From: Ruslan Ruslichenko <[email protected]> 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 <[email protected]> --- 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
