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chardev/mux: switch mux frontends management to bitset

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Frontends can be attached and detached during run-time (although detach
is not implemented, but will follow). Counter variable of muxes is not
enough for proper attach/detach management, so this patch implements
bitset: if bit is set for the `mux_bitset` variable, then frontend
device can be found in the `backend` array (yes, huge confusion with
backend and frontends names).

Signed-off-by: Roman Penyaev <r.peniaev@gmail.com>
Cc: "Marc-André Lureau" <marcandre.lureau@redhat.com>
Cc: qemu-devel@nongnu.org
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-ID: <20241014152408.427700-7-r.peniaev@gmail.com>
This commit is contained in:
Roman Penyaev 2024-10-14 17:24:06 +02:00 • committed by Marc-André Lureau
parent 709a4cabfb
commit 005b6d511f
3 changed files with 30 additions and 16 deletions
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2
chardev/chardev-internal.h
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@ -37,8 +37,8 @@ struct MuxChardev {
Chardev parent;
CharBackend *backends[MAX_MUX];
CharBackend chr;
unsigned long mux_bitset;
int focus;
unsigned int mux_cnt;
bool term_got_escape;
/* Intermediate input buffer catches escape sequences even if the
currently active device is not accepting any input - but only until it