Introducing ethash

1 files changed, 43 insertions, 0 deletions

diff --git a/Godeps/_workspace/src/github.com/ethereum/ethash/libethash-cl/ethash_cl_miner.h b/Godeps/_workspace/src/github.com/ethereum/ethash/libethash-cl/ethash_cl_miner.h
new file mode 100644
index 000000000..f37100d91
--- /dev/null
+++ b/Godeps/_workspace/src/github.com/ethereum/ethash/libethash-cl/ethash_cl_miner.h
@@ -0,0 +1,43 @@
+#pragma once
+
+#define __CL_ENABLE_EXCEPTIONS 
+#define CL_USE_DEPRECATED_OPENCL_2_0_APIS
+#include "cl.hpp"
+#include <time.h>
+#include <libethash/ethash.h>
+
+class ethash_cl_miner
+{
+public:
+	struct search_hook
+	{
+		// reports progress, return true to abort
+		virtual bool found(uint64_t const* nonces, uint32_t count) = 0;
+		virtual bool searched(uint64_t start_nonce, uint32_t count) = 0;
+	};
+
+public:
+	ethash_cl_miner();
+
+	bool init(ethash_params const& params, const uint8_t seed[32], unsigned workgroup_size = 64);
+
+	void hash(uint8_t* ret, uint8_t const* header, uint64_t nonce, unsigned count);
+	void search(uint8_t const* header, uint64_t target, search_hook& hook);
+
+private:
+	static unsigned const c_max_search_results = 63;
+	static unsigned const c_num_buffers = 2;
+	static unsigned const c_hash_batch_size = 1024;
+	static unsigned const c_search_batch_size = 1024*256;
+
+	ethash_params m_params;
+	cl::Context m_context;
+	cl::CommandQueue m_queue;
+	cl::Kernel m_hash_kernel;
+	cl::Kernel m_search_kernel;
+	cl::Buffer m_dag;
+	cl::Buffer m_header;
+	cl::Buffer m_hash_buf[c_num_buffers];
+	cl::Buffer m_search_buf[c_num_buffers];
+	unsigned m_workgroup_size;
+};
\ No newline at end of file