diff options
Diffstat (limited to 'cpukit/libcsupport/src/libio.c')
| -rw-r--r-- | cpukit/libcsupport/src/libio.c | 23 |
1 files changed, 15 insertions, 8 deletions
diff --git a/cpukit/libcsupport/src/libio.c b/cpukit/libcsupport/src/libio.c index 26fa7b2f67..0abb082a66 100644 --- a/cpukit/libcsupport/src/libio.c +++ b/cpukit/libcsupport/src/libio.c @@ -108,14 +108,21 @@ int rtems_libio_to_fcntl_flags( unsigned int flags ) rtems_libio_t *rtems_libio_allocate( void ) { - rtems_libio_t *iop = NULL; + rtems_libio_t *iop; rtems_libio_lock(); - if (rtems_libio_iop_freelist) { - iop = rtems_libio_iop_freelist; - rtems_libio_iop_freelist = iop->data1; - memset( iop, 0, sizeof(*iop) ); + iop = rtems_libio_iop_free_head; + + if ( iop != NULL ) { + void *next; + + next = iop->data1; + rtems_libio_iop_free_head = next; + + if ( next == NULL ) { + rtems_libio_iop_free_tail = &rtems_libio_iop_free_head; + } } rtems_libio_unlock(); @@ -131,9 +138,9 @@ void rtems_libio_free( rtems_libio_lock(); - iop->flags = 0; - iop->data1 = rtems_libio_iop_freelist; - rtems_libio_iop_freelist = iop; + iop = memset( iop, 0, sizeof( *iop ) ); + *rtems_libio_iop_free_tail = iop; + rtems_libio_iop_free_tail = &iop->data1; rtems_libio_unlock(); } |