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authorLukasz Majewski <lukma@denx.de>2020-11-23 17:47:20 -0300
committerLukasz Majewski <lukma@denx.de>2020-11-30 14:08:44 +0100
commitcc5d5852c65eddf92368b0845e1374bd443316e7 (patch)
tree5ee539d880f98c0d74e2d6b8fa342aaafe88e758 /include
parentfdb724f9032ff73310be0e51549f494a3eaa7495 (diff)
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y2038: Convert aio_suspend to support 64 bit time
The aio_suspend function has been converted to support 64 bit time.

This change uses (in aio_misc.h):
- __futex_abstimed_wait64 (instead of futex_reltimed_wait)
- __futex_abstimed_wait_cancellable64
	(instead of futex_reltimed_wait_cancellable)
    from ./sysdeps/nptl/futex-helpers.h

The aio_suspend() accepts relative timeout, which then is converted to
absolute one.

The i686-gnu port (HURD) do not define DONT_NEED_AIO_MISC_COND and as it
doesn't (yet) support 64 bit time it uses not converted
pthread_cond_timedwait().

The __aio_suspend() is supposed to be run on ports with __TIMESIZE !=64 and
__WORDSIZE==32. It internally utilizes __aio_suspend_time64() and hence the
conversion from 32 bit struct timespec to 64 bit one is required.

For ports supporting 64 bit time the __aio_suspend_time64() will be used
either via alias (to __aio_suspend when __TIMESIZE==64) or redirection
(when -D_TIME_BITS=64 is passed).

Build tests:
./src/scripts/build-many-glibcs.py glibcs

Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Reviewed-by: Adhemerval Zanella  <adhemerval.zanella@linaro.org>
Diffstat (limited to 'include')
-rw-r--r--include/aio.h8
1 files changed, 8 insertions, 0 deletions
diff --git a/include/aio.h b/include/aio.h
index 90c74f9951..c7f4233310 100644
--- a/include/aio.h
+++ b/include/aio.h
@@ -9,6 +9,14 @@ extern void __aio_init (const struct aioinit *__init);
    lio_listio and we do not issue events for each individual list
    element.  */
 #define LIO_NO_INDIVIDUAL_EVENT	128
+
+# if __TIMESIZE == 64
+#  define __aio_suspend_time64 __aio_suspend
+# else
+extern int __aio_suspend_time64 (const struct aiocb *const list[], int nent,
+                                 const struct __timespec64 *timeout);
+librt_hidden_proto (__aio_suspend_time64)
+# endif
 #endif
 
 #endif