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add comment on profiler

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This commit is contained in:
Corwin 2022-03-22 22:08:59 +00:00
parent ac9826c4d7
commit adffcc6773
1 changed files with 8 additions and 0 deletions
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8
agb/src/interrupt.rs
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@ -362,6 +362,14 @@ mod tests {
} }
#[must_use] #[must_use]
/// The behaviour of this function is undefined in the sense that it will output
/// some information in some way that can be interpreted in a way to give some
/// profiling information. What it outputs, how it outputs it, and how to
/// interpret it are all subject to change at any time.
///
/// With that out of the way, the current version will, in mgba, output the
/// program counter at regular intervals. This can be used to see hot functions
/// using, for example, addr2line.
pub fn profiler(timer: &mut crate::timer::Timer, period: u16) -> InterruptHandler { pub fn profiler(timer: &mut crate::timer::Timer, period: u16) -> InterruptHandler {
timer.set_interrupt(true); timer.set_interrupt(true);
timer.set_overflow_amount(period); timer.set_overflow_amount(period);