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Some procedural abstraction and clean up.

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This commit is contained in:
Ian A. Mason 2018-05-11 07:13:13 -07:00
parent f497d4dee4
commit 4eadb3c7d1
3 changed files with 94 additions and 92 deletions
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62
shared/extractor.go
View File

@ -50,10 +50,10 @@ import (
)
type extractionArgs struct {
Verbose bool
WriteManifest bool
SortBitcodeFiles bool
BuildBitcodeArchive bool
Verbose bool // inform the user of what is going on
WriteManifest bool // write a manifest of bitcode files used
SortBitcodeFiles bool // sort the arguments to linking and archiving (debugging too)
BuildBitcodeModule bool // buld an archive rather than a module
KeepTemp bool // keep temporary linking folder
LinkArgSize int // maximum size of a llvm-link command line
InputType int
@ -95,7 +95,7 @@ func Extract(args []string) {
if ea.OutputFile == "" {
if ea.InputType == fileTypeARCHIVE || ea.InputType == fileTypeTHINARCHIVE {
var ext string
if ea.BuildBitcodeArchive {
if ea.BuildBitcodeModule {
ext = ".a.bc"
} else {
ext = ".bca"
@ -161,7 +161,7 @@ func parseSwitches() (ea extractionArgs) {
sortBitcodeFilesPtr := flag.Bool("s", false, "sort the bitcode files")
buildBitcodeArchive := flag.Bool("b", false, "build a bitcode module(FIXME? should this be archive)")
buildBitcodeModule := flag.Bool("b", false, "build a bitcode module")
outputFilePtr := flag.String("o", "", "the output file")
@ -169,7 +169,7 @@ func parseSwitches() (ea extractionArgs) {
linkerNamePtr := flag.String("l", "", "the llvm linker")
linkArgSizePtr := flag.Int("n", 0, "maximum llvm-link command line size")
linkArgSizePtr := flag.Int("n", 0, "maximum llvm-link command line size (in bytes)")
keepTempPtr := flag.Bool("t", false, "keep temporary linking folder")
@ -178,7 +178,7 @@ func parseSwitches() (ea extractionArgs) {
ea.Verbose = *verbosePtr
ea.WriteManifest = *writeManifestPtr
ea.SortBitcodeFiles = *sortBitcodeFilesPtr
ea.BuildBitcodeArchive = *buildBitcodeArchive
ea.BuildBitcodeModule = *buildBitcodeModule
ea.LinkArgSize = *linkArgSizePtr
ea.KeepTemp = *keepTempPtr
@ -192,7 +192,7 @@ func parseSwitches() (ea extractionArgs) {
LogInfo("ea.Verbose: %v\n", ea.Verbose)
LogInfo("ea.WriteManifest: %v\n", ea.WriteManifest)
LogInfo("ea.BuildBitcodeArchive: %v\n", ea.BuildBitcodeArchive)
LogInfo("ea.BuildBitcodeModule: %v\n", ea.BuildBitcodeModule)
LogInfo("ea.ArchiverName: %v\n", ea.ArchiverName)
LogInfo("ea.LinkerName: %v\n", ea.LinkerName)
LogInfo("ea.OutputFile: %v\n", ea.OutputFile)
@ -224,7 +224,8 @@ func parseSwitches() (ea extractionArgs) {
func handleExecutable(ea extractionArgs) {
artifactPaths := ea.Extractor(ea.InputFile)
if len(artifactPaths) < 20 { //naert: to avoid saturating the log when dealing with big file lists
if len(artifactPaths) < 20 {
// naert: to avoid saturating the log when dealing with big file lists
LogInfo("handleExecutable: artifactPaths = %v\n", artifactPaths)
}
@ -248,7 +249,7 @@ func handleExecutable(ea extractionArgs) {
writeManifest(ea, filesToLink, artifactPaths)
}
extractTimeLinkFiles(ea, filesToLink)
linkBitcodeFiles(ea, filesToLink)
}
func handleThinArchive(ea extractionArgs) {
@ -292,8 +293,8 @@ func handleThinArchive(ea extractionArgs) {
}
// Build archive
if ea.BuildBitcodeArchive {
extractTimeLinkFiles(ea, bcFiles)
if ea.BuildBitcodeModule {
linkBitcodeFiles(ea, bcFiles)
} else {
archiveBcFiles(ea, bcFiles)
}
@ -428,8 +429,8 @@ func handleArchive(ea extractionArgs) {
}
// Build archive
if ea.BuildBitcodeArchive {
extractTimeLinkFiles(ea, bcFiles)
if ea.BuildBitcodeModule {
linkBitcodeFiles(ea, bcFiles)
} else {
archiveBcFiles(ea, bcFiles)
}
@ -475,17 +476,14 @@ func getsize(stringslice []string) (totalLength int) {
}
return totalLength
}
func formatStdOut(stdout bytes.Buffer, usefulIndex int) string {
infoArr := strings.Split(stdout.String(), "\n")[usefulIndex]
ret := strings.Fields(infoArr)
return ret[0]
}
func extractTimeLinkFiles(ea extractionArgs, filesToLink []string) {
var linkArgs []string
var tmpFileList []string
var argMax int //llvm-link command line maximum size
// Extracting the command line max size from the environment if it is not specified
func fetchArgMax(ea extractionArgs) (argMax int) {
if ea.LinkArgSize == 0 {
getArgMax := exec.Command("getconf", "ARG_MAX")
var argMaxStr bytes.Buffer
@ -502,19 +500,19 @@ func extractTimeLinkFiles(ea extractionArgs, filesToLink []string) {
} else {
argMax = ea.LinkArgSize
}
if ea.Verbose {
linkArgs = append(linkArgs, "-v")
LogInfo("argMax = %v\n", argMax)
return
}
if getsize(filesToLink) > argMax { //command line size too large for the OS
func linkBitcodeFilesIncrementally(ea extractionArgs, filesToLink []string, argMax int, linkArgs []string) {
var tmpFileList []string
// 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.")
}
if !ea.KeepTemp { // delete temporary folder after used unless told otherwise
if !ea.KeepTemp {
// delete temporary folder after used unless told otherwise
LogInfo("Temporary folder will be deleted")
defer CheckDefer(func() error { return os.RemoveAll(tmpDirName) })
} else {
@ -569,6 +567,17 @@ func extractTimeLinkFiles(ea extractionArgs, filesToLink []string) {
LogFatal("There was an error linking input files into %s because %v.\n", ea.OutputFile, err)
}
LogWarning("Bitcode file extracted to: %s, from files %v \n", ea.OutputFile, tmpFileList)
}
func linkBitcodeFiles(ea extractionArgs, filesToLink []string) {
var linkArgs []string
// Extracting the command line max size from the environment if it is not specified
argMax := fetchArgMax(ea)
if ea.Verbose {
linkArgs = append(linkArgs, "-v")
}
if getsize(filesToLink) > argMax { //command line size too large for the OS (necessitated by chromium)
linkBitcodeFilesIncrementally(ea, filesToLink, argMax, linkArgs)
} else {
linkArgs = append(linkArgs, "-o", ea.OutputFile)
linkArgs = append(linkArgs, filesToLink...)
@ -578,7 +587,6 @@ func extractTimeLinkFiles(ea extractionArgs, filesToLink []string) {
}
LogWarning("Bitcode file extracted to: %s \n", ea.OutputFile)
}
}
func extractSectionDarwin(inputFile string) (contents []string) {

7
shared/logging.go
View File

@ -74,8 +74,7 @@ func init() {
}
}
if LLVMLoggingFile != "" {
//FIXME: is it overboard to defer a close? the OS will close when the process gets cleaned up, do we win
//anything by being OCD?
//the OS will close when the process gets cleaned up, do we don't gain anything by being OCD.
if loggingFP, err := os.OpenFile(LLVMLoggingFile, os.O_CREATE|os.O_APPEND|os.O_WRONLY, 0600); err == nil {
loggingFilePointer = loggingFP
}
@ -89,10 +88,6 @@ func makeLogger(lvl int) func(format string, a ...interface{}) {
if !strings.HasSuffix(msg, "\n") {
msg += "\n"
}
//FIXME: (?) if loggingFilePointer != os.Stderr, we could multiplex here
//and send output to both os.Stderr and loggingFilePointer. We wouldn't
//want the user to miss any excitement. Then the sanity checker would not
//need to futz with it.
prefix := loggingPrefixes[lvl]
if len(prefix) > 0 {
_, err := loggingFilePointer.WriteString(prefix)

3
shared/sanity.go
View File

@ -178,7 +178,7 @@ func checkCompilers() bool {
informUser("The CXX compiler %s is:\n\n\t%s\n\n", cxx, extractLine(cxxVersion, 0))
}
//FIXME: why "or" rather than "and"?
//FIXME: why "or" rather than "and"? BECAUSE: if you only need CC, not having CXX is not an error.
return ccOK || cxxOK
}
@ -199,7 +199,6 @@ func extractLine(version string, n int) string {
}
// FIXME: this and execCmd in utils.go could be one routine, if that seems reasonable, or is it overboard?
// Executes a command then returns true for success, false if there was an error, err is either nil or the error.
func checkExecutable(cmdExecName string, varg string) (success bool, output string, err error) {
cmd := exec.Command(cmdExecName, varg)