Align top of stacks to a multiple of 16.

[simgrid.git] / src / kernel / context / ContextBoost.cpp

diff --git a/src/kernel/context/ContextBoost.cpp b/src/kernel/context/ContextBoost.cpp
index fc36369..6c5b2a5 100644 (file)
--- 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);
@@ -127,19 +125,33 @@ void BoostContextFactory::run_all()
 
 // BoostContext
 
-void BoostContext::smx_ctx_boost_wrapper(std::intptr_t arg)
+void BoostContext::smx_ctx_boost_wrapper(BoostContext::ctx_arg_type arg)
 {
+#if BOOST_VERSION < 106100
   BoostContext* context = reinterpret_cast<BoostContext*>(arg);
-  (*context)();
-  context->stop();
+#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));
-#else
+#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
 }
 
@@ -154,14 +166,15 @@ 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 BOOST_VERSION < 105600
     this->fc_ = new boost::context::fcontext_t();
@@ -184,6 +197,12 @@ BoostContext::~BoostContext()
 
 // BoostSerialContext
 
+void BoostContext::stop()
+{
+  Context::stop();
+  throw StopRequest();
+}
+
 void BoostContext::resume()
 {
   SIMIX_context_set_current(this);
@@ -210,12 +229,6 @@ void BoostSerialContext::suspend()
   smx_ctx_boost_jump_fcontext(this, next_context);
 }
 
-void BoostSerialContext::stop()
-{
-  BoostContext::stop();
-  this->suspend();
-}
-
 // BoostParallelContext
 
 #if HAVE_THREAD_CONTEXTS
@@ -237,12 +250,6 @@ void BoostParallelContext::suspend()
   smx_ctx_boost_jump_fcontext(this, next_context);
 }
 
-void BoostParallelContext::stop()
-{
-  BoostContext::stop();
-  this->suspend();
-}
-
 void BoostParallelContext::resume()
 {
   uintptr_t worker_id = __sync_fetch_and_add(&threads_working_, 1);