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| author | Carlos O'Donell <carlos@systemhalted.org> | 2015-01-21 00:46:16 -0500 |
|---|---|---|
| committer | Carlos O'Donell <carlos@systemhalted.org> | 2015-01-21 00:46:16 -0500 |
| commit | 042e1521c794a945edc43b5bfa7e69ad70420524 (patch) | |
| tree | 74f44d4b065d801cfe6ace654827ca8ef351bff8 /nptl/Makefile | |
| parent | a8db092ec0c6742a9d41e1715946e90d4edfeec1 (diff) | |
| download | glibc-042e1521c794a945edc43b5bfa7e69ad70420524.tar glibc-042e1521c794a945edc43b5bfa7e69ad70420524.tar.gz glibc-042e1521c794a945edc43b5bfa7e69ad70420524.tar.bz2 glibc-042e1521c794a945edc43b5bfa7e69ad70420524.zip | |
Fix semaphore destruction (bug 12674).
This commit fixes semaphore destruction by either using 64b atomic
operations (where available), or by using two separate fields when only
32b atomic operations are available. In the latter case, we keep a
conservative estimate of whether there are any waiting threads in one
bit of the field that counts the number of available tokens, thus
allowing sem_post to atomically both add a token and determine whether
it needs to call futex_wake.
See:
https://sourceware.org/ml/libc-alpha/2014-12/msg00155.html
Diffstat (limited to 'nptl/Makefile')
| -rw-r--r-- | nptl/Makefile | 5 |
1 files changed, 2 insertions, 3 deletions
diff --git a/nptl/Makefile b/nptl/Makefile index ce2d0e4ddd..43d85103f8 100644 --- a/nptl/Makefile +++ b/nptl/Makefile @@ -100,7 +100,7 @@ libpthread-routines = nptl-init vars events version \ sem_init sem_destroy \ sem_open sem_close sem_unlink \ sem_getvalue \ - sem_wait sem_trywait sem_timedwait sem_post \ + sem_wait sem_timedwait sem_post \ cleanup cleanup_defer cleanup_compat \ cleanup_defer_compat unwind \ pt-longjmp pt-cleanup\ @@ -283,8 +283,7 @@ tests-nolibpthread = tst-unload gen-as-const-headers = pthread-errnos.sym \ lowlevelcond.sym lowlevelrwlock.sym \ lowlevelbarrier.sym unwindbuf.sym \ - lowlevelrobustlock.sym pthread-pi-defines.sym \ - structsem.sym + lowlevelrobustlock.sym pthread-pi-defines.sym LDFLAGS-pthread.so = -Wl,--enable-new-dtags,-z,nodelete,-z,initfirst |