// New returns a new Pigosat instance, ready to have literals added to it. The
// error return value need only be checked if the OutputFile option is non-nil.
func New(options *Options) (*Pigosat, error) {
// PicoSAT * picosat_init (void);
p := C.picosat_init()
if options != nil {
// void picosat_set_propagation_limit (PicoSAT *, unsigned long long limit);
C.picosat_set_propagation_limit(p, C.ulonglong(options.PropagationLimit))
if options.OutputFile != nil {
cfile, err := cfdopen(options.OutputFile, "a")
if err != nil {
C.picosat_reset(p)
return nil, &os.PathError{Op: "fdopen",
Path: options.OutputFile.Name(), Err: err}
}
// void picosat_set_output (PicoSAT *, FILE *);
C.picosat_set_output(p, cfile)
}
// void picosat_set_verbosity (PicoSAT *, int new_verbosity_level);
C.picosat_set_verbosity(p, C.int(options.Verbosity))
if options.Prefix != "" {
// void picosat_set_prefix (PicoSAT *, const char *);
prefix := C.CString(options.Prefix)
defer C.free(unsafe.Pointer(prefix))
C.picosat_set_prefix(p, prefix)
}
if options.MeasureAllCalls {
// void picosat_measure_all_calls (PicoSAT *);
C.picosat_measure_all_calls(p)
}
}
pgo := &Pigosat{p: p, lock: sync.RWMutex{}}
runtime.SetFinalizer(pgo, (*Pigosat).delete)
return pgo, nil
}
// delete frees memory associated with p's PicoSAT object. It only needs to be
// called from the runtime.SetFinalizer set in New.
func (p *Pigosat) delete() {
// For some reason, SetFinalizer needs delete to be idempotent/reentrant.
// That said, since finalizers are only run when there are no more
// references to the object, there doesn't seem to be any point in locking.
if p.p == nil {
return
}
// void picosat_reset (PicoSAT *);
C.picosat_reset(p.p)
p.p = nil
}
// New returns a new Pigosat instance, ready to have literals added to it. The
// error return value need only be checked if the OutputFile option is non-nil.
func New(options *Options) (*Pigosat, error) {
// PicoSAT * picosat_init (void);
p := C.picosat_init()
if options != nil {
// void picosat_set_propagation_limit (PicoSAT *, unsigned long long limit);
prop := options.PropagationLimit
if prop == 0 {
prop = 1000
}
C.picosat_set_propagation_limit(p, C.ulonglong(prop))
if options.OutputFile != nil {
cfile, err := cfdopen(options.OutputFile, "a")
if err != nil {
C.picosat_reset(p)
return nil, &os.PathError{Op: "fdopen",
Path: options.OutputFile.Name(), Err: err}
}
// void picosat_set_output (PicoSAT *, FILE *);
C.picosat_set_output(p, cfile)
}
// void picosat_set_verbosity (PicoSAT *, int new_verbosity_level);
C.picosat_set_verbosity(p, C.int(options.Verbosity))
if options.Prefix != "" {
// void picosat_set_prefix (PicoSAT *, const char *);
prefix := C.CString(options.Prefix)
defer C.free(unsafe.Pointer(prefix))
C.picosat_set_prefix(p, prefix)
}
if options.MeasureAllCalls {
// void picosat_measure_all_calls (PicoSAT *);
C.picosat_measure_all_calls(p)
}
if options.EnableTrace {
if int(C.picosat_enable_trace_generation(p)) == 0 {
// The cgo CFLAGS guarantee trace generation using -DTRACE.
panic("trace generation was not enabled in build")
}
}
}
pgo := &Pigosat{p: p, lock: sync.RWMutex{}}
runtime.SetFinalizer(pgo, (*Pigosat).delete)
return pgo, nil
}