tree 4166769651c09a508fe3aa925073970f9f78a203
parent 750a0389780c9eff49e1ede7647e28949b1996b7
author Googler <lberki@google.com> 1712821080 -0700
committer Copybara-Service <copybara-worker@google.com> 1712821175 -0700

Implement a "transitive" mode for memory dumping.

It dumps every object in the Skyframe transitive closure of a SkyValue.

Currently, it's very inefficient for multiple reasons:

* ConcurrentIdentitySet is slow when accessed from many threads. It should be sharded.
* MemoryAccountant cannot be accessed concurrently, so it's protected with a monitor. We should collect the numbers separately for each SkyValue and merge them later.

But at least the implementation of processTransitive() is pretty neat -- mirroring the Skyframe graph with a graph of CompletableFuture instances.

RELNOTES: None.
PiperOrigin-RevId: 623734658
Change-Id: I2eb43ac1ad30a831d1ffb524bc0f4352e3fe7872