mirror of
https://github.com/dolphin-emu/dolphin.git
synced 2025-07-25 23:29:44 -06:00
Reformat all the things. Have fun with merge conflicts.
This commit is contained in:
Pierre Bourdon
@ -10,15 +10,14 @@
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#include "Common/Event.h"
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#include "Common/Logging/Log.h"
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#include "Core/Core.h"
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#include "Core/Host.h"
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#include "Core/HW/CPU.h"
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#include "Core/HW/Memmap.h"
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#include "Core/Host.h"
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#include "Core/PowerPC/PowerPC.h"
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#include "VideoCommon/Fifo.h"
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namespace CPU
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{
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// CPU Thread execution state.
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// Requires s_state_change_lock to modify the value.
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// Read access is unsynchronized.
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@ -36,157 +35,152 @@ static std::mutex s_stepping_lock;
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// Primary lock. Protects changing s_state, requesting instruction stepping and
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// pause-and-locking.
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static std::mutex s_state_change_lock;
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static std::mutex s_state_change_lock;
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// When s_state_cpu_thread_active changes to false
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static std::condition_variable s_state_cpu_idle_cvar;
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// When s_state changes / s_state_paused_and_locked becomes false (for CPU Thread only)
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static std::condition_variable s_state_cpu_cvar;
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static bool s_state_cpu_thread_active = false;
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static bool s_state_paused_and_locked = false;
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static bool s_state_system_request_stepping = false;
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static bool s_state_cpu_step_instruction = false;
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static Common::Event* s_state_cpu_step_instruction_sync = nullptr;
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static bool s_state_cpu_thread_active = false;
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static bool s_state_paused_and_locked = false;
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static bool s_state_system_request_stepping = false;
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static bool s_state_cpu_step_instruction = false;
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static Common::Event* s_state_cpu_step_instruction_sync = nullptr;
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void Init(int cpu_core)
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{
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PowerPC::Init(cpu_core);
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s_state = CPU_STEPPING;
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PowerPC::Init(cpu_core);
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s_state = CPU_STEPPING;
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}
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void Shutdown()
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{
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Stop();
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PowerPC::Shutdown();
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Stop();
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PowerPC::Shutdown();
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}
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// Requires holding s_state_change_lock
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static void FlushStepSyncEventLocked()
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{
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if (s_state_cpu_step_instruction_sync)
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{
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s_state_cpu_step_instruction_sync->Set();
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s_state_cpu_step_instruction_sync = nullptr;
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}
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s_state_cpu_step_instruction = false;
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if (s_state_cpu_step_instruction_sync)
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{
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s_state_cpu_step_instruction_sync->Set();
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s_state_cpu_step_instruction_sync = nullptr;
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}
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s_state_cpu_step_instruction = false;
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}
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void Run()
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{
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std::unique_lock<std::mutex> state_lock(s_state_change_lock);
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while (s_state != CPU_POWERDOWN)
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{
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s_state_cpu_cvar.wait(state_lock, [] { return !s_state_paused_and_locked; });
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std::unique_lock<std::mutex> state_lock(s_state_change_lock);
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while (s_state != CPU_POWERDOWN)
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{
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s_state_cpu_cvar.wait(state_lock, [] { return !s_state_paused_and_locked; });
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switch (s_state)
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{
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case CPU_RUNNING:
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s_state_cpu_thread_active = true;
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state_lock.unlock();
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switch (s_state)
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{
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case CPU_RUNNING:
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s_state_cpu_thread_active = true;
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state_lock.unlock();
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// Adjust PC for JIT when debugging
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// SingleStep so that the "continue", "step over" and "step out" debugger functions
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// work when the PC is at a breakpoint at the beginning of the block
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// If watchpoints are enabled, any instruction could be a breakpoint.
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if (PowerPC::GetMode() != PowerPC::MODE_INTERPRETER)
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{
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// Adjust PC for JIT when debugging
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// SingleStep so that the "continue", "step over" and "step out" debugger functions
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// work when the PC is at a breakpoint at the beginning of the block
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// If watchpoints are enabled, any instruction could be a breakpoint.
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if (PowerPC::GetMode() != PowerPC::MODE_INTERPRETER)
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{
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#ifndef ENABLE_MEM_CHECK
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if (PowerPC::breakpoints.IsAddressBreakPoint(PC))
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if (PowerPC::breakpoints.IsAddressBreakPoint(PC))
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#endif
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{
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PowerPC::CoreMode old_mode = PowerPC::GetMode();
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PowerPC::SetMode(PowerPC::MODE_INTERPRETER);
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PowerPC::SingleStep();
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PowerPC::SetMode(old_mode);
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}
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}
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{
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PowerPC::CoreMode old_mode = PowerPC::GetMode();
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PowerPC::SetMode(PowerPC::MODE_INTERPRETER);
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PowerPC::SingleStep();
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PowerPC::SetMode(old_mode);
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}
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}
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// Enter a fast runloop
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PowerPC::RunLoop();
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// Enter a fast runloop
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PowerPC::RunLoop();
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state_lock.lock();
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s_state_cpu_thread_active = false;
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s_state_cpu_idle_cvar.notify_all();
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break;
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state_lock.lock();
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s_state_cpu_thread_active = false;
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s_state_cpu_idle_cvar.notify_all();
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break;
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case CPU_STEPPING:
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// Wait for step command.
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s_state_cpu_cvar.wait(state_lock, []
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{
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return s_state_cpu_step_instruction ||
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s_state != CPU_STEPPING;
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});
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if (s_state != CPU_STEPPING)
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{
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// Signal event if the mode changes.
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FlushStepSyncEventLocked();
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continue;
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}
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if (s_state_paused_and_locked)
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continue;
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case CPU_STEPPING:
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// Wait for step command.
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s_state_cpu_cvar.wait(state_lock,
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[] { return s_state_cpu_step_instruction || s_state != CPU_STEPPING; });
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if (s_state != CPU_STEPPING)
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{
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// Signal event if the mode changes.
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FlushStepSyncEventLocked();
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continue;
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}
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if (s_state_paused_and_locked)
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continue;
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// Do step
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s_state_cpu_thread_active = true;
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state_lock.unlock();
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// Do step
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s_state_cpu_thread_active = true;
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state_lock.unlock();
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PowerPC::SingleStep();
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PowerPC::SingleStep();
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state_lock.lock();
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s_state_cpu_thread_active = false;
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s_state_cpu_idle_cvar.notify_all();
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state_lock.lock();
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s_state_cpu_thread_active = false;
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s_state_cpu_idle_cvar.notify_all();
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// Update disasm dialog
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FlushStepSyncEventLocked();
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Host_UpdateDisasmDialog();
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break;
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// Update disasm dialog
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FlushStepSyncEventLocked();
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Host_UpdateDisasmDialog();
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break;
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case CPU_POWERDOWN:
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break;
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}
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}
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state_lock.unlock();
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Host_UpdateDisasmDialog();
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case CPU_POWERDOWN:
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break;
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}
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}
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state_lock.unlock();
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Host_UpdateDisasmDialog();
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}
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// Requires holding s_state_change_lock
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static void RunAdjacentSystems(bool running)
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{
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// NOTE: We're assuming these will not try to call Break or EnableStepping.
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Fifo::EmulatorState(running);
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AudioCommon::ClearAudioBuffer(!running);
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// NOTE: We're assuming these will not try to call Break or EnableStepping.
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Fifo::EmulatorState(running);
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AudioCommon::ClearAudioBuffer(!running);
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}
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void Stop()
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{
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// Change state and wait for it to be acknowledged.
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// We don't need the stepping lock because CPU_POWERDOWN is a priority state which
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// will stick permanently.
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std::unique_lock<std::mutex> state_lock(s_state_change_lock);
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s_state = CPU_POWERDOWN;
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s_state_cpu_cvar.notify_one();
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// FIXME: MsgHandler can cause this to deadlock the GUI Thread. Remove the timeout.
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bool success = s_state_cpu_idle_cvar.wait_for(state_lock, std::chrono::seconds(5), []
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{
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return !s_state_cpu_thread_active;
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});
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if (!success)
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ERROR_LOG(POWERPC, "CPU Thread failed to acknowledge CPU_POWERDOWN. It may be deadlocked.");
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RunAdjacentSystems(false);
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FlushStepSyncEventLocked();
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// Change state and wait for it to be acknowledged.
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// We don't need the stepping lock because CPU_POWERDOWN is a priority state which
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// will stick permanently.
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std::unique_lock<std::mutex> state_lock(s_state_change_lock);
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s_state = CPU_POWERDOWN;
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s_state_cpu_cvar.notify_one();
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// FIXME: MsgHandler can cause this to deadlock the GUI Thread. Remove the timeout.
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bool success = s_state_cpu_idle_cvar.wait_for(state_lock, std::chrono::seconds(5),
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[] { return !s_state_cpu_thread_active; });
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if (!success)
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ERROR_LOG(POWERPC, "CPU Thread failed to acknowledge CPU_POWERDOWN. It may be deadlocked.");
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RunAdjacentSystems(false);
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FlushStepSyncEventLocked();
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}
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bool IsStepping()
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{
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return s_state == CPU_STEPPING;
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return s_state == CPU_STEPPING;
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}
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State GetState()
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{
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return s_state;
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return s_state;
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}
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const volatile State* GetStatePtr()
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{
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return &s_state;
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return &s_state;
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}
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void Reset()
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@ -195,142 +189,139 @@ void Reset()
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void StepOpcode(Common::Event* event)
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{
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std::lock_guard<std::mutex> state_lock(s_state_change_lock);
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// If we're not stepping then this is pointless
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if (!IsStepping())
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{
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if (event)
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event->Set();
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return;
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}
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std::lock_guard<std::mutex> state_lock(s_state_change_lock);
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// If we're not stepping then this is pointless
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if (!IsStepping())
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{
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if (event)
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event->Set();
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return;
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}
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// Potential race where the previous step has not been serviced yet.
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if (s_state_cpu_step_instruction_sync && s_state_cpu_step_instruction_sync != event)
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s_state_cpu_step_instruction_sync->Set();
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// Potential race where the previous step has not been serviced yet.
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if (s_state_cpu_step_instruction_sync && s_state_cpu_step_instruction_sync != event)
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s_state_cpu_step_instruction_sync->Set();
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s_state_cpu_step_instruction = true;
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s_state_cpu_step_instruction_sync = event;
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s_state_cpu_cvar.notify_one();
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s_state_cpu_step_instruction = true;
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s_state_cpu_step_instruction_sync = event;
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s_state_cpu_cvar.notify_one();
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}
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// Requires s_state_change_lock
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static bool SetStateLocked(State s)
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{
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if (s_state == CPU_POWERDOWN)
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return false;
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s_state = s;
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return true;
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if (s_state == CPU_POWERDOWN)
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return false;
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s_state = s;
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return true;
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}
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void EnableStepping(bool stepping)
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{
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std::lock_guard<std::mutex> stepping_lock(s_stepping_lock);
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std::unique_lock<std::mutex> state_lock(s_state_change_lock);
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std::lock_guard<std::mutex> stepping_lock(s_stepping_lock);
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std::unique_lock<std::mutex> state_lock(s_state_change_lock);
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if (stepping)
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{
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SetStateLocked(CPU_STEPPING);
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if (stepping)
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{
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SetStateLocked(CPU_STEPPING);
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// Wait for the CPU Thread to leave the run loop
|
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// FIXME: MsgHandler can cause this to deadlock the GUI Thread. Remove the timeout.
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bool success = s_state_cpu_idle_cvar.wait_for(state_lock, std::chrono::seconds(5), []
|
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{
|
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return !s_state_cpu_thread_active;
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});
|
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if (!success)
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ERROR_LOG(POWERPC, "Abandoned waiting for CPU Thread! The Core may be deadlocked.");
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// Wait for the CPU Thread to leave the run loop
|
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// FIXME: MsgHandler can cause this to deadlock the GUI Thread. Remove the timeout.
|
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bool success = s_state_cpu_idle_cvar.wait_for(state_lock, std::chrono::seconds(5),
|
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[] { return !s_state_cpu_thread_active; });
|
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if (!success)
|
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ERROR_LOG(POWERPC, "Abandoned waiting for CPU Thread! The Core may be deadlocked.");
|
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|
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RunAdjacentSystems(false);
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}
|
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else if (SetStateLocked(CPU_RUNNING))
|
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{
|
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s_state_cpu_cvar.notify_one();
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RunAdjacentSystems(true);
|
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}
|
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RunAdjacentSystems(false);
|
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}
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else if (SetStateLocked(CPU_RUNNING))
|
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{
|
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s_state_cpu_cvar.notify_one();
|
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RunAdjacentSystems(true);
|
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}
|
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}
|
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|
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void Break()
|
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{
|
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std::lock_guard<std::mutex> state_lock(s_state_change_lock);
|
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std::lock_guard<std::mutex> state_lock(s_state_change_lock);
|
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|
||||
// If another thread is trying to PauseAndLock then we need to remember this
|
||||
// for later to ignore the unpause_on_unlock.
|
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if (s_state_paused_and_locked)
|
||||
{
|
||||
s_state_system_request_stepping = true;
|
||||
return;
|
||||
}
|
||||
// If another thread is trying to PauseAndLock then we need to remember this
|
||||
// for later to ignore the unpause_on_unlock.
|
||||
if (s_state_paused_and_locked)
|
||||
{
|
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s_state_system_request_stepping = true;
|
||||
return;
|
||||
}
|
||||
|
||||
// We'll deadlock if we synchronize, the CPU may block waiting for our caller to
|
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// finish resulting in the CPU loop never terminating.
|
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SetStateLocked(CPU_STEPPING);
|
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RunAdjacentSystems(false);
|
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// We'll deadlock if we synchronize, the CPU may block waiting for our caller to
|
||||
// finish resulting in the CPU loop never terminating.
|
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SetStateLocked(CPU_STEPPING);
|
||||
RunAdjacentSystems(false);
|
||||
}
|
||||
|
||||
bool PauseAndLock(bool do_lock, bool unpause_on_unlock, bool control_adjacent)
|
||||
{
|
||||
// NOTE: This is protected by s_stepping_lock.
|
||||
static bool s_have_fake_cpu_thread = false;
|
||||
bool was_unpaused = false;
|
||||
// NOTE: This is protected by s_stepping_lock.
|
||||
static bool s_have_fake_cpu_thread = false;
|
||||
bool was_unpaused = false;
|
||||
|
||||
if (do_lock)
|
||||
{
|
||||
s_stepping_lock.lock();
|
||||
if (do_lock)
|
||||
{
|
||||
s_stepping_lock.lock();
|
||||
|
||||
std::unique_lock<std::mutex> state_lock(s_state_change_lock);
|
||||
s_state_paused_and_locked = true;
|
||||
std::unique_lock<std::mutex> state_lock(s_state_change_lock);
|
||||
s_state_paused_and_locked = true;
|
||||
|
||||
was_unpaused = s_state == CPU_RUNNING;
|
||||
SetStateLocked(CPU_STEPPING);
|
||||
was_unpaused = s_state == CPU_RUNNING;
|
||||
SetStateLocked(CPU_STEPPING);
|
||||
|
||||
// FIXME: MsgHandler can cause this to deadlock the GUI Thread. Remove the timeout.
|
||||
bool success = s_state_cpu_idle_cvar.wait_for(state_lock, std::chrono::seconds(10), []
|
||||
{
|
||||
return !s_state_cpu_thread_active;
|
||||
});
|
||||
if (!success)
|
||||
NOTICE_LOG(POWERPC, "Abandoned CPU Thread synchronization in CPU::PauseAndLock! We'll probably crash now.");
|
||||
// FIXME: MsgHandler can cause this to deadlock the GUI Thread. Remove the timeout.
|
||||
bool success = s_state_cpu_idle_cvar.wait_for(state_lock, std::chrono::seconds(10),
|
||||
[] { return !s_state_cpu_thread_active; });
|
||||
if (!success)
|
||||
NOTICE_LOG(
|
||||
POWERPC,
|
||||
"Abandoned CPU Thread synchronization in CPU::PauseAndLock! We'll probably crash now.");
|
||||
|
||||
if (control_adjacent)
|
||||
RunAdjacentSystems(false);
|
||||
state_lock.unlock();
|
||||
if (control_adjacent)
|
||||
RunAdjacentSystems(false);
|
||||
state_lock.unlock();
|
||||
|
||||
// NOTE: It would make more sense for Core::DeclareAsCPUThread() to keep a
|
||||
// depth counter instead of being a boolean.
|
||||
if (!Core::IsCPUThread())
|
||||
{
|
||||
s_have_fake_cpu_thread = true;
|
||||
Core::DeclareAsCPUThread();
|
||||
}
|
||||
}
|
||||
else
|
||||
{
|
||||
// Only need the stepping lock for this
|
||||
if (s_have_fake_cpu_thread)
|
||||
{
|
||||
s_have_fake_cpu_thread = false;
|
||||
Core::UndeclareAsCPUThread();
|
||||
}
|
||||
// NOTE: It would make more sense for Core::DeclareAsCPUThread() to keep a
|
||||
// depth counter instead of being a boolean.
|
||||
if (!Core::IsCPUThread())
|
||||
{
|
||||
s_have_fake_cpu_thread = true;
|
||||
Core::DeclareAsCPUThread();
|
||||
}
|
||||
}
|
||||
else
|
||||
{
|
||||
// Only need the stepping lock for this
|
||||
if (s_have_fake_cpu_thread)
|
||||
{
|
||||
s_have_fake_cpu_thread = false;
|
||||
Core::UndeclareAsCPUThread();
|
||||
}
|
||||
|
||||
{
|
||||
std::lock_guard<std::mutex> state_lock(s_state_change_lock);
|
||||
if (s_state_system_request_stepping)
|
||||
{
|
||||
s_state_system_request_stepping = false;
|
||||
}
|
||||
else if (unpause_on_unlock && SetStateLocked(CPU_RUNNING))
|
||||
{
|
||||
was_unpaused = true;
|
||||
}
|
||||
s_state_paused_and_locked = false;
|
||||
s_state_cpu_cvar.notify_one();
|
||||
{
|
||||
std::lock_guard<std::mutex> state_lock(s_state_change_lock);
|
||||
if (s_state_system_request_stepping)
|
||||
{
|
||||
s_state_system_request_stepping = false;
|
||||
}
|
||||
else if (unpause_on_unlock && SetStateLocked(CPU_RUNNING))
|
||||
{
|
||||
was_unpaused = true;
|
||||
}
|
||||
s_state_paused_and_locked = false;
|
||||
s_state_cpu_cvar.notify_one();
|
||||
|
||||
if (control_adjacent)
|
||||
RunAdjacentSystems(s_state == CPU_RUNNING);
|
||||
}
|
||||
s_stepping_lock.unlock();
|
||||
}
|
||||
return was_unpaused;
|
||||
if (control_adjacent)
|
||||
RunAdjacentSystems(s_state == CPU_RUNNING);
|
||||
}
|
||||
s_stepping_lock.unlock();
|
||||
}
|
||||
return was_unpaused;
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
Reference in New Issue
Block a user