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[93.143.80.194]) by smtp.googlemail.com with ESMTPSA id 5b1f17b1804b1-486f420de8asm56471095e9.3.2026.03.18.03.46.59 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 18 Mar 2026 03:47:00 -0700 (PDT) From: Ruslan Ruslichenko To: qemu-devel@nongnu.org Cc: qemu-arm@nongnu.org, artem_mygaiev@epam.com, volodymyr_babchuk@epam.com, alex.bennee@linaro.org, peter.maydell@linaro.org, pierrick.bouvier@linaro.org, philmd@linaro.org, Ruslan_Ruslichenko@epam.com Subject: [RFC PATCH 2/9] plugins/api: Expose virtual clock timers to plugins Date: Wed, 18 Mar 2026 11:46:33 +0100 Message-ID: <20260318104640.239752-3-ruslichenko.r@gmail.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20260318104640.239752-1-ruslichenko.r@gmail.com> References: <20260318104640.239752-1-ruslichenko.r@gmail.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Received-SPF: pass client-ip=2a00:1450:4864:20::334; envelope-from=ruslichenko.r@gmail.com; helo=mail-wm1-x334.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-arm@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-arm-bounces+qemu-arm=archiver.kernel.org@nongnu.org Sender: qemu-arm-bounces+qemu-arm=archiver.kernel.org@nongnu.org From: Ruslan Ruslichenko This patch extends QEMU Plugins API to allow set timers in guest's virtual clock (QEMU_CLOCK_VIRTUAL). It introduces qemu_plugin_timer_virt_ns(), which allows scheduling a one-shot callback. The patch also adds qemu_plugin_get_virtual_clock_ns(), which can be used to query the current virtual time. Signed-off-by: Ruslan Ruslichenko --- include/plugins/qemu-plugin.h | 6 ++++++ plugins/api.c | 29 +++++++++++++++++++++++++++++ 2 files changed, 35 insertions(+) diff --git a/include/plugins/qemu-plugin.h b/include/plugins/qemu-plugin.h index 17a834dca9..bbd21e79c5 100644 --- a/include/plugins/qemu-plugin.h +++ b/include/plugins/qemu-plugin.h @@ -1246,6 +1246,12 @@ void qemu_plugin_u64_set(qemu_plugin_u64 entry, unsigned int vcpu_index, QEMU_PLUGIN_API uint64_t qemu_plugin_u64_sum(qemu_plugin_u64 entry); +QEMU_PLUGIN_API +uint64_t qemu_plugin_get_virtual_clock_ns(void); + +QEMU_PLUGIN_API +void qemu_plugin_timer_virt_ns(uint64_t time, void (*cb)(void*), void *opaque); + #ifdef __cplusplus } /* extern "C" */ #endif diff --git a/plugins/api.c b/plugins/api.c index 04ca7da7f1..609ea69293 100644 --- a/plugins/api.c +++ b/plugins/api.c @@ -39,6 +39,7 @@ #include "qemu/main-loop.h" #include "qemu/plugin.h" #include "qemu/log.h" +#include "qemu/timer.h" #include "system/memory.h" #include "tcg/tcg.h" #include "exec/gdbstub.h" @@ -652,3 +653,31 @@ uint64_t qemu_plugin_u64_sum(qemu_plugin_u64 entry) return total; } +typedef struct { + void (*cb)(void *opaque); + void* opaque; + QEMUTimer *timer; +} qemu_plugin_timer_data; + +static void timer_cb(void* opaque) +{ + qemu_plugin_timer_data *data = (qemu_plugin_timer_data*)opaque; + + data->cb(data->opaque); + + timer_free(data->timer); + g_free(data); +} + +QEMU_PLUGIN_API +void qemu_plugin_timer_virt_ns(uint64_t time, void (*cb)(void*), void *opaque) +{ + qemu_plugin_timer_data* data = g_new0(qemu_plugin_timer_data, 1); + + data->cb = cb; + data->opaque = opaque; + + data->timer = timer_new_ns(QEMU_CLOCK_VIRTUAL, timer_cb, data); + + timer_mod(data->timer, time); +} -- 2.43.0