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Random db flush crash simulator
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@ -21,7 +21,7 @@ CMD_GREP_DOCS = r"egrep -r -I 'HelpMessageOpt\(\"\-[^\"=]+?(=|\")' %s" % (CMD_RO
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REGEX_ARG = re.compile(r'(?:map(?:Multi)?Args(?:\.count\(|\[)|Get(?:Bool)?Arg\()\"(\-[^\"]+?)\"')
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REGEX_DOC = re.compile(r'HelpMessageOpt\(\"(\-[^\"=]+?)(?:=|\")')
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# list unsupported, deprecated and duplicate args as they need no documentation
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SET_DOC_OPTIONAL = set(['-rpcssl', '-benchmark', '-h', '-help', '-socks', '-tor', '-debugnet', '-whitelistalwaysrelay', '-prematurewitness', '-walletprematurewitness', '-promiscuousmempoolflags', '-blockminsize'])
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SET_DOC_OPTIONAL = set(['-rpcssl', '-benchmark', '-h', '-help', '-socks', '-tor', '-debugnet', '-whitelistalwaysrelay', '-prematurewitness', '-walletprematurewitness', '-promiscuousmempoolflags', '-blockminsize', '-dbcrashratio'])
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def main():
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used = check_output(CMD_GREP_ARGS, shell=True)
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11
src/txdb.cpp
11
src/txdb.cpp
@ -7,8 +7,10 @@
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#include "chainparams.h"
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#include "hash.h"
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#include "random.h"
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#include "pow.h"
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#include "uint256.h"
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#include "util.h"
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#include <stdint.h>
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@ -82,7 +84,7 @@ bool CCoinsViewDB::BatchWrite(CCoinsMap &mapCoins, const uint256 &hashBlock) {
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size_t count = 0;
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size_t changed = 0;
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size_t batch_size = (size_t)GetArg("-dbbatchsize", nDefaultDbBatchSize);
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int crash_simulate = GetArg("-dbcrashratio", 0);
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uint256 old_tip = GetBestBlock();
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if (old_tip.IsNull()) {
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@ -124,6 +126,13 @@ bool CCoinsViewDB::BatchWrite(CCoinsMap &mapCoins, const uint256 &hashBlock) {
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LogPrint(BCLog::COINDB, "Writing partial batch of %.2f MiB\n", batch.SizeEstimate() * (1.0 / 1048576.0));
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db.WriteBatch(batch);
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batch.Clear();
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if (crash_simulate) {
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static FastRandomContext rng;
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if (rng.randrange(crash_simulate) == 0) {
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LogPrintf("Simulating a crash. Goodbye.\n");
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exit(0);
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}
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}
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}
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}
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