* under the terms of the license (GNU LGPL) which comes with this package. */
#include "ContextRaw.hpp"
-
+#include "context_private.hpp"
#include "mc/mc.h"
+#include "simgrid/Exception.hpp"
+#include "src/simix/smx_private.hpp"
XBT_LOG_EXTERNAL_DEFAULT_CATEGORY(simix_context);
RawContextFactory::RawContextFactory() : ContextFactory("RawContextFactory"), parallel_(SIMIX_context_is_parallel())
{
- RawContext::setMaestro(nullptr);
+ RawContext::set_maestro(nullptr);
if (parallel_) {
-#if HAVE_THREAD_CONTEXTS
// TODO: choose dynamically when SIMIX_context_get_parallel_threshold() > 1
ParallelRawContext::initialize();
-#else
- xbt_die("You asked for a parallel execution, but you don't have any threads.");
-#endif
}
}
RawContextFactory::~RawContextFactory()
{
-#if HAVE_THREAD_CONTEXTS
if (parallel_)
ParallelRawContext::finalize();
-#endif
}
Context* RawContextFactory::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<ParallelRawContext>(std::move(code), cleanup_func, process);
-#endif
-
return this->new_context<SerialRawContext>(std::move(code), cleanup_func, process);
}
void RawContextFactory::run_all()
{
-#if HAVE_THREAD_CONTEXTS
if (parallel_)
ParallelRawContext::run_all();
else
-#endif
SerialRawContext::run_all();
}
{
if (has_code()) {
this->stack_ = SIMIX_context_stack_new();
+#if PTH_STACKGROWTH == -1
+ ASAN_ONLY(this->asan_stack_ = static_cast<char*>(this->stack_) + smx_context_usable_stack_size);
+#else
+ ASAN_ONLY(this->asan_stack_ = this->stack_);
+#endif
this->stack_top_ = raw_makecontext(this->stack_, smx_context_usable_stack_size, RawContext::wrapper, this);
} else {
if (process != nullptr && maestro_context_ == nullptr)
void RawContext::wrapper(void* arg)
{
RawContext* context = static_cast<RawContext*>(arg);
+ ASAN_FINISH_SWITCH(nullptr, &context->asan_ctx_->asan_stack_, &context->asan_ctx_->asan_stack_size_);
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;
}
+ context->Context::stop();
+
+ ASAN_ONLY(context->asan_stop_ = true);
context->suspend();
}
inline void RawContext::swap(RawContext* from, RawContext* to)
{
+ 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_);
raw_swapcontext(&from->stack_top_, to->stack_top_);
+ ASAN_FINISH_SWITCH(fake_stack, &from->asan_ctx_->asan_stack_, &from->asan_ctx_->asan_stack_size_);
}
void RawContext::stop()
if (i < simix_global->process_to_run.size()) {
/* execute the next process */
XBT_DEBUG("Run next process");
- next_context = static_cast<SerialRawContext*>(simix_global->process_to_run[i]->context);
+ next_context = static_cast<SerialRawContext*>(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<SerialRawContext*>(RawContext::getMaestro());
+ next_context = static_cast<SerialRawContext*>(RawContext::get_maestro());
}
- SIMIX_context_set_current(next_context);
+ Context::set_current(next_context);
RawContext::swap(this, next_context);
}
void SerialRawContext::resume()
{
- SIMIX_context_set_current(this);
- RawContext::swap(RawContext::getMaestro(), this);
+ Context::set_current(this);
+ RawContext::swap(RawContext::get_maestro(), this);
}
void SerialRawContext::run_all()
return;
smx_actor_t first_process = simix_global->process_to_run.front();
process_index_ = 1;
- static_cast<SerialRawContext*>(first_process->context)->resume();
+ static_cast<SerialRawContext*>(first_process->context_)->resume();
}
// ParallelRawContext
-#if HAVE_THREAD_CONTEXTS
-
simgrid::xbt::Parmap<smx_actor_t>* ParallelRawContext::parmap_;
std::atomic<uintptr_t> ParallelRawContext::threads_working_; /* number of threads that have started their work */
-xbt_os_thread_key_t ParallelRawContext::worker_id_key_; /* thread-specific storage for the thread id */
+uintptr_t thread_local ParallelRawContext::worker_id_; /* thread-specific storage for the thread id */
std::vector<ParallelRawContext*> ParallelRawContext::workers_context_; /* space to save the worker context
in each thread */
parmap_ = nullptr;
workers_context_.clear();
workers_context_.resize(SIMIX_context_get_nthreads(), nullptr);
- xbt_os_thread_key_create(&worker_id_key_);
}
void ParallelRawContext::finalize()
delete parmap_;
parmap_ = nullptr;
workers_context_.clear();
- xbt_os_thread_key_destroy(worker_id_key_);
}
void ParallelRawContext::run_all()
parmap_ = new simgrid::xbt::Parmap<smx_actor_t>(SIMIX_context_get_nthreads(), SIMIX_context_get_parallel_mode());
parmap_->apply(
[](smx_actor_t process) {
- ParallelRawContext* context = static_cast<ParallelRawContext*>(process->context);
+ ParallelRawContext* context = static_cast<ParallelRawContext*>(process->context_);
context->resume();
},
simix_global->process_to_run);
if (next_work) {
/* there is a next process to resume */
XBT_DEBUG("Run next process");
- next_context = static_cast<ParallelRawContext*>(next_work.get()->context);
+ next_context = static_cast<ParallelRawContext*>(next_work.get()->context_);
} else {
/* all processes were run, go to the barrier */
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 = workers_context_[worker_id];
- XBT_DEBUG("Restoring worker stack %zu (working threads = %zu)", worker_id, threads_working_.load());
+ next_context = workers_context_[worker_id_];
+ XBT_DEBUG("Restoring worker stack %zu (working threads = %zu)", worker_id_, threads_working_.load());
}
- SIMIX_context_set_current(next_context);
+ Context::set_current(next_context);
RawContext::swap(this, next_context);
}
void ParallelRawContext::resume()
{
- uintptr_t worker_id = threads_working_.fetch_add(1, std::memory_order_relaxed);
- xbt_os_thread_set_specific(worker_id_key_, reinterpret_cast<void*>(worker_id));
- ParallelRawContext* worker_context = static_cast<ParallelRawContext*>(SIMIX_context_self());
- workers_context_[worker_id] = worker_context;
- XBT_DEBUG("Saving worker stack %zu", worker_id);
- SIMIX_context_set_current(this);
+ worker_id_ = threads_working_.fetch_add(1, std::memory_order_relaxed);
+ ParallelRawContext* worker_context = static_cast<ParallelRawContext*>(self());
+ workers_context_[worker_id_] = worker_context;
+ XBT_DEBUG("Saving worker stack %zu", worker_id_);
+ Context::set_current(this);
RawContext::swap(worker_context, this);
}
-#endif
-
ContextFactory* raw_factory()
{
XBT_VERB("Using raw contexts. Because the glibc is just not good enough for us.");
