Mercurial > dwindows

comparison android/dw.cpp @ 2695:11aaf443d64b

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Android: Implement dw_exec() using fork/exec on APIs prior to 28. Use posix_spawnp() on API 28 and later. Unlike other platforms, currently this can only launch background processes.
author bsmith@81767d24-ef19-dc11-ae90-00e081727c95
date Tue, 02 Nov 2021 20:08:29 +0000
parents cee79add3669
children bc7c16800892
comparison
equal deleted inserted replaced
2694:cee79add3669 2695:11aaf443d64b
7214 * type: Either DW_EXEC_CON or DW_EXEC_GUI. 7214 * type: Either DW_EXEC_CON or DW_EXEC_GUI.
7215 * params: An array of pointers to string arguements. 7215 * params: An array of pointers to string arguements.
7216 * Returns: 7216 * Returns:
7217 * Process ID on success or DW_ERROR_UNKNOWN (-1) on error. 7217 * Process ID on success or DW_ERROR_UNKNOWN (-1) on error.
7218 */ 7218 */
7219 #if defined(__ANDROID__) && (__ANDROID_API__+0) < 28
7219 int API dw_exec(const char *program, int type, char **params) 7220 int API dw_exec(const char *program, int type, char **params)
7220 { 7221 {
7221 int ret = DW_ERROR_UNKNOWN; 7222 int retval = DW_ERROR_UNKNOWN;
7222 7223
7223 return ret; 7224 /* Forking isn't recommended on Android... but it works...
7224 } 7225 * and prior to API 28 it is the only way to launch processes.
7226 * Type is ignored, since this can only launch background processes.
7227 */
7228 if((retval = fork()) == 0)
7229 {
7230 int i;
7231
7232 /* Close any forked file descriptors */
7233 for(i=3; i<256; i++)
7234 close(i);
7235 setsid();
7236
7237 execvp(program, params);
7238 }
7239 return retval;
7240 }
7241 #else
7242 #include <spawn.h>
7243
7244 int API dw_exec(const char *program, int type, char **params)
7245 {
7246 int retval = DW_ERROR_UNKNOWN;
7247 pid_t pid;
7248
7249 /* API 28 and later has posix_spawn*() so use that instead of
7250 * fork/exec, however launched processes are still background
7251 * processes so ignore the type parameter.
7252 */
7253 if(posix_spawnp(&pid, program, NULL, NULL, params, NULL) == 0)
7254 {
7255 if(pid > 0)
7256 retval = pid;
7257 else
7258 retval = DW_ERROR_NONE;
7259 }
7260 return retval;
7261 }
7262 #endif
7225 7263
7226 /* 7264 /*
7227 * Loads a web browser pointed at the given URL. 7265 * Loads a web browser pointed at the given URL.
7228 * Parameters: 7266 * Parameters:
7229 * url: Uniform resource locator. 7267 * url: Uniform resource locator.