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Add hotpath for BufferedOutStream (#3858)

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* Add hotpath for BufferedOutStream
This commit is contained in:
frmdstryr 2019-12-10 13:44:59 -05:00 committed by Andrew Kelley
parent 5ada11449a
commit f30af12bea
1 changed files with 10 additions and 1 deletions
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11
lib/std/io.zig
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@ -592,7 +592,16 @@ pub fn BufferedOutStreamCustom(comptime buffer_size: usize, comptime OutStreamEr
fn writeFn(out_stream: *Stream, bytes: []const u8) Error!void {
const self = @fieldParentPtr(Self, "stream", out_stream);
if (bytes.len >= self.buffer.len) {
if (bytes.len == 1) {
// This is not required logic but a shorter path
// for single byte writes
self.buffer[self.index] = bytes[0];
self.index += 1;
if (self.index == buffer_size) {
try self.flush();
}
return;
} else if (bytes.len >= self.buffer.len) {
try self.flush();
return self.unbuffered_out_stream.write(bytes);
}