cpu/kvm/timer.hh

50  * simulation ticks. The timer allows scaling of the host time to take
58  * When the timer times out, it sends a signal to the thread that
59  * started the timer. The signal forces KVM to drop out of the system
66      * Setup basic timer functionality shared by all timer
79      * Arm the timer so that it fires after a certain number of ticks.
81      * @note A timer implementation is free to convert between
83      * chooses. The accuracy of the timer therefore depends on what it
84      * measures, an accurate timer implementation should measure the
88      * @param ticks Number of ticks until the timer fires
92      * Disarm the timer.
94      * When this method has returned, the timer may no longer deliver
100      * Determine the resolution of the timer in ticks. This method is
101      * mainly used to determine the smallest number of ticks the timer
104      * @return Minimum number of ticks the timer can resolve
136      * Calculate the timer resolution, used by resolution() which
139      * @return Minimum number of ticks the timer can resolve
162     /** Signal to deliver when the timer times out */
176  * Timer based on standard POSIX timers. The POSIX timer API supports
204     timer_t timer;
208  * PerfEvent based timer using the host's CPU cycle counter.
212  * reliably, which might break this timer. See PerfKvmCounter::period()
219      * Create a timer that uses an existing hardware cycle counter.