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use core::cell::Cell;
use crate::callback::AppId;
use crate::capabilities::ProcessManagementCapability;
use crate::common::cells::NumericCellExt;
use crate::process;
use crate::sched::Kernel;
pub struct KernelInfo {
kernel: &'static Kernel,
}
impl KernelInfo {
pub fn new(kernel: &'static Kernel) -> KernelInfo {
KernelInfo { kernel: kernel }
}
pub fn number_loaded_processes(&self, _capability: &dyn ProcessManagementCapability) -> usize {
let count: Cell<usize> = Cell::new(0);
self.kernel.process_each(|_| count.increment());
count.get()
}
pub fn number_active_processes(&self, _capability: &dyn ProcessManagementCapability) -> usize {
let count: Cell<usize> = Cell::new(0);
self.kernel
.process_each(|process| match process.get_state() {
process::State::Running => count.increment(),
process::State::Yielded => count.increment(),
_ => {}
});
count.get()
}
pub fn number_inactive_processes(
&self,
_capability: &dyn ProcessManagementCapability,
) -> usize {
let count: Cell<usize> = Cell::new(0);
self.kernel
.process_each(|process| match process.get_state() {
process::State::Running => {}
process::State::Yielded => {}
_ => count.increment(),
});
count.get()
}
pub fn process_name(
&self,
app: AppId,
_capability: &dyn ProcessManagementCapability,
) -> &'static str {
self.kernel
.process_map_or("unknown", app, |process| process.get_process_name())
}
pub fn number_app_syscalls(
&self,
app: AppId,
_capability: &dyn ProcessManagementCapability,
) -> usize {
self.kernel
.process_map_or(0, app, |process| process.debug_syscall_count())
}
pub fn number_app_dropped_callbacks(
&self,
app: AppId,
_capability: &dyn ProcessManagementCapability,
) -> usize {
self.kernel
.process_map_or(0, app, |process| process.debug_dropped_callback_count())
}
pub fn number_app_restarts(
&self,
app: AppId,
_capability: &dyn ProcessManagementCapability,
) -> usize {
self.kernel
.process_map_or(0, app, |process| process.get_restart_count())
}
pub fn number_app_timeslice_expirations(
&self,
app: AppId,
_capability: &dyn ProcessManagementCapability,
) -> usize {
self.kernel
.process_map_or(0, app, |process| process.debug_timeslice_expiration_count())
}
pub fn number_app_grant_uses(
&self,
app: AppId,
_capability: &dyn ProcessManagementCapability,
) -> (usize, usize) {
let number_of_grants = self.kernel.get_grant_count_and_finalize();
let mut used = 0;
self.kernel.process_map_or((), app, |process| {
for i in 0..number_of_grants {
if let Some(grant_ptr) = process.get_grant_ptr(i) {
if !(grant_ptr.is_null()) {
used += 1;
}
}
}
});
(used, number_of_grants)
}
pub fn timeslice_expirations(&self, _capability: &dyn ProcessManagementCapability) -> usize {
let count: Cell<usize> = Cell::new(0);
self.kernel.process_each(|proc| {
count.add(proc.debug_timeslice_expiration_count());
});
count.get()
}
}