From 6aaedb813fa11ba0679c3051bc2eb28646b9506c Mon Sep 17 00:00:00 2001 From: 3gg <3gg@shellblade.net> Date: Sat, 30 Aug 2025 16:53:58 -0700 Subject: Update to SDL3 --- src/contrib/SDL-3.2.20/include/SDL3/SDL_process.h | 430 ++++++++++++++++++++++ 1 file changed, 430 insertions(+) create mode 100644 src/contrib/SDL-3.2.20/include/SDL3/SDL_process.h (limited to 'src/contrib/SDL-3.2.20/include/SDL3/SDL_process.h') diff --git a/src/contrib/SDL-3.2.20/include/SDL3/SDL_process.h b/src/contrib/SDL-3.2.20/include/SDL3/SDL_process.h new file mode 100644 index 0000000..511b2f9 --- /dev/null +++ b/src/contrib/SDL-3.2.20/include/SDL3/SDL_process.h @@ -0,0 +1,430 @@ +/* + Simple DirectMedia Layer + Copyright (C) 1997-2025 Sam Lantinga + + This software is provided 'as-is', without any express or implied + warranty. In no event will the authors be held liable for any damages + arising from the use of this software. + + Permission is granted to anyone to use this software for any purpose, + including commercial applications, and to alter it and redistribute it + freely, subject to the following restrictions: + + 1. The origin of this software must not be misrepresented; you must not + claim that you wrote the original software. If you use this software + in a product, an acknowledgment in the product documentation would be + appreciated but is not required. + 2. Altered source versions must be plainly marked as such, and must not be + misrepresented as being the original software. + 3. This notice may not be removed or altered from any source distribution. +*/ + +/** + * # CategoryProcess + * + * Process control support. + * + * These functions provide a cross-platform way to spawn and manage OS-level + * processes. + * + * You can create a new subprocess with SDL_CreateProcess() and optionally + * read and write to it using SDL_ReadProcess() or SDL_GetProcessInput() and + * SDL_GetProcessOutput(). If more advanced functionality like chaining input + * between processes is necessary, you can use + * SDL_CreateProcessWithProperties(). + * + * You can get the status of a created process with SDL_WaitProcess(), or + * terminate the process with SDL_KillProcess(). + * + * Don't forget to call SDL_DestroyProcess() to clean up, whether the process + * process was killed, terminated on its own, or is still running! + */ + +#ifndef SDL_process_h_ +#define SDL_process_h_ + +#include +#include +#include +#include + +#include +/* Set up for C function definitions, even when using C++ */ +#ifdef __cplusplus +extern "C" { +#endif + +/** + * An opaque handle representing a system process. + * + * \since This datatype is available since SDL 3.2.0. + * + * \sa SDL_CreateProcess + */ +typedef struct SDL_Process SDL_Process; + +/** + * Create a new process. + * + * The path to the executable is supplied in args[0]. args[1..N] are + * additional arguments passed on the command line of the new process, and the + * argument list should be terminated with a NULL, e.g.: + * + * ```c + * const char *args[] = { "myprogram", "argument", NULL }; + * ``` + * + * Setting pipe_stdio to true is equivalent to setting + * `SDL_PROP_PROCESS_CREATE_STDIN_NUMBER` and + * `SDL_PROP_PROCESS_CREATE_STDOUT_NUMBER` to `SDL_PROCESS_STDIO_APP`, and + * will allow the use of SDL_ReadProcess() or SDL_GetProcessInput() and + * SDL_GetProcessOutput(). + * + * See SDL_CreateProcessWithProperties() for more details. + * + * \param args the path and arguments for the new process. + * \param pipe_stdio true to create pipes to the process's standard input and + * from the process's standard output, false for the process + * to have no input and inherit the application's standard + * output. + * \returns the newly created and running process, or NULL if the process + * couldn't be created. + * + * \threadsafety It is safe to call this function from any thread. + * + * \since This function is available since SDL 3.2.0. + * + * \sa SDL_CreateProcessWithProperties + * \sa SDL_GetProcessProperties + * \sa SDL_ReadProcess + * \sa SDL_GetProcessInput + * \sa SDL_GetProcessOutput + * \sa SDL_KillProcess + * \sa SDL_WaitProcess + * \sa SDL_DestroyProcess + */ +extern SDL_DECLSPEC SDL_Process * SDLCALL SDL_CreateProcess(const char * const *args, bool pipe_stdio); + +/** + * Description of where standard I/O should be directed when creating a + * process. + * + * If a standard I/O stream is set to SDL_PROCESS_STDIO_INHERITED, it will go + * to the same place as the application's I/O stream. This is the default for + * standard output and standard error. + * + * If a standard I/O stream is set to SDL_PROCESS_STDIO_NULL, it is connected + * to `NUL:` on Windows and `/dev/null` on POSIX systems. This is the default + * for standard input. + * + * If a standard I/O stream is set to SDL_PROCESS_STDIO_APP, it is connected + * to a new SDL_IOStream that is available to the application. Standard input + * will be available as `SDL_PROP_PROCESS_STDIN_POINTER` and allows + * SDL_GetProcessInput(), standard output will be available as + * `SDL_PROP_PROCESS_STDOUT_POINTER` and allows SDL_ReadProcess() and + * SDL_GetProcessOutput(), and standard error will be available as + * `SDL_PROP_PROCESS_STDERR_POINTER` in the properties for the created + * process. + * + * If a standard I/O stream is set to SDL_PROCESS_STDIO_REDIRECT, it is + * connected to an existing SDL_IOStream provided by the application. Standard + * input is provided using `SDL_PROP_PROCESS_CREATE_STDIN_POINTER`, standard + * output is provided using `SDL_PROP_PROCESS_CREATE_STDOUT_POINTER`, and + * standard error is provided using `SDL_PROP_PROCESS_CREATE_STDERR_POINTER` + * in the creation properties. These existing streams should be closed by the + * application once the new process is created. + * + * In order to use an SDL_IOStream with SDL_PROCESS_STDIO_REDIRECT, it must + * have `SDL_PROP_IOSTREAM_WINDOWS_HANDLE_POINTER` or + * `SDL_PROP_IOSTREAM_FILE_DESCRIPTOR_NUMBER` set. This is true for streams + * representing files and process I/O. + * + * \since This enum is available since SDL 3.2.0. + * + * \sa SDL_CreateProcessWithProperties + * \sa SDL_GetProcessProperties + * \sa SDL_ReadProcess + * \sa SDL_GetProcessInput + * \sa SDL_GetProcessOutput + */ +typedef enum SDL_ProcessIO +{ + SDL_PROCESS_STDIO_INHERITED, /**< The I/O stream is inherited from the application. */ + SDL_PROCESS_STDIO_NULL, /**< The I/O stream is ignored. */ + SDL_PROCESS_STDIO_APP, /**< The I/O stream is connected to a new SDL_IOStream that the application can read or write */ + SDL_PROCESS_STDIO_REDIRECT /**< The I/O stream is redirected to an existing SDL_IOStream. */ +} SDL_ProcessIO; + +/** + * Create a new process with the specified properties. + * + * These are the supported properties: + * + * - `SDL_PROP_PROCESS_CREATE_ARGS_POINTER`: an array of strings containing + * the program to run, any arguments, and a NULL pointer, e.g. const char + * *args[] = { "myprogram", "argument", NULL }. This is a required property. + * - `SDL_PROP_PROCESS_CREATE_ENVIRONMENT_POINTER`: an SDL_Environment + * pointer. If this property is set, it will be the entire environment for + * the process, otherwise the current environment is used. + * - `SDL_PROP_PROCESS_CREATE_STDIN_NUMBER`: an SDL_ProcessIO value describing + * where standard input for the process comes from, defaults to + * `SDL_PROCESS_STDIO_NULL`. + * - `SDL_PROP_PROCESS_CREATE_STDIN_POINTER`: an SDL_IOStream pointer used for + * standard input when `SDL_PROP_PROCESS_CREATE_STDIN_NUMBER` is set to + * `SDL_PROCESS_STDIO_REDIRECT`. + * - `SDL_PROP_PROCESS_CREATE_STDOUT_NUMBER`: an SDL_ProcessIO value + * describing where standard output for the process goes to, defaults to + * `SDL_PROCESS_STDIO_INHERITED`. + * - `SDL_PROP_PROCESS_CREATE_STDOUT_POINTER`: an SDL_IOStream pointer used + * for standard output when `SDL_PROP_PROCESS_CREATE_STDOUT_NUMBER` is set + * to `SDL_PROCESS_STDIO_REDIRECT`. + * - `SDL_PROP_PROCESS_CREATE_STDERR_NUMBER`: an SDL_ProcessIO value + * describing where standard error for the process goes to, defaults to + * `SDL_PROCESS_STDIO_INHERITED`. + * - `SDL_PROP_PROCESS_CREATE_STDERR_POINTER`: an SDL_IOStream pointer used + * for standard error when `SDL_PROP_PROCESS_CREATE_STDERR_NUMBER` is set to + * `SDL_PROCESS_STDIO_REDIRECT`. + * - `SDL_PROP_PROCESS_CREATE_STDERR_TO_STDOUT_BOOLEAN`: true if the error + * output of the process should be redirected into the standard output of + * the process. This property has no effect if + * `SDL_PROP_PROCESS_CREATE_STDERR_NUMBER` is set. + * - `SDL_PROP_PROCESS_CREATE_BACKGROUND_BOOLEAN`: true if the process should + * run in the background. In this case the default input and output is + * `SDL_PROCESS_STDIO_NULL` and the exitcode of the process is not + * available, and will always be 0. + * + * On POSIX platforms, wait() and waitpid(-1, ...) should not be called, and + * SIGCHLD should not be ignored or handled because those would prevent SDL + * from properly tracking the lifetime of the underlying process. You should + * use SDL_WaitProcess() instead. + * + * \param props the properties to use. + * \returns the newly created and running process, or NULL if the process + * couldn't be created. + * + * \threadsafety It is safe to call this function from any thread. + * + * \since This function is available since SDL 3.2.0. + * + * \sa SDL_CreateProcess + * \sa SDL_GetProcessProperties + * \sa SDL_ReadProcess + * \sa SDL_GetProcessInput + * \sa SDL_GetProcessOutput + * \sa SDL_KillProcess + * \sa SDL_WaitProcess + * \sa SDL_DestroyProcess + */ +extern SDL_DECLSPEC SDL_Process * SDLCALL SDL_CreateProcessWithProperties(SDL_PropertiesID props); + +#define SDL_PROP_PROCESS_CREATE_ARGS_POINTER "SDL.process.create.args" +#define SDL_PROP_PROCESS_CREATE_ENVIRONMENT_POINTER "SDL.process.create.environment" +#define SDL_PROP_PROCESS_CREATE_STDIN_NUMBER "SDL.process.create.stdin_option" +#define SDL_PROP_PROCESS_CREATE_STDIN_POINTER "SDL.process.create.stdin_source" +#define SDL_PROP_PROCESS_CREATE_STDOUT_NUMBER "SDL.process.create.stdout_option" +#define SDL_PROP_PROCESS_CREATE_STDOUT_POINTER "SDL.process.create.stdout_source" +#define SDL_PROP_PROCESS_CREATE_STDERR_NUMBER "SDL.process.create.stderr_option" +#define SDL_PROP_PROCESS_CREATE_STDERR_POINTER "SDL.process.create.stderr_source" +#define SDL_PROP_PROCESS_CREATE_STDERR_TO_STDOUT_BOOLEAN "SDL.process.create.stderr_to_stdout" +#define SDL_PROP_PROCESS_CREATE_BACKGROUND_BOOLEAN "SDL.process.create.background" + +/** + * Get the properties associated with a process. + * + * The following read-only properties are provided by SDL: + * + * - `SDL_PROP_PROCESS_PID_NUMBER`: the process ID of the process. + * - `SDL_PROP_PROCESS_STDIN_POINTER`: an SDL_IOStream that can be used to + * write input to the process, if it was created with + * `SDL_PROP_PROCESS_CREATE_STDIN_NUMBER` set to `SDL_PROCESS_STDIO_APP`. + * - `SDL_PROP_PROCESS_STDOUT_POINTER`: a non-blocking SDL_IOStream that can + * be used to read output from the process, if it was created with + * `SDL_PROP_PROCESS_CREATE_STDOUT_NUMBER` set to `SDL_PROCESS_STDIO_APP`. + * - `SDL_PROP_PROCESS_STDERR_POINTER`: a non-blocking SDL_IOStream that can + * be used to read error output from the process, if it was created with + * `SDL_PROP_PROCESS_CREATE_STDERR_NUMBER` set to `SDL_PROCESS_STDIO_APP`. + * - `SDL_PROP_PROCESS_BACKGROUND_BOOLEAN`: true if the process is running in + * the background. + * + * \param process the process to query. + * \returns a valid property ID on success or 0 on failure; call + * SDL_GetError() for more information. + * + * \threadsafety It is safe to call this function from any thread. + * + * \since This function is available since SDL 3.2.0. + * + * \sa SDL_CreateProcess + * \sa SDL_CreateProcessWithProperties + */ +extern SDL_DECLSPEC SDL_PropertiesID SDLCALL SDL_GetProcessProperties(SDL_Process *process); + +#define SDL_PROP_PROCESS_PID_NUMBER "SDL.process.pid" +#define SDL_PROP_PROCESS_STDIN_POINTER "SDL.process.stdin" +#define SDL_PROP_PROCESS_STDOUT_POINTER "SDL.process.stdout" +#define SDL_PROP_PROCESS_STDERR_POINTER "SDL.process.stderr" +#define SDL_PROP_PROCESS_BACKGROUND_BOOLEAN "SDL.process.background" + +/** + * Read all the output from a process. + * + * If a process was created with I/O enabled, you can use this function to + * read the output. This function blocks until the process is complete, + * capturing all output, and providing the process exit code. + * + * The data is allocated with a zero byte at the end (null terminated) for + * convenience. This extra byte is not included in the value reported via + * `datasize`. + * + * The data should be freed with SDL_free(). + * + * \param process The process to read. + * \param datasize a pointer filled in with the number of bytes read, may be + * NULL. + * \param exitcode a pointer filled in with the process exit code if the + * process has exited, may be NULL. + * \returns the data or NULL on failure; call SDL_GetError() for more + * information. + * + * \threadsafety This function is not thread safe. + * + * \since This function is available since SDL 3.2.0. + * + * \sa SDL_CreateProcess + * \sa SDL_CreateProcessWithProperties + * \sa SDL_DestroyProcess + */ +extern SDL_DECLSPEC void * SDLCALL SDL_ReadProcess(SDL_Process *process, size_t *datasize, int *exitcode); + +/** + * Get the SDL_IOStream associated with process standard input. + * + * The process must have been created with SDL_CreateProcess() and pipe_stdio + * set to true, or with SDL_CreateProcessWithProperties() and + * `SDL_PROP_PROCESS_CREATE_STDIN_NUMBER` set to `SDL_PROCESS_STDIO_APP`. + * + * Writing to this stream can return less data than expected if the process + * hasn't read its input. It may be blocked waiting for its output to be read, + * if so you may need to call SDL_GetProcessOutput() and read the output in + * parallel with writing input. + * + * \param process The process to get the input stream for. + * \returns the input stream or NULL on failure; call SDL_GetError() for more + * information. + * + * \threadsafety It is safe to call this function from any thread. + * + * \since This function is available since SDL 3.2.0. + * + * \sa SDL_CreateProcess + * \sa SDL_CreateProcessWithProperties + * \sa SDL_GetProcessOutput + */ +extern SDL_DECLSPEC SDL_IOStream * SDLCALL SDL_GetProcessInput(SDL_Process *process); + +/** + * Get the SDL_IOStream associated with process standard output. + * + * The process must have been created with SDL_CreateProcess() and pipe_stdio + * set to true, or with SDL_CreateProcessWithProperties() and + * `SDL_PROP_PROCESS_CREATE_STDOUT_NUMBER` set to `SDL_PROCESS_STDIO_APP`. + * + * Reading from this stream can return 0 with SDL_GetIOStatus() returning + * SDL_IO_STATUS_NOT_READY if no output is available yet. + * + * \param process The process to get the output stream for. + * \returns the output stream or NULL on failure; call SDL_GetError() for more + * information. + * + * \threadsafety It is safe to call this function from any thread. + * + * \since This function is available since SDL 3.2.0. + * + * \sa SDL_CreateProcess + * \sa SDL_CreateProcessWithProperties + * \sa SDL_GetProcessInput + */ +extern SDL_DECLSPEC SDL_IOStream * SDLCALL SDL_GetProcessOutput(SDL_Process *process); + +/** + * Stop a process. + * + * \param process The process to stop. + * \param force true to terminate the process immediately, false to try to + * stop the process gracefully. In general you should try to stop + * the process gracefully first as terminating a process may + * leave it with half-written data or in some other unstable + * state. + * \returns true on success or false on failure; call SDL_GetError() for more + * information. + * + * \threadsafety This function is not thread safe. + * + * \since This function is available since SDL 3.2.0. + * + * \sa SDL_CreateProcess + * \sa SDL_CreateProcessWithProperties + * \sa SDL_WaitProcess + * \sa SDL_DestroyProcess + */ +extern SDL_DECLSPEC bool SDLCALL SDL_KillProcess(SDL_Process *process, bool force); + +/** + * Wait for a process to finish. + * + * This can be called multiple times to get the status of a process. + * + * The exit code will be the exit code of the process if it terminates + * normally, a negative signal if it terminated due to a signal, or -255 + * otherwise. It will not be changed if the process is still running. + * + * If you create a process with standard output piped to the application + * (`pipe_stdio` being true) then you should read all of the process output + * before calling SDL_WaitProcess(). If you don't do this the process might be + * blocked indefinitely waiting for output to be read and SDL_WaitProcess() + * will never return true; + * + * \param process The process to wait for. + * \param block If true, block until the process finishes; otherwise, report + * on the process' status. + * \param exitcode a pointer filled in with the process exit code if the + * process has exited, may be NULL. + * \returns true if the process exited, false otherwise. + * + * \threadsafety This function is not thread safe. + * + * \since This function is available since SDL 3.2.0. + * + * \sa SDL_CreateProcess + * \sa SDL_CreateProcessWithProperties + * \sa SDL_KillProcess + * \sa SDL_DestroyProcess + */ +extern SDL_DECLSPEC bool SDLCALL SDL_WaitProcess(SDL_Process *process, bool block, int *exitcode); + +/** + * Destroy a previously created process object. + * + * Note that this does not stop the process, just destroys the SDL object used + * to track it. If you want to stop the process you should use + * SDL_KillProcess(). + * + * \param process The process object to destroy. + * + * \threadsafety This function is not thread safe. + * + * \since This function is available since SDL 3.2.0. + * + * \sa SDL_CreateProcess + * \sa SDL_CreateProcessWithProperties + * \sa SDL_KillProcess + */ +extern SDL_DECLSPEC void SDLCALL SDL_DestroyProcess(SDL_Process *process); + +/* Ends C function definitions when using C++ */ +#ifdef __cplusplus +} +#endif +#include + +#endif /* SDL_process_h_ */ -- cgit v1.2.3