Three new flags are added to the serve command, and threaded through to
the LSP forwarder:
-remote.listen.timeout: -listen.timeout for the auto-started daemon
-remote.debug: -debug for the auto-started daemon
-remote.logfile: -logfile for the auto-started daemon
As part of this change, no longer enable debugging the daemon by
default.
Notably none of this configuration affects serving, so modifying this
configuration has been chosen not to change the path to the automatic
daemon. In other words, this configuration has effect only for the
forwarder process that starts the daemon: all others will connect to the
daemon and inherit whatever configuration it had at startup. This should
be OK, because in the common case this configuration should be static
across all clients (e.g., many Vim sessions all sharing the same
.vimrc).
Exposing this configuration made the signature of lsprpc.NewForwarder
a bit hard to understand, so I decided to go ahead and switch to a
variadic options pattern for initializing both the Forwarder and
StreamServer, the latter just for consistency with the Forwarder.
Updates golang/go#34111
Change-Id: Iefb71e337befe08b23e451477d19fd57e69f36c6
Reviewed-on: https://go-review.googlesource.com/c/tools/+/222670
Run-TryBot: Robert Findley <rfindley@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
Currently `flag.Usage` set in `Main` prints a message as follows,
```
⋮
Flags: -V print version and exit
⋮
```
but this should be
```
⋮
Flags:
-V print version and exit
⋮
```
It seems this is caused by [this](https://go-review.googlesource.com/c/tools/+/162717).
Change-Id: Ida7223e87677da4b5f280708213a526b5973ce78
GitHub-Last-Rev: ed2729641cc564c66689fd959fdbcc341b9e7c77
GitHub-Pull-Request: golang/tools#213
Reviewed-on: https://go-review.googlesource.com/c/tools/+/223123
Reviewed-by: Michael Matloob <matloob@golang.org>
Run-TryBot: Michael Matloob <matloob@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Add a new toplevel `inspect` verb to the gopls command, to expose the
internal state of a running gopls server. For now, this verb exposes a
single subcommand `sessions`, which lists some information about current
server sessions on a gopls daemon.
This can be used even if the debug server is not running, which will
become the default in a later CL.
Updates golang/go#34111
Change-Id: Ib7d654a659fa47280584f9a7301b952cbccc565a
Reviewed-on: https://go-review.googlesource.com/c/tools/+/222669
Run-TryBot: Robert Findley <rfindley@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
This makes keys a pointer, which reduces the allocations during logging, and has
a significant improvement in memory and cpu cost when there is no exporter.
Packing a string into an interface requires a 16 byte allocation, packing a pointer
does not.
name old time/op new time/op delta
/LogNoExporter-8 4.39µs ± 2% 3.83µs ± 2% -12.74% (p=0.000 n=18+20)
/Log-8 23.5µs ± 2% 22.6µs ± 1% -4.20% (p=0.000 n=19+18)
name old alloc/op new alloc/op delta
/LogNoExporter-8 1.70kB ± 0% 1.38kB ± 0% -18.78% (p=0.000 n=20+20)
/Log-8 4.91kB ± 0% 4.91kB ± 0% ~ (p=1.000 n=20+20)
name old allocs/op new allocs/op delta
/LogNoExporter-8 83.0 ± 0% 63.0 ± 0% -24.10% (p=0.000 n=20+20)
/Log-8 163 ± 0% 163 ± 0% ~ (all equal)
Change-Id: Iec127f1bff8d5c8f4bd0a6d9f6d8fc4b8bc740b2
Reviewed-on: https://go-review.googlesource.com/c/tools/+/222599
Run-TryBot: Ian Cottrell <iancottrell@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Robert Findley <rfindley@google.com>
This is now the only package that is exposed to normal use, and should
be the only thing to appear in libraries.
Change-Id: I90ee47c6519f30db16ff5d5d2910be86e91e5df2
Reviewed-on: https://go-review.googlesource.com/c/tools/+/222557
Run-TryBot: Ian Cottrell <iancottrell@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Robert Findley <rfindley@google.com>
The original intention was to limit the number of open file handles,
but the parseLimit semaphore was limiting parser.ParseFile calls that
don't access files, so there was no benefit. The file limiting is
already handled generically by another semaphore in the lsp FileSystem
abstraction.
Change-Id: Idc7f2507af5287e983a7edf3e38a848d26770bbe
Reviewed-on: https://go-review.googlesource.com/c/tools/+/223119
Run-TryBot: Muir Manders <muir@mnd.rs>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
The tests will not run because there is no workspacesymbol marker.
Therefore, restore testdata used in WorkspaceSymbols tests, and
initialize data so that the tests run even if the target of the marker
is 0.
Change-Id: I051b842183b7e23bb746cc282fc3921a90ca8df1
Reviewed-on: https://go-review.googlesource.com/c/tools/+/221617
Reviewed-by: Heschi Kreinick <heschi@google.com>
Run-TryBot: Heschi Kreinick <heschi@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
We have no way of knowing the concrete type of an interface value;
it might be a fmt.Formatter. To avoid false positives, assume that
all interface values are fmt.Formatters.
Updates golang/go#36564
Change-Id: Iaf18ba2794e4d3095d0018502c1c6c459a360b42
Reviewed-on: https://go-review.googlesource.com/c/tools/+/217180
Reviewed-by: Rob Pike <r@golang.org>
Now we properly offer "case" and "default" keyword completion in cases
like:
switch {
<>
}
First I had to add an AST fix for empty switch statements to move the
closing brace down. For example, say the user is completing:
switch {
ca<>
}
This gets parsed as:
switch {
}
Even if we manually recover the "ca" token, "<>" is not positioned
inside the switch statement anymore, so we don't know to offer "case"
and "default" candidates. To work around this, we move the closing
brace down one line yielding:
switch {
}
Second I had to add logic to manually extract the completion prefix
inside empty switch statements, and finally some logic to offer (only)
"case" and "default" candidates in empty switch statements.
Updates golang/go#34009.
Change-Id: I624f17da1c5e73faf91fe5f69e872d86f1cf5482
Reviewed-on: https://go-review.googlesource.com/c/tools/+/220579
Run-TryBot: Muir Manders <muir@mnd.rs>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
deliver detach to the exporter as an event rather than hard coding the
span detach behavior.
Change-Id: I87b6e2a3596fea338908c11ba0b219176b6305bf
Reviewed-on: https://go-review.googlesource.com/c/tools/+/222542
Reviewed-by: Robert Findley <rfindley@google.com>
Explicitly listing the pruned packages ties the test to the details of
how the testing package is implemented. That shouldn't matter, and it
changes in CL 219639. This change makes it possible to work whether or
not CL 219639 is committed.
Updates golang/go#34129
Change-Id: I45875dadeaac42a1002e1329a1a762e340c5352c
Reviewed-on: https://go-review.googlesource.com/c/tools/+/221657
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Changkun Ou <euryugasaki@gmail.com>
Reviewed-by: Michael Matloob <matloob@golang.org>
Change AllImportsFixes to get the ParseGoHandle directly rather than
using getParsedFile. The latter also type checks the containing
package, which is slow in general and can be really slow in certain
circumstances. This should speed up the organizeImports code action.
Change-Id: Ic505873db41d5d76c398cee42f0323e390d9e034
Reviewed-on: https://go-review.googlesource.com/c/tools/+/222780
Run-TryBot: Muir Manders <muir@mnd.rs>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
The recent LPS protocol change made the definition of textEdit into
a union type, so the generated code made TextEdit an interface{},
which broke govim. This CL reverts it to a *TextEdit. The code
generator will be fixed in another CL.
We can revisit this when gopls wants to start using the new
InsertReplaceEdit type.
Change-Id: I4d7a14b3746b747f34b0907f72ecbc3593706a05
Reviewed-on: https://go-review.googlesource.com/c/tools/+/222765
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
It seems that people are running into this warning for reasons other
than ad-hoc packages. Suggest filing an issue, since it may be that they
are opening the wrong directory or something.
Change-Id: I88036d2db9477bbea5099910f4cd8e5ba55e0624
Reviewed-on: https://go-review.googlesource.com/c/tools/+/222597
Run-TryBot: Rebecca Stambler <rstambler@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
Now we offer an error-check-and-return completion candidate when
appropriate:
func myFunc() (int, error) {
f, err := os.Open("foo")
<>
}
offers the candidate:
if err != nil {
return 0, <err>
}
where <> denotes a placeholder so you can easily alter "err".
The completion will only be offered when:
1. The position is in a function that returns an error as final result
value, and
2. The statement preceding position is an assignment whose final LHS
value is an error.
The completion will contain zero values for the non-error return values
as necessary.
Using the above example, the completion will be offered after the user
has typed:
i
if
if err
Basically the candidate will be offered after every keystroke as the
user types "if err".
I call this new type of completion a statement completion - perfect
for when you want to make a statement!
Change-Id: I0a330e1c1fa81a2757d3afc84c24e853f46f26b0
Reviewed-on: https://go-review.googlesource.com/c/tools/+/221613
Run-TryBot: Muir Manders <muir@mnd.rs>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
1. logging at debug/rpc.go:105 was corrupting logs.
2. DocumentSymbol (a Server method) now returns []interface{}.
3. The latest version of the LSP changed CompletionItem.TextEdit to
possibly be of the new type InsertReplaceEdit, so the generated Go
code now has TextEdit an interface{} rather than a *TextEdit. This
required a change to tests/util.go.
4. The latest version also introduced several other new types,
and new members in some structs.
Tests pass and the I've use the new gopls a little.
Change-Id: Ic44d46f0c923882c9076c2754c1c85e09fbcaa2e
Reviewed-on: https://go-review.googlesource.com/c/tools/+/222668
Run-TryBot: Peter Weinberger <pjw@google.com>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Editors typically trigger completion automatically after ".". This
pops up annoying, useless completions after "..." variadic param, such
as "foo(bar...<>)". We now suppress completions in or directly after
the ellipsis.
Fixesgolang/go#37358.
Change-Id: I9fc94fbdf69429bd787bcb2c643f4f730e24154d
Reviewed-on: https://go-review.googlesource.com/c/tools/+/222200
Run-TryBot: Muir Manders <muir@mnd.rs>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
When running gopls as a forwarder it attempts to forward the LSP to a
remote daemon. On posix systems, by default this uses a unix domain
socket at a predictable filesystem location.
As an extra precaution, attempt to verify that the remote socket is in
fact owned by the current user.
Also, change the default TCP listen address used on windows to bind to
localhost.
Updates golang/go#34111
Change-Id: Ib24886d290089a773851c5439586c3ddc9eb797d
Reviewed-on: https://go-review.googlesource.com/c/tools/+/222246
Run-TryBot: Robert Findley <rfindley@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
We now offer "range" keyword in the for loop init statement:
for i := r<> // offer "range" completion candidate
Updates golang/go#34009.
Change-Id: I2e4c1db11c37127406c78191681c39b9dd3439f7
Reviewed-on: https://go-review.googlesource.com/c/tools/+/220504
Run-TryBot: Muir Manders <muir@mnd.rs>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
Offer "struct", "interface", "map", "chan", and "func" keywords when
we expect a type. For example "var foo i<>" will offer "interface".
Because "struct" and "interface" are more often used when declaring
named types, they get a higher score in type declarations. Otherwise,
"map", "chan" and "func" get a higher score.
I also got rid of the special keyword scoring. Now keywords just use
stdScore and highScore. This makes the interplay with other types of
candidates more predictable. Keywords are offered in pretty limited
contexts, so I don't think they will be annoying.
Finally, keyword candidate score is now to be scaled properly based on
how well they match the prefix. Previously they weren't penalized for
not matching well, so there were probably some situations where
keywords were ranked too high.
Updates golang/go#34009.
Change-Id: I0b659c00a8503cd72da28853dfe54fcb67f734ae
Reviewed-on: https://go-review.googlesource.com/c/tools/+/220503
Run-TryBot: Muir Manders <muir@mnd.rs>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
This change makes ModHandle and ModTidyHandle return a ModData structure that only contains an error if something goes wrong when parsing the .mod files.
Change-Id: I89661cfefeff666bdf13cf99f4c56137e120de82
Reviewed-on: https://go-review.googlesource.com/c/tools/+/222242
Run-TryBot: Rohan Challa <rohan@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
This change adds support when hierarchicalDocumentSymbolSupport is false, this can happen with editors who have not supported textDocument/DocumentSymbol. As a result, these older lsp clients need to recieve []protocol.SymbolInformation rather than []protocol.DocumentSymbol. This change required some changes to internal/lsp/cmd to handle not knowing which type it is receiving, this required manual parsing inside of cmd/symbols.go.
Fixesgolang/go#34893
Change-Id: I944ae24302f155b561047227f65bee34b160def1
Reviewed-on: https://go-review.googlesource.com/c/tools/+/221823
Run-TryBot: Rohan Challa <rohan@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
This type was previously guarded implicitly by the global exporter
mutex. With that gone, we've started seeing panics due to races in
(*rpcs).Metric.
Guard it with a mutex.
Change-Id: I2a8c670ecfbaee9422e1f1d282b1fedb86b6a5e0
Reviewed-on: https://go-review.googlesource.com/c/tools/+/222300
Run-TryBot: Robert Findley <rfindley@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Ian Cottrell <iancottrell@google.com>
This change adds support for passing a span to cmd/suggested_fix.go, originally it would just take the filename and apply all the fixes for that file. Now, it can also take just a span within that file and only apply the fixes relevant to that span.
The //@suggestedfix marker now contains an extra parameter to specify which type of codeaction is expected.
Change-Id: I4e94b8dad719f990dc2d0ef3c50816f70f59f737
Reviewed-on: https://go-review.googlesource.com/c/tools/+/222137
Run-TryBot: Rohan Challa <rohan@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
This change implements support for textDocument/formatting when it comes to go.mod files. It also adds formatting on save ability.
To enable formatting on save for go.mod files, you need to include the following settings inside of your VSCode settings.json:
...
"[go.mod]": {
"editor.codeActionsOnSave": {
"source.organizeImports": true,
},
"editor.formatOnSave": true,
},
...
Updates golang/go#36501
Change-Id: I60ac14d0e99b2b086fe9a8581770771aafc2173c
Reviewed-on: https://go-review.googlesource.com/c/tools/+/221223
Run-TryBot: Rohan Challa <rohan@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
With #34111, we are forwarding the LSP from one gopls instance to
another. This exposed an asymmetry in our LSP dispatching: for both
ClientDispatcher and ServerDispatcher, we unmarshal to non-nil response
structs. This means that when forwarding the LSP, we translate empty
JSON responses (corresponding to nil values) into the non-nil zero
value.
This causes problems for some editors, as reported in #37570. Fix it by
instead unmarshaling to a pointer.
This is, of course, a somewhat dangerous change. I fixed the one NPE
that occurred in tests, and have done some mild manual testing. I
wouldn't be surprised if we discover more NPEs later on, but I still
think this is the right change to make.
Updates golang/go#34111Fixesgolang/go#37570
Change-Id: Ie69e92d2821c829cdfc4f4ab303679a725f1f859
Reviewed-on: https://go-review.googlesource.com/c/tools/+/222058
Reviewed-by: Peter Weinberger <pjw@google.com>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
Run-TryBot: Robert Findley <rfindley@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
When the gopls daemon is automatically managed (-remote=auto), it will
be started by one of the forwarder gopls processes that was in turn
started by the editor. By default, this puts it in the same process
group as the forwarder gopls.
Some editors (at least Vim) send SIGTERM to the process groups of
sidecar processes when exiting. This can cause the gopls daemon to
terminate, thereby losing state.
Rather than ignore SIGTERM (which is bound to be editor dependent
anyway), let's just put the gopls daemon in a separate session.
Updates golang/go#34111
Change-Id: I71386fb54b8c2efe1c565f59763f46693a7d48b0
Reviewed-on: https://go-review.googlesource.com/c/tools/+/221220
Run-TryBot: Robert Findley <rfindley@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
When caching file data specific to a session (anything with a Version or
tied to a view), we now need to be more careful about the existence of
multiple sessions.
This change fixes a few places where we appear to cache session data
without explicitly referring to the session. In principal this could
cause data corruption in multi-session gopls instances, but I have not
been able to force this to occur in either manual or automated testing.
Also fix a data race to the unsaved overlays:
https://storage.googleapis.com/go-build-log/588ee798/linux-amd64-race_d0762522.log
Updates golang/go#34111
Change-Id: I47117da1aba1afc2e211785544ad3f8b3416d15d
Reviewed-on: https://go-review.googlesource.com/c/tools/+/222059
Run-TryBot: Robert Findley <rfindley@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rohan Challa <rohan@golang.org>
Reading the docstring, it looks like the sense of the type assertion was
accidentally inverted in this function. Fix it to what I believe was
intended.
Fixesgolang/go#37687
Change-Id: Ief44a996f1a262527c2916d6b78b81dd35b2cf9e
Reviewed-on: https://go-review.googlesource.com/c/tools/+/222217
Run-TryBot: Rohan Challa <rohan@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rohan Challa <rohan@golang.org>
This means that tags also become cheap if there is no exporter and cleans up the
mess with how spans, tags and logs were related.
Also fixes the currently broken metrics that relied on the span tags.
Change-Id: I8e56b6218a60fd31a1f6c8d329dbb2cab1b9254d
Reviewed-on: https://go-review.googlesource.com/c/tools/+/222065
Run-TryBot: Ian Cottrell <iancottrell@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Robert Findley <rfindley@google.com>
We need to use the filename derived from the symbol information, not the
one from CompiledGoFiles, in case of cgo packages.
No tests because workspace symbols are entangled with document symbols,
and the latter doesn't work in cgo packages.
Fixesgolang/go#37659.
Change-Id: Ic32293c542830a49b37c25ebf3b231771c3a4225
Reviewed-on: https://go-review.googlesource.com/c/tools/+/222060
Run-TryBot: Heschi Kreinick <heschi@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
This change attaches a modTidyHandle to the snapshot instance and tries to reuse it as often as possible. It also modifies the modTidyKey to include the files that have not yet been saved. This was necessary because `go mod tidy` only runs using contents on disk.
So, if a user decides to add an import that is not in their modcache, we run diagnostics as normal and the ModTidyKey's imports field gets updated with the new import, we run `go mod tidy` but since the file was not saved yet, nothing changes. Then when the user eventually saves their file, we do not rerun `go mod tidy` because the imports hash has not changed from the time the file was in overlay to the time the file was saved on disk. To be able to account for this, we need the invalidate the ModTidyKey when imports change between saves.
Change-Id: I9e210a15cf009d222cecd7824c2a1a927957483b
Reviewed-on: https://go-review.googlesource.com/c/tools/+/219477
Run-TryBot: Rohan Challa <rohan@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rebecca Stambler <rstambler@golang.org>
We no longer use the span as the core type of tracing, instead that is an
artifact of the exporter, and start and end tracing is just event based.
This both makes the interface normalized, and also means the null exporter case
is considerably cheaper in memory and cpu.
See below for benchstat changes
name old time/op new time/op delta
TracingNoExporter-8 4.19µs ±12% 2.71µs ±11% -35.33% (p=0.000 n=20+20)
Tracing-8 24.1µs ± 3% 5.1µs ±17% -78.66% (p=0.000 n=16+20)
name old alloc/op new alloc/op delta
TracingNoExporter-8 2.32kB ± 0% 0.40kB ± 0% -82.76% (p=0.000 n=20+20)
Tracing-8 6.32kB ± 0% 2.32kB ± 0% -63.30% (p=0.000 n=20+20)
name old allocs/op new allocs/op delta
TracingNoExporter-8 35.0 ± 0% 15.0 ± 0% -57.14% (p=0.000 n=20+20)
Tracing-8 215 ± 0% 35 ± 0% -83.72% (p=0.000 n=20+20)
Change-Id: I3cf25871fa49584819504b5c19aa580e5dd03395
Reviewed-on: https://go-review.googlesource.com/c/tools/+/221740
Run-TryBot: Ian Cottrell <iancottrell@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Emmanuel Odeke <emm.odeke@gmail.com>
These are just like the logging benchmarks but for tracing instead.
Also makes the log writer write out tracing events as well if it is
not in only errors mode
Change-Id: Ie00d7c80f7e2b9433787603261950f70ab1c1e9d
Reviewed-on: https://go-review.googlesource.com/c/tools/+/221739
Run-TryBot: Ian Cottrell <iancottrell@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Robert Findley <rfindley@google.com>
Reviewed-by: Emmanuel Odeke <emm.odeke@gmail.com>
This adds a type to events and makes the logging calls use it.
Change-Id: Iaa50fe2e332caae611b1e00424c878a3bc479feb
Reviewed-on: https://go-review.googlesource.com/c/tools/+/221741
Run-TryBot: Ian Cottrell <iancottrell@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Robert Findley <rfindley@google.com>
Reviewed-by: Emmanuel Odeke <emm.odeke@gmail.com>
The Tagger interface allowed for specifying a key in a tag list and having the
value be aquired from the context automatically. It was almost never used, and
the alternative (using the key to get the value) is not that much more long
winded, so it was not holding it's own weight from a complexity persective alone
but the performance cost of having to use a list of interface rather than a list
of tags was very large. See the benchstat improvements below for the difference
it makes to both speed and memory usage, especially in the no exporter case.
name old time/op new time/op delta
Baseline-8 341ns ± 2% 342ns ± 1% ~ (p=0.139 n=19+18)
LoggingNoExporter-8 2.46µs ± 5% 1.97µs ± 3% -19.88% (p=0.000 n=19+20)
Logging-8 13.3µs ± 2% 12.8µs ± 2% -3.42% (p=0.000 n=17+20)
LoggingStdlib-8 5.39µs ± 6% 5.34µs ± 3% ~ (p=0.692 n=20+19)
name old alloc/op new alloc/op delta
Baseline-8 80.0B ± 0% 80.0B ± 0% ~ (all equal)
LoggingNoExporter-8 728B ± 0% 440B ± 0% -39.56% (p=0.000 n=20+20)
Logging-8 2.75kB ± 0% 2.46kB ± 0% -10.53% (p=0.000 n=17+20)
LoggingStdlib-8 568B ± 0% 568B ± 0% ~ (all equal)
name old allocs/op new allocs/op delta
Baseline-8 5.00 ± 0% 5.00 ± 0% ~ (all equal)
LoggingNoExporter-8 32.0 ± 0% 23.0 ± 0% -28.12% (p=0.000 n=20+20)
Logging-8 88.0 ± 0% 79.0 ± 0% -10.23% (p=0.000 n=20+20)
LoggingStdlib-8 28.0 ± 0% 28.0 ± 0% ~ (all equal)
Change-Id: Ic203ad0c5de7451348976b999a0d038ac532dc39
Reviewed-on: https://go-review.googlesource.com/c/tools/+/221737
Run-TryBot: Ian Cottrell <iancottrell@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Robert Findley <rfindley@google.com>
Reviewed-by: Emmanuel Odeke <emm.odeke@gmail.com>
We change the main exporter to be stored and fetched using atomics rather
than aquiring a mutex for a mild (but significant in the disabled case) speedup.
Also has the benefit of not holding a global lock over all telemetry operations.
benchstat of logging benchmatks before and after:
name old time/op new time/op delta
Baseline-8 329ns ± 2% 327ns ± 2% ~ (p=0.181 n=19+17)
LoggingNoExporter-8 3.08µs ± 3% 2.42µs ± 2% -21.42% (p=0.000 n=20+19)
Logging-8 13.7µs ± 2% 13.2µs ± 1% -3.49% (p=0.000 n=19+19)
LoggingStdlib-8 5.39µs ± 3% 5.41µs ± 2% ~ (p=0.177 n=19+20)
This is a replacement for https://go-review.googlesource.com/c/tools/+/212244
but built on the single exporter principle rather than the exporter list.
Change-Id: Icc99319c4357e0bcb63386c64372a733e8a76796
Reviewed-on: https://go-review.googlesource.com/c/tools/+/221218
Run-TryBot: Emmanuel Odeke <emm.odeke@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Emmanuel Odeke <emm.odeke@gmail.com>
