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authorAdhemerval Zanella <adhemerval.zanella@linaro.org>2020-11-25 17:15:51 -0300
committerAdhemerval Zanella <adhemerval.zanella@linaro.org>2020-11-27 09:59:13 -0300
commit71eeae0325a95f5e5d7ec4a27a6a6c357e0c8ef4 (patch)
tree470fe6a8c1ab863ad0c400d6e19924c2d265ac68 /sysdeps/pthread/tst-mutex5.c
parent9ff2674ef82eccd5ae5dfa6bb733c0e3613764c6 (diff)
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nptl: Fix PTHREAD_PRIO_PROTECT timed lock
The 878fe624d4 changed lll_futex_timed_wait, which expects a relative
timeout, with a __futex_abstimed_wait64, which expects an absolute
timeout.  However the code still passes a relative timeout.

Also, the PTHREAD_PRIO_PROTECT support for clocks different than
CLOCK_REALTIME was broken since the inclusion of
pthread_mutex_clocklock (9d20e22e46) since lll_futex_timed_wait
always use CLOCK_REALTIME.

This patch fixes by removing the relative time calculation.  It
also adds some xtests that tests both thread and inter-process
usage.

Checked on x86_64-linux-gnu.
Diffstat (limited to 'sysdeps/pthread/tst-mutex5.c')
-rw-r--r--sysdeps/pthread/tst-mutex5.c12
1 files changed, 11 insertions, 1 deletions
diff --git a/sysdeps/pthread/tst-mutex5.c b/sysdeps/pthread/tst-mutex5.c
index bfe1a79fa4..dbd2c3c15f 100644
--- a/sysdeps/pthread/tst-mutex5.c
+++ b/sysdeps/pthread/tst-mutex5.c
@@ -27,6 +27,9 @@
 #include <support/check.h>
 #include <support/timespec.h>
 
+#ifdef ENABLE_PP
+#include "tst-tpp.h"
+#endif
 
 #ifndef TYPE
 # define TYPE PTHREAD_MUTEX_NORMAL
@@ -47,8 +50,11 @@ do_test_clock (clockid_t clockid, const char *fnname)
   TEST_COMPARE (pthread_mutexattr_init (&a), 0);
   TEST_COMPARE (pthread_mutexattr_settype (&a, TYPE), 0);
 
-#ifdef ENABLE_PI
+#if defined ENABLE_PI
   TEST_COMPARE (pthread_mutexattr_setprotocol (&a, PTHREAD_PRIO_INHERIT), 0);
+#elif defined ENABLE_PP
+  TEST_COMPARE (pthread_mutexattr_setprotocol (&a, PTHREAD_PRIO_PROTECT), 0);
+  TEST_COMPARE (pthread_mutexattr_setprioceiling (&a, 6), 0);
 #endif
 
   int err = pthread_mutex_init (&m, &a);
@@ -110,6 +116,10 @@ do_test_clock (clockid_t clockid, const char *fnname)
 
 static int do_test (void)
 {
+#ifdef ENABLE_PP
+  init_tpp_test ();
+#endif
+
   do_test_clock (CLOCK_USE_TIMEDLOCK, "timedlock");
   do_test_clock (CLOCK_REALTIME, "clocklock(realtime)");
 #ifndef ENABLE_PI