mirror of
https://github.com/KytyPS5/KytyPS5.git
synced 2026-10-19 18:36:53 +02:00
Initial commit
This commit is contained in:
nmzik
@@ -0,0 +1,631 @@
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#include "graphics/host_gpu/pageManager.h"
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#include <atomic>
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#include <cstdint>
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#include <cstdio>
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#include <cstdlib>
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#include <cstring>
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#include <memory>
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#include <string>
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#include <thread>
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#include <vector>
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#if KYTY_PLATFORM == KYTY_PLATFORM_WINDOWS
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#ifndef NOMINMAX
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#define NOMINMAX
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#endif
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#include <windows.h>
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#undef min
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#undef max
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#endif
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namespace {
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using Libs::Graphics::GpuAccess;
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using Libs::Graphics::PageFaultAccess;
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using Libs::Graphics::PageManager;
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void Check(bool value, const char *text) {
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if (!value) {
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std::fprintf(stderr, "PageManagerTests: failed: %s\n", text);
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std::abort();
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}
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}
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#if KYTY_PLATFORM == KYTY_PLATFORM_WINDOWS
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bool IsWritable(const void *address) {
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MEMORY_BASIC_INFORMATION info{};
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Check(VirtualQuery(address, &info, sizeof(info)) != 0, "VirtualQuery failed");
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return info.Protect == PAGE_READWRITE;
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}
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uint32_t Protection(const void *address) {
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MEMORY_BASIC_INFORMATION info{};
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Check(VirtualQuery(address, &info, sizeof(info)) != 0, "VirtualQuery failed");
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return info.Protect;
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}
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struct FaultContext {
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PageManager *manager = nullptr;
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bool result = true;
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bool reenter = false;
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uint64_t reenter_address = 0;
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bool block = false;
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std::atomic_uint32_t calls{0};
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std::atomic_bool entered{false};
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std::atomic_bool release{false};
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};
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std::atomic<PageManager *> g_native_fault_manager{nullptr};
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std::atomic_bool g_delay_native_fault{false};
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std::atomic_bool g_native_fault_entered{false};
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std::atomic_bool g_release_native_fault{false};
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LONG CALLBACK NativeFaultHandler(EXCEPTION_POINTERS *exception) {
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if (exception == nullptr || exception->ExceptionRecord == nullptr ||
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exception->ExceptionRecord->ExceptionCode != EXCEPTION_ACCESS_VIOLATION) {
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return EXCEPTION_CONTINUE_SEARCH;
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}
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const auto operation = exception->ExceptionRecord->ExceptionInformation[0];
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const auto access = operation == 0 ? PageFaultAccess::Read
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: operation == 1 ? PageFaultAccess::Write
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: operation == 8 ? PageFaultAccess::Execute
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: PageFaultAccess::Unknown;
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auto *manager = g_native_fault_manager.load(std::memory_order_acquire);
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if (manager == nullptr) {
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return EXCEPTION_CONTINUE_SEARCH;
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}
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if (g_delay_native_fault.load(std::memory_order_acquire)) {
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g_native_fault_entered.store(true, std::memory_order_release);
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while (!g_release_native_fault.load(std::memory_order_acquire)) {
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std::this_thread::yield();
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}
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}
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return manager->HandleFault(
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access, exception->ExceptionRecord->ExceptionInformation[1])
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? EXCEPTION_CONTINUE_EXECUTION
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: EXCEPTION_CONTINUE_SEARCH;
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}
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bool InvalidateFault(void *context, Libs::Graphics::PageFaultAccess, uint64_t vaddr, uint64_t size,
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Libs::Graphics::PageFaultPhase phase) noexcept {
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auto *fault = static_cast<FaultContext *>(context);
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Check(fault != nullptr && fault->manager != nullptr, "invalid fault context");
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if (phase != Libs::Graphics::PageFaultPhase::Invalidate) {
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return true;
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}
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fault->calls.fetch_add(1, std::memory_order_relaxed);
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if (fault->reenter) {
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const auto address =
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fault->reenter_address != 0 ? fault->reenter_address : vaddr;
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(void)fault->manager->HandleFault(PageFaultAccess::Write, address);
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}
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if (fault->block) {
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fault->entered.store(true, std::memory_order_release);
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while (!fault->release.load(std::memory_order_acquire)) {
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std::this_thread::yield();
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}
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}
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(void)size;
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return fault->result;
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}
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uint8_t *Allocate(uint64_t size, uint32_t protection = PAGE_READWRITE) {
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constexpr uintptr_t test_address = 0x0000000200010000ull;
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auto *memory = static_cast<uint8_t *>(
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VirtualAlloc(reinterpret_cast<void *>(test_address), size,
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MEM_RESERVE | MEM_COMMIT, protection));
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Check(memory == reinterpret_cast<void *>(test_address),
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"fixed low VirtualAlloc failed");
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return memory;
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}
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void TestWatchFaultAndUnwatch() {
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FaultContext context;
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PageManager manager(InvalidateFault, &context);
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context.manager = &manager;
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const auto page_size = manager.GetPageSize();
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auto *memory = Allocate(page_size * 2);
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manager.OnGpuMap(reinterpret_cast<uint64_t>(memory), page_size * 2);
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manager.UpdatePageWatchers(true, reinterpret_cast<uint64_t>(memory),
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page_size);
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Check(manager.IsTracked(reinterpret_cast<uint64_t>(memory)) &&
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!IsWritable(memory),
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"watch did not protect the page");
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Check(manager.HandleFault(PageFaultAccess::Write,
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reinterpret_cast<uint64_t>(memory + 32)),
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"tracked write fault was not handled");
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Check(!manager.IsTracked(reinterpret_cast<uint64_t>(memory)) &&
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IsWritable(memory),
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"fault invalidation did not remove the watcher");
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Check(manager.HandleFault(PageFaultAccess::Write,
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reinterpret_cast<uint64_t>(memory)),
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"single delayed write fault was not coalesced");
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Check(manager.HandleFault(PageFaultAccess::Write,
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reinterpret_cast<uint64_t>(memory)),
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"second delayed write fault was not coalesced");
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manager.OnGpuUnmap(reinterpret_cast<uint64_t>(memory), page_size * 2);
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Check(VirtualFree(memory, 0, MEM_RELEASE) != 0, "VirtualFree failed");
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}
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void TestSharedWatcherFault() {
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FaultContext context;
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PageManager manager(InvalidateFault, &context);
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context.manager = &manager;
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const auto page_size = manager.GetPageSize();
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auto *memory = Allocate(page_size);
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const auto address = reinterpret_cast<uint64_t>(memory);
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manager.OnGpuMap(address, page_size);
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manager.UpdatePageWatchers(true, address + 8, 32);
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manager.UpdatePageWatchers(true, address + 128, 64);
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Check(manager.HandleFault(PageFaultAccess::Write, address + 16),
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"shared-watcher fault was not handled");
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Check(!manager.IsTracked(address) && IsWritable(memory),
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"fault callback did not clear every shared watcher");
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manager.OnGpuUnmap(address, page_size);
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Check(VirtualFree(memory, 0, MEM_RELEASE) != 0, "VirtualFree failed");
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}
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void TestReadWriteWatcherFault() {
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FaultContext context;
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PageManager manager(InvalidateFault, &context);
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context.manager = &manager;
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const auto page_size = manager.GetPageSize();
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auto *memory = Allocate(page_size);
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const auto address = reinterpret_cast<uint64_t>(memory);
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manager.OnGpuMap(address, page_size);
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manager.UpdatePageWatchers(true, address, page_size,
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Libs::Graphics::PageWatchMode::Write);
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manager.UpdatePageWatchers(true, address, page_size,
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Libs::Graphics::PageWatchMode::ReadWrite);
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manager.UpdatePageWatchers(false, address, page_size,
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Libs::Graphics::PageWatchMode::Write);
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Check(Protection(memory) == PAGE_NOACCESS,
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"read/write watcher did not install no-access protection");
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Check(manager.HandleFault(PageFaultAccess::Read, address + 8),
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"tracked read fault was not handled");
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Check(Protection(memory) == PAGE_READWRITE && !manager.IsTracked(address),
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"read fault did not release every watcher");
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manager.OnGpuUnmap(address, page_size);
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Check(VirtualFree(memory, 0, MEM_RELEASE) != 0, "VirtualFree failed");
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}
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void TestPermittedMappedLateFaultsResume() {
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FaultContext context;
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PageManager manager(InvalidateFault, &context);
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context.manager = &manager;
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const auto page_size = manager.GetPageSize();
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auto *memory = Allocate(page_size);
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const auto address = reinterpret_cast<uint64_t>(memory);
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manager.OnGpuMap(address, page_size);
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manager.UpdatePageWatchers(true, address, page_size);
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manager.UpdatePageWatchers(false, address, page_size);
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Check(manager.HandleFault(PageFaultAccess::Write, address),
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"first delayed mapped write was not accepted");
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Check(manager.HandleFault(PageFaultAccess::Write, address),
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"second delayed mapped write was not accepted");
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Check(manager.HandleFault(PageFaultAccess::Read, address),
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"delayed mapped read was not accepted on readable backing");
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DWORD old_protection = 0;
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Check(VirtualProtect(memory, page_size, PAGE_READONLY, &old_protection) != 0 &&
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old_protection == PAGE_READWRITE,
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"failed to prepare intentional read-only protection");
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Check(!manager.HandleFault(PageFaultAccess::Write, address),
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"intentional read-only mapping accepted a write fault");
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Check(VirtualProtect(memory, page_size, PAGE_READWRITE, &old_protection) != 0,
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"failed to restore writable protection");
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manager.OnGpuUnmap(address, page_size);
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Check(VirtualFree(memory, 0, MEM_RELEASE) != 0, "VirtualFree failed");
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}
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void TestPartialMappingUnmapPreservesTokens() {
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FaultContext context;
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PageManager manager(InvalidateFault, &context);
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context.manager = &manager;
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const auto page_size = manager.GetPageSize();
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auto *memory = Allocate(page_size);
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const auto address = reinterpret_cast<uint64_t>(memory);
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manager.OnGpuMap(address, page_size);
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manager.OnGpuMap(address + 8, 16);
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manager.UpdatePageWatchers(true, address, page_size,
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Libs::Graphics::PageWatchMode::ReadWrite);
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manager.UpdatePageWatchers(false, address, page_size,
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Libs::Graphics::PageWatchMode::ReadWrite);
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manager.OnGpuUnmap(address + 8, 16);
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Check(manager.HandleFault(PageFaultAccess::Read, address),
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"partial mapping unmap erased delayed read ownership");
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Check(manager.HandleFault(PageFaultAccess::Write, address),
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"partial mapping unmap erased delayed write ownership");
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manager.OnGpuUnmap(address, page_size);
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Check(VirtualFree(memory, 0, MEM_RELEASE) != 0, "VirtualFree failed");
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}
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void TestNativeDelayedReadAfterModeDowngrade() {
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FaultContext context;
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PageManager manager(InvalidateFault, &context);
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context.manager = &manager;
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const auto page_size = manager.GetPageSize();
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auto *memory = Allocate(page_size);
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memory[0] = 0x6d;
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const auto address = reinterpret_cast<uint64_t>(memory);
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manager.OnGpuMap(address, page_size);
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manager.UpdatePageWatchers(true, address, page_size);
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manager.UpdatePageWatchers(true, address, page_size,
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Libs::Graphics::PageWatchMode::ReadWrite);
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manager.UpdatePageWatchers(false, address, page_size);
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Check(Protection(memory) == PAGE_NOACCESS,
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"read/write ownership did not install no-access protection");
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void *handler = AddVectoredExceptionHandler(1, NativeFaultHandler);
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Check(handler != nullptr, "AddVectoredExceptionHandler failed");
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Check(g_native_fault_manager.exchange(&manager, std::memory_order_acq_rel) ==
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nullptr,
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"native fault manager already installed");
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g_native_fault_entered.store(false, std::memory_order_release);
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g_release_native_fault.store(false, std::memory_order_release);
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g_delay_native_fault.store(true, std::memory_order_release);
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uint8_t value = 0;
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std::thread reader(
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[&] { value = *static_cast<volatile uint8_t *>(memory); });
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while (!g_native_fault_entered.load(std::memory_order_acquire)) {
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std::this_thread::yield();
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}
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manager.UpdatePageWatchers(true, address, page_size);
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manager.UpdatePageWatchers(false, address, page_size,
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Libs::Graphics::PageWatchMode::ReadWrite);
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Check(Protection(memory) == PAGE_READONLY,
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"mode downgrade did not restore readable protection");
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manager.UpdatePageWatchers(true, address, page_size);
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context.block = true;
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bool write_handled = false;
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std::thread writer([&] {
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write_handled = manager.HandleFault(PageFaultAccess::Write, address);
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});
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while (!context.entered.load(std::memory_order_acquire)) {
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std::this_thread::yield();
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}
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g_release_native_fault.store(true, std::memory_order_release);
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reader.join();
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context.release.store(true, std::memory_order_release);
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writer.join();
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g_delay_native_fault.store(false, std::memory_order_release);
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Check(g_native_fault_manager.exchange(nullptr, std::memory_order_acq_rel) ==
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&manager,
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"native fault manager publication changed");
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Check(RemoveVectoredExceptionHandler(handler) != 0,
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"RemoveVectoredExceptionHandler failed");
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Check(value == 0x6d && write_handled &&
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context.calls.load(std::memory_order_relaxed) == 1,
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"delayed read was not coalesced across write ownership/resolution");
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manager.OnGpuUnmap(address, page_size);
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Check(VirtualFree(memory, 0, MEM_RELEASE) != 0, "VirtualFree failed");
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}
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void TestDelayedFaultAfterExplicitUnwatch() {
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FaultContext context;
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PageManager manager(InvalidateFault, &context);
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context.manager = &manager;
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const auto page_size = manager.GetPageSize();
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auto *memory = Allocate(page_size);
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const auto address = reinterpret_cast<uint64_t>(memory);
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manager.OnGpuMap(address, page_size);
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manager.UpdatePageWatchers(true, address, page_size);
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// Models a store that already raised an AV before another thread published
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// explicit CPU dirtiness and removed the watcher.
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manager.UpdatePageWatchers(false, address, page_size);
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Check(manager.HandleFault(PageFaultAccess::Write, address),
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"delayed watched write was not accepted after explicit unwatch");
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Check(manager.HandleFault(PageFaultAccess::Write, address) &&
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context.calls.load(std::memory_order_relaxed) == 0,
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"second explicit-unwatch fault was not coalesced or dispatched invalidation");
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manager.OnGpuUnmap(address, page_size);
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Check(VirtualFree(memory, 0, MEM_RELEASE) != 0, "VirtualFree failed");
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}
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void TestNativeAccessViolation() {
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FaultContext context;
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PageManager manager(InvalidateFault, &context);
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context.manager = &manager;
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const auto page_size = manager.GetPageSize();
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auto *memory = Allocate(page_size);
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const auto address = reinterpret_cast<uint64_t>(memory);
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manager.OnGpuMap(address, page_size);
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manager.UpdatePageWatchers(true, address, page_size);
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void *handler = AddVectoredExceptionHandler(1, NativeFaultHandler);
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Check(handler != nullptr, "AddVectoredExceptionHandler failed");
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Check(g_native_fault_manager.exchange(&manager, std::memory_order_acq_rel) ==
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nullptr,
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"native fault manager already installed");
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*static_cast<volatile uint8_t *>(memory) = 0x5a;
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Check(g_native_fault_manager.exchange(nullptr, std::memory_order_acq_rel) ==
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&manager,
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"native fault manager publication changed");
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Check(RemoveVectoredExceptionHandler(handler) != 0,
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"RemoveVectoredExceptionHandler failed");
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Check(memory[0] == 0x5a && !manager.IsTracked(address) &&
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context.calls.load(std::memory_order_relaxed) == 1,
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"native access violation did not invalidate and resume the store");
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manager.OnGpuUnmap(address, page_size);
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Check(VirtualFree(memory, 0, MEM_RELEASE) != 0, "VirtualFree failed");
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}
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void TestInvalidLateWriteTokenIsConsumed() {
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FaultContext context;
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PageManager manager(InvalidateFault, &context);
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context.manager = &manager;
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const auto page_size = manager.GetPageSize();
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auto *memory = Allocate(page_size);
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const auto address = reinterpret_cast<uint64_t>(memory);
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manager.OnGpuMap(address, page_size);
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manager.UpdatePageWatchers(true, address, page_size);
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Check(manager.HandleFault(PageFaultAccess::Write, address),
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"initial write fault was not handled");
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DWORD old_protection = 0;
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Check(VirtualProtect(memory, page_size, PAGE_READONLY, &old_protection) !=
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0 &&
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old_protection == PAGE_READWRITE,
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"failed to create invalid late-write protection state");
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Check(!manager.HandleFault(PageFaultAccess::Write, address) &&
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!manager.HandleFault(PageFaultAccess::Write, address),
|
||||
"invalid late-write token was accepted or retained");
|
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Check(VirtualProtect(memory, page_size, PAGE_READWRITE, &old_protection) != 0,
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||||
"failed to restore test protection");
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manager.OnGpuUnmap(address, page_size);
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Check(VirtualFree(memory, 0, MEM_RELEASE) != 0, "VirtualFree failed");
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}
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||||
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void TestCrossRegionRange() {
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FaultContext context;
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PageManager manager(InvalidateFault, &context);
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context.manager = &manager;
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const auto page_size = manager.GetPageSize();
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constexpr uint64_t region_size = 4ull * 1024ull * 1024ull;
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auto *memory = Allocate(region_size * 2);
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const auto base = reinterpret_cast<uint64_t>(memory);
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const auto boundary = (base + region_size - 1) & ~(region_size - 1);
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Check(boundary >= base + page_size &&
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boundary + page_size <= base + region_size * 2,
|
||||
"test allocation does not contain a region boundary");
|
||||
|
||||
manager.OnGpuMap(base, region_size * 2);
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manager.UpdatePageWatchers(true, boundary - page_size, page_size * 2);
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||||
Check(!IsWritable(reinterpret_cast<void *>(boundary - page_size)) &&
|
||||
!IsWritable(reinterpret_cast<void *>(boundary)),
|
||||
"cross-region watch did not protect both pages");
|
||||
manager.UpdatePageWatchers(false, boundary - page_size, page_size * 2);
|
||||
Check(IsWritable(reinterpret_cast<void *>(boundary - page_size)) &&
|
||||
IsWritable(reinterpret_cast<void *>(boundary)),
|
||||
"cross-region unwatch did not restore both pages");
|
||||
manager.OnGpuUnmap(base, region_size * 2);
|
||||
Check(VirtualFree(memory, 0, MEM_RELEASE) != 0, "VirtualFree failed");
|
||||
}
|
||||
|
||||
[[noreturn]] void RunDeathCase(const char *name) {
|
||||
FaultContext context;
|
||||
auto manager = std::make_unique<PageManager>(InvalidateFault, &context);
|
||||
context.manager = manager.get();
|
||||
const auto page_size = manager->GetPageSize();
|
||||
if (std::strcmp(name, "invalid-range") == 0) {
|
||||
manager->UpdatePageWatchers(true, (1ull << 40u) - 1, 2);
|
||||
} else if (std::strcmp(name, "unknown-untrack") == 0) {
|
||||
manager->UpdatePageWatchers(false, 0x1000, page_size);
|
||||
} else {
|
||||
const bool two_pages = std::strcmp(name, "cross-reentrant") == 0;
|
||||
auto *memory = Allocate(
|
||||
two_pages ? page_size * 2 : page_size,
|
||||
std::strcmp(name, "protection") == 0 ? PAGE_READONLY : PAGE_READWRITE);
|
||||
const auto address = reinterpret_cast<uint64_t>(memory);
|
||||
manager->OnGpuMap(address, two_pages ? page_size * 2 : page_size);
|
||||
manager->UpdatePageWatchers(true, address, page_size);
|
||||
if (two_pages) {
|
||||
manager->UpdatePageWatchers(true, address + page_size, page_size);
|
||||
}
|
||||
if (std::strcmp(name, "destructor-watch") == 0) {
|
||||
manager.reset();
|
||||
} else if (std::strcmp(name, "non-write") == 0) {
|
||||
(void)manager->HandleFault(PageFaultAccess::Read, address);
|
||||
} else if (std::strcmp(name, "callback-false") == 0) {
|
||||
context.result = false;
|
||||
(void)manager->HandleFault(PageFaultAccess::Write, address);
|
||||
} else if (std::strcmp(name, "reentrant") == 0) {
|
||||
context.reenter = true;
|
||||
(void)manager->HandleFault(PageFaultAccess::Write, address);
|
||||
} else if (std::strcmp(name, "cross-reentrant") == 0) {
|
||||
context.reenter = true;
|
||||
context.reenter_address = address + page_size;
|
||||
(void)manager->HandleFault(PageFaultAccess::Write, address);
|
||||
} else if (std::strcmp(name, "concurrent-non-write") == 0) {
|
||||
context.block = true;
|
||||
std::thread first(
|
||||
[&] { (void)manager->HandleFault(PageFaultAccess::Write, address); });
|
||||
while (!context.entered.load(std::memory_order_acquire)) {
|
||||
std::this_thread::yield();
|
||||
}
|
||||
(void)manager->HandleFault(PageFaultAccess::Read, address);
|
||||
first.join();
|
||||
} else if (std::strcmp(name, "watched-unmap") == 0) {
|
||||
manager->OnGpuUnmap(address, page_size);
|
||||
} else if (std::strcmp(name, "protection") != 0) {
|
||||
std::_Exit(0x7f);
|
||||
}
|
||||
}
|
||||
std::_Exit(0x7f);
|
||||
}
|
||||
|
||||
void CheckDeathCase(const char *name) {
|
||||
char path[MAX_PATH]{};
|
||||
Check(GetModuleFileNameA(nullptr, path, MAX_PATH) != 0,
|
||||
"GetModuleFileName failed");
|
||||
std::string command = std::string("\"") + path + "\" --death " + name;
|
||||
std::vector<char> mutable_command(command.begin(), command.end());
|
||||
mutable_command.push_back('\0');
|
||||
STARTUPINFOA startup{sizeof(startup)};
|
||||
PROCESS_INFORMATION process{};
|
||||
Check(CreateProcessA(nullptr, mutable_command.data(), nullptr, nullptr, FALSE,
|
||||
CREATE_NO_WINDOW, nullptr, nullptr, &startup,
|
||||
&process) != 0,
|
||||
"CreateProcess failed");
|
||||
Check(WaitForSingleObject(process.hProcess, 10000) == WAIT_OBJECT_0,
|
||||
"death test timed out");
|
||||
DWORD exit_code = 0;
|
||||
Check(
|
||||
GetExitCodeProcess(process.hProcess, &exit_code) != 0 &&
|
||||
(exit_code == 322 || exit_code == EXCEPTION_NONCONTINUABLE_EXCEPTION),
|
||||
"death case did not use the PageManager fatal exit");
|
||||
CloseHandle(process.hThread);
|
||||
CloseHandle(process.hProcess);
|
||||
}
|
||||
|
||||
void TestFatalPaths() {
|
||||
for (const char *name :
|
||||
{"invalid-range", "unknown-untrack", "destructor-watch", "non-write",
|
||||
"callback-false", "reentrant", "cross-reentrant",
|
||||
"concurrent-non-write", "watched-unmap", "protection"}) {
|
||||
CheckDeathCase(name);
|
||||
}
|
||||
}
|
||||
|
||||
void TestConcurrentFault() {
|
||||
FaultContext context;
|
||||
PageManager manager(InvalidateFault, &context);
|
||||
context.manager = &manager;
|
||||
context.block = true;
|
||||
const auto page_size = manager.GetPageSize();
|
||||
auto *memory = Allocate(page_size);
|
||||
const auto address = reinterpret_cast<uint64_t>(memory);
|
||||
manager.OnGpuMap(address, page_size);
|
||||
manager.UpdatePageWatchers(true, address, page_size);
|
||||
bool first_result = false;
|
||||
bool second_result = false;
|
||||
std::thread first([&] {
|
||||
first_result = manager.HandleFault(PageFaultAccess::Write, address);
|
||||
});
|
||||
while (!context.entered.load(std::memory_order_acquire)) {
|
||||
std::this_thread::yield();
|
||||
}
|
||||
std::thread second([&] {
|
||||
second_result = manager.HandleFault(PageFaultAccess::Write, address);
|
||||
});
|
||||
context.release.store(true, std::memory_order_release);
|
||||
first.join();
|
||||
second.join();
|
||||
Check(first_result && second_result &&
|
||||
context.calls.load(std::memory_order_relaxed) == 1,
|
||||
"concurrent faults dispatched invalidation more than once");
|
||||
manager.OnGpuUnmap(address, page_size);
|
||||
Check(VirtualFree(memory, 0, MEM_RELEASE) != 0, "VirtualFree failed");
|
||||
}
|
||||
|
||||
void TestExternalDirtyTransferDuringResolution() {
|
||||
FaultContext context;
|
||||
PageManager manager(InvalidateFault, &context);
|
||||
context.manager = &manager;
|
||||
context.block = true;
|
||||
const auto page_size = manager.GetPageSize();
|
||||
auto *memory = Allocate(page_size);
|
||||
const auto address = reinterpret_cast<uint64_t>(memory);
|
||||
manager.OnGpuMap(address, page_size);
|
||||
manager.UpdatePageWatchers(true, address, page_size);
|
||||
bool handled = false;
|
||||
std::thread fault(
|
||||
[&] { handled = manager.HandleFault(PageFaultAccess::Write, address); });
|
||||
while (!context.entered.load(std::memory_order_acquire)) {
|
||||
std::this_thread::yield();
|
||||
}
|
||||
manager.UpdatePageWatchers(false, address, page_size);
|
||||
context.release.store(true, std::memory_order_release);
|
||||
fault.join();
|
||||
Check(handled && !manager.IsTracked(address) && IsWritable(memory),
|
||||
"external dirty transfer did not satisfy active resolution");
|
||||
manager.OnGpuUnmap(address, page_size);
|
||||
Check(VirtualFree(memory, 0, MEM_RELEASE) != 0, "VirtualFree failed");
|
||||
}
|
||||
|
||||
void TestMappingDoesNotRequireCpuWriteAccess() {
|
||||
FaultContext context;
|
||||
PageManager manager(InvalidateFault, &context);
|
||||
context.manager = &manager;
|
||||
const auto page_size = manager.GetPageSize();
|
||||
auto *memory = Allocate(page_size);
|
||||
DWORD old_protection = 0;
|
||||
Check(VirtualProtect(memory, page_size, PAGE_NOACCESS, &old_protection) != 0 &&
|
||||
old_protection == PAGE_READWRITE,
|
||||
"failed to prepare CPU-inaccessible mapping");
|
||||
const auto address = reinterpret_cast<uint64_t>(memory);
|
||||
manager.OnGpuMap(address, page_size);
|
||||
Check(manager.IsMapped(address, page_size),
|
||||
"CPU-inaccessible committed range was not GPU mapped");
|
||||
manager.OnGpuUnmap(address, page_size);
|
||||
Check(VirtualFree(memory, 0, MEM_RELEASE) != 0, "VirtualFree failed");
|
||||
}
|
||||
|
||||
void TestGpuAccessPermissions() {
|
||||
FaultContext context;
|
||||
PageManager manager(InvalidateFault, &context);
|
||||
context.manager = &manager;
|
||||
const auto page_size = manager.GetPageSize();
|
||||
auto *memory = Allocate(page_size);
|
||||
const auto address = reinterpret_cast<uint64_t>(memory);
|
||||
manager.OnGpuMap(address, page_size, GpuAccess::Read);
|
||||
Check(manager.HasGpuAccess(address, page_size, GpuAccess::Read) &&
|
||||
!manager.HasGpuAccess(address, page_size, GpuAccess::Write),
|
||||
"read-only GPU mapping granted write access");
|
||||
manager.OnGpuMap(address, page_size, GpuAccess::Write);
|
||||
Check(manager.HasGpuAccess(address, page_size, GpuAccess::ReadWrite),
|
||||
"overlapping GPU mappings did not combine permissions");
|
||||
manager.OnGpuUnmap(address, page_size, GpuAccess::Read);
|
||||
Check(!manager.HasGpuAccess(address, page_size, GpuAccess::Read) &&
|
||||
manager.HasGpuAccess(address, page_size, GpuAccess::Write),
|
||||
"GPU read unmap removed the wrong permission");
|
||||
manager.OnGpuUnmap(address, page_size, GpuAccess::Write);
|
||||
Check(!manager.IsMapped(address, page_size),
|
||||
"GPU permission mappings were not fully balanced");
|
||||
Check(VirtualFree(memory, 0, MEM_RELEASE) != 0, "VirtualFree failed");
|
||||
}
|
||||
#endif
|
||||
|
||||
} // namespace
|
||||
|
||||
int main(int argc, char **argv) {
|
||||
#if KYTY_PLATFORM == KYTY_PLATFORM_WINDOWS
|
||||
if (argc == 3 && std::strcmp(argv[1], "--death") == 0) {
|
||||
RunDeathCase(argv[2]);
|
||||
}
|
||||
TestWatchFaultAndUnwatch();
|
||||
TestSharedWatcherFault();
|
||||
TestReadWriteWatcherFault();
|
||||
TestPermittedMappedLateFaultsResume();
|
||||
TestPartialMappingUnmapPreservesTokens();
|
||||
TestNativeDelayedReadAfterModeDowngrade();
|
||||
TestDelayedFaultAfterExplicitUnwatch();
|
||||
TestNativeAccessViolation();
|
||||
TestInvalidLateWriteTokenIsConsumed();
|
||||
TestCrossRegionRange();
|
||||
TestConcurrentFault();
|
||||
TestExternalDirtyTransferDuringResolution();
|
||||
TestMappingDoesNotRequireCpuWriteAccess();
|
||||
TestGpuAccessPermissions();
|
||||
TestFatalPaths();
|
||||
std::puts("PageManagerTests: all cases passed");
|
||||
return 0;
|
||||
#else
|
||||
(void)argc;
|
||||
(void)argv;
|
||||
std::fputs("PageManagerTests: unsupported platform\n", stderr);
|
||||
return 1;
|
||||
#endif
|
||||
}
|
||||
Reference in New Issue
Block a user