-/* Copyright (c) 2015-2017. The SimGrid Team. All rights reserved. */
+/* Copyright (c) 2015-2018. 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. */
#include "ContextBoost.hpp"
-
-#include <utility>
-#include <xbt/log.h>
-
-#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
+#include "context_private.hpp"
+#include "simgrid/Exception.hpp"
+#include "src/simix/smx_private.hpp"
XBT_LOG_EXTERNAL_DEFAULT_CATEGORY(simix_context);
BoostContextFactory::BoostContextFactory()
: ContextFactory("BoostContextFactory"), parallel_(SIMIX_context_is_parallel())
{
- BoostContext::setMaestro(nullptr);
- if (parallel_) {
-#if HAVE_THREAD_CONTEXTS
- ParallelBoostContext::parmap_ = nullptr;
- ParallelBoostContext::workers_context_.clear();
- ParallelBoostContext::workers_context_.resize(SIMIX_context_get_nthreads(), nullptr);
- xbt_os_thread_key_create(&ParallelBoostContext::worker_id_key_);
-#else
- xbt_die("No thread support for parallel context execution");
-#endif
- }
+ BoostContext::set_maestro(nullptr);
+ if (parallel_)
+ ParallelBoostContext::initialize();
}
BoostContextFactory::~BoostContextFactory()
{
-#if HAVE_THREAD_CONTEXTS
- delete ParallelBoostContext::parmap_;
- ParallelBoostContext::parmap_ = nullptr;
- ParallelBoostContext::workers_context_.clear();
-#endif
+ if (parallel_)
+ ParallelBoostContext::finalize();
}
smx_context_t BoostContextFactory::create_context(std::function<void()> code, void_pfn_smxprocess_t cleanup_func,
smx_actor_t process)
{
-#if HAVE_THREAD_CONTEXTS
if (parallel_)
return this->new_context<ParallelBoostContext>(std::move(code), cleanup_func, process);
-#endif
-
return this->new_context<SerialBoostContext>(std::move(code), cleanup_func, process);
}
void BoostContextFactory::run_all()
{
-#if HAVE_THREAD_CONTEXTS
- if (parallel_) {
- ParallelBoostContext::threads_working_ = 0;
- if (not ParallelBoostContext::parmap_)
- ParallelBoostContext::parmap_ =
- new simgrid::xbt::Parmap<smx_actor_t>(SIMIX_context_get_nthreads(), SIMIX_context_get_parallel_mode());
- ParallelBoostContext::parmap_->apply(
- [](smx_actor_t process) {
- BoostContext* context = static_cast<BoostContext*>(process->context);
- return context->resume();
- },
- simix_global->process_to_run);
- return;
- }
-#endif
-
- if (simix_global->process_to_run.empty())
- return;
- smx_actor_t first_process = simix_global->process_to_run.front();
- SerialBoostContext::process_index_ = 1;
- /* execute the first process */
- static_cast<BoostContext*>(first_process->context)->resume();
+ if (parallel_)
+ ParallelBoostContext::run_all();
+ else
+ SerialBoostContext::run_all();
}
-
// BoostContext
BoostContext* BoostContext::maestro_context_ = nullptr;
#else
void* stack = this->stack_;
#endif
- ASAN_EVAL(this->asan_stack_ = stack);
+ ASAN_ONLY(this->asan_stack_ = stack);
#if BOOST_VERSION < 106100
this->fc_ = boost::context::make_fcontext(stack, smx_context_usable_stack_size, BoostContext::wrapper);
#else
#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_);
+ BoostContext* context = static_cast<BoostContext**>(arg.data)[1];
+ ASAN_ONLY(xbt_assert(context->asan_ctx_ == static_cast<BoostContext**>(arg.data)[0]));
+ ASAN_FINISH_SWITCH(nullptr, &context->asan_ctx_->asan_stack_, &context->asan_ctx_->asan_stack_size_);
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");
+ } catch (simgrid::Exception const& e) {
+ XBT_INFO("Actor killed by an uncatched exception %s", simgrid::xbt::demangle(typeid(e).name()).get());
+ throw;
}
- ASAN_EVAL(context->asan_stop_ = true);
+ context->Context::stop();
+ ASAN_ONLY(context->asan_stop_ = true);
context->suspend();
}
boost::context::jump_fcontext(&from->fc_, to->fc_, reinterpret_cast<intptr_t>(to));
#else
BoostContext* ctx[2] = {from, to};
- void* fake_stack;
+ ASAN_ONLY(void* fake_stack = nullptr);
+ ASAN_ONLY(to->asan_ctx_ = from);
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_);
+ ASAN_ONLY(xbt_assert(from->asan_ctx_ == static_cast<BoostContext**>(arg.data)[0]));
+ ASAN_FINISH_SWITCH(fake_stack, &from->asan_ctx_->asan_stack_, &from->asan_ctx_->asan_stack_size_);
static_cast<BoostContext**>(arg.data)[0]->fc_ = arg.fctx;
#endif
}
if (i < simix_global->process_to_run.size()) {
/* execute the next process */
XBT_DEBUG("Run next process");
- next_context = static_cast<SerialBoostContext*>(simix_global->process_to_run[i]->context);
+ next_context = static_cast<SerialBoostContext*>(simix_global->process_to_run[i]->context_);
} else {
/* all processes were run, return to maestro */
XBT_DEBUG("No more process to run");
- next_context = static_cast<SerialBoostContext*>(BoostContext::getMaestro());
+ next_context = static_cast<SerialBoostContext*>(BoostContext::get_maestro());
}
- SIMIX_context_set_current(static_cast<smx_context_t>(next_context));
+ Context::set_current(next_context);
BoostContext::swap(this, next_context);
}
void SerialBoostContext::resume()
{
- SIMIX_context_set_current(this);
- BoostContext::swap(BoostContext::getMaestro(), this);
+ BoostContext* old = static_cast<BoostContext*>(self());
+ Context::set_current(this);
+ BoostContext::swap(old, this);
+}
+
+void SerialBoostContext::run_all()
+{
+ if (simix_global->process_to_run.empty())
+ return;
+ smx_actor_t first_process = simix_global->process_to_run.front();
+ process_index_ = 1;
+ /* execute the first process */
+ static_cast<SerialBoostContext*>(first_process->context_)->resume();
}
// ParallelBoostContext
-#if HAVE_THREAD_CONTEXTS
+simgrid::xbt::Parmap<smx_actor_t>* ParallelBoostContext::parmap_;
+std::atomic<uintptr_t> ParallelBoostContext::threads_working_;
+thread_local uintptr_t ParallelBoostContext::worker_id_;
+std::vector<ParallelBoostContext*> ParallelBoostContext::workers_context_;
-simgrid::xbt::Parmap<smx_actor_t>* ParallelBoostContext::parmap_ = nullptr;
-uintptr_t ParallelBoostContext::threads_working_ = 0;
-xbt_os_thread_key_t ParallelBoostContext::worker_id_key_;
-std::vector<BoostContext*> ParallelBoostContext::workers_context_;
+void ParallelBoostContext::initialize()
+{
+ parmap_ = nullptr;
+ workers_context_.clear();
+ workers_context_.resize(SIMIX_context_get_nthreads(), nullptr);
+}
+
+void ParallelBoostContext::finalize()
+{
+ delete parmap_;
+ parmap_ = nullptr;
+ workers_context_.clear();
+}
+
+void ParallelBoostContext::run_all()
+{
+ threads_working_ = 0;
+ if (parmap_ == nullptr)
+ parmap_ = new simgrid::xbt::Parmap<smx_actor_t>(SIMIX_context_get_nthreads(), SIMIX_context_get_parallel_mode());
+ parmap_->apply(
+ [](smx_actor_t process) {
+ ParallelBoostContext* context = static_cast<ParallelBoostContext*>(process->context_);
+ context->resume();
+ },
+ simix_global->process_to_run);
+}
void ParallelBoostContext::suspend()
{
ParallelBoostContext* next_context;
if (next_work) {
XBT_DEBUG("Run next process");
- next_context = static_cast<ParallelBoostContext*>(next_work.get()->context);
+ next_context = static_cast<ParallelBoostContext*>(next_work.get()->context_);
} else {
XBT_DEBUG("No more processes to run");
- uintptr_t worker_id = reinterpret_cast<uintptr_t>(xbt_os_thread_get_specific(worker_id_key_));
- next_context = static_cast<ParallelBoostContext*>(workers_context_[worker_id]);
+ next_context = workers_context_[worker_id_];
}
- SIMIX_context_set_current(static_cast<smx_context_t>(next_context));
+ Context::set_current(next_context);
BoostContext::swap(this, next_context);
}
void ParallelBoostContext::resume()
{
- uintptr_t worker_id = __sync_fetch_and_add(&threads_working_, 1);
- xbt_os_thread_set_specific(worker_id_key_, reinterpret_cast<void*>(worker_id));
+ worker_id_ = threads_working_.fetch_add(1, std::memory_order_relaxed);
- ParallelBoostContext* worker_context = static_cast<ParallelBoostContext*>(SIMIX_context_self());
- workers_context_[worker_id] = worker_context;
+ ParallelBoostContext* worker_context = static_cast<ParallelBoostContext*>(self());
+ workers_context_[worker_id_] = worker_context;
- SIMIX_context_set_current(this);
+ Context::set_current(this);
BoostContext::swap(worker_context, this);
}
-#endif
XBT_PRIVATE ContextFactory* boost_factory()
{
