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-rw-r--r--src/leveldb/port/port_example.h4
1 files changed, 4 insertions, 0 deletions
diff --git a/src/leveldb/port/port_example.h b/src/leveldb/port/port_example.h
index 97bd669a5e..5b1d027de5 100644
--- a/src/leveldb/port/port_example.h
+++ b/src/leveldb/port/port_example.h
@@ -129,6 +129,10 @@ extern bool Snappy_Uncompress(const char* input_data, size_t input_length,
// The concatenation of all "data[0,n-1]" fragments is the heap profile.
extern bool GetHeapProfile(void (*func)(void*, const char*, int), void* arg);
+// Determine whether a working accelerated crc32 implementation exists
+// Returns true if AcceleratedCRC32C is safe to call
+bool HasAcceleratedCRC32C();
+
// Extend the CRC to include the first n bytes of buf.
//
// Returns zero if the CRC cannot be extended using acceleration, else returns