[−][src]Crate rustc_incremental

Support for serializing the dep-graph and reloading it.

Modules

assert_dep_graph	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 in `persist::dirty_clean` which check the initial state of the dependency graph, just after it has been loaded from disk.
assert_module_sources	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.
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.

assert_dep_graph
copy_cgu_workproduct_to_incr_comp_cache_dir
delete_workproduct_files
dep_graph_tcx_init
finalize_session_directory	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.
garbage_collect_session_directories
in_incr_comp_dir
in_incr_comp_dir_sess
load_dep_graph	Launch a thread and load the dependency graph in the background.
load_query_result_cache
prepare_session_directory	Allocates the private session directory. The boolean in the Ok() result indicates whether we should try loading a dep graph from the successfully initialized directory, or not. The post-condition of this fn is that we have a valid incremental compilation session directory, if the result is `Ok`. A valid session directory is one that contains a locked lock file. It may or may not contain a dep-graph and work products from a previous session. If the call fails, the fn may leave behind an invalid session directory. The garbage collection will take care of it.
save_dep_graph
save_work_product_index