| // Copyright 2018 The Fuchsia Authors |
| // |
| // Use of this source code is governed by a MIT-style |
| // license that can be found in the LICENSE file or at |
| // https://opensource.org/licenses/MIT |
| |
| #include <object/suspend_token_dispatcher.h> |
| |
| #include <err.h> |
| |
| #include <kernel/auto_lock.h> |
| #include <object/thread_dispatcher.h> |
| #include <zircon/rights.h> |
| #include <fbl/alloc_checker.h> |
| |
| zx_status_t SuspendTokenDispatcher::Create(fbl::RefPtr<ThreadDispatcher> thread, |
| fbl::RefPtr<Dispatcher>* dispatcher, |
| zx_rights_t* rights) { |
| zx_status_t status = thread->Suspend(); |
| if (status != ZX_OK) |
| return ZX_ERR_BAD_STATE; |
| |
| fbl::AllocChecker ac; |
| fbl::unique_ptr<SuspendTokenDispatcher> disp( |
| new (&ac) SuspendTokenDispatcher(fbl::move(thread))); |
| if (!ac.check()) |
| return ZX_ERR_NO_MEMORY; |
| |
| *rights = ZX_DEFAULT_SUSPEND_TOKEN_RIGHTS; |
| *dispatcher = fbl::AdoptRef<Dispatcher>(disp.release()); |
| return ZX_OK; |
| } |
| |
| SuspendTokenDispatcher::SuspendTokenDispatcher(fbl::RefPtr<ThreadDispatcher> thread) |
| : thread_(fbl::move(thread)) {} |
| |
| SuspendTokenDispatcher::~SuspendTokenDispatcher() {} |
| |
| void SuspendTokenDispatcher::on_zero_handles() { |
| thread_->Resume(); |
| } |