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mrkn id:mrkn

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SEGVæŽ¢åµãŒå¾€ã - ãªã‚‹ã›ã«ã£ã
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mrkn 2017/09/02
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ruby

gdb

debugging

segv
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ãƒ‡ãƒãƒƒã‚°æƒ…å ±ã®æ©ãæ–¹ - Qiita
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mrkn 2017/02/15
debugging
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Is there anyway to read performance counters on OS X Mountain Lion?
mrkn 2016/03/23
osx

performance

debugging
ãƒªãƒ³ã‚¯
Ruby ãƒ—ãƒã‚»ã‚¹ã‚’è¿½ã„ã‹ã‘ã‚‹ãƒ„ãƒ¼ãƒ«(ãƒ—ãƒãƒ•ã‚¡ã‚¤ãƒ©ã¨ã‹)10é¸ - sonots:blog
mrkn 2014/07/30
è‰¯ã„ã¾ã¨ã‚

ruby

debugging
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Chrome/Firefox ã® JavaScript Debugger ã§ã‚¹ãƒ†ãƒƒãƒ—å®Ÿè¡Œæ™‚ã«ãƒ©ã‚¤ãƒ–ãƒ©ãƒªãƒ»ãƒ•ãƒ¬ãƒ¼ãƒ ãƒ¯ãƒ¼ã‚¯ã‚’ã‚¹ã‚ãƒƒãƒ—ã™ã‚‹ - Qiita
JavaScript ã®ãƒ‡ãƒãƒƒã‚¬ã€ä¾¿åˆ©ã§ã™ã‚ˆãã€‚ã¤ã‹ã£ã¦ã€ã¾ã™ã‚ˆã! Chrome, Firefox ä¸¡æ–¹ã® Developer Tool (Web Inspector) ã«ã¯ JavaScript ãƒ‡ãƒãƒƒã‚¬ãŒä»˜å±žã—ã¦ã„ã¾ã™ã€‚ä¸¡è€…ã«ã¯ Event Listener Breakpoints æ©Ÿèƒ½ãŒå˜åœ¨ã—ã€ç‰¹å®šã‚¤ãƒ™ãƒ³ãƒˆã®ãƒªã‚¹ãƒŠå…¨éƒ¨ã«ãƒ–ãƒ¬ãƒ¼ã‚¯ãƒã‚¤ãƒ³ãƒˆã‚’ä»•æŽ›ã‘ã‚‹äº‹ãŒå¯èƒ½ã§ã™ã€‚ ã—ã‹ã—ã€jQuery ã® $.on, $.bind, ãã®ä»– $.click(fn) ç‰ã§ã‚¤ãƒ™ãƒ³ãƒˆãƒãƒ³ãƒ‰ãƒ©ã‚’å®šç¾©ã™ã‚‹ã¨ jQuery ã®ä¸ã§ addEventListeners ãŒå‘¼ã°ã‚Œå†…éƒ¨ã§å‡¦ç†ã‚’ã—ãŸå¾Œã«å®Ÿéš›ã« jQuery ã«æ¸¡ã—ãŸé–¢æ•°ãŒå‘¼ã°ã‚Œã¾ã™ã€‚ ãã®ãŸã‚ã€JavaScript ãƒ‡ãƒãƒƒã‚¬ã¯ jQuery å†…éƒ¨ã§ãƒ–ãƒ¬ãƒ¼ã‚¯ã—æœ¬æ¥é£›ã‚“ã§ã»ã—ã„ã¯ãšã®é–¢æ•°ã«ä¸€ç™ºã§é£›ã‚“ã§ãã‚Œã¾ã›ã‚“ã€‚ ãã“ã§ Firefox ã«ã¯ Library
mrkn 2014/01/23
chrome

firefox

javascript

debugging
ãƒªãƒ³ã‚¯
Tips and Tricks: Ignoring Library Code While Debugging in Chrome
Tips and Tricks: Ignoring library code while debugging in Chrome Firefox has recently released a feature they call "Black Boxing". It's very useful, you can black-box JavaScript source files on a case-by-case basis. When a library is black-boxed the Debugger ignores it. When you're stepping through lines the Debugger will automatically step through lines contained in black-boxed sources. This is g
mrkn 2014/01/23
ä¾¿åˆ©ãã†

chrome

javascript

debugging
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ãƒ‡ãƒãƒƒã‚°ã®ç†è«–ã¨å®Ÿè·µ
Andreas Zellerã€€è‘—ã€ä¸ç”° ç§€åŸºã€€ç›£è¨³ã€ä»Šç”° æ˜Œå®ã€å¤§å²© å°šå®ã€ç«¹ç”° é¦™è‹—ã€å®®åŽŸ ä¹…ç¾Žåã€å®—å½¢ ç´—ç¹”ã€€è¨³ ã€Žãƒ“ãƒ¥ãƒ¼ãƒ†ã‚£ãƒ•ãƒ«ã‚³ãƒ¼ãƒ‰ã€ã€ŽMaking Softwareã€ã®è‘—è€…ã®ä¸€äººã§ã‚ã‚Šã€GNU Data Display Debuggerï¼ˆDDDï¼‰ã®é–‹ç™ºè€…ã§ã‚ã‚‹è‘—è€…ãŒã€ãªãœãƒ—ãƒã‚°ãƒ©ãƒ ãŒã†ã¾ãå‹•ã‹ãªã„ã‹ã«ã¤ã„ã¦ã€åŠ¹çŽ‡çš„ãªåŽŸå› ç©¶æ˜Žã¨ãƒ‡ãƒãƒƒã‚°æ–¹æ³•ã‚’ææ¡ˆã€‚ãªãœã€Œç³»çµ±çš„ã€ã§ã€Œè‡ªå‹•çš„ã€ãªãƒ‡ãƒãƒƒã‚°ãŒå¿…è¦ãªã®ã‹ã®é‡è¦æ€§ã‚’èª¬ãã€ãã—ã¦ãã‚Œã‚’å®Ÿç¾ã™ã‚‹ãŸã‚ã®æ‰‹æ³•ã¨ã—ã¦ã€å·®åˆ†ãƒ‡ãƒãƒƒã‚°ã€ç§‘å¦çš„æ‰‹æ³•ã¨ã„ã£ãŸå…·ä½“çš„ãªãƒ†ã‚¯ãƒ‹ãƒƒã‚¯ã‚„ã•ã¾ã–ã¾ãªãƒ„ãƒ¼ãƒ«ã®è©³ç´°ã‚’ç´¹ä»‹ã—ã¦ã„ã¾ã™ã€‚ãƒ‡ãƒãƒƒã‚°ä½œæ¥ã‚’åŠ¹çŽ‡åŒ–ã—ã€ãƒ‡ãƒãƒƒã‚°ã®è‹¦ç—›ã‚’è»½æ¸›ã™ã‚‹ã¨ã„ã†è‘—è€…ã®ä¿¡å¿µã«åŸºã¥ã„ã¦æ›¸ã‹ã‚ŒãŸæœ¬æ›¸ã¯ã€å¤šãã®ãƒ—ãƒã‚°ãƒ©ãƒžã«ã¨ã£ã¦ç¦éŸ³ã¨ãªã‚‹ä¸€å†Šã§ã™ã€‚ åºæ–‡ ã¾ãˆãŒã 1 ç« éšœå®³ã¯ã©ã®ã‚ˆã†ã«èµ·ã“ã‚‹ã®ã‹ 1.1 ãƒ—ãƒã‚°ãƒ©ãƒ ãŒã†ã¾ãå‹•ã‹ãªã„ï¼ 1.2 æ¬ é™¥ã‹ã‚‰å¤±æ•—ã¸
mrkn 2012/12/24
ã»ã—ã„

books

debugging

programming
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EXEC_BAD_ACCESSã®ãƒ‡ãƒãƒƒã‚°æ–¹æ³• - Paradigm Shift Design
xcodeã§ãƒ—ãƒã‚°ãƒ©ãƒ ã‚’æ›¸ã„ã¦ã„ã‚‹ã¨ã€ãƒ¡ãƒ¢ãƒªç®¡ç†ãªãžå¿˜å´ã®ã‹ãªãŸãªã®ã§ã€ãƒªãƒ¼ã‚¯ã—ã¦ã„ãŸã‚Šã€è§£æ”¾æ¸ˆã¿ã®ãƒ¡ãƒ¢ãƒªã«ã‚¢ã‚¯ã‚»ã‚¹ã—ã¦ã„ãŸã‚Šã¨ã€å•é¡ŒãŒå¤šã€…ã‚ã‚‹ã€‚ xcodeã§ã®ãƒ‡ãƒãƒƒã‚°ã‚³ãƒ³ã‚½ãƒ¼ãƒ«ã¯ã€åŸºæœ¬çš„ã«gdbãªã®ã§ã€VisualStudioã§é–‹ç™ºã™ã‚‹ã‚ˆã†ã«ã¯ç°¡å˜ã«å•é¡Œç®‡æ‰€ã‚’è¦‹ã¤ã‘å‡ºã™ã“ã¨ãŒã§ããªã„ã€‚ ãƒã‚¤ãƒ³ã‚¿ã«å¯¾ã™ã‚‹ä¸æ£ãªã‚¢ã‚¯ã‚»ã‚¹ã¯ã€å¤§ä½“ã®ã¨ã“ã‚ ãƒ—ãƒã‚°ãƒ©ãƒ ã¯ã‚·ã‚°ãƒŠãƒ«ã‚’å—ä¿¡ã—ã¾ã—ãŸï¼šâ€œEXC_BAD_ACCESSâ€ ã¨ã„ã†ãƒ¡ãƒƒã‚»ãƒ¼ã‚¸ãŒå‡ºã‚‹ã ã‘ã§ã€ã€Œã©ã“ã§ãã‚ŒãŒèµ·ã“ã£ãŸã®ã‹ã€ã«ã¤ã„ã¦ã®ä½•ã®æ‰‹ãŒã‹ã‚Šã‚‚ä¸Žãˆã‚‰ã‚Œãªã„ã€‚Breakã™ã‚‰ã—ãªã„ã€‚ ã•ã™ãŒã«ã“ã‚“ãªçŠ¶æ³ã§ãƒ‡ãƒãƒƒã‚°ã—ã¦ã„ã‚‹äººã¯ã„ãªã„ã ã‚ã†ã¨ã€æ¤œç´¢ã‚’ã‹ã‘ã¦ã¿ã‚‹ã¨ã€ DebuggingAutorelease - CocoaDev NSZombieEnabled - CocoaDev ã‚ãŸã‚ŠãŒå½¹ã«ç«‹ã¡ãã†ã§ã‚ã‚‹ã€‚ ã¨ã‚Šã‚ãˆãšè‰²ã€…è©¦è¡ŒéŒ¯èª¤ã—ã¦ã¿ãŸãŒã€NSZom
mrkn 2012/08/25
osx

debugging
ãƒªãƒ³ã‚¯
ã‚¹ã‚¿ãƒƒã‚¯ã‚ªãƒ¼ãƒãƒ¼ãƒ•ãƒãƒ¼ã®ãƒãƒ³ãƒ‰ãƒªãƒ³ã‚° (Stack Overflow Handling)
ä½œæˆæ—¥ï¼š2004.04.12 æ›´æ–°æ—¥ï¼š2006.02.19 æ›´æ–°è¨˜éŒ² (2004.04.12) 3/6ã€ 3/11ã€ 3/13 ã®æ—¥è¨˜ã‚’ã¾ã¨ã‚ã¦ä½œæˆã€‚ (2004.05.07) æ–‡ç« ã‚’ä¿®æ£ã€‚ã‚µãƒ³ãƒ—ãƒ«ã‚³ãƒ¼ãƒ‰ã‚’è¿½åŠ ã€‚ (2005.01.20) alternative â†’ alterante ã«ä¿®æ£ã€‚ (2005.02.13) è¿½è¨˜ã‚’è¨˜è¿°ã€‚ (2006.02.17) linux_stack_info.cpp ã®å®Ÿè£…ã«èª¤ã‚ŠãŒã‚ã£ãŸã®ã§ä¿®æ£ã€‚ (2006.02.19) BSD ç³»OS ã§ã®ã‚¹ã‚¿ãƒƒã‚¯é ˜åŸŸæƒ…å ±ã®å–å¾—ã®ä»•æ–¹ã‚’è¿½åŠ åˆã‚ã« C/C++ ã§ãƒ—ãƒã‚°ãƒ©ãƒ ã‚’ã—ã¦ã„ã‚‹ã¨ã¤ã„å¿˜ã‚Œã¦ã—ã¾ã†ã®ãŒã‚¹ãƒ¬ãƒƒãƒ‰ã®ã‚¹ã‚¿ãƒƒã‚¯ã‚ªãƒ¼ãƒãƒ¼ãƒ•ãƒãƒ¼ã®å•é¡Œã€‚ æœ€è¿‘ã® OS ã¯ã‚¹ãƒ¬ãƒƒãƒ‰å½“ãŸã‚Š 2ã€œ8MB ã®ã‚¹ã‚¿ãƒƒã‚¯é ˜åŸŸã‚’æŒã£ã¦ã„ã‚‹ãŸã‚ã€ã‚ˆã»ã©ã®ã“ã¨ãŒãªã„é™ã‚Šã‚¹ã‚¿ãƒƒã‚¯ãŒæº¢ã‚Œã¦ã—ã¾ã†ã“ã¨ã¯ãªã„ã€‚ ã ãŒã€å†å¸°ã‚„ alloca ã‚’ç©æ¥µçš„ã«ä½¿
mrkn 2012/07/02
debugging

programming

stack
ãƒªãƒ³ã‚¯
Debugging with Thread Dumps
2012-06-02 I recently upgraded TheClymb to use the Redis 3.0 gem. When I did this, our test suite halted mid-spec and pegged the CPU at 100%. I suspected an infinite loop but how do you determine where the loop is? A naive approach might use a binary search with print statements but I realized I could do something more effective: dump thread backtraces for the current process. I wrote this trap re
mrkn 2012/06/11
ruby

debugging
ãƒªãƒ³ã‚¯
ä»™çŸ³æµ©æ˜Žã®æ—¥è¨˜: x86_64 Linux ã§ãƒ¡ãƒ¢ãƒªãƒ»ãƒ‡ãƒãƒƒã‚°ãƒ»ãƒ„ãƒ¼ãƒ« Valgrind ã‚’ä½¿ã†å ´åˆã®æ³¨æ„ç‚¹
æ¬¡ã®ã‚ˆã†ãªãƒ—ãƒã‚°ãƒ©ãƒ test.c ã«ã¤ã„ã¦è€ƒãˆã‚‹: #include <stdio.h> #include <stdlib.h> #include <sys/types.h> #include <string.h> struct test { int32_t len; int8_t buf[16]; }; int main(int argc, char *argv[]) { struct test *p = malloc(sizeof(struct test)); int8_t buf[16]; p->len = sizeof(p->buf); bzero(p->buf, p->len); printf("0x%lX-0x%lX => 0x%lX\n", (long)p->buf, (long)p->buf+p->len-1, (long)buf); bcopy(p->buf, buf,
mrkn 2012/05/16
debugging

valgrind
ãƒªãƒ³ã‚¯
SystemTapã§çœŸçŠ¯äººã‚’æ•ã¾ãˆã‚ï¼
SystemTapã§çœŸçŠ¯äººã‚’æ•ã¾ãˆã‚ï¼ï¼šLinuxãƒˆãƒ©ãƒ–ãƒ«ã‚·ãƒ¥ãƒ¼ãƒ†ã‚£ãƒ³ã‚°æŽ¢åµå›£ã€€ç•ªå¤–ç·¨ï¼ˆ3ï¼‰ï¼ˆ1/4 ãƒšãƒ¼ã‚¸ï¼‰ NTTã‚°ãƒ«ãƒ¼ãƒ—ã®å„ç¤¾ã§é³´ã‚‰ã—ãŸä¿ºãŸã¡Linuxãƒˆãƒ©ãƒ–ãƒ«ã‚·ãƒ¥ãƒ¼ãƒ†ã‚£ãƒ³ã‚°æŽ¢åµå›£ã¯ã€å„ç¤¾ã§åŸ¹ã£ãŸOSSé–¢é€£æŠ€è¡“ã‚’æ‰‹ã«ã€NTT OSSã‚»ãƒ³ã‚¿ã«é›†ã‚ã‚‰ã‚ŒãŸã€‚æ™®æ®µã¯åŸºæœ¬çš„ã«NTTã‚°ãƒ«ãƒ¼ãƒ—ã®ã¿ã‚’ç›¸æ‰‹ã«æ´»å‹•ã—ã¦ã„ã‚‹ãŒã€ãã‚Œã ã‘ã§çµ‚ã‚ã‚‹ä¿ºãŸã¡ã˜ã‚ƒã‚ãªã„ã€‚ ã‚½ãƒ¼ã‚¹ã‚³ãƒ¼ãƒ‰ã•ãˆã‚ã‚Œã°ã©ã‚“ãªãƒˆãƒ©ãƒ–ãƒ«ã§ã‚‚è§£æ±ºã™ã‚‹å‘½çŸ¥ã‚‰ãšã€ä¸å¯èƒ½ã‚’å¯èƒ½ã«ã—ã€å¤šãã®ãƒã‚°ã‚’ç²‰ç •ã™ã‚‹ã€ä¿ºãŸã¡Linuxãƒˆãƒ©ãƒ–ãƒ«ã‚·ãƒ¥ãƒ¼ãƒ†ã‚£ãƒ³ã‚°æŽ¢åµå›£ï¼ã€€åŠ©ã‘ã‚’å€Ÿã‚ŠãŸã„ã¨ãã¯ã€ã„ã¤ã§ã‚‚ã„ã£ã¦ãã‚Œï¼ OSï¼šé«˜ç”°å“²ç”Ÿ ä¿ºã¯ãƒªãƒ¼ãƒ€ãƒ¼ã€é«˜ç”°å“²ç”Ÿã€‚Linuxã®é”äººã€‚ä¿ºã®ã‚ˆã†ã«ã‚½ãƒ¼ã‚¹ã‚³ãƒ¼ãƒ‰ãƒ¬ãƒ™ãƒ«ã§OSã‚’ç†è§£ã—ã¦ã„ã‚‹äººé–“ã§ãªã‘ã‚Œã°ã€ç™¾æˆ¦éŒ¬ç£¨ã®Linuxãƒˆãƒ©ãƒ–ãƒ«ã‚·ãƒ¥ãƒ¼ãƒ†ã‚£ãƒ³ã‚°æŽ¢åµå›£ã®ãƒªãƒ¼ãƒ€ãƒ¼ã¯å‹™ã¾ã‚‰ã‚“ã€‚ Webï¼šç¦å±±ç¾©ä» ä¿ºã¯ã€ç¦å±±ç¾©ä»ã€‚WebæŠ€è¡“ã®é”äººã•ã€‚Apache
mrkn 2011/02/25
linux

systemtap

dtrace

debugging
ãƒªãƒ³ã‚¯
memprof: A Ruby level memory profiler at time to bleed by Joe Damato
If you enjoy this article, subscribe (via RSS or e-mail) and follow me on twitter. What is memprof and why do I care? memprof is a Ruby gem which supplies memory profiler functionality similar to bleak_house without patching the Ruby VM. You just install the gem, call a function or two, and off you go. Where do I get it? memprof is available on gemcutter, so you can just: gem install memprof Feel
mrkn 2010/08/30
programming

ruby

memprof

debugging

profiler
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An Interview With Linus Torvalds: Linux and Git - Part 1 30 Years Of Linux
mrkn 2010/08/20
linux

git

bisect

debugging
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http://blogs.sun.com/katakai/entry/dtrace_gui_plugin_for_netbeans
mrkn 2007/11/18
dtrace

netbeans

development

debugging
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http://blogs.sun.com/yappri/entry/dtrace_and_mod_perl
mrkn 2007/11/18
dtrace

mod_perl

solaris

debugging

development
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SystemtapOnDebian - Systemtap Wiki
mrkn 2007/11/18
SystemTap (DTrace ã®ã‚ˆã†ãªä½•ã‹) ã‚’ Debian ä¸Šã§ä½¿ã†

systemtap

linux

debian

dtrace

debugging

development
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SystemTap
Overview SystemTap provides free software (GPL) infrastructure to simplify the gathering of information about the running Linux system. This assists diagnosis of a performance or functional probl em. SystemTap eliminates the need for the developer to go through the tedious and disruptive instrument, recompile, install, and reboot sequence that may be otherwise required to collect data. SystemTap pr
mrkn 2007/11/18
Linux ã«ãŠã‘ã‚‹ DTrace ã®ã‚ˆã†ãªä½•ã‹

systemtap

linux

dtrace

development

debugging
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DTrace for FreeBSD
mrkn 2007/11/18
dtrace

freebsd

debugging

development
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mrkn 2007/11/18
dtrace

solaris

development

debugging
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