Posted by jpluimers on 2019/02/23
Idera is laying of a lot of really good Travis engineers.
If you want to hire them, then follow the [Archive.is] #TravisAlums hashtag on Twitter
Via: [WayBack] José León Serna on Twitter: “Idera acquired Embarcadero Technologies in 2016 and fired almost all its R&D (150+ people in Spain, Russia, US, etc) so not sure why #TravisAlums are surprised, that’s what they do, that’s their business model.”
–jeroen
Posted in Continuous Integration, Development, Software Development, TravisCI | Leave a Comment »
Posted by jpluimers on 2019/02/22
When your UniFi Cloud Key web interface shows this [Archive.is] after upgrading:
UniFi Controller is starting up…
Please wait a moment
Then you just ran into a bug which seems to occur most with 5.9.29 of the UniFi software: [Archive.is] “UniFi Controller is starting up…” “Please wait a moment” “5.9.29” – Google Search
The easiest way is to restore from a backup: this usually works.
For that you need ssh access, which usually is with the ubnt user. But you could have made life more complicated when you followed these:
Steps from [WayBack] UniFi Controller is starting up… Please Wait A Moment – Ubiquiti Networks Community (thanks [Archive.is] About mrfoxdk – Ubiquiti Networks Community!):
- SSH to the Unifi CloudKey
dpkg -P unifi- Open a browser and browse the URL of CloudKey
- Login
- Press “Install” under UniFi
- Wait for the process to complete, and then wait a bit for the service to be brought online.
- Recover the configuration backup from the latest backup
Step 2 above will purge the unifi software of the cloud key as per dpkg --help:
Posted in *nix, Power User, Ubiquiti, WiFi | Leave a Comment »
Posted by jpluimers on 2019/02/22
This has happened to me on most Macs with most Apple Mac OS X / MacOS / whatever versions: the built in sound controls for internal speakers and head phones fail to work (keyboard shortcuts and UI both fail).
The solution at [WayBack] mavericks – Unable to modify the volume with the keyboard – Ask Different works, but be sure to require the kernel module steps:
open up a Terminal window and run:
sudo killall coreaudiodsudo kextunload /System/Library/Extensions/AppleHDA.kext sudo kextload /System/Library/Extensions/AppleHDA.kext
–jeroen
Posted in Apple, Mac, Mac OS X / OS X / MacOS, MacBook, MacBook Retina, MacBook-Air, MacMini, macOS 10.12 Sierra, OS X 10.10 Yosemite, OS X 10.11 El Capitan, OS X 10.9 Mavericks, Power User | Leave a Comment »
Posted by jpluimers on 2019/02/22
Yes, some people still use DVD devices. My mentally retarded brother does every now and then, so it was a big problem that one day he could not put play a photo DVD any more.
This happened:
The selected device was gone. Reboots (including cold ones) didn’t help.
What helped was selecting the “Dual Channel PCI IDE Controller”, remove it, then reboot so Windows would try to re-install the drivers. After that the DVD drive appeared again.
Later I found these two links with similar solutions:
–jeroen
Posted in Power User, Windows, Windows 10 | Leave a Comment »
Posted by jpluimers on 2019/02/21
A while ago, I ran into a problem that an anonymous thread would run longer than the main thread of the application.
This caused all sorts of trouble, so in this case I decided to fix it for that particular thread.
There are various opinions if this should be done for all threads or not. Like always, it depends, so it is good to mention a few:
This particular case resulted into the memory manager shutting down earlier than the anonymous thread, but the anonymous thread was still using memory allocation functions, resulting into a few things of which you do not want the first and second to happen on a continuous integration system:
--------------------------- MyIntegrationTests.exe: MM Operation after uninstall. --------------------------- FastMM has detected a GetMem call after FastMM was uninstalled. --------------------------- OK ---------------------------
or
--------------------------- MyIntegrationTests.exe: MM Operation after uninstall. --------------------------- FastMM has detected a FreeMem call after FastMM was uninstalled. --------------------------- OK ---------------------------
either of them followed by
--------------------------- Error --------------------------- Runtime error 203 at 00408EFF --------------------------- OK ---------------------------
or
--------------------------- Error --------------------------- Runtime error 204 at 0040AFE9 --------------------------- OK ---------------------------
The errors are mappings of:
203, { reOutOfMemory }
204, { reInvalidPtr }
MyIntegrationTests_MemoryManager_EventLog.txt to rapidly grow to 100s of megabytes.MyIntegrationTests_MemoryManager_EventLog.txt not to be truncated.This particular case was easy to fix by adding a global (but implementation section contained) boolean indicating if the thread was already finished:
unit DebugInformationLoaderUnit;
interface
implementation
uses
JclDebug;
var
LoadDebugInformationAsyncFinished: Boolean = False;
procedure LoadDebugInformationAsync;
begin
TThread.CreateAnonymousThread(
procedure
begin
TThread.NameThreadForDebugging('LoadDebugInforoamtionAsync');
DebugInfoAvailable(MainInstance);
LoadDebugInformationAsyncFinished := True;
end).Start;
end;
initialization
LoadDebugInformationAsync;
finalization
while not LoadDebugInformationAsyncFinished do
begin
Sleep(1);
end;
end.
In addition, I did this to suppress message boxes outside Delphi:
program MyIntegrationTests;
...
{$Include FastMM4Options.inc}
uses
FastMM4 in '..\..\..\Shared\FastMM4.pas',
System.Classes,
...;
{$R *.RES}
begin
TThread.NameThreadForDebugging(ParamStr(0));
SuppressMessageBoxes := SuppressMessageBoxes // follow pattern in FastMM4.FinalizeMemoryManager
{$ifdef RequireIDEPresenceForLeakReporting}
and DelphiIsRunning
{$endif}
{$ifdef RequireDebuggerPresenceForLeakReporting}
and ((DebugHook <> 0)
{$ifdef PatchBCBTerminate}
or (Assigned(pCppDebugHook) and (pCppDebugHook^ <> 0))
{$endif PatchBCBTerminate}
)
{$endif}
;
{$WARN SYMBOL_PLATFORM OFF} NoErrMsg := {$WARN SYMBOL_PLATFORM ON} SuppressMessageBoxes; // Set RTL message boxes as well;
...
end.
–jeroen
Posted in Conference Topics, Conferences, Delphi, Development, Event, Software Development | Leave a Comment »
Posted by jpluimers on 2019/02/21
For my link archive:
[WayBack] How to collect HAProxy metrics
Once you’ve figured out what to monitor, it’s time to collect HAProxy metrics! Use either HAProxy’s built-in tools or third-party programs to get the info you need.
Note that the heading of the listen configuration for the built-in statistics page now should be like michael-sqlbot explains in [WayBack] HAProxy 1.7 Statistics Setup – Server Fault:
listen stats bind :9000
He posted more HAProxy insights, for instance [WayBack] understanding HAProxy Frontend and Backend current session stats – Server Fault.
–jeroen
Posted in *nix, HAProxy, Power User | Leave a Comment »
Posted by jpluimers on 2019/02/21
From the geek fun department: [WayBack] IP over Avian Carriers – Wikipedia.
I learned through this slightly after the fight to keep HTTP status code 418 (I’m a teapot) which is part of RFC2324 released on April 1st, 1998.
The IP over Avian Carriers is part of three RFCs, all released on April 1st in various years:
–jeroen
via: Http-statuscode ‘I’m a teapot’ is voorlopig veilig – IT Pro – .Geeks – Tweakers
Posted in Communications Development, Development, Fun, Geeky, HTTP, Internet protocol suite, Software Development, TCP | Leave a Comment »
Posted by jpluimers on 2019/02/20
You can fire a debugger breakpoint using either of these two:
asm int 3 end which is the x86 debug interruptDebugBreak() which is the Windows API function wrapping the above interruptI’m not sure how accurate it is (in the past it would fail under some debuggers other than the Delphi IDE), but as of Delphi 2, there is a DebugHook variable that is non-zero when running under the Delphi debugger, so you can protect your code.
Via [WayBack] I remember some time ago, Jeroen Pluijmers posted a snippet of how to place a breakpoint directly in the Delphi source without relying on the F5 key. – Alberto Paganini – Google+
Related:
–jeroen
Posted in Delphi, Development, Software Development, Windows Development | Leave a Comment »
Posted by jpluimers on 2019/02/20
Cool site if I ever need to decipher C declarations again: [WayBack] cdecl: C gibberish ↔ English.
You can even store the C code as a URL.
via:
–jeroen
Posted in C, Delphi, Development, Software Development | 2 Comments »
Posted by jpluimers on 2019/02/20
Smart idea by [WayBack] tinspin/rupy: Async. HTTP & NoSQL Distr. VHost PaaS at [WayBack] 687474703a2f2f686f73742e727570792e73652f636c75737465722e6a7067 (480×640):
Apart from one part I found on Amazon, most parts (and more if you want to built it for instance inside a case) can be obtained from [WayBack] DC : Adafruit Industries, Unique & fun DIY electronics and kits, see the pictures and links below.
I think [WayBack] power supply options for multiple PIs – Raspberry Pi Forums got inspired by this or vice versa.
[WayBack] Amazon.com: kenable DC Power Splitter 5 way Adapter 2.1mm CCTV 12V PSU to 5 Camera Cable: Electronics
[WayBack] Female DC Power adapter – 2.1mm jack to screw terminal block ID: 368 – $2.00 : Adafruit Industries, Unique & fun DIY electronics and kits
[WayBack] 2-Way 2.1mm DC Barrel Jack Splitter Squid ID: 1351 – $2.95 : Adafruit Industries, Unique & fun DIY electronics and kits
[WayBack] MicroUSB Plug to 5.5/2.1mm DC Barrel Jack Adapter ID: 2727 – $1.95 : Adafruit Industries, Unique & fun DIY electronics and kits
[WayBack] Waterproof DC Power Cable Set – 5.5/2.1mm ID: 743 – $2.50 : Adafruit Industries, Unique & fun DIY electronics and kits
[WayBack] Male DC Power adapter – 2.1mm plug to screw terminal block ID: 369 – $2.00 : Adafruit Industries, Unique & fun DIY electronics and kits
[WayBack] Panel Mount 2.1mm DC barrel jack ID: 610 – $2.95 : Adafruit Industries, Unique & fun DIY electronics and kits
[WayBack] MicroUSB to 5.5/2.1mm DC Barrel Jack Adapter ID: 2789 – $1.95 : Adafruit Industries, Unique & fun DIY electronics and kits
[WayBack] 4-Way 2.1mm DC Barrel Jack Splitter ID: 1352 – $4.95 : Adafruit Industries, Unique & fun DIY electronics and kitsPosted in Development, Hardware Development, Raspberry Pi | Leave a Comment »
The Wiert Corner - irregular stream of stuff 