| /* |
| * Check: a unit test framework for C |
| * Copyright (C) 2001 2002, Arien Malec |
| * |
| * This library is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU Lesser General Public |
| * License as published by the Free Software Foundation; either |
| * version 2.1 of the License, or (at your option) any later version. |
| * |
| * This library 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 |
| * Lesser General Public License for more details. |
| * |
| * You should have received a copy of the GNU Lesser General Public |
| * License along with this library; if not, write to the |
| * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, |
| * Boston, MA 02110-1301, USA. |
| */ |
| |
| #include "config.h" |
| |
| #include <sys/types.h> |
| #ifdef HAVE_UNISTD_H |
| #include <unistd.h> |
| #endif |
| #include <stdlib.h> |
| #include <fcntl.h> |
| #include <stdio.h> |
| |
| #include "check_error.h" |
| #include "check.h" |
| #include "check_list.h" |
| #include "check_impl.h" |
| #include "check_msg.h" |
| #include "check_pack.h" |
| |
| |
| /* 'Pipe' is implemented as a temporary file to overcome message |
| * volume limitations outlined in bug #482012. This scheme works well |
| * with the existing usage wherein the parent does not begin reading |
| * until the child has done writing and exited. |
| * |
| * Pipe life cycle: |
| * - The parent creates a tmpfile(). |
| * - The fork() call has the effect of duplicating the file descriptor |
| * and copying (on write) the FILE* data structures. |
| * - The child writes to the file, and its dup'ed file descriptor and |
| * data structures are cleaned up on child process exit. |
| * - Before reading, the parent rewind()'s the file to reset both |
| * FILE* and underlying file descriptor location data. |
| * - When finished, the parent fclose()'s the FILE*, deleting the |
| * temporary file, per tmpfile()'s semantics. |
| * |
| * This scheme may break down if the usage changes to asynchronous |
| * reading and writing. |
| */ |
| |
| static FILE *send_file1; |
| static FILE *send_file2; |
| |
| static FILE *get_pipe (void); |
| static void setup_pipe (void); |
| static void teardown_pipe (void); |
| static TestResult *construct_test_result (RcvMsg * rmsg, int waserror); |
| static void tr_set_loc_by_ctx (TestResult * tr, enum ck_result_ctx ctx, |
| RcvMsg * rmsg); |
| static FILE * |
| get_pipe (void) |
| { |
| if (send_file2 != 0) { |
| return send_file2; |
| } |
| |
| if (send_file1 != 0) { |
| return send_file1; |
| } |
| |
| eprintf ("No messaging setup", __FILE__, __LINE__); |
| |
| return NULL; |
| } |
| |
| void |
| send_failure_info (const char *msg) |
| { |
| FailMsg fmsg; |
| |
| fmsg.msg = (char *) msg; |
| ppack (fileno (get_pipe ()), CK_MSG_FAIL, (CheckMsg *) & fmsg); |
| } |
| |
| void |
| send_loc_info (const char *file, int line) |
| { |
| LocMsg lmsg; |
| |
| lmsg.file = (char *) file; |
| lmsg.line = line; |
| ppack (fileno (get_pipe ()), CK_MSG_LOC, (CheckMsg *) & lmsg); |
| } |
| |
| void |
| send_ctx_info (enum ck_result_ctx ctx) |
| { |
| CtxMsg cmsg; |
| |
| cmsg.ctx = ctx; |
| ppack (fileno (get_pipe ()), CK_MSG_CTX, (CheckMsg *) & cmsg); |
| } |
| |
| TestResult * |
| receive_test_result (int waserror) |
| { |
| FILE *fp; |
| RcvMsg *rmsg; |
| TestResult *result; |
| |
| fp = get_pipe (); |
| if (fp == NULL) |
| eprintf ("Error in call to get_pipe", __FILE__, __LINE__ - 2); |
| rewind (fp); |
| rmsg = punpack (fileno (fp)); |
| teardown_pipe (); |
| setup_pipe (); |
| |
| result = construct_test_result (rmsg, waserror); |
| rcvmsg_free (rmsg); |
| return result; |
| } |
| |
| static void |
| tr_set_loc_by_ctx (TestResult * tr, enum ck_result_ctx ctx, RcvMsg * rmsg) |
| { |
| if (ctx == CK_CTX_TEST) { |
| tr->file = rmsg->test_file; |
| tr->line = rmsg->test_line; |
| rmsg->test_file = NULL; |
| rmsg->test_line = -1; |
| } else { |
| tr->file = rmsg->fixture_file; |
| tr->line = rmsg->fixture_line; |
| rmsg->fixture_file = NULL; |
| rmsg->fixture_line = -1; |
| } |
| } |
| |
| static TestResult * |
| construct_test_result (RcvMsg * rmsg, int waserror) |
| { |
| TestResult *tr; |
| |
| if (rmsg == NULL) |
| return NULL; |
| |
| tr = tr_create (); |
| |
| if (rmsg->msg != NULL || waserror) { |
| tr->ctx = (cur_fork_status () == CK_FORK) ? rmsg->lastctx : rmsg->failctx; |
| tr->msg = rmsg->msg; |
| rmsg->msg = NULL; |
| tr_set_loc_by_ctx (tr, tr->ctx, rmsg); |
| } else if (rmsg->lastctx == CK_CTX_SETUP) { |
| tr->ctx = CK_CTX_SETUP; |
| tr->msg = NULL; |
| tr_set_loc_by_ctx (tr, CK_CTX_SETUP, rmsg); |
| } else { |
| tr->ctx = CK_CTX_TEST; |
| tr->msg = NULL; |
| tr_set_loc_by_ctx (tr, CK_CTX_TEST, rmsg); |
| } |
| |
| return tr; |
| } |
| |
| void |
| setup_messaging (void) |
| { |
| setup_pipe (); |
| } |
| |
| void |
| teardown_messaging (void) |
| { |
| teardown_pipe (); |
| } |
| |
| static void |
| setup_pipe (void) |
| { |
| if (send_file1 != 0) { |
| if (send_file2 != 0) |
| eprintf ("Only one nesting of suite runs supported", __FILE__, __LINE__); |
| send_file2 = tmpfile (); |
| } else { |
| send_file1 = tmpfile (); |
| } |
| } |
| |
| static void |
| teardown_pipe (void) |
| { |
| if (send_file2 != 0) { |
| fclose (send_file2); |
| send_file2 = 0; |
| } else if (send_file1 != 0) { |
| fclose (send_file1); |
| send_file1 = 0; |
| } else { |
| eprintf ("No messaging setup", __FILE__, __LINE__); |
| } |
| } |