addition dependency chain
diff --git a/demos/catcher.cc b/demos/catcher.cc
index 196d462..9afcbc9 100644
--- a/demos/catcher.cc
+++ b/demos/catcher.cc
@@ -56,19 +56,7 @@
return 0;
}
-struct pointer_chase_t {
- pointer_chase_t *next;
- int data;
-};
-
int main(int argc, char* argv[]) {
- pointer_chase_t *head = nullptr;
- for (int i = 0; i < 10; ++i) {
- auto *current = reinterpret_cast<pointer_chase_t*>(new char[2*kPageBytes]);
- current->next = head;
- current->data = i;
- head = current;
- }
void* k = mmap(nullptr, kPageBytes, PROT_READ | PROT_WRITE, MAP_ANONYMOUS | MAP_PRIVATE | MAP_POPULATE, -1, 0);
if (k == MAP_FAILED) {
@@ -87,19 +75,23 @@
for (int i = 0; i < 100000; ++i) {
ta.FlushFromCache();
- auto *current = head;
- for (int j = 0; j < 10; ++j) {
- FlushFromDataCache(current, current+1);
- current = current->next;
- }
- bool saw_exception = RunWithFaultHandler([&ta, head, k]() {
- ForceRead(&head->next->next->next->next->next->next->data);
+ bool saw_exception = RunWithFaultHandler([&ta, i, k]() {
+ int j = i;
+ j += i;
+ j += i;
+ j += i;
+ j += i;
+ j += i;
+ j += i;
+ j += i;
+ *(volatile int*)&j = j + i;
ForceRead(&ta[*(volatile int*)k]);
+ // ForceRead(&ta[j]);
}, [&ta](int signal, siginfo_t *info, void *ucontext) {
// std::cout << "saw signal " << signal << std::endl;
int n = ta.FindFirstCachedElementIndex();
- if (n >= 0) {
+ if (n > 0) {
std::cout << "extracted " << n << std::endl;
}
});
