X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/2e149d576acfd464c0b170a52845f3e94dde9d1c..ccf671a80a47f0489c33fb1dc2a8aadfc28b5b88:/src/kernel/context/Context.cpp

diff --git a/src/kernel/context/Context.cpp b/src/kernel/context/Context.cpp
index 6bb6e89c65..9109f6b3c9 100644
--- a/src/kernel/context/Context.cpp
+++ b/src/kernel/context/Context.cpp
@@ -1,4 +1,4 @@
-/* Copyright (c) 2007-2019. The SimGrid Team. All rights reserved.          */
+/* Copyright (c) 2007-2021. 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. */
@@ -11,22 +11,9 @@
 #include "src/simix/smx_private.hpp"
 #include "src/surf/surf_interface.hpp"
 
-XBT_LOG_EXTERNAL_DEFAULT_CATEGORY(simix_context);
+#include <vector>
 
-/**
- * @brief creates a new context for a user level process
- * @param code a main function
- * @param cleanup_func the function to call when the context stops
- * @param simix_process
- */
-smx_context_t SIMIX_context_new(
-  std::function<void()> code,
-  void_pfn_smxprocess_t cleanup_func,
-  smx_actor_t simix_process)
-{
-  return simix_global->context_factory->create_context(
-    std::move(code), cleanup_func, simix_process);
-}
+XBT_LOG_EXTERNAL_DEFAULT_CATEGORY(simix_context);
 
 namespace simgrid {
 namespace kernel {
@@ -36,14 +23,28 @@ ContextFactoryInitializer factory_initializer = nullptr;
 
 ContextFactory::~ContextFactory() = default;
 
-static thread_local smx_context_t smx_current_context = nullptr;
+thread_local Context* Context::current_context_ = nullptr;
+
+#ifndef WIN32
+/* Install or disable alternate signal stack, for SIGSEGV handler. */
+int Context::install_sigsegv_stack(stack_t* old_stack, bool enable)
+{
+  static std::vector<unsigned char> sigsegv_stack(SIGSTKSZ);
+  stack_t stack;
+  stack.ss_sp    = sigsegv_stack.data();
+  stack.ss_size  = sigsegv_stack.size();
+  stack.ss_flags = enable ? 0 : SS_DISABLE;
+  return sigaltstack(&stack, old_stack);
+}
+#endif
+
 Context* Context::self()
 {
-  return smx_current_context;
+  return current_context_;
 }
 void Context::set_current(Context* self)
 {
-  smx_current_context = self;
+  current_context_ = self;
 }
 
 void Context::declare_context(std::size_t size)
@@ -55,20 +56,19 @@ void Context::declare_context(std::size_t size)
 #endif
 }
 
-Context* ContextFactory::attach(void_pfn_smxprocess_t, smx_actor_t)
+Context* ContextFactory::attach(actor::ActorImpl*)
 {
   xbt_die("Cannot attach with this ContextFactory.\n"
     "Try using --cfg=contexts/factory:thread instead.\n");
 }
 
-Context* ContextFactory::create_maestro(std::function<void()>, smx_actor_t)
+Context* ContextFactory::create_maestro(std::function<void()>&&, actor::ActorImpl*)
 {
   xbt_die("Cannot create_maestro with this ContextFactory.\n"
     "Try using --cfg=contexts/factory:thread instead.\n");
 }
 
-Context::Context(std::function<void()> code, void_pfn_smxprocess_t cleanup_func, smx_actor_t actor)
-    : code_(std::move(code)), cleanup_func_(cleanup_func), actor_(actor)
+Context::Context(std::function<void()>&& code, actor::ActorImpl* actor) : code_(std::move(code)), actor_(actor)
 {
   /* If no function was provided, this is the context for maestro
    * and we should set it as the current context */
@@ -84,66 +84,11 @@ Context::~Context()
 
 void Context::stop()
 {
-  actor_->finished_ = true;
-
-  if (actor_->auto_restart_ && actor_->host_->is_off()) {
-    XBT_DEBUG("Insert host %s to watched_hosts because it's off and %s needs to restart", actor_->host_->get_cname(),
-              actor_->get_cname());
-    watched_hosts.insert(actor_->host_->get_cname());
-  }
-
-  actor_->finished_ = true;
-
-  // Execute the termination callbacks
-  simgrid::s4u::Actor::on_destruction(actor_->iface());
-  smx_process_exit_status_t exit_status = (actor_->context_->iwannadie) ? SMX_EXIT_FAILURE : SMX_EXIT_SUCCESS;
-  while (not actor_->on_exit.empty()) {
-    s_smx_process_exit_fun_t exit_fun = actor_->on_exit.back();
-    actor_->on_exit.pop_back();
-    (exit_fun.fun)(exit_status, exit_fun.arg);
-  }
-
-  /* cancel non-blocking activities */
-  for (auto activity : actor_->comms)
-    boost::static_pointer_cast<activity::CommImpl>(activity)->cancel();
-  actor_->comms.clear();
-
-  XBT_DEBUG("%s@%s(%ld) should not run anymore", actor_->get_cname(), actor_->iface()->get_host()->get_cname(),
-            actor_->pid_);
-
-  if (this->cleanup_func_)
-    this->cleanup_func_(this->actor_);
-
-  this->iwannadie = false; // don't let the simcall's yield() do a Context::stop(), because that's me
-  simgrid::simix::simcall([this] { SIMIX_process_cleanup(this->actor_); });
-  this->iwannadie = true;
+  this->actor_->cleanup();
 }
 
 AttachContext::~AttachContext() = default;
 
-StopRequest::~StopRequest() = default;
-
-void StopRequest::do_throw()
-{
-  throw StopRequest();
-}
-
-bool StopRequest::try_n_catch(std::function<void(void)> try_block)
-{
-  bool res;
-  try {
-    try_block();
-    res = true;
-  } catch (StopRequest const&) {
-    XBT_DEBUG("Caught a StopRequest");
-    res = false;
-  }
-  return res;
-}
-}}}
-
-/** @brief Executes all the processes to run (in parallel if possible). */
-void SIMIX_context_runall()
-{
-  simix_global->context_factory->run_all();
-}
+} // namespace context
+} // namespace kernel
+} // namespace simgrid