Rakarake/churf
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

Fixed bugs on freeing chunks and stack-scanning

Browse source 
Co-authored-by: ValterMiari <ValterMiari@users.noreply.github.com>
This commit is contained in:
Victor Olin 2023-02-22 18:30:15 +01:00
parent 1ccf3dac6b
commit bdca6ffc85
7 changed files with 53 additions and 53 deletions
Download patch file Download diff file Expand all files Collapse all files

57
src/GC/lib/heap.cpp
View file

@ -147,14 +147,14 @@ namespace GC {
std::vector<Chunk *> filtered;
size_t i = 0;
filtered.push_back(heap->m_freed_chunks.at(i++));
//cout << filtered.back()->start << endl;
cout << filtered.back()->start << endl;
for (; i < heap->m_freed_chunks.size(); i++) {
auto prev = filtered.back();
cout << "Previous start:\t" << prev->start << endl;
cout << "Previous end:\t" << prev->start + prev->size << endl;
auto next = heap->m_freed_chunks.at(i);
cout << "Next start:\t" << next->start << endl;
if (next->start > (prev->start + prev->size)) {
auto p_start = (uintptr_t)(prev->start);
auto p_size = (uintptr_t)(prev->size);
auto n_start = (uintptr_t)(next->start);
if (n_start >= (p_start + p_size)) {
filtered.push_back(next);
}
}
@ -186,7 +186,6 @@ namespace GC {
cout << "Stack end in collect:\t " << stack_end << endl;
auto work_list = heap->m_allocated_chunks;
//print_worklist(work_list);
if (flags & MARK) {
mark(stack_start, stack_end, work_list);
@ -229,33 +228,35 @@ namespace GC {
void Heap::mark(uintptr_t *start, const uintptr_t *end, vector<Chunk*> worklist) {
int counter = 0;
// To find adresses thats in the worklist
for (; start > end; start--) {
for (; start < end; start++) {
counter++;
// all pointers must be aligned as double words
if (*start % 8 == 0) {
for (auto it = worklist.begin(); it != worklist.end();) {
Chunk *chunk = *it;
uintptr_t c_start = reinterpret_cast<uintptr_t>(chunk->start);
uintptr_t c_end = reinterpret_cast<uintptr_t>(chunk->start + chunk->size);
// Check if the stack pointer aligns with the chunk
//if ((c_start <= *start && *start < c_end) && chunk != nullptr) {
if (c_start == *start) {
cout << "Start points to:\t" << hex << *start << endl;
cout << "Chunk start:\t\t" << hex << c_start << endl;
cout << "Chunk end:\t\t" << hex << c_end << "\n" << endl;
if (!chunk->marked) {
chunk->marked = true;
it = worklist.erase(it);
}
else
++it;
}
else
for (auto it = worklist.begin(); it != worklist.end();) {
Chunk *chunk = *it;
if (chunk == nullptr) {
assert(false && "EPIC FAIL");
}
uintptr_t c_start = reinterpret_cast<uintptr_t>(chunk->start);
uintptr_t c_end = reinterpret_cast<uintptr_t>(chunk->start + chunk->size);
// Check if the stack pointer aligns with the chunk
if (c_start <= *start && *start < c_end) {
//if (c_start == *start) {
cout << "Start points to:\t" << hex << *start << endl;
cout << "Chunk start:\t\t" << hex << c_start << endl;
cout << "Chunk end:\t\t" << hex << c_end << "\n" << endl;
if (!chunk->marked) {
chunk->marked = true;
it = worklist.erase(it);
}
else {
++it;
}
}
else {
++it;
}
}
}
cout << "Counter: " << counter << endl;