Tag - Delphi

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2020-09-09

Data Alignment and Delphi 10.4.1

Some regression has been reported with Delphi 10.4.1 and SynPDF. From the Github issue description: Generating a PDF via VLCCanvas and TPdfDocumentGDI causes access violation when compiled with Delphi 10.4.1 with record field alignment compiler option set to "byte" or "off". When  […]

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2020-07-20

Special Care of Delphi 10.4

sillybug.jpg, Jul 2020

A regression in the Delphi 10.4 compiler was identified. Its optimizer wrongly deletes some code, in one very specific part of the framework.

sillybug.jpg, Jul 2020

As a result a GPF (Access violation) may be triggered with Delphi 10.4 in release mode - the debug mode (when optimization is disabled) has no problem. Thanks to great user feedback, we were able to circumvent it. But we should better stay in alert, like any mORMot, until Delphi 10.4 officially release a patch.

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2020-03-30

Debriefing of mORMot2 Survey

Thanks you all for have posted your feedback on our mORMot2 Survey!

Here are some insights.

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2020-03-28

Faster Double-To-Text Conversion

On server side, a lot of CPU is done processing conversions to or from text. Mainly JSON these days.

In mORMot, we take care a lot about performance, so we have rewritten most conversion functions to have something faster than the Delphi or FPC RTL can offer.
Only float to text conversion was not available. And RTL str/floattexttext performance, at least under Delphi, is not consistent among platforms.
So we just added a new Double-To-Text set of functions.

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2020-03-06

We Need U: Survey about mORMot 2.0

First of all, if it was not clear enough: Delphi will continue to be supported in mORMot 2.0. Some people reported that our previous article may have been misleading. But perhaps not all versions. For sure, Delphi 5 and Kylix will not be supported in mORMot 2. It is also possible that it would not  […]

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2020-03-03

Preparing Revision 2.x of the mORMot Framework

The more I think of it, the more I am convinced it is time to change how the framework is versioned.
We have version 1.18 since years... difficult to follow... time to upgrade!


I would like to upgrade mORMot to version 2 - with a major refactoring.

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2020-02-17

New move/fillchar optimized sse2/avx asm version

Our Open Source framework includes some optimized asm alternatives to RTL's move() and fillchar(), named MoveFast() and FillCharFast().

We just rewrote from scratch the x86_64 version of those, which was previously taken from third-party snippets.
The brand new code is meant to be more efficient and maintainable. In particular, we switched to SIMD 128-bit SSE2 or 256bit AVX memory access (if available), whereas current version was using 64-bit regular registers. The small blocks (i.e. < 32 bytes) process occurs very often, e.g. when processing strings, so has been tuned a lot. Non temporal instructions (i.e. bypassing the CPU cache) are used for biggest chunks of data. We tested ERMS support, but it was found of no benefit in respect to our optimized SIMD, and was actually slower than our non-temporal variants. So ERMS code is currently disabled in the source, and may be enabled on demand by a conditional.

FPC move() was not bad. Delphi's Win64 was far from optimized - even ERMS was poorly introduced in latest RTL, since it should be triggered only for blocks > 2KB. Sadly, Delphi doesn't support AVX assembly yet, so those opcodes would be available only on FPC.

Resulting numbers are talking by themselves. Working on Win64 and Linux, of course.

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2019-10-17

Nice introductory articles about mORMot

I just found some very nice articles by Stephan Bester about first steps to mORMot's ORM and SOA.

Don't be scared by the mORMot: it is more stressed than you are.
This painful picture just won a wildlife photographer prize... poor little rodent!

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2019-09-21

SQLite3 static linking for Delphi Win64

A long-awaited feature was the ability to create stand-alone mORMot Win64 applications via Delphi, with no external sqlite3-64.dll required.

It is now available, with proper integration, and encryption is working!

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2019-09-18

Introducing Kingdom Driven Design at EKON 23

There are still some days to join EKON 23 conferences with the reduced price!

I will make 2 sessions, and 1 workshop, in English (my German is not good enough), about practical project design and mORMot.
If you find DDD is a bit too much for you, but still want to write clean code, check this!

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2018-11-12

EKON 22 Slides and Code

I've uploaded two sets of slides from my presentations at EKON 22 : Object Pascal Clean Code Guidelines Proposal High Performance Object Pascal Code on Servers with the associated source code The WorkShop about "Getting REST with mORMot" has a corresponding new Samples folder in our  […]

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2018-03-12

New AES-based SQLite3 encryption

We just committed a deep refactoring of the SynSQlite3Static.pas unit - and all units using static linking for FPC. It also includes a new encryption format for SQlite3, using AES, so much more secure than the previous one. This is a breaking change, so worth a blog article! Now all static .o .a  […]

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2018-02-07

Status of mORMot ORM SOA MVC with FPC

In the last weeks/months, we worked a lot with FPC.
Delphi is still our main IDE, due to its better debugging experience under Windows, but we target to have premium support of FPC, on all platforms, especially Linux.

The new Delphi Linux compiler is out of scope, since it is heavily priced, its performance is not so good, and ARC broke memory management so would need a deep review/rewrite of our source code, which we can't afford - since we have FPC which is, from our opinion,  a much better compiler for Linux.
Of course, you can create clients for Delphi Linux and FMX, as usual, using the cross-platform client parts of mORMot. But for server side, this compiler is not supported, and will probably never be.

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2017-11-11

Job Opportunities at LiveMon

You like working with mORMot ? We're hiring new developers at LiveMon.  We're a full-remote team (with a monthly gather-up in Paris), working on a real-time AI-powered monitoring tool. I joined LiveMon this week, and we will work together on this exciting project, using mORMot and FPC! Contact us at  […]

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2017-10-24

EKON 21 Slides

After having enjoyed EKON 21 conferences in Köln, some quick post to share material about my presentations. MicroServices: SOLID Meets SOA MicroServices: Event-Driven Design Practical Domain-Driven Design I also included the "Practical DDD" source code in a new sample folder of the mORMot  […]

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2017-08-10

Faster and cross-platform SynLZ

You probably know about our SynLZ compression unit, in pascal and x86 asm, which is very fast for compression with a good compression ratio, and proudly compete with LZ4 or Snappy. It is used in our framework everywhere, e.g. for WebSockets communication, for ECC encrypted file content, or to  […]

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2017-03-22

Delphi 10.2 Tokyo Compatibility: DCC64 broken

We are proud to announce compatibility of our mORMot Open Source framework with the latest Delphi 10.2 Tokyo compiler...
At least for Win32.

For Win64, the compiler was stuck at the end of the compilation, burning 100% of one CPU core...

A bit disappointing, isn't it?

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2017-03-18

Application Locking using Asymmetric Encryption

A common feature request for professional software is to prevent abuse of published applications.
For licensing or security reasons, you may be requested to "lock" the execution of programs, maybe tools or services.

Our Open-Souce mORMot framework can leverage Asymmetric Cryptography to ensure that only allowed users could run some executables, optionally with dedicated settings, on a given computer.
It offers the first brick on which you may build your own system upon.

From the User point of view, he/she will transmit a user@host.public file, then receives a corresponding user@host.unlock file, which will unlock the application.
Pretty easy to understand - even if some complex asymmetric encryption is involved behind the scene.

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2016-12-19

JSON Web Tokens (JWT)

JSON Web Token (JWT) is an open standard (RFC 7519) that defines a compact and self-contained way for securely transmitting information between parties as a JSON object. This information can be verified and trusted because it is digitally signed. JWTs can be signed using a secret (with the HMAC algorithm) or a public/private key pair using RSA or ECDSA.

They can be used for:

  • Authentication: including a JWT to any HTTP request allows Single Sign On user validation across different domains;
  • Secure Information Exchange: a small amount of data can be stored in the JWT payload, and is digitally signed to ensure its provenance and integrity.

See http://jwt.io for an introduction to JSON Web Tokens.

Our mORMot framework now implements JWT:

  • HS256 (HMAC-SHA256) and ES256 (256-bit ECDSA) algorithms (with the addition of the "none" weak algo);
  • Validates all claims (validation dates, audiences, JWT ID);
  • Thread-safe and high performance (2 µs for a HS256 verification under x64), with optional in-memory cache if needed (e.g. for slower ES256);
  • Stand-alone and cross-platform code (no external dll, works with Delphi or FPC);
  • Enhanced security and strong design - per instance, it is by design immune from https://auth0.com/blog/2015/03/31/critical-vulnerabilities-in-json-web-token-libraries
  • Full integration with the framework.

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2016-11-10

EKON20 mORMot Conferences

EKON20 is now over, and there was a lot of people, great speakers, beautiful T-Shirt, and fresh beer! I've published the slides of my mORMot conferences on SlideShare... EKON20 From RAD to SOA with mORMot EKON20 mORMot Legacy Code Technical Debt Delphi Conference EKON20 Ride a mORMot EKON20 2016  […]

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