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Merge pull request #1036 from lioncash/thread

scheduler: Make HaveReadyThreads() a const member function
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bunnei 2018-08-12 22:13:14 -04:00 committed by GitHub
commit 9608f51cde
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3 changed files with 7 additions and 7 deletions

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@ -16,7 +16,7 @@ struct ThreadQueueList {
// (dynamically resizable) circular buffers to remove their overhead when // (dynamically resizable) circular buffers to remove their overhead when
// inserting and popping. // inserting and popping.
typedef unsigned int Priority; using Priority = unsigned int;
// Number of priority levels. (Valid levels are [0..NUM_QUEUES).) // Number of priority levels. (Valid levels are [0..NUM_QUEUES).)
static const Priority NUM_QUEUES = N; static const Priority NUM_QUEUES = N;
@ -26,9 +26,9 @@ struct ThreadQueueList {
} }
// Only for debugging, returns priority level. // Only for debugging, returns priority level.
Priority contains(const T& uid) { Priority contains(const T& uid) const {
for (Priority i = 0; i < NUM_QUEUES; ++i) { for (Priority i = 0; i < NUM_QUEUES; ++i) {
Queue& cur = queues[i]; const Queue& cur = queues[i];
if (std::find(cur.data.cbegin(), cur.data.cend(), uid) != cur.data.cend()) { if (std::find(cur.data.cbegin(), cur.data.cend(), uid) != cur.data.cend()) {
return i; return i;
} }
@ -37,8 +37,8 @@ struct ThreadQueueList {
return -1; return -1;
} }
T get_first() { T get_first() const {
Queue* cur = first; const Queue* cur = first;
while (cur != nullptr) { while (cur != nullptr) {
if (!cur->data.empty()) { if (!cur->data.empty()) {
return cur->data.front(); return cur->data.front();

View file

@ -25,7 +25,7 @@ Scheduler::~Scheduler() {
} }
} }
bool Scheduler::HaveReadyThreads() { bool Scheduler::HaveReadyThreads() const {
std::lock_guard<std::mutex> lock(scheduler_mutex); std::lock_guard<std::mutex> lock(scheduler_mutex);
return ready_queue.get_first() != nullptr; return ready_queue.get_first() != nullptr;
} }

View file

@ -21,7 +21,7 @@ public:
~Scheduler(); ~Scheduler();
/// Returns whether there are any threads that are ready to run. /// Returns whether there are any threads that are ready to run.
bool HaveReadyThreads(); bool HaveReadyThreads() const;
/// Reschedules to the next available thread (call after current thread is suspended) /// Reschedules to the next available thread (call after current thread is suspended)
void Reschedule(); void Reschedule();