X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/f5792a3bf76ce15a573ae5e9c63097595ae5f2bd..e36a2202155d007c72d9f54fdddf3f422a8503f8:/src/kernel/context/ContextBoost.cpp

diff --git a/src/kernel/context/ContextBoost.cpp b/src/kernel/context/ContextBoost.cpp
index 3028445dd9..6c5b2a5de3 100644
--- a/src/kernel/context/ContextBoost.cpp
+++ b/src/kernel/context/ContextBoost.cpp
@@ -30,7 +30,6 @@ public:
       void_pfn_smxprocess_t cleanup_func,
       smx_actor_t process)
     : BoostContext(std::move(code), cleanup_func, process) {}
-  void stop() override;
   void suspend() override;
 };
 
@@ -41,7 +40,6 @@ public:
       void_pfn_smxprocess_t cleanup_func,
       smx_actor_t process)
     : BoostContext(std::move(code), cleanup_func, process) {}
-  void stop() override;
   void suspend() override;
   void resume() override;
 };
@@ -63,10 +61,9 @@ BoostContextFactory::BoostContextFactory()
   BoostContext::parallel_ = SIMIX_context_is_parallel();
   if (BoostContext::parallel_) {
 #if HAVE_THREAD_CONTEXTS
-    int nthreads = SIMIX_context_get_nthreads();
-    BoostContext::parmap_ = new simgrid::xbt::Parmap<smx_actor_t>(nthreads, SIMIX_context_get_parallel_mode());
+    BoostContext::parmap_ = nullptr;
     BoostContext::workers_context_.clear();
-    BoostContext::workers_context_.resize(nthreads, nullptr);
+    BoostContext::workers_context_.resize(SIMIX_context_get_nthreads(), nullptr);
     BoostContext::maestro_context_ = nullptr;
     xbt_os_thread_key_create(&BoostContext::worker_id_key_);
 #else
@@ -78,10 +75,8 @@ BoostContextFactory::BoostContextFactory()
 BoostContextFactory::~BoostContextFactory()
 {
 #if HAVE_THREAD_CONTEXTS
-  if (BoostContext::parmap_) {
-    delete BoostContext::parmap_;
-    BoostContext::parmap_ = nullptr;
-  }
+  delete BoostContext::parmap_;
+  BoostContext::parmap_ = nullptr;
   BoostContext::workers_context_.clear();
 #endif
 }
@@ -106,6 +101,9 @@ void BoostContextFactory::run_all()
 #if HAVE_THREAD_CONTEXTS
   if (BoostContext::parallel_) {
     BoostContext::threads_working_ = 0;
+    if (not BoostContext::parmap_)
+      BoostContext::parmap_ =
+          new simgrid::xbt::Parmap<smx_actor_t>(SIMIX_context_get_nthreads(), SIMIX_context_get_parallel_mode());
     BoostContext::parmap_->apply(
         [](smx_actor_t process) {
           BoostContext* context = static_cast<BoostContext*>(process->context);
@@ -127,11 +125,34 @@ void BoostContextFactory::run_all()
 
 // BoostContext
 
-static void smx_ctx_boost_wrapper(std::intptr_t arg)
+void BoostContext::smx_ctx_boost_wrapper(BoostContext::ctx_arg_type arg)
 {
-  BoostContext* context = (BoostContext*)(arg);
-  (*context)();
-  context->stop();
+#if BOOST_VERSION < 106100
+  BoostContext* context = reinterpret_cast<BoostContext*>(arg);
+#else
+  static_cast<BoostContext**>(arg.data)[0]->fc_ = arg.fctx;
+  BoostContext* context                         = static_cast<BoostContext**>(arg.data)[1];
+#endif
+  try {
+    (*context)();
+    context->Context::stop();
+  } catch (StopRequest const&) {
+    XBT_DEBUG("Caught a StopRequest");
+  }
+  context->suspend();
+}
+
+inline void BoostContext::smx_ctx_boost_jump_fcontext(BoostContext* from, BoostContext* to)
+{
+#if BOOST_VERSION < 105600
+  boost::context::jump_fcontext(from->fc_, to->fc_, reinterpret_cast<intptr_t>(to));
+#elif BOOST_VERSION < 106100
+  boost::context::jump_fcontext(&from->fc_, to->fc_, reinterpret_cast<intptr_t>(to));
+#else
+  BoostContext* ctx[2]                          = {from, to};
+  boost::context::detail::transfer_t arg        = boost::context::detail::jump_fcontext(to->fc_, ctx);
+  static_cast<BoostContext**>(arg.data)[0]->fc_ = arg.fctx;
+#endif
 }
 
 BoostContext::BoostContext(std::function<void()> code,
@@ -145,16 +166,17 @@ BoostContext::BoostContext(std::function<void()> code,
 // We need to pass the bottom of the stack to make_fcontext, depending on the stack direction it may be the lower
 // or higher address:
 #if PTH_STACKGROWTH == -1
-    void* stack = static_cast<char*>(this->stack_) + smx_context_usable_stack_size - 1;
+    void* stack = static_cast<char*>(this->stack_) + smx_context_usable_stack_size;
 #else
     void* stack = this->stack_;
 #endif
-    this->fc_ = boost::context::make_fcontext(
-                      stack,
-                      smx_context_usable_stack_size,
-                      smx_ctx_boost_wrapper);
+#if BOOST_VERSION < 106100
+    this->fc_ = boost::context::make_fcontext(stack, smx_context_usable_stack_size, smx_ctx_boost_wrapper);
+#else
+    this->fc_ = boost::context::detail::make_fcontext(stack, smx_context_usable_stack_size, smx_ctx_boost_wrapper);
+#endif
   } else {
-#if HAVE_BOOST_CONTEXTS == 1
+#if BOOST_VERSION < 105600
     this->fc_ = new boost::context::fcontext_t();
 #endif
     if (BoostContext::maestro_context_ == nullptr)
@@ -164,7 +186,7 @@ BoostContext::BoostContext(std::function<void()> code,
 
 BoostContext::~BoostContext()
 {
-#if HAVE_BOOST_CONTEXTS == 1
+#if BOOST_VERSION < 105600
   if (not this->stack_)
     delete this->fc_;
 #endif
@@ -175,21 +197,23 @@ BoostContext::~BoostContext()
 
 // BoostSerialContext
 
+void BoostContext::stop()
+{
+  Context::stop();
+  throw StopRequest();
+}
+
 void BoostContext::resume()
 {
   SIMIX_context_set_current(this);
-#if HAVE_BOOST_CONTEXTS == 1
-  boost::context::jump_fcontext(maestro_context_->fc_, this->fc_, (intptr_t) this);
-#else
-  boost::context::jump_fcontext(&maestro_context_->fc_, this->fc_, (intptr_t) this);
-#endif
+  smx_ctx_boost_jump_fcontext(maestro_context_, this);
 }
 
 void BoostSerialContext::suspend()
 {
   /* determine the next context */
-  BoostSerialContext* next_context = nullptr;
-  unsigned long int i              = process_index_;
+  BoostSerialContext* next_context;
+  unsigned long int i = process_index_;
   process_index_++;
 
   if (i < simix_global->process_to_run.size()) {
@@ -201,18 +225,8 @@ void BoostSerialContext::suspend()
     XBT_DEBUG("No more process to run");
     next_context = static_cast<BoostSerialContext*>(maestro_context_);
   }
-  SIMIX_context_set_current((smx_context_t) next_context);
-#if HAVE_BOOST_CONTEXTS == 1
-  boost::context::jump_fcontext(this->fc_, next_context->fc_, (intptr_t) next_context);
-#else
-  boost::context::jump_fcontext(&this->fc_, next_context->fc_, (intptr_t) next_context);
-#endif
-}
-
-void BoostSerialContext::stop()
-{
-  BoostContext::stop();
-  this->suspend();
+  SIMIX_context_set_current(static_cast<smx_context_t>(next_context));
+  smx_ctx_boost_jump_fcontext(this, next_context);
 }
 
 // BoostParallelContext
@@ -228,38 +242,24 @@ void BoostParallelContext::suspend()
     next_context = static_cast<BoostParallelContext*>(next_work.get()->context);
   } else {
     XBT_DEBUG("No more processes to run");
-    uintptr_t worker_id = (uintptr_t)xbt_os_thread_get_specific(worker_id_key_);
+    uintptr_t worker_id = reinterpret_cast<uintptr_t>(xbt_os_thread_get_specific(worker_id_key_));
     next_context = static_cast<BoostParallelContext*>(workers_context_[worker_id]);
   }
 
-  SIMIX_context_set_current(static_cast<smx_context_t> (next_context));
-#if HAVE_BOOST_CONTEXTS == 1
-  boost::context::jump_fcontext(this->fc_, next_context->fc_, (intptr_t)(next_context));
-#else
-  boost::context::jump_fcontext(&this->fc_, next_context->fc_, (intptr_t)(next_context));
-#endif
-}
-
-void BoostParallelContext::stop()
-{
-  BoostContext::stop();
-  this->suspend();
+  SIMIX_context_set_current(static_cast<smx_context_t>(next_context));
+  smx_ctx_boost_jump_fcontext(this, next_context);
 }
 
 void BoostParallelContext::resume()
 {
   uintptr_t worker_id = __sync_fetch_and_add(&threads_working_, 1);
-  xbt_os_thread_set_specific(worker_id_key_, (void*) worker_id);
+  xbt_os_thread_set_specific(worker_id_key_, reinterpret_cast<void*>(worker_id));
 
   BoostParallelContext* worker_context = static_cast<BoostParallelContext*>(SIMIX_context_self());
   workers_context_[worker_id] = worker_context;
 
   SIMIX_context_set_current(this);
-#if HAVE_BOOST_CONTEXTS == 1
-  boost::context::jump_fcontext(worker_context->fc_, this->fc_, (intptr_t) this);
-#else
-  boost::context::jump_fcontext(&worker_context->fc_, this->fc_, (intptr_t) this);
-#endif
+  smx_ctx_boost_jump_fcontext(worker_context, this);
 }
 
 #endif