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compiler: use hash calculation for determining archive staleness #805

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compiler: use hash calculation for determining archive staleness #805

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e807fdb
compiler: use hash calculation for determining staleness
myitcv Apr 23, 2018
e615455
Add --bv flag to test to log verbose build context messages
myitcv Apr 23, 2018
69257f7
Add build tags to the hash
myitcv Apr 23, 2018
f6baa10
More readable version of hash for debug purposes
myitcv Apr 23, 2018
41c38df
Fix file closing
myitcv Apr 23, 2018
d73d4bb
Address feedback from hajimehoshi
myitcv Apr 23, 2018
9c06cba
Refactor to prefer defers for Close
myitcv Apr 23, 2018
82f8b60
Further refactor to use defer for close
myitcv Apr 23, 2018
2e40249
Use better key name for gopherjs binary hash
myitcv Apr 23, 2018
3d5665a
Move compiler hash calc to init phase
myitcv Apr 24, 2018
5c358e3
Remove --bv flag on test
myitcv Apr 24, 2018
1ed4e6a
Add basic test of new hash staleness
myitcv Apr 28, 2018
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Fix file closing
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@myitcv
myitcv committed May 4, 2018
commit 41c38df9de9cbee94e3cf402b9b13585722cd804
5 changes: 3 additions & 2 deletions build/build.go
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Original file line number Diff line number Diff line change
Expand Up @@ -608,10 +608,10 @@ func (s *Session) BuildPackage(pkg *PackageData) (*compiler.Archive, error) {
if err != nil {
return nil, fmt.Errorf("could not open %v: %v", binPath, err)
}
defer binFile.Close()

binHash := sha256.New()
io.Copy(binHash, binFile)
binFile.Close()
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@hajimehoshi hajimehoshi Apr 23, 2018

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Actually (*File).Close doesn't usually cause error (if error happens, this is a critical error), but checking error is not bad here?

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@myitcv myitcv Apr 23, 2018

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I'd agree; if that fails we're in serious trouble. I think I'll leave this.

fmt.Fprintf(pkgHash, "gopherjs bin: %#x\n", binHash.Sum(nil))

orderedBuildTags := append([]string{}, s.options.BuildTags...)
Expand Down Expand Up @@ -656,6 +656,7 @@ func (s *Session) BuildPackage(pkg *PackageData) (*compiler.Archive, error) {
}
fmt.Fprintf(pkgHash, "file: %v\n", fp)
n, _ := io.Copy(pkgHash, file)
file.Close()
fmt.Fprintf(pkgHash, "%d bytes\n", n)
}

Expand All @@ -671,9 +672,9 @@ func (s *Session) BuildPackage(pkg *PackageData) (*compiler.Archive, error) {
}
return nil, err
}
defer objFile.Close()

archive, err := compiler.ReadArchive(pkg.PkgObj, pkg.ImportPath, objFile, s.Types)
objFile.Close()
if err != nil {
return nil, err
}
Expand Down