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Use unsigned types for counters in AIO code.

This commit is contained in:
Roland McGrath 2015-06-24 17:43:32 -07:00
parent a7fcc2f8ed
commit 86edd44f04
5 changed files with 23 additions and 12 deletions
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11
ChangeLog
View File

@ -1,3 +1,14 @@
2015-06-24 Roland McGrath <roland@hack.frob.com>
* sysdeps/pthread/aio_misc.h (struct waitlist): Change type of field
counterp to 'volatile unsigned int *'.
* sysdeps/pthread/aio_suspend.c [DONT_NEED_AIO_MISC_COND]
(do_aio_misc_wait): Give argument CNTR type 'unsigned int *'.
(aio_suspend): Give local variable CNTR type 'unsigned int'.
* sysdeps/pthread/lio_listio.c (lio_listio_internal):
Give local variable TOTAL type 'volatile unsigned int'.
(struct async_waitlist): Change type of field counter to 'unsigned int'.
2015-06-24 H.J. Lu <hongjiu.lu@intel.com>
[BZ #18383]

4
sysdeps/nptl/aio_misc.h
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@ -34,8 +34,8 @@
#define AIO_MISC_WAIT(result, futex, timeout, cancel) \
do { \
volatile int *futexaddr = &futex; \
int oldval = futex; \
volatile unsigned int *futexaddr = &futex; \
unsigned int oldval = futex; \
\
if (oldval != 0) \
{ \

2
sysdeps/pthread/aio_misc.h
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@ -51,7 +51,7 @@ struct waitlist
#endif
int *result;
volatile int *counterp;
volatile unsigned int *counterp;
/* The next field is used in asynchronous `lio_listio' operations. */
struct sigevent *sigevp;
#ifdef BROKEN_THREAD_SIGNALS

12
sysdeps/pthread/aio_suspend.c
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@ -94,13 +94,13 @@ cleanup (void *arg)
#ifdef DONT_NEED_AIO_MISC_COND
static int
__attribute__ ((noinline))
do_aio_misc_wait(int *cntr, const struct timespec *timeout)
do_aio_misc_wait (unsigned int *cntr, const struct timespec *timeout)
{
int result = 0;
int result = 0;
AIO_MISC_WAIT(result, *cntr, timeout, 1);
AIO_MISC_WAIT (result, *cntr, timeout, 1);
return result;
return result;
}
#endif
@ -124,7 +124,7 @@ aio_suspend (list, nent, timeout)
int cnt;
bool any = false;
int result = 0;
int cntr = 1;
unsigned int cntr = 1;
/* Request the mutex. */
pthread_mutex_lock (&__aio_requests_mutex);
@ -180,7 +180,7 @@ aio_suspend (list, nent, timeout)
pthread_cleanup_push (cleanup, &clparam);
#ifdef DONT_NEED_AIO_MISC_COND
result = do_aio_misc_wait(&cntr, timeout);
result = do_aio_misc_wait (&cntr, timeout);
#else
if (timeout == NULL)
result = pthread_cond_wait (&cond, &__aio_requests_mutex);

6
sysdeps/pthread/lio_listio.c
View File

@ -35,7 +35,7 @@
/* We need this special structure to handle asynchronous I/O. */
struct async_waitlist
{
int counter;
unsigned int counter;
struct sigevent sigev;
struct waitlist list[0];
};
@ -61,7 +61,7 @@ lio_listio_internal (int mode, struct aiocb *const list[], int nent,
struct sigevent defsigev;
struct requestlist *requests[nent];
int cnt;
volatile int total = 0;
volatile unsigned int total = 0;
int result = 0;
if (sig == NULL)
@ -83,7 +83,7 @@ lio_listio_internal (int mode, struct aiocb *const list[], int nent,
requests[cnt] = __aio_enqueue_request ((aiocb_union *) list[cnt],
(list[cnt]->aio_lio_opcode
| LIO_OPCODE_BASE));
| LIO_OPCODE_BASE));
if (requests[cnt] != NULL)
/* Successfully enqueued. */