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| author | David Chase <drchase@google.com> | 2020-10-14 13:05:33 -0400 |
|---|---|---|
| committer | David Chase <drchase@google.com> | 2021-01-27 21:55:30 +0000 |
| commit | 667e08ba8ccce4c00b0cde4a777030167295faf9 (patch) | |
| tree | 69c47ebbf5a0cb561c8d918220504fa2c3a11ce9 /src/cmd/go/internal/cfg/cfg.go | |
| parent | 9b636feafeecd627a72d95ba1fa637e162143027 (diff) | |
| download | go-667e08ba8ccce4c00b0cde4a777030167295faf9.tar.gz go-667e08ba8ccce4c00b0cde4a777030167295faf9.zip | |
[dev.regabi] cmd/go: Use GOMAXPROCS to limit default build, compile parallelism
When people want deterministic/single-process builds, they probably
assume that GOMAXPROCS=1 will do that. It currently does not,
neither for build parallelism nor for compiler internal parallelism.
(Current incantation for that is "go build -p=1 -gcflags=all=-c=1 ... ")
This CL makes
"GOMAXPROCS=1 go build ..."
behave like
"go build -p=1 -gcflags=all=-c=1 ... "
RELNOTE=yes
Change-Id: I9cfe50b7deee7334d2f1057b58385f6c98547b9f
Reviewed-on: https://go-review.googlesource.com/c/go/+/284695
Trust: David Chase <drchase@google.com>
Run-TryBot: David Chase <drchase@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Jeremy Faller <jeremy@golang.org>
Diffstat (limited to 'src/cmd/go/internal/cfg/cfg.go')
| -rw-r--r-- | src/cmd/go/internal/cfg/cfg.go | 24 |
1 files changed, 12 insertions, 12 deletions
diff --git a/src/cmd/go/internal/cfg/cfg.go b/src/cmd/go/internal/cfg/cfg.go index c48904eacc..322247962f 100644 --- a/src/cmd/go/internal/cfg/cfg.go +++ b/src/cmd/go/internal/cfg/cfg.go @@ -28,18 +28,18 @@ var ( BuildA bool // -a flag BuildBuildmode string // -buildmode flag BuildContext = defaultContext() - BuildMod string // -mod flag - BuildModExplicit bool // whether -mod was set explicitly - BuildModReason string // reason -mod was set, if set by default - BuildI bool // -i flag - BuildLinkshared bool // -linkshared flag - BuildMSan bool // -msan flag - BuildN bool // -n flag - BuildO string // -o flag - BuildP = runtime.NumCPU() // -p flag - BuildPkgdir string // -pkgdir flag - BuildRace bool // -race flag - BuildToolexec []string // -toolexec flag + BuildMod string // -mod flag + BuildModExplicit bool // whether -mod was set explicitly + BuildModReason string // reason -mod was set, if set by default + BuildI bool // -i flag + BuildLinkshared bool // -linkshared flag + BuildMSan bool // -msan flag + BuildN bool // -n flag + BuildO string // -o flag + BuildP = runtime.GOMAXPROCS(0) // -p flag + BuildPkgdir string // -pkgdir flag + BuildRace bool // -race flag + BuildToolexec []string // -toolexec flag BuildToolchainName string BuildToolchainCompiler func() string BuildToolchainLinker func() string |