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simon-yeunglm · Oct 7, 2018 · a462027 · a462027
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diff --git a/.gitignore b/.gitignore
@@ -1,32 +1,5 @@
-# Prerequisites
-*.d
-
-# Compiled Object files
-*.slo
-*.lo
-*.o
-*.obj
-
-# Precompiled Headers
-*.gch
-*.pch
-
-# Compiled Dynamic libraries
-*.so
-*.dylib
-*.dll
-
-# Fortran module files
-*.mod
-*.smod
-
-# Compiled Static libraries
-*.lai
-*.la
-*.a
-*.lib
-
-# Executables
-*.exe
-*.out
-*.app
+bin/
+build/
+*.*~
+.vs
+*.vcxproj.user
diff --git a/HotReload.sln b/HotReload.sln
@@ -0,0 +1,44 @@
+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio 15
+VisualStudioVersion = 15.0.28010.2036
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "exe", "exe\exe.vcxproj", "{4A3A9DCC-B43F-4D12-9668-29A53D901EC4}"
+	ProjectSection(ProjectDependencies) = postProject
+		{6A3FDFED-6E2D-4E88-9492-6D6B578329B2} = {6A3FDFED-6E2D-4E88-9492-6D6B578329B2}
+	EndProjectSection
+EndProject
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "dll", "dll\dll.vcxproj", "{6A3FDFED-6E2D-4E88-9492-6D6B578329B2}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|x64 = Debug|x64
+		Debug|x86 = Debug|x86
+		Release|x64 = Release|x64
+		Release|x86 = Release|x86
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{4A3A9DCC-B43F-4D12-9668-29A53D901EC4}.Debug|x64.ActiveCfg = Debug|x64
+		{4A3A9DCC-B43F-4D12-9668-29A53D901EC4}.Debug|x64.Build.0 = Debug|x64
+		{4A3A9DCC-B43F-4D12-9668-29A53D901EC4}.Debug|x86.ActiveCfg = Debug|Win32
+		{4A3A9DCC-B43F-4D12-9668-29A53D901EC4}.Debug|x86.Build.0 = Debug|Win32
+		{4A3A9DCC-B43F-4D12-9668-29A53D901EC4}.Release|x64.ActiveCfg = Release|x64
+		{4A3A9DCC-B43F-4D12-9668-29A53D901EC4}.Release|x64.Build.0 = Release|x64
+		{4A3A9DCC-B43F-4D12-9668-29A53D901EC4}.Release|x86.ActiveCfg = Release|Win32
+		{4A3A9DCC-B43F-4D12-9668-29A53D901EC4}.Release|x86.Build.0 = Release|Win32
+		{6A3FDFED-6E2D-4E88-9492-6D6B578329B2}.Debug|x64.ActiveCfg = Debug|x64
+		{6A3FDFED-6E2D-4E88-9492-6D6B578329B2}.Debug|x64.Build.0 = Debug|x64
+		{6A3FDFED-6E2D-4E88-9492-6D6B578329B2}.Debug|x86.ActiveCfg = Debug|Win32
+		{6A3FDFED-6E2D-4E88-9492-6D6B578329B2}.Debug|x86.Build.0 = Debug|Win32
+		{6A3FDFED-6E2D-4E88-9492-6D6B578329B2}.Release|x64.ActiveCfg = Release|x64
+		{6A3FDFED-6E2D-4E88-9492-6D6B578329B2}.Release|x64.Build.0 = Release|x64
+		{6A3FDFED-6E2D-4E88-9492-6D6B578329B2}.Release|x86.ActiveCfg = Release|Win32
+		{6A3FDFED-6E2D-4E88-9492-6D6B578329B2}.Release|x86.Build.0 = Release|Win32
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+	GlobalSection(ExtensibilityGlobals) = postSolution
+		SolutionGuid = {EFBDC9E0-0E1A-409D-9D54-43F181EE878F}
+	EndGlobalSection
+EndGlobal
diff --git a/README.md b/README.md
@@ -1,2 +1,28 @@
 # HotReload
-Hot reload DLL on windows
+A sample project of hot-reload DLL on Windows.  
+More info can be found on my [blog](http://simonstechblog.blogspot.com/2018/10/testing-hot-reload-dll-on-windows.html).  
+
+<img src=https://3.bp.blogspot.com/-3HEXCXmcx18/W7nNnTFmj-I/AAAAAAAABKA/w8RXQPvveTY10HaQ0hCndEewAJuZqE5IQCLcBGAs/s640/hot_reload.gif width=640 />
+
+### How it works
+When the program loads a DLL:  
+```
+1. copy its associated PDB file.  
+2. copy the target DLL file and modify the hard coded PDB path to newly copied PDB path done in step 1.  
+3. load the copied DLL in step 2 instead.  
+```
+After editing some code:
+```
+4. detach the debugger to compile the DLL from Visual Studio.  
+5. unload the copied DLL.  
+6. repeat the above step 1 to 3.  
+7. re-attach the debugger.  
+```
+
+### Running the sample program
+```
+1. in Visual Studio, press F5 to compile and run the program with debugger.  
+2. edit some code, then press F7 to re-build the solution.  
+3. press enter to confirm the "Do you want to stop debugging?" dialog.  
+4. the program will reload the new DLL and re-attach the debugger automatically after compilation.  
+```
diff --git a/dll/dll.vcxproj b/dll/dll.vcxproj
@@ -0,0 +1,141 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project DefaultTargets="Build" ToolsVersion="15.0" 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>
+    <ProjectConfiguration Include="Debug|x64">
+      <Configuration>Debug</Configuration>
+      <Platform>x64</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Release|x64">
+      <Configuration>Release</Configuration>
+      <Platform>x64</Platform>
+    </ProjectConfiguration>
+  </ItemGroup>
+  <PropertyGroup Label="Globals">
+    <VCProjectVersion>15.0</VCProjectVersion>
+    <ProjectGuid>{6A3FDFED-6E2D-4E88-9492-6D6B578329B2}</ProjectGuid>
+    <RootNamespace>dll</RootNamespace>
+    <WindowsTargetPlatformVersion>10.0.17134.0</WindowsTargetPlatformVersion>
+  </PropertyGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'" Label="Configuration">
+    <ConfigurationType>DynamicLibrary</ConfigurationType>
+    <UseDebugLibraries>true</UseDebugLibraries>
+    <PlatformToolset>v141</PlatformToolset>
+    <CharacterSet>MultiByte</CharacterSet>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'" Label="Configuration">
+    <ConfigurationType>DynamicLibrary</ConfigurationType>
+    <UseDebugLibraries>false</UseDebugLibraries>
+    <PlatformToolset>v141</PlatformToolset>
+    <WholeProgramOptimization>true</WholeProgramOptimization>
+    <CharacterSet>MultiByte</CharacterSet>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'" Label="Configuration">
+    <ConfigurationType>DynamicLibrary</ConfigurationType>
+    <UseDebugLibraries>true</UseDebugLibraries>
+    <PlatformToolset>v141</PlatformToolset>
+    <CharacterSet>MultiByte</CharacterSet>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'" Label="Configuration">
+    <ConfigurationType>DynamicLibrary</ConfigurationType>
+    <UseDebugLibraries>false</UseDebugLibraries>
+    <PlatformToolset>v141</PlatformToolset>
+    <WholeProgramOptimization>true</WholeProgramOptimization>
+    <CharacterSet>MultiByte</CharacterSet>
+  </PropertyGroup>
+  <Import Project="$(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" />
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+  <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">
+    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
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+    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
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+  <PropertyGroup Label="UserMacros" />
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
+    <OutDir>$(SolutionDir)bin\$(Platform)\$(Configuration)\</OutDir>
+    <IntDir>$(SolutionDir)build\$(Platform)\$(Configuration)\$(ProjectName)\</IntDir>
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+    <OutDir>$(SolutionDir)bin\$(Platform)\$(Configuration)\</OutDir>
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+    <OutDir>$(SolutionDir)bin\$(Platform)\$(Configuration)\</OutDir>
+    <IntDir>$(SolutionDir)build\$(Platform)\$(Configuration)\$(ProjectName)\</IntDir>
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+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
+    <ClCompile>
+      <WarningLevel>Level3</WarningLevel>
+      <Optimization>Disabled</Optimization>
+      <SDLCheck>true</SDLCheck>
+      <ConformanceMode>true</ConformanceMode>
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+  </ItemDefinitionGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">
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+      <ConformanceMode>true</ConformanceMode>
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+      <Optimization>MaxSpeed</Optimization>
+      <FunctionLevelLinking>true</FunctionLevelLinking>
+      <IntrinsicFunctions>true</IntrinsicFunctions>
+      <SDLCheck>true</SDLCheck>
+      <ConformanceMode>true</ConformanceMode>
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+    <Link>
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+      <OptimizeReferences>true</OptimizeReferences>
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+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'">
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+      <Optimization>MaxSpeed</Optimization>
+      <FunctionLevelLinking>true</FunctionLevelLinking>
+      <IntrinsicFunctions>true</IntrinsicFunctions>
+      <SDLCheck>true</SDLCheck>
+      <ConformanceMode>true</ConformanceMode>
+    </ClCompile>
+    <Link>
+      <EnableCOMDATFolding>true</EnableCOMDATFolding>
+      <OptimizeReferences>true</OptimizeReferences>
+    </Link>
+  </ItemDefinitionGroup>
+  <ItemGroup>
+    <ClCompile Include="src\dll.cpp" />
+  </ItemGroup>
+  <ItemGroup>
+    <ClInclude Include="src\dll.h" />
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+  <ImportGroup Label="ExtensionTargets">
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diff --git a/dll/dll.vcxproj.filters b/dll/dll.vcxproj.filters
@@ -0,0 +1,9 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <ItemGroup>
+    <ClInclude Include="src\dll.h" />
+  </ItemGroup>
+  <ItemGroup>
+    <ClCompile Include="src\dll.cpp" />
+  </ItemGroup>
+</Project>
diff --git a/dll/src/dll.cpp b/dll/src/dll.cpp
@@ -0,0 +1,12 @@
+
+// by simon yeung, 30/09/2018
+// all rights reserved
+
+#include <stdio.h>
+#include "dll.h"
+
+bool tick()
+{
+	printf("hello\n");
+	return false;
+}
diff --git a/dll/src/dll.h b/dll/src/dll.h
@@ -0,0 +1,6 @@
+#pragma once
+
+// by simon yeung, 30/09/2018
+// all rights reserved
+
+extern "C" __declspec(dllexport) bool tick();