Crate rustc_incremental
source ·Expand description
Support for serializing the dep-graph and reloading it.
Modules
- This pass is only used for the UNIT TESTS and DEBUGGING NEEDS around dependency graph construction. It serves two purposes; it will dump graphs in graphviz form to disk, and it searches for
#[rustc_if_this_changed]
and#[rustc_then_this_would_need]
annotations. These annotations can be used to test whether paths exist in the graph. These checks run after codegen, so they view the the final state of the dependency graph. Note that there are similar assertions found inpersist::dirty_clean
which check the initial state of the dependency graph, just after it has been loaded from disk. - This pass is only used for UNIT TESTS related to incremental compilation. It tests whether a particular
.o
file will be re-used from a previous compilation or whether it must be regenerated. - errors 🔒
- persist 🔒When in incremental mode, this pass dumps out the dependency graph into the given directory. At the same time, it also hashes the various HIR nodes.
Enums
- Represents the result of an attempt to load incremental compilation data.
Statics
- Raw content of Fluent resource for this crate, generated by
fluent_messages
macro, imported byrustc_driver
to include all crates’ resources in one bundle.
Functions
- Copies a CGU work product to the incremental compilation directory, so next compilation can find and reuse it.
- Removes files for a given work product.
- This function finalizes and thus ‘publishes’ the session directory by renaming it to
s-{timestamp}-{svh}
and releasing the file lock. If there have been compilation errors, however, this function will just delete the presumably invalid session directory. - Runs garbage collection for the current session.
- Returns the path for a given filename within the incremental compilation directory, not necessarily from the current session.
- Returns the path for a given filename within the incremental compilation directory in the current session.
- Attempts to load the query result cache from disk
- Allocates the private session directory.
- Saves and writes the
DepGraph
to the file system. - Saves the work product index.
- Setups the dependency graph by loading an existing graph from disk and set up streaming of a new graph to an incremental session directory.