Files
nearby/cpp/platform/api/submittable_executor.h
T
Alexey Polyudov ae1c427b99 nearby: snapshot of cl/313536507
Signed-off-by: Alexey Polyudov <apolyudov@google.com>
Change-Id: I8936b527079074d5c3af5531b9245063767cc4a7
2020-05-28 00:03:22 -07:00

43 lines
1.3 KiB
C++

#ifndef PLATFORM_API_SUBMITTABLE_EXECUTOR_H_
#define PLATFORM_API_SUBMITTABLE_EXECUTOR_H_
#include <functional>
#include "platform/api/executor.h"
#include "platform/api/future.h"
#include "platform/api/platform.h"
#include "platform/api/settable_future.h"
#include "platform/api/submittable_executor_def.h"
#include "platform/exception.h"
namespace location {
namespace nearby {
// "Common" part of implementation.
// Placed here for textual compatibility to minimize scope of changes.
// Can be (and should be) moved to a separate file outside "api" folder.
// TODO(apolyudov): for API v2.0
template <typename T>
Ptr<Future<T>> SubmittableExecutor::submit(Ptr<Callable<T>> callable) {
using Platform = platform::ImplementationPlatform;
Ptr<SettableFuture<T>> future{Platform::createSettableFuture<T>()};
bool submitted = DoSubmit([callable, future]() {
ExceptionOr<T> result = callable->call();
if (result.ok()) {
future->set(std::move(result.result()));
} else {
future->setException({result.exception()});
}
});
if (!submitted) {
// Raise Exception::kExecution if we are shutting down.
future->setException({Exception::kExecution});
}
return future;
}
} // namespace nearby
} // namespace location
#endif // PLATFORM_API_SUBMITTABLE_EXECUTOR_H_