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Fix Windows build for compilers other than VC10+
[perl5.git] / ext / POSIX / lib / POSIX.pm
CommitLineData
a0d0e21e 1package POSIX;
e9b37efe
NC
2use strict;
3use warnings;
a0d0e21e 4
122efcc9 5our ($AUTOLOAD, %SIGRT);
73c78b0a 6
b0ba2190 7our $VERSION = '1.35';
d5a0d2f9 8
da4061d3 9require XSLoader;
a0d0e21e 10
33fb14dc
NC
11use Fcntl qw(FD_CLOEXEC F_DUPFD F_GETFD F_GETFL F_GETLK F_RDLCK F_SETFD
12 F_SETFL F_SETLK F_SETLKW F_UNLCK F_WRLCK O_ACCMODE O_APPEND
13 O_CREAT O_EXCL O_NOCTTY O_NONBLOCK O_RDONLY O_RDWR O_TRUNC
a5d75221 14 O_WRONLY SEEK_CUR SEEK_END SEEK_SET
9b68a132 15 S_ISBLK S_ISCHR S_ISDIR S_ISFIFO S_ISREG
a5d75221
NC
16 S_IRGRP S_IROTH S_IRUSR S_IRWXG S_IRWXO S_IRWXU S_ISGID S_ISUID
17 S_IWGRP S_IWOTH S_IWUSR S_IXGRP S_IXOTH S_IXUSR);
33fb14dc 18
66fbe9e2
GS
19my $loaded;
20
a0d0e21e 21sub import {
8fe37eed
AP
22 my $pkg = shift;
23
66fbe9e2 24 load_imports() unless $loaded++;
8fe37eed
AP
25
26 # Grandfather old foo_h form to new :foo_h form
27 s/^(?=\w+_h$)/:/ for my @list = @_;
28
a0d0e21e 29 local $Exporter::ExportLevel = 1;
8fe37eed 30 Exporter::import($pkg,@list);
a0d0e21e
LW
31}
32
66fbe9e2 33sub croak { require Carp; goto &Carp::croak }
122efcc9 34sub usage { croak "Usage: POSIX::$_[0]" }
4633a7c4 35
da4061d3 36XSLoader::load();
4633a7c4 37
8fe37eed
AP
38my %replacement = (
39 atexit => 'END {}',
40 atof => undef,
41 atoi => undef,
42 atol => undef,
43 bsearch => \'not supplied',
44 calloc => undef,
45 clearerr => 'IO::Handle::clearerr',
46 div => '/, % and int',
47 execl => undef,
48 execle => undef,
49 execlp => undef,
50 execv => undef,
51 execve => undef,
52 execvp => undef,
53 fclose => 'IO::Handle::close',
54 fdopen => 'IO::Handle::new_from_fd',
55 feof => 'IO::Handle::eof',
56 ferror => 'IO::Handle::error',
57 fflush => 'IO::Handle::flush',
58 fgetc => 'IO::Handle::getc',
59 fgetpos => 'IO::Seekable::getpos',
60 fgets => 'IO::Handle::gets',
61 fileno => 'IO::Handle::fileno',
62 fopen => 'IO::File::open',
63 fprintf => 'printf',
64 fputc => 'print',
65 fputs => 'print',
66 fread => 'read',
67 free => undef,
68 freopen => 'open',
69 fscanf => '<> and regular expressions',
70 fseek => 'IO::Seekable::seek',
71 fsetpos => 'IO::Seekable::setpos',
72 fsync => 'IO::Handle::sync',
73 ftell => 'IO::Seekable::tell',
74 fwrite => 'print',
75 labs => 'abs',
76 ldiv => '/, % and int',
77 longjmp => 'die',
78 malloc => undef,
79 memchr => 'index()',
80 memcmp => 'eq',
81 memcpy => '=',
82 memmove => '=',
83 memset => 'x',
84 offsetof => undef,
85 putc => 'print',
86 putchar => 'print',
87 puts => 'print',
88 qsort => 'sort',
89 rand => \'non-portable, use Perl\'s rand instead',
90 realloc => undef,
91 scanf => '<> and regular expressions',
92 setbuf => 'IO::Handle::setbuf',
93 setjmp => 'eval {}',
94 setvbuf => 'IO::Handle::setvbuf',
95 siglongjmp => 'die',
96 sigsetjmp => 'eval {}',
96927498 97 srand => \'not supplied; refer to Perl\'s srand documentation',
8fe37eed
AP
98 sscanf => 'regular expressions',
99 strcat => '.=',
100 strchr => 'index()',
101 strcmp => 'eq',
102 strcpy => '=',
103 strcspn => 'regular expressions',
104 strlen => 'length',
105 strncat => '.=',
106 strncmp => 'eq',
107 strncpy => '=',
108 strpbrk => undef,
109 strrchr => 'rindex()',
110 strspn => undef,
111 strtok => undef,
112 tmpfile => 'IO::File::new_tmpfile',
113 ungetc => 'IO::Handle::ungetc',
114 vfprintf => undef,
115 vprintf => undef,
116 vsprintf => undef,
117);
118
122efcc9
AP
119my %reimpl = (
120 assert => 'expr => croak "Assertion failed" if !$_[0]',
121 tolower => 'string => lc($_[0])',
122 toupper => 'string => uc($_[0])',
123 closedir => 'dirhandle => CORE::closedir($_[0])',
124 opendir => 'directory => my $dh; CORE::opendir($dh, $_[0]) ? $dh : undef',
125 readdir => 'dirhandle => CORE::readdir($_[0])',
126 rewinddir => 'dirhandle => CORE::rewinddir($_[0])',
127 errno => '$! + 0',
128 creat => 'filename, mode => &open($_[0], &O_WRONLY | &O_CREAT | &O_TRUNC, $_[1])',
129 fcntl => 'filehandle, cmd, arg => CORE::fcntl($_[0], $_[1], $_[2])',
130 getgrgid => 'gid => CORE::getgrgid($_[0])',
131 getgrnam => 'name => CORE::getgrnam($_[0])',
132 atan2 => 'x, y => CORE::atan2($_[0], $_[1])',
133 cos => 'x => CORE::cos($_[0])',
134 exp => 'x => CORE::exp($_[0])',
135 fabs => 'x => CORE::abs($_[0])',
136 log => 'x => CORE::log($_[0])',
137 pow => 'x, exponent => $_[0] ** $_[1]',
138 sin => 'x => CORE::sin($_[0])',
139 sqrt => 'x => CORE::sqrt($_[0])',
140 getpwnam => 'name => CORE::getpwnam($_[0])',
141 getpwuid => 'uid => CORE::getpwuid($_[0])',
142 kill => 'pid, sig => CORE::kill $_[1], $_[0]',
143 raise => 'sig => CORE::kill $_[0], $$; # Is this good enough',
144 getc => 'handle => CORE::getc($_[0])',
145 getchar => 'CORE::getc(STDIN)',
146 gets => 'scalar <STDIN>',
147 remove => 'filename => (-d $_[0]) ? CORE::rmdir($_[0]) : CORE::unlink($_[0])',
148 rename => 'oldfilename, newfilename => CORE::rename($_[0], $_[1])',
149 rewind => 'filehandle => CORE::seek($_[0],0,0)',
150 abs => 'x => CORE::abs($_[0])',
151 exit => 'status => CORE::exit($_[0])',
152 getenv => 'name => $ENV{$_[0]}',
153 system => 'command => CORE::system($_[0])',
154 strerror => 'errno => local $! = $_[0]; "$!"',
155 strstr => 'big, little => CORE::index($_[0], $_[1])',
156 chmod => 'mode, filename => CORE::chmod($_[0], $_[1])',
157 fstat => 'fd => CORE::open my $dup, "<&", $_[0]; CORE::stat($dup)', # Gross.
158 mkdir => 'directoryname, mode => CORE::mkdir($_[0], $_[1])',
159 stat => 'filename => CORE::stat($_[0])',
160 umask => 'mask => CORE::umask($_[0])',
161 wait => 'CORE::wait()',
162 waitpid => 'pid, options => CORE::waitpid($_[0], $_[1])',
163 gmtime => 'time => CORE::gmtime($_[0])',
164 localtime => 'time => CORE::localtime($_[0])',
165 time => 'CORE::time',
166 alarm => 'seconds => CORE::alarm($_[0])',
167 chdir => 'directory => CORE::chdir($_[0])',
168 chown => 'uid, gid, filename => CORE::chown($_[0], $_[1], $_[2])',
169 fork => 'CORE::fork',
170 getegid => '$) + 0',
171 geteuid => '$> + 0',
172 getgid => '$( + 0',
173 getgroups => 'my %seen; grep !$seen{$_}++, split " ", $)',
174 getlogin => 'CORE::getlogin()',
175 getpgrp => 'CORE::getpgrp',
176 getpid => '$$',
177 getppid => 'CORE::getppid',
178 getuid => '$<',
179 isatty => 'filehandle => -t $_[0]',
180 link => 'oldfilename, newfilename => CORE::link($_[0], $_[1])',
181 rmdir => 'directoryname => CORE::rmdir($_[0])',
122efcc9
AP
182 unlink => 'filename => CORE::unlink($_[0])',
183 utime => 'filename, atime, mtime => CORE::utime($_[1], $_[2], $_[0])',
184);
8fe37eed 185
122efcc9 186eval join ';', map "sub $_", keys %replacement, keys %reimpl;
8fe37eed 187
122efcc9 188sub AUTOLOAD {
8fe37eed
AP
189 my ($func) = ($AUTOLOAD =~ /.*::(.*)/);
190
c448c124
AP
191 die "POSIX.xs has failed to load\n" if $func eq 'constant';
192
8dad66f8 193 if (my $code = $reimpl{$func}) {
122efcc9
AP
194 my ($num, $arg) = (0, '');
195 if ($code =~ s/^(.*?) *=> *//) {
196 $arg = $1;
197 $num = 1 + $arg =~ tr/,//;
198 }
199 # no warnings to be consistent with the old implementation, where each
200 # function was in its own little AutoSplit world:
201 eval qq{ sub $func {
202 no warnings;
203 usage "$func($arg)" if \@_ != $num;
204 $code
205 } };
206 no strict;
207 goto &$AUTOLOAD;
208 }
8fe37eed
AP
209 if (exists $replacement{$func}) {
210 my $how = $replacement{$func};
211 croak "Unimplemented: POSIX::$func() is C-specific, stopped"
212 unless defined $how;
213 croak "Unimplemented: POSIX::$func() is $$how" if ref $how;
11e7c26f 214 croak "Use method $how() instead of POSIX::$func()" if $how =~ /::/;
96927498 215 croak "Unimplemented: POSIX::$func() is C-specific: use $how instead";
8fe37eed
AP
216 }
217
8fe37eed 218 constant($func);
a0d0e21e
LW
219}
220
a0d0e21e
LW
221sub perror {
222 print STDERR "@_: " if @_;
223 print STDERR $!,"\n";
224}
225
226sub printf {
227 usage "printf(pattern, args...)" if @_ < 1;
b56ec344 228 CORE::printf STDOUT @_;
a0d0e21e
LW
229}
230
a0d0e21e 231sub sprintf {
c43a6b96 232 usage "sprintf(pattern, args...)" if @_ == 0;
b56ec344 233 CORE::sprintf(shift,@_);
a0d0e21e
LW
234}
235
66fbe9e2 236sub load_imports {
b0ac411b 237our %EXPORT_TAGS = (
66fbe9e2
GS
238
239 assert_h => [qw(assert NDEBUG)],
240
241 ctype_h => [qw(isalnum isalpha iscntrl isdigit isgraph islower
242 isprint ispunct isspace isupper isxdigit tolower toupper)],
243
d4742b2c 244 dirent_h => [],
66fbe9e2
GS
245
246 errno_h => [qw(E2BIG EACCES EADDRINUSE EADDRNOTAVAIL EAFNOSUPPORT
247 EAGAIN EALREADY EBADF EBUSY ECHILD ECONNABORTED
248 ECONNREFUSED ECONNRESET EDEADLK EDESTADDRREQ EDOM EDQUOT
249 EEXIST EFAULT EFBIG EHOSTDOWN EHOSTUNREACH EINPROGRESS
250 EINTR EINVAL EIO EISCONN EISDIR ELOOP EMFILE EMLINK
251 EMSGSIZE ENAMETOOLONG ENETDOWN ENETRESET ENETUNREACH
252 ENFILE ENOBUFS ENODEV ENOENT ENOEXEC ENOLCK ENOMEM
253 ENOPROTOOPT ENOSPC ENOSYS ENOTBLK ENOTCONN ENOTDIR
254 ENOTEMPTY ENOTSOCK ENOTTY ENXIO EOPNOTSUPP EPERM
255 EPFNOSUPPORT EPIPE EPROCLIM EPROTONOSUPPORT EPROTOTYPE
256 ERANGE EREMOTE ERESTART EROFS ESHUTDOWN ESOCKTNOSUPPORT
257 ESPIPE ESRCH ESTALE ETIMEDOUT ETOOMANYREFS ETXTBSY
258 EUSERS EWOULDBLOCK EXDEV errno)],
259
260 fcntl_h => [qw(FD_CLOEXEC F_DUPFD F_GETFD F_GETFL F_GETLK F_RDLCK
261 F_SETFD F_SETFL F_SETLK F_SETLKW F_UNLCK F_WRLCK
262 O_ACCMODE O_APPEND O_CREAT O_EXCL O_NOCTTY O_NONBLOCK
263 O_RDONLY O_RDWR O_TRUNC O_WRONLY
264 creat
265 SEEK_CUR SEEK_END SEEK_SET
266 S_IRGRP S_IROTH S_IRUSR S_IRWXG S_IRWXO S_IRWXU
267 S_ISBLK S_ISCHR S_ISDIR S_ISFIFO S_ISGID S_ISREG S_ISUID
268 S_IWGRP S_IWOTH S_IWUSR)],
269
270 float_h => [qw(DBL_DIG DBL_EPSILON DBL_MANT_DIG
271 DBL_MAX DBL_MAX_10_EXP DBL_MAX_EXP
272 DBL_MIN DBL_MIN_10_EXP DBL_MIN_EXP
273 FLT_DIG FLT_EPSILON FLT_MANT_DIG
274 FLT_MAX FLT_MAX_10_EXP FLT_MAX_EXP
275 FLT_MIN FLT_MIN_10_EXP FLT_MIN_EXP
276 FLT_RADIX FLT_ROUNDS
277 LDBL_DIG LDBL_EPSILON LDBL_MANT_DIG
278 LDBL_MAX LDBL_MAX_10_EXP LDBL_MAX_EXP
279 LDBL_MIN LDBL_MIN_10_EXP LDBL_MIN_EXP)],
280
d4742b2c 281 grp_h => [],
66fbe9e2
GS
282
283 limits_h => [qw( ARG_MAX CHAR_BIT CHAR_MAX CHAR_MIN CHILD_MAX
284 INT_MAX INT_MIN LINK_MAX LONG_MAX LONG_MIN MAX_CANON
285 MAX_INPUT MB_LEN_MAX NAME_MAX NGROUPS_MAX OPEN_MAX
286 PATH_MAX PIPE_BUF SCHAR_MAX SCHAR_MIN SHRT_MAX SHRT_MIN
287 SSIZE_MAX STREAM_MAX TZNAME_MAX UCHAR_MAX UINT_MAX
288 ULONG_MAX USHRT_MAX _POSIX_ARG_MAX _POSIX_CHILD_MAX
289 _POSIX_LINK_MAX _POSIX_MAX_CANON _POSIX_MAX_INPUT
290 _POSIX_NAME_MAX _POSIX_NGROUPS_MAX _POSIX_OPEN_MAX
291 _POSIX_PATH_MAX _POSIX_PIPE_BUF _POSIX_SSIZE_MAX
292 _POSIX_STREAM_MAX _POSIX_TZNAME_MAX)],
293
83f427f7
JH
294 locale_h => [qw(LC_ALL LC_COLLATE LC_CTYPE LC_MESSAGES
295 LC_MONETARY LC_NUMERIC LC_TIME NULL
296 localeconv setlocale)],
66fbe9e2
GS
297
298 math_h => [qw(HUGE_VAL acos asin atan ceil cosh fabs floor fmod
299 frexp ldexp log10 modf pow sinh tan tanh)],
300
d4742b2c 301 pwd_h => [],
66fbe9e2
GS
302
303 setjmp_h => [qw(longjmp setjmp siglongjmp sigsetjmp)],
304
305 signal_h => [qw(SA_NOCLDSTOP SA_NOCLDWAIT SA_NODEFER SA_ONSTACK
306 SA_RESETHAND SA_RESTART SA_SIGINFO SIGABRT SIGALRM
307 SIGCHLD SIGCONT SIGFPE SIGHUP SIGILL SIGINT SIGKILL
3609ea0d 308 SIGPIPE %SIGRT SIGRTMIN SIGRTMAX SIGQUIT SIGSEGV SIGSTOP
ee25ad77
FR
309 SIGTERM SIGTSTP SIGTTIN SIGTTOU SIGUSR1 SIGUSR2 SIGBUS
310 SIGPOLL SIGPROF SIGSYS SIGTRAP SIGURG SIGVTALRM SIGXCPU SIGXFSZ
3609ea0d
JH
311 SIG_BLOCK SIG_DFL SIG_ERR SIG_IGN SIG_SETMASK SIG_UNBLOCK
312 raise sigaction signal sigpending sigprocmask sigsuspend)],
66fbe9e2 313
d4742b2c 314 stdarg_h => [],
66fbe9e2
GS
315
316 stddef_h => [qw(NULL offsetof)],
317
318 stdio_h => [qw(BUFSIZ EOF FILENAME_MAX L_ctermid L_cuserid
319 L_tmpname NULL SEEK_CUR SEEK_END SEEK_SET
320 STREAM_MAX TMP_MAX stderr stdin stdout
321 clearerr fclose fdopen feof ferror fflush fgetc fgetpos
322 fgets fopen fprintf fputc fputs fread freopen
323 fscanf fseek fsetpos ftell fwrite getchar gets
324 perror putc putchar puts remove rewind
325 scanf setbuf setvbuf sscanf tmpfile tmpnam
326 ungetc vfprintf vprintf vsprintf)],
327
328 stdlib_h => [qw(EXIT_FAILURE EXIT_SUCCESS MB_CUR_MAX NULL RAND_MAX
329 abort atexit atof atoi atol bsearch calloc div
330 free getenv labs ldiv malloc mblen mbstowcs mbtowc
331 qsort realloc strtod strtol strtoul wcstombs wctomb)],
332
333 string_h => [qw(NULL memchr memcmp memcpy memmove memset strcat
334 strchr strcmp strcoll strcpy strcspn strerror strlen
335 strncat strncmp strncpy strpbrk strrchr strspn strstr
336 strtok strxfrm)],
337
338 sys_stat_h => [qw(S_IRGRP S_IROTH S_IRUSR S_IRWXG S_IRWXO S_IRWXU
339 S_ISBLK S_ISCHR S_ISDIR S_ISFIFO S_ISGID S_ISREG
340 S_ISUID S_IWGRP S_IWOTH S_IWUSR S_IXGRP S_IXOTH S_IXUSR
341 fstat mkfifo)],
342
d4742b2c 343 sys_times_h => [],
66fbe9e2 344
d4742b2c 345 sys_types_h => [],
66fbe9e2
GS
346
347 sys_utsname_h => [qw(uname)],
348
349 sys_wait_h => [qw(WEXITSTATUS WIFEXITED WIFSIGNALED WIFSTOPPED
350 WNOHANG WSTOPSIG WTERMSIG WUNTRACED)],
351
352 termios_h => [qw( B0 B110 B1200 B134 B150 B1800 B19200 B200 B2400
353 B300 B38400 B4800 B50 B600 B75 B9600 BRKINT CLOCAL
354 CREAD CS5 CS6 CS7 CS8 CSIZE CSTOPB ECHO ECHOE ECHOK
355 ECHONL HUPCL ICANON ICRNL IEXTEN IGNBRK IGNCR IGNPAR
356 INLCR INPCK ISIG ISTRIP IXOFF IXON NCCS NOFLSH OPOST
357 PARENB PARMRK PARODD TCIFLUSH TCIOFF TCIOFLUSH TCION
358 TCOFLUSH TCOOFF TCOON TCSADRAIN TCSAFLUSH TCSANOW
359 TOSTOP VEOF VEOL VERASE VINTR VKILL VMIN VQUIT VSTART
360 VSTOP VSUSP VTIME
361 cfgetispeed cfgetospeed cfsetispeed cfsetospeed tcdrain
362 tcflow tcflush tcgetattr tcsendbreak tcsetattr )],
363
364 time_h => [qw(CLK_TCK CLOCKS_PER_SEC NULL asctime clock ctime
ce0afe25 365 difftime mktime strftime tzset tzname)],
66fbe9e2
GS
366
367 unistd_h => [qw(F_OK NULL R_OK SEEK_CUR SEEK_END SEEK_SET
b250498f 368 STDERR_FILENO STDIN_FILENO STDOUT_FILENO W_OK X_OK
66fbe9e2
GS
369 _PC_CHOWN_RESTRICTED _PC_LINK_MAX _PC_MAX_CANON
370 _PC_MAX_INPUT _PC_NAME_MAX _PC_NO_TRUNC _PC_PATH_MAX
371 _PC_PIPE_BUF _PC_VDISABLE _POSIX_CHOWN_RESTRICTED
372 _POSIX_JOB_CONTROL _POSIX_NO_TRUNC _POSIX_SAVED_IDS
373 _POSIX_VDISABLE _POSIX_VERSION _SC_ARG_MAX
374 _SC_CHILD_MAX _SC_CLK_TCK _SC_JOB_CONTROL
d61b6859 375 _SC_NGROUPS_MAX _SC_OPEN_MAX _SC_PAGESIZE _SC_SAVED_IDS
66fbe9e2
GS
376 _SC_STREAM_MAX _SC_TZNAME_MAX _SC_VERSION
377 _exit access ctermid cuserid
378 dup2 dup execl execle execlp execv execve execvp
f0709b24 379 fpathconf fsync getcwd getegid geteuid getgid getgroups
66fbe9e2
GS
380 getpid getuid isatty lseek pathconf pause setgid setpgid
381 setsid setuid sysconf tcgetpgrp tcsetpgrp ttyname)],
382
d4742b2c 383 utime_h => [],
66fbe9e2
GS
384);
385
386# Exporter::export_tags();
85a5de57
NC
387{
388 # De-duplicate the export list:
a146a244
NC
389 my %export;
390 @export{map {@$_} values %EXPORT_TAGS} = ();
ce0afe25
AB
391 # Doing the de-dup with a temporary hash has the advantage that the SVs in
392 # @EXPORT are actually shared hash key scalars, which will save some memory.
393 our @EXPORT = keys %export;
66fbe9e2 394
a387c53a 395 our @EXPORT_OK = (qw(close lchown nice open pipe read sleep times write
8dad66f8
NC
396 printf sprintf),
397 grep {!exists $export{$_}} keys %reimpl, keys %replacement);
398}
66fbe9e2
GS
399
400require Exporter;
401}
557c0de7
BD
402
403package POSIX::SigAction;
404
fc8b6fe2 405sub new { bless {HANDLER => $_[1], MASK => $_[2], FLAGS => $_[3] || 0, SAFE => 0}, $_[0] }
557c0de7
BD
406sub handler { $_[0]->{HANDLER} = $_[1] if @_ > 1; $_[0]->{HANDLER} };
407sub mask { $_[0]->{MASK} = $_[1] if @_ > 1; $_[0]->{MASK} };
408sub flags { $_[0]->{FLAGS} = $_[1] if @_ > 1; $_[0]->{FLAGS} };
d36b6582 409sub safe { $_[0]->{SAFE} = $_[1] if @_ > 1; $_[0]->{SAFE} };
3609ea0d 410
0e9a7888
RS
411{
412package POSIX::SigSet;
413# This package is here entirely to make sure that POSIX::SigSet is seen by the
414# PAUSE indexer, so that it will always be clearly indexed in core. This is to
415# prevent the accidental case where a third-party distribution can accidentally
416# claim the POSIX::SigSet package, as occurred in 2011-12. -- rjbs, 2011-12-30
417}
418
983cc415
NC
419package POSIX::SigRt;
420
122efcc9
AP
421require Tie::Hash;
422
423our @ISA = 'Tie::StdHash';
424
425our ($_SIGRTMIN, $_SIGRTMAX, $_sigrtn);
426
427our $SIGACTION_FLAGS = 0;
428
983cc415
NC
429sub _init {
430 $_SIGRTMIN = &POSIX::SIGRTMIN;
431 $_SIGRTMAX = &POSIX::SIGRTMAX;
432 $_sigrtn = $_SIGRTMAX - $_SIGRTMIN;
433}
434
435sub _croak {
436 &_init unless defined $_sigrtn;
437 die "POSIX::SigRt not available" unless defined $_sigrtn && $_sigrtn > 0;
438}
439
440sub _getsig {
441 &_croak;
442 my $rtsig = $_[0];
443 # Allow (SIGRT)?MIN( + n)?, a common idiom when doing these things in C.
444 $rtsig = $_SIGRTMIN + ($1 || 0)
445 if $rtsig =~ /^(?:(?:SIG)?RT)?MIN(\s*\+\s*(\d+))?$/;
446 return $rtsig;
447}
448
449sub _exist {
450 my $rtsig = _getsig($_[1]);
451 my $ok = $rtsig >= $_SIGRTMIN && $rtsig <= $_SIGRTMAX;
452 ($rtsig, $ok);
453}
454
455sub _check {
456 my ($rtsig, $ok) = &_exist;
457 die "No POSIX::SigRt signal $_[1] (valid range SIGRTMIN..SIGRTMAX, or $_SIGRTMIN..$_SIGRTMAX)"
458 unless $ok;
459 return $rtsig;
460}
461
462sub new {
463 my ($rtsig, $handler, $flags) = @_;
464 my $sigset = POSIX::SigSet->new($rtsig);
b0ac411b 465 my $sigact = POSIX::SigAction->new($handler, $sigset, $flags);
983cc415
NC
466 POSIX::sigaction($rtsig, $sigact);
467}
468
469sub EXISTS { &_exist }
470sub FETCH { my $rtsig = &_check;
471 my $oa = POSIX::SigAction->new();
472 POSIX::sigaction($rtsig, undef, $oa);
473 return $oa->{HANDLER} }
474sub STORE { my $rtsig = &_check; new($rtsig, $_[2], $SIGACTION_FLAGS) }
475sub DELETE { delete $SIG{ &_check } }
476sub CLEAR { &_exist; delete @SIG{ &POSIX::SIGRTMIN .. &POSIX::SIGRTMAX } }
477sub SCALAR { &_croak; $_sigrtn + 1 }
122efcc9
AP
478
479tie %POSIX::SIGRT, 'POSIX::SigRt';
480# and the expression on the line above is true, so we return true.