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wallet: protect against exceptions in the block pull thread 

This can happen when the daemon exits, which would also cause
the wallet to crash via unhandled exception
This commit is contained in:
moneromooo-monero 2015-12-30 12:43:15 +00:00
parent af2106122d
commit 92ef6b54fe
No known key found for this signature in database
GPG Key ID: 686F07454D6CEFC3
2 changed files with 31 additions and 15 deletions
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44
src/wallet/wallet2.cpp
View File

@ -648,21 +648,30 @@ void wallet2::refresh(uint64_t start_height, uint64_t & blocks_fetched)
refresh(start_height, blocks_fetched, received_money);
}
//----------------------------------------------------------------------------------------------------
void wallet2::pull_next_blocks(uint64_t start_height, uint64_t &blocks_start_height, std::list<crypto::hash> &short_chain_history, const std::list<cryptonote::block_complete_entry> &prev_blocks, std::list<cryptonote::block_complete_entry> &blocks)
void wallet2::pull_next_blocks(uint64_t start_height, uint64_t &blocks_start_height, std::list<crypto::hash> &short_chain_history, const std::list<cryptonote::block_complete_entry> &prev_blocks, std::list<cryptonote::block_complete_entry> &blocks, bool &error)
{
// prepend the last 3 blocks, should be enough to guard against a block or two's reorg
cryptonote::block bl;
std::list<cryptonote::block_complete_entry>::const_reverse_iterator i = prev_blocks.rbegin();
for (size_t n = 0; n < std::min((size_t)3, prev_blocks.size()); ++n)
{
bool ok = cryptonote::parse_and_validate_block_from_blob(i->block, bl);
THROW_WALLET_EXCEPTION_IF(!ok, error::block_parse_error, i->block);
short_chain_history.push_front(cryptonote::get_block_hash(bl));
++i;
}
error = false;
// pull the new blocks
pull_blocks(start_height, blocks_start_height, short_chain_history, blocks);
try
{
// prepend the last 3 blocks, should be enough to guard against a block or two's reorg
cryptonote::block bl;
std::list<cryptonote::block_complete_entry>::const_reverse_iterator i = prev_blocks.rbegin();
for (size_t n = 0; n < std::min((size_t)3, prev_blocks.size()); ++n)
{
bool ok = cryptonote::parse_and_validate_block_from_blob(i->block, bl);
THROW_WALLET_EXCEPTION_IF(!ok, error::block_parse_error, i->block);
short_chain_history.push_front(cryptonote::get_block_hash(bl));
++i;
}
// pull the new blocks
pull_blocks(start_height, blocks_start_height, short_chain_history, blocks);
}
catch(...)
{
error = true;
}
}
//----------------------------------------------------------------------------------------------------
void wallet2::refresh(uint64_t start_height, uint64_t & blocks_fetched, bool& received_money)
@ -689,7 +698,8 @@ void wallet2::refresh(uint64_t start_height, uint64_t & blocks_fetched, bool& re
// pull the next set of blocks while we're processing the current one
uint64_t next_blocks_start_height;
std::list<cryptonote::block_complete_entry> next_blocks;
pull_thread = std::thread([&]{pull_next_blocks(start_height, next_blocks_start_height, short_chain_history, blocks, next_blocks);});
bool error = false;
pull_thread = std::thread([&]{pull_next_blocks(start_height, next_blocks_start_height, short_chain_history, blocks, next_blocks, error);});
process_blocks(blocks_start_height, blocks, added_blocks);
blocks_fetched += added_blocks;
@ -700,6 +710,12 @@ void wallet2::refresh(uint64_t start_height, uint64_t & blocks_fetched, bool& re
// switch to the new blocks from the daemon
blocks_start_height = next_blocks_start_height;
blocks = next_blocks;
// handle error from async fetching thread
if (error)
{
throw std::runtime_error("proxy exception in refresh thread");
}
}
catch (const std::exception&)
{

2
src/wallet/wallet2.h
View File

@ -359,7 +359,7 @@ namespace tools
bool is_transfer_unlocked(const transfer_details& td) const;
bool clear();
void pull_blocks(uint64_t start_height, uint64_t& blocks_start_height, const std::list<crypto::hash> &short_chain_history, std::list<cryptonote::block_complete_entry> &blocks);
void pull_next_blocks(uint64_t start_height, uint64_t &blocks_start_height, std::list<crypto::hash> &short_chain_history, const std::list<cryptonote::block_complete_entry> &prev_blocks, std::list<cryptonote::block_complete_entry> &blocks);
void pull_next_blocks(uint64_t start_height, uint64_t &blocks_start_height, std::list<crypto::hash> &short_chain_history, const std::list<cryptonote::block_complete_entry> &prev_blocks, std::list<cryptonote::block_complete_entry> &blocks, bool &error);
void process_blocks(uint64_t start_height, const std::list<cryptonote::block_complete_entry> &blocks, uint64_t& blocks_added);
uint64_t select_transfers(uint64_t needed_money, bool add_dust, uint64_t dust, std::list<transfer_container::iterator>& selected_transfers);
bool prepare_file_names(const std::string& file_path);