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withFramedSink(): Receive interrupts on the stderr thread

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Otherwise Nix deadlocks when Ctrl-C is received in withFramedSink():
the parent thread will wait forever for the stderr thread to shut
down.

Fixes the hang reported in https://github.com/NixOS/nix/issues/7245#issuecomment-1770560923.

(cherry picked from commit 24e70489e5)
This commit is contained in:
Eelco Dolstra 2024-01-03 19:14:50 +01:00 • committed by github-actions[bot]
parent b38e5a665e
commit 4b38ebb009
1 changed files with 3 additions and 0 deletions
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3
src/libstore/remote-store.cc
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@ -16,6 +16,8 @@
#include "logging.hh"
#include "callback.hh"
#include "filetransfer.hh"
#include "signals.hh"
#include <nlohmann/json.hpp>
namespace nix {
@ -1071,6 +1073,7 @@ void RemoteStore::ConnectionHandle::withFramedSink(std::function<void(Sink & sin
std::thread stderrThread([&]()
{
try {
ReceiveInterrupts receiveInterrupts;
processStderr(nullptr, nullptr, false);
} catch (...) {
ex = std::current_exception();