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genbindings/main: refactor extract generateClangCaches()

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This commit is contained in:
mappu 2024-10-14 18:55:59 +13:00
parent 3382806f62
commit b6aa72f62f
1 changed files with 63 additions and 59 deletions
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122
cmd/genbindings/main.go
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@ -76,8 +76,6 @@ func cleanGeneratedFilesInDir(dirpath string) {
}
func main() {
ctx := context.Background()
clang := flag.String("clang", "clang", "Custom path to clang")
cflags := flag.String("cflags", `-DQT_WIDGETS_LIB -I/usr/include/x86_64-linux-gnu/qt5/QtWidgets -I/usr/include/x86_64-linux-gnu/qt5 -I/usr/include/x86_64-linux-gnu/qt5/QtCore -DQT_GUI_LIB -I/usr/include/x86_64-linux-gnu/qt5/QtGui -DQT_CORE_LIB`, "Cflags to pass to clang (e.g. `pkg-config --cflags Qt5Widgets`)")
outDir := flag.String("outdir", "../../qt", "Output directory for generated gen_** files")
@ -109,63 +107,7 @@ func main() {
// PASS 0 (Fill clang cache)
//
var clangChan = make(chan string, 0)
var clangWg sync.WaitGroup
for i := 0; i < ClangSubprocessCount; i++ {
clangWg.Add(1)
go func() {
defer clangWg.Done()
log.Printf("Clang worker: starting")
for {
inputHeader, ok := <-clangChan
if !ok {
return // Done
}
log.Printf("Clang worker got message for file %q", inputHeader)
// Parse the file
// This seems to intermittently fail, so allow retrying
astInner := mustClangExec(ctx, *clang, inputHeader, strings.Fields(*cflags))
// Write to cache
jb, err := json.MarshalIndent(astInner, "", "\t")
if err != nil {
panic(err)
}
err = ioutil.WriteFile(cacheFilePath(inputHeader), jb, 0644)
if err != nil {
panic(err)
}
astInner = nil
jb = nil
runtime.GC()
}
log.Printf("Clang worker: exiting")
}()
}
for _, inputHeader := range includeFiles {
// Check if there is a matching cache hit
cacheFile := cacheFilePath(inputHeader)
if _, err := os.Stat(cacheFile); err != nil && os.IsNotExist(err) {
// Nonexistent cache file, regenerate from clang
log.Printf("No AST cache for file %q, running clang...", filepath.Base(inputHeader))
clangChan <- inputHeader
}
}
// Done with all clang workers
close(clangChan)
clangWg.Wait()
generateClangCaches(includeFiles, *clang, strings.Fields(*cflags))
// The cache should now be fully populated.
@ -288,3 +230,65 @@ func main() {
log.Printf("Processing %d file(s) completed", len(includeFiles))
}
func generateClangCaches(includeFiles []string, clangBin string, cflags []string) {
var clangChan = make(chan string, 0)
var clangWg sync.WaitGroup
ctx := context.Background()
for i := 0; i < ClangSubprocessCount; i++ {
clangWg.Add(1)
go func() {
defer clangWg.Done()
log.Printf("Clang worker: starting")
for {
inputHeader, ok := <-clangChan
if !ok {
return // Done
}
log.Printf("Clang worker got message for file %q", inputHeader)
// Parse the file
// This seems to intermittently fail, so allow retrying
astInner := mustClangExec(ctx, clangBin, inputHeader, cflags)
// Write to cache
jb, err := json.MarshalIndent(astInner, "", "\t")
if err != nil {
panic(err)
}
err = ioutil.WriteFile(cacheFilePath(inputHeader), jb, 0644)
if err != nil {
panic(err)
}
astInner = nil
jb = nil
runtime.GC()
}
log.Printf("Clang worker: exiting")
}()
}
for _, inputHeader := range includeFiles {
// Check if there is a matching cache hit
cacheFile := cacheFilePath(inputHeader)
if _, err := os.Stat(cacheFile); err != nil && os.IsNotExist(err) {
// Nonexistent cache file, regenerate from clang
log.Printf("No AST cache for file %q, running clang...", filepath.Base(inputHeader))
clangChan <- inputHeader
}
}
// Done with all clang workers
close(clangChan)
clangWg.Wait()
}