#ifndef SIMGRID_SIMIX_BLOCKING_SIMCALL_HPP
#define SIMGRID_SIMIX_BLOCKING_SIMCALL_HPP
-#include <iostream>
-
#include <exception>
+#include <functional>
+#include <future>
+#include <utility>
#include <xbt/sysdep.h>
-#include <future>
-
#include <xbt/future.hpp>
#include <simgrid/kernel/future.hpp>
#include <simgrid/simix.h>
simcall_run_blocking([&result, self, &code]{
try {
auto future = code();
- future.then([&result, self](simgrid::kernel::Future<T> value) {
+ future.then_([&result, self](simgrid::kernel::Future<T> value) {
simgrid::xbt::setPromise(result, value);
simgrid::simix::unblock(self);
});
}
/** A blocking (`wait()`-based) future for SIMIX processes */
+// TODO, .wait_for()
+// TODO, .wait_until()
+// TODO, SharedFuture
+// TODO, simgrid::simix::when_all - wait for all future to be ready (this one is simple!)
+// TODO, simgrid::simix::when_any - wait for any future to be ready
template <class T>
class Future {
public:
simcall_run_blocking([this, &result, self]{
try {
// When the kernel future is ready...
- this->future_.then([this, &result, self](simgrid::kernel::Future<T> value) {
+ this->future_.then_([this, &result, self](simgrid::kernel::Future<T> value) {
// ... wake up the process with the result of the kernel future.
simgrid::xbt::setPromise(result, value);
simgrid::simix::unblock(self);
});
return result.get();
}
- // TODO, wait()
- // TODO, wait_for()
- // TODO, wait_until()
+ bool is_ready() const
+ {
+ if (!valid())
+ throw std::future_error(std::future_errc::no_state);
+ return future_.is_ready();
+ }
+ void wait()
+ {
+ // The future is ready! We don't have to wait:
+ if (this->is_ready())
+ return;
+ // The future is not ready. We have to delegate to the SimGrid kernel:
+ std::exception_ptr exception;
+ smx_process_t self = SIMIX_process_self();
+ simcall_run_blocking([this, &exception, self]{
+ try {
+ // When the kernel future is ready...
+ this->future_.then_([this, self](simgrid::kernel::Future<T> value) {
+ // ...store it the simix kernel and wake up.
+ this->future_ = std::move(value);
+ simgrid::simix::unblock(self);
+ });
+ }
+ catch (...) {
+ exception = std::current_exception();
+ simgrid::simix::unblock(self);
+ }
+ });
+ }
private:
// We wrap an event-based kernel future:
simgrid::kernel::Future<T> future_;