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feat: add word processor, spreadsheet, kernel and userspace memory improvements

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This commit is contained in:
Daniel Hammer
2026-03-05 19:18:11 +01:00
parent fcb6f8e247
commit ead7d296f7
28 changed files with 4146 additions and 56 deletions
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kernel/src/Api/WinServer.cpp
+20 -7
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@@ -97,6 +97,19 @@ namespace WinServer {
}
}
// Unmap pixel pages from the owner's address space so that
// FreeUserHalf() won't double-free them when the process exits.
{
auto* ownerProc = Sched::GetProcessByPid(slot.ownerPid);
if (ownerProc) {
for (int p = 0; p < slot.pixelNumPages; p++) {
Memory::VMM::Paging::UnmapUserIn(
ownerProc->pml4Phys,
slot.ownerVa + (uint64_t)p * 0x1000);
}
}
}
// Free physical pixel pages
for (int i = 0; i < slot.pixelNumPages; i++) {
if (slot.pixelPhysPages[i] != 0) {
@@ -198,9 +211,11 @@ namespace WinServer {
int numPages = (int)((bufSize + 0xFFF) / 0x1000);
if (numPages > MaxPixelPages) return -1;
// Free old pixel pages before allocating new ones
// Unmap old pixel pages from owner's address space, then free them
int oldNumPages = slot.pixelNumPages;
for (int i = 0; i < oldNumPages; i++) {
Memory::VMM::Paging::UnmapUserIn(
ownerPml4, slot.ownerVa + (uint64_t)i * 0x1000);
if (slot.pixelPhysPages[i] != 0) {
Memory::g_pfa->Free((void*)Memory::HHDM(slot.pixelPhysPages[i]));
slot.pixelPhysPages[i] = 0;
@@ -271,12 +286,10 @@ namespace WinServer {
}
}
// Free physical pixel pages
for (int p = 0; p < g_slots[i].pixelNumPages; p++) {
if (g_slots[i].pixelPhysPages[p] != 0) {
Memory::g_pfa->Free((void*)Memory::HHDM(g_slots[i].pixelPhysPages[p]));
}
}
// Do NOT free physical pixel pages here — they are still mapped
// in the owner's page tables and FreeUserHalf() (called right
// after CleanupProcess) will free them. Freeing here would
// cause a double-free, creating a cycle in the PFA free list.
g_slots[i].used = false;
}