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dmnt: prevent lag on game thread-spawning

This commit is contained in:
Michael Scire 2019-03-05 18:57:50 -08:00
parent a3d44e37b5
commit 512dbc3a24
3 changed files with 70 additions and 13 deletions

View file

@ -22,7 +22,7 @@
#include "pm_shim.h"
static HosMutex g_cheat_lock;
static HosThread g_detect_thread, g_vm_thread;
static HosThread g_detect_thread, g_vm_thread, g_debug_events_thread;
static IEvent *g_cheat_process_event;
static DmntCheatVm *g_cheat_vm;
@ -30,6 +30,12 @@ static DmntCheatVm *g_cheat_vm;
static CheatProcessMetadata g_cheat_process_metadata = {0};
static Handle g_cheat_process_debug_hnd = 0;
/* For signalling the debug events thread. */
static HosSignal g_has_cheat_process_signal;
/* To save some copying. */
static bool g_needs_reload_vm_program = false;
/* Global cheat entry storage. */
static CheatEntry g_cheat_entries[DmntCheatManager::MaxCheatCount];
@ -38,6 +44,9 @@ static std::map<u64, FrozenAddressValue> g_frozen_addresses_map;
void DmntCheatManager::CloseActiveCheatProcess() {
if (g_cheat_process_debug_hnd != 0) {
/* We're no longer in possession of a debug process. */
g_has_cheat_process_signal.Reset();
/* Close process resources. */
svcCloseHandle(g_cheat_process_debug_hnd);
g_cheat_process_debug_hnd = 0;
@ -62,10 +71,6 @@ bool DmntCheatManager::HasActiveCheatProcess() {
has_cheat_process &= R_SUCCEEDED(svcGetProcessId(&tmp, g_cheat_process_debug_hnd));
}
if (has_cheat_process) {
has_cheat_process &= R_SUCCEEDED(pmdmntGetApplicationPid(&tmp));
}
if (has_cheat_process) {
has_cheat_process &= tmp == g_cheat_process_metadata.process_id;
}
@ -222,6 +227,9 @@ void DmntCheatManager::ResetCheatEntry(size_t i) {
g_cheat_entries[i].enabled = false;
g_cheat_entries[i].cheat_id = i;
g_cheat_entries[i].definition = {0};
/* Trigger a VM reload. */
g_needs_reload_vm_program = true;
}
}
@ -253,6 +261,9 @@ CheatEntry *DmntCheatManager::GetCheatEntryById(size_t i) {
bool DmntCheatManager::ParseCheats(const char *s, size_t len) {
size_t i = 0;
CheatEntry *cur_entry = NULL;
/* Trigger a VM reload. */
g_needs_reload_vm_program = true;
while (i < len) {
if (isspace(s[i])) {
@ -458,6 +469,9 @@ Result DmntCheatManager::ToggleCheat(u32 cheat_id) {
}
entry->enabled = !entry->enabled;
/* Trigger a VM reload. */
g_needs_reload_vm_program = true;
return 0;
}
@ -479,6 +493,9 @@ Result DmntCheatManager::AddCheat(u32 *out_id, CheatDefinition *def, bool enable
new_entry->enabled = enabled;
new_entry->definition = *def;
/* Trigger a VM reload. */
g_needs_reload_vm_program = true;
return 0;
}
@ -494,6 +511,9 @@ Result DmntCheatManager::RemoveCheat(u32 cheat_id) {
}
ResetCheatEntry(cheat_id);
/* Trigger a VM reload. */
g_needs_reload_vm_program = true;
return 0;
}
@ -696,6 +716,9 @@ Result DmntCheatManager::ForceOpenCheatProcess() {
/* Continue debug events, etc. */
ContinueCheatProcess();
/* Signal to debug event swallower. */
g_has_cheat_process_signal.Signal();
/* Signal to our fans. */
g_cheat_process_event->Signal();
@ -782,6 +805,9 @@ void DmntCheatManager::OnNewApplicationLaunch() {
/* Continue debug events, etc. */
ContinueCheatProcess();
/* Signal to debug event swallower. */
g_has_cheat_process_signal.Signal();
/* Signal to our fans. */
g_cheat_process_event->Signal();
}
@ -810,11 +836,12 @@ void DmntCheatManager::VmThread(void *arg) {
std::scoped_lock<HosMutex> lk(g_cheat_lock);
if (HasActiveCheatProcess()) {
/* Handle any pending debug events. */
ContinueCheatProcess();
/* Execute VM. */
if (g_cheat_vm->LoadProgram(g_cheat_entries, DmntCheatManager::MaxCheatCount)) {
if (!g_needs_reload_vm_program || (g_cheat_vm->LoadProgram(g_cheat_entries, DmntCheatManager::MaxCheatCount))) {
/* Program: reloaded. */
g_needs_reload_vm_program = false;
/* Execute program if it's present. */
if (g_cheat_vm->GetProgramSize() != 0) {
g_cheat_vm->Execute(&g_cheat_process_metadata);
}
@ -826,7 +853,30 @@ void DmntCheatManager::VmThread(void *arg) {
}
}
}
svcSleepThread(0x5000000ul);
constexpr u64 ONE_SECOND = 1000000000ul;
constexpr u64 NUM_TIMES = 12;
constexpr u64 DELAY = ONE_SECOND / NUM_TIMES;
svcSleepThread(DELAY);
}
}
void DmntCheatManager::DebugEventsThread(void *arg) {
while (true) {
/* Wait to have a cheat process. */
g_has_cheat_process_signal.Wait();
while (g_cheat_process_debug_hnd != 0 && R_SUCCEEDED(svcWaitSynchronizationSingle(g_cheat_process_debug_hnd, U64_MAX))) {
{
std::scoped_lock<HosMutex> lk(g_cheat_lock);
/* Handle any pending debug events. */
if (HasActiveCheatProcess()) {
ContinueCheatProcess();
}
}
svcSleepThread(1000000ull);
}
}
}
@ -859,15 +909,20 @@ void DmntCheatManager::InitializeCheatManager() {
g_cheat_vm = new DmntCheatVm();
/* Spawn application detection thread, spawn cheat vm thread. */
if (R_FAILED(g_detect_thread.Initialize(&DmntCheatManager::DetectThread, nullptr, 0x4000, 28))) {
if (R_FAILED(g_detect_thread.Initialize(&DmntCheatManager::DetectThread, nullptr, 0x4000, 39))) {
std::abort();
}
if (R_FAILED(g_vm_thread.Initialize(&DmntCheatManager::VmThread, nullptr, 0x4000, 28))) {
if (R_FAILED(g_vm_thread.Initialize(&DmntCheatManager::VmThread, nullptr, 0x4000, 48))) {
std::abort();
}
if (R_FAILED(g_debug_events_thread.Initialize(&DmntCheatManager::DebugEventsThread, nullptr, 0x4000, 48))) {
std::abort();
}
/* Start threads. */
if (R_FAILED(g_detect_thread.Start()) || R_FAILED(g_vm_thread.Start())) {
if (R_FAILED(g_detect_thread.Start()) || R_FAILED(g_vm_thread.Start()) || R_FAILED(g_debug_events_thread.Start())) {
std::abort();
}
}

View file

@ -29,6 +29,7 @@ class DmntCheatManager {
static void OnNewApplicationLaunch();
static void DetectThread(void *arg);
static void VmThread(void *arg);
static void DebugEventsThread(void *arg);
static bool HasActiveCheatProcess();
static void CloseActiveCheatProcess();

View file

@ -441,6 +441,7 @@ bool DmntCheatVm::LoadProgram(const CheatEntry *cheats, size_t num_cheats) {
if (cheats[i].enabled) {
/* Bounds check. */
if (cheats[i].definition.num_opcodes + this->num_opcodes > MaximumProgramOpcodeCount) {
this->num_opcodes = 0;
return false;
}