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opt Win32 load from file speed

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guoling
2025-05-07 15:50:53 +08:00
parent 2f54714b93
commit 467c44af67
1 changed files with 4 additions and 1 deletions
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Core/MemoryFile_Win32.cpp
+4 -1
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@@ -227,13 +227,16 @@ void MemoryFile::reloadFromFile(size_t expectedCapacity) {
}
if (openIfNeeded()) {
FileLock fileLock(m_diskFile.getFd());
InterProcessLock lock(&fileLock, ExclusiveLockType);
InterProcessLock lock(&fileLock, SharedLockType);
SCOPED_LOCK(&lock);
mmkv::getFileSize(m_diskFile.getFd(), m_size);
size_t expectedSize = std::max<size_t>(DEFAULT_MMAP_SIZE, roundUp<size_t>(expectedCapacity, DEFAULT_MMAP_SIZE));
// round up to (n * pagesize)
if (!m_readOnly && (m_size < expectedSize || (m_size % DEFAULT_MMAP_SIZE != 0))) {
InterProcessLock exclusiveLock(&fileLock, ExclusiveLockType);
SCOPED_LOCK(&exclusiveLock);
size_t roundSize = ((m_size / DEFAULT_MMAP_SIZE) + 1) * DEFAULT_MMAP_SIZE;;
roundSize = std::max<size_t>(expectedSize, roundSize);
truncate(roundSize, &fileLock);