Bryan Cantrill bcantrill
bcantrill
/ libusb.d
Created
January 7, 2022 14:53
Script that prompted https://twitter.com/bcantrill/status/1479196154990452737
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| #pragma D option nspec=100 | |
| #pragma D option flowindent | |
| pid$target::libusb_submit_transfer:entry | |
| { | |
| self->spec = speculation(); | |
| } | |
| pid$target:*libusb*::entry, |
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| #define NULL ((void *)0) | |
| static char *arr[2] = { "nasal", "demons" }; | |
| long | |
| func() | |
| { | |
| int i; | |
| for (i = 0; i <= 2; i++) { |
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| 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
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| 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
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| 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...
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| 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
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| #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.
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| 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. ;)
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| MIME-Version: 1.0 | |
| Sender: [email protected] | |
| 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> | |
| <[email protected]> | |
| <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…
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| 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%) - - |
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