Function test1

autotest/cpp/testblockcachewrite.cpp:80–105

}

static void test1()
{
    CPLJoinableThread *hThread;

    printf("Start test1\n");
    printf("main thread %p\n", (void *)CPLGetPID());

    GDALSetCacheMax(0);

    MyDataset *poDS = new MyDataset();

    char buf1[] = {1};
    CPL_IGNORE_RET_VAL(GDALRasterIO(GDALGetRasterBand(poDS, 1), GF_Write, 0, 0,
                                    1, 1, buf1, 1, 1, GDT_Byte, 0, 0));

    hThread = CPLCreateJoinableThread(thread_func1, nullptr);
    CPLSleep(0.3);
    CPL_IGNORE_RET_VAL(GDALRasterIO(GDALGetRasterBand(poDS, 1), GF_Write, 1, 0,
                                    1, 1, buf1, 1, 1, GDT_Byte, 0, 0));
    GDALFlushCacheBlock();

    CPLJoinThread(hThread);

    delete poDS;
    printf("End test1\n");
}

static void thread_func2(void * /* unused */)
{