Overview of changes in Sysprof 45.beta
=======================================

Sysprof has largely been redesigned and rewriten from the ground up this cycle
to provide better GTK 4 integration and more advanced features.

libsysprof-capture
------------------

This library is our static library used by many applications and libraries to
augment capture collection. It is still installed as libsysprof-capture-4.a
as a static library for consumers. The ABI is the same, however some new data
types have been added.

libsysprof
----------

This library has been rewritten around a new document model for captures.
Instead of using SysprofCaptureReader (a buffered capture reader) the
SysprofDocument object exposes a GListModel of a mmap()'d capture file.

This has allowed for many new indexing performance improvements as well
as simpler data-binding in the user interface.

You can read more about this at
https://blogs.gnome.org/chergert/2023/07/18/glistmodel-as-a-data-format/

Additionally, a new SysprofProfiler API has been added. It has been much
simplified and allows for easier implementation of instruments in a race
free manner.

The library heavily builds upon libdex for Futures which I created this past
window to simplify features in GNOME Builder.

sysprof-cli and sysprof-agent
-----------------------------

These tools both provide similar features albeit from a different standpoint.
They have both been updated to use the new profiler interface in libsysprof.

sysprofd
--------

Very minimal changes have been made to sysprofd to help ensure that the
application and libraries can still work on systems with an older sysprofd
installed on the host.

sysprof
-------

The application has been completely redesigned and is now window focused
rather than tabs. The constraint of tabs was becoming too cumbersome to
maintain so as the author, I felt this was the right move.

Howto and More
--------------

I wrote a series of blog posts on how to use Sysprof which you might
find useful.

https://blogs.gnome.org/chergert/2023/07/28/how-to-use-sysprof-again/
https://blogs.gnome.org/chergert/2023/08/04/more-sysprofing/

You can see an overview of the new features here:

https://blogs.gnome.org/chergert/2023/07/27/sysprof-45/