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note description: "[ Constants used for signal handling. This class may be used as ancestor by classes needing its facilities. ]" library: "Free implementation of ELKS library" status: "See notice at end of class." legal: "See notice at end of class." date: "$Date: 2018-04-28 12:47:11 -0800 (Sat, 28 Apr 2018) $" revision: "$Revision: 101695 $" class interface UNIX_SIGNALS create default_create -- Process instances of classes with no creation clause. -- (Default: do nothing.) -- (from ANY) feature -- Access generating_type: TYPE [detachable UNIX_SIGNALS] -- Type of current object -- (type of which it is a direct instance) -- (from ANY) ensure -- from ANY generating_type_not_void: Result /= Void generator: STRING_8 -- Name of current object's generating class -- (base class of the type of which it is a direct instance) -- (from ANY) ensure -- from ANY generator_not_void: Result /= Void generator_not_empty: not Result.is_empty is_defined (sig: INTEGER_32): BOOLEAN -- Is sig a signal defined for this platform? ensure instance_free: class is_ignored (sig: INTEGER_32): BOOLEAN -- Is sig currently set to be ignored? ensure instance_free: class meaning (sig: INTEGER_32): detachable STRING_8 -- A message in English describing what sig is ensure instance_free: class Sigabrt: INTEGER_32 -- Code for Abort signal ensure instance_free: class Sigalrm: INTEGER_32 -- Code for Alarm clock signal ensure instance_free: class Sigbus: INTEGER_32 -- Code for Bus error signal ensure instance_free: class Sigchld: INTEGER_32 -- Code for Death of a child signal. -- Signal ignored by default ensure instance_free: class Sigcld: INTEGER_32 -- Code for Death of a child signal. -- Signal ignored by default ensure instance_free: class Sigcont: INTEGER_32 -- Code for Continue after stop signal. -- Signal ignored by default ensure instance_free: class Sigemt: INTEGER_32 -- Code for EMT instruction signal ensure instance_free: class Sigfpe: INTEGER_32 -- Code for Floating point exception signal ensure instance_free: class Sighup: INTEGER_32 -- Code for Hangup signal ensure instance_free: class Sigill: INTEGER_32 -- Code for Illegal instruction signal ensure instance_free: class Sigint: INTEGER_32 -- Code for Interrupt signal ensure instance_free: class Sigio: INTEGER_32 -- Code for Pending I/O on a descriptor signal. -- Signal ignored by default ensure instance_free: class Sigiot: INTEGER_32 -- Code for IOT instruction signal ensure instance_free: class Sigkill: INTEGER_32 -- Code for Terminator signal ensure instance_free: class Siglost: INTEGER_32 -- Code for Resource lost signal ensure instance_free: class Sigphone: INTEGER_32 -- Code for Line status change signal ensure instance_free: class Sigpipe: INTEGER_32 -- Code for Broken pipe signal ensure instance_free: class Sigpoll: INTEGER_32 -- Code for Selectable event pending signal ensure instance_free: class Sigprof: INTEGER_32 -- Code for Profiling timer alarm signal ensure instance_free: class Sigpwr: INTEGER_32 -- Code for Power-fail signal ensure instance_free: class Sigquit: INTEGER_32 -- Code for Quit signal ensure instance_free: class Sigsegv: INTEGER_32 -- Code for Segmentation violation signal ensure instance_free: class Sigstop: INTEGER_32 -- Code for Stop signal ensure instance_free: class Sigsys: INTEGER_32 -- Code for Bad argument to system call signal ensure instance_free: class Sigterm: INTEGER_32 -- Code for Software termination signal ensure instance_free: class Sigtrap: INTEGER_32 -- Code for Trace trap signal ensure instance_free: class Sigtstp: INTEGER_32 -- Code for Stop from tty signal ensure instance_free: class Sigttin: INTEGER_32 -- Code for Tty input from background signal. -- Signal ignored by default ensure instance_free: class Sigttou: INTEGER_32 -- Code for Tty output from background signal. -- Signal ignored by default ensure instance_free: class Sigurg: INTEGER_32 -- Code for Urgent condition on socket signal. -- Signal ignored by default ensure instance_free: class Sigusr1: INTEGER_32 -- Code for User-defined signal #1 ensure instance_free: class Sigusr2: INTEGER_32 -- Code for User-defined signal #2 ensure instance_free: class Sigvtalarm: INTEGER_32 -- Code for Virtual time alarm signal ensure instance_free: class Sigwinch: INTEGER_32 -- Code for Window size changed signal. -- Signal ignored by default ensure instance_free: class Sigwind: INTEGER_32 -- Code for Window change signal ensure instance_free: class Sigxcpu: INTEGER_32 -- Code for Cpu time limit exceeded signal ensure instance_free: class Sigxfsz: INTEGER_32 -- Code for File size limit exceeded signal ensure instance_free: class feature -- Comparison frozen deep_equal (a: detachable ANY; b: like arg #1): BOOLEAN -- Are a and b either both void -- or attached to isomorphic object structures? -- (from ANY) ensure -- from ANY instance_free: class shallow_implies_deep: standard_equal (a, b) implies Result both_or_none_void: (a = Void) implies (Result = (b = Void)) same_type: (Result and (a /= Void)) implies (b /= Void and then a.same_type (b)) symmetric: Result implies deep_equal (b, a) frozen equal (a: detachable ANY; b: like arg #1): BOOLEAN -- Are a and b either both void or attached -- to objects considered equal? -- (from ANY) ensure -- from ANY instance_free: class definition: Result = (a = Void and b = Void) or else ((a /= Void and b /= Void) and then a.is_equal (b)) frozen is_deep_equal alias "≡≡≡" (other: UNIX_SIGNALS): BOOLEAN -- Are Current and other attached to isomorphic object structures? -- (from ANY) require -- from ANY other_not_void: other /= Void ensure -- from ANY shallow_implies_deep: standard_is_equal (other) implies Result same_type: Result implies same_type (other) symmetric: Result implies other.is_deep_equal (Current) is_equal (other: UNIX_SIGNALS): BOOLEAN -- Is other attached to an object considered -- equal to current object? -- (from ANY) require -- from ANY other_not_void: other /= Void ensure -- from ANY symmetric: Result implies other ~ Current consistent: standard_is_equal (other) implies Result frozen standard_equal (a: detachable ANY; b: like arg #1): BOOLEAN -- Are a and b either both void or attached to -- field-by-field identical objects of the same type? -- Always uses default object comparison criterion. -- (from ANY) ensure -- from ANY instance_free: class definition: Result = (a = Void and b = Void) or else ((a /= Void and b /= Void) and then a.standard_is_equal (b)) frozen standard_is_equal alias "" (other: UNIX_SIGNALS): BOOLEAN -- Is other attached to an object of the same type -- as current object, and field-by-field identical to it? -- (from ANY) require -- from ANY other_not_void: other /= Void ensure -- from ANY same_type: Result implies same_type (other) symmetric: Result implies other.standard_is_equal (Current) feature -- Status report conforms_to (other: ANY): BOOLEAN -- Does type of current object conform to type -- of other (as per Eiffel: The Language, chapter 13)? -- (from ANY) require -- from ANY other_not_void: other /= Void same_type (other: ANY): BOOLEAN -- Is type of current object identical to type of other? -- (from ANY) require -- from ANY other_not_void: other /= Void ensure -- from ANY definition: Result = (conforms_to (other) and other.conforms_to (Current)) signal: INTEGER_32 -- Code of last signal ensure instance_free: class feature -- Status setting catch (sig: INTEGER_32) -- Make sure that future occurrences of sig -- will be treated as exceptions. -- (This is the default for all signals.) -- No effect if signal not defined. ensure instance_free: class ignore (sig: INTEGER_32) -- Make sure that future occurrences of sig -- will be ignored. (This is not the default.) -- No effect if signal not defined. ensure instance_free: class reset_all_default -- Make sure that all exceptions will lead to their -- default handling. ensure instance_free: class reset_default (sig: INTEGER_32) -- Make sure that exception of code code will lead -- to its default action. require is_defined (sig) ensure instance_free: class feature -- Duplication copy (other: UNIX_SIGNALS) -- Update current object using fields of object attached -- to other, so as to yield equal objects. -- (from ANY) require -- from ANY other_not_void: other /= Void type_identity: same_type (other) ensure -- from ANY is_equal: Current ~ other frozen deep_copy (other: UNIX_SIGNALS) -- Effect equivalent to that of: -- copy (other . deep_twin) -- (from ANY) require -- from ANY other_not_void: other /= Void ensure -- from ANY deep_equal: deep_equal (Current, other) frozen deep_twin: UNIX_SIGNALS -- New object structure recursively duplicated from Current. -- (from ANY) ensure -- from ANY deep_twin_not_void: Result /= Void deep_equal: deep_equal (Current, Result) frozen standard_copy (other: UNIX_SIGNALS) -- Copy every field of other onto corresponding field -- of current object. -- (from ANY) require -- from ANY other_not_void: other /= Void type_identity: same_type (other) ensure -- from ANY is_standard_equal: standard_is_equal (other) frozen standard_twin: UNIX_SIGNALS -- New object field-by-field identical to other. -- Always uses default copying semantics. -- (from ANY) ensure -- from ANY standard_twin_not_void: Result /= Void equal: standard_equal (Result, Current) frozen twin: UNIX_SIGNALS -- New object equal to Current -- twin calls copy; to change copying/twinning semantics, redefine copy. -- (from ANY) ensure -- from ANY twin_not_void: Result /= Void is_equal: Result ~ Current feature -- Basic operations frozen default: detachable UNIX_SIGNALS -- Default value of object's type -- (from ANY) frozen default_pointer: POINTER -- Default value of type POINTER -- (Avoid the need to write p.default for -- some p of type POINTER.) -- (from ANY) ensure -- from ANY instance_free: class default_rescue -- Process exception for routines with no Rescue clause. -- (Default: do nothing.) -- (from ANY) frozen do_nothing -- Execute a null action. -- (from ANY) ensure -- from ANY instance_free: class feature -- Output Io: STD_FILES -- Handle to standard file setup -- (from ANY) ensure -- from ANY instance_free: class io_not_void: Result /= Void out: STRING_8 -- New string containing terse printable representation -- of current object -- (from ANY) ensure -- from ANY out_not_void: Result /= Void print (o: detachable ANY) -- Write terse external representation of o -- on standard output. -- (from ANY) ensure -- from ANY instance_free: class frozen tagged_out: STRING_8 -- New string containing terse printable representation -- of current object -- (from ANY) ensure -- from ANY tagged_out_not_void: Result /= Void feature -- Platform Operating_environment: OPERATING_ENVIRONMENT -- Objects available from the operating system -- (from ANY) ensure -- from ANY instance_free: class operating_environment_not_void: Result /= Void invariant -- from ANY reflexive_equality: standard_is_equal (Current) reflexive_conformance: conforms_to (Current) note copyright: "Copyright (c) 1984-2018, Eiffel Software and others" license: "Eiffel Forum License v2 (see http://www.eiffel.com/licensing/forum.txt)" source: "[ Eiffel Software 5949 Hollister Ave., Goleta, CA 93117 USA Telephone 805-685-1006, Fax 805-685-6869 Website http://www.eiffel.com Customer support http://support.eiffel.com ]" end -- class UNIX_SIGNALS
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