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//===--------------------- KQueue.h -----------------------------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#ifndef utility_KQueue_h_
#define utility_KQueue_h_
#if defined(__APPLE__)
#define LLDB_USE_KQUEUES
#endif
#ifdef LLDB_USE_KQUEUES
#include <sys/event.h>
#include <sys/time.h>
#include <sys/types.h>
#include "lldb/lldb-defines.h"
namespace lldb_private {
class KQueue {
public:
KQueue() : m_fd(-1) {}
~KQueue() { Close(); }
bool IsValid() const { return m_fd >= 0; }
int GetFD(bool can_create);
int Close();
bool AddFDEvent(int fd, bool read, bool write, bool vnode);
int WaitForEvents(
struct kevent *events, int num_events, Error &error,
uint32_t timeout_usec = UINT32_MAX); // UINT32_MAX means infinite timeout
protected:
int m_fd; // The kqueue fd
};
} // namespace lldb_private
#endif // #ifdef LLDB_USE_KQUEUES
#endif // #ifndef utility_KQueue_h_
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