Port #4182 from Citra: "Prefix all size_t with std::"

src/common/ring_buffer.h

@@ -19,31 +19,31 @@ namespace Common {
 /// @tparam T            Element type
 /// @tparam capacity     Number of slots in ring buffer
 /// @tparam granularity  Slot size in terms of number of elements
-template <typename T, size_t capacity, size_t granularity = 1>
+template <typename T, std::size_t capacity, std::size_t granularity = 1>
 class RingBuffer {
     /// A "slot" is made of `granularity` elements of `T`.
-    static constexpr size_t slot_size = granularity * sizeof(T);
+    static constexpr std::size_t slot_size = granularity * sizeof(T);
     // T must be safely memcpy-able and have a trivial default constructor.
     static_assert(std::is_trivial_v<T>);
     // Ensure capacity is sensible.
-    static_assert(capacity < std::numeric_limits<size_t>::max() / 2 / granularity);
+    static_assert(capacity < std::numeric_limits<std::size_t>::max() / 2 / granularity);
     static_assert((capacity & (capacity - 1)) == 0, "capacity must be a power of two");
     // Ensure lock-free.
-    static_assert(std::atomic<size_t>::is_always_lock_free);
+    static_assert(std::atomic<std::size_t>::is_always_lock_free);
 
 public:
     /// Pushes slots into the ring buffer
     /// @param new_slots   Pointer to the slots to push
     /// @param slot_count  Number of slots to push
     /// @returns The number of slots actually pushed
-    size_t Push(const void* new_slots, size_t slot_count) {
-        const size_t write_index = m_write_index.load();
-        const size_t slots_free = capacity + m_read_index.load() - write_index;
-        const size_t push_count = std::min(slot_count, slots_free);
+    std::size_t Push(const void* new_slots, std::size_t slot_count) {
+        const std::size_t write_index = m_write_index.load();
+        const std::size_t slots_free = capacity + m_read_index.load() - write_index;
+        const std::size_t push_count = std::min(slot_count, slots_free);
 
-        const size_t pos = write_index % capacity;
-        const size_t first_copy = std::min(capacity - pos, push_count);
-        const size_t second_copy = push_count - first_copy;
+        const std::size_t pos = write_index % capacity;
+        const std::size_t first_copy = std::min(capacity - pos, push_count);
+        const std::size_t second_copy = push_count - first_copy;
 
         const char* in = static_cast<const char*>(new_slots);
         std::memcpy(m_data.data() + pos * granularity, in, first_copy * slot_size);
@@ -55,7 +55,7 @@ public:
         return push_count;
     }
 
-    size_t Push(const std::vector<T>& input) {
+    std::size_t Push(const std::vector<T>& input) {
         return Push(input.data(), input.size());
     }
 
@@ -63,14 +63,14 @@ public:
     /// @param output     Where to store the popped slots
     /// @param max_slots  Maximum number of slots to pop
     /// @returns The number of slots actually popped
-    size_t Pop(void* output, size_t max_slots = ~size_t(0)) {
-        const size_t read_index = m_read_index.load();
-        const size_t slots_filled = m_write_index.load() - read_index;
-        const size_t pop_count = std::min(slots_filled, max_slots);
+    std::size_t Pop(void* output, std::size_t max_slots = ~std::size_t(0)) {
+        const std::size_t read_index = m_read_index.load();
+        const std::size_t slots_filled = m_write_index.load() - read_index;
+        const std::size_t pop_count = std::min(slots_filled, max_slots);
 
-        const size_t pos = read_index % capacity;
-        const size_t first_copy = std::min(capacity - pos, pop_count);
-        const size_t second_copy = pop_count - first_copy;
+        const std::size_t pos = read_index % capacity;
+        const std::size_t first_copy = std::min(capacity - pos, pop_count);
+        const std::size_t second_copy = pop_count - first_copy;
 
         char* out = static_cast<char*>(output);
         std::memcpy(out, m_data.data() + pos * granularity, first_copy * slot_size);
@@ -82,28 +82,28 @@ public:
         return pop_count;
     }
 
-    std::vector<T> Pop(size_t max_slots = ~size_t(0)) {
+    std::vector<T> Pop(std::size_t max_slots = ~std::size_t(0)) {
         std::vector<T> out(std::min(max_slots, capacity) * granularity);
-        const size_t count = Pop(out.data(), out.size() / granularity);
+        const std::size_t count = Pop(out.data(), out.size() / granularity);
         out.resize(count * granularity);
         return out;
     }
 
     /// @returns Number of slots used
-    size_t Size() const {
+    std::size_t Size() const {
         return m_write_index.load() - m_read_index.load();
     }
 
     /// @returns Maximum size of ring buffer
-    constexpr size_t Capacity() const {
+    constexpr std::size_t Capacity() const {
         return capacity;
     }
 
 private:
     // It is important to align the below variables for performance reasons:
     // Having them on the same cache-line would result in false-sharing between them.
-    alignas(128) std::atomic<size_t> m_read_index{0};
-    alignas(128) std::atomic<size_t> m_write_index{0};
+    alignas(128) std::atomic<std::size_t> m_read_index{0};
+    alignas(128) std::atomic<std::size_t> m_write_index{0};
 
     std::array<T, granularity * capacity> m_data;
 };