ioasync: Added async i/o APIs.

Fixes libsdl-org#1374.
icculus · Sep 5, 2024 · b9796b0 · b9796b0
1 parent dbf2d6d
commit b9796b0
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Showing 24 changed files with 1,889 additions and 3 deletions.
diff --git a/Android.mk b/Android.mk
@@ -35,6 +35,7 @@ LOCAL_SRC_FILES := \
 	$(wildcard $(LOCAL_PATH)/src/dynapi/*.c) \
 	$(wildcard $(LOCAL_PATH)/src/events/*.c) \
 	$(wildcard $(LOCAL_PATH)/src/file/*.c) \
+	$(wildcard $(LOCAL_PATH)/src/file/generic/*.c) \
 	$(wildcard $(LOCAL_PATH)/src/gpu/*.c) \
 	$(wildcard $(LOCAL_PATH)/src/gpu/vulkan/*.c) \
 	$(wildcard $(LOCAL_PATH)/src/haptic/*.c) \

diff --git a/CMakeLists.txt b/CMakeLists.txt
@@ -1125,6 +1125,7 @@ sdl_glob_sources(
   "${SDL3_SOURCE_DIR}/src/dynapi/*.c"
   "${SDL3_SOURCE_DIR}/src/events/*.c"
   "${SDL3_SOURCE_DIR}/src/file/*.c"
+  "${SDL3_SOURCE_DIR}/src/file/generic/*.c"
   "${SDL3_SOURCE_DIR}/src/filesystem/*.c"
   "${SDL3_SOURCE_DIR}/src/gpu/*.c"
   "${SDL3_SOURCE_DIR}/src/joystick/*.c"
@@ -2177,8 +2178,6 @@ elseif(APPLE)
     set(HAVE_SDL_MAIN_CALLBACKS TRUE)
   endif()
 
-  sdl_glob_sources("${SDL3_SOURCE_DIR}/src/file/cocoa/*.m")
-
   if(SDL_CAMERA)
     if(MACOS OR IOS)
       set(SDL_CAMERA_DRIVER_COREMEDIA 1)

diff --git a/VisualC-GDK/SDL/SDL.vcxproj b/VisualC-GDK/SDL/SDL.vcxproj
@@ -339,6 +339,7 @@
     <ClInclude Include="..\..\include\SDL3\SDL_haptic.h" />
     <ClInclude Include="..\..\include\SDL3\SDL_hints.h" />
     <ClInclude Include="..\..\include\SDL3\SDL_hidapi.h" />
+    <ClInclude Include="..\..\include\SDL3\SDL_ioasync.h" />
     <ClInclude Include="..\..\include\SDL3\SDL_joystick.h" />
     <ClInclude Include="..\..\include\SDL3\SDL_keyboard.h" />
     <ClInclude Include="..\..\include\SDL3\SDL_keycode.h" />
@@ -430,6 +431,8 @@
     <ClInclude Include="..\..\src\events\SDL_windowevents_c.h" />
     <ClInclude Include="..\..\src\filesystem\SDL_sysfilesystem.h" />
     <ClInclude Include="..\..\src\gpu\SDL_sysgpu.h" />
+    <ClInclude Include="..\..\src\file\SDL_ioasync_c.h" />
+    <ClInclude Include="..\..\src\file\SDL_sysioasync.h" />
     <ClInclude Include="..\..\src\haptic\SDL_haptic_c.h" />
     <ClInclude Include="..\..\src\haptic\SDL_syshaptic.h" />
     <ClInclude Include="..\..\src\haptic\windows\SDL_dinputhaptic_c.h" />
@@ -515,6 +518,8 @@
     <ClCompile Include="..\..\src\dialog\SDL_dialog_utils.c" />
     <ClCompile Include="..\..\src\filesystem\SDL_filesystem.c" />
     <ClCompile Include="..\..\src\filesystem\windows\SDL_sysfsops.c" />
+    <ClCompile Include="..\..\src\file\generic\SDL_ioasync_generic.c" />
+    <ClCompile Include="..\..\src\file\SDL_ioasync.c" />
     <ClCompile Include="..\..\src\main\gdk\SDL_sysmain_runapp.cpp" />
     <ClCompile Include="..\..\src\main\generic\SDL_sysmain_callbacks.c" />
     <ClCompile Include="..\..\src\main\SDL_main_callbacks.c" />

diff --git a/VisualC-GDK/SDL/SDL.vcxproj.filters b/VisualC-GDK/SDL/SDL.vcxproj.filters
@@ -13,6 +13,12 @@
     <ClCompile Include="..\..\src\filesystem\windows\SDL_sysfsops.c">
       <Filter>filesystem\windows</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\src\file\generic\SDL_ioasync_generic.c">
+      <Filter>file\generic</Filter>
+    </ClCompile>
+    <ClCompile Include="..\..\src\file\SDL_ioasync.c">
+      <Filter>file</Filter>
+    </ClCompile>
     <ClCompile Include="..\..\src\render\direct3d12\SDL_render_d3d12_xbox.cpp" />
     <ClCompile Include="..\..\src\render\direct3d12\SDL_shaders_d3d12_xboxone.cpp" />
     <ClCompile Include="..\..\src\render\direct3d12\SDL_shaders_d3d12_xboxseries.cpp" />
@@ -258,6 +264,9 @@
     <ClInclude Include="..\..\include\SDL3\SDL_haptic.h" />
     <ClInclude Include="..\..\include\SDL3\SDL_hints.h" />
     <ClInclude Include="..\..\include\SDL3\SDL_hidapi.h" />
+    <ClInclude Include="..\..\include\SDL3\SDL_ioasync.h">
+      <Filter>API Headers</Filter>
+    </ClInclude>
     <ClInclude Include="..\..\include\SDL3\SDL_joystick.h" />
     <ClInclude Include="..\..\include\SDL3\SDL_keyboard.h" />
     <ClInclude Include="..\..\include\SDL3\SDL_keycode.h" />
@@ -347,6 +356,12 @@
       <Filter>filesystem</Filter>
     </ClInclude>
     <ClInclude Include="..\..\src\gpu\SDL_sysgpu.h" />
+    <ClInclude Include="..\..\src\file\SDL_ioasync_c.h">
+      <Filter>file</Filter>
+    </ClInclude>
+    <ClInclude Include="..\..\src\file\SDL_sysioasync.h">
+      <Filter>file</Filter>
+    </ClInclude>
     <ClInclude Include="..\..\src\haptic\SDL_haptic_c.h" />
     <ClInclude Include="..\..\src\haptic\SDL_syshaptic.h" />
     <ClInclude Include="..\..\src\haptic\windows\SDL_dinputhaptic_c.h" />

diff --git a/VisualC-WinRT/SDL-UWP.vcxproj b/VisualC-WinRT/SDL-UWP.vcxproj
@@ -56,6 +56,7 @@
     <ClInclude Include="..\include\SDL3\SDL_hints.h" />
     <ClInclude Include="..\include\SDL3\SDL_hidapi.h" />
     <ClInclude Include="..\include\SDL3\SDL_input.h" />
+    <ClInclude Include="..\include\SDL3\SDL_ioasync.h" />
     <ClInclude Include="..\include\SDL3\SDL_joystick.h" />
     <ClInclude Include="..\include\SDL3\SDL_keyboard.h" />
     <ClInclude Include="..\include\SDL3\SDL_keycode.h" />
@@ -126,6 +127,8 @@
     <ClInclude Include="..\src\events\SDL_windowevents_c.h" />
     <ClInclude Include="..\src\filesystem\SDL_sysfilesystem.h" />
     <ClInclude Include="..\src\gpu\SDL_sysgpu.h" />
+    <ClInclude Include="..\src\file\SDL_ioasync_c.h" />
+    <ClInclude Include="..\src\file\SDL_sysioasync.h" />
     <ClInclude Include="..\src\haptic\SDL_haptic_c.h" />
     <ClInclude Include="..\src\haptic\SDL_syshaptic.h" />
     <ClInclude Include="..\src\haptic\windows\SDL_dinputhaptic_c.h" />
@@ -341,6 +344,8 @@
       <PrecompiledHeaderOutputFile Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">$(IntDir)$(TargetName)_cpp.pch</PrecompiledHeaderOutputFile>
       <PrecompiledHeaderOutputFile Condition="'$(Configuration)|$(Platform)'=='Release|x64'">$(IntDir)$(TargetName)_cpp.pch</PrecompiledHeaderOutputFile>
     </ClCompile>
+    <ClCompile Include="..\src\file\generic\SDL_ioasync_generic.c" />
+    <ClCompile Include="..\src\file\SDL_ioasync.c" />
     <ClCompile Include="..\src\file\SDL_iostream.c" />
     <ClCompile Include="..\src\filesystem\SDL_filesystem.c" />
     <ClCompile Include="..\src\filesystem\windows\SDL_sysfsops.c" />

diff --git a/VisualC-WinRT/SDL-UWP.vcxproj.filters b/VisualC-WinRT/SDL-UWP.vcxproj.filters
@@ -37,6 +37,12 @@
     <Filter Include="main\winrt">
       <UniqueIdentifier>{00006680a11742e2b280c6453be80000}</UniqueIdentifier>
     </Filter>
+    <Filter Include="file">
+      <UniqueIdentifier>{0000681aa625874d5ebeea7ef7640000}</UniqueIdentifier>
+    </Filter>
+    <Filter Include="file\generic">
+      <UniqueIdentifier>{00007fb7319480de96547d4a9b610000}</UniqueIdentifier>
+    </Filter>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\include\SDL3\SDL_begin_code.h">
@@ -102,6 +108,9 @@
     <ClInclude Include="..\include\SDL3\SDL_input.h">
       <Filter>Header Files</Filter>
     </ClInclude>
+    <ClInclude Include="..\include\SDL3\SDL_ioasync.h">
+      <Filter>API Headers</Filter>
+    </ClInclude>
     <ClInclude Include="..\include\SDL3\SDL_joystick.h">
       <Filter>Header Files</Filter>
     </ClInclude>
@@ -198,6 +207,12 @@
     <ClInclude Include="..\src\filesystem\SDL_sysfilesystem.h">
       <Filter>filesystem</Filter>
     </ClInclude>
+    <ClInclude Include="..\src\file\SDL_ioasync_c.h">
+      <Filter>file</Filter>
+    </ClInclude>
+    <ClInclude Include="..\src\file\SDL_sysioasync.h">
+      <Filter>file</Filter>
+    </ClInclude>
     <ClInclude Include="..\src\joystick\SDL_gamepad_c.h">
       <Filter>Header Files</Filter>
     </ClInclude>
@@ -615,6 +630,12 @@
     <ClCompile Include="..\src\filesystem\winrt\SDL_sysfilesystem.cpp">
       <Filter>Source Files</Filter>
     </ClCompile>
+    <ClCompile Include="..\src\file\generic\SDL_ioasync_generic.c">
+      <Filter>file\generic</Filter>
+    </ClCompile>
+    <ClCompile Include="..\src\file\SDL_ioasync.c">
+      <Filter>file</Filter>
+    </ClCompile>
     <ClCompile Include="..\src\file\SDL_iostream.c">
       <Filter>Source Files</Filter>
     </ClCompile>

diff --git a/VisualC/SDL/SDL.vcxproj b/VisualC/SDL/SDL.vcxproj
@@ -259,6 +259,7 @@
     <ClInclude Include="..\..\include\SDL3\SDL_haptic.h" />
     <ClInclude Include="..\..\include\SDL3\SDL_hints.h" />
     <ClInclude Include="..\..\include\SDL3\SDL_hidapi.h" />
+    <ClInclude Include="..\..\include\SDL3\SDL_ioasync.h" />
     <ClInclude Include="..\..\include\SDL3\SDL_joystick.h" />
     <ClInclude Include="..\..\include\SDL3\SDL_keyboard.h" />
     <ClInclude Include="..\..\include\SDL3\SDL_keycode.h" />
@@ -351,6 +352,8 @@
     <ClInclude Include="..\..\src\filesystem\SDL_sysfilesystem.h" />
     <ClInclude Include="..\..\src\gpu\SDL_sysgpu.h" />
     <ClInclude Include="..\..\src\gpu\vulkan\SDL_gpu_vulkan_vkfuncs.h" />
+    <ClInclude Include="..\..\src\file\SDL_ioasync_c.h" />
+    <ClInclude Include="..\..\src\file\SDL_sysioasync.h" />
     <ClInclude Include="..\..\src\haptic\SDL_haptic_c.h" />
     <ClInclude Include="..\..\src\haptic\SDL_syshaptic.h" />
     <ClInclude Include="..\..\src\haptic\windows\SDL_dinputhaptic_c.h" />
@@ -415,6 +418,8 @@
     <ClCompile Include="..\..\src\gpu\d3d11\SDL_gpu_d3d11.c" />
     <ClCompile Include="..\..\src\gpu\d3d12\SDL_gpu_d3d12.c" />
     <ClCompile Include="..\..\src\gpu\vulkan\SDL_gpu_vulkan.c" />
+    <ClCompile Include="..\..\src\file\generic\SDL_ioasync_generic.c" />
+    <ClCompile Include="..\..\src\file\SDL_ioasync.c" />
     <ClCompile Include="..\..\src\main\generic\SDL_sysmain_callbacks.c" />
     <ClCompile Include="..\..\src\main\SDL_main_callbacks.c" />
     <ClCompile Include="..\..\src\main\SDL_runapp.c" />

diff --git a/VisualC/SDL/SDL.vcxproj.filters b/VisualC/SDL/SDL.vcxproj.filters
@@ -210,6 +210,9 @@
     <Filter Include="main\windows">
       <UniqueIdentifier>{00009d5ded166cc6c6680ec771a30000}</UniqueIdentifier>
     </Filter>
+    <Filter Include="file\generic">
+      <UniqueIdentifier>{00004d6806b6238cae0ed62db5440000}</UniqueIdentifier>
+    </Filter>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\..\include\SDL3\SDL_begin_code.h">
@@ -278,6 +281,9 @@
     <ClInclude Include="..\..\include\SDL3\SDL_hidapi.h">
       <Filter>API Headers</Filter>
     </ClInclude>
+    <ClInclude Include="..\..\include\SDL3\SDL_ioasync.h">
+      <Filter>API Headers</Filter>
+    </ClInclude>
     <ClInclude Include="..\..\include\SDL3\SDL_joystick.h">
       <Filter>API Headers</Filter>
     </ClInclude>
@@ -434,6 +440,12 @@
     <ClInclude Include="..\..\src\filesystem\SDL_sysfilesystem.h">
       <Filter>filesystem</Filter>
     </ClInclude>
+    <ClInclude Include="..\..\src\file\SDL_ioasync_c.h">
+      <Filter>file</Filter>
+    </ClInclude>
+    <ClInclude Include="..\..\src\file\SDL_sysioasync.h">
+      <Filter>file</Filter>
+    </ClInclude>
     <ClInclude Include="..\..\src\main\SDL_main_callbacks.h">
       <Filter>main</Filter>
     </ClInclude>
@@ -939,6 +951,12 @@
     <ClCompile Include="..\..\src\filesystem\windows\SDL_sysfsops.c">
       <Filter>filesystem\windows</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\src\file\generic\SDL_ioasync_generic.c">
+      <Filter>file\generic</Filter>
+    </ClCompile>
+    <ClCompile Include="..\..\src\file\SDL_ioasync.c">
+      <Filter>file</Filter>
+    </ClCompile>
     <ClCompile Include="..\..\src\main\generic\SDL_sysmain_callbacks.c">
       <Filter>main\generic</Filter>
     </ClCompile>

diff --git a/Xcode/SDL/SDL.xcodeproj/project.pbxproj b/Xcode/SDL/SDL.xcodeproj/project.pbxproj
@@ -535,6 +535,11 @@
 		FA73671D19A540EF004122E4 /* CoreVideo.framework in Frameworks */ = {isa = PBXBuildFile; fileRef = FA73671C19A540EF004122E4 /* CoreVideo.framework */; platformFilters = (ios, maccatalyst, macos, tvos, watchos, ); };
 		0000E5D7110DFF81FF660000 /* SDL_cocoapen.h in Headers */ = {isa = PBXBuildFile; fileRef = 00002F2F5496FA184A0F0000 /* SDL_cocoapen.h */; };
 		0000D5B526B85DE7AB1C0000 /* SDL_cocoapen.m in Sources */ = {isa = PBXBuildFile; fileRef = 0000CCA310B73A7B59910000 /* SDL_cocoapen.m */; };
+		0000AEB9AE90228CA2D60000 /* SDL_ioasync.c in Sources */ = {isa = PBXBuildFile; fileRef = 00003928A612EC33D42C0000 /* SDL_ioasync.c */; };
+		000062F9C843687F50F70000 /* SDL_ioasync_c.h in Headers */ = {isa = PBXBuildFile; fileRef = 0000919399B1A908267F0000 /* SDL_ioasync_c.h */; };
+		00005081394CCF8322BE0000 /* SDL_sysioasync.h in Headers */ = {isa = PBXBuildFile; fileRef = 0000585B2CAB450B40540000 /* SDL_sysioasync.h */; };
+		000018AF97C08F2DAFFD0000 /* SDL_ioasync.h in Headers */ = {isa = PBXBuildFile; fileRef = 00004945A946DF5B1AED0000 /* SDL_ioasync.h */; settings = {ATTRIBUTES = (Public, ); }; };
+		00004D0B73767647AD550000 /* SDL_ioasync_generic.c in Sources */ = {isa = PBXBuildFile; fileRef = 0000FB02CDE4BE34A87E0000 /* SDL_ioasync_generic.c */; };
 /* End PBXBuildFile section */
 
 /* Begin PBXContainerItemProxy section */
@@ -1098,6 +1103,11 @@
 		FA73671C19A540EF004122E4 /* CoreVideo.framework */ = {isa = PBXFileReference; lastKnownFileType = wrapper.framework; name = CoreVideo.framework; path = System/Library/Frameworks/CoreVideo.framework; sourceTree = SDKROOT; };
 		00002F2F5496FA184A0F0000 /* SDL_cocoapen.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; name = SDL_cocoapen.h; path = SDL_cocoapen.h; sourceTree = "<group>"; };
 		0000CCA310B73A7B59910000 /* SDL_cocoapen.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; name = SDL_cocoapen.m; path = SDL_cocoapen.m; sourceTree = "<group>"; };
+		00003928A612EC33D42C0000 /* SDL_ioasync.c */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.c; name = SDL_ioasync.c; path = SDL_ioasync.c; sourceTree = "<group>"; };
+		0000919399B1A908267F0000 /* SDL_ioasync_c.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; name = SDL_ioasync_c.h; path = SDL_ioasync_c.h; sourceTree = "<group>"; };
+		0000585B2CAB450B40540000 /* SDL_sysioasync.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; name = SDL_sysioasync.h; path = SDL_sysioasync.h; sourceTree = "<group>"; };
+		00004945A946DF5B1AED0000 /* SDL_ioasync.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; name = SDL_ioasync.h; path = SDL3/SDL_ioasync.h; sourceTree = "<group>"; };
+		0000FB02CDE4BE34A87E0000 /* SDL_ioasync_generic.c */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.c; name = SDL_ioasync_generic.c; path = SDL_ioasync_generic.c; sourceTree = "<group>"; };
 /* End PBXFileReference section */
 
 /* Begin PBXFrameworksBuildPhase section */
@@ -1272,6 +1282,7 @@
 				F3F7D8C52933074B00816151 /* SDL_video.h */,
 				F3F7D8D42933074C00816151 /* SDL_vulkan.h */,
 				F3F7D8CF2933074C00816151 /* SDL.h */,
+				00004945A946DF5B1AED0000 /* SDL_ioasync.h */,
 			);
 			name = "Public Headers";
 			path = ../../include;
@@ -1911,6 +1922,10 @@
 			isa = PBXGroup;
 			children = (
 				A7D8A7DB23E2513F00DCD162 /* SDL_iostream.c */,
+				00003928A612EC33D42C0000 /* SDL_ioasync.c */,
+				0000919399B1A908267F0000 /* SDL_ioasync_c.h */,
+				0000585B2CAB450B40540000 /* SDL_sysioasync.h */,
+				000013C0F2EADC24ADC10000 /* generic */,
 			);
 			path = file;
 			sourceTree = "<group>";
@@ -2362,6 +2377,14 @@
 			path = resources;
 			sourceTree = "<group>";
 		};
+		000013C0F2EADC24ADC10000 /* generic */ = {
+			isa = PBXGroup;
+			children = (
+				0000FB02CDE4BE34A87E0000 /* SDL_ioasync_generic.c */,
+			);
+			path = generic;
+			sourceTree = "<group>";
+		};
 /* End PBXGroup section */
 
 /* Begin PBXHeadersBuildPhase section */
@@ -2975,6 +2998,8 @@
 				000095FA1BDE436CF3AF0000 /* SDL_time.c in Sources */,
 				0000140640E77F73F1DF0000 /* SDL_dialog_utils.c in Sources */,
 				0000D5B526B85DE7AB1C0000 /* SDL_cocoapen.m in Sources */,
+				0000AEB9AE90228CA2D60000 /* SDL_ioasync.c in Sources */,
+				00004D0B73767647AD550000 /* SDL_ioasync_generic.c in Sources */,
 			);
 			runOnlyForDeploymentPostprocessing = 0;
 		};

diff --git a/examples/CMakeLists.txt b/examples/CMakeLists.txt
@@ -189,7 +189,7 @@ add_sdl_example_executable(audio-load-wav SOURCES audio/03-load-wav/load-wav.c D
 add_sdl_example_executable(camera-read-and-draw SOURCES camera/01-read-and-draw/read-and-draw.c)
 add_sdl_example_executable(pen-drawing-lines SOURCES pen/01-drawing-lines/drawing-lines.c)
 add_sdl_example_executable(game-snake SOURCES game/01-snake/snake.c)
-
+add_sdl_example_executable(asyncio-load-bitmaps SOURCES asyncio/01-load-bitmaps/load-bitmaps.c DATAFILES ${CMAKE_CURRENT_SOURCE_DIR}/../test/sample.bmp ${CMAKE_CURRENT_SOURCE_DIR}/../test/gamepad_front.bmp ${CMAKE_CURRENT_SOURCE_DIR}/../test/speaker.bmp ${CMAKE_CURRENT_SOURCE_DIR}/../test/icon2x.bmp)
 
 if(PSP)
     # Build EBOOT files if building for PSP

diff --git a/examples/asyncio/01-load-bitmaps/README.txt b/examples/asyncio/01-load-bitmaps/README.txt
@@ -0,0 +1,6 @@
+This example code loads a few bitmap files from disk using the asynchronous
+i/o, and then draws it to the window. It uses a task group to watch multiple
+reads and deal with them in whatever order they finish.
+
+Note that for a single tiny file like this, you'd probably not want to bother
+with async i/o in real life, but this is just an example of how to do it.