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input/async: use class DeferredCall

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This commit is contained in:
Max Kellermann
2016-06-17 18:30:45 +02:00
parent 829616534e
commit 5d11759f7d
2 changed files with 29 additions and 15 deletions
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32
src/input/AsyncInputStream.cxx
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@@ -31,7 +31,9 @@ AsyncInputStream::AsyncInputStream(const char *_url,
Mutex &_mutex, Cond &_cond,
size_t _buffer_size,
size_t _resume_at)
:InputStream(_url, _mutex, _cond), DeferredMonitor(io_thread_get()),
:InputStream(_url, _mutex, _cond),
deferred_resume(io_thread_get(), BIND_THIS_METHOD(DeferredResume)),
deferred_seek(io_thread_get(), BIND_THIS_METHOD(DeferredSeek)),
allocation(_buffer_size),
buffer((uint8_t *)allocation.get(), _buffer_size),
resume_at(_resume_at),
@@ -141,7 +143,7 @@ AsyncInputStream::Seek(offset_type new_offset, Error &error)
seek_offset = new_offset;
seek_state = SeekState::SCHEDULED;
DeferredMonitor::Schedule();
deferred_seek.Schedule();
while (seek_state != SeekState::NONE)
cond.wait(mutex);
@@ -208,7 +210,7 @@ AsyncInputStream::Read(void *ptr, size_t read_size, Error &error)
offset += (offset_type)nbytes;
if (paused && buffer.GetSize() < resume_at)
DeferredMonitor::Schedule();
deferred_resume.Schedule();
return nbytes;
}
@@ -240,16 +242,24 @@ AsyncInputStream::AppendToBuffer(const void *data, size_t append_size)
}
void
AsyncInputStream::RunDeferred()
AsyncInputStream::DeferredResume()
{
const ScopeLock protect(mutex);
Resume();
if (seek_state == SeekState::SCHEDULED) {
seek_state = SeekState::PENDING;
buffer.Clear();
paused = false;
DoSeek(seek_offset);
}
}
void
AsyncInputStream::DeferredSeek()
{
const ScopeLock protect(mutex);
if (seek_state != SeekState::SCHEDULED)
return;
Resume();
seek_state = SeekState::PENDING;
buffer.Clear();
paused = false;
DoSeek(seek_offset);
}