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hurd: Mark various conditions as unlikely

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Signed-off-by: Sergey Bugaev <bugaevc@gmail.com>
Message-Id: <20230429131354.2507443-3-bugaevc@gmail.com>
This commit is contained in:
Sergey Bugaev 2023-04-29 16:13:50 +03:00 committed by Samuel Thibault
parent 3fd996d32c
commit a9fb57105e
2 changed files with 7 additions and 7 deletions
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10
hurd/hurd/fd.h
View File

@ -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); \

2
hurd/hurd/signal.h
View File

@ -256,7 +256,7 @@ _hurd_critical_section_unlock (void *our_lock)
__spin_unlock (&ss->critical_section_lock);
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. */