-/* Copyright (c) 2009-2017. The SimGrid Team. All rights reserved. */
+/* Copyright (c) 2009-2018. 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. */
-#ifndef SIMGRID_SIMIX_BOOST_CONTEXT_HPP
-#define SIMGRID_SIMIX_BOOST_CONTEXT_HPP
+#ifndef SIMGRID_SIMIX_RAW_CONTEXT_HPP
+#define SIMGRID_SIMIX_RAW_CONTEXT_HPP
+#include <atomic>
+#include <cstdint>
#include <functional>
+#include <vector>
-#include "Context.hpp"
-#include "src/internal_config.h"
-#include "src/simix/smx_private.hpp"
+#include <xbt/parmap.hpp>
+#include <xbt/xbt_os_thread.h>
namespace simgrid {
namespace kernel {
namespace context {
-class RawContext;
-class RawContextFactory;
-
/** @brief Fast context switching inspired from SystemV ucontexts.
*
* The main difference to the System V context is that Raw Contexts are much faster because they don't
* preserve the signal mask when switching. This saves a system call (at least on Linux) on each context switch.
*/
class RawContext : public Context {
+public:
+ RawContext(std::function<void()> code, void_pfn_smxprocess_t cleanup_func, smx_actor_t process);
+ ~RawContext() override;
+ void stop() override;
+ virtual void resume() = 0;
+
+ static void swap(RawContext* from, RawContext* to);
+ static RawContext* get_maestro() { return maestro_context_; }
+ static void set_maestro(RawContext* maestro) { maestro_context_ = maestro; }
+
private:
+ static RawContext* maestro_context_;
void* stack_ = nullptr;
/** pointer to top the stack stack */
void* stack_top_ = nullptr;
-public:
- friend class RawContextFactory;
- RawContext(std::function<void()> code, void_pfn_smxprocess_t cleanup_func, smx_actor_t process);
- ~RawContext() override;
+#if HAVE_SANITIZER_ADDRESS_FIBER_SUPPORT
+ const void* asan_stack_ = nullptr;
+ size_t asan_stack_size_ = 0;
+ RawContext* asan_ctx_ = nullptr;
+ bool asan_stop_ = false;
+#endif
static void wrapper(void* arg);
- void stop() override;
+};
+
+class SerialRawContext : public RawContext {
+public:
+ SerialRawContext(std::function<void()> code, void_pfn_smxprocess_t cleanup_func, smx_actor_t process)
+ : RawContext(std::move(code), cleanup_func, process)
+ {
+ }
void suspend() override;
- void resume();
+ void resume() override;
+
+ static void run_all();
+
+private:
+ static unsigned long process_index_;
+};
+
+class ParallelRawContext : public RawContext {
+public:
+ ParallelRawContext(std::function<void()> code, void_pfn_smxprocess_t cleanup_func, smx_actor_t process)
+ : RawContext(std::move(code), cleanup_func, process)
+ {
+ }
+ void suspend() override;
+ void resume() override;
+
+ static void initialize();
+ static void finalize();
+ static void run_all();
private:
- void suspend_serial();
- void suspend_parallel();
- void resume_serial();
- void resume_parallel();
+ static simgrid::xbt::Parmap<smx_actor_t>* parmap_;
+ static std::vector<ParallelRawContext*> workers_context_;
+ static std::atomic<uintptr_t> threads_working_;
+ static uintptr_t thread_local worker_id_;
};
class RawContextFactory : public ContextFactory {
public:
RawContextFactory();
~RawContextFactory() override;
- RawContext* create_context(std::function<void()> code, void_pfn_smxprocess_t cleanup, smx_actor_t process) override;
+ Context* create_context(std::function<void()> code, void_pfn_smxprocess_t cleanup, smx_actor_t process) override;
void run_all() override;
private:
- void run_all_serial();
- void run_all_parallel();
+ bool parallel_;
};
}}} // namespace
