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Export XSI sigpause 

There are two common sigpause variants, both of which take an int argument.
If you request _XOPEN_SOURCE or _GNU_SOURCE, you get the System V version,
which removes the given signal from the process's signal mask; otherwise
you get the BSD version, which sets the process's signal mask to the given
value.

Signed-off-by: Yaakov Selkowitz <yselkowi@redhat.com>
This commit is contained in:
Yaakov Selkowitz 2017-06-14 10:20:05 -05:00
parent 40ca6f02ed
commit dde6af6f82
5 changed files with 36 additions and 4 deletions
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14
newlib/libc/include/sys/signal.h
View File

@ -200,7 +200,19 @@ int _EXFUN(sigwait, (const sigset_t *set, int *sig));
#endif /* !__CYGWIN__ && !__rtems__ */
#endif /* __POSIX_VISIBLE */
#if __BSD_VISIBLE
/* There are two common sigpause variants, both of which take an int argument.
If you request _XOPEN_SOURCE or _GNU_SOURCE, you get the System V version,
which removes the given signal from the process's signal mask; otherwise
you get the BSD version, which sets the process's signal mask to the given
value. */
#if __XSI_VISIBLE && !defined(__INSIDE_CYGWIN__)
# ifdef __GNUC__
int _EXFUN(sigpause, (int)) __asm__ (__ASMNAME ("__xpg_sigpause"));
# else
int _EXFUN(__xpg_sigpause, (int));
# define sigpause __xpg_sigpause
# endif
#elif __BSD_VISIBLE
int _EXFUN(sigpause, (int));
#endif

1
winsup/cygwin/common.din
View File

@ -102,6 +102,7 @@ __wrap__ZdlPv NOSIGFE # void operator delete(void *p) throw()
__wrap__ZdlPvRKSt9nothrow_t NOSIGFE # void operator delete(void *p, const std::nothrow_t &nt) throw()
__xdrrec_getrec SIGFE
__xdrrec_setnonblock SIGFE
__xpg_sigpause SIGFE
__xpg_strerror_r SIGFE
_exit SIGFE
_feinitialise NOSIGFE

3
winsup/cygwin/include/cygwin/version.h
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@ -475,12 +475,13 @@ details. */
308: Export dladdr.
309: Export getloadavg.
310: Export reallocarray.
311: Export __xpg_sigpause.
Note that we forgot to bump the api for ualarm, strtoll, strtoull,
sigaltstack, sethostname. */
#define CYGWIN_VERSION_API_MAJOR 0
#define CYGWIN_VERSION_API_MINOR 310
#define CYGWIN_VERSION_API_MINOR 311
/* There is also a compatibity version number associated with the shared memory
regions. It is incremented when incompatible changes are made to the shared

12
winsup/cygwin/signal.cc
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@ -523,6 +523,18 @@ sigpause (int signal_mask)
return res;
}
extern "C" int
__xpg_sigpause (int sig)
{
int res;
sigset_t signal_mask;
sigprocmask (0, NULL, &signal_mask);
sigdelset (&signal_mask, sig);
res = handle_sigsuspend (signal_mask);
syscall_printf ("%R = __xpg_sigpause(%y)", res, sig);
return res;
}
extern "C" int
pause (void)
{

10
winsup/doc/posix.xml
View File

@ -877,7 +877,7 @@ also IEEE Std 1003.1-2008 (POSIX.1-2008).</para>
signal
signbit (see chapter "Implementation Notes")
signgam
sigpause
sigpause (see chapter "Implementation Notes")
sigpending
sigprocmask
sigqueue
@ -925,7 +925,7 @@ also IEEE Std 1003.1-2008 (POSIX.1-2008).</para>
strdup
strerror
strerror_l
strerror_r
strerror_r (see chapter "Implementation Notes")
strfmon
strfmon_l
strftime
@ -1668,6 +1668,12 @@ depending on whether _BSD_SOURCE or _GNU_SOURCE is defined when compiling.</para
<para><function>basename</function> is available in both POSIX and GNU flavors,
depending on whether libgen.h is included or not.</para>
<para><function>sigpause</function> is available in both BSD and SysV/XSI
flavors, depending on whether _XOPEN_SOURCE is defined when compiling.</para>
<para><function>strerror_r</function> is available in both POSIX and GNU
flavors, depending on whether _GNU_SOURCE is defined when compiling.</para>
<para><function>dladdr</function> always sets the Dl_info members dli_sname and
dli_saddr to NULL, indicating no symbol matching addr could be found.</para>