10 Commits

Author SHA1 Message Date
Changkun Ou
2f54081adf testing: do not require os.Exit in TestMain
If TestMain reports a wrong exit code to os.Exit, the test will be
exited with exist code inconsist with test results.

This CL eliminates the requirement of calling os.Exit in TestMain.
Now, m.Run records the execution status of its test, the outer
main func will call os.Exit with that exit code if TestMain does
not call os.Exit.

If TestMain does not call m.Run, the outer main func remain calls
os.Exit(0) as before.

Fixes #34129

Change-Id: I9598023e03b0a6260f0217f34df41c231c7d6489
Reviewed-on: https://go-review.googlesource.com/c/go/+/219639
Reviewed-by: Ian Lance Taylor <iant@golang.org>
2020-03-17 00:45:15 +00:00
Bryan C. Mills
c55a50edb9 cmd/go: invalidate cached test results when the -timeout flag changes
Fixes #36134

Change-Id: Icc5e1269696db778ba5c1e6bebed9969b8841c81
Reviewed-on: https://go-review.googlesource.com/c/go/+/220365
Run-TryBot: Bryan C. Mills <bcmills@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Jay Conrod <jayconrod@google.com>
Reviewed-by: Michael Matloob <matloob@golang.org>
2020-03-04 20:52:43 +00:00
Emmanuel T Odeke
972df38445 runtime: during panic, print value instead of address, if kind is printable
Make panics more useful by printing values, if their
underlying kind is printable, instead of just their memory address.

Thus now given any custom type derived from any of:
    float*, int*, string, uint*

if we have panic with such a result, its value will be printed.

Thus given any of:
    type MyComplex128 complex128
    type MyFloat64 float64
    type MyString string
    type MyUintptr uintptr

    panic(MyComplex128(32.1 + 10i))
    panic(MyFloat64(-93.7))
    panic(MyString("This one"))
    panic(MyUintptr(93))

They will now print in the panic:

    panic: main.MyComplex64(+1.100000e-001+3.000000e+000i)
    panic: main.MyFloat64(-9.370000e+001)
    panic: main.MyString("This one")
    panic: main.MyUintptr(93)

instead of:

    panic: (main.MyComplex128) (0xe0100,0x138cc0)
    panic: (main.MyFloat64) (0xe0100,0x138068)
    panic: (main.MyString) (0x48aa00,0x4c0840)
    panic: (main.MyUintptr) (0xe0100,0x137e58)

and anything else will be printed as in the past with:

    panic: (main.MyStruct) (0xe4ee0,0x40a0e0)

Also while here, updated the Go1.15 release notes.

Fixes #37531

Change-Id: Ia486424344a386014f2869ab3483e42a9ef48ac4
Reviewed-on: https://go-review.googlesource.com/c/go/+/221779
Run-TryBot: Emmanuel Odeke <emm.odeke@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
2020-03-03 02:34:32 +00:00
Bryan C. Mills
583419e5d2 cmd/go/internal/{test,vet}: use a standard flag.FlagSet to parse flags
This removes much of the complexity of the implementation and use of
the cmd/go/internal/cmdflag package, and makes the behavior of GOFLAGS
in 'go test' and 'go vet' more consistent with other subcommands.

Some of the complexity reduction has been offset by code comments and
bug fixes, particularly for the handling of GOPATH arguments and flag
terminators ('--').

Fixes #32471
Fixes #18682

Change-Id: I1f6e46a7c679062e1e409e44a2b9f03b9172883b
Reviewed-on: https://go-review.googlesource.com/c/go/+/211358
Reviewed-by: Jay Conrod <jayconrod@google.com>
2020-02-25 20:54:34 +00:00
Changkun Ou
2e8dbae85c sync: add new Map method LoadAndDelete
This CL implements a LoadAndDelete method in sync.Map. Benchmark:

name                                              time/op
LoadAndDeleteBalanced/*sync_test.RWMutexMap-12    98.8ns ± 1%
LoadAndDeleteBalanced/*sync.Map-12                10.3ns ±11%
LoadAndDeleteUnique/*sync_test.RWMutexMap-12      99.2ns ± 2%
LoadAndDeleteUnique/*sync.Map-12                  6.63ns ±10%
LoadAndDeleteCollision/*sync_test.DeepCopyMap-12   140ns ± 0%
LoadAndDeleteCollision/*sync_test.RWMutexMap-12   75.2ns ± 2%
LoadAndDeleteCollision/*sync.Map-12               5.21ns ± 5%

In addition, Delete is bounded and more efficient if many collisions:

DeleteCollision/*sync_test.DeepCopyMap-12   120ns ± 2%   125ns ± 1%   +3.80%  (p=0.000 n=10+9)
DeleteCollision/*sync_test.RWMutexMap-12   73.5ns ± 3%  79.5ns ± 1%   +8.03%  (p=0.000 n=10+9)
DeleteCollision/*sync.Map-12               97.8ns ± 3%   5.9ns ± 4%  -94.00%  (p=0.000 n=10+10)

Fixes #33762

Change-Id: Ic8469a7861d27ab0edeface0078aad8af9b26c2f
Reviewed-on: https://go-review.googlesource.com/c/go/+/205899
Reviewed-by: Bryan C. Mills <bcmills@google.com>
Run-TryBot: Bryan C. Mills <bcmills@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
2020-02-25 14:31:55 +00:00
Changkun Ou
402ea9e4f9 time: add Ticker.Reset
This CL implements Ticker.Reset method in time package.

Benchmark:
name                 time/op
TickerReset-12       6.41µs ±10%
TickerResetNaive-12  95.7µs ±12%

Fixes #33184

Change-Id: I4cbd31796efa012b2a297bb342158f11a4a31fef
Reviewed-on: https://go-review.googlesource.com/c/go/+/220424
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
2020-02-24 01:50:28 +00:00
Andrew Bonventre
b0863ce0e6 Revert "time: add Ticker.Reset"
This reverts CL 217362 (6e5652bebede2d53484a872f6d1dfeb498b0b50c.)

Reason for revert: Causing failures on arm64 bots. See #33184 for more info

Change-Id: I72ba40047e4138767d95aaa68842893c3508c52f
Reviewed-on: https://go-review.googlesource.com/c/go/+/220638
Reviewed-by: Ian Lance Taylor <iant@golang.org>
2020-02-23 17:58:14 +00:00
Changkun Ou
6e5652bebe time: add Ticker.Reset
This CL implements Ticker.Reset method in time package.

Benchmark:
name                 time/op
TickerReset-12       6.41µs ±10%
TickerResetNaive-12  95.7µs ±12%

Fixes #33184

Change-Id: I12c651f81e452541bcbbc748b45f038aae1f8dae
Reviewed-on: https://go-review.googlesource.com/c/go/+/217362
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
2020-02-23 16:09:02 +00:00
Bryan C. Mills
9ca57923e2 testing: testing: add (*T).Deadline method for test timeout
Fixes #28135

Change-Id: I62818595eaf4a59d8b5c26cd6848c08fec795ad1
Reviewed-on: https://go-review.googlesource.com/c/go/+/202758
Run-TryBot: Bryan C. Mills <bcmills@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
2020-02-21 17:46:33 +00:00
Bryan C. Mills
a682cba19b doc/go1.15: create go1.15.html
Copied from go1.14.html, with changes redacted back to TODOs following
the model of CL 195058.

'relnote -html' does not report any changes at this time.

Updates #33738

Change-Id: I580232805ab7db35935f3e1ba03b720be4796a7e
Reviewed-on: https://go-review.googlesource.com/c/go/+/220278
Reviewed-by: Alexander Rakoczy <alex@golang.org>
Run-TryBot: Alexander Rakoczy <alex@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
2020-02-20 16:04:20 +00:00