package goexperiment

Import Path
	internal/goexperiment (on golang.org and go.dev)

Dependency Relation
	imports 0 packages, and imported by 3 packages

Involved Source Files exp_fieldtrack_off.go exp_preemptibleloops_off.go exp_regabi_off.go exp_regabiargs_on.go exp_regabidefer_on.go exp_regabig_on.go exp_regabireflect_on.go exp_regabiwrappers_on.go exp_staticlockranking_off.go Package goexperiment implements support for toolchain experiments. Toolchain experiments are controlled by the GOEXPERIMENT environment variable. GOEXPERIMENT is a comma-separated list of experiment names. GOEXPERIMENT can be set at make.bash time, which sets the default experiments for binaries built with the tool chain; or it can be set at build time. GOEXPERIMENT can also be set to "none", which disables any experiments that were enabled at make.bash time. Experiments are exposed to the build in the following ways: - Build tag goexperiment.x is set if experiment x (lower case) is enabled. - For each experiment x (in camel case), this package contains a boolean constant x and an integer constant xInt. - In runtime assembly, the macro GOEXPERIMENT_x is defined if experiment x (lower case) is enabled. In the toolchain, the set of experiments enabled for the current build should be accessed via objabi.Experiment. The set of experiments is included in the output of runtime.Version() and "go version <binary>" if it differs from the default experiments. For the set of experiments supported by the current toolchain, see "go doc goexperiment.Flags". Note that this package defines the set of experiments (in Flags) and records the experiments that were enabled when the package was compiled (as boolean and integer constants). Note especially that this package does not itself change behavior at run time based on the GOEXPERIMENT variable. The code used in builds to interpret the GOEXPERIMENT variable is in the separate package internal/buildcfg.
Package-Level Type Names (only one)
/* sort by: | */
Flags is the set of experiments that can be enabled or disabled in the current toolchain. When specified in the GOEXPERIMENT environment variable or as build tags, experiments use the strings.ToLower of their field name. For the baseline experimental configuration, see objabi.experimentBaseline. If you change this struct definition, run "go generate". FieldTrack bool PreemptibleLoops bool RegabiArgs enables register arguments/results in all compiled Go functions. Requires wrappers (to do ABI translation), g (because runtime assembly that's been ported to ABIInternal uses the G register), reflect (so reflection calls use registers), and defer (because the runtime doesn't support passing register arguments to defer/go). RegabiDefer enables desugaring defer and go calls into argument-less closures. RegabiG enables dedicated G and zero registers in ABIInternal. Requires wrappers because it makes the ABIs incompatible. RegabiReflect enables the register-passing paths in reflection calls. This is also gated by intArgRegs in reflect and runtime (which are disabled by default) so it can be used in targeted tests. RegabiWrappers enables ABI wrappers for calling between ABI0 and ABIInternal functions. Without this, the ABIs are assumed to be identical so cross-ABI calls are direct. StaticLockRanking bool func internal/buildcfg.ParseGOEXPERIMENT(goos, goarch, goexp string) (flags, baseline Flags, err error) var internal/buildcfg.Experiment
Package-Level Constants (total 18)
const FieldTrack = false
const FieldTrackInt = 0
const PreemptibleLoops = false
const Regabi = false
const RegabiArgs = true
const RegabiArgsInt = 1
const RegabiDefer = true
const RegabiDeferInt = 1
const RegabiG = true
const RegabiGInt = 1
const RegabiInt = 0
const RegabiReflect = true
const RegabiReflectInt = 1
const RegabiWrappers = true
const StaticLockRanking = false