SliceEqualAnyOrderFunc had an optimization missing from SliceEqualAnyOrder.
Now they share the same code and both have the optimization.
Updates #14593
Change-Id: I550726e0964fc4006e77bb44addc67be989c131c
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
This was flagged by @tkhattra on the merge commit; thanks!
Updates tailscale/corp#25479
Signed-off-by: Andrew Dunham <andrew@du.nham.ca>
Change-Id: Ia8045640f02bd4dcc0fe7433249fd72ac6b9cf52
In this PR, we add a generic views.ValuePointer type that can be used as a view for pointers
to basic types and struct types that do not require deep cloning and do not have corresponding
view types. Its Get/GetOk methods return stack-allocated shallow copies of the underlying value.
We then update the cmd/viewer codegen to produce getters that return either concrete views
when available or ValuePointer views when not, for pointer fields in generated view types.
This allows us to avoid unnecessary allocations compared to returning pointers to newly
allocated shallow copies.
Updates #14570
Signed-off-by: Nick Khyl <nickk@tailscale.com>
If the total number of differences is less than a small amount, just do
the dumb quadratic thing and compare every single object instead of
allocating a map.
Updates tailscale/corp#25479
Signed-off-by: Andrew Dunham <andrew@du.nham.ca>
Change-Id: I8931b4355a2da4ec0f19739927311cf88711a840
Extracted from some code written in the other repo.
Updates tailscale/corp#25479
Signed-off-by: Andrew Dunham <andrew@du.nham.ca>
Change-Id: I6df062fdffa1705524caa44ac3b6f2788cf64595
Extracted from some code written in the other repo.
Updates tailscale/corp#25479
Signed-off-by: Andrew Dunham <andrew@du.nham.ca>
Change-Id: I92c97a63a8f35cace6e89a730938ea587dcefd9b
The remaining range funcs in the tree are RangeOverTCPs and
RangeOverWebs in ServeConfig; those will be cleaned up separately.
Updates #12912
Change-Id: Ieeae4864ab088877263c36b805f77aa8e6be938d
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
Their callers using Range are all kinda clunky feeling. Iterators
should make them more readable.
Updates #12912
Change-Id: I93461eba8e735276fda4a8558a4ae4bfd6c04922
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
And convert a few callers as an example, but nowhere near all.
Updates #12912
Change-Id: I5eaa12a29a6cd03b58d6f1072bd27bc0467852f2
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
This adds support for container-like types such as Container[T] that
don't explicitly specify a view type for T. Instead, a package implementing
a container type should also implement and export a ContainerView[T, V] type
and a ContainerViewOf(*Container[T]) ContainerView[T, V] function, which
returns a view for the specified container, inferring the element view type V
from the element type T.
Updates #12736
Signed-off-by: Nick Khyl <nickk@tailscale.com>
This abstraction provides a nicer way to work with
maps of slices without having to write out three long type
params.
This also allows it to provide an AsMap implementation which
copies the map and the slices at least.
Updates tailscale/corp#20910
Signed-off-by: Maisem Ali <maisem@tailscale.com>
This was a typo in 2e19790f611cd15d603eac35bae46cb3c707ef85.
It should have been on `Map` and not on `*Map` as otherwise
it doesn't allow for chaining like `someView.SomeMap().AsMap()`
and requires first assigning it to a variable.
Updates #typo
Signed-off-by: Maisem Ali <maisem@tailscale.com>
In control there are conditions where the leaf functions are not being
optimized away (i.e. At is not inlined), resulting in undesirable time
spent copying during SliceContains. This optimization is likely
irrelevant to simpler code or smaller structures.
Updates #optimization
Signed-off-by: James Tucker <james@tailscale.com>
For a second we thought this was allocating but we were looking
at a CPU profile (which showed calls to mallocgc view makeslice)
instead of the alloc profile.
Updates golang/go#65685 (which if fixed wouldn't have confused us)
Change-Id: Ic0132310d52d8a65758a516142525339aa23b1ed
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
views.Slice are meant to be immutable, and if used as such it
is at times desirable to use them as a key in a map. For non-viewed
slices it was kinda doable by creating a custom key struct but views.Slice
didn't allow for the same so add a method to create that struct here.
Updates tailscale/corp#17122
Signed-off-by: Maisem Ali <maisem@tailscale.com>
Make it just a views.Slice[netip.Prefix] instead of its own named type.
Having the special case led to circular dependencies in another WIP PR
of mine.
Updates #8948
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
This is basically https://github.com/bradfitz/iter which was
a joke but now that Go's adding range over int soonish, might
as well. It simplies our code elsewher that uses slice views.
Updates #8948
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
This updates all source files to use a new standard header for copyright
and license declaration. Notably, copyright no longer includes a date,
and we now use the standard SPDX-License-Identifier header.
This commit was done almost entirely mechanically with perl, and then
some minimal manual fixes.
Updates #6865
Signed-off-by: Will Norris <will@tailscale.com>
This is based on the tagsEqual func from corp/control/control.go, moved
here so that it can be reused in other places.
Signed-off-by: Will Norris <will@tailscale.com>
x/exp/slices now has ContainsFunc (golang/go#53983) so we can delete
our versions.
Change-Id: I5157a403bfc1b30e243bf31c8b611da25e995078
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
Also make IPPrefixSliceOf use Slice[netaddr.IPPrefix] as it also
provides additional functions besides the standard ones provided by
Slice[T].
Signed-off-by: Maisem Ali <maisem@tailscale.com>
