Merge tag 'v0.21.12'

release v0.21.12

src/util/Compiler.h

@@ -57,18 +57,6 @@
 	(GCC_VERSION > 0 && CLANG_VERSION == 0 && \
 	 GCC_VERSION < GCC_MAKE_VERSION(major, minor, 0))
 
-#ifdef __clang__
-#  if __clang_major__ < 3
-#    error Sorry, your clang version is too old.  You need at least version 3.1.
-#  endif
-#elif defined(__GNUC__)
-#  if GCC_OLDER_THAN(6,0)
-#    error Sorry, your gcc version is too old.  You need at least version 6.0.
-#  endif
-#else
-#  warning Untested compiler.  Use at your own risk!
-#endif
-
 /**
  * Are we building with the specified version of clang or newer?
  */

src/util/StaticFifoBuffer.hxx

@@ -56,11 +56,11 @@ protected:
 	T data[size];
 
 public:
-	constexpr size_type GetCapacity() const {
+	constexpr size_type GetCapacity() const noexcept {
 		return size;
 	}
 
-	void Shift() {
+	void Shift() noexcept {
 		if (head == 0)
 			return;
 
@@ -74,15 +74,15 @@ public:
 		head = 0;
 	}
 
-	void Clear() {
+	void Clear() noexcept {
 		head = tail = 0;
 	}
 
-	bool empty() const {
+	constexpr bool empty() const noexcept {
 		return head == tail;
 	}
 
-	bool IsFull() const {
+	constexpr bool IsFull() const noexcept {
 		return head == 0 && tail == size;
 	}
 
@@ -90,7 +90,7 @@ public:
 	 * Prepares writing.  Returns a buffer range which may be written.
 	 * When you are finished, call Append().
 	 */
-	Range Write() {
+	Range Write() noexcept {
 		if (empty())
 			Clear();
 		else if (tail == size)
@@ -103,7 +103,7 @@ public:
 	 * Expands the tail of the buffer, after data has been written to
 	 * the buffer returned by Write().
 	 */
-	void Append(size_type n) {
+	void Append(size_type n) noexcept {
 		assert(tail <= size);
 		assert(n <= size);
 		assert(tail + n <= size);
@@ -111,18 +111,22 @@ public:
 		tail += n;
 	}
 
+	constexpr size_type GetAvailable() const noexcept {
+		return tail - head;
+	}
+
 	/**
 	 * Return a buffer range which may be read.  The buffer pointer is
 	 * writable, to allow modifications while parsing.
 	 */
-	Range Read() {
+	constexpr Range Read() noexcept {
 		return Range(data + head, tail - head);
 	}
 
 	/**
 	 * Marks a chunk as consumed.
 	 */
-	void Consume(size_type n) {
+	void Consume(size_type n) noexcept {
 		assert(tail <= size);
 		assert(head <= tail);
 		assert(n <= tail);