From d509dd175e358ed71fd0ef4337539ac460f2d2aa Mon Sep 17 00:00:00 2001
From: Gabriel Corona <gabriel.corona@loria.fr>
Date: Thu, 18 Jun 2015 16:14:15 +0200
Subject: [PATCH] Add support for new Boost.Context API

---
 buildtools/Cmake/CompleteInFiles.cmake |  6 +++---
 src/simix/smx_context_boost.cpp        | 28 ++++++++++++++++++++++++++
 2 files changed, 31 insertions(+), 3 deletions(-)

diff --git a/buildtools/Cmake/CompleteInFiles.cmake b/buildtools/Cmake/CompleteInFiles.cmake
index abd7e8907a..456f61097c 100644
--- a/buildtools/Cmake/CompleteInFiles.cmake
+++ b/buildtools/Cmake/CompleteInFiles.cmake
@@ -123,11 +123,11 @@ endif()
 if(Boost_FOUND AND Boost_CONTEXT_FOUND)
   # We should use feature detection for this instead:
   if (Boost_VERSION LESS 105600)
-    message("Found suitable Boost.Context")
+    message("Found Boost.Context API v1")
     set(HAVE_BOOST_CONTEXT 1)
   else()
-    message("Found unsuitable version of Boost.Context (${Boost_VERSION}, up to 1.55 is currenly implemented)")
-    set(HAVE_BOOST_CONTEXT 0)
+    message("Found Boost.Context API v2")
+    set(HAVE_BOOST_CONTEXT 2)
   endif()
 else()
   set(HAVE_BOOST_CONTEXT 0)
diff --git a/src/simix/smx_context_boost.cpp b/src/simix/smx_context_boost.cpp
index 71d34f1872..1ddf0809ee 100644
--- a/src/simix/smx_context_boost.cpp
+++ b/src/simix/smx_context_boost.cpp
@@ -18,7 +18,11 @@ XBT_LOG_EXTERNAL_DEFAULT_CATEGORY(simix_context);
 
 typedef struct s_smx_ctx_boost {
   s_smx_ctx_base_t super;       /* Fields of super implementation */
+#if HAVE_BOOST_CONTEXT == 1
   boost::context::fcontext_t* fc;
+#else
+  boost::context::fcontext_t fc;
+#endif
   void* stack;
 } s_smx_ctx_boost_t, *smx_ctx_boost_t;
 
@@ -130,7 +134,9 @@ smx_ctx_boost_create_context(xbt_main_func_t code, int argc, char **argv,
                       smx_ctx_boost_wrapper);
   } else {
     context->stack = nullptr;
+#if HAVE_BOOST_CONTEXT == 1
     context->fc = new boost::context::fcontext_t();
+#endif
     if (boost_maestro_context == nullptr)
       boost_maestro_context = context;
   }
@@ -143,8 +149,10 @@ static void smx_ctx_boost_free(smx_context_t c)
   smx_ctx_boost_t context = (smx_ctx_boost_t) c;
   if (!context)
     return;
+#if HAVE_BOOST_CONTEXT == 1
   if (!context->stack)
     delete context->fc;
+#endif
   if ((smx_ctx_boost_t) c == boost_maestro_context)
     boost_maestro_context = nullptr;
   SIMIX_context_stack_delete(context->stack);
@@ -182,16 +190,26 @@ static void smx_ctx_boost_suspend_serial(smx_context_t context)
     next_context = (smx_ctx_boost_t) boost_maestro_context;
   }
   SIMIX_context_set_current((smx_context_t) next_context);
+#if HAVE_BOOST_CONTEXT == 1
   boost::context::jump_fcontext(
     ((smx_ctx_boost_t)context)->fc, next_context->fc, (intptr_t)next_context);
+#else
+  boost::context::jump_fcontext(
+    &((smx_ctx_boost_t)context)->fc, next_context->fc, (intptr_t)next_context);
+#endif
 }
 
 static void smx_ctx_boost_resume_serial(smx_process_t first_process)
 {
   smx_ctx_boost_t context = (smx_ctx_boost_t) first_process->context;
   SIMIX_context_set_current((smx_context_t) context);
+#if HAVE_BOOST_CONTEXT == 1
   boost::context::jump_fcontext(boost_maestro_context->fc, context->fc,
     (intptr_t)context);
+#else
+  boost::context::jump_fcontext(&boost_maestro_context->fc, context->fc,
+    (intptr_t)context);
+#endif
 }
 
 static void smx_ctx_boost_runall_serial(void)
@@ -231,8 +249,13 @@ static void smx_ctx_boost_suspend_parallel(smx_context_t context)
   }
 
   SIMIX_context_set_current((smx_context_t) next_context);
+#if HAVE_BOOST_CONTEXT == 1
   boost::context::jump_fcontext(
     ((smx_ctx_boost_t)context)->fc, next_context->fc, (intptr_t)next_context);
+#else
+  boost::context::jump_fcontext(
+    &((smx_ctx_boost_t)context)->fc, next_context->fc, (intptr_t)next_context);
+#endif
 }
 
 static void smx_ctx_boost_resume_parallel(smx_process_t process)
@@ -245,8 +268,13 @@ static void smx_ctx_boost_resume_parallel(smx_process_t process)
   smx_ctx_boost_t context = (smx_ctx_boost_t) process->context;
 
   SIMIX_context_set_current((smx_context_t) context);
+#if HAVE_BOOST_CONTEXT == 1
   boost::context::jump_fcontext(worker_context->fc, context->fc,
     (intptr_t)context);
+#else
+  boost::context::jump_fcontext(&worker_context->fc, context->fc,
+    (intptr_t)context);
+#endif
 }
 
 static void smx_ctx_boost_runall_parallel(void)
-- 
2.20.1