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author | normal <normal@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2017-05-21 23:52:08 +0000 |
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committer | normal <normal@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2017-05-21 23:52:08 +0000 |
commit | 8623ba8618ad3fce642b5d206626a3b39bf11139 (patch) | |
tree | 3676ac855fade1c5daf92e795cfe1618aa63e410 /lib | |
parent | 7406d7cffaef9664c32904ee9670d2fd5948efc8 (diff) | |
download | ruby-8623ba8618ad3fce642b5d206626a3b39bf11139.tar.gz |
lib/net/protocol: clear short-lived read buffer
Using a parallel Net::HTTP downloader, this reduced memory usage
from around 120MB to 50MB on my 32-bit x86 system.
* lib/net/protocol.rb (rbuf_fill): clear temporary buffer
Test script I used:
require 'net/http'
require 'uri'
require 'digest/sha1'
url = 'http://80x24.org/git-i-forgot-to-pack/objects/pack/pack-97b25a76c03b489d4cbbd85b12d0e1ad28717e55.idx'
uri = URI(url)
use_ssl = "https" == uri.scheme
thrs = 30.times.map do
Thread.start do
cur = Thread.current.object_id
Net::HTTP.start(uri.host, uri.port, use_ssl: use_ssl) do |http|
req = Net::HTTP::Get.new(uri)
http.request(req) do |res|
dig = Digest::SHA1.new
res.read_body do |buf|
dig.update(buf)
#buf.clear # most Ruby programmers don't do this :<
end
warn "#{Time.now} #{cur} #{dig.hexdigest}\n"
end
end
:done
end
end
p thrs.map(&:value)
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@58840 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Diffstat (limited to 'lib')
-rw-r--r-- | lib/net/protocol.rb | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/lib/net/protocol.rb b/lib/net/protocol.rb index 518b92c4ab..797966ac7d 100644 --- a/lib/net/protocol.rb +++ b/lib/net/protocol.rb @@ -171,7 +171,9 @@ module Net # :nodoc: def rbuf_fill case rv = @io.read_nonblock(BUFSIZE, exception: false) when String - return @rbuf << rv + @rbuf << rv + rv.clear + return when :wait_readable @io.to_io.wait_readable(@read_timeout) or raise Net::ReadTimeout # continue looping |