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Userspace: Deal with select() returning EINTR on a signal interruption

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Add a trivial CSafeSyscall template that calls a callback until it stops
returning EINTR, and use it everywhere we use select() now.

Thanks to Andreas for the suggestion of using a template parameter for
the syscall function to invoke.
This commit is contained in:
Robin Burchell 2019-07-21 13:46:53 +02:00 • committed by Andreas Kling
commit f2c0e55070
Notes: sideshowbarker 2024-07-19 13:06:09 +09:00
5 changed files with 33 additions and 8 deletions
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3
Libraries/LibCore/CoreIPCClient.h
View file

@ -3,6 +3,7 @@
#include <LibCore/CEventLoop.h>
#include <LibCore/CEvent.h>
#include <LibCore/CLocalSocket.h>
#include <LibCore/CSyscallUtils.h>
#include <LibCore/CNotifier.h>
#include <LibAudio/ASAPI.h>
@ -106,7 +107,7 @@ public:
fd_set rfds;
FD_ZERO(&rfds);
FD_SET(m_connection.fd(), &rfds);
int rc = select(m_connection.fd() + 1, &rfds, nullptr, nullptr, nullptr);
int rc = CSyscallUtils::safe_syscall(select, m_connection.fd() + 1, &rfds, nullptr, nullptr, nullptr);
if (rc < 0) {
perror("select");
}