Gecko [ beriskala.com ]

Name	Size	Permission	Date
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OpenURI	[ DIR ]	drwxr-xr-x	2026-05-05 23:08
OptionParser	[ DIR ]	drwxr-xr-x	2026-05-05 23:08
PP	[ DIR ]	drwxr-xr-x	2026-05-05 23:08
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Psych	[ DIR ]	drwxr-xr-x	2026-05-05 23:08
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Rake	[ DIR ]	drwxr-xr-x	2026-05-05 23:08
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Range	[ DIR ]	drwxr-xr-x	2026-05-05 23:08
RangeError	[ DIR ]	drwxr-xr-x	2026-05-05 23:08
Rational	[ DIR ]	drwxr-xr-x	2026-05-05 23:08
RbConfig	[ DIR ]	drwxr-xr-x	2026-05-05 23:08
Readline	[ DIR ]	drwxr-xr-x	2026-05-05 23:08
Refinement	[ DIR ]	drwxr-xr-x	2026-05-05 23:08
Regexp	[ DIR ]	drwxr-xr-x	2026-05-05 23:08
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SOCKSSocket	[ DIR ]	drwxr-xr-x	2026-05-05 23:08
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SecureRandom	[ DIR ]	drwxr-xr-x	2026-05-05 23:08
SecurityError	[ DIR ]	drwxr-xr-x	2026-05-05 23:08
Set	[ DIR ]	drwxr-xr-x	2026-05-05 23:08
Shellwords	[ DIR ]	drwxr-xr-x	2026-05-05 23:08
Signal	[ DIR ]	drwxr-xr-x	2026-05-05 23:08
SignalException	[ DIR ]	drwxr-xr-x	2026-05-05 23:08
SimpleDelegator	[ DIR ]	drwxr-xr-x	2026-05-05 23:08
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Socket	[ DIR ]	drwxr-xr-x	2026-05-05 23:08
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StopIteration	[ DIR ]	drwxr-xr-x	2026-05-05 23:08
String	[ DIR ]	drwxr-xr-x	2026-05-05 23:08
StringIO	[ DIR ]	drwxr-xr-x	2026-05-05 23:08
StringScanner	[ DIR ]	drwxr-xr-x	2026-05-05 23:08
Struct	[ DIR ]	drwxr-xr-x	2026-05-05 23:08
Symbol	[ DIR ]	drwxr-xr-x	2026-05-05 23:08
SyntaxError	[ DIR ]	drwxr-xr-x	2026-05-05 23:08
SyntaxSuggest	[ DIR ]	drwxr-xr-x	2026-05-05 23:08
SystemCallError	[ DIR ]	drwxr-xr-x	2026-05-05 23:08
SystemExit	[ DIR ]	drwxr-xr-x	2026-05-05 23:08
SystemStackError	[ DIR ]	drwxr-xr-x	2026-05-05 23:08
TCPServer	[ DIR ]	drwxr-xr-x	2026-05-05 23:08
TCPSocket	[ DIR ]	drwxr-xr-x	2026-05-05 23:08
TSort	[ DIR ]	drwxr-xr-x	2026-05-05 23:08
Tempfile	[ DIR ]	drwxr-xr-x	2026-05-05 23:08
Thread	[ DIR ]	drwxr-xr-x	2026-05-05 23:08
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Time	[ DIR ]	drwxr-xr-x	2026-05-05 23:08
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UnboundMethod	[ DIR ]	drwxr-xr-x	2026-05-05 23:08
UncaughtThrowError	[ DIR ]	drwxr-xr-x	2026-05-05 23:08
UnicodeNormalize	[ DIR ]	drwxr-xr-x	2026-05-05 23:08
WIN32OLE	[ DIR ]	drwxr-xr-x	2026-05-05 23:08
Warning	[ DIR ]	drwxr-xr-x	2026-05-05 23:08
WeakRef	[ DIR ]	drwxr-xr-x	2026-05-05 23:08
Win32	[ DIR ]	drwxr-xr-x	2026-05-05 23:08
YAML	[ DIR ]	drwxr-xr-x	2026-05-05 23:08
ZeroDivisionError	[ DIR ]	drwxr-xr-x	2026-05-05 23:08
Zlib	[ DIR ]	drwxr-xr-x	2026-05-05 23:08
contributing	[ DIR ]	drwxr-xr-x	2026-05-05 23:08
date	[ DIR ]	drwxr-xr-x	2026-05-05 23:08
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optparse	[ DIR ]	drwxr-xr-x	2026-05-05 23:08
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syntax	[ DIR ]	drwxr-xr-x	2026-05-05 23:08
yjit	[ DIR ]	drwxr-xr-x	2026-05-05 23:08
cache.ri	384.64 KB	-rw-r--r--	2026-04-07 16:51
page-COPYING.ri	3.06 KB	-rw-r--r--	2026-04-07 16:51
page-COPYING_ja.ri	3.14 KB	-rw-r--r--	2026-04-07 16:51
page-LEGAL.ri	48.67 KB	-rw-r--r--	2026-04-07 16:51
page-NEWS_md.ri	46.58 KB	-rw-r--r--	2026-04-07 16:51
page-README_ja_md.ri	10.59 KB	-rw-r--r--	2026-04-07 16:51
page-README_md.ri	4.45 KB	-rw-r--r--	2026-04-07 16:51
page-bsearch_rdoc.ri	5.51 KB	-rw-r--r--	2026-04-07 16:51
page-bug_triaging_rdoc.ri	4.83 KB	-rw-r--r--	2026-04-07 16:51
page-case_mapping_rdoc.ri	4.56 KB	-rw-r--r--	2026-04-07 16:51
page-character_selectors_rdoc.ri	4.59 KB	-rw-r--r--	2026-04-07 16:51
page-command_injection_rdoc.ri	1.77 KB	-rw-r--r--	2026-04-07 16:51
page-contributing_md.ri	1.43 KB	-rw-r--r--	2026-04-07 16:51
page-dig_methods_rdoc.ri	3.66 KB	-rw-r--r--	2026-04-07 16:51
page-distribution_md.ri	2.57 KB	-rw-r--r--	2026-04-07 16:51
page-dtrace_probes_rdoc.ri	9.92 KB	-rw-r--r--	2026-04-07 16:51
page-encodings_rdoc.ri	20.76 KB	-rw-r--r--	2026-04-07 16:51
page-exceptions_md.ri	14.96 KB	-rw-r--r--	2026-04-07 16:51
page-extension_ja_rdoc.ri	86.85 KB	-rw-r--r--	2026-04-07 16:51
page-extension_rdoc.ri	92.22 KB	-rw-r--r--	2026-04-07 16:51
page-fiber_md.ri	7.55 KB	-rw-r--r--	2026-04-07 16:51
page-format_specifications_rdoc.ri	12.97 KB	-rw-r--r--	2026-04-07 16:51
page-globals_rdoc.ri	11.52 KB	-rw-r--r--	2026-04-07 16:51
page-implicit_conversion_rdoc.ri	7.79 KB	-rw-r--r--	2026-04-07 16:51
page-index_md.ri	3.59 KB	-rw-r--r--	2026-04-07 16:51
page-maintainers_md.ri	21.69 KB	-rw-r--r--	2026-04-07 16:51
page-marshal_rdoc.ri	14.17 KB	-rw-r--r--	2026-04-07 16:51
page-memory_view_md.ri	8.85 KB	-rw-r--r--	2026-04-07 16:51
page-packed_data_rdoc.ri	27.94 KB	-rw-r--r--	2026-04-07 16:51
page-ractor_md.ri	31.78 KB	-rw-r--r--	2026-04-07 16:51
page-security_rdoc.ri	7.12 KB	-rw-r--r--	2026-04-07 16:51
page-signals_rdoc.ri	4.96 KB	-rw-r--r--	2026-04-07 16:51
page-standard_library_md.ri	12.84 KB	-rw-r--r--	2026-04-07 16:51
page-strftime_formatting_rdoc.ri	20.9 KB	-rw-r--r--	2026-04-07 16:51
page-syntax_rdoc.ri	1.97 KB	-rw-r--r--	2026-04-07 16:51
page-windows_md.ri	8.11 KB	-rw-r--r--	2026-04-07 16:51

Rename

U:RDoc::TopLevel[	i�I"signals.rdoc:ETcRDoc::Parser::Simpleo:RDoc::Markup::Document:@parts[S:RDoc::Markup::Heading:
leveli:	textI"3Caveats for implementing Signal.trap callbacks;To:RDoc::Markup::BlankLine�o:RDoc::Markup::Paragraph;[
I"HAs with implementing signal handlers in C or most other languages, ;TI"Gall code passed to Signal.trap must be reentrant.  If you are not ;TI"<familiar with reentrancy, you need to read up on it at ;TI"J{Wikipedia}[https://en.wikipedia.org/wiki/Reentrancy_(computing)] or ;TI"8elsewhere before reading the rest of this document.;T@
o;
;[I"FMost importantly, "thread-safety" does not guarantee reentrancy; ;TI"Dand methods such as Mutex#lock and Mutex#synchronize which are ;TI"=commonly used for thread-safety even prevent reentrancy.;T@
S;	;
i;I",An implementation detail of the Ruby VM;T@
o;
;[I"LThe Ruby VM defers Signal.trap callbacks from running until it is safe ;TI"Lfor its internal data structures, but it does not know when it is safe ;TI"Hfor data structures in YOUR code.  Ruby implements deferred signal ;TI"9handling by registering short C functions with only ;TI"a{async-signal-safe functions}[http://man7.org/linux/man-pages/man7/signal-safety.7.html] as ;TI"Msignal handlers.  These short C functions only do enough tell the VM to ;TI"Lrun callbacks registered via Signal.trap later in the main Ruby Thread.;T@
S;	;
i;I"1Unsafe methods to call in Signal.trap blocks;T@
o;
;[I"HWhen in doubt, consider anything not listed as safe below as being ;TI"unsafe.;T@
o:RDoc::Markup::List:
@type:BULLET:@items[	o:RDoc::Markup::ListItem:@label0;[o;
;[I"JMutex#lock, Mutex#synchronize and any code using them are explicitly ;TI"Gunsafe.  This includes Monitor in the standard library which uses ;TI"!Mutex to provide reentrancy.;T@
o;;0;[o;
;[I"Dir.chdir with block;T@
o;;0;[o;
;[	I"4any IO write operations when IO#sync is false; ;TI"5including IO#write, IO#write_nonblock, IO#puts. ;TI"EPipes and sockets default to `IO#sync = true', so it is safe to ;TI"/write to them unless IO#sync was disabled.;T@
o;;0;[o;
;[I"JFile#flock, as the underlying flock(2) call is not specified by POSIX;T@
S;	;
i;I"7Commonly safe operations inside Signal.trap blocks;T@
o;;;;[
o;;0;[o;
;[I"EAssignment and retrieval of local, instance, and class variables;T@
o;;0;[o;
;[I"AMost object allocations and initializations of common types ;TI"1including Array, Hash, String, Struct, Time.;T@
o;;0;[o;
;[I"PCommon Array, Hash, String, Struct operations which do not execute a block ;TI"Hare generally safe; but beware if iteration is occurring elsewhere.;T@
o;;0;[o;
;[I"BHash#[], Hash#[]= (unless Hash.new was given an unsafe block);T@
o;;0;[o;
;[I"DThread::Queue#push and Thread::SizedQueue#push (since Ruby 2.1);T@
o;;0;[o;
;[I"GCreating a new Thread via Thread.new/Thread.start can used to get ;TI">around the unusability of Mutexes inside a signal handler;T@
o;;0;[o;
;[I"CSignal.trap is safe to use inside blocks passed to Signal.trap;T@
o;;0;[	o;
;[I">arithmetic on Integer and Float (`+', `-', '%', '*', '/');T@
o;
;[	I"EAdditionally, signal handlers do not run between two successive ;TI"Flocal variable accesses, so shortcuts such as `+=' and `-=' will ;TI"Gnot trigger a data race when used on Integer and Float classes in ;TI"signal handlers.;T@
S;	;
i;I"BSystem call wrapper methods which are safe inside Signal.trap;T@
o;
;[	I")Since Ruby has wrappers around many ;TI"`{async-signal-safe C functions}[http://man7.org/linux/man-pages/man7/signal-safety.7.html] ;TI"Kthe corresponding wrappers for many IO, File, Dir, and Socket methods ;TI"are safe.;T@
o;
;[I"(Incomplete list);T@
o;;;;[#o;;0;[o;
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Dir.open;To;;0;[o;
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IO#close;To;;0;[o;
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;[I"
IO#fsync;To;;0;[o;
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;[I"Process.kill;To;;0;[o;
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;[I"Process.ppid;To;;0;[o;
;[I"Process.waitpid;To;
;[I"...;T:
@file@:0@omit_headings_from_table_of_contents_below0