#include "test.h++" class testcase_try : public testcase { public: testcase_try(const actor_config &config, const mdbx_pid_t pid) : testcase(config, pid) {} bool run() override; }; REGISTER_TESTCASE(try); bool testcase_try::run() { db_open(); assert(!txn_guard); MDBX_txn *txn = nullptr; MDBX_txn *txn2 = nullptr; int rc = mdbx_txn_begin(db_guard.get(), nullptr, MDBX_TXN_READWRITE, &txn); if (unlikely(rc != MDBX_SUCCESS)) failure_perror("mdbx_txn_begin(MDBX_TXN_TRY)", rc); else { rc = mdbx_txn_begin(db_guard.get(), nullptr, MDBX_TXN_TRY, &txn2); if (unlikely(rc != MDBX_BUSY)) failure_perror("mdbx_txn_begin(MDBX_TXN_TRY)", rc); } txn_guard.reset(txn); return true; }