1.0.22.18: select() and EAGAIN

On at least x86 linux 2.6.26 select() can return EAGAIN under load. I
guess this is what the commit message of 1.0.21.8 refers to as "what
happens in the wild" as EAGAIN is not mentioned in the select man
page.

src/code/serve-event.lisp

@@ -277,11 +277,12 @@ Shared between all threads, unless locally bound. EXPERIMENTAL.")
  (case err
  (#.sb!unix:ebadf
  (handler-descriptors-error))
- (#.sb!unix:eintr
+ ((#.sb!unix:eintr #.sb!unix:eagain)
  t)
  (otherwise
  (with-simple-restart (continue "Ignore failure and continue.")
- (simple-perror "Unix system call select() failed" :errno err))))
+ (simple-perror "Unix system call select() failed"
+ :errno err))))
  #!+win32
  (handler-descriptors-error))
  ((plusp value)

tools-for-build/grovel-headers.c

@@ -209,6 +209,7 @@ main(int argc, char *argv[])
  defconstant("enoent", ENOENT);
  defconstant("eexist", EEXIST);
  defconstant("eintr", EINTR);
+ defconstant("eagain", EAGAIN);
 
  defconstant("s-ifmt", S_IFMT);
  defconstant("s-ifdir", S_IFDIR);
@@ -308,6 +309,7 @@ main(int argc, char *argv[])
  deferrno("ebadf", EBADF);
  deferrno("enoent", ENOENT);
  deferrno("eintr", EINTR);
+ deferrno("eagain", EAGAIN);
  deferrno("eio", EIO);
  deferrno("eexist", EEXIST);
  deferrno("eloop", ELOOP);

version.lisp-expr

@@ -17,4 +17,4 @@
 ;;; checkins which aren't released. (And occasionally for internal
 ;;; versions, especially for internal versions off the main CVS
 ;;; branch, it gets hairier, e.g. "0.pre7.14.flaky4.13".)
-"1.0.22.17"
+"1.0.22.18"