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docs: glib-adoption: split into sections

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Although all the mentioned functions deal with
allocation, replacing the pure allocation
functions is easier than converting code to
use GArrays.

Split them out to encourage usage of GLib
allocation APIs even at the cost of them
being combined with VIR_*ELEMENT APIs.

Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Andrea Bolognani <abologna@redhat.com>
This commit is contained in:
Ján Tomko 2020-09-24 13:50:49 +02:00
parent 080ab92587
commit 900e54ed2e
1 changed files with 16 additions and 9 deletions
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docs/glib-adoption.rst
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@ -14,14 +14,21 @@ the GLib APIs straight away where possible.
The following is a list of libvirt APIs that should no longer be
used in new code, and their suggested GLib replacements:
``VIR_ALLOC``, ``VIR_REALLOC``, ``VIR_RESIZE_N``, ``VIR_EXPAND_N``, ``VIR_SHRINK_N``, ``VIR_FREE``, ``VIR_APPEND_ELEMENT``, ``VIR_INSERT_ELEMENT``, ``VIR_DELETE_ELEMENT``
Memory allocation
``VIR_ALLOC``, ``VIR_REALLOC``, ``VIR_RESIZE_N``,
``VIR_EXPAND_N``, ``VIR_SHRINK_N``, ``VIR_FREE``
Prefer the GLib APIs ``g_new0``/``g_renew``/ ``g_free`` in most
cases. There should rarely be a need to use
``g_malloc``/``g_realloc``. Instead of using plain C arrays, it
is preferrable to use one of the GLib types, ``GArray``,
``GPtrArray`` or ``GByteArray``. These all use a struct to
track the array memory and size together and efficiently
resize. **NEVER MIX** use of the classic libvirt memory
allocation APIs and GLib APIs within a single method. Keep the
style consistent, converting existing code to GLib style in a
separate, prior commit.
``g_malloc``/``g_realloc``. **NEVER MIX** use of the classic
libvirt memory allocation APIs and GLib APIs within a single
method. Keep the style consistent, converting existing code to
GLib style in a separate, prior commit.
Array operations
``VIR_APPEND_ELEMENT``, ``VIR_INSERT_ELEMENT``, ``VIR_DELETE_ELEMENT``
Instead of using plain C arrays, it is preferrable to use one of
the GLib types, ``GArray``, ``GPtrArray`` or ``GByteArray``.
These all use a struct to track the array memory and size
together and efficiently resize.