Change a subclass into a superclass around contexts

[simgrid.git] / src / kernel / context / ContextUnix.hpp

diff --git a/src/kernel/context/ContextUnix.hpp b/src/kernel/context/ContextUnix.hpp
index 94608da..e295305 100644 (file)
--- a/src/kernel/context/ContextUnix.hpp
+++ b/src/kernel/context/ContextUnix.hpp
@@ -1,4 +1,4 @@
-/* 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. */
@@ -8,6 +8,7 @@
 
 #include <ucontext.h> /* context relative declarations */
 
+#include <atomic>
 #include <cstdint>
 #include <functional>
 #include <vector>
@@ -16,39 +17,34 @@
 #include <xbt/parmap.hpp>
 #include <xbt/xbt_os_thread.h>
 
-#include "Context.hpp"
 #include "src/internal_config.h"
-#include "src/simix/smx_private.hpp"
+#include "src/kernel/context/ContextSwapped.hpp"
 
 namespace simgrid {
 namespace kernel {
 namespace context {
 
-class UContext;
-class SerialUContext;
-class ParallelUContext;
-class UContextFactory;
-
-class UContext : public Context {
-private:
-  ucontext_t uc_;         /* the ucontext that executes the code */
-  char* stack_ = nullptr; /* the thread stack */
+class UContext : public SwappedContext {
 public:
-  friend UContextFactory;
   UContext(std::function<void()> code, void_pfn_smxprocess_t cleanup_func, smx_actor_t process);
   ~UContext() override;
   void stop() override;
-  static void swap(UContext* from, UContext* to) { swapcontext(&from->uc_, &to->uc_); }
-};
 
-class SerialUContext : public UContext {
-public:
-  SerialUContext(std::function<void()> code, void_pfn_smxprocess_t cleanup_func, smx_actor_t process)
-      : UContext(std::move(code), cleanup_func, process)
-  {
-  }
-  void suspend() override;
-  void resume();
+  void swap_into(SwappedContext* to) override;
+
+private:
+  void* stack_ = nullptr; /* the thread stack */
+  ucontext_t uc_;         /* the ucontext that executes the code */
+
+#if HAVE_SANITIZER_ADDRESS_FIBER_SUPPORT
+  const void* asan_stack_ = nullptr;
+  size_t asan_stack_size_ = 0;
+  UContext* asan_ctx_     = nullptr;
+  bool asan_stop_         = false;
+#endif
+
+  static void smx_ctx_sysv_wrapper(int, int);
+  static void make_ctx(ucontext_t* ucp, void (*func)(int, int), UContext* arg);
 };
 
 class ParallelUContext : public UContext {
@@ -58,19 +54,28 @@ public:
   {
   }
   void suspend() override;
-  void resume();
+  void resume() override;
+
+  static void initialize();
+  static void finalize();
+  static void run_all();
+
+private:
+  static simgrid::xbt::Parmap<smx_actor_t>* parmap_;
+  static std::vector<ParallelUContext*> workers_context_;
+  static std::atomic<uintptr_t> threads_working_;
+  static thread_local uintptr_t worker_id_;
 };
 
 class UContextFactory : public ContextFactory {
 public:
-  friend UContext;
-  friend SerialUContext;
-  friend ParallelUContext;
-
   UContextFactory();
   ~UContextFactory() override;
   Context* create_context(std::function<void()> code, void_pfn_smxprocess_t cleanup, smx_actor_t process) override;
   void run_all() override;
+
+private:
+  bool parallel_;
 };
 }}} // namespace