Function AcquireFirstResource

autotest/cpp/testblockcache.cpp:166–181

}

static Resource *AcquireFirstResource()
{
    if (psLock)
        CPLAcquireLock(psLock);
    Resource *psRet = psGlobalResourceList;
    psGlobalResourceList = psGlobalResourceList->psNext;
    if (psGlobalResourceList)
        psGlobalResourceList->psPrev = nullptr;
    else
        psGlobalResourceLast = nullptr;
    psRet->psNext = nullptr;
    CPLAssert(psRet->psPrev == nullptr);
    if (psLock)
        CPLReleaseLock(psLock);
    return psRet;
}

static void PutResourceAtEnd(Resource *psResource)
{