Method getFdCacheRecord

core/src/main/java/io/questdb/std/FdCache.java:283–306

(LPSZ lpsz)

    }

    @Nullable
    private FdCacheRecord getFdCacheRecord(LPSZ lpsz) {
        int keyIndex = openFdMapByPath.keyIndex(lpsz);
        final FdCacheRecord holder;
        if (keyIndex > -1) {
            int osFd = Files.openRO(lpsz.ptr());
            if (osFd < 0) {
                // Failed to open
                holder = null;
            } else {
                OPEN_OS_FILE_COUNT.incrementAndGet();
                Utf8String path = Utf8String.newInstance(lpsz);
                holder = createFdCacheRecord(path, mmapKeyGenerator.getAndIncrement());
                holder.osFd = osFd;
                // Reuse the same Utf8String for the map key so putAt picks the
                // Utf8String overload and skips its own newInstance() copy.
                openFdMapByPath.putAt(keyIndex, path, holder);
            }
        } else {
            holder = openFdMapByPath.valueAtQuick(keyIndex);
            fdReuseCount++;
        }
        return holder;
    }

    private int nextIndex() {
        int raw = fdCounter.getAndIncrement();