2014-05-15 17:19:34 -05:00
|
|
|
// Copyright 2014 Citra Emulator Project / PPSSPP Project
|
2014-12-16 23:38:14 -06:00
|
|
|
// Licensed under GPLv2 or any later version
|
2014-11-19 02:49:13 -06:00
|
|
|
// Refer to the license.txt file included.
|
2014-05-15 17:19:34 -05:00
|
|
|
|
|
|
|
#pragma once
|
|
|
|
|
2015-01-05 01:48:36 -06:00
|
|
|
#include <array>
|
|
|
|
#include <deque>
|
|
|
|
|
|
|
|
#include <boost/range/algorithm_ext/erase.hpp>
|
|
|
|
|
2014-05-15 17:19:34 -05:00
|
|
|
namespace Common {
|
|
|
|
|
2015-01-05 01:48:36 -06:00
|
|
|
template<class T, unsigned int N>
|
2014-05-15 17:19:34 -05:00
|
|
|
struct ThreadQueueList {
|
2015-01-05 01:48:36 -06:00
|
|
|
// TODO(yuriks): If performance proves to be a problem, the std::deques can be replaced with
|
|
|
|
// (dynamically resizable) circular buffers to remove their overhead when
|
|
|
|
// inserting and popping.
|
2014-11-19 02:49:13 -06:00
|
|
|
|
2015-01-05 01:48:36 -06:00
|
|
|
typedef unsigned int Priority;
|
2014-05-15 17:19:34 -05:00
|
|
|
|
2015-01-05 01:48:36 -06:00
|
|
|
// Number of priority levels. (Valid levels are [0..NUM_QUEUES).)
|
|
|
|
static const Priority NUM_QUEUES = N;
|
2014-05-15 17:19:34 -05:00
|
|
|
|
|
|
|
ThreadQueueList() {
|
2015-01-05 01:48:36 -06:00
|
|
|
first = nullptr;
|
2014-05-15 17:19:34 -05:00
|
|
|
}
|
|
|
|
|
|
|
|
// Only for debugging, returns priority level.
|
2015-01-05 01:48:36 -06:00
|
|
|
Priority contains(const T& uid) {
|
|
|
|
for (Priority i = 0; i < NUM_QUEUES; ++i) {
|
|
|
|
Queue& cur = queues[i];
|
|
|
|
if (std::find(cur.data.cbegin(), cur.data.cend(), uid) != cur.data.cend()) {
|
|
|
|
return i;
|
2014-05-15 17:19:34 -05:00
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
|
2015-03-23 22:55:21 -05:00
|
|
|
T get_first() {
|
|
|
|
Queue *cur = first;
|
|
|
|
while (cur != nullptr) {
|
|
|
|
if (!cur->data.empty()) {
|
|
|
|
return cur->data.front();
|
|
|
|
}
|
|
|
|
cur = cur->next_nonempty;
|
|
|
|
}
|
|
|
|
|
|
|
|
return T();
|
|
|
|
}
|
|
|
|
|
2015-01-05 01:48:36 -06:00
|
|
|
T pop_first() {
|
2014-05-15 17:19:34 -05:00
|
|
|
Queue *cur = first;
|
2015-01-05 01:48:36 -06:00
|
|
|
while (cur != nullptr) {
|
|
|
|
if (!cur->data.empty()) {
|
|
|
|
auto tmp = std::move(cur->data.front());
|
|
|
|
cur->data.pop_front();
|
|
|
|
return tmp;
|
|
|
|
}
|
|
|
|
cur = cur->next_nonempty;
|
2014-05-15 17:19:34 -05:00
|
|
|
}
|
|
|
|
|
2015-01-05 01:48:36 -06:00
|
|
|
return T();
|
2014-05-15 17:19:34 -05:00
|
|
|
}
|
|
|
|
|
2015-01-05 01:48:36 -06:00
|
|
|
T pop_first_better(Priority priority) {
|
2014-05-15 17:19:34 -05:00
|
|
|
Queue *cur = first;
|
|
|
|
Queue *stop = &queues[priority];
|
2015-01-05 01:48:36 -06:00
|
|
|
while (cur < stop) {
|
|
|
|
if (!cur->data.empty()) {
|
|
|
|
auto tmp = std::move(cur->data.front());
|
|
|
|
cur->data.pop_front();
|
|
|
|
return tmp;
|
|
|
|
}
|
|
|
|
cur = cur->next_nonempty;
|
2014-05-15 17:19:34 -05:00
|
|
|
}
|
|
|
|
|
2015-01-05 01:48:36 -06:00
|
|
|
return T();
|
2014-05-15 17:19:34 -05:00
|
|
|
}
|
|
|
|
|
2015-01-05 01:48:36 -06:00
|
|
|
void push_front(Priority priority, const T& thread_id) {
|
2014-05-15 17:19:34 -05:00
|
|
|
Queue *cur = &queues[priority];
|
2015-01-05 01:48:36 -06:00
|
|
|
cur->data.push_front(thread_id);
|
2014-05-15 17:19:34 -05:00
|
|
|
}
|
|
|
|
|
2015-01-05 01:48:36 -06:00
|
|
|
void push_back(Priority priority, const T& thread_id) {
|
2014-05-15 17:19:34 -05:00
|
|
|
Queue *cur = &queues[priority];
|
2015-01-05 01:48:36 -06:00
|
|
|
cur->data.push_back(thread_id);
|
2014-05-15 17:19:34 -05:00
|
|
|
}
|
|
|
|
|
2015-03-23 22:55:21 -05:00
|
|
|
void move(const T& thread_id, Priority old_priority, Priority new_priority) {
|
|
|
|
remove(old_priority, thread_id);
|
|
|
|
prepare(new_priority);
|
|
|
|
push_back(new_priority, thread_id);
|
|
|
|
}
|
|
|
|
|
2015-01-05 01:48:36 -06:00
|
|
|
void remove(Priority priority, const T& thread_id) {
|
2014-05-15 17:19:34 -05:00
|
|
|
Queue *cur = &queues[priority];
|
2015-01-05 01:48:36 -06:00
|
|
|
boost::remove_erase(cur->data, thread_id);
|
2014-05-15 17:19:34 -05:00
|
|
|
}
|
|
|
|
|
2015-01-05 01:48:36 -06:00
|
|
|
void rotate(Priority priority) {
|
2014-05-15 17:19:34 -05:00
|
|
|
Queue *cur = &queues[priority];
|
|
|
|
|
2015-01-05 01:48:36 -06:00
|
|
|
if (cur->data.size() > 1) {
|
|
|
|
cur->data.push_back(std::move(cur->data.front()));
|
|
|
|
cur->data.pop_front();
|
2014-05-15 17:19:34 -05:00
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2015-01-05 01:48:36 -06:00
|
|
|
void clear() {
|
|
|
|
queues.fill(Queue());
|
|
|
|
first = nullptr;
|
2014-05-15 17:19:34 -05:00
|
|
|
}
|
|
|
|
|
2015-01-05 01:48:36 -06:00
|
|
|
bool empty(Priority priority) const {
|
2014-05-15 17:19:34 -05:00
|
|
|
const Queue *cur = &queues[priority];
|
2015-01-05 01:48:36 -06:00
|
|
|
return cur->data.empty();
|
2014-05-15 17:19:34 -05:00
|
|
|
}
|
|
|
|
|
2015-01-05 01:48:36 -06:00
|
|
|
void prepare(Priority priority) {
|
|
|
|
Queue* cur = &queues[priority];
|
|
|
|
if (cur->next_nonempty == UnlinkedTag())
|
|
|
|
link(priority);
|
2014-05-15 17:19:34 -05:00
|
|
|
}
|
|
|
|
|
|
|
|
private:
|
2015-01-05 01:48:36 -06:00
|
|
|
struct Queue {
|
|
|
|
// Points to the next active priority, skipping over ones that have never been used.
|
|
|
|
Queue* next_nonempty = UnlinkedTag();
|
|
|
|
// Double-ended queue of threads in this priority level
|
|
|
|
std::deque<T> data;
|
|
|
|
};
|
|
|
|
|
|
|
|
/// Special tag used to mark priority levels that have never been used.
|
|
|
|
static Queue* UnlinkedTag() {
|
|
|
|
return reinterpret_cast<Queue*>(1);
|
2014-05-15 17:19:34 -05:00
|
|
|
}
|
|
|
|
|
2015-01-05 01:48:36 -06:00
|
|
|
void link(Priority priority) {
|
2014-05-15 17:19:34 -05:00
|
|
|
Queue *cur = &queues[priority];
|
2015-01-05 01:48:36 -06:00
|
|
|
|
|
|
|
for (int i = priority - 1; i >= 0; --i) {
|
|
|
|
if (queues[i].next_nonempty != UnlinkedTag()) {
|
|
|
|
cur->next_nonempty = queues[i].next_nonempty;
|
|
|
|
queues[i].next_nonempty = cur;
|
2014-05-15 17:19:34 -05:00
|
|
|
return;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2015-01-05 01:48:36 -06:00
|
|
|
cur->next_nonempty = first;
|
2014-05-15 17:19:34 -05:00
|
|
|
first = cur;
|
|
|
|
}
|
|
|
|
|
|
|
|
// The first queue that's ever been used.
|
2015-01-05 01:48:36 -06:00
|
|
|
Queue* first;
|
2014-05-15 17:19:34 -05:00
|
|
|
// The priority level queues of thread ids.
|
2015-01-05 01:48:36 -06:00
|
|
|
std::array<Queue, NUM_QUEUES> queues;
|
2014-05-15 17:19:34 -05:00
|
|
|
};
|
|
|
|
|
|
|
|
} // namespace
|