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// Package lex implements the lexical scanner for Suneido | |
package lex | |
import ( | |
"bytes" | |
"strings" | |
"unicode" | |
"unicode/utf8" | |
) |
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// Problem... | |
// I want to do bulk processing against a paginated API | |
// Spawning a go routine per page DOS's the site, so I need throttling | |
// Instead send the offsets to a channel and spawn a number of workers | |
// to process the pages | |
// | |
// I can't just use 2 channels, because I want to easily consume | |
// the output and signal done with close(output) and double closing | |
// a channel causes a panic. I also don't know how many responses I'm | |
// going to get out, so I can't consume a fixed amount. |
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Latency Comparison Numbers (~2012) | |
---------------------------------- | |
L1 cache reference 0.5 ns | |
Branch mispredict 5 ns | |
L2 cache reference 7 ns 14x L1 cache | |
Mutex lock/unlock 25 ns | |
Main memory reference 100 ns 20x L2 cache, 200x L1 cache | |
Compress 1K bytes with Zippy 3,000 ns 3 us | |
Send 1K bytes over 1 Gbps network 10,000 ns 10 us | |
Read 4K randomly from SSD* 150,000 ns 150 us ~1GB/sec SSD |
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// Copyright (C) 2011 by Christoph Hack. All rights reserved. | |
// Use of this source code is governed by the New BSD License. | |
/* | |
This program contains a simple micro-benchmark for a Disruptor [1] like | |
event buffer (or at least what I think that Disruptor might be). There | |
isn't any kind of API yet and this test is currently limited to a | |
single producer - single consumer architecture, but generally the | |
architecture of Disruptor is also well suited for multiple producers and | |
consumers. |
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# ~/.tmux.conf | |
# | |
# See the following files: | |
# | |
# /opt/local/share/doc/tmux/t-williams.conf | |
# /opt/local/share/doc/tmux/screen-keys.conf | |
# /opt/local/share/doc/tmux/vim-keys.conf | |
# | |
# URLs to read: | |
# |
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include $(GOROOT)/src/Make.inc | |
GOFMT=gofmt -spaces=true -tabindent=false -tabwidth=4 | |
all: | |
$(GC) jsontest.go | |
$(LD) -o jsontest.out jsontest.$O | |
format: | |
$(GOFMT) -w jsontest.go |