30
31 /*
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/flags/jvmFlagConstraintsCompiler.hpp",
38 * "runtime/flags/jvmFlagConstraintsGC.hpp" and
39 * "runtime/flags/jvmFlagConstraintsRuntime.hpp" for the functions themselves.
40 */
41
42 typedef JVMFlag::Error (*JVMFlagConstraintFunc_bool)(bool value, bool verbose);
43 typedef JVMFlag::Error (*JVMFlagConstraintFunc_int)(int value, bool verbose);
44 typedef JVMFlag::Error (*JVMFlagConstraintFunc_intx)(intx value, bool verbose);
45 typedef JVMFlag::Error (*JVMFlagConstraintFunc_uint)(uint value, bool verbose);
46 typedef JVMFlag::Error (*JVMFlagConstraintFunc_uintx)(uintx value, bool verbose);
47 typedef JVMFlag::Error (*JVMFlagConstraintFunc_uint64_t)(uint64_t value, bool verbose);
48 typedef JVMFlag::Error (*JVMFlagConstraintFunc_size_t)(size_t value, bool verbose);
49 typedef JVMFlag::Error (*JVMFlagConstraintFunc_double)(double value, bool verbose);
50
51 class JVMFlagConstraint : public CHeapObj<mtArguments> {
52 public:
53 // During VM initialization, constraint validation will be done order of ConstraintType.
54 enum ConstraintType {
55 // Will be validated during argument processing (Arguments::parse_argument).
56 AtParse = 0,
57 // Will be validated inside Threads::create_vm(), right after Arguments::apply_ergo().
58 AfterErgo = 1,
59 // Will be validated inside universe_init(), right after Metaspace::global_initialize().
60 AfterMemoryInit = 2
61 };
62
63 protected:
64 const JVMFlag* const _flag;
65
66 private:
67 ConstraintType _validate_type;
68
69 public:
70 // the "name" argument must be a string literal
71 JVMFlagConstraint(const JVMFlag* flag, ConstraintType type) : _flag(flag), _validate_type(type) {}
72 ~JVMFlagConstraint() {}
73 const JVMFlag* flag() const { return _flag; }
74 ConstraintType type() const { return _validate_type; }
75 virtual JVMFlag::Error apply(bool verbose = true) { ShouldNotReachHere(); return JVMFlag::ERR_OTHER; };
76 virtual JVMFlag::Error apply_bool(bool value, bool verbose = true) { ShouldNotReachHere(); return JVMFlag::ERR_OTHER; };
77 virtual JVMFlag::Error apply_int(int value, bool verbose = true) { ShouldNotReachHere(); return JVMFlag::ERR_OTHER; };
78 virtual JVMFlag::Error apply_intx(intx value, bool verbose = true) { ShouldNotReachHere(); return JVMFlag::ERR_OTHER; };
79 virtual JVMFlag::Error apply_uint(uint value, bool verbose = true) { ShouldNotReachHere(); return JVMFlag::ERR_OTHER; };
80 virtual JVMFlag::Error apply_uintx(uintx value, bool verbose = true) { ShouldNotReachHere(); return JVMFlag::ERR_OTHER; };
81 virtual JVMFlag::Error apply_uint64_t(uint64_t value, bool verbose = true) { ShouldNotReachHere(); return JVMFlag::ERR_OTHER; };
82 virtual JVMFlag::Error apply_size_t(size_t value, bool verbose = true) { ShouldNotReachHere(); return JVMFlag::ERR_OTHER; };
83 virtual JVMFlag::Error apply_double(double value, bool verbose = true) { ShouldNotReachHere(); return JVMFlag::ERR_OTHER; };
84 };
85
86 class JVMFlagConstraintList : public AllStatic {
87 private:
88 static GrowableArray<JVMFlagConstraint*>* _constraints;
89 // Latest constraint validation type.
90 static JVMFlagConstraint::ConstraintType _validating_type;
91 public:
92 static void init();
93 static int length() { return (_constraints != NULL) ? _constraints->length() : 0; }
94 static JVMFlagConstraint* at(int i) { return (_constraints != NULL) ? _constraints->at(i) : NULL; }
95 static JVMFlagConstraint* find(const JVMFlag* flag);
96 static JVMFlagConstraint* find_if_needs_check(const JVMFlag* flag);
97 static void add(JVMFlagConstraint* constraint) { _constraints->append(constraint); }
98 // True if 'AfterErgo' or later constraint functions are validated.
99 static bool validated_after_ergo() { return _validating_type >= JVMFlagConstraint::AfterErgo; };
100 static bool check_constraints(JVMFlagConstraint::ConstraintType type);
101 };
102
103 #endif // SHARE_RUNTIME_FLAGS_JVMFLAGCONSTRAINTLIST_HPP
|
30
31 /*
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/flags/jvmFlagConstraintsCompiler.hpp",
38 * "runtime/flags/jvmFlagConstraintsGC.hpp" and
39 * "runtime/flags/jvmFlagConstraintsRuntime.hpp" for the functions themselves.
40 */
41
42 typedef JVMFlag::Error (*JVMFlagConstraintFunc_bool)(bool value, bool verbose);
43 typedef JVMFlag::Error (*JVMFlagConstraintFunc_int)(int value, bool verbose);
44 typedef JVMFlag::Error (*JVMFlagConstraintFunc_intx)(intx value, bool verbose);
45 typedef JVMFlag::Error (*JVMFlagConstraintFunc_uint)(uint value, bool verbose);
46 typedef JVMFlag::Error (*JVMFlagConstraintFunc_uintx)(uintx value, bool verbose);
47 typedef JVMFlag::Error (*JVMFlagConstraintFunc_uint64_t)(uint64_t value, bool verbose);
48 typedef JVMFlag::Error (*JVMFlagConstraintFunc_size_t)(size_t value, bool verbose);
49 typedef JVMFlag::Error (*JVMFlagConstraintFunc_double)(double value, bool verbose);
50 typedef JVMFlag::Error (*JVMFlagConstraintFunc_ccstrlist)(ccstrlist value, bool verbose);
51
52 class JVMFlagConstraint : public CHeapObj<mtArguments> {
53 public:
54 // During VM initialization, constraint validation will be done order of ConstraintType.
55 enum ConstraintType {
56 // Will be validated during argument processing (Arguments::parse_argument).
57 AtParse = 0,
58 // Will be validated inside Threads::create_vm(), right after Arguments::apply_ergo().
59 AfterErgo = 1,
60 // Will be validated inside universe_init(), right after Metaspace::global_initialize().
61 AfterMemoryInit = 2
62 };
63
64 protected:
65 const JVMFlag* const _flag;
66
67 private:
68 ConstraintType _validate_type;
69
70 public:
71 // the "name" argument must be a string literal
72 JVMFlagConstraint(const JVMFlag* flag, ConstraintType type) : _flag(flag), _validate_type(type) {}
73 ~JVMFlagConstraint() {}
74 const JVMFlag* flag() const { return _flag; }
75 ConstraintType type() const { return _validate_type; }
76 virtual JVMFlag::Error apply(bool verbose = true) { ShouldNotReachHere(); return JVMFlag::ERR_OTHER; };
77 virtual JVMFlag::Error apply_bool(bool value, bool verbose = true) { ShouldNotReachHere(); return JVMFlag::ERR_OTHER; };
78 virtual JVMFlag::Error apply_int(int value, bool verbose = true) { ShouldNotReachHere(); return JVMFlag::ERR_OTHER; };
79 virtual JVMFlag::Error apply_intx(intx value, bool verbose = true) { ShouldNotReachHere(); return JVMFlag::ERR_OTHER; };
80 virtual JVMFlag::Error apply_uint(uint value, bool verbose = true) { ShouldNotReachHere(); return JVMFlag::ERR_OTHER; };
81 virtual JVMFlag::Error apply_uintx(uintx value, bool verbose = true) { ShouldNotReachHere(); return JVMFlag::ERR_OTHER; };
82 virtual JVMFlag::Error apply_uint64_t(uint64_t value, bool verbose = true) { ShouldNotReachHere(); return JVMFlag::ERR_OTHER; };
83 virtual JVMFlag::Error apply_size_t(size_t value, bool verbose = true) { ShouldNotReachHere(); return JVMFlag::ERR_OTHER; };
84 virtual JVMFlag::Error apply_double(double value, bool verbose = true) { ShouldNotReachHere(); return JVMFlag::ERR_OTHER; };
85 virtual JVMFlag::Error apply_ccstrlist(ccstrlist value, bool verbose = true) { ShouldNotReachHere(); return JVMFlag::ERR_OTHER; };
86 };
87
88 class JVMFlagConstraintList : public AllStatic {
89 private:
90 static GrowableArray<JVMFlagConstraint*>* _constraints;
91 // Latest constraint validation type.
92 static JVMFlagConstraint::ConstraintType _validating_type;
93 public:
94 static void init();
95 static int length() { return (_constraints != NULL) ? _constraints->length() : 0; }
96 static JVMFlagConstraint* at(int i) { return (_constraints != NULL) ? _constraints->at(i) : NULL; }
97 static JVMFlagConstraint* find(const JVMFlag* flag);
98 static JVMFlagConstraint* find_if_needs_check(const JVMFlag* flag);
99 static void add(JVMFlagConstraint* constraint) { _constraints->append(constraint); }
100 // True if 'AfterErgo' or later constraint functions are validated.
101 static bool validated_after_ergo() { return _validating_type >= JVMFlagConstraint::AfterErgo; };
102 static bool check_constraints(JVMFlagConstraint::ConstraintType type);
103 };
104
105 #endif // SHARE_RUNTIME_FLAGS_JVMFLAGCONSTRAINTLIST_HPP
|