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mlibc: temp patch while fix isn't upstream

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Matheus
2024-05-29 18:50:59 -03:00
parent 3093051a8b
commit e50768d0a1
1 changed files with 30 additions and 0 deletions
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patches/mlibc/jinx-working-patch.patch
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@@ -75,6 +75,20 @@ index 3474615..e034881 100644
}
char **backtrace_symbols(void *const *, int) {
diff --git mlibc-clean/options/internal/include/mlibc/lock.hpp mlibc-workdir/options/internal/include/mlibc/lock.hpp
index aa05079..8bff987 100644
--- mlibc-clean/options/internal/include/mlibc/lock.hpp
+++ mlibc-workdir/options/internal/include/mlibc/lock.hpp
@@ -50,7 +50,8 @@ struct FutexLockImpl {
// If the wait returns EAGAIN, that means that the waitersBit was just unset by
// some other thread. In this case, we should loop back around.
- if (e && e != EAGAIN)
+ // Also loop around in case of a signal interrupting the wait
+ if (e && e != EAGAIN && e != EINTR)
mlibc::panicLogger() << "sys_futex_wait() failed with error code " << e << frg::endlog;
// Opportunistically try to take the lock after we wake up.
diff --git mlibc-clean/options/posix/generic/dlfcn-stubs.cpp mlibc-workdir/options/posix/generic/dlfcn-stubs.cpp
index fc34a3b..b1a95a9 100644
--- mlibc-clean/options/posix/generic/dlfcn-stubs.cpp
@@ -85,6 +99,22 @@ index fc34a3b..b1a95a9 100644
#include <bits/ensure.h>
#include <dlfcn.h>
diff --git mlibc-clean/options/posix/generic/pthread-stubs.cpp mlibc-workdir/options/posix/generic/pthread-stubs.cpp
index 775989b..d28f950 100644
--- mlibc-clean/options/posix/generic/pthread-stubs.cpp
+++ mlibc-workdir/options/posix/generic/pthread-stubs.cpp
@@ -844,7 +844,10 @@ int pthread_once(pthread_once_t *once, void (*function) (void)) {
}else{
// a different thread is currently running the initializer.
__ensure(expected == onceLocked);
- if(int e = mlibc::sys_futex_wait((int *)&once->__mlibc_done, onceLocked, nullptr); e)
+ // if it gets interrupted by a signal, check again.
+ // EAGAIN will also be a retry, as it means the other thread completed
+ // and changed the __mlibc_done variable to signal it
+ if(int e = mlibc::sys_futex_wait((int *)&once->__mlibc_done, onceLocked, nullptr); e && e != EINTR && e != EAGAIN)
__ensure(!"sys_futex_wait() failed");
expected = __atomic_load_n(&once->__mlibc_done, __ATOMIC_ACQUIRE);
}
diff --git mlibc-clean/options/posix/generic/unistd-stubs.cpp mlibc-workdir/options/posix/generic/unistd-stubs.cpp
index 3279cc6..71837aa 100644
--- mlibc-clean/options/posix/generic/unistd-stubs.cpp