Esempio n. 1
0
    void become_dependent(THREAD) {
      thread::Mutex::LockGuard guard(mutex_);

      switch(state->run_state()) {
      case ManagedThread::eAlone:
        // Running alone, ignore.
        return;
      case ManagedThread::eRunning:
        // Ignore this, a running thread is already dependent.
        return;
      case ManagedThread::eSuspended:
        // Again, bad, don't allow this.
        rubinius::bug("Trying to make a suspended thread dependent");
        break;
      case ManagedThread::eIndependent:
        // If the GC is running, wait here...
        while(should_stop_) {
          waiting_to_run_.wait(mutex_);
        }

        // Ok, we're running again.
        state->run_state_ = ManagedThread::eRunning;
        pending_threads_++;
      }
    }
Esempio n. 2
0
    void wait_til_alone(THREAD) {
      thread::Mutex::LockGuard guard(mutex_);
      should_stop_ = true;

      if(cDebugThreading) {
        std::cerr << "[" << VM::current() << " WORLD waiting until alone]\n";
      }

      if(state->run_state_ != ManagedThread::eRunning) {
        rubinius::bug("A non-running thread is trying to wait till alone");
      }

      // For ourself..
      pending_threads_--;

      timer::Running<> timer(time_waiting_);

      while(pending_threads_ > 0) {
        if(cDebugThreading) {
          std::cerr << "[" << VM::current() << " WORLD waiting on condvar: "
                    << pending_threads_ << "]\n";
        }
        waiting_to_stop_.wait(mutex_);
      }

      state->run_state_ = ManagedThread::eAlone;

      if(cDebugThreading) {
        std::cerr << "[" << VM::current() << " WORLD o/~ I think we're alone now.. o/~]\n";
      }
    }
Esempio n. 3
0
    void become_dependent() {
      thread::Mutex::LockGuard guard(mutex_);

      // If the GC is running, wait here...
      while(should_stop_) {
        waiting_to_run_.wait(mutex_);
      }

      pending_threads_++;
    }
Esempio n. 4
0
    void wait_to_run() {
      pending_threads_--;
      waiting_to_stop_.signal();

      while(should_stop_) {
        waiting_to_run_.wait(mutex_);
      }

      pending_threads_++;
    }
Esempio n. 5
0
    void pause() {
      thread::Mutex::LockGuard guard(mutex_);

      // it's idle, ie paused.
      if(state == cIdle || state == cPaused) return;

      pause_ = true;

      while(!paused_) {
        pause_condition_.wait(mutex_);
      }
    }
Esempio n. 6
0
    void wait_til_alone() {
      thread::Mutex::LockGuard guard(mutex_);
      should_stop_ = true;

      // For ourself..
      pending_threads_--;

      timer::Running timer(time_waiting_);

      while(pending_threads_ > 0) {
        waiting_to_stop_.wait(mutex_);
      }
    }
Esempio n. 7
0
    void wait_to_run(THREAD) {
      if(cDebugThreading) {
        std::cerr << "[" << VM::current() << " WORLD stopping, waiting to be restarted]\n";
      }

      if(state->run_state_ != ManagedThread::eRunning) {
        rubinius::bug("Suspending a non running thread!");
      }

      state->run_state_ = ManagedThread::eSuspended;
      pending_threads_--;
      waiting_to_stop_.signal();

      while(should_stop_) {
        waiting_to_run_.wait(mutex_);
      }

      pending_threads_++;
      state->run_state_ = ManagedThread::eRunning;

      if(cDebugThreading) {
        std::cerr << "[" << VM::current() << " WORLD restarted]\n";
      }
    }
Esempio n. 8
0
    virtual void perform() {
      for(;;) { // forever

        BackgroundCompileRequest* req = 0;

        // Lock, wait, get a request, unlock
        {
          thread::Mutex::LockGuard guard(mutex_);

          if(pause_) {
            state = cPaused;

            paused_ = true;
            pause_condition_.signal();

            while(pause_) {
              condition_.wait(mutex_);
            }

            state = cUnknown;
            paused_ = false;
          }

          // If we've been asked to stop, do so now.
          if(stop_) return;

          while(pending_requests_.size() == 0) {
            state = cIdle;

            // unlock and wait...
            condition_.wait(mutex_);

            if(stop_) return;
          }

          // now locked again, shift a request
          req = pending_requests_.front();
          pending_requests_.pop_front();

          state = cRunning;
        }

        // mutex now unlock, allowing others to push more requests
        //


        LLVMCompiler* jit = new LLVMCompiler();

        {
          timer::Running timer(ls_->time_spent);
          jit->compile(ls_, req->vmmethod(), req->is_block());
          jit->generate_function(ls_);
        }

        if(show_machine_code_) {
          jit->show_machine_code();
        }

        // Ok, compiled, generated machine code, now update MachineMethod

        // Ok, now we are manipulating managed memory, so make
        // sure the GC doesn't run.
        ls_->shared().gc_dependent();

        req->vmmethod()->set_jitted(jit->llvm_function(),
                                    jit->code_bytes(),
                                    jit->function_pointer());

        if(req->is_block()) {
          BlockEnvironment* be = req->block_env();
          if(!be) {
            llvm::outs() << "Fatal error in JIT. Expected a BlockEnvironment.\n";
          } else {
            be->set_native_function(jit->function_pointer());
          }
        } else {
          MachineMethod* mm = req->machine_method();
          if(!mm) {
            llvm::outs() << "Fatal error in JIT. Expected a MachineMethod.\n";
          } else {
            mm->update(req->vmmethod(), jit);
            mm->activate();
          }
        }

        int which = ls_->add_jitted_method();
        if(ls_->config().jit_show_compiling) {
          llvm::outs() << "[[[ JIT finished background compiling "
                    << which
                    << (req->is_block() ? " (block)" : " (method)")
                    << " ]]]\n";
        }

        delete req;

        // We don't depend on the GC here, so let it run independent
        // of us.
        ls_->shared().gc_independent();
      }
    }
Esempio n. 9
0
    virtual void perform() {
      set_name("rbx.jit");

      ManagedThread::set_current(ls_);

#ifndef RBX_WINDOWS
      sigset_t set;
      sigfillset(&set);
      pthread_sigmask(SIG_SETMASK, &set, NULL);
#endif

      for(;;) { // forever

        BackgroundCompileRequest* req = 0;

        // Lock, wait, get a request, unlock
        {
          thread::Mutex::LockGuard guard(mutex_);

          if(pause_) {
            state = cPaused;

            paused_ = true;
            pause_condition_.broadcast();

            while(pause_) {
              condition_.wait(mutex_);
            }

            state = cUnknown;
            paused_ = false;
          }

          // If we've been asked to stop, do so now.
          if(stop_) return;

          while(pending_requests_.empty()) {
            state = cIdle;

            // unlock and wait...
            condition_.wait(mutex_);

            if(stop_) return;
          }

          // now locked again, shift a request
          req = pending_requests_.front();

          state = cRunning;
        }

        // This isn't ideal, but it's the safest. Keep the GC from
        // running while we're building the IR.
        ls_->shared().gc_dependent(ls_);

        // mutex now unlock, allowing others to push more requests
        //

        current_req_ = req;

        jit::Compiler jit(ls_);
        current_compiler_ = &jit;

        int spec_id = 0;
        if(Class* cls = req->receiver_class()) {
          spec_id = cls->class_id();
        }

        void* func = 0;
        {
          timer::Running<1000000> timer(ls_->shared().stats.jit_time_spent);

          jit.compile(ls_, req);

          func = jit.generate_function(ls_);
        }

        // We were unable to compile this function, likely
        // because it's got something we don't support.
        if(!func) {
          if(ls_->config().jit_show_compiling) {
            llvm::outs() << "[[[ JIT error in background compiling ]]]\n";
          }
          // If someone was waiting on this, wake them up.
          if(thread::Condition* cond = req->waiter()) {
            cond->signal();
          }

          current_req_ = 0;
          current_compiler_ = 0;
          pending_requests_.pop_front();
          delete req;

          // We don't depend on the GC here, so let it run independent
          // of us.
          ls_->shared().gc_independent(ls_);

          continue;
        }

        if(show_machine_code_) {
          jit.show_machine_code();
        }

        // If the method has had jit'ing request disabled since we started
        // JIT'ing it, discard our work.
        if(!req->vmmethod()->jit_disabled()) {

          jit::RuntimeDataHolder* rd = jit.context().runtime_data_holder();

          ls_->start_method_update();

          if(!req->is_block()) {
            if(spec_id) {
              req->method()->add_specialized(spec_id, reinterpret_cast<executor>(func), rd);
            } else {
              req->method()->set_unspecialized(reinterpret_cast<executor>(func), rd);
            }
          } else {
            req->method()->set_unspecialized(reinterpret_cast<executor>(func), rd);
          }

          assert(req->method()->jit_data());

          ls_->end_method_update();

          rd->run_write_barrier(ls_->write_barrier(), req->method());

          ls_->shared().stats.jitted_methods++;

          if(ls_->config().jit_show_compiling) {
            llvm::outs() << "[[[ JIT finished background compiling "
                      << (req->is_block() ? " (block)" : " (method)")
                      << " ]]]\n";
          }
        }

        // If someone was waiting on this, wake them up.
        if(thread::Condition* cond = req->waiter()) {
          cond->signal();
        }

        current_req_ = 0;
        current_compiler_ = 0;
        pending_requests_.pop_front();
        delete req;

        // We don't depend on the GC here, so let it run independent
        // of us.
        ls_->shared().gc_independent(ls_);
      }
    }
Esempio n. 10
0
    virtual void perform() {
      sigset_t set;
      sigfillset(&set);

      pthread_sigmask(SIG_SETMASK, &set, NULL);

      for(;;) { // forever

        BackgroundCompileRequest* req = 0;

        // Lock, wait, get a request, unlock
        {
          thread::Mutex::LockGuard guard(mutex_);

          if(pause_) {
            state = cPaused;

            paused_ = true;
            pause_condition_.signal();

            while(pause_) {
              condition_.wait(mutex_);
            }

            state = cUnknown;
            paused_ = false;
          }

          // If we've been asked to stop, do so now.
          if(stop_) return;

          while(pending_requests_.size() == 0) {
            state = cIdle;

            // unlock and wait...
            condition_.wait(mutex_);

            if(stop_) return;
          }

          // now locked again, shift a request
          req = pending_requests_.front();
          pending_requests_.pop_front();

          state = cRunning;
        }

        // This isn't ideal, but it's the safest. Keep the GC from
        // running while we're building the IR.
        ls_->shared().gc_dependent();

        // mutex now unlock, allowing others to push more requests
        //

        jit::Compiler jit;

        void* func = 0;
        {
          timer::Running<size_t, 1000000> timer(ls_->shared().stats.jit_time_spent);

          if(req->is_block()) {
            jit.compile_block(ls_, req->method(), req->vmmethod());
          } else {
            jit.compile_method(ls_, req->method(), req->vmmethod());
          }

          func = jit.generate_function(ls_);
        }

        // We were unable to compile this function, likely
        // because it's got something we don't support.
        if(!func) {
          if(ls_->config().jit_show_compiling) {
            llvm::outs() << "[[[ JIT error in background compiling ]]]\n";
          }
          // If someone was waiting on this, wake them up.
          if(thread::Condition* cond = req->waiter()) {
            cond->signal();
          }

          delete req;

          // We don't depend on the GC here, so let it run independent
          // of us.
          ls_->shared().gc_independent();

          continue;
        }

        if(show_machine_code_) {
          jit.show_machine_code();
        }

        req->vmmethod()->set_jitted(jit.llvm_function(),
                                    jit.code_bytes(),
                                    func);

        if(!req->is_block()) {
          req->method()->execute = reinterpret_cast<executor>(func);
        }
        assert(req->method()->jit_data());

        req->method()->jit_data()->run_write_barrier(ls_->write_barrier(), req->method());

        ls_->shared().stats.jitted_methods++;

        if(ls_->config().jit_show_compiling) {
          llvm::outs() << "[[[ JIT finished background compiling "
                    << (req->is_block() ? " (block)" : " (method)")
                    << " ]]]\n";
        }

        // If someone was waiting on this, wake them up.
        if(thread::Condition* cond = req->waiter()) {
          cond->signal();
        }

        delete req;

        // We don't depend on the GC here, so let it run independent
        // of us.
        ls_->shared().gc_independent();
      }
    }