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| author | Jeff Garzik <jeff@garzik.org> | 2010-11-23 23:54:37 -0500 |
|---|---|---|
| committer | Jeff Garzik <jgarzik@redhat.com> | 2010-11-23 23:54:37 -0500 |
| commit | 16b535e2dd9075956c9ad47f2193fadf19a781b6 (patch) | |
| tree | 31ee760ab4d78508873ded01d89efa58e0044fe2 /cpu-miner.c | |
| parent | 9bc3649e9190a7ba847d56ffeab1cbbae4481f2c (diff) | |
Add some code comments.
Diffstat (limited to 'cpu-miner.c')
| -rw-r--r-- | cpu-miner.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/cpu-miner.c b/cpu-miner.c index 4fa6d9b..a78e13f 100644 --- a/cpu-miner.c +++ b/cpu-miner.c @@ -281,6 +281,7 @@ static const uint32_t init_state[8] = { 0x510e527f, 0x9b05688c, 0x1f83d9ab, 0x5be0cd19 }; +/* suspiciously similar to ScanHash* from bitcoin */ static uint32_t scanhash(unsigned char *midstate, unsigned char *data, unsigned char *hash1, unsigned char *hash) { @@ -320,9 +321,11 @@ static void submit_work(struct work *work) printf("PROOF OF WORK FOUND\n"); + /* build hex string */ for (i = 0; i < sizeof(work->data); i++) sprintf(hexstr + (i * 2), "%02x", work->data[i]); + /* build JSON-RPC request */ if (asprintf(&s, "{\"method\": \"getwork\", \"params\": [ \"%s\" ], \"id\":1}\r\n", hexstr) < 0) { @@ -333,6 +336,7 @@ static void submit_work(struct work *work) if (opt_debug) fprintf(stderr, "DBG: sending RPC call:\n%s", s); + /* issue JSON-RPC request */ val = json_rpc_call(url, userpass, s); if (!val) { fprintf(stderr, "submit_work json_rpc_call failed\n"); @@ -353,6 +357,7 @@ static int main_loop(void) struct work *work; uint32_t nonce; + /* obtain new work from bitcoin */ val = json_rpc_call(url, userpass, rpc_req); if (!val) { fprintf(stderr, "json_rpc_call failed\n"); @@ -365,6 +370,7 @@ static int main_loop(void) free(s); } + /* decode result into work state struct */ work = work_decode(json_object_get(val, "result")); if (!work) { fprintf(stderr, "work decode failed\n"); @@ -373,9 +379,11 @@ static int main_loop(void) json_decref(val); + /* scan nonces for a proof-of-work hash */ nonce = scanhash(work->midstate, work->data + 64, work->hash1, work->hash); + /* if nonce found, submit work */ if (nonce) { submit_work(work); |