#[non_exhaustive]
pub enum DebugLevel {
    None,
    Error,
    Warning,
    Fixme,
    Info,
    Debug,
    Log,
    Trace,
    Memdump,
    Count,
    // some variants omitted
}
Expand description

The level defines the importance of a debugging message. The more important a message is, the greater the probability that the debugging system outputs it.

Variants (Non-exhaustive)

This enum is marked as non-exhaustive
Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

None

No debugging level specified or desired. Used to deactivate debugging output.

Error

Error messages are to be used only when an error occurred that stops the application from keeping working correctly. An examples is gst_element_error, which outputs a message with this priority. It does not mean that the application is terminating as with g_error.

Warning

Warning messages are to inform about abnormal behaviour that could lead to problems or weird behaviour later on. An example of this would be clocking issues (“your computer is pretty slow”) or broken input data (“Can’t synchronize to stream.”)

Fixme

Fixme messages are messages that indicate that something in the executed code path is not fully implemented or handled yet. Note that this does not replace proper error handling in any way, the purpose of this message is to make it easier to spot incomplete/unfinished pieces of code when reading the debug log.

Info

Informational messages should be used to keep the developer updated about what is happening. Examples where this should be used are when a typefind function has successfully determined the type of the stream or when an mp3 plugin detects the format to be used. (“This file has mono sound.”)

Debug

Debugging messages should be used when something common happens that is not the expected default behavior, or something that’s useful to know but doesn’t happen all the time (ie. per loop iteration or buffer processed or event handled). An example would be notifications about state changes or receiving/sending of events.

Log

Log messages are messages that are very common but might be useful to know. As a rule of thumb a pipeline that is running as expected should never output anything else but LOG messages whilst processing data. Use this log level to log recurring information in chain functions and loop functions, for example.

Trace

Tracing-related messages. Examples for this are referencing/dereferencing of objects.

Memdump

memory dump messages are used to log (small) chunks of data as memory dumps in the log. They will be displayed as hexdump with ASCII characters.

Count

The number of defined debugging levels.

Implementations

Trait Implementations

Returns a copy of the value. Read more

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Formats the value using the given formatter. Read more

Formats the value using the given formatter. Read more

Value type checker.

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Feeds this value into the given Hasher. Read more

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Compares and returns the maximum of two values. Read more

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This method tests for self and other values to be equal, and is used by ==. Read more

This method tests for !=.

This method returns an ordering between self and other values if one exists. Read more

This method tests less than (for self and other) and is used by the < operator. Read more

This method tests less than or equal to (for self and other) and is used by the <= operator. Read more

This method tests greater than (for self and other) and is used by the > operator. Read more

This method tests greater than or equal to (for self and other) and is used by the >= operator. Read more

Returns the type identifier of Self.

Convert a value to a Value.

Returns the type identifer of self. Read more

Type to get the Type from. Read more

Auto Trait Implementations

Blanket Implementations

Gets the TypeId of self. Read more

Immutably borrows from an owned value. Read more

Mutably borrows from an owned value. Read more

Performs the conversion.

Performs the conversion.

Ensures that the type has been registered with the type system.

The resulting type after obtaining ownership.

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🔬 This is a nightly-only experimental API. (toowned_clone_into)

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Returns a SendValue clone of self.

Converts the given value to a String. Read more

The type returned in the event of a conversion error.

Performs the conversion.

The type returned in the event of a conversion error.

Performs the conversion.