[glibc] hurd: Mark various conditions as unlikely

[Samuel Thibault <sthibaul@sourceware.org>]

https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=a9fb57105e9abd7919478226ee802270d1b3b9df

commit a9fb57105e9abd7919478226ee802270d1b3b9df
Author: Sergey Bugaev <bugaevc@gmail.com>
Date:   Sat Apr 29 16:13:50 2023 +0300

    hurd: Mark various conditions as unlikely
    
    Signed-off-by: Sergey Bugaev <bugaevc@gmail.com>
    Message-Id: <20230429131354.2507443-3-bugaevc@gmail.com>

Diff:
---
 hurd/hurd/fd.h     | 10 +++++-----
 hurd/hurd/signal.h |  4 ++--
 2 files changed, 7 insertions(+), 7 deletions(-)

diff --git a/hurd/hurd/fd.h b/hurd/hurd/fd.h
index f6139544c5..4727535137 100644
--- a/hurd/hurd/fd.h
+++ b/hurd/hurd/fd.h
@@ -73,18 +73,18 @@ _hurd_fd_get (int fd)
 
   HURD_CRITICAL_BEGIN;
   __mutex_lock (&_hurd_dtable_lock);
-  if (fd < 0 || fd >= _hurd_dtablesize)
+  if (__glibc_unlikely (fd < 0 || fd >= _hurd_dtablesize))
     descriptor = NULL;
   else
     {
       struct hurd_fd *cell = _hurd_dtable[fd];
-      if (cell == NULL)
+      if (__glibc_unlikely (cell == NULL))
 	/* No descriptor allocated at this index.  */
 	descriptor = NULL;
       else
 	{
 	  __spin_lock (&cell->port.lock);
-	  if (cell->port.port == MACH_PORT_NULL)
+	  if (__glibc_unlikely (cell->port.port == MACH_PORT_NULL))
 	    /* The descriptor at this index has no port in it.
 	       This happens if it existed before but was closed.  */
 	    descriptor = NULL;
@@ -107,7 +107,7 @@ _hurd_fd_get (int fd)
 
 #define	HURD_FD_USE(fd, expr)						      \
   ({ struct hurd_fd *descriptor = _hurd_fd_get (fd);			      \
-     descriptor == NULL ? EBADF : (expr); })
+     __glibc_unlikely (descriptor == NULL) ? EBADF : (expr); })
 
 /* Evaluate EXPR with the variable `port' bound to the port to FD, and
    `ctty' bound to the ctty port.  */
@@ -125,7 +125,7 @@ _hurd_fd_get (int fd)
      io_t port, ctty;							      \
      void *crit = _hurd_critical_section_lock ();			      \
      __spin_lock (&__d->port.lock);					      \
-     if (__d->port.port == MACH_PORT_NULL)				      \
+     if (__glibc_unlikely (__d->port.port == MACH_PORT_NULL))		      \
        {								      \
 	 __spin_unlock (&__d->port.lock);				      \
 	 _hurd_critical_section_unlock (crit);				      \
diff --git a/hurd/hurd/signal.h b/hurd/hurd/signal.h
index b8af6f289a..89cf7ac87c 100644
--- a/hurd/hurd/signal.h
+++ b/hurd/hurd/signal.h
@@ -254,9 +254,9 @@ _hurd_critical_section_unlock (void *our_lock)
       sigset_t pending;
       _hurd_sigstate_lock (ss);
       __spin_unlock (&ss->critical_section_lock);
-      pending = _hurd_sigstate_pending(ss) & ~ss->blocked;
+      pending = _hurd_sigstate_pending (ss) & ~ss->blocked;
       _hurd_sigstate_unlock (ss);
-      if (! __sigisemptyset (&pending))
+      if (__glibc_unlikely (!__sigisemptyset (&pending)))
 	/* There are unblocked signals pending, which weren't
 	   delivered because we were in the critical section.
 	   Tell the signal thread to deliver them now.  */