diff options
Diffstat (limited to 'include/qemu/qemu-plugin.h')
| -rw-r--r-- | include/qemu/qemu-plugin.h | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/include/qemu/qemu-plugin.h b/include/qemu/qemu-plugin.h index 95703d8..c71c705 100644 --- a/include/qemu/qemu-plugin.h +++ b/include/qemu/qemu-plugin.h @@ -661,6 +661,33 @@ void qemu_plugin_register_vcpu_mem_inline_per_vcpu( qemu_plugin_u64 entry, uint64_t imm); +/** + * qemu_plugin_request_time_control() - request the ability to control time + * + * This grants the plugin the ability to control system time. Only one + * plugin can control time so if multiple plugins request the ability + * all but the first will fail. + * + * Returns an opaque handle or NULL if fails + */ +QEMU_PLUGIN_API +const void *qemu_plugin_request_time_control(void); + +/** + * qemu_plugin_update_ns() - update system emulation time + * @handle: opaque handle returned by qemu_plugin_request_time_control() + * @time: time in nanoseconds + * + * This allows an appropriately authorised plugin (i.e. holding the + * time control handle) to move system time forward to @time. For + * user-mode emulation the time is not changed by this as all reported + * time comes from the host kernel. + * + * Start time is 0. + */ +QEMU_PLUGIN_API +void qemu_plugin_update_ns(const void *handle, int64_t time); + typedef void (*qemu_plugin_vcpu_syscall_cb_t)(qemu_plugin_id_t id, unsigned int vcpu_index, int64_t num, uint64_t a1, uint64_t a2, |