diff options
| author | Pieter Wuille <pieter.wuille@gmail.com> | 2017-08-01 12:40:42 -0700 |
|---|---|---|
| committer | Pieter Wuille <pieter.wuille@gmail.com> | 2017-08-01 12:40:42 -0700 |
| commit | 47f3e8c74d390139967cc40e37cf5b433f0b0f9f (patch) | |
| tree | f43c285be47ec5bc66a25a7fa1c072d2cd32dc97 /src/leveldb/port/port_win.cc | |
| parent | f66c59650527022b4f7abd98ff0a1a4e4741bd34 (diff) | |
| parent | b13a68e129f51b664e33b1894e33ebb7b94cdcc7 (diff) | |
| download | bitcoin-47f3e8c74d390139967cc40e37cf5b433f0b0f9f.tar.xz | |
Update LevelDB with latest Bitcoin-specific patches
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 +} + } } |