From 0fd82c910b8e4cbf0b3940d6e42f2e992287582d Mon Sep 17 00:00:00 2001
From: thankful_for_today <my email>
Date: Sun, 20 Apr 2014 00:53:40 +0400
Subject: [PATCH] mining bug fixed

---
 src/cryptonote_core/blockchain_storage.cpp |  4 +-
 src/cryptonote_core/tx_pool.cpp            | 57 +++++-----------------
 2 files changed, 14 insertions(+), 47 deletions(-)

diff --git a/src/cryptonote_core/blockchain_storage.cpp b/src/cryptonote_core/blockchain_storage.cpp
index cef988c40..c1b9619f2 100644
--- a/src/cryptonote_core/blockchain_storage.cpp
+++ b/src/cryptonote_core/blockchain_storage.cpp
@@ -572,7 +572,7 @@ bool blockchain_storage::create_block_template(block& b, const account_public_ad
   diffic = get_difficulty_for_next_block();
   CHECK_AND_ASSERT_MES(diffic, false, "difficulty owverhead.");
 
-  median_size = m_current_block_cumul_sz_limit;
+  median_size = m_current_block_cumul_sz_limit / 2;
   already_generated_coins = m_blocks.back().already_generated_coins;
 
   CRITICAL_REGION_END();
@@ -1603,4 +1603,4 @@ bool blockchain_storage::add_new_block(const block& bl_, block_verification_cont
   }
 
   return handle_block_to_main_chain(bl, id, bvc);
-}
\ No newline at end of file
+}
diff --git a/src/cryptonote_core/tx_pool.cpp b/src/cryptonote_core/tx_pool.cpp
index 6cd33a2d7..24e5752ad 100644
--- a/src/cryptonote_core/tx_pool.cpp
+++ b/src/cryptonote_core/tx_pool.cpp
@@ -348,60 +348,27 @@ namespace cryptonote
     return ss.str();
   }
   //---------------------------------------------------------------------------------
-  bool tx_memory_pool::fill_block_template(block &bl, size_t median_size, uint64_t already_generated_coins, size_t &total_size, uint64_t &fee) {
-    typedef transactions_container::value_type txv;
+  bool tx_memory_pool::fill_block_template(block &bl, size_t median_size, uint64_t already_generated_coins, size_t &total_size, uint64_t &fee)
+  {
     CRITICAL_REGION_LOCAL(m_transactions_lock);
 
-    std::vector<txv *> txs(m_transactions.size());
-    std::transform(m_transactions.begin(), m_transactions.end(), txs.begin(), [](txv &a) -> txv * { return &a; });
-    std::sort(txs.begin(), txs.end(), [](txv *a, txv *b) -> bool {
-      uint64_t a_hi, a_lo = mul128(a->second.fee, b->second.blob_size, &a_hi);
-      uint64_t b_hi, b_lo = mul128(b->second.fee, a->second.blob_size, &b_hi);
-      return a_hi > b_hi || (a_hi == b_hi && a_lo > b_lo);
-    });
-
-    size_t current_size = 0;
-    uint64_t current_fee = 0;
-    uint64_t best_money;
-    if (!get_block_reward(median_size, CRYPTONOTE_COINBASE_BLOB_RESERVED_SIZE, already_generated_coins, best_money)) {
-      LOG_ERROR("Block with just a miner transaction is already too large!");
-      return false;
-    }
-    size_t best_position = 0;
     total_size = 0;
     fee = 0;
 
+    size_t max_total_size = 2 * median_size - CRYPTONOTE_COINBASE_BLOB_RESERVED_SIZE;
     std::unordered_set<crypto::key_image> k_images;
-
-    for (size_t i = 0; i < txs.size(); i++) {
-      txv &tx(*txs[i]);
-
-      if(!is_transaction_ready_to_go(tx.second) || have_key_images(k_images, tx.second.tx)) {
-        txs[i] = NULL;
+    BOOST_FOREACH(transactions_container::value_type& tx, m_transactions)
+    {
+      if (max_total_size < total_size + tx.second.blob_size)
         continue;
-      }
-      append_key_images(k_images, tx.second.tx);
 
-      current_size += tx.second.blob_size;
-      current_fee += tx.second.fee;
-
-      uint64_t current_reward;
-      if (!get_block_reward(median_size, current_size + CRYPTONOTE_COINBASE_BLOB_RESERVED_SIZE, already_generated_coins, current_reward)) {
-        break;
-      }
-
-      if (best_money < current_reward + current_fee) {
-        best_money = current_reward + current_fee;
-        best_position = i + 1;
-        total_size = current_size;
-        fee = current_fee;
-      }
-    }
+      if (!is_transaction_ready_to_go(tx.second) || have_key_images(k_images, tx.second.tx))
+        continue;
 
-    for (size_t i = 0; i < best_position; i++) {
-      if (txs[i]) {
-        bl.tx_hashes.push_back(txs[i]->first);
-      }
+      bl.tx_hashes.push_back(tx.first);
+      total_size += tx.second.blob_size;
+      fee += tx.second.fee;
+      append_key_images(k_images, tx.second.tx);
     }
 
     return true;