#include "util.h"
#include "main.h"
#include "kernel.h"
+#include "ui_interface.h"
#include <boost/version.hpp>
#include <boost/filesystem.hpp>
#include <boost/filesystem/fstream.hpp>
dbenv.set_cachesize(nDbCache / 1024, (nDbCache % 1024)*1048576, 1);
dbenv.set_lg_bsize(1048576);
dbenv.set_lg_max(10485760);
- dbenv.set_lk_max_locks(10000);
+
+ // Bugfix: Bump lk_max_locks default to 537000, to safely handle reorgs with up to 5 blocks reversed
+ // dbenv.set_lk_max_locks(10000);
+ dbenv.set_lk_max_locks(537000);
+
dbenv.set_lk_max_objects(10000);
dbenv.set_errfile(fopen(pathErrorFile.string().c_str(), "a")); /// debug
dbenv.set_flags(DB_AUTO_COMMIT, 1);
fDbEnvInit = true;
fMockDb = false;
+
+ // Check that the number of locks is sufficient (to prevent chain fork possibility, read http://bitcoin.org/may15 for more info)
+ u_int32_t nMaxLocks;
+ if (!dbenv.get_lk_max_locks(&nMaxLocks))
+ {
+ int nBlocks, nDeepReorg;
+ std::string strMessage;
+
+ nBlocks = nMaxLocks / 48768;
+ nDeepReorg = (nBlocks - 1) / 2;
+
+ printf("Final lk_max_locks is %lu, sufficient for (worst case) %d block%s in a single transaction (up to a %d-deep reorganization)\n", (unsigned long)nMaxLocks, nBlocks, (nBlocks == 1) ? "" : "s", nDeepReorg);
+ if (nDeepReorg < 3)
+ {
+ if (nBlocks < 1)
+ strMessage = strprintf(_("Warning: DB_CONFIG has set_lk_max_locks %lu, which may be too low for a single block. If this limit is reached, NovaCoin may stop working."), (unsigned long)nMaxLocks);
+ else
+ strMessage = strprintf(_("Warning: DB_CONFIG has set_lk_max_locks %lu, which may be too low for a common blockchain reorganization. If this limit is reached, NovaCoin may stop working."), (unsigned long)nMaxLocks);
+
+ strMiscWarning = strMessage;
+ printf("*** %s\n", strMessage.c_str());
+ }
+ }
+
return true;
}