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//! Misc functions that do not exactly fit into other categories.
use crate::gpu_only;
/// Suspends execution of the kernel, usually to pause at a specific point when debugging in a debugger.
#[gpu_only]
#[inline(always)]
pub fn breakpoint() {
unsafe {
asm!("brkpt");
}
}
/// Increments a hardware counter between `0` and `7` (inclusive).
/// This function will increment the counter by one per warp.
///
/// # Panics
///
/// Panics if `counter` is not in the range of `0..=7`.
#[gpu_only]
#[inline(always)]
pub fn profiler_counter(counter: u32) {
assert!(
(0..=7).contains(&counter),
"Profiler counter value must be in the range of 0..=7"
);
unsafe {
asm!(
"pmevent {}",
in(reg32) counter
)
}
}
/// Returns the value of a per-multiprocessor counter incremented on every clock cycle.
#[gpu_only]
#[inline(always)]
pub fn clock() -> u64 {
let mut clock;
unsafe {
asm!(
"mov.u64 {}, %clock64",
out(reg64) clock
)
}
clock
}