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Diffstat (limited to 'gcc-4.7/libiberty/pex-common.h')
| -rw-r--r-- | gcc-4.7/libiberty/pex-common.h | 153 |
1 files changed, 153 insertions, 0 deletions
diff --git a/gcc-4.7/libiberty/pex-common.h b/gcc-4.7/libiberty/pex-common.h new file mode 100644 index 000000000..af338e6a3 --- /dev/null +++ b/gcc-4.7/libiberty/pex-common.h @@ -0,0 +1,153 @@ +/* Utilities to execute a program in a subprocess (possibly linked by pipes + with other subprocesses), and wait for it. Shared logic. + Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2003, 2004 + Free Software Foundation, Inc. + +This file is part of the libiberty library. +Libiberty is free software; you can redistribute it and/or +modify it under the terms of the GNU Library General Public +License as published by the Free Software Foundation; either +version 2 of the License, or (at your option) any later version. + +Libiberty is distributed in the hope that it will be useful, +but WITHOUT ANY WARRANTY; without even the implied warranty of +MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +Library General Public License for more details. + +You should have received a copy of the GNU Library General Public +License along with libiberty; see the file COPYING.LIB. If not, +write to the Free Software Foundation, Inc., 51 Franklin Street - Fifth Floor, +Boston, MA 02110-1301, USA. */ + +#ifndef PEX_COMMON_H +#define PEX_COMMON_H + +#include "config.h" +#include "libiberty.h" +#include <stdio.h> + +/* pid_t is may defined by config.h or sys/types.h needs to be + included. */ +#if !defined(pid_t) && defined(HAVE_SYS_TYPES_H) +#include <sys/types.h> +#endif + +#define install_error_msg "installation problem, cannot exec `%s'" + +/* stdin file number. */ +#define STDIN_FILE_NO 0 + +/* stdout file number. */ +#define STDOUT_FILE_NO 1 + +/* stderr file number. */ +#define STDERR_FILE_NO 2 + +/* value of `pipe': port index for reading. */ +#define READ_PORT 0 + +/* value of `pipe': port index for writing. */ +#define WRITE_PORT 1 + +/* The structure used by pex_init and friends. */ + +struct pex_obj +{ + /* Flags. */ + int flags; + /* Name of calling program, for error messages. */ + const char *pname; + /* Base name to use for temporary files. */ + const char *tempbase; + /* Pipe to use as stdin for next process. */ + int next_input; + /* File name to use as stdin for next process. */ + char *next_input_name; + /* Whether next_input_name was allocated using malloc. */ + int next_input_name_allocated; + /* If not -1, stderr pipe from the last process. */ + int stderr_pipe; + /* Number of child processes. */ + int count; + /* PIDs of child processes; array allocated using malloc. */ + pid_t *children; + /* Exit statuses of child processes; array allocated using malloc. */ + int *status; + /* Time used by child processes; array allocated using malloc. */ + struct pex_time *time; + /* Number of children we have already waited for. */ + int number_waited; + /* FILE created by pex_input_file. */ + FILE *input_file; + /* FILE created by pex_read_output. */ + FILE *read_output; + /* FILE created by pex_read_err. */ + FILE *read_err; + /* Number of temporary files to remove. */ + int remove_count; + /* List of temporary files to remove; array allocated using malloc + of strings allocated using malloc. */ + char **remove; + /* Pointers to system dependent functions. */ + const struct pex_funcs *funcs; + /* For use by system dependent code. */ + void *sysdep; +}; + +/* Functions passed to pex_run_common. */ + +struct pex_funcs +{ + /* Open file NAME for reading. If BINARY is non-zero, open in + binary mode. Return >= 0 on success, -1 on error. */ + int (*open_read) (struct pex_obj *, const char */* name */, int /* binary */); + /* Open file NAME for writing. If BINARY is non-zero, open in + binary mode. Return >= 0 on success, -1 on error. */ + int (*open_write) (struct pex_obj *, const char */* name */, + int /* binary */); + /* Execute a child process. FLAGS, EXECUTABLE, ARGV, ERR are from + pex_run. IN, OUT, ERRDES, TOCLOSE are all descriptors, from + open_read, open_write, or pipe, or they are one of STDIN_FILE_NO, + STDOUT_FILE_NO or STDERR_FILE_NO; if IN, OUT, and ERRDES are not + STD*_FILE_NO, they should be closed. If the descriptor TOCLOSE + is not -1, and the system supports pipes, TOCLOSE should be + closed in the child process. The function should handle the + PEX_STDERR_TO_STDOUT flag. Return >= 0 on success, or -1 on + error and set *ERRMSG and *ERR. */ + pid_t (*exec_child) (struct pex_obj *, int /* flags */, + const char */* executable */, char * const * /* argv */, + char * const * /* env */, + int /* in */, int /* out */, int /* errdes */, + int /* toclose */, const char **/* errmsg */, + int */* err */); + /* Close a descriptor. Return 0 on success, -1 on error. */ + int (*close) (struct pex_obj *, int); + /* Wait for a child to complete, returning exit status in *STATUS + and time in *TIME (if it is not null). CHILD is from fork. DONE + is 1 if this is called via pex_free. ERRMSG and ERR are as in + fork. Return 0 on success, -1 on error. */ + pid_t (*wait) (struct pex_obj *, pid_t /* child */, int * /* status */, + struct pex_time * /* time */, int /* done */, + const char ** /* errmsg */, int * /* err */); + /* Create a pipe (only called if PEX_USE_PIPES is set) storing two + descriptors in P[0] and P[1]. If BINARY is non-zero, open in + binary mode. Return 0 on success, -1 on error. */ + int (*pipe) (struct pex_obj *, int * /* p */, int /* binary */); + /* Get a FILE pointer to read from a file descriptor (only called if + PEX_USE_PIPES is set). If BINARY is non-zero, open in binary + mode. Return pointer on success, NULL on error. */ + FILE * (*fdopenr) (struct pex_obj *, int /* fd */, int /* binary */); + /* Get a FILE pointer to write to the file descriptor FD (only + called if PEX_USE_PIPES is set). If BINARY is non-zero, open in + binary mode. Arrange for FD not to be inherited by the child + processes. Return pointer on success, NULL on error. */ + FILE * (*fdopenw) (struct pex_obj *, int /* fd */, int /* binary */); + /* Free any system dependent data associated with OBJ. May be + NULL if there is nothing to do. */ + void (*cleanup) (struct pex_obj *); +}; + +extern struct pex_obj *pex_init_common (int, const char *, const char *, + const struct pex_funcs *); + +#endif |