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Switched to binary pubkeys from base64 for internal user data (#29)

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* String copy optmisations.
* User pubkey binary.
This commit is contained in:
Ravin Perera
2019-10-16 06:45:49 +05:30
committed by GitHub
parent db99d94902
commit 8b003aeaa2
9 changed files with 72 additions and 53 deletions
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18
src/proc.cpp
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@@ -129,8 +129,16 @@ int write_to_stdin(const ContractExecArgs &args)
if (itr != userfds.begin())
os << ","; // Trailing comma separator for previous element.
// Write user pubkey and fds.
os << "\"" << itr->first << "\":["
// Get the base64 pubkey of the user.
std::string_view userpubkey = itr->first; // User pubkey in binary format.
std::string userpubkeyb64;
util::base64_encode(
userpubkeyb64,
reinterpret_cast<const unsigned char *>(userpubkey.data()),
userpubkey.length());
// Write user base64 pubkey and fds.
os << "\"" << userpubkeyb64 << "\":["
<< itr->second[FDTYPE::SCREAD] << ","
<< itr->second[FDTYPE::SCWRITE] << "]";
}
@@ -209,7 +217,7 @@ int write_verified_user_inputs(const ContractExecArgs &args)
if (vmsplice(writefd, memsegs, 1, 0) == -1)
{
std::cerr << "Error writing contract input (" << bufpair.first.length()
<< " bytes) from user " << pubkey << std::endl;
<< " bytes) from user" << std::endl;
}
// Close the writefd since we no longer need it for this round.
@@ -246,7 +254,7 @@ int read_contract_user_outputs(const ContractExecArgs &args)
if (bytes_available > 0)
{
bufpair.second.reserve(bytes_available); // bufpair.second is the output buffer.
bufpair.second.resize(bytes_available); // bufpair.second is the output buffer.
// Populate the user output buffer with new data from the pipe.
// We use vmsplice to map (zero-copy) the output from the fd.
@@ -261,7 +269,7 @@ int read_contract_user_outputs(const ContractExecArgs &args)
}
else
{
std::cout << "Contract produced " << bytes_available << " bytes for user " << pubkey << std::endl;
std::cout << "Contract produced " << bytes_available << " bytes for user" << std::endl;
}
}