TEST_F(MergeTests, DISABLED_parallel_heap_merger_delta_test) {
TableGenerator g(true);
hyrise::storage::atable_ptr_t main1 = g.int_random(1000, 1);
hyrise::storage::atable_ptr_t main2 = g.int_random(1000, 1);
hyrise::storage::atable_ptr_t delta = g.create_empty_table_modifiable(1000, 1);
// copy main2 into delta
delta->resize(main2->size());
for (size_t i = 0; i < main2->size(); ++i) {
hyrise_int_t v = main2->getValue<hyrise_int_t>(0, i);
delta->setValue<hyrise_int_t>(0, i, v);
}
// delta and main2 should be equal
ASSERT_TRUE(delta->contentEquals(main2));
std::vector<hyrise::storage::c_atable_ptr_t > tables1;
tables1.push_back(main1);
tables1.push_back(main2);
std::vector<hyrise::storage::c_atable_ptr_t> tables2;
tables2.push_back(main1);
tables2.push_back(delta);
TableMerger merger1(new DefaultMergeStrategy(), new SequentialHeapMerger());
const auto& result_1 = merger1.merge(tables1);
TableMerger merger2(new DefaultMergeStrategy(), new SequentialHeapMerger());
const auto& result_2 = merger2.merge(tables2);
ASSERT_TRUE(result_1[0]->contentEquals(result_2[0]));
}
TEST_F(MergeTests, logarithmic_vs_simple_merge_test) {
TableGenerator g(true);
hyrise::storage::atable_ptr_t main = g.int_random(1000, 1);
hyrise::storage::atable_ptr_t delta = g.int_random_delta(1000, 1);
std::vector<hyrise::storage::c_atable_ptr_t > tables;
tables.push_back(main);
tables.push_back(delta);
TableMerger merger1(new DefaultMergeStrategy(), new SequentialHeapMerger());
const auto& result_simple = merger1.merge(tables);
TableMerger merger2(new DefaultMergeStrategy(), new SequentialHeapMerger());
const auto& result_heap = merger2.merge(tables);
ASSERT_TRUE(result_simple[0]->contentEquals(result_heap[0]));
}
int main(int argc, char **argv)
{
int k, i, **fd_p_s, j, mergenow, mergenext, ***mergfd, n, num_to_wait = 0, len, in, out, count, carry, gener = 1;
char *s, key[3] = "0";
FILE *f = fopen("psort.log", "w");
freopen("out.txt", "w", stdout);
fclose(f);
setbuf(stdout, NULL);
semid = semget(IPC_PRIVATE, 1, 0);
semctl(semid, 0, SETVAL, (int)1);
k = atoi(argv[1]);// number of processes
if (argc == 3) // check if inputed key "-n"
strncpy(key, argv[2], 2);
mergfd = (int ***)malloc(1 * sizeof(int**)); //two arrays
mergfd[0] = (int**)malloc(k * sizeof(int*));
fd_p_s = (int**)malloc(k * sizeof(int*)); // fd from partitioner to sorter
s = (char*)malloc(1* sizeof(char));
for (i = 0; i < k; ++i) {
fd_p_s[i] = (int*)malloc(2 * sizeof(int));
mergfd[0][i] = (int*)malloc(2 * sizeof(int));
pipe(fd_p_s[i]);
}
if (!fork())
partitioner(fd_p_s, k);
for (i = 0; i < k; ++i)
close(fd_p_s[i][1]);
for (i = 0; i < k; ++i){
pipe(mergfd[0][i]);
if (!fork())
sorter(i, fd_p_s, k, key, mergfd[0][i][1]); //sort strings and sents it's part to mergfd[0][i][1]
}
num_to_wait = k + 1; //partitioner + k sorters
for (i = 0; i < k; ++i)
close(fd_p_s[i][0]);
//start to merge in turn,
mergenow = k;
while (mergenow != 1){
++gener;
mergenext = mergenow/2 + mergenow%2;
mergfd = (int ***)realloc(mergfd, gener * sizeof(int**));
mergfd[gener - 1] = (int**)malloc(mergenext * sizeof(int*));
for (i = 0; i < mergenext; ++i){
mergfd[gener - 1][i] = (int*)malloc(2 * sizeof(int));
pipe(mergfd[gener - 1][i]);
}
count = 0;
while (count < mergenow) {
if (count + 1 == mergenow) { // not even number of mergers on this iteration; reached last one without pair
if (!fork()){
merger1(mergfd[gener - 2][count][0], mergfd[gener - 1][count / 2][1], key, count/2, gener);
return 0;
}
}
else {
if (!fork()){
merger2(mergfd[gener - 2][count][0], mergfd[gener - 2][count + 1][0], mergfd[gener - 1][count / 2][1], key, count/2, gener);
return 0;
}
}
count +=2;
++num_to_wait;
}
for(i = 0; i < mergenow; ++i)
close(mergfd[gener - 2][i][0]);
for(i = 0; i < mergenext; ++i)
close(mergfd[gener - 1][i][1]);
mergenow = mergenext;
}
my_read(mergfd[gener - 1][0][0], &n, sizeof(int));
for (i = 0; i < n; ++i){
my_read(mergfd[gener - 1][0][0], &len, sizeof(len));
s = (char*)realloc(s, len * sizeof(char));
my_read(mergfd[gener - 1][0][0], s, len);
fputs(s, stdout);
printf("\n");
}
for (i = 0; i < num_to_wait; ++i)
wait(NULL);
free(s);
return 0;
}