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libcxx: update to LLVM 18

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release/18.x branch, commit 78b99c73ee4b96fe9ce0e294d4632326afb2db42

This adds the flag `-D_LIBCPP_HARDENING_MODE` which is determined based
on the Zig optimization mode.

This commit also fixes libunwind, libcxx, and libcxxabi to properly
report sub compilation errors.
This commit is contained in:
Andrew Kelley
2024-04-26 15:33:29 -07:00
parent bc6ebc6f25
commit 06ee65af9e
902 changed files with 80977 additions and 107576 deletions
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105
lib/libcxx/src/condition_variable.cpp vendored
View File

@@ -6,10 +6,6 @@
//
//===----------------------------------------------------------------------===//
#include <__config>
#ifndef _LIBCPP_HAS_NO_THREADS
#include <condition_variable>
#include <thread>
@@ -24,73 +20,52 @@ _LIBCPP_BEGIN_NAMESPACE_STD
// ~condition_variable is defined elsewhere.
void
condition_variable::notify_one() noexcept
{
__libcpp_condvar_signal(&__cv_);
void condition_variable::notify_one() noexcept { __libcpp_condvar_signal(&__cv_); }
void condition_variable::notify_all() noexcept { __libcpp_condvar_broadcast(&__cv_); }
void condition_variable::wait(unique_lock<mutex>& lk) noexcept {
if (!lk.owns_lock())
__throw_system_error(EPERM, "condition_variable::wait: mutex not locked");
int ec = __libcpp_condvar_wait(&__cv_, lk.mutex()->native_handle());
if (ec)
__throw_system_error(ec, "condition_variable wait failed");
}
void
condition_variable::notify_all() noexcept
{
__libcpp_condvar_broadcast(&__cv_);
void condition_variable::__do_timed_wait(unique_lock<mutex>& lk,
chrono::time_point<chrono::system_clock, chrono::nanoseconds> tp) noexcept {
using namespace chrono;
if (!lk.owns_lock())
__throw_system_error(EPERM, "condition_variable::timed wait: mutex not locked");
nanoseconds d = tp.time_since_epoch();
if (d > nanoseconds(0x59682F000000E941))
d = nanoseconds(0x59682F000000E941);
__libcpp_timespec_t ts;
seconds s = duration_cast<seconds>(d);
typedef decltype(ts.tv_sec) ts_sec;
constexpr ts_sec ts_sec_max = numeric_limits<ts_sec>::max();
if (s.count() < ts_sec_max) {
ts.tv_sec = static_cast<ts_sec>(s.count());
ts.tv_nsec = static_cast<decltype(ts.tv_nsec)>((d - s).count());
} else {
ts.tv_sec = ts_sec_max;
ts.tv_nsec = giga::num - 1;
}
int ec = __libcpp_condvar_timedwait(&__cv_, lk.mutex()->native_handle(), &ts);
if (ec != 0 && ec != ETIMEDOUT)
__throw_system_error(ec, "condition_variable timed_wait failed");
}
void
condition_variable::wait(unique_lock<mutex>& lk) noexcept
{
if (!lk.owns_lock())
__throw_system_error(EPERM,
"condition_variable::wait: mutex not locked");
int ec = __libcpp_condvar_wait(&__cv_, lk.mutex()->native_handle());
if (ec)
__throw_system_error(ec, "condition_variable wait failed");
}
void
condition_variable::__do_timed_wait(unique_lock<mutex>& lk,
chrono::time_point<chrono::system_clock, chrono::nanoseconds> tp) noexcept
{
using namespace chrono;
if (!lk.owns_lock())
__throw_system_error(EPERM,
"condition_variable::timed wait: mutex not locked");
nanoseconds d = tp.time_since_epoch();
if (d > nanoseconds(0x59682F000000E941))
d = nanoseconds(0x59682F000000E941);
__libcpp_timespec_t ts;
seconds s = duration_cast<seconds>(d);
typedef decltype(ts.tv_sec) ts_sec;
_LIBCPP_CONSTEXPR ts_sec ts_sec_max = numeric_limits<ts_sec>::max();
if (s.count() < ts_sec_max)
{
ts.tv_sec = static_cast<ts_sec>(s.count());
ts.tv_nsec = static_cast<decltype(ts.tv_nsec)>((d - s).count());
}
else
{
ts.tv_sec = ts_sec_max;
ts.tv_nsec = giga::num - 1;
}
int ec = __libcpp_condvar_timedwait(&__cv_, lk.mutex()->native_handle(), &ts);
if (ec != 0 && ec != ETIMEDOUT)
__throw_system_error(ec, "condition_variable timed_wait failed");
}
void
notify_all_at_thread_exit(condition_variable& cond, unique_lock<mutex> lk)
{
auto& tl_ptr = __thread_local_data();
// If this thread was not created using std::thread then it will not have
// previously allocated.
if (tl_ptr.get() == nullptr) {
tl_ptr.set_pointer(new __thread_struct);
}
__thread_local_data()->notify_all_at_thread_exit(&cond, lk.release());
void notify_all_at_thread_exit(condition_variable& cond, unique_lock<mutex> lk) {
auto& tl_ptr = __thread_local_data();
// If this thread was not created using std::thread then it will not have
// previously allocated.
if (tl_ptr.get() == nullptr) {
tl_ptr.set_pointer(new __thread_struct);
}
__thread_local_data()->notify_all_at_thread_exit(&cond, lk.release());
}
_LIBCPP_END_NAMESPACE_STD
_LIBCPP_POP_MACROS
#endif // !_LIBCPP_HAS_NO_THREADS