Work on iterators and recycling of biosequences

pkg/obioptions/options.go

@@ -3,18 +3,26 @@ package obioptions
 import (
 	"fmt"
 	"os"
+	"runtime"
 
 	"github.com/DavidGamba/go-getoptions"
 )
 
-var __debug__ = false
+var _Debug = false
+var _ParallelWorkers = runtime.NumCPU() - 1
+var _BufferSize = 1
+var _BatchSize = 5000
 
 type ArgumentParser func([]string) (*getoptions.GetOpt, []string, error)
 
 func GenerateOptionParser(optionset ...func(*getoptions.GetOpt)) ArgumentParser {
 	options := getoptions.New()
 	options.Bool("help", false, options.Alias("h", "?"))
-	options.BoolVar(&__debug__, "debug", false)
+	options.BoolVar(&_Debug, "debug", false)
+
+	options.IntVar(&_ParallelWorkers, "workers", runtime.NumCPU()-1,
+		options.Alias("w"),
+		options.Description("Number of parallele threads computing the result"))
 
 	for _, o := range optionset {
 		o(options)
@@ -32,15 +40,33 @@ func GenerateOptionParser(optionset ...func(*getoptions.GetOpt)) ArgumentParser
 	}
 }
 
-// Predicate indicating if the debug mode is activated
+// Predicate indicating if the debug mode is activated.
 func IsDebugMode() bool {
-	return __debug__
+	return _Debug
 }
 
+// ParallelWorkers returns the number of parallel workers requested by
+// the command line option --workers|-w.
+func ParallelWorkers() int {
+	return _ParallelWorkers
+}
+
+// BufferSize returns the expeted channel buffer size for obitools
+func BufferSize() int {
+	return _BufferSize
+}
+
+// BatchSize returns the expeted size of the sequence batches
+func BatchSize() int {
+	return _BatchSize
+}
+
+// DebugOn sets the debug mode on.
 func DebugOn() {
-	__debug__ = true
+	_Debug = true
 }
 
+// DebugOff sets the debug mode off.
 func DebugOff() {
-	__debug__ = false
+	_Debug = false
 }