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| author | Max Kellermann <max@duempel.org> | 2014-08-07 08:53:02 +0200 |
|---|---|---|
| committer | Max Kellermann <max@duempel.org> | 2014-08-07 08:53:02 +0200 |
| commit | 2beb763b4f3d12de7240d9811d8e4baaa094aab6 (patch) | |
| tree | 946390bdfba6ed65954995d2e6ee16bbc33f8b6d | |
| parent | 69ae879c585039297951821e353f7c1ca12b6cb8 (diff) | |
| download | mpd-2beb763b4f3d12de7240d9811d8e4baaa094aab6.tar.gz mpd-2beb763b4f3d12de7240d9811d8e4baaa094aab6.tar.xz mpd-2beb763b4f3d12de7240d9811d8e4baaa094aab6.zip | |
util/ForeignFifoBuffer: add method MoveFrom()
| -rw-r--r-- | src/util/ForeignFifoBuffer.hxx | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/src/util/ForeignFifoBuffer.hxx b/src/util/ForeignFifoBuffer.hxx index cd6fb6101..c52846727 100644 --- a/src/util/ForeignFifoBuffer.hxx +++ b/src/util/ForeignFifoBuffer.hxx @@ -204,6 +204,22 @@ public: return n; } + /** + * Move as much data as possible from the specified buffer. + * + * @return the number of items moved + */ + size_type MoveFrom(ForeignFifoBuffer<T> &src) { + auto r = src.Read(); + auto w = Write(); + size_t n = std::min(r.size, w.size); + + std::move(r.data, r.data + n, w.data); + Append(n); + src.Consume(n); + return n; + } + protected: void Shift() { if (head == 0) |