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thread: SDL_CreateThreadWithStackSize is now SDL_CreateThreadWithProperties.

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Ryan C. Gordon 2024-05-22 01:47:09 -04:00
parent 0ec716819e
commit b83bb035e6
7 changed files with 108 additions and 44 deletions
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82
include/SDL3/SDL_thread.h
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@ -197,11 +197,12 @@ typedef int (SDLCALL * SDL_ThreadFunction) (void *data);
/**
* Create a new thread with a default stack size.
*
* This is equivalent to calling:
* This is a convenience function, equivalent to calling
* SDL_CreateThreadWithProperties with the following properties set:
*
* ```c
* SDL_CreateThreadWithStackSize(fn, name, 0, data);
* ```
* - `SDL_PROP_THREAD_CREATE_ENTRY_FUNCTION_POINTER`: `fn`
* - `SDL_PROP_THREAD_CREATE_NAME_STRING`: `name`
* - `SDL_PROP_THREAD_CREATE_USERDATA_POINTER: `data`
*
* Note that this "function" is actually a macro that calls an internal
* function with two extra parameters not listed here; they are
@ -222,16 +223,28 @@ typedef int (SDLCALL * SDL_ThreadFunction) (void *data);
*
* \since This function is available since SDL 3.0.0.
*
* \sa SDL_CreateThreadWithStackSize
* \sa SDL_CreateThreadWithProperties
* \sa SDL_WaitThread
*/
extern SDL_DECLSPEC SDL_Thread * SDLCALL SDL_CreateThread(SDL_ThreadFunction fn, const char *name, void *data);
/**
* Create a new thread with a specific stack size.
* Create a new thread with with the specified properties.
*
* SDL makes an attempt to report `name` to the system, so that debuggers can
* display it. Not all platforms support this.
* These are the supported properties:
*
* - `SDL_PROP_THREAD_CREATE_ENTRY_FUNCTION_POINTER`: an SDL_ThreadFunction
* value that will be called at the start of the new thread's life. Required.
* - `SDL_PROP_THREAD_CREATE_NAME_STRING`: the name of the new thread,
* which might be available to debuggers. Optional, defaults to NULL.
* - `SDL_PROP_THREAD_CREATE_USERDATA_POINTER`: an arbitrary app-defined
* pointer, which is passed to the entry function on the new thread, as
* its only parameter. Optional, defaults to NULL.
* - `SDL_PROP_THREAD_CREATE_STACKSIZE_NUMBER`: the size, in bytes, of the
* new thread's stack. Optional, defaults to 0 (system-defined default).
*
* SDL makes an attempt to report `SDL_PROP_THREAD_CREATE_NAME_STRING` to the
* system, so that debuggers can display it. Not all platforms support this.
*
* Thread naming is a little complicated: Most systems have very small limits
* for the string length (Haiku has 32 bytes, Linux currently has 16, Visual
@ -247,7 +260,8 @@ extern SDL_DECLSPEC SDL_Thread * SDLCALL SDL_CreateThread(SDL_ThreadFunction fn,
* (truncate, etc), but the original string contents will be available from
* SDL_GetThreadName().
*
* The size (in bytes) of the new stack can be specified. Zero means "use the
* The size (in bytes) of the new stack can be specified with
* `SDL_PROP_THREAD_CREATE_STACKSIZE_NUMBER`. Zero means "use the
* system default" which might be wildly different between platforms. x86
* Linux generally defaults to eight megabytes, an embedded device might be a
* few kilobytes instead. You generally need to specify a stack that is a
@ -260,19 +274,15 @@ extern SDL_DECLSPEC SDL_Thread * SDLCALL SDL_CreateThread(SDL_ThreadFunction fn,
* runtimes at the point of the function call. Language bindings that aren't
* using the C headers will need to deal with this.
*
* The actual symbol in SDL's library is `SDL_CreateThreadRuntime` (or
* `SDL_CreateThreadWithStackSpaceRuntime`), so there is no symbol clash, but
* trying to load an SDL shared library and look for "SDL_CreateThread"
* will fail.
* The actual symbol in SDL is `SDL_CreateThreadWithPropertiesRuntime`,
* so there is no symbol clash, but trying to load an SDL shared library
* and look for "SDL_CreateThreadWithProperties" will fail.
*
* Usually, apps should just call this function the same way on every platform and
* let the macros hide the details. See SDL_BeginThreadFunction for the
* technical details.
*
* \param fn the SDL_ThreadFunction function to call in the new thread
* \param name the name of the thread
* \param stacksize the size, in bytes, to allocate for the new thread stack.
* \param data a pointer that is passed to `fn`
* \param props the properties to use
* \returns an opaque pointer to the new thread object on success, NULL if the
* new thread could not be created; call SDL_GetError() for more
* information.
@ -282,15 +292,41 @@ extern SDL_DECLSPEC SDL_Thread * SDLCALL SDL_CreateThread(SDL_ThreadFunction fn,
* \sa SDL_CreateThread
* \sa SDL_WaitThread
*/
extern SDL_DECLSPEC SDL_Thread * SDLCALL SDL_CreateThreadWithStackSize(SDL_ThreadFunction fn, const char *name, const size_t stacksize, void *data);
extern SDL_DECLSPEC SDL_Thread * SDLCALL SDL_CreateThreadWithProperties(SDL_PropertiesID props);
#define SDL_PROP_THREAD_CREATE_ENTRY_FUNCTION_POINTER "entry_function"
#define SDL_PROP_THREAD_CREATE_NAME_STRING "name"
#define SDL_PROP_THREAD_CREATE_USERDATA_POINTER "userdata"
#define SDL_PROP_THREAD_CREATE_STACKSIZE_NUMBER "stacksize"
/* end wiki documentation for macros that are meant to look like functions. */
#endif
#ifndef SDL_WIKI_DOCUMENTATION_SECTION
/* These are the actual functions exported from SDL! Don't use them directly! Use the SDL_CreateThread and SDL_CreateThreadWithStackSize macros! */
/* These are the actual functions exported from SDL! Don't use them directly! Use the SDL_CreateThread and SDL_CreateThreadWithProperties macros! */
/**
* The actual symbol in SDL's library for SDL_CreateThread.
*
* **Do not call this function directly!** Use SDL_CreateThread, which is a macro that handles C runtime support.
*/
extern SDL_DECLSPEC SDL_Thread *SDLCALL SDL_CreateThreadRuntime(SDL_ThreadFunction fn, const char *name, void *data, SDL_FunctionPointer pfnBeginThread, SDL_FunctionPointer pfnEndThread);
extern SDL_DECLSPEC SDL_Thread *SDLCALL SDL_CreateThreadWithStackSizeRuntime(SDL_ThreadFunction fn, const char *name, const size_t stacksize, void *data,SDL_FunctionPointer pfnBeginThread, SDL_FunctionPointer pfnEndThread);
#define SDL_CreateThread(fn, name, data) SDL_CreateThreadRuntime(fn, name, data, (SDL_FunctionPointer) (SDL_BeginThreadFunction), (SDL_FunctionPointer) (SDL_EndThreadFunction))
#define SDL_CreateThreadWithStackSize(fn, name, stacksize, data) SDL_CreateThreadWithStackSizeRuntime(fn, name, stacksize, data, (SDL_FunctionPointer) (SDL_BeginThreadFunction), (SDL_FunctionPointer) (SDL_EndThreadFunction))
/**
* The actual symbol in SDL's library for SDL_CreateThreadWithProperties.
*
* **Do not call this function directly!** Use SDL_CreateThreadWithProperties, which is a macro that handles C runtime support.
*/
extern SDL_DECLSPEC SDL_Thread *SDLCALL SDL_CreateThreadWithPropertiesRuntime(SDL_PropertiesID props, SDL_FunctionPointer pfnBeginThread, SDL_FunctionPointer pfnEndThread);
#ifndef SDL_WIKI_DOCUMENTATION_SECTION
#define SDL_CreateThread(fn, name, data) SDL_CreateThreadRuntime((fn), (name), (data), (SDL_FunctionPointer) (SDL_BeginThreadFunction), (SDL_FunctionPointer) (SDL_EndThreadFunction))
#define SDL_CreateThreadWithProperties(props) SDL_CreateThreadWithPropertiesRuntime((props), (SDL_FunctionPointer) (SDL_BeginThreadFunction), (SDL_FunctionPointer) (SDL_EndThreadFunction))
#define SDL_PROP_THREAD_CREATE_ENTRY_FUNCTION_POINTER "entry_function"
#define SDL_PROP_THREAD_CREATE_NAME_STRING "name"
#define SDL_PROP_THREAD_CREATE_USERDATA_POINTER "userdata"
#define SDL_PROP_THREAD_CREATE_STACKSIZE_NUMBER "stacksize"
#endif
/**