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rktio: fix SIGCHLD signal-handler installation on Solaris

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The switch to rktio swapped the sense of "signal" and "sigset"
incompletely, and "signal" on Solaris is the one that resets
the signal handler to SIG_DFL.
This commit is contained in:
Matthew Flatt 2017-07-21 07:40:35 -06:00
parent 1d74c214a1
commit d818e8d996
1 changed files with 3 additions and 7 deletions
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10
racket/src/rktio/rktio_platform.h
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@ -15,6 +15,7 @@
# define USE_TIMEZONE_AND_ALTZONE_VAR
# define USE_TZNAME_VAR
# define USE_NULL_TO_DISCONNECT_UDP
# define SIGNAL_NEEDS_REINSTALL
# else
/* SunOS4 */
# define USE_TM_GMTOFF_FIELD
@ -46,8 +47,6 @@
# define DIRENT_NO_NAMLEN
# define SIGSET_NEEDS_REINSTALL
# define USE_TIMEZONE_VAR_W_DLS
# define USE_TZNAME_VAR
@ -174,7 +173,6 @@
# define DIRENT_NO_NAMLEN
# define SIGCHILD_DOESNT_INTERRUPT_SELECT
# define SIGSET_NEEDS_REINSTALL
# define CANT_SET_SOCKET_BUFSIZE
# define NO_NEED_FOR_BEGINTHREAD
@ -202,8 +200,6 @@
#if defined(__QNX__)
# define SIGSET_NEEDS_REINSTALL
# define BROKEN_READLINK_NUL_TERMINATOR
#endif
@ -337,8 +333,8 @@
/* Signals */
/***********************/
/* SIGSET_NEEDS_REINSTALL reinstalls a signal handler when it
is called to handle a signal. The expected semantics of sigset()
/* SIGNAL_NEEDS_REINSTALL reinstalls a signal handler when it
is called to handle a signal. The expected semantics of signal()
(when this flags is not defined) is that a signal handler is NOT
reset to SIG_DFL after a handler is called to handle a signal. */