1//===-- Progress.cpp ------------------------------------------------------===//
2//
3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4// See https://llvm.org/LICENSE.txt for license information.
5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6//
7//===----------------------------------------------------------------------===//
8
9#include "lldb/Core/Progress.h"
10
11#include "lldb/Core/Debugger.h"
12#include "lldb/Utility/StreamString.h"
13
14using namespace lldb;
15using namespace lldb_private;
16
17std::atomic<uint64_t> Progress::g_id(0);
18
19Progress::Progress(std::string title, uint64_t total,
20 lldb_private::Debugger *debugger)
21 : m_title(title), m_id(++g_id), m_completed(0), m_total(total) {
22 assert(total > 0);
23 if (debugger)
24 m_debugger_id = debugger->GetID();
25 std::lock_guard<std::mutex> guard(m_mutex);
26 ReportProgress();
27}
28
29Progress::~Progress() {
30 // Make sure to always report progress completed when this object is
31 // destructed so it indicates the progress dialog/activity should go away.
32 std::lock_guard<std::mutex> guard(m_mutex);
33 if (!m_completed) {
34 m_completed = m_total;
35 ReportProgress();
36 }
37}
38
39void Progress::Increment(uint64_t amount) {
40 if (amount > 0) {
41 std::lock_guard<std::mutex> guard(m_mutex);
42 // Watch out for unsigned overflow and make sure we don't increment too
43 // much and exceed m_total.
44 if (amount > (m_total - m_completed))
45 m_completed = m_total;
46 else
47 m_completed += amount;
48 ReportProgress();
49 }
50}
51
52void Progress::ReportProgress() {
53 if (!m_complete) {
54 // Make sure we only send one notification that indicates the progress is
55 // complete.
56 m_complete = m_completed == m_total;
57 Debugger::ReportProgress(m_id, m_title, m_completed, m_total,
58 m_debugger_id);
59 }
60}
61

source code of lldb/source/Core/Progress.cpp