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-rw-r--r--graphics/asymptote/LspCpp/include/LibLsp/JsonRpc/Condition.h48
1 files changed, 48 insertions, 0 deletions
diff --git a/graphics/asymptote/LspCpp/include/LibLsp/JsonRpc/Condition.h b/graphics/asymptote/LspCpp/include/LibLsp/JsonRpc/Condition.h
new file mode 100644
index 0000000000..a5f550041d
--- /dev/null
+++ b/graphics/asymptote/LspCpp/include/LibLsp/JsonRpc/Condition.h
@@ -0,0 +1,48 @@
+#pragma once
+#include <condition_variable>
+template <class T>
+class Condition
+{
+public:
+
+ std::mutex m_mutex;
+ std::condition_variable m_condition;
+ ~Condition() {
+ m_condition.notify_all();
+ }
+ void notify(std::unique_ptr<T> data) noexcept
+ {
+ {
+ std::lock_guard<std::mutex> eventLock(m_mutex);
+ any.swap(data);
+ }
+ // wake up one waiter
+ m_condition.notify_one();
+ };
+
+
+ std::unique_ptr<T> wait(unsigned timeout=0)
+ {
+ std::unique_lock<std::mutex> ul(m_mutex);
+ if (!timeout) {
+ m_condition.wait(ul,[&]() {
+ if (!any)
+ return false;
+ return true;
+ });
+ }
+ else{
+ if(!any){
+ std::cv_status status = m_condition.wait_for(ul, std::chrono::milliseconds(timeout));
+ if (status == std::cv_status::timeout)
+ {
+ return {};
+ }
+ }
+ }
+ return std::unique_ptr<T>(any.release());
+
+ }
+private:
+ std::unique_ptr<T> any;
+};