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Create a function that generates a GBT coinbase from the existing pool variables.

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This commit is contained in:
Con Kolivas 2012-11-01 22:34:08 +11:00
parent 813e814f6c
commit 4a72a1574f
2 changed files with 24 additions and 1 deletions
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22
cgminer.c
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@ -1357,6 +1357,27 @@ static void calc_midstate(struct work *work)
#endif #endif
} }
/* Generate a GBT coinbase from the existing GBT variables stored. Must be
* entered under gbt_lock */
static void __build_gbt_coinbase(struct pool *pool)
{
unsigned char *coinbase;
uint8_t *extra_len;
int cbt_len;
cbt_len = strlen(pool->coinbasetxn) / 2;
/* We add 4 bytes of extra data corresponding to nonce2 of stratum */
coinbase = calloc(cbt_len + 4, 1);
hex2bin(coinbase, pool->coinbasetxn, 42);
extra_len = (uint8_t *)(coinbase + 41);
*extra_len += 4;
hex2bin(coinbase + 42, pool->coinbasetxn + 84, cbt_len - 42);
pool->nonce2++;
memcpy(coinbase + cbt_len, &pool->nonce2, 4);
free(pool->gbt_coinbase);
pool->gbt_coinbase = coinbase;
}
static bool gbt_decode(struct pool *pool, json_t *res_val) static bool gbt_decode(struct pool *pool, json_t *res_val)
{ {
const char *previousblockhash; const char *previousblockhash;
@ -1410,6 +1431,7 @@ static bool gbt_decode(struct pool *pool, json_t *res_val)
pool->curtime = htobe32(curtime); pool->curtime = htobe32(curtime);
pool->gbt_submitold = submitold; pool->gbt_submitold = submitold;
pool->gbt_bits = strdup(bits); pool->gbt_bits = strdup(bits);
__build_gbt_coinbase(pool);
mutex_unlock(&pool->gbt_lock); mutex_unlock(&pool->gbt_lock);
return true; return true;

1
miner.h
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@ -896,6 +896,7 @@ struct pool {
uint32_t curtime; uint32_t curtime;
bool gbt_submitold; bool gbt_submitold;
char *gbt_bits; char *gbt_bits;
unsigned char *gbt_coinbase;
}; };