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all: add the Boehm-Demers-Weiser GC on Linux

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This adds support for the well-known Boehm GC. It's significantly faster
than our own naive GC and could be used as an alternative on bigger
systems.

In the future, this GC might also be supported on WebAssembly with some
extra work. Right now it's Linux only (though Windows/MacOS shouldn't be
too difficult to add).
This commit is contained in:
Ayke van Laethem
2023-08-13 23:32:45 +02:00
committed by Ron Evans
parent a4cbe3326e
commit 3a7c25f987
16 changed files with 383 additions and 74 deletions
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builder/build.go
+22 -7
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@@ -147,20 +147,22 @@ func Build(pkgName, outpath, tmpdir string, config *compileopts.Config) (BuildRe
// the libc needs them.
root := goenv.Get("TINYGOROOT")
var libcDependencies []*compileJob
var libcJob *compileJob
switch config.Target.Libc {
case "darwin-libSystem":
job := makeDarwinLibSystemJob(config, tmpdir)
libcDependencies = append(libcDependencies, job)
case "musl":
job, unlock, err := libMusl.load(config, tmpdir)
var unlock func()
libcJob, unlock, err = libMusl.load(config, tmpdir, nil)
if err != nil {
return BuildResult{}, err
}
defer unlock()
libcDependencies = append(libcDependencies, dummyCompileJob(filepath.Join(filepath.Dir(job.result), "crt1.o")))
libcDependencies = append(libcDependencies, job)
libcDependencies = append(libcDependencies, dummyCompileJob(filepath.Join(filepath.Dir(libcJob.result), "crt1.o")))
libcDependencies = append(libcDependencies, libcJob)
case "picolibc":
libcJob, unlock, err := libPicolibc.load(config, tmpdir)
libcJob, unlock, err := libPicolibc.load(config, tmpdir, nil)
if err != nil {
return BuildResult{}, err
}
@@ -173,14 +175,14 @@ func Build(pkgName, outpath, tmpdir string, config *compileopts.Config) (BuildRe
}
libcDependencies = append(libcDependencies, dummyCompileJob(path))
case "wasmbuiltins":
libcJob, unlock, err := libWasmBuiltins.load(config, tmpdir)
libcJob, unlock, err := libWasmBuiltins.load(config, tmpdir, nil)
if err != nil {
return BuildResult{}, err
}
defer unlock()
libcDependencies = append(libcDependencies, libcJob)
case "mingw-w64":
job, unlock, err := libMinGW.load(config, tmpdir)
job, unlock, err := libMinGW.load(config, tmpdir, nil)
if err != nil {
return BuildResult{}, err
}
@@ -701,7 +703,7 @@ func Build(pkgName, outpath, tmpdir string, config *compileopts.Config) (BuildRe
// Add compiler-rt dependency if needed. Usually this is a simple load from
// a cache.
if config.Target.RTLib == "compiler-rt" {
job, unlock, err := libCompilerRT.load(config, tmpdir)
job, unlock, err := libCompilerRT.load(config, tmpdir, nil)
if err != nil {
return result, err
}
@@ -709,6 +711,19 @@ func Build(pkgName, outpath, tmpdir string, config *compileopts.Config) (BuildRe
linkerDependencies = append(linkerDependencies, job)
}
// The Boehm collector is stored in a separate C library.
if config.GC() == "boehm" {
if libcJob == nil {
return BuildResult{}, fmt.Errorf("boehm GC isn't supported with libc %s", config.Target.Libc)
}
job, unlock, err := BoehmGC.load(config, tmpdir, libcJob)
if err != nil {
return BuildResult{}, err
}
defer unlock()
linkerDependencies = append(linkerDependencies, job)
}
// Add jobs to compile extra files. These files are in C or assembly and
// contain things like the interrupt vector table and low level operations
// such as stack switching.