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| author | Wladimir J. van der Laan <laanwj@gmail.com> | 2017-08-02 08:57:38 +0200 |
|---|---|---|
| committer | Wladimir J. van der Laan <laanwj@gmail.com> | 2017-08-02 09:00:49 +0200 |
| commit | 659c096134080034b5a5cdce4bdd8cae91632f63 (patch) | |
| tree | 7de6630b899844accd600942637099dccb28fda1 /src/leveldb/port/port_win.cc | |
| parent | f0579bfea1db3c35bbbea250445fc57c167adfc0 (diff) | |
| parent | 47f3e8c74d390139967cc40e37cf5b433f0b0f9f (diff) | |
| download | bitcoin-659c096134080034b5a5cdce4bdd8cae91632f63.tar.xz | |
Merge #10958: Update to latest Bitcoin patches for LevelDB
b13a68e Squashed 'src/leveldb/' changes from 196962ff0..c521b3ac6 (Pieter Wuille)
Pull request description:
Includes:
* https://github.com/bitcoin-core/leveldb/pull/2: Prefer std::atomic over MemoryBarrier (Pieter Wuille)
* https://github.com/bitcoin-core/leveldb/pull/5: Move helper functions out of sse4.2 object (Cory Fields)
* https://github.com/bitcoin-core/leveldb/pull/6: Fixes typo (Dimitris Tsapakidis)
* https://github.com/bitcoin-core/leveldb/pull/10: Clean up compile-time warnings (gcc 7.1) (Matt Corallo)
* https://github.com/bitcoin-core/leveldb/pull/11: fixup define checks. Cleans up some oopses from #5 (Cory Fields)
Tree-SHA512: 2b88a99a86ed8c74c860de13a123ea7f5424d35d314be564820cf83aaae8308383403f7cd56f17c241cfee4885699796141fed666559c21044eaabaeea073315
Diffstat (limited to 'src/leveldb/port/port_win.cc')
| -rw-r--r-- | src/leveldb/port/port_win.cc | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/src/leveldb/port/port_win.cc b/src/leveldb/port/port_win.cc index 1b0f060a19..1be9e8d5b0 100644 --- a/src/leveldb/port/port_win.cc +++ b/src/leveldb/port/port_win.cc @@ -32,6 +32,7 @@ #include <windows.h> #include <cassert> +#include <intrin.h> namespace leveldb { namespace port { @@ -143,5 +144,15 @@ void AtomicPointer::NoBarrier_Store(void* v) { rep_ = v; } +bool HasAcceleratedCRC32C() { +#if defined(__x86_64__) || defined(__i386__) + int cpu_info[4]; + __cpuid(cpu_info, 1); + return (cpu_info[2] & (1 << 20)) != 0; +#else + return false; +#endif +} + } } |