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Improve heapapi implementation

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This commit is contained in:
Luke Street
2025-10-08 18:11:37 -06:00
parent ce57eb44a8
commit 2ffc56f5c2
3 changed files with 40 additions and 71 deletions
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103
dll/kernel32/heapapi.cpp
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@@ -26,7 +26,6 @@ void ensureProcessHeapInitialized() {
if (!record) {
return;
}
record->heap = heap;
record->isProcessHeap = true;
g_processHeapRecord = record.get();
g_processHeapHandle = wibo::handles().alloc(std::move(record), 0, 0);
@@ -91,31 +90,23 @@ HANDLE WIN_FUNC HeapCreate(DWORD flOptions, SIZE_T dwInitialSize, SIZE_T dwMaxim
}
auto record = make_pin<HeapObject>(heap);
record->heap = heap;
record->createFlags = flOptions;
record->initialSize = dwInitialSize;
record->maximumSize = dwMaximumSize;
record->isProcessHeap = false;
HANDLE handle = wibo::handles().alloc(std::move(record), 0, 0);
return handle;
return wibo::handles().alloc(std::move(record), 0, 0);
}
BOOL WIN_FUNC HeapDestroy(HANDLE hHeap) {
HOST_CONTEXT_GUARD();
DEBUG_LOG("HeapDestroy(%p)\n", hHeap);
auto record = wibo::handles().getAs<HeapObject>(hHeap);
if (!record) {
wibo::lastError = ERROR_INVALID_HANDLE;
return FALSE;
}
std::lock_guard lk(record->m);
if (record->isProcessHeap || record->heap == nullptr) {
if (!record || !record->isOwner() || record->isProcessHeap) {
wibo::lastError = ERROR_INVALID_HANDLE;
return FALSE;
}
mi_heap_destroy(record->heap);
record->heap = nullptr;
wibo::handles().release(hHeap);
return TRUE;
}
@@ -132,15 +123,10 @@ BOOL WIN_FUNC HeapSetInformation(HANDLE HeapHandle, HEAP_INFORMATION_CLASS HeapI
DEBUG_LOG("HeapSetInformation(%p, %d, %p, %zu)\n", HeapHandle, static_cast<int>(HeapInformationClass),
HeapInformation, HeapInformationLength);
auto record = wibo::handles().getAs<HeapObject>(HeapHandle);
if (!record) {
if (!record || !record->canAccess()) {
wibo::lastError = ERROR_INVALID_HANDLE;
return FALSE;
}
std::lock_guard lk(record->m);
if (!record->heap) {
wibo::lastError = ERROR_INVALID_PARAMETER;
return FALSE;
}
switch (HeapInformationClass) {
case HeapCompatibilityInformation: {
if (!HeapInformation || HeapInformationLength < sizeof(ULONG)) {
@@ -163,51 +149,39 @@ BOOL WIN_FUNC HeapSetInformation(HANDLE HeapHandle, HEAP_INFORMATION_CLASS HeapI
LPVOID WIN_FUNC HeapAlloc(HANDLE hHeap, DWORD dwFlags, SIZE_T dwBytes) {
HOST_CONTEXT_GUARD();
DEBUG_LOG("HeapAlloc(%p, 0x%x, %zu) ", hHeap, dwFlags, dwBytes);
VERBOSE_LOG("HeapAlloc(%p, 0x%x, %zu) ", hHeap, dwFlags, dwBytes);
auto record = wibo::handles().getAs<HeapObject>(hHeap);
if (!record) {
DEBUG_LOG("-> NULL\n");
if (!record || !record->canAccess()) {
VERBOSE_LOG("-> NULL\n");
wibo::lastError = ERROR_INVALID_HANDLE;
return nullptr;
}
std::lock_guard lk(record->m);
if (!record->heap) {
DEBUG_LOG("-> NULL\n");
wibo::lastError = ERROR_INVALID_PARAMETER;
return nullptr;
}
void *mem = heapAllocFromRecord(record.get(), dwFlags, dwBytes);
DEBUG_LOG("-> %p\n", mem);
VERBOSE_LOG("-> %p\n", mem);
return mem;
}
LPVOID WIN_FUNC HeapReAlloc(HANDLE hHeap, DWORD dwFlags, LPVOID lpMem, SIZE_T dwBytes) {
HOST_CONTEXT_GUARD();
DEBUG_LOG("HeapReAlloc(%p, 0x%x, %p, %zu) ", hHeap, dwFlags, lpMem, dwBytes);
VERBOSE_LOG("HeapReAlloc(%p, 0x%x, %p, %zu) ", hHeap, dwFlags, lpMem, dwBytes);
auto record = wibo::handles().getAs<HeapObject>(hHeap);
if (!record) {
DEBUG_LOG("-> NULL\n");
if (!record || !record->canAccess()) {
VERBOSE_LOG("-> NULL\n");
wibo::lastError = ERROR_INVALID_HANDLE;
return nullptr;
}
std::lock_guard lk(record->m);
if (!record->heap) {
DEBUG_LOG("-> NULL\n");
wibo::lastError = ERROR_INVALID_PARAMETER;
return nullptr;
}
if (lpMem == nullptr) {
void *alloc = heapAllocFromRecord(record.get(), dwFlags, dwBytes);
DEBUG_LOG("-> %p (alloc)\n", alloc);
VERBOSE_LOG("-> %p (alloc)\n", alloc);
return alloc;
}
// if (!mi_heap_check_owned(record->heap, lpMem)) {
// DEBUG_LOG("-> NULL (not owned)\n");
// wibo::lastError = ERROR_INVALID_PARAMETER;
// return nullptr;
// }
if (!mi_heap_check_owned(record->heap, lpMem)) {
VERBOSE_LOG("-> NULL (not owned)\n");
wibo::lastError = ERROR_INVALID_PARAMETER;
return nullptr;
}
if ((record->createFlags | dwFlags) & HEAP_GENERATE_EXCEPTIONS) {
DEBUG_LOG("-> NULL (exceptions unsupported)\n");
VERBOSE_LOG("-> NULL (exceptions unsupported)\n");
wibo::lastError = ERROR_NOT_SUPPORTED;
return nullptr;
}
@@ -216,10 +190,10 @@ LPVOID WIN_FUNC HeapReAlloc(HANDLE hHeap, DWORD dwFlags, LPVOID lpMem, SIZE_T dw
if (dwBytes == 0) {
if (!inplaceOnly) {
mi_free(lpMem);
DEBUG_LOG("-> NULL (freed)\n");
VERBOSE_LOG("-> NULL (freed)\n");
return nullptr;
}
DEBUG_LOG("-> NULL (zero size with in-place flag)\n");
VERBOSE_LOG("-> NULL (zero size with in-place flag)\n");
wibo::lastError = ERROR_NOT_ENOUGH_MEMORY;
return nullptr;
}
@@ -228,11 +202,11 @@ LPVOID WIN_FUNC HeapReAlloc(HANDLE hHeap, DWORD dwFlags, LPVOID lpMem, SIZE_T dw
const SIZE_T oldSize = mi_usable_size(lpMem);
if (inplaceOnly || requestSize <= oldSize) {
if (requestSize > oldSize) {
DEBUG_LOG("-> NULL (cannot grow in place)\n");
VERBOSE_LOG("-> NULL (cannot grow in place)\n");
wibo::lastError = ERROR_NOT_ENOUGH_MEMORY;
return nullptr;
}
DEBUG_LOG("-> %p (in-place)\n", lpMem);
VERBOSE_LOG("-> %p (in-place)\n", lpMem);
return lpMem;
}
@@ -251,30 +225,27 @@ LPVOID WIN_FUNC HeapReAlloc(HANDLE hHeap, DWORD dwFlags, LPVOID lpMem, SIZE_T dw
if (isExecutableHeap(record.get())) {
tryMarkExecutable(ret);
}
DEBUG_LOG("-> %p\n", ret);
VERBOSE_LOG("-> %p\n", ret);
return ret;
}
SIZE_T WIN_FUNC HeapSize(HANDLE hHeap, DWORD dwFlags, LPCVOID lpMem) {
HOST_CONTEXT_GUARD();
DEBUG_LOG("HeapSize(%p, 0x%x, %p)\n", hHeap, dwFlags, lpMem);
VERBOSE_LOG("HeapSize(%p, 0x%x, %p)\n", hHeap, dwFlags, lpMem);
(void)dwFlags;
auto record = wibo::handles().getAs<HeapObject>(hHeap);
if (!record) {
if (!record || !record->canAccess()) {
VERBOSE_LOG("-> ERROR_INVALID_HANDLE\n");
wibo::lastError = ERROR_INVALID_HANDLE;
return static_cast<SIZE_T>(-1);
}
std::lock_guard lk(record->m);
if (!record->heap) {
wibo::lastError = ERROR_INVALID_PARAMETER;
return static_cast<SIZE_T>(-1);
}
if (!lpMem) {
VERBOSE_LOG("-> ERROR_INVALID_PARAMETER\n");
wibo::lastError = ERROR_INVALID_PARAMETER;
return static_cast<SIZE_T>(-1);
}
if (!mi_heap_check_owned(record->heap, const_cast<LPVOID>(lpMem))) {
DEBUG_LOG("HeapSize: block %p not owned by heap %p\n", lpMem, record->heap);
if (!mi_heap_check_owned(record->heap, lpMem)) {
VERBOSE_LOG("-> ERROR_INVALID_PARAMETER (not owned)\n");
wibo::lastError = ERROR_INVALID_PARAMETER;
return static_cast<SIZE_T>(-1);
}
@@ -284,30 +255,24 @@ SIZE_T WIN_FUNC HeapSize(HANDLE hHeap, DWORD dwFlags, LPCVOID lpMem) {
BOOL WIN_FUNC HeapFree(HANDLE hHeap, DWORD dwFlags, LPVOID lpMem) {
HOST_CONTEXT_GUARD();
DEBUG_LOG("HeapFree(%p, 0x%x, %p)\n", hHeap, dwFlags, lpMem);
VERBOSE_LOG("HeapFree(%p, 0x%x, %p)\n", hHeap, dwFlags, lpMem);
(void)dwFlags;
if (lpMem == nullptr) {
return TRUE;
}
auto record = wibo::handles().getAs<HeapObject>(hHeap);
if (!record) {
DEBUG_LOG("-> INVALID_HANDLE\n");
if (!record || !record->canAccess()) {
VERBOSE_LOG("-> ERROR_INVALID_HANDLE\n");
wibo::lastError = ERROR_INVALID_HANDLE;
return FALSE;
}
std::lock_guard lk(record->m);
if (!record->heap) {
DEBUG_LOG("-> INVALID_PARAMETER\n");
wibo::lastError = ERROR_INVALID_PARAMETER;
return FALSE;
}
if (!mi_heap_check_owned(record->heap, lpMem)) {
DEBUG_LOG("-> INVALID_PARAMETER (not owned)\n");
VERBOSE_LOG("-> ERROR_INVALID_PARAMETER (not owned)\n");
wibo::lastError = ERROR_INVALID_PARAMETER;
return FALSE;
}
mi_free(lpMem);
DEBUG_LOG("-> SUCCESS\n");
VERBOSE_LOG("-> SUCCESS\n");
return TRUE;
}