Bryan Cantrill bcantrill
bcantrill
/ libusb.d
Created
January 7, 2022 14:53
Script that prompted https://twitter.com/bcantrill/status/1479196154990452737
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| #pragma D option nspec=100 | |
| #pragma D option flowindent | |
| pid$target::libusb_submit_transfer:entry | |
| { | |
| self->spec = speculation(); | |
| } | |
| pid$target:*libusb*::entry, |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| #define NULL ((void *)0) | |
| static char *arr[2] = { "nasal", "demons" }; | |
| long | |
| func() | |
| { | |
| int i; | |
| for (i = 0; i <= 2; i++) { |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| From bmc Sun May 26 23:33:47 2002 | |
| Subject: Memorial Day in uts | |
| To: kernel@eng | |
| Date: Sun, 26 May 2002 23:33:47 -0700 (PDT) | |
| X-Mailer: ELM [version 2.4ME+ PL31H (25)] | |
| MIME-Version: 1.0 | |
| Content-Type: text/plain; charset=US-ASCII | |
| Content-Transfer-Encoding: 7bit | |
| Content-Length: 1906 | |
| Status: RO |
bcantrill
/ gist:5dabd838b7f3ce0bfde8a4934a39cc0d
Last active
August 20, 2016 13:19
Running DTrace on Powershell for Linux (!) running inside an LX-branded Ubuntu 14.04 zone on SmartOS
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| root@1eec2cd3-2cba-e416-e1b6-845b715b736c:~# dtrace -n lx-syscall:::entry'/progenyof($target)/{@[probefunc] = count()}' -c "powershell Get-Process > /dev/null" | |
| dtrace: description 'lx-syscall:::entry' matched 676 probes | |
| dtrace: pid 60025 has exited | |
| arch_prctl 1 | |
| exit_group 1 | |
| getppid 1 | |
| getuid 1 | |
| mincore 1 | |
| mlock 1 |
bcantrill
/ dtrace.conf16.txt
Last active
February 7, 2017 11:22
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| 11:15 Graeme - Distributed DTrace | |
| Max - (Useful!) DTrace intro, including DTrace production golf? | |
| 12:30 George - D language improvements | |
| Matt - D syntactic sugar | |
| Robert - CTF everywhere! | |
| 1:30 Eric - DTracing apps | |
| JoshC - DTrace json() subroutine | |
| Dan - Dynamic asserts |
bcantrill
/ gist:aec10341f8819501704e
Created
June 19, 2015 22:47
The day was April 27, 1999, and I'm pretty sure that sun4c was EOL'd by the time that eli finally booted...
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| BOOT SHOCKER! JAZZMAN KO'S ELI IN MULTIUSER UPSET! | |
| In a sold-out Lab 3219, league veteran and 20 MHz war-horse, jazzman, defeated | |
| the 40 MHz favorite, eli, in a PROM-to-multiuser sprint. jazzman's time of | |
| four minutes, thirty-eight seconds soundly defeated eli's lethargic five | |
| minutes, fifteen seconds. | |
| While the match was at times close, jazzman only stumbled early. "jazzman | |
| was slow bringing up interfaces; I should have caught him then, but I |
bcantrill
/ unmarshal.d
Created
April 25, 2015 02:43
DTrace on Go running in an LX branded zone on Triton
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| #pragma D option flowindent | |
| pid$1::encoding*json.Unmarshal:entry | |
| { | |
| self->in = vtimestamp; | |
| } | |
| pid$1::encoding*:entry, | |
| pid$1::encoding*:return | |
| /self->in/ |
bcantrill
/ dtrace-on-rust
Last active
May 29, 2023 07:37
DTrace on Rust. This shows running dtrace(1M) on a simple Rust program. Rust is running in a 64-bit LX-branded zone on SmartOS, an illumos derivative. Running stock (alpha) Rust and latest SmartOS.
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| root@1eec2cd3-2cba-e416-e1b6-845b715b736c:~# uname -a | |
| Linux 1eec2cd3-2cba-e416-e1b6-845b715b736c 3.13.0 BrandZ virtual linux x86_64 x86_64 x86_64 GNU/Linux | |
| root@1eec2cd3-2cba-e416-e1b6-845b715b736c:~# rustc -Vv | |
| rustc 1.0.0-nightly (44a287e6e 2015-01-08 17:03:40 -0800) | |
| binary: rustc | |
| commit-hash: 44a287e6eb22ec3c2a687fc156813577464017f7 | |
| commit-date: 2015-01-08 17:03:40 -0800 | |
| host: x86_64-unknown-linux-gnu | |
| release: 1.0.0-nightly | |
| root@1eec2cd3-2cba-e416-e1b6-845b715b736c:~# cat hello.rs |
bcantrill
/ gist:8550468
Created
January 21, 2014 23:14
Mail exchange with Aram Hăvărneanu on emulating edge-triggered events on event ports -- including a brilliant rant by Aram on why edge-triggered events are, in fact, a terrible idea. ;)
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| MIME-Version: 1.0 | |
| Sender: bryancantrill@gmail.com | |
| Received: by 10.68.33.97 with HTTP; Sat, 21 Dec 2013 00:11:05 -0800 (PST) | |
| In-Reply-To: <CA+0vZFK2i8aq5DUQpt7wdk=QgodKOOEFgU7vz6n1ti0di-r4hw@mail.gmail.com> | |
| References: <CANp9fE8t68+5_oVc=k=7oQPrSCNH5pnLZ2oP9x3YG8g4a9063A@mail.gmail.com> | |
| <CA+0vZFLRGYwysd8kO+KnazBG=vupfORTD+h1yj_dWur2f7LpPQ@mail.gmail.com> | |
| <CA+0vZFLpu5HFhJZLmpm01WOyzHjnaeHrKcuU7YEpMr6hEvyiRA@mail.gmail.com> | |
| <CAAm8y+jXcQ1ix5neUusW6NHXg+mb0V_ZNxrudjTaETdxhUQzKQ@mail.gmail.com> | |
| <F811D3C5-531A-492A-B390-5086F206DD6C@cheney.net> | |
| <CA+0vZFK2i8aq5DUQpt7wdk=QgodKOOEFgU7vz6n1ti0di-r4hw@mail.gmail.com> |
bcantrill
/ Pinto Moneyball
Created
May 22, 2013 04:37
Me (pathetically) going moneyball on my 8-year-old's baseball season. This is expressing successful putouts (throws or unassisted outs for infield; caught flies for outfield) vs. opportunities. Data was compiled over a course of 12 games with GameChanger, which should be called LifeChanger if you find yourself the scorekeeper for a youth basebal…
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| INFIELD: | |
| PLAYER P 1B 2B SS 3B | |
| ============ ============ ============ ============ ============ ============ | |
| Bxxxx 5/7 ( 71%) - 5/8 ( 62%) 3/9 ( 33%) 6/20 ( 30%) | |
| Cxxxxxxx - 2/2 (100%) 2/4 ( 50%) 2/5 ( 40%) 0/3 ( 0%) | |
| Cxxxxxxx - - 2/7 ( 29%) 1/4 ( 25%) - | |
| Dxx - - 3/7 ( 43%) 1/1 (100%) 1/2 ( 50%) | |
| Dxxxxxx 1/2 ( 50%) - 3/10 ( 30%) - 0/4 ( 0%) | |
| Kxx-Cxxxxx - - 1/2 ( 50%) - - |
NewerOlder