8 Commits

Author SHA1 Message Date
Ben Clayton
c158e845e6 tint/utils: Add Hashmap equality and hashing
Allows Hashmaps to be used as keys to other hashmaps.

Change-Id: I557d99515451c55e599dda847e15ce8e2b4500c5
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/112282
Kokoro: Ben Clayton <bclayton@google.com>
Commit-Queue: Ben Clayton <bclayton@google.com>
Reviewed-by: Antonio Maiorano <amaiorano@google.com>
2022-11-29 20:54:06 +00:00
Ben Clayton
028092a843 tint/utils: Add Hashmap::Keys(), Hashmap::Values()
Change-Id: If51cb3f42e50db842ecd006bcfbbbd060957e650
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/112281
Commit-Queue: Ben Clayton <bclayton@google.com>
Reviewed-by: Antonio Maiorano <amaiorano@google.com>
Kokoro: Ben Clayton <bclayton@google.com>
2022-11-29 20:01:42 +00:00
Ben Clayton
05f3ebfc68 tint/utils: Make Hashmap iterator values mutable
Instead of always returning a const ref to the KeyValue, make the value
part mutable if the map is mutable.

Change-Id: I56512ba48a09300c51b1ac1ea31665a4941e2794
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/112280
Reviewed-by: Antonio Maiorano <amaiorano@google.com>
Kokoro: Kokoro <noreply+kokoro@google.com>
Commit-Queue: Ben Clayton <bclayton@google.com>
2022-11-29 19:59:08 +00:00
Ben Clayton
7c6e229a18 tint/utils: Make Hashmap::Find() safer to use
Don't return a raw pointer to the map entry's value, instead return a new Reference which re-looks up the entry if the map is mutated.

Change-Id: I031749785faeac98e2a129a776493cb0371a5cb9
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/110540
Reviewed-by: Antonio Maiorano <amaiorano@google.com>
Kokoro: Kokoro <noreply+kokoro@google.com>
Commit-Queue: Ben Clayton <bclayton@google.com>
2022-11-23 21:04:25 +00:00
Ben Clayton
e372511e1b tint/utils: Rework Hashmap / Hashset
Previously Hashmap used to internally use a Hashset which held entries
of key-value pairs. This was cute, but meant that a Hashset held mutable
entries, which was a bag-of-bugs waiting to happen (change the entry to
hash as something different and you're now in an entirely broken state).

Pull the complex bits of Hashset out to HashmapBase, and have both
derive from that. I've opted for inheritance over composition here to
reduce the amount of structure chasing you'd have to do without
debugger pretty-printers.

Change-Id: I99e72244b69206a994edabfefd0e28d5d74d08d9
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/108240
Kokoro: Kokoro <noreply+kokoro@google.com>
Commit-Queue: Ben Clayton <bclayton@google.com>
Reviewed-by: Antonio Maiorano <amaiorano@google.com>
2022-11-02 19:46:49 +00:00
Ben Clayton
b04d992f83 tint/utils: Fix Hashmap::GetOrCreate() for map mutation in create
Its not unreasonable for the create callback to mutate the map. If this
happened, the map would be corrupted.
This change fixes this.

Change-Id: I2bb3820061c741c6da36ebe3667cb6b878515a27
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/100903
Kokoro: Kokoro <noreply+kokoro@google.com>
Reviewed-by: Dan Sinclair <dsinclair@chromium.org>
Commit-Queue: Ben Clayton <bclayton@google.com>
2022-08-31 23:15:38 +00:00
Ben Clayton
4e0335c5af tint/utils: Add Generation() to Hashmap and Hashset.
Useful for knowing if you have to look up an entry again since the last
lookup.

Change-Id: Ib0374627ef5cd7fcff7fa2d9e72b4214260b2df3
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/100901
Kokoro: Kokoro <noreply+kokoro@google.com>
Reviewed-by: Dan Sinclair <dsinclair@chromium.org>
Commit-Queue: Ben Clayton <bclayton@chromium.org>
2022-08-31 19:04:28 +00:00
Ben Clayton
e13160efb6 tint/utils: Add Hashmap and Hashset
Algorithmically faster than `std::unordered_[map|set]`, and use a small vector internally reducing heap allocations.

Change-Id: I9c0b00468272d9d7c72ab077d832d66d1368500c
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/98123
Commit-Queue: Ben Clayton <bclayton@google.com>
Reviewed-by: Dan Sinclair <dsinclair@chromium.org>
2022-08-17 16:28:23 +00:00