1 //===-- HostThreadWindows.cpp -----------------------------------*- C++ -*-===//
2 //
3 //                     The LLVM Compiler Infrastructure
4 //
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9 
10 #include "lldb/Core/Error.h"
11 
12 #include "lldb/Host/windows/windows.h"
13 #include "lldb/Host/windows/HostThreadWindows.h"
14 
15 #include "llvm/ADT/STLExtras.h"
16 
17 using namespace lldb;
18 using namespace lldb_private;
19 
20 HostThreadWindows::HostThreadWindows()
21     : HostNativeThreadBase()
22 {
23 }
24 
25 HostThreadWindows::HostThreadWindows(lldb::thread_t thread)
26     : HostNativeThreadBase(thread)
27 {
28 }
29 
30 HostThreadWindows::~HostThreadWindows()
31 {
32     Reset();
33 }
34 
35 Error
36 HostThreadWindows::Join(lldb::thread_result_t *result)
37 {
38     Error error;
39     if (WAIT_OBJECT_0 != ::WaitForSingleObject(m_thread, INFINITE))
40     {
41         error.SetError(::GetLastError(), lldb::eErrorTypeWin32);
42         return error;
43     }
44 
45     m_state = (m_state == eThreadStateCancelling) ? eThreadStateCancelled : eThreadStateExited;
46 
47     if (result)
48     {
49         DWORD dword_result = 0;
50         if (!::GetExitCodeThread(m_thread, &dword_result))
51             *result = 0;
52         *result = dword_result;
53     }
54     return error;
55 }
56 
57 Error
58 HostThreadWindows::Cancel()
59 {
60     Error error;
61 
62     DWORD result = ::QueueUserAPC(::ExitThread, m_thread, 0);
63     error.SetError(result, eErrorTypeWin32);
64     return error;
65 }
66 
67 lldb::tid_t
68 HostThreadWindows::GetThreadId() const
69 {
70     return ::GetThreadId(m_thread);
71 }
72 
73 void
74 HostThreadWindows::Reset()
75 {
76     if (m_thread != LLDB_INVALID_HOST_THREAD)
77         ::CloseHandle(m_thread);
78 
79     HostNativeThreadBase::Reset();
80 }
81