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output/Internal: remember the most recent error

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This commit is contained in:
Max Kellermann 2016-12-27 07:36:12 +01:00
parent a9f2d25957
commit ef9acc54ec
2 changed files with 16 additions and 0 deletions
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10
src/output/Internal.hxx
View File

@ -29,6 +29,8 @@
#include "thread/Thread.hxx"
#include "system/PeriodClock.hxx"
#include <exception>
class PreparedFilter;
class MusicPipe;
class EventLoop;
@ -255,6 +257,14 @@ struct AudioOutput {
*/
AudioOutputSource source;
/**
* The error that occurred in the output thread. It is
* cleared whenever the output is opened successfully.
*
* Protected by #mutex.
*/
std::exception_ptr last_error;
/**
* Throws #std::runtime_error on error.
*/

6
src/output/OutputThread.cxx
View File

@ -405,11 +405,14 @@ AudioOutput::Task()
break;
case Command::ENABLE:
last_error = nullptr;
try {
Enable();
} catch (const std::runtime_error &e) {
LogError(e);
fail_timer.Update();
last_error = std::current_exception();
}
CommandFinished();
@ -421,11 +424,14 @@ AudioOutput::Task()
break;
case Command::OPEN:
last_error = nullptr;
try {
Open();
} catch (const std::runtime_error &e) {
LogError(e);
fail_timer.Update();
last_error = std::current_exception();
}
CommandFinished();