Method mmap

core/src/main/java/io/questdb/std/Files.java:376–380

(long fd, long len, long offset, int flags, int memoryTag)

    }

    public static long mmap(long fd, long len, long offset, int flags, int memoryTag) {
        int osFd = fdCache.toOsFd(fd, (flags & MAP_RW) != 0);
        long mmapCacheKey = fdCache.toMmapCacheKey(fd);
        return mmapCache.cacheMmap(osFd, mmapCacheKey, len, offset, flags, memoryTag);
    }

    /**
     * Memory map without using the MmapCache. Useful for streaming reads where