mirror of
https://github.com/RGBCube/serenity
synced 2025-07-27 00:27:45 +00:00
Userspace: Deal with select() returning EINTR on a signal interruption
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:
parent
a1eff3daba
commit
f2c0e55070
5 changed files with 33 additions and 8 deletions
25
Libraries/LibCore/CSyscallUtils.h
Normal file
25
Libraries/LibCore/CSyscallUtils.h
Normal file
|
@ -0,0 +1,25 @@
|
|||
#pragma once
|
||||
|
||||
#include <errno.h>
|
||||
#include <unistd.h>
|
||||
#include <sys/types.h>
|
||||
#include <AK/StdLibExtras.h>
|
||||
|
||||
namespace CSyscallUtils {
|
||||
|
||||
template <typename Syscall, class... Args>
|
||||
inline int safe_syscall(Syscall syscall, Args&& ... args) {
|
||||
for (;;) {
|
||||
int sysret = syscall(forward<Args>(args)...);
|
||||
if (sysret == -1) {
|
||||
dbgprintf("CSafeSyscall: %d (%d: %s)\n", sysret, errno, strerror(errno));
|
||||
if (errno == EINTR)
|
||||
continue;
|
||||
ASSERT_NOT_REACHED();
|
||||
}
|
||||
return sysret;
|
||||
}
|
||||
}
|
||||
|
||||
}
|
||||
|
Loading…
Add table
Add a link
Reference in a new issue