/* SimGrid's pthread interposer. Actual implementation of the symbols (see the comment in sthread.h) */
+#include "simgrid/s4u/Barrier.hpp"
+#include "simgrid/s4u/ConditionVariable.hpp"
#include "smpi/smpi.h"
+#include "xbt/asserts.h"
+#include "xbt/ex.h"
+#include "xbt/log.h"
#include "xbt/string.hpp"
#include <simgrid/actor.h>
#include <simgrid/s4u/Actor.hpp>
{
/* Do not intercept the main when run from SMPI: it will initialize the simulation properly */
for (int i = 0; envp[i] != nullptr; i++)
- if (std::string_view(envp[i]).rfind("SMPI_GLOBAL_SIZE", 0) == 0)
+ if (std::string_view(envp[i]).rfind("SMPI_GLOBAL_SIZE", 0) == 0) {
+ printf("sthread refuses to intercept the SMPI application %s directly, as its interception is done otherwise.\n",
+ argv[0]);
return raw_main(argc, argv, envp);
+ }
- /* If not in SMPI, the old main becomes an actor in a newly created simulation */
- std::ostringstream id;
- id << std::this_thread::get_id();
+ /* Do not intercept valgrind step 1 */
+ if (not strcmp(argv[0], "/usr/bin/valgrind.bin") || not strcmp(argv[0], "/bin/sh")|| not strcmp(argv[0], "/bin/bash")|| not strcmp(argv[0], "gdb")) {
+ printf("sthread refuses to intercept the execution of %s. Running the application unmodified.\n", argv[0]);
+ fflush(stdout);
+ return raw_main(argc, argv, envp);
+ }
- XBT_DEBUG("sthread main() is starting in thread %s", id.str().c_str());
+ /* If not in SMPI, the old main becomes an actor in a newly created simulation */
+ printf("sthread is intercepting the execution of %s\n", argv[0]);
+ fflush(stdout);
sg4::Engine e(&argc, argv);
auto* zone = sg4::create_full_zone("world");
sthread_enable();
sg4::ActorPtr main_actor = sg4::Actor::create("main thread", lilibeth, raw_main, argc, argv, envp);
- XBT_INFO("Starting the simulation.");
sg4::Engine::get_instance()->run();
sthread_disable();
XBT_INFO("All threads exited. Terminating the simulation.");
static int TID = 0;
TID++;
XBT_VERB("Create thread %d", TID);
- int rank = 0;
+ std::string name = std::string("thread ") + std::to_string(TID);
#if HAVE_SMPI
- if (SMPI_is_inited())
+ if (SMPI_is_inited()) {
+ int rank = 0;
MPI_Comm_rank(MPI_COMM_WORLD, &rank);
+ name = simgrid::xbt::string_printf("%d:%d", rank, TID);
+ }
#endif
- std::string name = simgrid::xbt::string_printf("%d:%d", rank, TID);
sg4::ActorPtr actor = sg4::Actor::create(
name, lilibeth,
[](auto* user_function, auto* param) {
return 0;
}
-int sthread_mutex_init(sthread_mutex_t* mutex, const void* /*pthread_mutexattr_t* attr*/)
+int sthread_mutexattr_init(sthread_mutexattr_t* attr)
+{
+ memset(attr, 0, sizeof(*attr));
+ return 0;
+}
+int sthread_mutexattr_settype(sthread_mutexattr_t* attr, int type)
+{
+ switch (type) {
+ case PTHREAD_MUTEX_NORMAL:
+ xbt_assert(not attr->recursive, "S4U does not allow to remove the recursivness of a mutex.");
+ attr->recursive = 0;
+ break;
+ case PTHREAD_MUTEX_RECURSIVE:
+ attr->recursive = 1;
+ attr->errorcheck = 0; // reset
+ break;
+ case PTHREAD_MUTEX_ERRORCHECK:
+ attr->errorcheck = 1;
+ THROW_UNIMPLEMENTED;
+ break;
+ default:
+ THROW_IMPOSSIBLE;
+ }
+ return 0;
+}
+int sthread_mutexattr_gettype(const sthread_mutexattr_t* attr, int* type)
+{
+ if (attr->recursive)
+ *type = PTHREAD_MUTEX_RECURSIVE;
+ else if (attr->errorcheck)
+ *type = PTHREAD_MUTEX_ERRORCHECK;
+ else
+ *type = PTHREAD_MUTEX_NORMAL;
+ return 0;
+}
+int sthread_mutexattr_getrobust(const sthread_mutexattr_t* attr, int* robustness)
{
- auto m = sg4::Mutex::create();
+ *robustness = attr->robust;
+ return 0;
+}
+int sthread_mutexattr_setrobust(sthread_mutexattr_t* attr, int robustness)
+{
+ attr->robust = robustness;
+ if (robustness)
+ THROW_UNIMPLEMENTED;
+ return 0;
+}
+
+int sthread_mutex_init(sthread_mutex_t* mutex, const sthread_mutexattr_t* attr)
+{
+ auto m = sg4::Mutex::create(attr != nullptr && attr->recursive);
intrusive_ptr_add_ref(m.get());
mutex->mutex = m.get();
if (mutex->mutex == nullptr)
sthread_mutex_init(mutex, nullptr);
+ XBT_DEBUG("%s(%p)", __func__, mutex);
static_cast<sg4::Mutex*>(mutex->mutex)->lock();
return 0;
}
if (mutex->mutex == nullptr)
sthread_mutex_init(mutex, nullptr);
- return static_cast<sg4::Mutex*>(mutex->mutex)->try_lock();
+ XBT_DEBUG("%s(%p)", __func__, mutex);
+ if (static_cast<sg4::Mutex*>(mutex->mutex)->try_lock())
+ return 0;
+ return EBUSY;
}
int sthread_mutex_unlock(sthread_mutex_t* mutex)
if (mutex->mutex == nullptr)
sthread_mutex_init(mutex, nullptr);
+ XBT_DEBUG("%s(%p)", __func__, mutex);
static_cast<sg4::Mutex*>(mutex->mutex)->unlock();
return 0;
}
if (mutex->mutex == nullptr)
sthread_mutex_init(mutex, nullptr);
+ XBT_DEBUG("%s(%p)", __func__, mutex);
intrusive_ptr_release(static_cast<sg4::Mutex*>(mutex->mutex));
return 0;
}
+
+int sthread_barrier_init(sthread_barrier_t* barrier, const sthread_barrierattr_t* attr, unsigned count){
+ auto b = sg4::Barrier::create(count);
+ intrusive_ptr_add_ref(b.get());
+
+ barrier->barrier = b.get();
+ return 0;
+}
+int sthread_barrier_wait(sthread_barrier_t* barrier){
+ XBT_DEBUG("%s(%p)", __func__, barrier);
+ static_cast<sg4::Barrier*>(barrier->barrier)->wait();
+ return 0;
+}
+int sthread_barrier_destroy(sthread_barrier_t* barrier){
+ XBT_DEBUG("%s(%p)", __func__, barrier);
+ intrusive_ptr_release(static_cast<sg4::Barrier*>(barrier->barrier));
+ return 0;
+}
+
+int sthread_cond_init(sthread_cond_t* cond, sthread_condattr_t* attr)
+{
+ auto cv = sg4::ConditionVariable::create();
+ intrusive_ptr_add_ref(cv.get());
+
+ cond->cond = cv.get();
+ return 0;
+}
+int sthread_cond_signal(sthread_cond_t* cond)
+{
+ XBT_DEBUG("%s(%p)", __func__, cond);
+ static_cast<sg4::ConditionVariable*>(cond->cond)->notify_one();
+ return 0;
+}
+int sthread_cond_broadcast(sthread_cond_t* cond)
+{
+ XBT_DEBUG("%s(%p)", __func__, cond);
+ static_cast<sg4::ConditionVariable*>(cond->cond)->notify_all();
+ return 0;
+}
+int sthread_cond_wait(sthread_cond_t* cond, sthread_mutex_t* mutex)
+{
+ XBT_DEBUG("%s(%p)", __func__, cond);
+ static_cast<sg4::ConditionVariable*>(cond->cond)->wait(static_cast<sg4::Mutex*>(mutex->mutex));
+ return 0;
+}
+int sthread_cond_destroy(sthread_cond_t* cond)
+{
+ XBT_DEBUG("%s(%p)", __func__, cond);
+ intrusive_ptr_release(static_cast<sg4::ConditionVariable*>(cond->cond));
+ return 0;
+}
+
int sthread_sem_init(sthread_sem_t* sem, int /*pshared*/, unsigned int value)
{
auto s = sg4::Semaphore::create(value);
return 0;
}
-void sthread_sleep(double seconds)
+unsigned int sthread_sleep(double seconds)
+{
+ XBT_DEBUG("sleep(%lf)", seconds);
+ simgrid::s4u::this_actor::sleep_for(seconds);
+ return 0;
+}
+int sthread_usleep(double seconds)
{
+ XBT_DEBUG("sleep(%lf)", seconds);
simgrid::s4u::this_actor::sleep_for(seconds);
+ return 0;
}
#if 0
