--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/SDL3/SDL_process.h	Mon Jan 05 02:15:46 2026 -0500
@@ -0,0 +1,441 @@
+/*
+  Simple DirectMedia Layer
+  Copyright (C) 1997-2025 Sam Lantinga <slouken@libsdl.org>
+
+  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 <SDL3/SDL_stdinc.h>
+#include <SDL3/SDL_error.h>
+#include <SDL3/SDL_iostream.h>
+#include <SDL3/SDL_properties.h>
+
+#include <SDL3/SDL_begin_code.h>
+/* 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_WORKING_DIRECTORY_STRING`: a UTF-8 encoded
+ *   string representing the working directory for the process, defaults to
+ *   the current working directory.
+ * - `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.
+ * - `SDL_PROP_PROCESS_CREATE_CMDLINE_STRING`: a string containing the program
+ *   to run and any parameters. This string is passed directly to
+ *   `CreateProcess` on Windows, and does nothing on other platforms. This
+ *   property is only important if you want to start programs that does
+ *   non-standard command-line processing, and in most cases using
+ *   `SDL_PROP_PROCESS_CREATE_ARGS_POINTER` is sufficient.
+ *
+ * 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_WORKING_DIRECTORY_STRING    "SDL.process.create.working_directory"
+#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"
+#define SDL_PROP_PROCESS_CREATE_CMDLINE_STRING              "SDL.process.create.cmdline"
+
+/**
+ * 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 <SDL3/SDL_close_code.h>
+
+#endif /* SDL_process_h_ */