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common: Make use of [[nodiscard]] where applicable

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Now that clang-format makes [[nodiscard]] attributes format sensibly, we
can apply them to several functions within the common library to allow
the compiler to complain about any misuses of the functions.
This commit is contained in:
Lioncash 2020-08-14 09:38:45 -04:00
parent 81eae1562a
commit 2ef7815422
34 changed files with 343 additions and 358 deletions
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10
src/common/thread_queue_list.h
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@ -18,14 +18,14 @@ struct ThreadQueueList {
using Priority = unsigned int;
// Number of priority levels. (Valid levels are [0..NUM_QUEUES).)
static const Priority NUM_QUEUES = N;
static constexpr Priority NUM_QUEUES = N;
ThreadQueueList() {
first = nullptr;
}
// Only for debugging, returns priority level.
Priority contains(const T& uid) const {
[[nodiscard]] Priority contains(const T& uid) const {
for (Priority i = 0; i < NUM_QUEUES; ++i) {
const Queue& cur = queues[i];
if (std::find(cur.data.cbegin(), cur.data.cend(), uid) != cur.data.cend()) {
@ -36,7 +36,7 @@ struct ThreadQueueList {
return -1;
}
T get_first() const {
[[nodiscard]] T get_first() const {
const Queue* cur = first;
while (cur != nullptr) {
if (!cur->data.empty()) {
@ -49,7 +49,7 @@ struct ThreadQueueList {
}
template <typename UnaryPredicate>
T get_first_filter(UnaryPredicate filter) const {
[[nodiscard]] T get_first_filter(UnaryPredicate filter) const {
const Queue* cur = first;
while (cur != nullptr) {
if (!cur->data.empty()) {
@ -129,7 +129,7 @@ struct ThreadQueueList {
first = nullptr;
}
bool empty(Priority priority) const {
[[nodiscard]] bool empty(Priority priority) const {
const Queue* cur = &queues[priority];
return cur->data.empty();
}