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author | Lorry Tar Creator <lorry-tar-importer@lorry> | 2015-12-04 13:22:31 +0000 |
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committer | Lorry Tar Creator <lorry-tar-importer@lorry> | 2015-12-04 13:22:31 +0000 |
commit | 7b48bf2011b4020c4a5a2d5d4149b03983f72cc2 (patch) | |
tree | b07a064ee6bddbe6ddf73a98a9c131b5ab6a0f5f /libstdc++-v3/include/bits/atomic_futex.h | |
parent | 8cd167a5ad8baf4988e07fcbc9c9cc338c02d3d1 (diff) | |
download | gcc-tarball-7b48bf2011b4020c4a5a2d5d4149b03983f72cc2.tar.gz |
gcc-5.3.0gcc-5.3.0
Diffstat (limited to 'libstdc++-v3/include/bits/atomic_futex.h')
-rw-r--r-- | libstdc++-v3/include/bits/atomic_futex.h | 15 |
1 files changed, 8 insertions, 7 deletions
diff --git a/libstdc++-v3/include/bits/atomic_futex.h b/libstdc++-v3/include/bits/atomic_futex.h index ca3260d4ee..90317f2d01 100644 --- a/libstdc++-v3/include/bits/atomic_futex.h +++ b/libstdc++-v3/include/bits/atomic_futex.h @@ -93,15 +93,15 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION { for (;;) { - // Don't bother checking the value again because we expect the caller to - // have done it recently. + // Don't bother checking the value again because we expect the caller + // to have done it recently. // memory_order_relaxed is sufficient because we can rely on just the // modification order (store_notify uses an atomic RMW operation too), // and the futex syscalls synchronize between themselves. _M_data.fetch_or(_Waiter_bit, memory_order_relaxed); - bool __ret; - __ret = _M_futex_wait_until((unsigned*)(void*)&_M_data, - __assumed | _Waiter_bit, __has_timeout, __s, __ns); + bool __ret = _M_futex_wait_until((unsigned*)(void*)&_M_data, + __assumed | _Waiter_bit, + __has_timeout, __s, __ns); // Fetch the current value after waiting (clears _Waiter_bit). __assumed = _M_load(__mo); if (!__ret || ((__operand == __assumed) == __equal)) @@ -119,7 +119,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION bool __equal, memory_order __mo) { return _M_load_and_test_until(__assumed, __operand, __equal, __mo, - false, chrono::seconds(0), chrono::nanoseconds(0)); + false, {}, {}); } // If a timeout occurs, returns a current value after the timeout; @@ -146,7 +146,8 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION _M_load_when_not_equal(unsigned __val, memory_order __mo) { unsigned __i = _M_load(__mo); - if ((__i & ~_Waiter_bit) != __val) return; + if ((__i & ~_Waiter_bit) != __val) + return (__i & ~_Waiter_bit); // TODO Spin-wait first. return _M_load_and_test(__i, __val, false, __mo); } |