Struct DepthLock 

pub struct DepthLock<'a> { /* private fields */ }

Depth lock holds a reference on the depth gauge. The drop ensures impl that the reference is decremented even if there is a panic unwind.

Implementations

impl<'a> DepthLock<'a>

pub fn obtain(depth_gauge: &'a DepthGauge) -> Result<DepthLock<'a>, Error>

The depth lock tests if the depth can increment and then obtains a lock on it. The lock will decrement the depth when it drops to ensure proper behaviour during unwinding.

Trait Implementations

impl<'a> Debug for DepthLock<'a>

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Drop for DepthLock<'_>

fn drop(&mut self)

Executes the destructor for this type.