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#include "Thread.h"
#include <cassert>
#include <exception>
#include <utility>
namespace cru {
Thread::Thread(Thread &&other) noexcept
: detached_(other.detached_), joined_(other.joined_),
#ifdef CRU_WINDOWS
thread_handle_(other.thread_handle_)
#else
thread_(std::move(other.thread_))
#endif
{
other.joined_ = false;
#ifdef CRU_WINDOWS
other.thread_handle_ = nullptr;
#endif
} // namespace cru
Thread &Thread::operator=(Thread &&other) noexcept {
if (this != &other) {
detached_ = other.detached_;
joined_ = other.joined_;
#ifdef CRU_WINDOWS
thread_handle_ = other.thread_handle_;
other.thread_handle_ = nullptr;
#else
thread_ = std::move(other.thread_);
#endif
other.detached_ = false;
other.joined_ = false;
}
return *this;
}
Thread::~Thread() { Destroy(); }
void Thread::Join() {
joined_ = true;
#ifdef CRU_WINDOWS
assert(thread_handle_);
WaitForSingleObject(thread_handle_, INFINITE);
#else
assert(thread_);
auto c = pthread_join(*thread_, nullptr);
assert(c == 0);
#endif
}
void Thread::Detach() {
#ifdef CRU_WINDOWS
assert(thread_handle_);
#else
assert(thread_);
#endif
detached_ = true;
}
#ifdef CRU_WINDOWS
DWORD
#else
pthread_t
#endif
Thread::GetNativeID() {
#ifdef CRU_WINDOWS
assert(thread_handle_);
return thread_id_;
#else
assert(thread_);
return *thread_;
#endif
}
#ifdef CRU_WINDOWS
HANDLE
#else
pthread_t
#endif
Thread::GetNativeHandle() {
#ifdef CRU_WINDOWS
assert(thread_handle_);
return thread_handle_;
#else
assert(thread_);
return *thread_;
#endif
}
void Thread::swap(Thread &other) noexcept {
#ifdef CRU_WINDOWS
Thread temp = std::move(*this);
*this = std::move(other);
other = std::move(temp);
#else
#endif
}
void Thread::Destroy() noexcept {
if (!detached_ && !joined_ &&
#ifdef CRU_WINDOWS
thread_handle_ != nullptr
#else
thread_ != nullptr
#endif
) {
std::terminate();
} else {
detached_ = false;
joined_ = false;
#ifdef CRU_WINDOWS
thread_id_ = 0;
if (thread_handle_ != nullptr) {
auto c = CloseHandle(thread_handle_);
assert(c);
thread_handle_ = nullptr;
}
#else
thread_ = nullptr;
#endif
}
}
namespace {
#ifdef CRU_WINDOWS
DWORD WINAPI ThreadProc(_In_ LPVOID lpParameter) {
auto p = static_cast<std::function<void()> *>(lpParameter);
(*p)();
delete p;
return 0;
}
#else
void *ThreadProc(void *data) {
auto p = static_cast<std::function<void()> *>(data);
(*p)();
delete p;
return nullptr;
}
#endif
} // namespace
void Thread::CreateThread(std::function<void()> *proc) {
#ifdef CRU_WINDOWS
thread_handle_ = ::CreateThread(nullptr, 0, ThreadProc,
static_cast<void *>(proc), 0, &thread_id_);
assert(thread_handle_);
#else
thread_.reset(new pthread_t());
auto c = pthread_create(thread_.get(), nullptr, ThreadProc,
static_cast<void *>(proc));
assert(c == 0);
#endif
};
} // namespace cru
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