26 lines
947 B
Rust
26 lines
947 B
Rust
use types::bounded::CapSlot;
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const SHUTDOWN_TIMEOUT_TICKS: usize = 50_000_000;
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const SHUTDOWN_SIGNAL: usize = 0xFFFF_FFFF;
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/// Best-effort shutdown: notify all servers, wait briefly for them to flush, then halt.
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///
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/// Servers that receive the shutdown signal should flush state to storage and exit.
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/// We can't block on individual acks because a crashed server would deadlock us.
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/// Instead, we yield repeatedly until the timeout expires, giving servers time to finish.
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pub fn shutdown(server_endpoints: &[CapSlot], endpoint_count: usize) -> ! {
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for i in 0..endpoint_count {
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let ep = server_endpoints[i].value() as usize;
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userspace::syscall::send(ep, SHUTDOWN_SIGNAL, 0, 0, 0);
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}
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let start = userspace::syscall::get_time();
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let deadline = start + SHUTDOWN_TIMEOUT_TICKS;
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while userspace::syscall::get_time() < deadline {
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userspace::syscall::yield_now();
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}
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userspace::syscall::halt();
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}
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