Merge pull request #12364 from JuliaLang/sjk/faster-iobuffer-bytes

Improve IOBuffer read performance
JuliaLang · Jul 29, 2015 · e63f8a5 · e63f8a5
2 parents 9163fe0 + d98ea95
commit e63f8a5
Showing 1 changed file with 6 additions and 4 deletions.
diff --git a/base/iobuffer.jl b/base/iobuffer.jl
@@ -80,13 +80,15 @@ function read_sub{T}(from::AbstractIOBuffer, a::AbstractArray{T}, offs, nel)
     return a
 end
 
-function read(from::AbstractIOBuffer, ::Type{UInt8})
+@inline function read(from::AbstractIOBuffer, ::Type{UInt8})
+    ptr = from.ptr
+    size = from.size
     from.readable || throw(ArgumentError("read failed, IOBuffer is not readable"))
-    if from.ptr > from.size
+    if ptr > size
         throw(EOFError())
     end
-    byte = from.data[from.ptr]
-    from.ptr += 1
+    @inbounds byte = from.data[ptr]
+    from.ptr = ptr + 1
     return byte
 end