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output/httpd: wake up the I/O thread only if pages have been read from encoder

This commit is contained in:
Max Kellermann 2017-02-19 20:46:20 +01:00
parent 72008d951b
commit 452666f742
1 changed files with 5 additions and 1 deletions
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6
src/output/plugins/httpd/HttpdOutputPlugin.cxx
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@ -343,13 +343,17 @@ HttpdOutput::BroadcastFromEncoder()
cond.wait(mutex); cond.wait(mutex);
} }
bool empty = true;
PagePtr page; PagePtr page;
while ((page = ReadPage()) != nullptr) { while ((page = ReadPage()) != nullptr) {
const std::lock_guard<Mutex> lock(mutex); const std::lock_guard<Mutex> lock(mutex);
pages.push(std::move(page)); pages.push(std::move(page));
empty = false;
} }
DeferredMonitor::Schedule(); if (!empty)
DeferredMonitor::Schedule();
} }
inline void inline void