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

diff --git a/src/kernel/context/ContextBoost.cpp b/src/kernel/context/ContextBoost.cpp
index f39f1d5..3e18362 100644 (file)
--- a/src/kernel/context/ContextBoost.cpp
+++ b/src/kernel/context/ContextBoost.cpp
@@ -14,9 +14,21 @@
 #include <xbt/log.h>
 #include <xbt/xbt_os_thread.h>
 
-#include "src/simix/smx_private.h"
 #include "src/internal_config.h"
 #include "src/kernel/context/ContextBoost.hpp"
+#include "src/simix/smx_private.hpp"
+
+#if HAVE_SANITIZE_ADDRESS_FIBER_SUPPORT
+#include <sanitizer/asan_interface.h>
+#define ASAN_EVAL(expr) (expr)
+#define ASAN_START_SWITCH(fake_stack_save, bottom, size) __sanitizer_start_switch_fiber(fake_stack_save, bottom, size)
+#define ASAN_FINISH_SWITCH(fake_stack_save, bottom_old, size_old)                                                      \
+  __sanitizer_finish_switch_fiber(fake_stack_save, bottom_old, size_old)
+#else
+#define ASAN_EVAL(expr) (void)0
+#define ASAN_START_SWITCH(fake_stack_save, bottom, size) (void)0
+#define ASAN_FINISH_SWITCH(fake_stack_save, bottom_old, size_old) (void)(fake_stack_save)
+#endif
 
 XBT_LOG_EXTERNAL_DEFAULT_CATEGORY(simix_context);
 
@@ -30,7 +42,6 @@ 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 +52,6 @@ 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;
 };
@@ -132,11 +142,19 @@ void BoostContext::smx_ctx_boost_wrapper(BoostContext::ctx_arg_type arg)
 #if BOOST_VERSION < 106100
   BoostContext* context = reinterpret_cast<BoostContext*>(arg);
 #else
+  ASAN_FINISH_SWITCH(nullptr, &static_cast<BoostContext**>(arg.data)[0]->asan_stack_,
+                     &static_cast<BoostContext**>(arg.data)[0]->asan_stack_size_);
   static_cast<BoostContext**>(arg.data)[0]->fc_ = arg.fctx;
   BoostContext* context                         = static_cast<BoostContext**>(arg.data)[1];
 #endif
-  (*context)();
-  context->stop();
+  try {
+    (*context)();
+    context->Context::stop();
+  } catch (StopRequest const&) {
+    XBT_DEBUG("Caught a StopRequest");
+  }
+  ASAN_EVAL(context->asan_stop_ = true);
+  context->suspend();
 }
 
 inline void BoostContext::smx_ctx_boost_jump_fcontext(BoostContext* from, BoostContext* to)
@@ -146,8 +164,12 @@ inline void BoostContext::smx_ctx_boost_jump_fcontext(BoostContext* from, BoostC
 #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);
+  BoostContext* ctx[2] = {from, to};
+  void* fake_stack;
+  ASAN_START_SWITCH(from->asan_stop_ ? nullptr : &fake_stack, to->asan_stack_, to->asan_stack_size_);
+  boost::context::detail::transfer_t arg = boost::context::detail::jump_fcontext(to->fc_, ctx);
+  ASAN_FINISH_SWITCH(fake_stack, &static_cast<BoostContext**>(arg.data)[0]->asan_stack_,
+                     &static_cast<BoostContext**>(arg.data)[0]->asan_stack_size_);
   static_cast<BoostContext**>(arg.data)[0]->fc_ = arg.fctx;
 #endif
 }
@@ -163,10 +185,11 @@ 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
+    ASAN_EVAL(this->asan_stack_ = stack);
 #if BOOST_VERSION < 106100
     this->fc_ = boost::context::make_fcontext(stack, smx_context_usable_stack_size, smx_ctx_boost_wrapper);
 #else
@@ -194,6 +217,12 @@ BoostContext::~BoostContext()
 
 // BoostSerialContext
 
+void BoostContext::stop()
+{
+  Context::stop();
+  throw StopRequest();
+}
+
 void BoostContext::resume()
 {
   SIMIX_context_set_current(this);
@@ -220,12 +249,6 @@ void BoostSerialContext::suspend()
   smx_ctx_boost_jump_fcontext(this, next_context);
 }
 
-void BoostSerialContext::stop()
-{
-  BoostContext::stop();
-  this->suspend();
-}
-
 // BoostParallelContext
 
 #if HAVE_THREAD_CONTEXTS
@@ -247,12 +270,6 @@ 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);