-/* Copyright (c) 2009-2019. The SimGrid Team. All rights reserved. */
+/* Copyright (c) 2009-2020. The SimGrid Team. All rights reserved. */
/* This program is free software; you can redistribute it and/or modify it
* under the terms of the license (GNU LGPL) which comes with this package. */
class SwappedContextFactory : public ContextFactory {
friend SwappedContext; // Reads whether we are in parallel mode
public:
- SwappedContextFactory();
+ SwappedContextFactory() = default;
SwappedContextFactory(const SwappedContextFactory&) = delete;
SwappedContextFactory& operator=(const SwappedContextFactory&) = delete;
void run_all() override;
unsigned long process_index_ = 0; // next actor to execute
SwappedContext* maestro_context_ = nullptr; // save maestro's context
- /* For the parallel execution */
- std::unique_ptr<simgrid::xbt::Parmap<smx_actor_t>> parmap_;
+ /* For the parallel execution, will be created lazily with the right parameters if needed (ie, in parallel) */
+ std::unique_ptr<simgrid::xbt::Parmap<smx_actor_t>> parmap_{nullptr};
};
class SwappedContext : public Context {
void suspend() override;
virtual void resume();
- void stop() override;
+ XBT_ATTRIB_NORETURN void stop() override;
virtual void swap_into(SwappedContext* to) = 0; // Defined in Raw, Boost and UContext subclasses
- unsigned char* get_stack();
-
- static thread_local SwappedContext* worker_context_;
+ unsigned char* get_stack() const { return stack_; }
+ // Return the address for the bottom of the stack. Depending on the stack direction it may be the lower or higher
+ // address
+ unsigned char* get_stack_bottom() const { return PTH_STACKGROWTH == -1 ? stack_ + smx_context_stack_size : stack_; }
#if HAVE_SANITIZER_ADDRESS_FIBER_SUPPORT
const void* asan_stack_ = nullptr;
bool asan_stop_ = false;
#endif
+protected:
+ // With ASan, after a context switch, check that the originating context is the expected one (see BoostContext)
+ void verify_previous_context(const SwappedContext* context) const;
+
private:
- unsigned char* stack_ = nullptr; /* the thread stack */
- SwappedContextFactory* const factory_; // for sequential and parallel run_all()
+ static thread_local SwappedContext* worker_context_;
+
+ unsigned char* stack_ = nullptr; // the thread stack
+ SwappedContextFactory& factory_; // for sequential and parallel run_all()
#if HAVE_VALGRIND_H
unsigned int valgrind_stack_id_;
#endif
};
+inline void SwappedContext::verify_previous_context(XBT_ATTRIB_UNUSED const SwappedContext* context) const
+{
+#if HAVE_SANITIZER_ADDRESS_FIBER_SUPPORT
+ xbt_assert(this->asan_ctx_ == context);
+#endif
+}
+
} // namespace context
} // namespace kernel
} // namespace simgrid