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extractor modification

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This commit is contained in:
Paul Naert 2018-05-10 13:44:59 -07:00
parent a2fff80cfe
commit 34014a65af
1 changed files with 60 additions and 4 deletions
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64
shared/extractor.go
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@ -41,6 +41,7 @@ import (
"os"
"path"
"path/filepath"
"reflect"
"runtime"
"sort"
"strconv"
@ -200,7 +201,9 @@ func parseSwitches() (ea extractionArgs) {
func handleExecutable(ea extractionArgs) {
artifactPaths := ea.Extractor(ea.InputFile)
LogInfo("handleExecutable: artifactPaths = %v\n", artifactPaths)
if len(artifactPaths) < 20 { //naert: to avoid saturating the log when dealing with big file lists
LogInfo("handleExecutable: artifactPaths = %v\n", artifactPaths)
}
if len(artifactPaths) == 0 {
return
@ -442,18 +445,71 @@ func archiveBcFiles(ea extractionArgs, bcFiles []string) {
LogWarning("Built bitcode archive: %s.", ea.OutputFile)
}
func getsize(stringslice []string) (totalLength int) {
totalLength = 0
for _, s := range stringslice {
totalLength += len(s)
}
return totalLength
}
func extractTimeLinkFiles(ea extractionArgs, filesToLink []string) {
var linkArgs []string
var tmpFileList []string
if ea.Verbose {
linkArgs = append(linkArgs, "-v")
}
linkArgs = append(linkArgs, "-o", ea.OutputFile)
linkArgs = append(linkArgs, filesToLink...)
// Create tmp dir
tmpDirName, err := ioutil.TempDir("", "glinking")
if err != nil {
LogFatal("The temporary directory in which to put temporary linking files could not be created.")
}
defer CheckDefer(func() error { return os.RemoveAll(tmpDirName) })
tmpFile, err := ioutil.TempFile(tmpDirName, "tmp")
if err != nil {
LogFatal("The temporary linking file could not be created.")
}
tmpFileList = append(tmpFileList, tmpFile.Name())
linkArgs = append(linkArgs, "-o", tmpFile.Name())
LogInfo("llvm-link argument size : %d, or %d", uintptr(len(filesToLink))*reflect.TypeOf(linkArgs).Elem().Size(), getsize(filesToLink))
for _, file := range filesToLink {
linkArgs = append(linkArgs, file)
if uintptr(len(linkArgs))*reflect.TypeOf(linkArgs).Elem().Size() > 280000 { //Actual maximum argument size for llvm-link is probably around 256KB
LogInfo("Linking command size exceeding system capacity : splitting the command")
success, err := execCmd(ea.LinkerName, linkArgs, "")
if !success {
LogFatal("There was an error linking input files into %s because %v, on file %s.\n", ea.OutputFile, err, file)
}
linkArgs = nil
if ea.Verbose {
linkArgs = append(linkArgs, "-v")
}
tmpFile, err := ioutil.TempFile(tmpDirName, "tmp")
tmpFileList = append(tmpFileList, tmpFile.Name())
linkArgs = append(linkArgs, "-o", tmpFile.Name())
}
}
success, err := execCmd(ea.LinkerName, linkArgs, "")
if !success {
LogFatal("There was an error linking input files into %s because %v.\n", tmpFile.Name(), err)
}
linkArgs = nil
if ea.Verbose {
linkArgs = append(linkArgs, "-v")
}
linkArgs = append(linkArgs, tmpFileList...)
linkArgs = append(linkArgs, "-o", ea.OutputFile)
success, err = execCmd(ea.LinkerName, linkArgs, "")
if !success {
LogFatal("There was an error linking input files into %s because %v.\n", ea.OutputFile, err)
}
LogWarning("Bitcode file extracted to: %s.", ea.OutputFile)
LogWarning("Bitcode file extracted to: %s, from files %v \n", ea.OutputFile, tmpFileList)
}
func extractSectionDarwin(inputFile string) (contents []string) {