diff options
Diffstat (limited to 'src/util.cpp')
| -rw-r--r-- | src/util.cpp | 23 |
1 files changed, 14 insertions, 9 deletions
diff --git a/src/util.cpp b/src/util.cpp index 08ee6b8b87..78c353dfe5 100644 --- a/src/util.cpp +++ b/src/util.cpp @@ -214,12 +214,13 @@ void OpenDebugLog() assert(vMsgsBeforeOpenLog); boost::filesystem::path pathDebug = GetDataDir() / "debug.log"; fileout = fopen(pathDebug.string().c_str(), "a"); - if (fileout) setbuf(fileout, NULL); // unbuffered - - // dump buffered messages from before we opened the log - while (!vMsgsBeforeOpenLog->empty()) { - FileWriteStr(vMsgsBeforeOpenLog->front(), fileout); - vMsgsBeforeOpenLog->pop_front(); + if (fileout) { + setbuf(fileout, NULL); // unbuffered + // dump buffered messages from before we opened the log + while (!vMsgsBeforeOpenLog->empty()) { + FileWriteStr(vMsgsBeforeOpenLog->front(), fileout); + vMsgsBeforeOpenLog->pop_front(); + } } delete vMsgsBeforeOpenLog; @@ -723,13 +724,17 @@ void AllocateFileRange(FILE *file, unsigned int offset, unsigned int length) { void ShrinkDebugFile() { + // Amount of debug.log to save at end when shrinking (must fit in memory) + constexpr size_t RECENT_DEBUG_HISTORY_SIZE = 10 * 1000000; // Scroll debug.log if it's getting too big boost::filesystem::path pathLog = GetDataDir() / "debug.log"; FILE* file = fopen(pathLog.string().c_str(), "r"); - if (file && boost::filesystem::file_size(pathLog) > 10 * 1000000) + // If debug.log file is more than 10% bigger the RECENT_DEBUG_HISTORY_SIZE + // trim it down by saving only the last RECENT_DEBUG_HISTORY_SIZE bytes + if (file && boost::filesystem::file_size(pathLog) > 11 * (RECENT_DEBUG_HISTORY_SIZE / 10)) { // Restart the file with some of the end - std::vector <char> vch(200000,0); + std::vector<char> vch(RECENT_DEBUG_HISTORY_SIZE, 0); fseek(file, -((long)vch.size()), SEEK_END); int nBytes = fread(vch.data(), 1, vch.size(), file); fclose(file); @@ -834,4 +839,4 @@ std::string CopyrightHolders(const std::string& strPrefix) strCopyrightHolders += "\n" + strPrefix + "The Bitcoin Core developers"; } return strCopyrightHolders; -} +}
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