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auto merge of #8723 : anasazi/rust/temporary-unkillable-io, r=brson
Also added a home_for_io_with_sched variant to consolidate some cases. This is a temporary step to resolving #8674.
This commit is contained in:
bors
commit
05f1bbba16
@ -35,6 +35,7 @@ use libc::{lseek, off_t, O_CREAT, O_APPEND, O_TRUNC, O_RDWR, O_RDONLY, O_WRONLY,
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S_IRUSR, S_IWUSR};
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use rt::io::{FileMode, FileAccess, OpenOrCreate, Open, Create,
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CreateOrTruncate, Append, Truncate, Read, Write, ReadWrite};
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use task;
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#[cfg(test)] use container::Container;
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#[cfg(test)] use unstable::run_in_bare_thread;
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@ -55,30 +56,68 @@ trait HomingIO {
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// go home
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let old_home = Cell::new_empty();
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let old_home_ptr = &old_home;
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let scheduler = Local::take::<Scheduler>();
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do scheduler.deschedule_running_task_and_then |_, task| {
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// get the old home first
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do task.wake().map_move |mut task| {
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old_home_ptr.put_back(task.take_unwrap_home());
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self.home().send(PinnedTask(task));
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};
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do task::unkillable { // FIXME(#8674)
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let scheduler = Local::take::<Scheduler>();
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do scheduler.deschedule_running_task_and_then |_, task| {
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// get the old home first
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do task.wake().map_move |mut task| {
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old_home_ptr.put_back(task.take_unwrap_home());
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self.home().send(PinnedTask(task));
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};
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}
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}
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// do IO
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let a = io(self);
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// unhome home
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let scheduler = Local::take::<Scheduler>();
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do scheduler.deschedule_running_task_and_then |scheduler, task| {
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do task.wake().map_move |mut task| {
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task.give_home(old_home.take());
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scheduler.make_handle().send(TaskFromFriend(task));
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};
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do task::unkillable { // FIXME(#8674)
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let scheduler = Local::take::<Scheduler>();
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do scheduler.deschedule_running_task_and_then |scheduler, task| {
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do task.wake().map_move |mut task| {
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task.give_home(old_home.take());
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scheduler.make_handle().send(TaskFromFriend(task));
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};
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}
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}
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// return the result of the IO
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a
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}
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fn home_for_io_with_sched<A>(&mut self, io_sched: &fn(&mut Self, ~Scheduler) -> A) -> A {
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use rt::sched::{PinnedTask, TaskFromFriend};
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do task::unkillable { // FIXME(#8674)
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// go home
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let old_home = Cell::new_empty();
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let old_home_ptr = &old_home;
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let scheduler = Local::take::<Scheduler>();
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do scheduler.deschedule_running_task_and_then |_, task| {
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// get the old home first
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do task.wake().map_move |mut task| {
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old_home_ptr.put_back(task.take_unwrap_home());
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self.home().send(PinnedTask(task));
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};
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}
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// do IO
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let scheduler = Local::take::<Scheduler>();
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let a = io_sched(self, scheduler);
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// unhome home
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let scheduler = Local::take::<Scheduler>();
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do scheduler.deschedule_running_task_and_then |scheduler, task| {
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do task.wake().map_move |mut task| {
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task.give_home(old_home.take());
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scheduler.make_handle().send(TaskFromFriend(task));
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};
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}
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// return the result of the IO
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a
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}
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}
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}
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// get a handle for the current scheduler
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@ -376,35 +415,37 @@ impl IoFactory for UvIoFactory {
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let result_cell_ptr: *Cell<Result<~RtioTcpStreamObject, IoError>> = &result_cell;
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// Block this task and take ownership, switch to scheduler context
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let scheduler = Local::take::<Scheduler>();
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do scheduler.deschedule_running_task_and_then |_, task| {
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do task::unkillable { // FIXME(#8674)
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let scheduler = Local::take::<Scheduler>();
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do scheduler.deschedule_running_task_and_then |_, task| {
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let mut tcp = TcpWatcher::new(self.uv_loop());
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let task_cell = Cell::new(task);
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let mut tcp = TcpWatcher::new(self.uv_loop());
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let task_cell = Cell::new(task);
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// Wait for a connection
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do tcp.connect(addr) |stream, status| {
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match status {
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None => {
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let tcp = NativeHandle::from_native_handle(stream.native_handle());
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let home = get_handle_to_current_scheduler!();
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let res = Ok(~UvTcpStream { watcher: tcp, home: home });
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// Wait for a connection
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do tcp.connect(addr) |stream, status| {
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match status {
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None => {
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let tcp = NativeHandle::from_native_handle(stream.native_handle());
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let home = get_handle_to_current_scheduler!();
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let res = Ok(~UvTcpStream { watcher: tcp, home: home });
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// Store the stream in the task's stack
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unsafe { (*result_cell_ptr).put_back(res); }
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// Context switch
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let scheduler = Local::take::<Scheduler>();
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scheduler.resume_blocked_task_immediately(task_cell.take());
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}
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Some(_) => {
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let task_cell = Cell::new(task_cell.take());
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do stream.close {
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let res = Err(uv_error_to_io_error(status.unwrap()));
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// Store the stream in the task's stack
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unsafe { (*result_cell_ptr).put_back(res); }
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// Context switch
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let scheduler = Local::take::<Scheduler>();
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scheduler.resume_blocked_task_immediately(task_cell.take());
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}
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Some(_) => {
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let task_cell = Cell::new(task_cell.take());
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do stream.close {
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let res = Err(uv_error_to_io_error(status.unwrap()));
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unsafe { (*result_cell_ptr).put_back(res); }
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let scheduler = Local::take::<Scheduler>();
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scheduler.resume_blocked_task_immediately(task_cell.take());
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}
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}
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}
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}
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}
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@ -422,15 +463,17 @@ impl IoFactory for UvIoFactory {
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Ok(~UvTcpListener::new(watcher, home))
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}
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Err(uverr) => {
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let scheduler = Local::take::<Scheduler>();
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do scheduler.deschedule_running_task_and_then |_, task| {
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let task_cell = Cell::new(task);
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do watcher.as_stream().close {
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let scheduler = Local::take::<Scheduler>();
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scheduler.resume_blocked_task_immediately(task_cell.take());
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do task::unkillable { // FIXME(#8674)
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let scheduler = Local::take::<Scheduler>();
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do scheduler.deschedule_running_task_and_then |_, task| {
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let task_cell = Cell::new(task);
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do watcher.as_stream().close {
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let scheduler = Local::take::<Scheduler>();
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scheduler.resume_blocked_task_immediately(task_cell.take());
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}
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}
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Err(uv_error_to_io_error(uverr))
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}
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Err(uv_error_to_io_error(uverr))
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}
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}
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}
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@ -443,15 +486,17 @@ impl IoFactory for UvIoFactory {
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Ok(~UvUdpSocket { watcher: watcher, home: home })
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}
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Err(uverr) => {
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let scheduler = Local::take::<Scheduler>();
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do scheduler.deschedule_running_task_and_then |_, task| {
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let task_cell = Cell::new(task);
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do watcher.close {
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let scheduler = Local::take::<Scheduler>();
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scheduler.resume_blocked_task_immediately(task_cell.take());
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do task::unkillable { // FIXME(#8674)
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let scheduler = Local::take::<Scheduler>();
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do scheduler.deschedule_running_task_and_then |_, task| {
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let task_cell = Cell::new(task);
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do watcher.close {
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let scheduler = Local::take::<Scheduler>();
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scheduler.resume_blocked_task_immediately(task_cell.take());
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}
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}
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Err(uv_error_to_io_error(uverr))
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}
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Err(uv_error_to_io_error(uverr))
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}
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}
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}
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@ -493,30 +538,32 @@ impl IoFactory for UvIoFactory {
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let result_cell_ptr: *Cell<Result<~RtioFileStream,
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IoError>> = &result_cell;
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let path_cell = Cell::new(path);
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let scheduler = Local::take::<Scheduler>();
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do scheduler.deschedule_running_task_and_then |_, task| {
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let task_cell = Cell::new(task);
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let path = path_cell.take();
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do file::FsRequest::open(self.uv_loop(), path, flags as int, create_mode as int)
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|req,err| {
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if err.is_none() {
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let loop_ = Loop {handle: req.get_loop().native_handle()};
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let home = get_handle_to_current_scheduler!();
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let fd = file::FileDescriptor(req.get_result());
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let fs = ~UvFileStream::new(
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loop_, fd, true, home) as ~RtioFileStream;
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let res = Ok(fs);
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unsafe { (*result_cell_ptr).put_back(res); }
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let scheduler = Local::take::<Scheduler>();
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scheduler.resume_blocked_task_immediately(task_cell.take());
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} else {
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let res = Err(uv_error_to_io_error(err.unwrap()));
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unsafe { (*result_cell_ptr).put_back(res); }
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let scheduler = Local::take::<Scheduler>();
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scheduler.resume_blocked_task_immediately(task_cell.take());
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}
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do task::unkillable { // FIXME(#8674)
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let scheduler = Local::take::<Scheduler>();
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do scheduler.deschedule_running_task_and_then |_, task| {
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let task_cell = Cell::new(task);
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let path = path_cell.take();
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do file::FsRequest::open(self.uv_loop(), path, flags as int, create_mode as int)
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|req,err| {
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if err.is_none() {
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let loop_ = Loop {handle: req.get_loop().native_handle()};
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let home = get_handle_to_current_scheduler!();
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let fd = file::FileDescriptor(req.get_result());
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let fs = ~UvFileStream::new(
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loop_, fd, true, home) as ~RtioFileStream;
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let res = Ok(fs);
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unsafe { (*result_cell_ptr).put_back(res); }
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let scheduler = Local::take::<Scheduler>();
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scheduler.resume_blocked_task_immediately(task_cell.take());
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} else {
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let res = Err(uv_error_to_io_error(err.unwrap()));
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unsafe { (*result_cell_ptr).put_back(res); }
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let scheduler = Local::take::<Scheduler>();
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scheduler.resume_blocked_task_immediately(task_cell.take());
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}
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};
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};
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};
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}
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assert!(!result_cell.is_empty());
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return result_cell.take();
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}
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@ -525,20 +572,22 @@ impl IoFactory for UvIoFactory {
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let result_cell = Cell::new_empty();
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let result_cell_ptr: *Cell<Result<(), IoError>> = &result_cell;
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let path_cell = Cell::new(path);
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let scheduler = Local::take::<Scheduler>();
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do scheduler.deschedule_running_task_and_then |_, task| {
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let task_cell = Cell::new(task);
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let path = path_cell.take();
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do file::FsRequest::unlink(self.uv_loop(), path) |_, err| {
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let res = match err {
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None => Ok(()),
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Some(err) => Err(uv_error_to_io_error(err))
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do task::unkillable { // FIXME(#8674)
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let scheduler = Local::take::<Scheduler>();
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do scheduler.deschedule_running_task_and_then |_, task| {
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let task_cell = Cell::new(task);
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let path = path_cell.take();
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do file::FsRequest::unlink(self.uv_loop(), path) |_, err| {
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let res = match err {
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None => Ok(()),
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Some(err) => Err(uv_error_to_io_error(err))
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};
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unsafe { (*result_cell_ptr).put_back(res); }
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let scheduler = Local::take::<Scheduler>();
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scheduler.resume_blocked_task_immediately(task_cell.take());
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};
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unsafe { (*result_cell_ptr).put_back(res); }
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let scheduler = Local::take::<Scheduler>();
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scheduler.resume_blocked_task_immediately(task_cell.take());
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};
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};
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}
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assert!(!result_cell.is_empty());
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return result_cell.take();
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}
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@ -572,8 +621,7 @@ impl Drop for UvTcpListener {
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fn drop(&self) {
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// XXX need mutable finalizer
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let self_ = unsafe { transmute::<&UvTcpListener, &mut UvTcpListener>(self) };
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do self_.home_for_io |self_| {
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let scheduler = Local::take::<Scheduler>();
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do self_.home_for_io_with_sched |self_, scheduler| {
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do scheduler.deschedule_running_task_and_then |_, task| {
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let task_cell = Cell::new(task);
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do self_.watcher().as_stream().close {
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@ -665,8 +713,7 @@ impl Drop for UvTcpStream {
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fn drop(&self) {
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// XXX need mutable finalizer
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let this = unsafe { transmute::<&UvTcpStream, &mut UvTcpStream>(self) };
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do this.home_for_io |self_| {
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let scheduler = Local::take::<Scheduler>();
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do this.home_for_io_with_sched |self_, scheduler| {
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do scheduler.deschedule_running_task_and_then |_, task| {
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let task_cell = Cell::new(task);
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do self_.watcher.as_stream().close {
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@ -688,11 +735,10 @@ impl RtioSocket for UvTcpStream {
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impl RtioTcpStream for UvTcpStream {
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fn read(&mut self, buf: &mut [u8]) -> Result<uint, IoError> {
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do self.home_for_io |self_| {
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do self.home_for_io_with_sched |self_, scheduler| {
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let result_cell = Cell::new_empty();
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let result_cell_ptr: *Cell<Result<uint, IoError>> = &result_cell;
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let scheduler = Local::take::<Scheduler>();
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let buf_ptr: *&mut [u8] = &buf;
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do scheduler.deschedule_running_task_and_then |_sched, task| {
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let task_cell = Cell::new(task);
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@ -730,10 +776,9 @@ impl RtioTcpStream for UvTcpStream {
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}
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fn write(&mut self, buf: &[u8]) -> Result<(), IoError> {
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do self.home_for_io |self_| {
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do self.home_for_io_with_sched |self_, scheduler| {
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let result_cell = Cell::new_empty();
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let result_cell_ptr: *Cell<Result<(), IoError>> = &result_cell;
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let scheduler = Local::take::<Scheduler>();
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let buf_ptr: *&[u8] = &buf;
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do scheduler.deschedule_running_task_and_then |_, task| {
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let task_cell = Cell::new(task);
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@ -827,11 +872,10 @@ impl Drop for UvUdpSocket {
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fn drop(&self) {
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// XXX need mutable finalizer
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let this = unsafe { transmute::<&UvUdpSocket, &mut UvUdpSocket>(self) };
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do this.home_for_io |_| {
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let scheduler = Local::take::<Scheduler>();
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do this.home_for_io_with_sched |self_, scheduler| {
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do scheduler.deschedule_running_task_and_then |_, task| {
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let task_cell = Cell::new(task);
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do this.watcher.close {
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do self_.watcher.close {
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let scheduler = Local::take::<Scheduler>();
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scheduler.resume_blocked_task_immediately(task_cell.take());
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}
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@ -850,11 +894,10 @@ impl RtioSocket for UvUdpSocket {
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impl RtioUdpSocket for UvUdpSocket {
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fn recvfrom(&mut self, buf: &mut [u8]) -> Result<(uint, SocketAddr), IoError> {
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do self.home_for_io |self_| {
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do self.home_for_io_with_sched |self_, scheduler| {
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let result_cell = Cell::new_empty();
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let result_cell_ptr: *Cell<Result<(uint, SocketAddr), IoError>> = &result_cell;
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||||
|
||||
let scheduler = Local::take::<Scheduler>();
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let buf_ptr: *&mut [u8] = &buf;
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||||
do scheduler.deschedule_running_task_and_then |_, task| {
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||||
let task_cell = Cell::new(task);
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@ -885,10 +928,9 @@ impl RtioUdpSocket for UvUdpSocket {
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}
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||||
|
||||
fn sendto(&mut self, buf: &[u8], dst: SocketAddr) -> Result<(), IoError> {
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||||
do self.home_for_io |self_| {
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||||
do self.home_for_io_with_sched |self_, scheduler| {
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||||
let result_cell = Cell::new_empty();
|
||||
let result_cell_ptr: *Cell<Result<(), IoError>> = &result_cell;
|
||||
let scheduler = Local::take::<Scheduler>();
|
||||
let buf_ptr: *&[u8] = &buf;
|
||||
do scheduler.deschedule_running_task_and_then |_, task| {
|
||||
let task_cell = Cell::new(task);
|
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@ -1047,9 +1089,8 @@ impl UvTimer {
|
||||
impl Drop for UvTimer {
|
||||
fn drop(&self) {
|
||||
let self_ = unsafe { transmute::<&UvTimer, &mut UvTimer>(self) };
|
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do self_.home_for_io |self_| {
|
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do self_.home_for_io_with_sched |self_, scheduler| {
|
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rtdebug!("closing UvTimer");
|
||||
let scheduler = Local::take::<Scheduler>();
|
||||
do scheduler.deschedule_running_task_and_then |_, task| {
|
||||
let task_cell = Cell::new(task);
|
||||
do self_.watcher.close {
|
||||
@ -1063,8 +1104,7 @@ impl Drop for UvTimer {
|
||||
|
||||
impl RtioTimer for UvTimer {
|
||||
fn sleep(&mut self, msecs: u64) {
|
||||
do self.home_for_io |self_| {
|
||||
let scheduler = Local::take::<Scheduler>();
|
||||
do self.home_for_io_with_sched |self_, scheduler| {
|
||||
do scheduler.deschedule_running_task_and_then |_sched, task| {
|
||||
rtdebug!("sleep: entered scheduler context");
|
||||
let task_cell = Cell::new(task);
|
||||
@ -1104,8 +1144,7 @@ impl UvFileStream {
|
||||
let result_cell = Cell::new_empty();
|
||||
let result_cell_ptr: *Cell<Result<int, IoError>> = &result_cell;
|
||||
let buf_ptr: *&mut [u8] = &buf;
|
||||
do self.home_for_io |self_| {
|
||||
let scheduler = Local::take::<Scheduler>();
|
||||
do self.home_for_io_with_sched |self_, scheduler| {
|
||||
do scheduler.deschedule_running_task_and_then |_, task| {
|
||||
let buf = unsafe { slice_to_uv_buf(*buf_ptr) };
|
||||
let task_cell = Cell::new(task);
|
||||
@ -1126,8 +1165,7 @@ impl UvFileStream {
|
||||
let result_cell = Cell::new_empty();
|
||||
let result_cell_ptr: *Cell<Result<(), IoError>> = &result_cell;
|
||||
let buf_ptr: *&[u8] = &buf;
|
||||
do self.home_for_io |self_| {
|
||||
let scheduler = Local::take::<Scheduler>();
|
||||
do self.home_for_io_with_sched |self_, scheduler| {
|
||||
do scheduler.deschedule_running_task_and_then |_, task| {
|
||||
let buf = unsafe { slice_to_uv_buf(*buf_ptr) };
|
||||
let task_cell = Cell::new(task);
|
||||
@ -1166,8 +1204,7 @@ impl Drop for UvFileStream {
|
||||
fn drop(&self) {
|
||||
let self_ = unsafe { transmute::<&UvFileStream, &mut UvFileStream>(self) };
|
||||
if self.close_on_drop {
|
||||
do self_.home_for_io |self_| {
|
||||
let scheduler = Local::take::<Scheduler>();
|
||||
do self_.home_for_io_with_sched |self_, scheduler| {
|
||||
do scheduler.deschedule_running_task_and_then |_, task| {
|
||||
let task_cell = Cell::new(task);
|
||||
do self_.fd.close(&self.loop_) |_,_| {
|
||||
@ -1273,14 +1310,16 @@ fn test_simple_homed_udp_io_bind_then_move_task_then_home_and_close() {
|
||||
assert!(maybe_socket.is_ok());
|
||||
|
||||
// block self on sched1
|
||||
let scheduler = Local::take::<Scheduler>();
|
||||
do scheduler.deschedule_running_task_and_then |_, task| {
|
||||
// unblock task
|
||||
do task.wake().map_move |task| {
|
||||
// send self to sched2
|
||||
tasksFriendHandle.take().send(TaskFromFriend(task));
|
||||
};
|
||||
// sched1 should now sleep since it has nothing else to do
|
||||
do task::unkillable { // FIXME(#8674)
|
||||
let scheduler = Local::take::<Scheduler>();
|
||||
do scheduler.deschedule_running_task_and_then |_, task| {
|
||||
// unblock task
|
||||
do task.wake().map_move |task| {
|
||||
// send self to sched2
|
||||
tasksFriendHandle.take().send(TaskFromFriend(task));
|
||||
};
|
||||
// sched1 should now sleep since it has nothing else to do
|
||||
}
|
||||
}
|
||||
// sched2 will wake up and get the task
|
||||
// as we do nothing else, the function ends and the socket goes out of scope
|
||||
@ -1548,13 +1587,15 @@ fn test_read_and_block() {
|
||||
}
|
||||
reads += 1;
|
||||
|
||||
let scheduler = Local::take::<Scheduler>();
|
||||
// Yield to the other task in hopes that it
|
||||
// will trigger a read callback while we are
|
||||
// not ready for it
|
||||
do scheduler.deschedule_running_task_and_then |sched, task| {
|
||||
let task = Cell::new(task);
|
||||
sched.enqueue_blocked_task(task.take());
|
||||
do task::unkillable { // FIXME(#8674)
|
||||
let scheduler = Local::take::<Scheduler>();
|
||||
// Yield to the other task in hopes that it
|
||||
// will trigger a read callback while we are
|
||||
// not ready for it
|
||||
do scheduler.deschedule_running_task_and_then |sched, task| {
|
||||
let task = Cell::new(task);
|
||||
sched.enqueue_blocked_task(task.take());
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
Loading…
Reference in New Issue
Block a user