Ejemplo n.º 1
0
// Run function analyses main.main() then all the goroutines collected, and
// finally output the analysis results.
func (extract *CFSMExtract) Run() {
	startTime := time.Now()
	mainPkg := ssabuilder.MainPkg(extract.SSA.Prog)
	if mainPkg == nil {
		fmt.Fprintf(os.Stderr, "Error: 'main' package not found\n")
		os.Exit(1)
	}
	init := mainPkg.Func("init")
	main := mainPkg.Func("main")
	fr := makeToplevelFrame(extract)
	for _, pkg := range extract.SSA.Prog.AllPackages() {
		for _, memb := range pkg.Members {
			switch val := memb.(type) {
			case *ssa.Global:
				switch derefAll(val.Type()).(type) {
				case *types.Array:
					vd := utils.NewDef(val)
					fr.env.globals[val] = vd
					fr.env.arrays[vd] = make(Elems)

				case *types.Struct:
					vd := utils.NewDef(val)
					fr.env.globals[val] = vd
					fr.env.structs[vd] = make(Fields)

				case *types.Chan:
					var c *types.Chan
					vd := utils.NewDef(utils.EmptyValue{T: c})
					fr.env.globals[val] = vd

				default:
					fr.env.globals[val] = utils.NewDef(val)
				}
			}
		}
	}

	fmt.Fprintf(os.Stderr, "++ call.toplevel %s()\n", orange("init"))
	visitFunc(init, fr)
	if main == nil {
		fmt.Fprintf(os.Stderr, "Error: 'main()' function not found in 'main' package\n")
		os.Exit(1)
	}
	fmt.Fprintf(os.Stderr, "++ call.toplevel %s()\n", orange("main"))
	visitFunc(main, fr)

	fr.env.session.Types[fr.gortn.role] = fr.gortn.root

	var goFrm *frame
	for len(extract.goQueue) > 0 {
		goFrm, extract.goQueue = extract.goQueue[0], extract.goQueue[1:]
		fmt.Fprintf(os.Stderr, "\n%s\nLOCATION: %s%s\n", goFrm.fn.Name(), goFrm.gortn.role.Name(), loc(goFrm, goFrm.fn.Pos()))
		visitFunc(goFrm.fn, goFrm)
		goFrm.env.session.Types[goFrm.gortn.role] = goFrm.gortn.root
	}

	extract.Time = time.Since(startTime)
	extract.Done <- struct{}{}
}
Ejemplo n.º 2
0
// Run executes the analysis.
func (infer *TypeInfer) Run() {
	infer.Logger.Println("---- Start Analysis ----")
	// Initialise session.
	infer.Env = NewProgram(infer)
	infer.Env.MigoProg = migo.NewProgram()

	startTime := time.Now()
	mainPkg := ssabuilder.MainPkg(infer.SSA.Prog)
	if mainPkg == nil {
		infer.Error <- ErrNoMainPkg
	}
	defer close(infer.Done)

	initFn := mainPkg.Func("init")
	mainFn := mainPkg.Func("main")

	ctx := NewMainFunction(infer.Env, mainFn)
	// TODO(nickng): inline initialisation of var declarations
	for _, pkg := range infer.SSA.Prog.AllPackages() {
		for _, memb := range pkg.Members {
			switch value := memb.(type) {
			case *ssa.Global:
				ctx.Prog.globals[value] = &Value{Value: value}
				switch t := derefAllType(value.Type()).Underlying().(type) {
				case *types.Array:
					ctx.Prog.arrays[ctx.Prog.globals[value]] = make(Elems, t.Len())
				case *types.Slice:
					ctx.Prog.arrays[ctx.Prog.globals[value]] = make(Elems, 0)
				case *types.Struct:
					ctx.Prog.structs[ctx.Prog.globals[value]] = make(Fields, t.NumFields())
				default:
				}
			}
		}
	}
	visitFunc(initFn, infer, ctx)
	visitFunc(mainFn, infer, ctx)

	infer.RunQueue()
	infer.Time = time.Now().Sub(startTime)
}