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Fix issues with not being able to run ROMs concurrently

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This commit fixes GroupMutex and by extension issues with trying to run ROMs without quitting the application in between.
This commit is contained in:
◱ PixelyIon 2020-02-06 00:07:45 +05:30 committed by ◱ PixelyIon
parent 694c8ef4e2
commit 003e9c5a01
10 changed files with 49 additions and 33 deletions
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16
app/src/main/cpp/skyline/common.cpp
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@ -18,20 +18,18 @@ namespace skyline {
void GroupMutex::lock(Group group) {
auto none = Group::None;
if (flag == group) {
num++;
return;
}
while (true) {
for (int i = 0; i < 1000; ++i) {
if (flag.compare_exchange_weak(none, group)) {
constexpr u64 timeout = 1000; // The timeout in ns
auto start = utils::GetTimeNs();
while (next != group && !next.compare_exchange_weak(none, group)) {
if (flag == group && ((utils::GetTimeNs() - start) > timeout)) {
num++;
return;
}
asm volatile("yield");
}
sched_yield();
}
while (flag != group && !flag.compare_exchange_weak(none, group))
asm volatile("yield");
num++;
}
void GroupMutex::unlock() {

18
app/src/main/cpp/skyline/common.h
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@ -100,12 +100,19 @@ namespace skyline {
* @brief Returns the current time in nanoseconds
* @return The current time in nanoseconds
*/
inline u64 GetCurrTimeNs() {
return static_cast<u64>(std::chrono::duration_cast<std::chrono::nanoseconds>(std::chrono::high_resolution_clock::now().time_since_epoch()).count());
inline u64 GetTimeNs() {
static u64 frequencyMs{};
if (!frequencyMs) {
asm("MRS %0, CNTFRQ_EL0" : "=r"(frequencyMs));
frequencyMs *= 1000000000;
}
u64 ticks;
asm("MRS %0, CNTVCT_EL0" : "=r"(ticks));
return ticks / frequencyMs;
}
/**
* @brief Aligns up a value to a multiple of two
* @brief Aligns up a value to a multiple of twoB
* @tparam Type The type of the values
* @param value The value to round up
* @param multiple The multiple to round up to (Should be a multiple of 2)
@ -113,7 +120,7 @@ namespace skyline {
* @tparam TypeMul The type of the multiple
* @return The aligned value
*/
template <typename TypeVal, typename TypeMul>
template<typename TypeVal, typename TypeMul>
inline TypeVal AlignUp(TypeVal value, TypeMul multiple) {
static_assert(std::is_integral<TypeVal>() && std::is_integral<TypeMul>());
multiple--;
@ -128,7 +135,7 @@ namespace skyline {
* @tparam TypeMul The type of the multiple
* @return The aligned value
*/
template <typename TypeVal, typename TypeMul>
template<typename TypeVal, typename TypeMul>
inline TypeVal AlignDown(TypeVal value, TypeMul multiple) {
static_assert(std::is_integral<TypeVal>() && std::is_integral<TypeMul>());
multiple--;
@ -207,6 +214,7 @@ namespace skyline {
private:
std::atomic<Group> flag = Group::None; //!< An atomic flag to hold which group holds the mutex
std::atomic<Group> next = Group::None; //!< An atomic flag to hold which group will hold the mutex next
std::atomic<u8> num = 0; //!< An atomic u8 keeping track of how many users are holding the mutex
};

6
app/src/main/cpp/skyline/kernel/memory.cpp
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@ -87,7 +87,7 @@ namespace skyline::kernel {
}
void MemoryManager::InitializeRegions(u64 address, u64 size, const memory::AddressSpaceType type) {
switch(type) {
switch (type) {
case memory::AddressSpaceType::AddressSpace32Bit:
throw exception("32-bit address spaces are not supported");
case memory::AddressSpaceType::AddressSpace36Bit: {
@ -95,7 +95,7 @@ namespace skyline::kernel {
base.size = 0xFF8000000;
code.address = base.address;
code.size = 0x78000000;
if(code.address > address || (code.size - (address - code.address)) < size)
if (code.address > address || (code.size - (address - code.address)) < size)
throw exception("Code mapping larger than 36-bit code region");
alias.address = code.address + code.size;
alias.size = 0x180000000;
@ -139,7 +139,7 @@ namespace skyline::kernel {
}
memory::Region MemoryManager::GetRegion(memory::Regions region) {
switch(region) {
switch (region) {
case memory::Regions::Base:
return base;
case memory::Regions::Code:

4
app/src/main/cpp/skyline/kernel/memory.h
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@ -120,6 +120,7 @@ namespace skyline {
*/
union MemoryState {
constexpr MemoryState(const u32 value) : value(value) {};
constexpr MemoryState() : value(0) {};
struct {
@ -226,6 +227,7 @@ namespace skyline {
namespace svc {
void SetMemoryAttribute(DeviceState &state);
void MapMemory(DeviceState &state);
}
@ -324,7 +326,9 @@ namespace skyline {
friend class type::KTransferMemory;
friend class type::KProcess;
friend class loader::NroLoader;
friend void svc::SetMemoryAttribute(DeviceState &state);
friend void svc::MapMemory(skyline::DeviceState &state);
MemoryManager(const DeviceState &state);

4
app/src/main/cpp/skyline/kernel/svc.cpp
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@ -377,7 +377,7 @@ namespace skyline::kernel::svc {
}
auto timeout = state.ctx->registers.x3;
state.logger->Debug("svcWaitSynchronization: Waiting on handles:\n{}Timeout: 0x{:X} ns", handleStr, timeout);
auto start = utils::GetCurrTimeNs();
auto start = utils::GetTimeNs();
while (true) {
if (state.thread->cancelSync) {
state.thread->cancelSync = false;
@ -394,7 +394,7 @@ namespace skyline::kernel::svc {
}
index++;
}
if ((utils::GetCurrTimeNs() - start) >= timeout) {
if ((utils::GetTimeNs() - start) >= timeout) {
state.logger->Debug("svcWaitSynchronization: Wait has timed out");
state.ctx->registers.w0 = constant::status::Timeout;
return;

2
app/src/main/cpp/skyline/kernel/types/KPrivateMemory.cpp
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@ -124,7 +124,9 @@ namespace skyline::kernel::type {
} catch (const std::exception &) {
}
auto chunk = state.os->memory.GetChunk(address);
if (chunk) {
munmap(reinterpret_cast<void *>(chunk->host), chunk->size);
state.os->memory.DeleteChunk(address);
}
}
};

8
app/src/main/cpp/skyline/kernel/types/KProcess.cpp
View File

@ -211,7 +211,7 @@ namespace skyline::kernel::type {
auto status = (*mtxWaiters.begin());
status->flag = true;
lock.unlock();
while(status->flag);
while (status->flag);
lock.lock();
}
return true;
@ -230,9 +230,9 @@ namespace skyline::kernel::type {
}
lock.unlock();
bool timedOut{};
auto start = utils::GetCurrTimeNs();
auto start = utils::GetTimeNs();
while (!status->flag) {
if ((utils::GetCurrTimeNs() - start) >= timeout)
if ((utils::GetTimeNs() - start) >= timeout)
timedOut = true;
}
lock.lock();
@ -298,7 +298,7 @@ namespace skyline::kernel::type {
iter++;
count++;
condLock.unlock();
while(thread->flag);
while (thread->flag);
condLock.lock();
}
}

4
app/src/main/cpp/skyline/kernel/types/KProcess.h
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@ -186,8 +186,8 @@ namespace skyline::kernel::type {
* @note This can return a nullptr if the address is invalid
*/
template<typename Type>
inline Type* GetPointer(const u64 address) const {
return reinterpret_cast<Type*>(GetHostAddress(address));
inline Type *GetPointer(const u64 address) const {
return reinterpret_cast<Type *>(GetHostAddress(address));
}
/**

2
app/src/main/cpp/skyline/nce.cpp
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@ -93,6 +93,8 @@ namespace skyline {
}
void NCE::ExecuteFunction(ThreadCall call, Registers &funcRegs) {
if(state.process->status == kernel::type::KProcess::Status::Exiting)
throw exception("Executing function on Exiting process");
auto thread = state.thread ? state.thread : state.process->threads.at(state.process->pid);
ExecuteFunctionCtx(call, funcRegs, reinterpret_cast<ThreadContext *>(thread->ctxMemory->kernel.address));
}

2
app/src/main/cpp/skyline/nce/guest.cpp
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@ -278,8 +278,10 @@ namespace skyline::guest {
.sa_sigaction = reinterpret_cast<void (*)(int, struct siginfo *, void *)>(reinterpret_cast<void *>(signalHandler)),
.sa_flags = SA_SIGINFO,
};
/*
for (int signal : {SIGILL, SIGTRAP, SIGBUS, SIGFPE, SIGSEGV})
sigaction(signal, &sigact, nullptr);
*/
ctx->state = ThreadState::Running;
asm("MOV LR, %0\n\t"
"MOV X0, %1\n\t"