missing surface types that were marked as unknown. The
order corresponds with the TextureFormat enum within
video_core/texture.h.

We also don't need to all of these strings as translatable (only the
first string, as it's an English word).

* yuzu/debugger/graphics_surface: Clean up connection overload deduction

We can utilize qOverload with the signal connections to make the
function deducing a little less ugly.

* yuzu/debugger/graphics_surface: Tidy up SaveSurface

- Use QStringLiteral where applicable.

- Use const where applicable

- Remove unnecessary precondition check (we already assert the pixbuf
  being non null)

* yuzu/debugger/graphics_surface: Display error messages for file I/O errors

* core: Add missing override specifiers where applicable

Applies the override specifier where applicable. In the case of
destructors that are  defaulted in their definition, they can
simply be removed.

This also removes the unnecessary inclusions being done in audin_u and
audrec_u, given their close proximity.

* kernel/thread: Make parameter of GetWaitObjectIndex() const qualified

The pointed to member is never actually modified, so it can be made
const.

* kernel/thread: Avoid sign conversion within GetCommandBufferAddress()

Previously this was performing a u64 + int sign conversion. When dealing
with addresses, we should generally be keeping the arithmetic in the
same signedness type.

This also gets rid of the static lifetime of the constant, as there's no
need to make a trivial type like this potentially live for the entire
duration of the program.

* kernel/codeset: Make CodeSet's memory data member a regular std::vector

The use of a shared_ptr is an implementation detail of the VMManager
itself when mapping memory. Because of that, we shouldn't require all
users of the CodeSet to have to allocate the shared_ptr ahead of time.
It's intended that CodeSet simply pass in the required direct data, and
that the memory manager takes care of it from that point on.

This means we just do the shared pointer allocation in a single place,
when loading modules, as opposed to in each loader.

* kernel/wait_object: Make ShouldWait() take thread members by pointer-to-const

Given this is intended as a querying function, it doesn't make sense to
allow the implementer to modify the state of the given thread.
2019-05-01 14:28:49 +02:00

97 lines
2.4 KiB
C++

// Copyright 2013 Dolphin Emulator Project / 2014 Citra Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#pragma once
#include <chrono>
#include <condition_variable>
#include <cstddef>
#include <mutex>
#include <thread>
namespace Common {
class Event {
public:
void Set() {
std::lock_guard lk{mutex};
if (!is_set) {
is_set = true;
condvar.notify_one();
}
}
void Wait() {
std::unique_lock lk{mutex};
condvar.wait(lk, [&] { return is_set; });
is_set = false;
}
template <class Duration>
bool WaitFor(const std::chrono::duration<Duration>& time) {
std::unique_lock lk(mutex);
if (!condvar.wait_for(lk, time, [this] { return is_set; }))
return false;
is_set = false;
return true;
}
template <class Clock, class Duration>
bool WaitUntil(const std::chrono::time_point<Clock, Duration>& time) {
std::unique_lock lk{mutex};
if (!condvar.wait_until(lk, time, [this] { return is_set; }))
return false;
is_set = false;
return true;
}
void Reset() {
std::unique_lock lk{mutex};
// no other action required, since wait loops on the predicate and any lingering signal will
// get cleared on the first iteration
is_set = false;
}
private:
bool is_set = false;
std::condition_variable condvar;
std::mutex mutex;
};
class Barrier {
public:
explicit Barrier(std::size_t count_) : count(count_) {}
/// Blocks until all "count" threads have called Sync()
void Sync() {
std::unique_lock lk{mutex};
const std::size_t current_generation = generation;
if (++waiting == count) {
generation++;
waiting = 0;
condvar.notify_all();
} else {
condvar.wait(lk,
[this, current_generation] { return current_generation != generation; });
}
}
std::size_t Generation() const {
std::unique_lock lk(mutex);
return generation;
}
private:
std::condition_variable condvar;
mutable std::mutex mutex;
std::size_t count;
std::size_t waiting = 0;
std::size_t generation = 0; // Incremented once each time the barrier is used
};
void SetCurrentThreadName(const char* name);
} // namespace Common