X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/cd1ef5df3b8b8acea61715623c25ac3cd12caf33..39c935d6d5ee86d153f6f7e6a10d723ae7c57f6f:/src/kernel/context/Context.cpp

diff --git a/src/kernel/context/Context.cpp b/src/kernel/context/Context.cpp
index 886b2011a7..dbd49f793e 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. */
@@ -11,8 +11,9 @@
 #include "src/simix/smx_private.hpp"
 #include "src/surf/surf_interface.hpp"
 
-XBT_LOG_EXTERNAL_DEFAULT_CATEGORY(simix_context);
+#include <array>
 
+XBT_LOG_EXTERNAL_DEFAULT_CATEGORY(simix_context);
 
 namespace simgrid {
 namespace kernel {
@@ -22,14 +23,28 @@ ContextFactoryInitializer factory_initializer = nullptr;
 
 ContextFactory::~ContextFactory() = default;
 
-static thread_local Context* 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::array<unsigned char, SIGSTKSZ> sigsegv_stack;
+  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)