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Tsirkin" , Andrew Jeffery , Peter Maydell , Joel Stanley , Bernhard Beschow Subject: [PATCH v2 03/13] util/fifo8: Make all read-only methods const-correct Date: Tue, 3 Mar 2026 23:21:33 +0100 Message-ID: <20260303222143.142741-4-shentey@gmail.com> X-Mailer: git-send-email 2.53.0 In-Reply-To: <20260303222143.142741-1-shentey@gmail.com> References: <20260303222143.142741-1-shentey@gmail.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2a00:1450:4864:20::32a; envelope-from=shentey@gmail.com; helo=mail-wm1-x32a.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, FREEMAIL_FROM=0.001, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=unavailable autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: qemu development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @gmail.com) X-ZM-MESSAGEID: 1772576595925158500 Content-Type: text/plain; charset="utf-8" Allows these methods to be used in const contexts, i.e. where the parent of the fifo itself is const. This is in particular useful for Rust code. Signed-off-by: Bernhard Beschow Reviewed-by: Peter Maydell --- include/qemu/fifo8.h | 10 +++++----- util/fifo8.c | 10 +++++----- 2 files changed, 10 insertions(+), 10 deletions(-) diff --git a/include/qemu/fifo8.h b/include/qemu/fifo8.h index 4f768d4ee3..6b476b404e 100644 --- a/include/qemu/fifo8.h +++ b/include/qemu/fifo8.h @@ -71,7 +71,7 @@ uint8_t fifo8_pop(Fifo8 *fifo); * * Returns: The peeked data byte. */ -uint8_t fifo8_peek(Fifo8 *fifo); +uint8_t fifo8_peek(const Fifo8 *fifo); =20 /** * fifo8_pop_buf: @@ -181,7 +181,7 @@ void fifo8_reset(Fifo8 *fifo); * * Returns: True if the fifo is empty, false otherwise. */ -bool fifo8_is_empty(Fifo8 *fifo); +bool fifo8_is_empty(const Fifo8 *fifo); =20 /** * fifo8_is_full: @@ -191,7 +191,7 @@ bool fifo8_is_empty(Fifo8 *fifo); * * Returns: True if the fifo is full, false otherwise. */ -bool fifo8_is_full(Fifo8 *fifo); +bool fifo8_is_full(const Fifo8 *fifo); =20 /** * fifo8_num_free: @@ -201,7 +201,7 @@ bool fifo8_is_full(Fifo8 *fifo); * * Returns: Number of free bytes. */ -uint32_t fifo8_num_free(Fifo8 *fifo); +uint32_t fifo8_num_free(const Fifo8 *fifo); =20 /** * fifo8_num_used: @@ -211,7 +211,7 @@ uint32_t fifo8_num_free(Fifo8 *fifo); * * Returns: Number of used bytes. */ -uint32_t fifo8_num_used(Fifo8 *fifo); +uint32_t fifo8_num_used(const Fifo8 *fifo); =20 extern const VMStateDescription vmstate_fifo8; =20 diff --git a/util/fifo8.c b/util/fifo8.c index a26da66ad2..cc4f590b7a 100644 --- a/util/fifo8.c +++ b/util/fifo8.c @@ -71,7 +71,7 @@ uint8_t fifo8_pop(Fifo8 *fifo) return ret; } =20 -uint8_t fifo8_peek(Fifo8 *fifo) +uint8_t fifo8_peek(const Fifo8 *fifo) { assert(fifo->num > 0); return fifo->data[fifo->head]; @@ -157,22 +157,22 @@ void fifo8_drop(Fifo8 *fifo, uint32_t len) assert(len =3D=3D 0); } =20 -bool fifo8_is_empty(Fifo8 *fifo) +bool fifo8_is_empty(const Fifo8 *fifo) { return (fifo->num =3D=3D 0); } =20 -bool fifo8_is_full(Fifo8 *fifo) +bool fifo8_is_full(const Fifo8 *fifo) { return (fifo->num =3D=3D fifo->capacity); } =20 -uint32_t fifo8_num_free(Fifo8 *fifo) +uint32_t fifo8_num_free(const Fifo8 *fifo) { return fifo->capacity - fifo->num; } =20 -uint32_t fifo8_num_used(Fifo8 *fifo) +uint32_t fifo8_num_used(const Fifo8 *fifo) { return fifo->num; } --=20 2.53.0