32 * Here we have a mechanism for extracting constraints (as custom functions) for flags,
33 * which otherwise can not be expressed via simple range check, specified in flag macro tables.
34 *
35 * An example of a constraint is "flag1 < flag2" where both flag1 and flag2 can change.
36 *
37 * See runtime "runtime/commandLineFlagConstraintsCompiler.hpp",
38 * "runtime/commandLineFlagConstraintsGC.hpp" and
39 * "runtime/commandLineFlagConstraintsRuntime.hpp" for the functions themselves.
40 */
41
42 typedef Flag::Error (*CommandLineFlagConstraintFunc_bool)(bool verbose, bool* value);
43 typedef Flag::Error (*CommandLineFlagConstraintFunc_int)(bool verbose, int* value);
44 typedef Flag::Error (*CommandLineFlagConstraintFunc_intx)(bool verbose, intx* value);
45 typedef Flag::Error (*CommandLineFlagConstraintFunc_uint)(bool verbose, uint* value);
46 typedef Flag::Error (*CommandLineFlagConstraintFunc_uintx)(bool verbose, uintx* value);
47 typedef Flag::Error (*CommandLineFlagConstraintFunc_uint64_t)(bool verbose, uint64_t* value);
48 typedef Flag::Error (*CommandLineFlagConstraintFunc_size_t)(bool verbose, size_t* value);
49 typedef Flag::Error (*CommandLineFlagConstraintFunc_double)(bool verbose, double* value);
50
51 class CommandLineFlagConstraint : public CHeapObj<mtInternal> {
52 private:
53 const char* _name;
54 public:
55 // the "name" argument must be a string literal
56 CommandLineFlagConstraint(const char* name) { _name=name; };
57 ~CommandLineFlagConstraint() {};
58 const char* name() { return _name; }
59 virtual Flag::Error apply_bool(bool* value, bool verbose = true) { ShouldNotReachHere(); return Flag::ERR_OTHER; };
60 virtual Flag::Error apply_int(int* value, bool verbose = true) { ShouldNotReachHere(); return Flag::ERR_OTHER; };
61 virtual Flag::Error apply_intx(intx* value, bool verbose = true) { ShouldNotReachHere(); return Flag::ERR_OTHER; };
62 virtual Flag::Error apply_uint(uint* value, bool verbose = true) { ShouldNotReachHere(); return Flag::ERR_OTHER; };
63 virtual Flag::Error apply_uintx(uintx* value, bool verbose = true) { ShouldNotReachHere(); return Flag::ERR_OTHER; };
64 virtual Flag::Error apply_uint64_t(uint64_t* value, bool verbose = true) { ShouldNotReachHere(); return Flag::ERR_OTHER; };
65 virtual Flag::Error apply_size_t(size_t* value, bool verbose = true) { ShouldNotReachHere(); return Flag::ERR_OTHER; };
66 virtual Flag::Error apply_double(double* value, bool verbose = true) { ShouldNotReachHere(); return Flag::ERR_OTHER; };
67 };
68
69 class CommandLineFlagConstraintList : public AllStatic {
70 private:
71 static GrowableArray<CommandLineFlagConstraint*>* _constraints;
72 public:
73 static void init();
74 static int length() { return (_constraints != NULL) ? _constraints->length() : 0; }
75 static CommandLineFlagConstraint* at(int i) { return (_constraints != NULL) ? _constraints->at(i) : NULL; }
76 static CommandLineFlagConstraint* find(const char* name);
77 static void add(CommandLineFlagConstraint* constraint) { _constraints->append(constraint); }
78 };
79
80 #endif /* SHARE_VM_RUNTIME_COMMANDLINEFLAGCONSTRAINTLIST_HPP */
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32 * Here we have a mechanism for extracting constraints (as custom functions) for flags,
33 * which otherwise can not be expressed via simple range check, specified in flag macro tables.
34 *
35 * An example of a constraint is "flag1 < flag2" where both flag1 and flag2 can change.
36 *
37 * See runtime "runtime/commandLineFlagConstraintsCompiler.hpp",
38 * "runtime/commandLineFlagConstraintsGC.hpp" and
39 * "runtime/commandLineFlagConstraintsRuntime.hpp" for the functions themselves.
40 */
41
42 typedef Flag::Error (*CommandLineFlagConstraintFunc_bool)(bool verbose, bool* value);
43 typedef Flag::Error (*CommandLineFlagConstraintFunc_int)(bool verbose, int* value);
44 typedef Flag::Error (*CommandLineFlagConstraintFunc_intx)(bool verbose, intx* value);
45 typedef Flag::Error (*CommandLineFlagConstraintFunc_uint)(bool verbose, uint* value);
46 typedef Flag::Error (*CommandLineFlagConstraintFunc_uintx)(bool verbose, uintx* value);
47 typedef Flag::Error (*CommandLineFlagConstraintFunc_uint64_t)(bool verbose, uint64_t* value);
48 typedef Flag::Error (*CommandLineFlagConstraintFunc_size_t)(bool verbose, size_t* value);
49 typedef Flag::Error (*CommandLineFlagConstraintFunc_double)(bool verbose, double* value);
50
51 class CommandLineFlagConstraint : public CHeapObj<mtInternal> {
52 public:
53 // During VM initialization, constraint validation will be done order of ConstraintType.
54 enum ConstraintType {
55 // Will be validated during argument processing.
56 Anytime = 0,
57 // Will be validated by CommandLineFlags::check_ranges_and_constraints_of_after_parse().
58 AfterParse = 1,
59 // Will be validated by CommandLineFlags::check_constraints_of_after_memory_init().
60 AfterMemoryInit = 2
61 };
62 // the "name" argument must be a string literal
63 CommandLineFlagConstraint(const char* name, ConstraintType type) { _name=name; _validate_type=type; };
64 ~CommandLineFlagConstraint() {};
65 const char* name() { return _name; }
66 ConstraintType type() { return _validate_type; }
67 virtual Flag::Error apply_bool(bool* value, bool verbose = true) { ShouldNotReachHere(); return Flag::ERR_OTHER; };
68 virtual Flag::Error apply_int(int* value, bool verbose = true) { ShouldNotReachHere(); return Flag::ERR_OTHER; };
69 virtual Flag::Error apply_intx(intx* value, bool verbose = true) { ShouldNotReachHere(); return Flag::ERR_OTHER; };
70 virtual Flag::Error apply_uint(uint* value, bool verbose = true) { ShouldNotReachHere(); return Flag::ERR_OTHER; };
71 virtual Flag::Error apply_uintx(uintx* value, bool verbose = true) { ShouldNotReachHere(); return Flag::ERR_OTHER; };
72 virtual Flag::Error apply_uint64_t(uint64_t* value, bool verbose = true) { ShouldNotReachHere(); return Flag::ERR_OTHER; };
73 virtual Flag::Error apply_size_t(size_t* value, bool verbose = true) { ShouldNotReachHere(); return Flag::ERR_OTHER; };
74 virtual Flag::Error apply_double(double* value, bool verbose = true) { ShouldNotReachHere(); return Flag::ERR_OTHER; };
75
76 // Change a string literal to ConstraintType
77 static ConstraintType change_to_enum(const char* type);
78
79 private:
80 const char* _name;
81 ConstraintType _validate_type;
82 };
83
84 class CommandLineFlagConstraintList : public AllStatic {
85 private:
86 static GrowableArray<CommandLineFlagConstraint*>* _constraints;
87 // Latest constraint validation type.
88 static CommandLineFlagConstraint::ConstraintType _validationType;
89 public:
90 static void init();
91 static int length() { return (_constraints != NULL) ? _constraints->length() : 0; }
92 static CommandLineFlagConstraint* at(int i) { return (_constraints != NULL) ? _constraints->at(i) : NULL; }
93 static CommandLineFlagConstraint* find_if_validated(const char* name);
94 static void add(CommandLineFlagConstraint* constraint) { _constraints->append(constraint); }
95 // True if 'AfterParse' or later constraint functions are validated.
96 static bool validatedAfterParse() { return _validationType >= CommandLineFlagConstraint::AfterParse; };
97 // Set current validation type
98 static void setValidatingType(CommandLineFlagConstraint::ConstraintType type) { _validationType = type; };
99 };
100
101 #endif /* SHARE_VM_RUNTIME_COMMANDLINEFLAGCONSTRAINTLIST_HPP */
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