pub struct CachedOnDiskCorpus<I>
where I: Input,
{ /* private fields */ }
Expand description

A corpus that keeps a maximum number of Testcases in memory and load them from disk, when they are being used. The eviction policy is FIFO.

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impl<I> CachedOnDiskCorpus<I>
where I: Input,

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pub fn new<P>(dir_path: P, cache_max_len: usize) -> Result<Self, Error>
where P: AsRef<Path>,

Creates the CachedOnDiskCorpus.

This corpus stores (and reads) all testcases to/from disk

By default, it stores metadata for each Testcase as prettified json. Metadata will be written to a file named .<testcase>.metadata the metadata may include objective reason, specific information for a fuzz job, and more.

If you don’t want metadata, use CachedOnDiskCorpus::no_meta. to pick a different metadata format, use CachedOnDiskCorpus::with_meta_format.

Will error, if std::fs::create_dir_all() failed for dir_path.

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pub fn no_meta<P>(dir_path: P, cache_max_len: usize) -> Result<Self, Error>
where P: AsRef<Path>,

Creates an CachedOnDiskCorpus that does not store Testcase metadata to disk.

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pub fn with_meta_format<P>( dir_path: P, cache_max_len: usize, meta_format: Option<OnDiskMetadataFormat> ) -> Result<Self, Error>
where P: AsRef<Path>,

Creates the CachedOnDiskCorpus specifying the format in which Metadata will be saved to disk.

Will error, if std::fs::create_dir_all() failed for dir_path.

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pub fn with_meta_format_and_prefix<P>( dir_path: P, cache_max_len: usize, meta_format: Option<OnDiskMetadataFormat>, prefix: Option<String>, locking: bool ) -> Result<Self, Error>
where P: AsRef<Path>,

Creates the CachedOnDiskCorpus specifying the metadata format and the prefix to prepend to each testcase.

Will error, if std::fs::create_dir_all() failed for dir_path.

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pub fn inner(&self) -> &InMemoryOnDiskCorpus<I>

Fetch the inner corpus

Trait Implementations§

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impl<I> Clone for CachedOnDiskCorpus<I>
where I: Input + Clone,

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fn clone(&self) -> CachedOnDiskCorpus<I>

Returns a copy of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl<I> Corpus for CachedOnDiskCorpus<I>
where I: Input,

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fn count(&self) -> usize

Returns the number of elements

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fn add(&mut self, testcase: Testcase<I>) -> Result<CorpusId, Error>

Add an entry to the corpus and return its index

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fn replace( &mut self, idx: CorpusId, testcase: Testcase<I> ) -> Result<Testcase<I>, Error>

Replaces the testcase at the given idx

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fn remove(&mut self, idx: CorpusId) -> Result<Testcase<I>, Error>

Removes an entry from the corpus, returning it if it was present.

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fn get(&self, idx: CorpusId) -> Result<&RefCell<Testcase<I>>, Error>

Get by id

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fn current(&self) -> &Option<CorpusId>

Current testcase scheduled

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fn current_mut(&mut self) -> &mut Option<CorpusId>

Current testcase scheduled (mutable)

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fn next(&self, idx: CorpusId) -> Option<CorpusId>

Get the next corpus id
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fn prev(&self, idx: CorpusId) -> Option<CorpusId>

Get the prev corpus id
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fn first(&self) -> Option<CorpusId>

Get the first inserted corpus id
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fn last(&self) -> Option<CorpusId>

Get the last inserted corpus id
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fn nth(&self, nth: usize) -> CorpusId

Get the nth corpus id
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fn load_input_into( &self, testcase: &mut Testcase<Self::Input> ) -> Result<(), Error>

Method to load the input for this Testcase from persistent storage, if necessary, and if was not already loaded (== Some(input)). After this call, testcase.input() must always return Some(input).
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fn store_input_from( &self, testcase: &Testcase<Self::Input> ) -> Result<(), Error>

Method to store the input of this Testcase to persistent storage, if necessary.
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fn is_empty(&self) -> bool

Returns true, if no elements are in this corpus yet
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fn ids(&self) -> CorpusIdIterator<'_, Self>

An iterator over very active corpus id
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fn cloned_input_for_id(&self, idx: CorpusId) -> Result<Self::Input, Error>

Loads the Input for a given CorpusId from the Corpus, and returns the clone.
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impl<I> Debug for CachedOnDiskCorpus<I>
where I: Input + Debug,

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

Formats the value using the given formatter. Read more
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impl<I> Default for CachedOnDiskCorpus<I>
where I: Input + Default,

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fn default() -> CachedOnDiskCorpus<I>

Returns the “default value” for a type. Read more
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impl<'de, I> Deserialize<'de> for CachedOnDiskCorpus<I>

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fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>
where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer. Read more
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impl<I> HasTestcase for CachedOnDiskCorpus<I>
where I: Input,

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fn testcase( &self, id: CorpusId ) -> Result<Ref<'_, Testcase<Self::Input>>, Error>

Shorthand to receive a Ref to a stored Testcase, by CorpusId. For a normal state, this should return a Testcase in the corpus, not the objectives.
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fn testcase_mut( &self, id: CorpusId ) -> Result<RefMut<'_, Testcase<Self::Input>>, Error>

Shorthand to receive a RefMut to a stored Testcase, by CorpusId. For a normal state, this should return a Testcase in the corpus, not the objectives.
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impl<I> Serialize for CachedOnDiskCorpus<I>

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fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>
where __S: Serializer,

Serialize this value into the given Serde serializer. Read more
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impl<I> UsesInput for CachedOnDiskCorpus<I>
where I: Input,

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type Input = I

Type which will be used throughout this state.

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