[deliverable/linux.git] / tools / perf / util / run-command.h

#ifndef __PERF_RUN_COMMAND_H
#define __PERF_RUN_COMMAND_H

enum {
	ERR_RUN_COMMAND_FORK = 10000,
	ERR_RUN_COMMAND_EXEC,
	ERR_RUN_COMMAND_PIPE,
	ERR_RUN_COMMAND_WAITPID,
	ERR_RUN_COMMAND_WAITPID_WRONG_PID,
	ERR_RUN_COMMAND_WAITPID_SIGNAL,
	ERR_RUN_COMMAND_WAITPID_NOEXIT,
};
#define IS_RUN_COMMAND_ERR(x) (-(x) >= ERR_RUN_COMMAND_FORK)

struct child_process {
	const char **argv;
	pid_t pid;
	/*
	 * Using .in, .out, .err:
	 * - Specify 0 for no redirections (child inherits stdin, stdout,
	 *   stderr from parent).
	 * - Specify -1 to have a pipe allocated as follows:
	 *     .in: returns the writable pipe end; parent writes to it,
	 *          the readable pipe end becomes child's stdin
	 *     .out, .err: returns the readable pipe end; parent reads from
	 *          it, the writable pipe end becomes child's stdout/stderr
	 *   The caller of start_command() must close the returned FDs
	 *   after it has completed reading from/writing to it!
	 * - Specify > 0 to set a channel to a particular FD as follows:
	 *     .in: a readable FD, becomes child's stdin
	 *     .out: a writable FD, becomes child's stdout/stderr
	 *     .err > 0 not supported
	 *   The specified FD is closed by start_command(), even in case
	 *   of errors!
	 */
	int in;
	int out;
	int err;
	const char *dir;
	const char *const *env;
	unsigned no_stdin:1;
	unsigned no_stdout:1;
	unsigned no_stderr:1;
	unsigned perf_cmd:1; /* if this is to be perf sub-command */
	unsigned stdout_to_stderr:1;
	void (*preexec_cb)(void);
};

int start_command(struct child_process *);
int finish_command(struct child_process *);
int run_command(struct child_process *);

#define RUN_COMMAND_NO_STDIN 1
#define RUN_PERF_CMD	     2	/*If this is to be perf sub-command */
#define RUN_COMMAND_STDOUT_TO_STDERR 4
int run_command_v_opt(const char **argv, int opt);

#endif /* __PERF_RUN_COMMAND_H */
Commit	Line	Data
8b40f521 JK	1	#ifndef __PERF_RUN_COMMAND_H
8b40f521 JK	2	#define __PERF_RUN_COMMAND_H
07800601 IM	3
	4	enum {
	5	ERR_RUN_COMMAND_FORK = 10000,
	6	ERR_RUN_COMMAND_EXEC,
	7	ERR_RUN_COMMAND_PIPE,
	8	ERR_RUN_COMMAND_WAITPID,
	9	ERR_RUN_COMMAND_WAITPID_WRONG_PID,
	10	ERR_RUN_COMMAND_WAITPID_SIGNAL,
	11	ERR_RUN_COMMAND_WAITPID_NOEXIT,
	12	};
	13	#define IS_RUN_COMMAND_ERR(x) (-(x) >= ERR_RUN_COMMAND_FORK)
	14
	15	struct child_process {
	16	const char **argv;
	17	pid_t pid;
	18	/*
	19	* Using .in, .out, .err:
	20	* - Specify 0 for no redirections (child inherits stdin, stdout,
	21	* stderr from parent).
	22	* - Specify -1 to have a pipe allocated as follows:
	23	* .in: returns the writable pipe end; parent writes to it,
	24	* the readable pipe end becomes child's stdin
	25	* .out, .err: returns the readable pipe end; parent reads from
	26	* it, the writable pipe end becomes child's stdout/stderr
	27	* The caller of start_command() must close the returned FDs
	28	* after it has completed reading from/writing to it!
	29	* - Specify > 0 to set a channel to a particular FD as follows:
	30	* .in: a readable FD, becomes child's stdin
	31	* .out: a writable FD, becomes child's stdout/stderr
	32	* .err > 0 not supported
	33	* The specified FD is closed by start_command(), even in case
	34	* of errors!
	35	*/
	36	int in;
	37	int out;
	38	int err;
	39	const char *dir;
	40	const char const env;
	41	unsigned no_stdin:1;
	42	unsigned no_stdout:1;
	43	unsigned no_stderr:1;
	44	unsigned perf_cmd:1; /* if this is to be perf sub-command */
	45	unsigned stdout_to_stderr:1;
	46	void (*preexec_cb)(void);
	47	};
	48
	49	int start_command(struct child_process *);
	50	int finish_command(struct child_process *);
	51	int run_command(struct child_process *);
	52
07800601 IM	53	#define RUN_COMMAND_NO_STDIN 1
	54	#define RUN_PERF_CMD 2 /If this is to be perf sub-command /
	55	#define RUN_COMMAND_STDOUT_TO_STDERR 4
	56	int run_command_v_opt(const char **argv, int opt);
	57
8b40f521	58	#endif /* __PERF_RUN_COMMAND_H */