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libgomp: Fix default futex vs errno

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* config/linux/futex.h (futex_wait): Get error value from errno.
	(futex_wake): Likewise.

From-SVN: r209035
This commit is contained in:
Richard Henderson 2014-04-02 13:27:29 -07:00 • committed by Richard Henderson
parent a19b0bfd98
commit ab18f2f51c
2 changed files with 9 additions and 4 deletions
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5
libgomp/ChangeLog
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@ -1,3 +1,8 @@
2014-04-02 Richard Henderson <rth@redhat.com>
* config/linux/futex.h (futex_wait): Get error value from errno.
(futex_wake): Likewise.
2014-03-25 Jakub Jelinek <jakub@redhat.com>
PR c++/60331

8
libgomp/config/linux/futex.h
View file

@ -41,8 +41,8 @@
static inline void
futex_wait (int *addr, int val)
{
long err = syscall (SYS_futex, addr, gomp_futex_wait, val, NULL);
if (__builtin_expect (err == -ENOSYS, 0))
int err = syscall (SYS_futex, addr, gomp_futex_wait, val, NULL);
if (__builtin_expect (err < 0 && errno == ENOSYS, 0))
{
gomp_futex_wait &= ~FUTEX_PRIVATE_FLAG;
gomp_futex_wake &= ~FUTEX_PRIVATE_FLAG;
@ -53,8 +53,8 @@ futex_wait (int *addr, int val)
static inline void
futex_wake (int *addr, int count)
{
long err = syscall (SYS_futex, addr, gomp_futex_wake, count);
if (__builtin_expect (err == -ENOSYS, 0))
int err = syscall (SYS_futex, addr, gomp_futex_wake, count);
if (__builtin_expect (err < 0 && errno == ENOSYS, 0))
{
gomp_futex_wait &= ~FUTEX_PRIVATE_FLAG;
gomp_futex_wake &= ~FUTEX_PRIVATE_FLAG;