Mercurial > hg > CbC > CbC_gcc
annotate libiberty/pex-common.h @ 158:494b0b89df80 default tip
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| author | Shinji KONO <kono@ie.u-ryukyu.ac.jp> |
|---|---|
| date | Mon, 25 May 2020 18:13:55 +0900 |
| parents | 1830386684a0 |
| children |
| rev | line source |
|---|---|
| 0 | 1 /* Utilities to execute a program in a subprocess (possibly linked by pipes |
| 2 with other subprocesses), and wait for it. Shared logic. | |
| 145 | 3 Copyright (C) 1996-2020 Free Software Foundation, Inc. |
| 0 | 4 |
| 5 This file is part of the libiberty library. | |
| 6 Libiberty is free software; you can redistribute it and/or | |
| 7 modify it under the terms of the GNU Library General Public | |
| 8 License as published by the Free Software Foundation; either | |
| 9 version 2 of the License, or (at your option) any later version. | |
| 10 | |
| 11 Libiberty is distributed in the hope that it will be useful, | |
| 12 but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 14 Library General Public License for more details. | |
| 15 | |
| 16 You should have received a copy of the GNU Library General Public | |
| 17 License along with libiberty; see the file COPYING.LIB. If not, | |
| 18 write to the Free Software Foundation, Inc., 51 Franklin Street - Fifth Floor, | |
| 19 Boston, MA 02110-1301, USA. */ | |
| 20 | |
| 21 #ifndef PEX_COMMON_H | |
| 22 #define PEX_COMMON_H | |
| 23 | |
| 24 #include "config.h" | |
| 25 #include "libiberty.h" | |
| 26 #include <stdio.h> | |
| 27 | |
| 28 /* pid_t is may defined by config.h or sys/types.h needs to be | |
| 29 included. */ | |
| 30 #if !defined(pid_t) && defined(HAVE_SYS_TYPES_H) | |
| 31 #include <sys/types.h> | |
| 32 #endif | |
| 33 | |
| 34 #define install_error_msg "installation problem, cannot exec `%s'" | |
| 35 | |
| 36 /* stdin file number. */ | |
| 37 #define STDIN_FILE_NO 0 | |
| 38 | |
| 39 /* stdout file number. */ | |
| 40 #define STDOUT_FILE_NO 1 | |
| 41 | |
| 42 /* stderr file number. */ | |
| 43 #define STDERR_FILE_NO 2 | |
| 44 | |
| 45 /* value of `pipe': port index for reading. */ | |
| 46 #define READ_PORT 0 | |
| 47 | |
| 48 /* value of `pipe': port index for writing. */ | |
| 49 #define WRITE_PORT 1 | |
| 50 | |
| 51 /* The structure used by pex_init and friends. */ | |
| 52 | |
| 53 struct pex_obj | |
| 54 { | |
| 55 /* Flags. */ | |
| 56 int flags; | |
| 57 /* Name of calling program, for error messages. */ | |
| 58 const char *pname; | |
| 59 /* Base name to use for temporary files. */ | |
| 60 const char *tempbase; | |
| 61 /* Pipe to use as stdin for next process. */ | |
| 62 int next_input; | |
| 63 /* File name to use as stdin for next process. */ | |
| 64 char *next_input_name; | |
| 65 /* Whether next_input_name was allocated using malloc. */ | |
| 66 int next_input_name_allocated; | |
| 67 /* If not -1, stderr pipe from the last process. */ | |
| 68 int stderr_pipe; | |
| 69 /* Number of child processes. */ | |
| 70 int count; | |
| 71 /* PIDs of child processes; array allocated using malloc. */ | |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
72 pid_t *children; |
| 0 | 73 /* Exit statuses of child processes; array allocated using malloc. */ |
| 74 int *status; | |
| 75 /* Time used by child processes; array allocated using malloc. */ | |
| 76 struct pex_time *time; | |
| 77 /* Number of children we have already waited for. */ | |
| 78 int number_waited; | |
| 79 /* FILE created by pex_input_file. */ | |
| 80 FILE *input_file; | |
| 81 /* FILE created by pex_read_output. */ | |
| 82 FILE *read_output; | |
| 83 /* FILE created by pex_read_err. */ | |
| 84 FILE *read_err; | |
| 85 /* Number of temporary files to remove. */ | |
| 86 int remove_count; | |
| 87 /* List of temporary files to remove; array allocated using malloc | |
| 88 of strings allocated using malloc. */ | |
| 89 char **remove; | |
| 90 /* Pointers to system dependent functions. */ | |
| 91 const struct pex_funcs *funcs; | |
| 92 /* For use by system dependent code. */ | |
| 93 void *sysdep; | |
| 94 }; | |
| 95 | |
| 96 /* Functions passed to pex_run_common. */ | |
| 97 | |
| 98 struct pex_funcs | |
| 99 { | |
| 100 /* Open file NAME for reading. If BINARY is non-zero, open in | |
| 101 binary mode. Return >= 0 on success, -1 on error. */ | |
| 102 int (*open_read) (struct pex_obj *, const char */* name */, int /* binary */); | |
| 103 /* Open file NAME for writing. If BINARY is non-zero, open in | |
| 104 binary mode. Return >= 0 on success, -1 on error. */ | |
| 105 int (*open_write) (struct pex_obj *, const char */* name */, | |
| 111 | 106 int /* binary */, int /* append */); |
| 0 | 107 /* Execute a child process. FLAGS, EXECUTABLE, ARGV, ERR are from |
| 108 pex_run. IN, OUT, ERRDES, TOCLOSE are all descriptors, from | |
| 109 open_read, open_write, or pipe, or they are one of STDIN_FILE_NO, | |
| 110 STDOUT_FILE_NO or STDERR_FILE_NO; if IN, OUT, and ERRDES are not | |
| 111 STD*_FILE_NO, they should be closed. If the descriptor TOCLOSE | |
| 112 is not -1, and the system supports pipes, TOCLOSE should be | |
| 113 closed in the child process. The function should handle the | |
| 114 PEX_STDERR_TO_STDOUT flag. Return >= 0 on success, or -1 on | |
| 115 error and set *ERRMSG and *ERR. */ | |
| 116 pid_t (*exec_child) (struct pex_obj *, int /* flags */, | |
| 117 const char */* executable */, char * const * /* argv */, | |
| 118 char * const * /* env */, | |
| 119 int /* in */, int /* out */, int /* errdes */, | |
| 120 int /* toclose */, const char **/* errmsg */, | |
| 121 int */* err */); | |
| 122 /* Close a descriptor. Return 0 on success, -1 on error. */ | |
| 123 int (*close) (struct pex_obj *, int); | |
| 124 /* Wait for a child to complete, returning exit status in *STATUS | |
| 125 and time in *TIME (if it is not null). CHILD is from fork. DONE | |
| 126 is 1 if this is called via pex_free. ERRMSG and ERR are as in | |
| 127 fork. Return 0 on success, -1 on error. */ | |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
128 pid_t (*wait) (struct pex_obj *, pid_t /* child */, int * /* status */, |
| 0 | 129 struct pex_time * /* time */, int /* done */, |
| 130 const char ** /* errmsg */, int * /* err */); | |
| 131 /* Create a pipe (only called if PEX_USE_PIPES is set) storing two | |
| 132 descriptors in P[0] and P[1]. If BINARY is non-zero, open in | |
| 133 binary mode. Return 0 on success, -1 on error. */ | |
| 134 int (*pipe) (struct pex_obj *, int * /* p */, int /* binary */); | |
| 135 /* Get a FILE pointer to read from a file descriptor (only called if | |
| 136 PEX_USE_PIPES is set). If BINARY is non-zero, open in binary | |
| 137 mode. Return pointer on success, NULL on error. */ | |
| 138 FILE * (*fdopenr) (struct pex_obj *, int /* fd */, int /* binary */); | |
| 139 /* Get a FILE pointer to write to the file descriptor FD (only | |
| 140 called if PEX_USE_PIPES is set). If BINARY is non-zero, open in | |
| 141 binary mode. Arrange for FD not to be inherited by the child | |
| 142 processes. Return pointer on success, NULL on error. */ | |
| 143 FILE * (*fdopenw) (struct pex_obj *, int /* fd */, int /* binary */); | |
| 144 /* Free any system dependent data associated with OBJ. May be | |
| 145 NULL if there is nothing to do. */ | |
| 146 void (*cleanup) (struct pex_obj *); | |
| 147 }; | |
| 148 | |
| 149 extern struct pex_obj *pex_init_common (int, const char *, const char *, | |
| 150 const struct pex_funcs *); | |
| 151 | |
| 152 #endif |