diff options
| author | Max Kellermann <max@duempel.org> | 2014-08-07 16:11:00 +0200 |
|---|---|---|
| committer | Max Kellermann <max@duempel.org> | 2014-08-07 16:11:00 +0200 |
| commit | 67958f7fa7ae0d9b91fcd6025cda6c6abbecd6da (patch) | |
| tree | fb8e181fc60bb4c9c25c0319709c149f88ccfd15 /src/util | |
| parent | ab9c5272741f5c348471cbeee5c9dbe7b562b9fd (diff) | |
| download | mpd-67958f7fa7ae0d9b91fcd6025cda6c6abbecd6da.tar.gz mpd-67958f7fa7ae0d9b91fcd6025cda6c6abbecd6da.tar.xz mpd-67958f7fa7ae0d9b91fcd6025cda6c6abbecd6da.zip | |
util/{Static,Foreign}FifoBuffer: lazy shift
Reduce the number of unnecessary memmove() calls.
Diffstat (limited to 'src/util')
| -rw-r--r-- | src/util/ForeignFifoBuffer.hxx | 6 | ||||
| -rw-r--r-- | src/util/StaticFifoBuffer.hxx | 6 |
2 files changed, 10 insertions, 2 deletions
diff --git a/src/util/ForeignFifoBuffer.hxx b/src/util/ForeignFifoBuffer.hxx index 0ebcd6069..b829fb030 100644 --- a/src/util/ForeignFifoBuffer.hxx +++ b/src/util/ForeignFifoBuffer.hxx @@ -147,7 +147,11 @@ public: * When you are finished, call append(). */ Range Write() { - Shift(); + if (IsEmpty()) + Clear(); + else if (tail == capacity) + Shift(); + return Range(data + tail, capacity - tail); } diff --git a/src/util/StaticFifoBuffer.hxx b/src/util/StaticFifoBuffer.hxx index 67645638e..c1b64bb1e 100644 --- a/src/util/StaticFifoBuffer.hxx +++ b/src/util/StaticFifoBuffer.hxx @@ -92,7 +92,11 @@ public: * When you are finished, call append(). */ Range Write() { - Shift(); + if (IsEmpty()) + Clear(); + else if (tail == size) + Shift(); + return Range(data + tail, size - tail); } |