只使用标准库建立定时循环的任务

tnie · Dec 23, 2020 · 6bbcbcc · 6bbcbcc
1 parent 942f9c1
commit 6bbcbcc
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diff --git a/sensors.sln b/sensors.sln
@@ -7,6 +7,8 @@ Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "sensors", "sensors\sensors.
 EndProject
 Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "demo", "demo\demo.vcxproj", "{7DDEE0AC-2D93-49DC-A46A-A02729D57E8E}"
 EndProject
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "work", "work\work.vcxproj", "{6A704374-BC4F-45FC-B661-CFB0E6DDFBC0}"
+EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|x86 = Debug|x86
@@ -21,6 +23,10 @@ Global
 		{7DDEE0AC-2D93-49DC-A46A-A02729D57E8E}.Debug|x86.Build.0 = Debug|Win32
 		{7DDEE0AC-2D93-49DC-A46A-A02729D57E8E}.Release|x86.ActiveCfg = Release|Win32
 		{7DDEE0AC-2D93-49DC-A46A-A02729D57E8E}.Release|x86.Build.0 = Release|Win32
+		{6A704374-BC4F-45FC-B661-CFB0E6DDFBC0}.Debug|x86.ActiveCfg = Debug|Win32
+		{6A704374-BC4F-45FC-B661-CFB0E6DDFBC0}.Debug|x86.Build.0 = Debug|Win32
+		{6A704374-BC4F-45FC-B661-CFB0E6DDFBC0}.Release|x86.ActiveCfg = Release|Win32
+		{6A704374-BC4F-45FC-B661-CFB0E6DDFBC0}.Release|x86.Build.0 = Release|Win32
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE

diff --git a/work/SensorWork.cpp b/work/SensorWork.cpp
@@ -0,0 +1,74 @@
+// SensorWork.cpp : 定义控制台应用程序的入口点。
+//
+
+#include <thread>
+#include <spdlog/spdlog.h>
+using namespace std;
+
+/// <summary>
+/// 只使用标准库建立定时循环的任务。
+/// 可以 start()/shutdown() 重入，但没有考虑性能
+/// </summary>
+class SensorWork
+{
+    const std::chrono::seconds INTERVAL_OF_SENSOR = 5s;
+public:
+    SensorWork() = default;
+    void start()
+    {
+        {
+            std::lock_guard<std::mutex> gd(_mt);
+            if (_running) return;
+            _running = true;
+        }
+        std::thread th([&]() {
+            std::unique_lock<std::mutex> lock(_mt);
+            while (!_cond.wait_for(lock, INTERVAL_OF_SENSOR, [&]() {return !_running; }))
+            {
+                spdlog::info("**tick");
+            }
+            spdlog::info("**shutdown");
+        });
+        std::swap(th, _th);
+    }
+    void shutdown()
+    {
+        {
+            std::lock_guard<mutex> gd(_mt);
+            if (!_running) return;
+            _running = false;
+            _cond.notify_one();
+        }
+        if (_th.joinable())
+        {
+            _th.join();
+        }
+    }
+    ~SensorWork()
+    {
+        shutdown();
+    }
+private:
+    std::thread _th;
+    std::condition_variable _cond;
+    std::mutex _mt;
+    bool _running = false;
+};
+
+int main()
+{
+    spdlog::info("start");
+    SensorWork ins;
+    ins.start();
+    this_thread::sleep_for(17s);
+    spdlog::info("suspend");
+    ins.shutdown();
+    this_thread::sleep_for(17s);
+    spdlog::info("contine");
+    ins.start();
+    this_thread::sleep_for(17s);
+    spdlog::info("end");
+    ins.shutdown();
+    return 0;
+}
+
diff --git a/work/work.vcxproj b/work/work.vcxproj
@@ -0,0 +1,89 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project DefaultTargets="Build" ToolsVersion="14.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <ItemGroup Label="ProjectConfigurations">
+    <ProjectConfiguration Include="Debug|Win32">
+      <Configuration>Debug</Configuration>
+      <Platform>Win32</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Release|Win32">
+      <Configuration>Release</Configuration>
+      <Platform>Win32</Platform>
+    </ProjectConfiguration>
+  </ItemGroup>
+  <PropertyGroup Label="Globals">
+    <ProjectGuid>{6A704374-BC4F-45FC-B661-CFB0E6DDFBC0}</ProjectGuid>
+    <Keyword>Win32Proj</Keyword>
+    <RootNamespace>work</RootNamespace>
+    <WindowsTargetPlatformVersion>8.1</WindowsTargetPlatformVersion>
+  </PropertyGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'" Label="Configuration">
+    <ConfigurationType>Application</ConfigurationType>
+    <UseDebugLibraries>true</UseDebugLibraries>
+    <PlatformToolset>v140</PlatformToolset>
+    <CharacterSet>Unicode</CharacterSet>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'" Label="Configuration">
+    <ConfigurationType>Application</ConfigurationType>
+    <UseDebugLibraries>false</UseDebugLibraries>
+    <PlatformToolset>v140</PlatformToolset>
+    <WholeProgramOptimization>true</WholeProgramOptimization>
+    <CharacterSet>Unicode</CharacterSet>
+  </PropertyGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
+  <ImportGroup Label="ExtensionSettings">
+  </ImportGroup>
+  <ImportGroup Label="Shared">
+  </ImportGroup>
+  <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
+    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
+  </ImportGroup>
+  <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
+    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
+  </ImportGroup>
+  <PropertyGroup Label="UserMacros" />
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
+    <LinkIncremental>true</LinkIncremental>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
+    <LinkIncremental>false</LinkIncremental>
+  </PropertyGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
+    <ClCompile>
+      <PrecompiledHeader>
+      </PrecompiledHeader>
+      <WarningLevel>Level3</WarningLevel>
+      <Optimization>Disabled</Optimization>
+      <PreprocessorDefinitions>WIN32;_DEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <SDLCheck>true</SDLCheck>
+    </ClCompile>
+    <Link>
+      <SubSystem>Console</SubSystem>
+      <GenerateDebugInformation>true</GenerateDebugInformation>
+    </Link>
+  </ItemDefinitionGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
+    <ClCompile>
+      <WarningLevel>Level3</WarningLevel>
+      <PrecompiledHeader>
+      </PrecompiledHeader>
+      <Optimization>MaxSpeed</Optimization>
+      <FunctionLevelLinking>true</FunctionLevelLinking>
+      <IntrinsicFunctions>true</IntrinsicFunctions>
+      <PreprocessorDefinitions>WIN32;NDEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <SDLCheck>true</SDLCheck>
+    </ClCompile>
+    <Link>
+      <SubSystem>Console</SubSystem>
+      <EnableCOMDATFolding>true</EnableCOMDATFolding>
+      <OptimizeReferences>true</OptimizeReferences>
+      <GenerateDebugInformation>true</GenerateDebugInformation>
+    </Link>
+  </ItemDefinitionGroup>
+  <ItemGroup>
+    <ClCompile Include="SensorWork.cpp" />
+  </ItemGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
+  <ImportGroup Label="ExtensionTargets">
+  </ImportGroup>
+</Project>
diff --git a/work/work.vcxproj.filters b/work/work.vcxproj.filters
@@ -0,0 +1,22 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <ItemGroup>
+    <Filter Include="源文件">
+      <UniqueIdentifier>{4FC737F1-C7A5-4376-A066-2A32D752A2FF}</UniqueIdentifier>
+      <Extensions>cpp;c;cc;cxx;def;odl;idl;hpj;bat;asm;asmx</Extensions>
+    </Filter>
+    <Filter Include="头文件">
+      <UniqueIdentifier>{93995380-89BD-4b04-88EB-625FBE52EBFB}</UniqueIdentifier>
+      <Extensions>h;hh;hpp;hxx;hm;inl;inc;xsd</Extensions>
+    </Filter>
+    <Filter Include="资源文件">
+      <UniqueIdentifier>{67DA6AB6-F800-4c08-8B7A-83BB121AAD01}</UniqueIdentifier>
+      <Extensions>rc;ico;cur;bmp;dlg;rc2;rct;bin;rgs;gif;jpg;jpeg;jpe;resx;tiff;tif;png;wav;mfcribbon-ms</Extensions>
+    </Filter>
+  </ItemGroup>
+  <ItemGroup>
+    <ClCompile Include="SensorWork.cpp">
+      <Filter>源文件</Filter>
+    </ClCompile>
+  </ItemGroup>
+</Project>