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 */ | 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 (Arguments::parse_argument). 56 AtParse = 0, 57 // Will be validated by CommandLineFlagConstraintList::check_constraints(AfterErgo). 58 AfterErgo = 1, 59 // Will be validated by CommandLineFlagConstraintList::check_constraints(AfterMemoryInit). 60 AfterMemoryInit = 2 61 }; 62 63 private: 64 const char* _name; 65 ConstraintType _validate_type; 66 67 public: 68 // the "name" argument must be a string literal 69 CommandLineFlagConstraint(const char* name, ConstraintType type) { _name=name; _validate_type=type; }; 70 ~CommandLineFlagConstraint() {}; 71 const char* name() const { return _name; } 72 ConstraintType type() const { return _validate_type; } 73 virtual Flag::Error apply_bool(bool* value, bool verbose = true) { ShouldNotReachHere(); return Flag::ERR_OTHER; }; 74 virtual Flag::Error apply_int(int* value, bool verbose = true) { ShouldNotReachHere(); return Flag::ERR_OTHER; }; 75 virtual Flag::Error apply_intx(intx* value, bool verbose = true) { ShouldNotReachHere(); return Flag::ERR_OTHER; }; 76 virtual Flag::Error apply_uint(uint* value, bool verbose = true) { ShouldNotReachHere(); return Flag::ERR_OTHER; }; 77 virtual Flag::Error apply_uintx(uintx* value, bool verbose = true) { ShouldNotReachHere(); return Flag::ERR_OTHER; }; 78 virtual Flag::Error apply_uint64_t(uint64_t* value, bool verbose = true) { ShouldNotReachHere(); return Flag::ERR_OTHER; }; 79 virtual Flag::Error apply_size_t(size_t* value, bool verbose = true) { ShouldNotReachHere(); return Flag::ERR_OTHER; }; 80 virtual Flag::Error apply_double(double* value, bool verbose = true) { ShouldNotReachHere(); return Flag::ERR_OTHER; }; 81 }; 82 83 class CommandLineFlagConstraintList : public AllStatic { 84 private: 85 static GrowableArray<CommandLineFlagConstraint*>* _constraints; 86 // Latest constraint validation type. 87 static CommandLineFlagConstraint::ConstraintType _validating_type; 88 public: 89 static void init(); 90 static int length() { return (_constraints != NULL) ? _constraints->length() : 0; } 91 static CommandLineFlagConstraint* at(int i) { return (_constraints != NULL) ? _constraints->at(i) : NULL; } 92 static CommandLineFlagConstraint* find_if_needs_check(const char* name); 93 static void add(CommandLineFlagConstraint* constraint) { _constraints->append(constraint); } 94 // True if 'AfterErgo' or later constraint functions are validated. 95 static bool validated_after_ergo() { return _validating_type >= CommandLineFlagConstraint::AfterErgo; }; 96 static bool check_constraints(CommandLineFlagConstraint::ConstraintType type); 97 }; 98 99 #endif /* SHARE_VM_RUNTIME_COMMANDLINEFLAGCONSTRAINTLIST_HPP */ |