diff options
Diffstat (limited to 'run-command.h')
| -rw-r--r-- | run-command.h | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/run-command.h b/run-command.h index 7958eb1e0..94e1e9d51 100644 --- a/run-command.h +++ b/run-command.h @@ -16,6 +16,7 @@ struct child_process { pid_t pid; int in; int out; + int err; const char *dir; const char *const *env; unsigned close_in:1; @@ -42,4 +43,26 @@ int run_command_v_opt_cd(const char **argv, int opt, const char *dir); */ int run_command_v_opt_cd_env(const char **argv, int opt, const char *dir, const char *const *env); +/* + * The purpose of the following functions is to feed a pipe by running + * a function asynchronously and providing output that the caller reads. + * + * It is expected that no synchronization and mutual exclusion between + * the caller and the feed function is necessary so that the function + * can run in a thread without interfering with the caller. + */ +struct async { + /* + * proc writes to fd and closes it; + * returns 0 on success, non-zero on failure + */ + int (*proc)(int fd, void *data); + void *data; + int out; /* caller reads from here and closes it */ + pid_t pid; +}; + +int start_async(struct async *async); +int finish_async(struct async *async); + #endif |