Trait CategoryString 

pub trait CategoryString: Copy {
    // Required methods
    fn register(&self, context: &Context) -> trace_string_ref_t;
    fn acquire_context(&self) -> Option<TraceCategoryContext>;
    fn acquire_context_cached(
        &self,
        site: &trace_site_t,
    ) -> Option<TraceCategoryContext>;
    fn is_category_enabled(&self) -> bool;
}

Required Methods

fn register(&self, context: &Context) -> trace_string_ref_t

Registers self as with the provided context and returns a string ref for it.

fn acquire_context(&self) -> Option<TraceCategoryContext>

Acquires a context for the category named by self if the category is enabled, returning None otherwise.

fn acquire_context_cached( &self, site: &trace_site_t, ) -> Option<TraceCategoryContext>

Same as acquire_context, but uses the additional site parameter to cache the result.

fn is_category_enabled(&self) -> bool

Returns true if the category named by self is enabled.

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.

Implementations on Foreign Types

impl CategoryString for &'static str

Available on fuchsia_api_level_at_least=27 only.

fn register(&self, context: &Context) -> trace_string_ref_t

fn acquire_context(&self) -> Option<TraceCategoryContext>

fn acquire_context_cached( &self, site: &trace_site_t, ) -> Option<TraceCategoryContext>

fn is_category_enabled(&self) -> bool

impl CategoryString for &'static CStr

fn register(&self, context: &Context) -> trace_string_ref_t

fn acquire_context(&self) -> Option<TraceCategoryContext>

fn acquire_context_cached( &self, site: &trace_site_t, ) -> Option<TraceCategoryContext>

fn is_category_enabled(&self) -> bool

Implementors