| 1 | //===-- HostThreadWindows.cpp ---------------------------------------------===// |
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| 2 | // |
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| 3 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
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| 4 | // See https://llvm.org/LICENSE.txt for license information. |
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| 5 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
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| 6 | // |
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| 7 | //===----------------------------------------------------------------------===// |
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| 8 | |
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| 9 | #include "lldb/Utility/Status.h" |
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| 10 | |
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| 11 | #include "lldb/Host/windows/HostThreadWindows.h" |
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| 12 | #include "lldb/Host/windows/windows.h" |
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| 13 | |
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| 14 | #include "llvm/ADT/STLExtras.h" |
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| 15 | |
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| 16 | using namespace lldb; |
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| 17 | using namespace lldb_private; |
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| 18 | |
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| 19 | static void __stdcall ExitThreadProxy(ULONG_PTR dwExitCode) { |
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| 20 | ::ExitThread(dwExitCode); |
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| 21 | } |
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| 22 | |
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| 23 | HostThreadWindows::HostThreadWindows() |
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| 24 | : HostNativeThreadBase(), m_owns_handle(true) {} |
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| 25 | |
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| 26 | HostThreadWindows::HostThreadWindows(lldb::thread_t thread) |
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| 27 | : HostNativeThreadBase(thread), m_owns_handle(true) {} |
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| 28 | |
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| 29 | HostThreadWindows::~HostThreadWindows() { Reset(); } |
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| 30 | |
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| 31 | void HostThreadWindows::SetOwnsHandle(bool owns) { m_owns_handle = owns; } |
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| 32 | |
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| 33 | Status HostThreadWindows::Join(lldb::thread_result_t *result) { |
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| 34 | Status error; |
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| 35 | if (IsJoinable()) { |
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| 36 | DWORD wait_result = ::WaitForSingleObject(m_thread, INFINITE); |
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| 37 | if (WAIT_OBJECT_0 == wait_result && result) { |
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| 38 | DWORD exit_code = 0; |
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| 39 | if (!::GetExitCodeThread(m_thread, &exit_code)) |
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| 40 | *result = 0; |
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| 41 | *result = exit_code; |
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| 42 | } else if (WAIT_OBJECT_0 != wait_result) |
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| 43 | error.SetError(::err: GetLastError(), type: eErrorTypeWin32); |
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| 44 | } else |
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| 45 | error.SetError(err: ERROR_INVALID_HANDLE, type: eErrorTypeWin32); |
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| 46 | |
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| 47 | Reset(); |
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| 48 | return error; |
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| 49 | } |
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| 50 | |
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| 51 | Status HostThreadWindows::Cancel() { |
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| 52 | Status error; |
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| 53 | |
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| 54 | DWORD result = ::QueueUserAPC(::ExitThreadProxy, m_thread, 0); |
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| 55 | error.SetError(err: result, type: eErrorTypeWin32); |
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| 56 | return error; |
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| 57 | } |
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| 58 | |
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| 59 | lldb::tid_t HostThreadWindows::GetThreadId() const { |
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| 60 | return ::GetThreadId(m_thread); |
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| 61 | } |
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| 62 | |
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| 63 | void HostThreadWindows::Reset() { |
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| 64 | if (m_owns_handle && m_thread != LLDB_INVALID_HOST_THREAD) |
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| 65 | ::CloseHandle(m_thread); |
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| 66 | |
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| 67 | HostNativeThreadBase::Reset(); |
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| 68 | } |
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| 69 | |
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| 70 | bool HostThreadWindows::EqualsThread(lldb::thread_t thread) const { |
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| 71 | return GetThreadId() == ::GetThreadId(thread); |
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| 72 | } |
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| 73 | |
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