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mirror of https://github.com/RPCS3/rpcs3.git synced 2024-11-22 10:42:36 +01:00

Remove unused code

This commit is contained in:
Nekotekina 2017-02-13 18:31:35 +03:00
parent 8891d85f75
commit 436c245d13
2 changed files with 0 additions and 237 deletions

View File

@ -1678,8 +1678,6 @@ static void prepare_throw_access_violation(x64_context* context, const char* cau
RIP(context) = (u64)std::addressof(throw_access_violation); RIP(context) = (u64)std::addressof(throw_access_violation);
} }
static void _handle_interrupt(x64_context* ctx);
#ifdef _WIN32 #ifdef _WIN32
static LONG exception_handler(PEXCEPTION_POINTERS pExp) static LONG exception_handler(PEXCEPTION_POINTERS pExp)
@ -1819,11 +1817,6 @@ static void signal_handler(int sig, siginfo_t* info, void* uct)
{ {
x64_context* context = (ucontext_t*)uct; x64_context* context = (ucontext_t*)uct;
if (sig == SIGUSR1)
{
return _handle_interrupt(context);
}
#ifdef __APPLE__ #ifdef __APPLE__
const bool is_writing = context->uc_mcontext->__es.__err & 0x2; const bool is_writing = context->uc_mcontext->__es.__err & 0x2;
#else #else
@ -1865,14 +1858,6 @@ const bool s_exception_handler_set = []() -> bool
std::abort(); std::abort();
} }
sa.sa_sigaction = signal_handler;
if (::sigaction(SIGUSR1, &sa, NULL) == -1)
{
std::printf("sigaction(SIGUSR1) failed (0x%x).", errno);
std::abort();
}
return true; return true;
}(); }();
@ -1987,10 +1972,6 @@ void thread_ctrl::initialize()
void thread_ctrl::finalize(std::exception_ptr eptr) noexcept void thread_ctrl::finalize(std::exception_ptr eptr) noexcept
{ {
// Disable and discard possible interrupts
interrupt_disable();
test_interrupt();
// TODO // TODO
vm::reservation_free(); vm::reservation_free();
@ -2187,149 +2168,6 @@ void thread_ctrl::notify()
} }
} }
static thread_local x64_context s_tls_context{};
static void _handle_interrupt(x64_context* ctx)
{
// Copy context for further use (TODO: is it safe on all platforms?)
s_tls_context = *ctx;
thread_ctrl::handle_interrupt();
}
static thread_local void(*s_tls_handler)() = nullptr;
[[noreturn]] static void execute_interrupt_handler()
{
// Fix stack for throwing
if (s_tls_ret_pos) s_tls_ret_addr = std::exchange(*(u64*)s_tls_ret_pos, s_tls_ret_addr);
// Run either throwing or returning interrupt handler
s_tls_handler();
// Restore context in the case of return
const auto ctx = &s_tls_context;
if (s_tls_ret_pos)
{
RIP(ctx) = std::exchange(*(u64*)s_tls_ret_pos, s_tls_ret_addr);
RSP(ctx) += sizeof(u64);
}
else
{
RIP(ctx) = s_tls_ret_addr;
}
#ifdef _WIN32
RtlRestoreContext(ctx, nullptr);
#else
::setcontext(ctx);
#endif
}
void thread_ctrl::handle_interrupt()
{
const auto _this = g_tls_this_thread;
const auto ctx = &s_tls_context;
if (_this->m_guard & 0x80000000)
{
// Discard interrupt if interrupts are disabled
if (_this->m_iptr.exchange(nullptr))
{
_this->_notify(&thread_ctrl::m_icv);
}
}
else if (_this->m_guard == 0)
{
// Set interrupt immediately if no guard set
if (const auto handler = _this->m_iptr.exchange(nullptr))
{
_this->_notify(&thread_ctrl::m_icv);
#ifdef _WIN32
// Install function call
s_tls_ret_addr = RIP(ctx);
s_tls_ret_pos = is_leaf_function(s_tls_ret_addr) ? 0 : RSP(ctx) -= sizeof(u64);
s_tls_handler = handler;
RIP(ctx) = (u64)execute_interrupt_handler;
#else
// Call handler directly (TODO: install function call preserving red zone)
return handler();
#endif
}
}
else
{
// Set delayed interrupt otherwise
_this->m_guard |= 0x40000000;
}
#ifdef _WIN32
RtlRestoreContext(ctx, nullptr);
#endif
}
void thread_ctrl::interrupt(void(*handler)())
{
semaphore_lock lock(m_mutex);
verify(HERE), this != g_tls_this_thread; // TODO: self-interrupt
verify(HERE), m_iptr.compare_and_swap_test(nullptr, handler); // TODO: multiple interrupts
#ifdef _WIN32
const auto ctx = &s_tls_context;
const HANDLE nt = (HANDLE)m_thread.load();//OpenThread(THREAD_ALL_ACCESS, FALSE, m_data->thread_id);
verify(HERE), nt;
verify(HERE), SuspendThread(nt) != -1;
ctx->ContextFlags = CONTEXT_FULL;
verify(HERE), GetThreadContext(nt, ctx);
ctx->ContextFlags = CONTEXT_FULL;
const u64 _rip = RIP(ctx);
RIP(ctx) = (u64)std::addressof(thread_ctrl::handle_interrupt);
verify(HERE), SetThreadContext(nt, ctx);
RIP(ctx) = _rip;
verify(HERE), ResumeThread(nt) != -1;
//CloseHandle(nt);
#else
pthread_kill(m_thread.load(), SIGUSR1);
#endif
while (m_iptr)
{
m_icv.wait(lock);
}
}
void thread_ctrl::test_interrupt()
{
if (m_guard & 0x80000000)
{
if (m_iptr.exchange(nullptr))
{
_notify(&thread_ctrl::m_icv);
}
return;
}
if (m_guard == 0x40000000 && !std::uncaught_exception())
{
m_guard = 0;
// Execute delayed interrupt handler
if (const auto handler = m_iptr.exchange(nullptr))
{
_notify(&thread_ctrl::m_icv);
return handler();
}
}
}
void thread_ctrl::test() void thread_ctrl::test()
{ {
const auto _this = g_tls_this_thread; const auto _this = g_tls_this_thread;

View File

@ -112,15 +112,6 @@ class thread_ctrl final
// Thread initial task or atexit task // Thread initial task or atexit task
task_stack m_task; task_stack m_task;
// Thread interrupt guard counter
volatile u32 m_guard = 0x80000000;
// Thread interrupt condition variable
cond_variable m_icv;
// Interrupt function
atomic_t<void(*)()> m_iptr{nullptr};
// Fixed name // Fixed name
std::string m_name; std::string m_name;
@ -170,42 +161,6 @@ public:
// Notify the thread // Notify the thread
void notify(); void notify();
// Internal
static void handle_interrupt();
// Interrupt thread with specified handler call
void interrupt(void(*handler)());
// Interrupt guard recursive enter
void guard_enter()
{
m_guard++;
}
// Interrupt guard recursive leave
void guard_leave()
{
if (UNLIKELY(--m_guard & 0x40000000))
{
test_interrupt();
}
}
// Allow interrupts
void interrupt_enable()
{
m_guard &= ~0x80000000;
}
// Disable and discard any interrupt
void interrupt_disable()
{
m_guard |= 0x80000000;
}
// Check interrupt if delayed by guard scope
void test_interrupt();
// Wait once with timeout. Abortable, may throw. May spuriously return false. // Wait once with timeout. Abortable, may throw. May spuriously return false.
static inline bool wait_for(u64 usec) static inline bool wait_for(u64 usec)
{ {
@ -333,36 +288,6 @@ public:
} }
}; };
// Interrupt guard scope
class thread_guard final
{
thread_ctrl* m_thread;
public:
thread_guard(const thread_guard&) = delete;
thread_guard(thread_ctrl* thread)
//: m_thread(thread)
{
//m_thread->guard_enter();
}
thread_guard(named_thread& thread)
//: thread_guard(thread.get())
{
}
thread_guard()
//: thread_guard(thread_ctrl::get_current())
{
}
~thread_guard() noexcept(false)
{
//m_thread->guard_leave();
}
};
// Wrapper for named thread, joins automatically in the destructor, can only be used in function scope // Wrapper for named thread, joins automatically in the destructor, can only be used in function scope
class scope_thread final class scope_thread final
{ {