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2026-02-02internal/maps,cmd/compile/internal/walk: replace calls to mapaccess1* with ↵ArsenySamoylov
mapaccess2* mapaccess1* and mapaccess2* functions share the same implementation and differ only in whether the boolean "found" is returned. This change replaces mapaccess1* calls with mapaccess2*. We can do this transparently, since the call site can safely discard the second (boolean) result. Ideally, mapacces1* functions could be removed entirely, but this change keeps them as thin wrappers for compatibility. Fixes #73196 Change-Id: I07c3423d22ed1095ac3666d00e134c2747b2f9c1 Reviewed-on: https://go-review.googlesource.com/c/go/+/736020 Reviewed-by: Keith Randall <khr@google.com> Reviewed-by: Michael Pratt <mpratt@google.com> Auto-Submit: Keith Randall <khr@golang.org> LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com> Reviewed-by: Keith Randall <khr@golang.org>
2025-07-30all: remove redundant Swiss prefixesMichael Pratt
Now that there is only one map implementation we can simplify names. For #54766. Change-Id: I6a6a636cc6a8fc5e7712c27782fc0ced7467b939 Reviewed-on: https://go-review.googlesource.com/c/go/+/691596 Reviewed-by: Keith Randall <khr@google.com> Auto-Submit: Michael Pratt <mpratt@google.com> Reviewed-by: Keith Randall <khr@golang.org> LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
2025-07-30all: remove GOEXPERIMENT=swissmapMichael Pratt
For #54766. Change-Id: I6a6a636c40b5fe2e8b0d4a5e23933492bc8bb76e Reviewed-on: https://go-review.googlesource.com/c/go/+/691595 Reviewed-by: Keith Randall <khr@google.com> Auto-Submit: Michael Pratt <mpratt@google.com> LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com> Reviewed-by: Keith Randall <khr@golang.org>
2024-08-02all: create swissmap experiment and fork filesMichael Pratt
The _swiss.go files are identical to the originals (except build tag). Later CLs will change them. For #54766. Cq-Include-Trybots: luci.golang.try:gotip-linux-amd64-longtest-swissmap Change-Id: I9943e2d6f1cfa227ffbf27c9ddc9ce853695d225 Reviewed-on: https://go-review.googlesource.com/c/go/+/580778 LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com> Reviewed-by: Keith Randall <khr@golang.org> Auto-Submit: Michael Pratt <mpratt@google.com> Commit-Queue: Michael Pratt <mpratt@google.com> Reviewed-by: Keith Randall <khr@google.com>
2024-07-23runtime,internal: move runtime/internal/math to internal/runtime/mathDavid Chase
Cleanup and friction reduction. Updates #65355. Change-Id: I6c4fcd409d044c00d16561fe9ed2257877d73f5b Reviewed-on: https://go-review.googlesource.com/c/go/+/600435 Reviewed-by: Keith Randall <khr@google.com> LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com> Reviewed-by: Keith Randall <khr@golang.org>
2024-05-29all: document legacy //go:linkname for final round of modulesRuss Cox
Add linknames for most modules with ≥50 dependents. Add linknames for a few other modules that we know are important but are below 50. Remove linknames from badlinkname.go that do not merit inclusion (very small number of dependents). We can add them back later if the need arises. Fixes #67401. (For now.) Change-Id: I1e49fec0292265256044d64b1841d366c4106002 Reviewed-on: https://go-review.googlesource.com/c/go/+/587756 Auto-Submit: Russ Cox <rsc@golang.org> TryBot-Bypass: Russ Cox <rsc@golang.org> Reviewed-by: Cherry Mui <cherryyz@google.com>
2024-05-29all: document legacy //go:linkname for modules with ≥100 dependentsRuss Cox
For #67401. Change-Id: I015408a3f437c1733d97160ef2fb5da6d4efcc5c Reviewed-on: https://go-review.googlesource.com/c/go/+/587598 Reviewed-by: Cherry Mui <cherryyz@google.com> LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com> Auto-Submit: Russ Cox <rsc@golang.org>
2024-05-23all: document legacy //go:linkname for modules with ≥200 dependentsRuss Cox
Ignored these linknames which have not worked for a while: github.com/xtls/xray-core: context.newCancelCtx removed in CL 463999 (Feb 2023) github.com/u-root/u-root: funcPC removed in CL 513837 (Jul 2023) tinygo.org/x/drivers: net.useNetdev never existed For #67401. Change-Id: I9293f4ef197bb5552b431de8939fa94988a060ce Reviewed-on: https://go-review.googlesource.com/c/go/+/587576 Auto-Submit: Russ Cox <rsc@golang.org> Reviewed-by: Cherry Mui <cherryyz@google.com> LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
2024-05-23all: document legacy //go:linkname for modules with ≥1,000 dependentsRuss Cox
For #67401. Change-Id: If23a2c07e3dd042a3c439da7088437a330b9caa4 Reviewed-on: https://go-review.googlesource.com/c/go/+/587222 Auto-Submit: Russ Cox <rsc@golang.org> LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com> Reviewed-by: Cherry Mui <cherryyz@google.com>
2024-05-23all: document legacy //go:linkname for modules with ≥5,000 dependentsRuss Cox
For #67401. Change-Id: Ifea84af92017b405466937f50fb8f28e6893c8cb Reviewed-on: https://go-review.googlesource.com/c/go/+/587220 Reviewed-by: Cherry Mui <cherryyz@google.com> LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com> Auto-Submit: Russ Cox <rsc@golang.org>
2024-05-23all: document legacy //go:linkname for modules with ≥20,000 dependentsRuss Cox
For #67401. Change-Id: Icc10ede72547d8020c0ba45e89d954822a4b2455 Reviewed-on: https://go-review.googlesource.com/c/go/+/587218 Auto-Submit: Russ Cox <rsc@golang.org> Reviewed-by: Cherry Mui <cherryyz@google.com> LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
2024-05-22all: document legacy //go:linkname for modules with ≥50,000 dependentsRuss Cox
Note that this depends on the revert of CL 581395 to move zeroVal back. For #67401. Change-Id: I507c27c2404ad1348aabf1ffa3740e6b1957495b Reviewed-on: https://go-review.googlesource.com/c/go/+/587217 LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com> Auto-Submit: Russ Cox <rsc@golang.org> Reviewed-by: Cherry Mui <cherryyz@google.com>
2024-05-22runtime: revert "move zeroVal to internal/abi"Russ Cox
This reverts CL 581395, commit 2f5b420fb5984842afab37a9c2e66e6599107483. It breaks a linkname from github.com/ugorji/go/codec. For #67401. A followup CL will document this dependence. Change-Id: I66d6c39c03e769ab829ca4c3f4f61277b93380d3 Reviewed-on: https://go-review.googlesource.com/c/go/+/587216 TryBot-Bypass: Russ Cox <rsc@golang.org> Auto-Submit: Russ Cox <rsc@golang.org> Reviewed-by: Cherry Mui <cherryyz@google.com>
2024-05-22all: document legacy //go:linkname for modules with ≥100,000 dependentsRuss Cox
For #67401. Change-Id: I51f5b561ee11eb242e3b1585d591281d0df4fc24 Reviewed-on: https://go-review.googlesource.com/c/go/+/587215 Auto-Submit: Russ Cox <rsc@golang.org> Reviewed-by: Cherry Mui <cherryyz@google.com> LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
2024-05-03runtime,reflect: move zeroVal to internal/abiqiulaidongfeng
Change-Id: I0e19e4aa2ea47a714e27b8d66c23c449e27861f2 GitHub-Last-Rev: 2d59b9589efcf4ade6cfd7c8feffc46bf9ba912c GitHub-Pull-Request: golang/go#67014 Reviewed-on: https://go-review.googlesource.com/c/go/+/581395 Reviewed-by: Keith Randall <khr@golang.org> LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com> Reviewed-by: Keith Randall <khr@google.com> Reviewed-by: Joedian Reid <joedian@google.com>
2024-04-22runtime: move zeroVal out of map.goMichael Pratt
It isn't specific to maps, so put it in a more general location. For #54766. Change-Id: Ia3f3ebe8c347cfa5a8582082a306f4df4e05818d Reviewed-on: https://go-review.googlesource.com/c/go/+/580777 Reviewed-by: Cherry Mui <cherryyz@google.com> Auto-Submit: Michael Pratt <mpratt@google.com> LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
2024-03-25runtime: migrate internal/atomic to internal/runtimeAndy Pan
For #65355 Change-Id: I65dd090fb99de9b231af2112c5ccb0eb635db2be Reviewed-on: https://go-review.googlesource.com/c/go/+/560155 Reviewed-by: David Chase <drchase@google.com> Reviewed-by: Michael Pratt <mpratt@google.com> LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com> Reviewed-by: Ibrahim Bazoka <ibrahimbazoka729@gmail.com> Auto-Submit: Emmanuel Odeke <emmanuel@orijtech.com>
2024-03-04runtime: use .Pointers() instead of manual checkingPouriya
Change-Id: Ib78c1513616089f4942297cd17212b1b11871fd5 GitHub-Last-Rev: f97fe5b5bffffe25dc31de7964588640cb70ec41 GitHub-Pull-Request: golang/go#65819 Reviewed-on: https://go-review.googlesource.com/c/go/+/565515 Reviewed-by: Jorropo <jorropo.pgm@gmail.com> LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com> Auto-Submit: Keith Randall <khr@golang.org> Reviewed-by: Michael Knyszek <mknyszek@google.com> Reviewed-by: Keith Randall <khr@google.com> Reviewed-by: Keith Randall <khr@golang.org>
2024-02-27runtime: use MapMaxKeyBytes,MapMaxElemBytes,MapBucketCount of internal/abiqiulaidongfeng
For #59670 Change-Id: I9265e033bf3a84c3dc7b4a5d52c0df9672435f0d GitHub-Last-Rev: 8e4099095cec9e774abe9b72212a1eab6f6f9fdb GitHub-Pull-Request: golang/go#64774 Reviewed-on: https://go-review.googlesource.com/c/go/+/550117 Reviewed-by: Keith Randall <khr@golang.org> Reviewed-by: Keith Randall <khr@google.com> Reviewed-by: Than McIntosh <thanm@google.com> LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
2023-12-05math/rand, math/rand/v2: use ChaCha8 for global randRuss Cox
Move ChaCha8 code into internal/chacha8rand and use it to implement runtime.rand, which is used for the unseeded global source for both math/rand and math/rand/v2. This also affects the calculation of the start point for iteration over very very large maps (when the 32-bit fastrand is not big enough). The benefit is that misuse of the global random number generators in math/rand and math/rand/v2 in contexts where non-predictable randomness is important for security reasons is no longer a security problem, removing a common mistake among programmers who are unaware of the different kinds of randomness. The cost is an extra 304 bytes per thread stored in the m struct plus 2-3ns more per random uint64 due to the more sophisticated algorithm. Using PCG looks like it would cost about the same, although I haven't benchmarked that. Before this, the math/rand and math/rand/v2 global generator was wyrand (https://github.com/wangyi-fudan/wyhash). For math/rand, using wyrand instead of the Mitchell/Reeds/Thompson ALFG was justifiable, since the latter was not any better. But for math/rand/v2, the global generator really should be at least as good as one of the well-studied, specific algorithms provided directly by the package, and it's not. (Wyrand is still reasonable for scheduling and cache decisions.) Good randomness does have a cost: about twice wyrand. Also rationalize the various runtime rand references. goos: linux goarch: amd64 pkg: math/rand/v2 cpu: AMD Ryzen 9 7950X 16-Core Processor │ bbb48afeb7.amd64 │ 5cf807d1ea.amd64 │ │ sec/op │ sec/op vs base │ ChaCha8-32 1.862n ± 2% 1.861n ± 2% ~ (p=0.825 n=20) PCG_DXSM-32 1.471n ± 1% 1.460n ± 2% ~ (p=0.153 n=20) SourceUint64-32 1.636n ± 2% 1.582n ± 1% -3.30% (p=0.000 n=20) GlobalInt64-32 2.087n ± 1% 3.663n ± 1% +75.54% (p=0.000 n=20) GlobalInt64Parallel-32 0.1042n ± 1% 0.2026n ± 1% +94.48% (p=0.000 n=20) GlobalUint64-32 2.263n ± 2% 3.724n ± 1% +64.57% (p=0.000 n=20) GlobalUint64Parallel-32 0.1019n ± 1% 0.1973n ± 1% +93.67% (p=0.000 n=20) Int64-32 1.771n ± 1% 1.774n ± 1% ~ (p=0.449 n=20) Uint64-32 1.863n ± 2% 1.866n ± 1% ~ (p=0.364 n=20) GlobalIntN1000-32 3.134n ± 3% 4.730n ± 2% +50.95% (p=0.000 n=20) IntN1000-32 2.489n ± 1% 2.489n ± 1% ~ (p=0.683 n=20) Int64N1000-32 2.521n ± 1% 2.516n ± 1% ~ (p=0.394 n=20) Int64N1e8-32 2.479n ± 1% 2.478n ± 2% ~ (p=0.743 n=20) Int64N1e9-32 2.530n ± 2% 2.514n ± 2% ~ (p=0.193 n=20) Int64N2e9-32 2.501n ± 1% 2.494n ± 1% ~ (p=0.616 n=20) Int64N1e18-32 3.227n ± 1% 3.205n ± 1% ~ (p=0.101 n=20) Int64N2e18-32 3.647n ± 1% 3.599n ± 1% ~ (p=0.019 n=20) Int64N4e18-32 5.135n ± 1% 5.069n ± 2% ~ (p=0.034 n=20) Int32N1000-32 2.657n ± 1% 2.637n ± 1% ~ (p=0.180 n=20) Int32N1e8-32 2.636n ± 1% 2.636n ± 1% ~ (p=0.763 n=20) Int32N1e9-32 2.660n ± 2% 2.638n ± 1% ~ (p=0.358 n=20) Int32N2e9-32 2.662n ± 2% 2.618n ± 2% ~ (p=0.064 n=20) Float32-32 2.272n ± 2% 2.239n ± 2% ~ (p=0.194 n=20) Float64-32 2.272n ± 1% 2.286n ± 2% ~ (p=0.763 n=20) ExpFloat64-32 3.762n ± 1% 3.744n ± 1% ~ (p=0.171 n=20) NormFloat64-32 3.706n ± 1% 3.655n ± 2% ~ (p=0.066 n=20) Perm3-32 32.93n ± 3% 34.62n ± 1% +5.13% (p=0.000 n=20) Perm30-32 202.9n ± 1% 204.0n ± 1% ~ (p=0.482 n=20) Perm30ViaShuffle-32 115.0n ± 1% 114.9n ± 1% ~ (p=0.358 n=20) ShuffleOverhead-32 112.8n ± 1% 112.7n ± 1% ~ (p=0.692 n=20) Concurrent-32 2.107n ± 0% 3.725n ± 1% +76.75% (p=0.000 n=20) goos: darwin goarch: arm64 pkg: math/rand/v2 │ bbb48afeb7.arm64 │ 5cf807d1ea.arm64 │ │ sec/op │ sec/op vs base │ ChaCha8-8 2.480n ± 0% 2.429n ± 0% -2.04% (p=0.000 n=20) PCG_DXSM-8 2.531n ± 0% 2.530n ± 0% ~ (p=0.877 n=20) SourceUint64-8 2.534n ± 0% 2.533n ± 0% ~ (p=0.732 n=20) GlobalInt64-8 2.172n ± 1% 4.794n ± 0% +120.67% (p=0.000 n=20) GlobalInt64Parallel-8 0.4320n ± 0% 0.9605n ± 0% +122.32% (p=0.000 n=20) GlobalUint64-8 2.182n ± 0% 4.770n ± 0% +118.58% (p=0.000 n=20) GlobalUint64Parallel-8 0.4307n ± 0% 0.9583n ± 0% +122.51% (p=0.000 n=20) Int64-8 4.107n ± 0% 4.104n ± 0% ~ (p=0.416 n=20) Uint64-8 4.080n ± 0% 4.080n ± 0% ~ (p=0.052 n=20) GlobalIntN1000-8 2.814n ± 2% 5.643n ± 0% +100.50% (p=0.000 n=20) IntN1000-8 4.141n ± 0% 4.139n ± 0% ~ (p=0.140 n=20) Int64N1000-8 4.140n ± 0% 4.140n ± 0% ~ (p=0.313 n=20) Int64N1e8-8 4.140n ± 0% 4.139n ± 0% ~ (p=0.103 n=20) Int64N1e9-8 4.139n ± 0% 4.140n ± 0% ~ (p=0.761 n=20) Int64N2e9-8 4.140n ± 0% 4.140n ± 0% ~ (p=0.636 n=20) Int64N1e18-8 5.266n ± 0% 5.326n ± 1% +1.14% (p=0.001 n=20) Int64N2e18-8 6.052n ± 0% 6.167n ± 0% +1.90% (p=0.000 n=20) Int64N4e18-8 8.826n ± 0% 9.051n ± 0% +2.55% (p=0.000 n=20) Int32N1000-8 4.127n ± 0% 4.132n ± 0% +0.12% (p=0.000 n=20) Int32N1e8-8 4.126n ± 0% 4.131n ± 0% +0.12% (p=0.000 n=20) Int32N1e9-8 4.127n ± 0% 4.132n ± 0% +0.12% (p=0.000 n=20) Int32N2e9-8 4.132n ± 0% 4.131n ± 0% ~ (p=0.017 n=20) Float32-8 4.109n ± 0% 4.105n ± 0% ~ (p=0.379 n=20) Float64-8 4.107n ± 0% 4.106n ± 0% ~ (p=0.867 n=20) ExpFloat64-8 5.339n ± 0% 5.383n ± 0% +0.82% (p=0.000 n=20) NormFloat64-8 5.735n ± 0% 5.737n ± 1% ~ (p=0.856 n=20) Perm3-8 26.65n ± 0% 26.80n ± 1% +0.58% (p=0.000 n=20) Perm30-8 194.8n ± 1% 197.0n ± 0% +1.18% (p=0.000 n=20) Perm30ViaShuffle-8 156.6n ± 0% 157.6n ± 1% +0.61% (p=0.000 n=20) ShuffleOverhead-8 124.9n ± 0% 125.5n ± 0% +0.52% (p=0.000 n=20) Concurrent-8 2.434n ± 3% 5.066n ± 0% +108.09% (p=0.000 n=20) goos: linux goarch: 386 pkg: math/rand/v2 cpu: AMD Ryzen 9 7950X 16-Core Processor │ bbb48afeb7.386 │ 5cf807d1ea.386 │ │ sec/op │ sec/op vs base │ ChaCha8-32 11.295n ± 1% 4.748n ± 2% -57.96% (p=0.000 n=20) PCG_DXSM-32 7.693n ± 1% 7.738n ± 2% ~ (p=0.542 n=20) SourceUint64-32 7.658n ± 2% 7.622n ± 2% ~ (p=0.344 n=20) GlobalInt64-32 3.473n ± 2% 7.526n ± 2% +116.73% (p=0.000 n=20) GlobalInt64Parallel-32 0.3198n ± 0% 0.5444n ± 0% +70.22% (p=0.000 n=20) GlobalUint64-32 3.612n ± 0% 7.575n ± 1% +109.69% (p=0.000 n=20) GlobalUint64Parallel-32 0.3168n ± 0% 0.5403n ± 0% +70.51% (p=0.000 n=20) Int64-32 7.673n ± 2% 7.789n ± 1% ~ (p=0.122 n=20) Uint64-32 7.773n ± 1% 7.827n ± 2% ~ (p=0.920 n=20) GlobalIntN1000-32 6.268n ± 1% 9.581n ± 1% +52.87% (p=0.000 n=20) IntN1000-32 10.33n ± 2% 10.45n ± 1% ~ (p=0.233 n=20) Int64N1000-32 10.98n ± 2% 11.01n ± 1% ~ (p=0.401 n=20) Int64N1e8-32 11.19n ± 2% 10.97n ± 1% ~ (p=0.033 n=20) Int64N1e9-32 11.06n ± 1% 11.08n ± 1% ~ (p=0.498 n=20) Int64N2e9-32 11.10n ± 1% 11.01n ± 2% ~ (p=0.995 n=20) Int64N1e18-32 15.23n ± 2% 15.04n ± 1% ~ (p=0.973 n=20) Int64N2e18-32 15.89n ± 1% 15.85n ± 1% ~ (p=0.409 n=20) Int64N4e18-32 18.96n ± 2% 19.34n ± 2% ~ (p=0.048 n=20) Int32N1000-32 10.46n ± 2% 10.44n ± 2% ~ (p=0.480 n=20) Int32N1e8-32 10.46n ± 2% 10.49n ± 2% ~ (p=0.951 n=20) Int32N1e9-32 10.28n ± 2% 10.26n ± 1% ~ (p=0.431 n=20) Int32N2e9-32 10.50n ± 2% 10.44n ± 2% ~ (p=0.249 n=20) Float32-32 13.80n ± 2% 13.80n ± 2% ~ (p=0.751 n=20) Float64-32 23.55n ± 2% 23.87n ± 0% ~ (p=0.408 n=20) ExpFloat64-32 15.36n ± 1% 15.29n ± 2% ~ (p=0.316 n=20) NormFloat64-32 13.57n ± 1% 13.79n ± 1% +1.66% (p=0.005 n=20) Perm3-32 45.70n ± 2% 46.99n ± 2% +2.81% (p=0.001 n=20) Perm30-32 399.0n ± 1% 403.8n ± 1% +1.19% (p=0.006 n=20) Perm30ViaShuffle-32 349.0n ± 1% 350.4n ± 1% ~ (p=0.909 n=20) ShuffleOverhead-32 322.3n ± 1% 323.8n ± 1% ~ (p=0.410 n=20) Concurrent-32 3.331n ± 1% 7.312n ± 1% +119.50% (p=0.000 n=20) For #61716. Change-Id: Ibdddeed85c34d9ae397289dc899e04d4845f9ed2 Reviewed-on: https://go-review.googlesource.com/c/go/+/516860 Reviewed-by: Michael Pratt <mpratt@google.com> Reviewed-by: Filippo Valsorda <filippo@golang.org> LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
2023-12-05maps: fix aliasing problems with CloneKeith Randall
Make sure to alloc+copy large keys and values instead of aliasing them, when they might be updated by a future assignment. Fixes #64474 Change-Id: Ie2226a81cf3897e4e2ee24472f2966d397ace53f Reviewed-on: https://go-review.googlesource.com/c/go/+/546515 Reviewed-by: Cherry Mui <cherryyz@google.com> LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com> Reviewed-by: Keith Randall <khr@google.com> Reviewed-by: Mauri de Souza Meneguzzo <mauri870@gmail.com>
2023-11-22internal/abi, runtime, reflect, cmd: merge maxZero const into internal/abiqiulaidongfeng
For #59670 Change-Id: If38a74ad067a3ea3ff551c0c25c8ef41abec114b GitHub-Last-Rev: fb1f2f3c9f320017627bc3342b061e1e7f6f7fad GitHub-Pull-Request: golang/go#64268 Reviewed-on: https://go-review.googlesource.com/c/go/+/543655 Run-TryBot: qiulaidongfeng <2645477756@qq.com> TryBot-Result: Gopher Robot <gobot@golang.org> Reviewed-by: Matthew Dempsky <mdempsky@google.com> Reviewed-by: Keith Randall <khr@google.com> Reviewed-by: Keith Randall <khr@golang.org>
2023-11-09runtime: implement experiment to replace heap bitmap with alloc headersMichael Anthony Knyszek
This change replaces the 1-bit-per-word heap bitmap for most size classes with allocation headers for objects that contain pointers. The header consists of a single pointer to a type. All allocations with headers are treated as implicitly containing one or more instances of the type in the header. As the name implies, headers are usually stored as the first word of an object. There are two additional exceptions to where headers are stored and how they're used. Objects smaller than 512 bytes do not have headers. Instead, a heap bitmap is reserved at the end of spans for objects of this size. A full word of overhead is too much for these small objects. The bitmap is of the same format of the old bitmap, minus the noMorePtrs bits which are unnecessary. All the objects <512 bytes have a bitmap less than a pointer-word in size, and that was the granularity at which noMorePtrs could stop scanning early anyway. Objects that are larger than 32 KiB (which have their own span) have their headers stored directly in the span, to allow power-of-two-sized allocations to not spill over into an extra page. The full implementation is behind GOEXPERIMENT=allocheaders. The purpose of this change is performance. First and foremost, with headers we no longer have to unroll pointer/scalar data at allocation time for most size classes. Small size classes still need some unrolling, but their bitmaps are small so we can optimize that case fairly well. Larger objects effectively have their pointer/scalar data unrolled on-demand from type data, which is much more compactly represented and results in less TLB pressure. Furthermore, since the headers are usually right next to the object and where we're about to start scanning, we get an additional temporal locality benefit in the data cache when looking up type metadata. The pointer/scalar data is now effectively unrolled on-demand, but it's also simpler to unroll than before; that unrolled data is never written anywhere, and for arrays we get the benefit of retreading the same data per element, as opposed to looking it up from scratch for each pointer-word of bitmap. Lastly, because we no longer have a heap bitmap that spans the entire heap, there's a flat 1.5% memory use reduction. This is balanced slightly by some objects possibly being bumped up a size class, but most objects are not tightly optimized to size class sizes so there's some memory to spare, making the header basically free in those cases. See the follow-up CL which turns on this experiment by default for benchmark results. (CL 538217.) Change-Id: I4c9034ee200650d06d8bdecd579d5f7c1bbf1fc5 Reviewed-on: https://go-review.googlesource.com/c/go/+/437955 Reviewed-by: Cherry Mui <cherryyz@google.com> Reviewed-by: Keith Randall <khr@golang.org> LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
2023-10-14runtime: use real type size in map keys and values functionsIan Lance Taylor
We were using the size stored in the map, which is the smaller of the real type size and 128. As of CL 61538 we don't use these functions, but we expect to use them again in the future after #61626 is resolved. Change-Id: I7bfb4af5f0e3a56361d4019a8ed7c1ec59ff31fd Reviewed-on: https://go-review.googlesource.com/c/go/+/535215 LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com> Reviewed-by: Keith Randall <khr@golang.org> Reviewed-by: Ian Lance Taylor <iant@google.com> Auto-Submit: Ian Lance Taylor <iant@google.com> Reviewed-by: Keith Randall <khr@google.com>
2023-10-09map: use correct load factor for deciding when to growKeith Randall
The correct load factor is 6.5, not 6. This got broken by accident in CL 462115. Fixes #63438 Change-Id: Ib07bb6ab6103aec87cb775bc06bd04362a64e489 Reviewed-on: https://go-review.googlesource.com/c/go/+/533279 Reviewed-by: David Chase <drchase@google.com> Reviewed-by: Keith Randall <khr@google.com> Reviewed-by: Cuong Manh Le <cuong.manhle.vn@gmail.com> LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
2023-08-25runtime: fix maps.Clone bug when cloning a map mid-growKeith Randall
Fixes #62203 Change-Id: I0459d3f481b0cd20102f6d9fd3ea84335a7739a8 Reviewed-on: https://go-review.googlesource.com/c/go/+/522317 Reviewed-by: Cuong Manh Le <cuong.manhle.vn@gmail.com> Reviewed-by: Keith Randall <khr@google.com> Reviewed-by: Bryan Mills <bcmills@google.com> Run-TryBot: Keith Randall <khr@golang.org> TryBot-Result: Gopher Robot <gobot@golang.org>
2023-08-09runtime: improve performance of empty map with interface key typecuiweixie
name old time/op new time/op delta MegEmptyMapWithInterfaceKey-10 15.5µs ± 0% 0.0µs ± 0% -99.97% (p=0.000 n=20+16) name old alloc/op new alloc/op delta MegEmptyMapWithInterfaceKey-10 0.00B 0.00B ~ (all equal) name old allocs/op new allocs/op delta MegEmptyMapWithInterfaceKey-10 0.00 0.00 ~ (all equal) Change-Id: I46248223100e98b7877464da640075d272c14802 Reviewed-on: https://go-review.googlesource.com/c/go/+/502075 Reviewed-by: Keith Randall <khr@google.com> Run-TryBot: xie cui <523516579@qq.com> Reviewed-by: Heschi Kreinick <heschi@google.com> TryBot-Result: Gopher Robot <gobot@golang.org> Reviewed-by: Keith Randall <khr@golang.org>
2023-05-24maps,runtime: improve maps.Valuescuiweixie
name old time/op new time/op delta Values-10 8.67ms ± 0% 7.19ms ± 2% -17.05% (p=0.000 n=9+10) name old alloc/op new alloc/op delta Values-10 58.2kB ± 2% 48.3kB ± 2% -17.14% (p=0.000 n=9+10) name old allocs/op new allocs/op delta Values-10 0.00 0.00 ~ (all equal) Change-Id: Idd35ea37514a21d97bdd6191c8fb8a478c00e414 Reviewed-on: https://go-review.googlesource.com/c/go/+/481436 Reviewed-by: Keith Randall <khr@golang.org> Run-TryBot: xie cui <523516579@qq.com> Reviewed-by: Keith Randall <khr@google.com> Reviewed-by: Ian Lance Taylor <iant@google.com> TryBot-Result: Gopher Robot <gobot@golang.org> Auto-Submit: Keith Randall <khr@golang.org>
2023-05-19maps,runtime: improve maps.Keyscuiweixie
name old time/op new time/op delta Keys-10 8.65ms ± 0% 7.06ms ± 0% -18.41% (p=0.000 n=9+9) name old alloc/op new alloc/op delta Keys-10 58.2kB ± 1% 47.4kB ± 2% -18.54% (p=0.000 n=10+10) name old allocs/op new allocs/op delta Keys-10 0.00 0.00 ~ (all equal) Change-Id: Ia7061c37be89e906e79bc3ef3bb1ef0d7913f9f6 Reviewed-on: https://go-review.googlesource.com/c/go/+/481435 Reviewed-by: Keith Randall <khr@golang.org> TryBot-Result: Gopher Robot <gobot@golang.org> Reviewed-by: Keith Randall <khr@google.com> Reviewed-by: Heschi Kreinick <heschi@google.com> Run-TryBot: xie cui <523516579@qq.com>
2023-05-12reflect: allow Value be stack allocatedCherry Mui
Currently, reflect.ValueOf forces the referenced object to be heap allocated. This CL makes it possible to be stack allocated. We need to be careful to make sure the compiler's escape analysis can do the right thing, e.g. channel send, map assignment, unsafe pointer conversions. Tests will be added in a later CL. CL 408827 might help ensure the correctness. Change-Id: I8663651370c7c8108584902235062dd2b3f65954 Reviewed-on: https://go-review.googlesource.com/c/go/+/408826 Run-TryBot: Cherry Mui <cherryyz@google.com> Reviewed-by: David Chase <drchase@google.com> TryBot-Result: Gopher Robot <gobot@golang.org> Reviewed-by: Austin Clements <austin@google.com>
2023-05-11runtime: move per-type types to internal/abiDavid Chase
Change-Id: I1f031f0f83a94bebe41d3978a91a903dc5bcda66 Reviewed-on: https://go-review.googlesource.com/c/go/+/489276 Reviewed-by: Keith Randall <khr@google.com> Reviewed-by: Keith Randall <khr@golang.org> Run-TryBot: David Chase <drchase@google.com> TryBot-Result: Gopher Robot <gobot@golang.org>
2023-05-05internal/abi: refactor (basic) type struct into one definitionDavid Chase
This touches a lot of files, which is bad, but it is also good, since there's N copies of this information commoned into 1. The new files in internal/abi are copied from the end of the stack; ultimately this will all end up being used. Change-Id: Ia252c0055aaa72ca569411ef9f9e96e3d610889e Reviewed-on: https://go-review.googlesource.com/c/go/+/462995 TryBot-Result: Gopher Robot <gobot@golang.org> Reviewed-by: Carlos Amedee <carlos@golang.org> Run-TryBot: David Chase <drchase@google.com> Reviewed-by: Keith Randall <khr@golang.org>
2023-04-13maps,runtime: improve maps.Clonecuiweixie
name old time/op new time/op delta MapClone-10 65.8ms ± 7% 10.3ms ± 2% -84.30% (p=0.000 n=10+9) name old alloc/op new alloc/op delta MapClone-10 40.2MB ± 0% 40.5MB ± 0% +0.57% (p=0.000 n=10+9) name old allocs/op new allocs/op delta MapClone-10 20.0 ± 0% 23.0 ± 0% +15.00% (p=0.000 n=10+10) Updates #58740. Change-Id: I148501e723cb2124f02045400e7ceb36af0871c8 Reviewed-on: https://go-review.googlesource.com/c/go/+/471400 Reviewed-by: Heschi Kreinick <heschi@google.com> TryBot-Result: Gopher Robot <gobot@golang.org> Reviewed-by: Keith Randall <khr@golang.org> Run-TryBot: xie cui <523516579@qq.com> Reviewed-by: Keith Randall <khr@google.com>
2023-04-08runtime: mark map bucket slots as empty during map clearCuong Manh Le
So iterators that are in progress can know entries have been deleted and terminate the iterator properly. Update #55002 Update #56351 Fixes #59411 Change-Id: I924f16a00fe4ed6564f730a677348a6011d3fb67 Reviewed-on: https://go-review.googlesource.com/c/go/+/481935 Reviewed-by: Keith Randall <khr@golang.org> Auto-Submit: Cuong Manh Le <cuong.manhle.vn@gmail.com> Run-TryBot: Cuong Manh Le <cuong.manhle.vn@gmail.com> Reviewed-by: Michael Knyszek <mknyszek@google.com> Reviewed-by: Keith Randall <khr@google.com> TryBot-Result: Gopher Robot <gobot@golang.org>
2023-02-06cmd/link: linker portion of dead map removalThan McIntosh
This patch contains the linker changes needed to enable deadcoding of large unreferenced map variables, in combination with a previous compiler change. We add a new cleanup function that runs just after deadcode that looks for relocations in "init" funcs that are weak, of type R_CALL (and siblings), and are targeting an unreachable function. If we find such a relocation, after checking to make sure it targets a map.init.XXX helper, we redirect the relocation to a point to a no-op routine ("mapinitnoop") in the runtime. Compilebench results for this change: │ out.base.txt │ out.wrap.txt │ │ sec/op │ sec/op vs base │ Template 218.6m ± 2% 221.1m ± 1% ~ (p=0.129 n=39) Unicode 180.5m ± 1% 178.9m ± 1% -0.93% (p=0.006 n=39) GoTypes 1.162 ± 1% 1.156 ± 1% ~ (p=0.850 n=39) Compiler 143.6m ± 1% 142.6m ± 1% ~ (p=0.743 n=39) SSA 8.698 ± 1% 8.719 ± 1% ~ (p=0.145 n=39) Flate 142.6m ± 1% 143.9m ± 3% ~ (p=0.287 n=39) GoParser 247.7m ± 1% 248.8m ± 1% ~ (p=0.265 n=39) Reflect 588.0m ± 1% 590.4m ± 1% ~ (p=0.269 n=39) Tar 198.5m ± 1% 201.3m ± 1% +1.38% (p=0.005 n=39) XML 259.1m ± 1% 260.0m ± 1% ~ (p=0.376 n=39) LinkCompiler 746.8m ± 2% 747.8m ± 1% ~ (p=0.706 n=39) ExternalLinkCompiler 1.906 ± 0% 1.902 ± 1% ~ (p=0.207 n=40) LinkWithoutDebugCompiler 522.4m ± 21% 471.1m ± 1% -9.81% (p=0.000 n=40) StdCmd 21.32 ± 0% 21.39 ± 0% +0.32% (p=0.035 n=40) geomean 609.2m 606.0m -0.53% │ out.base.txt │ out.wrap.txt │ │ user-sec/op │ user-sec/op vs base │ Template 401.9m ± 3% 406.9m ± 2% ~ (p=0.291 n=39) Unicode 191.9m ± 6% 196.1m ± 3% ~ (p=0.052 n=39) GoTypes 3.967 ± 3% 4.056 ± 1% ~ (p=0.099 n=39) Compiler 171.1m ± 3% 173.4m ± 3% ~ (p=0.415 n=39) SSA 30.04 ± 4% 30.25 ± 4% ~ (p=0.106 n=39) Flate 246.3m ± 3% 248.9m ± 4% ~ (p=0.499 n=39) GoParser 518.7m ± 1% 520.6m ± 2% ~ (p=0.531 n=39) Reflect 1.670 ± 1% 1.656 ± 2% ~ (p=0.137 n=39) Tar 352.7m ± 2% 360.3m ± 2% ~ (p=0.117 n=39) XML 528.8m ± 2% 521.1m ± 2% ~ (p=0.296 n=39) LinkCompiler 1.128 ± 2% 1.140 ± 2% ~ (p=0.324 n=39) ExternalLinkCompiler 2.165 ± 2% 2.147 ± 2% ~ (p=0.537 n=40) LinkWithoutDebugCompiler 484.2m ± 4% 490.7m ± 3% ~ (p=0.897 n=40) geomean 818.5m 825.1m +0.80% │ out.base.txt │ out.wrap.txt │ │ text-bytes │ text-bytes vs base │ HelloSize 766.0Ki ± 0% 766.0Ki ± 0% ~ (p=1.000 n=40) ¹ CmdGoSize 10.02Mi ± 0% 10.02Mi ± 0% -0.03% (n=40) geomean 2.738Mi 2.738Mi -0.01% ¹ all samples are equal │ out.base.txt │ out.wrap.txt │ │ data-bytes │ data-bytes vs base │ HelloSize 14.17Ki ± 0% 14.17Ki ± 0% ~ (p=1.000 n=40) ¹ CmdGoSize 308.3Ki ± 0% 298.5Ki ± 0% -3.19% (n=40) geomean 66.10Ki 65.04Ki -1.61% ¹ all samples are equal │ out.base.txt │ out.wrap.txt │ │ bss-bytes │ bss-bytes vs base │ HelloSize 197.3Ki ± 0% 197.3Ki ± 0% ~ (p=1.000 n=40) ¹ CmdGoSize 228.2Ki ± 0% 228.1Ki ± 0% -0.01% (n=40) geomean 212.2Ki 212.1Ki -0.01% ¹ all samples are equal │ out.base.txt │ out.wrap.txt │ │ exe-bytes │ exe-bytes vs base │ HelloSize 1.192Mi ± 0% 1.192Mi ± 0% +0.00% (p=0.000 n=40) CmdGoSize 14.85Mi ± 0% 14.83Mi ± 0% -0.09% (n=40) geomean 4.207Mi 4.205Mi -0.05% Also tested for any linker changes by benchmarking relink of k8s "kubelet"; no changes to speak of there. Updates #2559. Updates #36021. Updates #14840. Change-Id: I4cc5370b3f20679a1065aaaf87bdf2881e257631 Reviewed-on: https://go-review.googlesource.com/c/go/+/463395 Run-TryBot: Than McIntosh <thanm@google.com> Reviewed-by: Cherry Mui <cherryyz@google.com> TryBot-Result: Gopher Robot <gobot@golang.org>
2023-01-30reflect,runtime: add Value.ClearCuong Manh Le
Fixes #55002 Change-Id: I7d0f14cc54f67f2769b51d2efafc4ae3714f0e3d Reviewed-on: https://go-review.googlesource.com/c/go/+/457895 Reviewed-by: Keith Randall <khr@golang.org> Reviewed-by: Ian Lance Taylor <iant@google.com> Auto-Submit: Cuong Manh Le <cuong.manhle.vn@gmail.com> Reviewed-by: Keith Randall <khr@google.com> Run-TryBot: Cuong Manh Le <cuong.manhle.vn@gmail.com> TryBot-Result: Gopher Robot <gobot@golang.org>
2023-01-23internal/abi,runtime: refactor map constants into one placeDavid Chase
Previously TryBot-tested with bucket bits = 4. Also tested locally with bucket bits = 5. This makes it much easier to change the size of map buckets, and hopefully provides pointers to all the code that in some way depends on details of map layout. Change-Id: I9f6669d1eadd02f182d0bc3f959dc5f385fa1683 Reviewed-on: https://go-review.googlesource.com/c/go/+/462115 TryBot-Result: Gopher Robot <gobot@golang.org> Run-TryBot: David Chase <drchase@google.com> Reviewed-by: Austin Clements <austin@google.com>
2022-11-18all: add missing periods in commentscui fliter
Change-Id: I69065f8adf101fdb28682c55997f503013a50e29 Reviewed-on: https://go-review.googlesource.com/c/go/+/449757 Auto-Submit: Ian Lance Taylor <iant@google.com> Reviewed-by: Joedian Reid <joedian@golang.org> Reviewed-by: Keith Randall <khr@google.com> Reviewed-by: Keith Randall <khr@golang.org> TryBot-Result: Gopher Robot <gobot@golang.org> Run-TryBot: Joedian Reid <joedian@golang.org> Run-TryBot: Ian Lance Taylor <iant@google.com> Reviewed-by: Ian Lance Taylor <iant@google.com>
2022-04-28runtime: differentiate "user" and "system" throwsMichael Pratt
"User" throws are throws due to some invariant broken by the application. "System" throws are due to some invariant broken by the runtime, environment, etc (i.e., not the fault of the application). This CL sends "user" throws through the new fatal. Currently this function is identical to throw, but with a different name to clearly differentiate the throw type in the stack trace, and hopefully be a bit more clear to users what it means. This CL changes a few categories of throw to fatal: 1. Concurrent map read/write. 2. Deadlock detection. 3. Unlock of unlocked sync.Mutex. 4. Inconsistent results from syscall.AllThreadsSyscall. "Thread exhaustion" and "out of memory" (usually address space full) throws are additional throws that are arguably the fault of user code, but I've left off for now because there is no specific invariant that they have broken to get into these states. For #51485 Change-Id: I713276a6c290fd34a6563e6e9ef378669d74ae32 Reviewed-on: https://go-review.googlesource.com/c/go/+/390420 TryBot-Result: Gopher Robot <gobot@golang.org> Reviewed-by: Austin Clements <austin@google.com> Run-TryBot: Michael Pratt <mpratt@google.com>
2022-04-21runtime: use fastrand64 in mapiterinitzhangyunhao
Change-Id: I5698c7576a0f39ae62de7bea64286ac8e578d421 Reviewed-on: https://go-review.googlesource.com/c/go/+/400916 Reviewed-by: Keith Randall <khr@golang.org> Reviewed-by: Keith Randall <khr@google.com> Reviewed-by: Ian Lance Taylor <iant@google.com> Run-TryBot: Wayne Zuo <wdvxdr@golangcn.org> TryBot-Result: Gopher Robot <gobot@golang.org>
2021-11-02runtime, syscall: add calls to asan functionsfanzha02
Add explicit address sanitizer instrumentation to the runtime and syscall packages. The compiler does not instrument the runtime package. It does instrument the syscall package, but we need to add a couple of cases that it can't see. Refer to the implementation of the asan malloc runtime library, this patch also allocates extra memory as the redzone, around the returned memory region, and marks the redzone as unaddressable to detect the overflows or underflows. Updates #44853. Change-Id: I2753d1cc1296935a66bf521e31ce91e35fcdf798 Reviewed-on: https://go-review.googlesource.com/c/go/+/298614 Run-TryBot: Ian Lance Taylor <iant@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org> Trust: fannie zhang <Fannie.Zhang@arm.com>
2021-09-11reflect: optimize for maps with string keysJoe Tsai
Over 80% of all Go map types use a string as the key. The Go runtime already has a specialized implementation for such maps in runtime/map_faststr.go. However, the Go reflection implementation has not historically made use of that implementation. This CL plumbs the appropriate logic to be accessible from Go reflection so that it can benefit as well. name old time/op new time/op delta Map/StringKeys/MapIndex-4 4.65us ± 5% 2.95us ± 3% -36.50% (p=0.016 n=4+5) Map/StringKeys/SetMapIndex-4 7.47us ± 5% 5.27us ± 2% -29.40% (p=0.008 n=5+5) Map/Uint64Keys/MapIndex-4 3.79us ± 3% 3.75us ± 2% ~ (p=0.548 n=5+5) Map/Uint64Keys/SetMapIndex-4 6.13us ± 3% 6.09us ± 1% ~ (p=0.746 n=5+5) Change-Id: I5495d48948d8caf2d004a03ae1820ab5f8729670 Reviewed-on: https://go-review.googlesource.com/c/go/+/345486 Trust: Joe Tsai <joetsai@digital-static.net> Run-TryBot: Joe Tsai <joetsai@digital-static.net> TryBot-Result: Go Bot <gobot@golang.org> Reviewed-by: Keith Randall <khr@golang.org>
2021-09-05reflect: allocate hiter as part of MapIterJosh Bleecher Snyder
This reduces the number of allocations per reflect map iteration from two to one. For #46293 Change-Id: Ibcff5f42fc512e637b6e460bad4518e7ac83d4c3 Reviewed-on: https://go-review.googlesource.com/c/go/+/321889 Trust: Josh Bleecher Snyder <josharian@gmail.com> Run-TryBot: Josh Bleecher Snyder <josharian@gmail.com> TryBot-Result: Go Bot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org> Reviewed-by: Keith Randall <khr@golang.org>
2021-06-17[dev.typeparams] runtime: fix import sort order [generated]Michael Anthony Knyszek
[git-generate] cd src/runtime goimports -w *.go Change-Id: I1387af0f2fd1a213dc2f4c122e83a8db0fcb15f0 Reviewed-on: https://go-review.googlesource.com/c/go/+/329189 Trust: Michael Knyszek <mknyszek@google.com> Run-TryBot: Michael Knyszek <mknyszek@google.com> Reviewed-by: Matthew Dempsky <mdempsky@google.com> TryBot-Result: Go Bot <gobot@golang.org>
2021-06-17[dev.typeparams] runtime: replace uses of runtime/internal/sys.PtrSize with ↵Michael Anthony Knyszek
internal/goarch.PtrSize [generated] [git-generate] cd src/runtime/internal/math gofmt -w -r "sys.PtrSize -> goarch.PtrSize" . goimports -w *.go cd ../.. gofmt -w -r "sys.PtrSize -> goarch.PtrSize" . goimports -w *.go Change-Id: I43491cdd54d2e06d4d04152b3d213851b7d6d423 Reviewed-on: https://go-review.googlesource.com/c/go/+/328337 Trust: Michael Knyszek <mknyszek@google.com> Run-TryBot: Michael Knyszek <mknyszek@google.com> TryBot-Result: Go Bot <gobot@golang.org> Reviewed-by: Matthew Dempsky <mdempsky@google.com>
2021-05-21[dev.typeparams] runtime: replace funcPC with internal/abi.FuncPCABIInternalCherry Mui
At this point all funcPC references are ABIInternal functions. Replace with the intrinsics. Change-Id: I3ba7e485c83017408749b53f92877d3727a75e27 Reviewed-on: https://go-review.googlesource.com/c/go/+/321954 Trust: Cherry Mui <cherryyz@google.com> Run-TryBot: Cherry Mui <cherryyz@google.com> TryBot-Result: Go Bot <gobot@golang.org> Reviewed-by: Michael Knyszek <mknyszek@google.com>
2021-04-11runtime: simplify syntax for pointer arithmetic in mapaccess functionsDan Kortschak
This harmonizes the syntax between mapaccess1 and mapaccess2, and simplifies the code. Change-Id: I6db25ffdc871018d399f9030259894b3994c5793 Reviewed-on: https://go-review.googlesource.com/c/go/+/308951 Reviewed-by: Keith Randall <khr@golang.org> Run-TryBot: Keith Randall <khr@golang.org> Trust: Emmanuel Odeke <emmanuel@orijtech.com> TryBot-Result: Go Bot <gobot@golang.org>
2021-04-07runtime/map: update comment for gc/reflectMakdon
update comment cause gc/reflect.go has been moved to reflectdata/reflect.go In the commit (attach below), gc/reflect.go is moved to reflectdata/reflect.go So the comment referring gc/reflect.go should be updated to reflectdata/reflect.go There maybe other places that refers gc/reflect.go that should be updated. I would work around it soon. commit: https://github.com/golang/go/commit/de65151e507e7b3c8e46d74f223d7c562177bedc https://github.com/golang/go/commit/e4895ab4c0eb44de6ddc5dc8d860a827b20d2781 Change-Id: Ieed5c48049ffe6889c08e164972fc7825653ac05 GitHub-Last-Rev: eec9c2328d0be40842c3994f26f26f03fa650a91 GitHub-Pull-Request: golang/go#45421 Reviewed-on: https://go-review.googlesource.com/c/go/+/307930 Reviewed-by: Keith Randall <khr@golang.org> Trust: Emmanuel Odeke <emmanuel@orijtech.com>
2020-11-05runtime: fix file references in hiter's commentsVee Zhang
The file "cmd/internal/gc/range.go" does not exist, but should be "cmd/compile/internal/gc/range.go". Change-Id: I26e5560b9d0b7eea8502c6b375e45fc87aed1276 GitHub-Last-Rev: 5f19dca7e9dab942a54257c5da05bce780744b19 GitHub-Pull-Request: golang/go#42391 Reviewed-on: https://go-review.googlesource.com/c/go/+/267837 Reviewed-by: Ian Lance Taylor <iant@golang.org> Trust: Emmanuel Odeke <emmanuel@orijtech.com>
2020-09-30runtime: code cleanup about mapmengxiaodong
1.Revise ambiguous comments: "all current buckets" means buckets in hmap.buckets, actually current bucket and all the overflow buckets connected to it are full 2.All the pointer address add use src/runtime/stubs.go:add, keep the code style uniform Change-Id: Idc7224dbe6c391e1b03bf5d009c3734bc75187ce Reviewed-on: https://go-review.googlesource.com/c/go/+/257979 Reviewed-by: Austin Clements <austin@google.com> Reviewed-by: Keith Randall <khr@golang.org> Run-TryBot: Austin Clements <austin@google.com> TryBot-Result: Go Bot <gobot@golang.org>
generated by cgit v1.3 (git 2.53.0) at 2026-04-15 16:13:20 +0000