1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/os/ossrv/genericopenlibs/cstdlib/TSTLIB/THELLOU.C Fri Jun 15 03:10:57 2012 +0200
1.3 @@ -0,0 +1,228 @@
1.4 +/*
1.5 +* Copyright (c) 1997-2009 Nokia Corporation and/or its subsidiary(-ies).
1.6 +* All rights reserved.
1.7 +* This component and the accompanying materials are made available
1.8 +* under the terms of "Eclipse Public License v1.0"
1.9 +* which accompanies this distribution, and is available
1.10 +* at the URL "http://www.eclipse.org/legal/epl-v10.html".
1.11 +*
1.12 +* Initial Contributors:
1.13 +* Nokia Corporation - initial contribution.
1.14 +*
1.15 +* Contributors:
1.16 +*
1.17 +* Description:
1.18 +* A variant of "Hello World" which reports various bits of its environment
1.19 +* and returns an interesting exit status
1.20 +*
1.21 +*
1.22 +*/
1.23 +
1.24 +
1.25 +
1.26 +#include <stdio.h>
1.27 +#include <stdlib.h>
1.28 +#include <unistd.h>
1.29 +#include <string.h>
1.30 +#include <sys/wait.h>
1.31 +#include "CTEST.H"
1.32 +
1.33 +#ifdef __WINS__
1.34 +int triangle_recurse(char* prog, char* num, int progress)
1.35 + {
1.36 + printf("\nBut not under WINS where I'll be told 0\n");
1.37 + return 0;
1.38 + }
1.39 +
1.40 +int triangle_parallel(char* prog, char* num)
1.41 + {
1.42 + printf("\nBut not under WINS where I'll be told 0\n");
1.43 + return 0;
1.44 + }
1.45 +
1.46 +#else
1.47 +
1.48 +int triangle_recurse(char* prog, char* num, int progress)
1.49 + {
1.50 + int n;
1.51 + int pid, ret;
1.52 + char cmd[100];
1.53 + int fids[3];
1.54 +
1.55 + n = atol(num);
1.56 + if (n<1)
1.57 + return 0;
1.58 +
1.59 + sprintf(cmd, "%s do_triangle %d", prog, n-1);
1.60 + if (progress)
1.61 + {
1.62 + pid=popen3(cmd, "", 0, fids);
1.63 + if (pid<0)
1.64 + {
1.65 + fprintf(stderr, "Executing %s, ", cmd);
1.66 + perror("popen3 failed");
1.67 + return -1999999;
1.68 + }
1.69 + while (1)
1.70 + {
1.71 + int n=waitpid(pid, &ret, WNOHANG);
1.72 + if (n==pid)
1.73 + break;
1.74 + printf(".");
1.75 + fflush(stdout);
1.76 + sleep(1);
1.77 + }
1.78 + }
1.79 + else
1.80 + ret=system(cmd);
1.81 + return n+ret;
1.82 + }
1.83 +
1.84 +int triangle_parallel(char* prog, char* num)
1.85 + {
1.86 + int n;
1.87 + int pid, pid1, pid2, ret1, ret2, base, split;
1.88 + char cmd[100];
1.89 + int fids1[3], fids2[3];
1.90 + char* basep;
1.91 +
1.92 + n = atol(num);
1.93 + if (n<1)
1.94 + return 0;
1.95 + basep=getenv("TRIANGLE_BASE");
1.96 + if (basep==0)
1.97 + return 0;
1.98 + base=atol(basep);
1.99 +
1.100 + /* we have to add up the numbers base..n inclusive
1.101 + */
1.102 + if (base==n)
1.103 + return n;
1.104 + if (base+1==n)
1.105 + return base+n;
1.106 +
1.107 + /* At least 3 numbers, so split it into subtasks for child processes
1.108 + */
1.109 + split = (n-base)/2;
1.110 +
1.111 + sprintf(cmd, "%s do_trianglep %d", prog, base+split);
1.112 + pid1=popen3(cmd, "", 0, fids1);
1.113 + if (pid1<0)
1.114 + {
1.115 + fprintf(stderr, "Doing %d..%d of %d..%d", base+split, base, n, base);
1.116 + perror("popen3 failed");
1.117 + return -1999999;
1.118 + }
1.119 +
1.120 + sprintf(cmd, "%d", base+split+1);
1.121 + setenv("TRIANGLE_BASE", cmd, 1);
1.122 +
1.123 + sprintf(cmd, "%s do_trianglep %d", prog, n);
1.124 + pid2=popen3(cmd, "", 0, fids2);
1.125 + if (pid2<0)
1.126 + {
1.127 + fprintf(stderr, "Doing %d..%d of %d..%d", n, base+split+1, n, base);
1.128 + perror("popen3 failed");
1.129 + return -1999999;
1.130 + }
1.131 +
1.132 + /* Now collect the results */
1.133 + ret1=-10000;
1.134 + ret2=-10000;
1.135 + for (n=0; n<2; n++)
1.136 + {
1.137 + int ret=-3999999;
1.138 + pid=wait(&ret);
1.139 + if (pid<0)
1.140 + {
1.141 + perror("waitpid failed");
1.142 + return -2999999;
1.143 + }
1.144 + if (pid==pid1)
1.145 + {
1.146 + pid1=-1;
1.147 + ret1=ret;
1.148 + }
1.149 + else if (pid==pid2)
1.150 + {
1.151 + pid2=-1;
1.152 + ret2=ret;
1.153 + }
1.154 + else
1.155 + printf("Unexpected pid %d (not %d or %d)\n", pid, pid1, pid2);
1.156 + }
1.157 + return ret1+ret2;
1.158 + }
1.159 +
1.160 +#endif
1.161 +
1.162 +/**
1.163 +Usage: THELLOU [triangle[p] <n>]
1.164 +
1.165 +@SYMTestCaseID SYSLIB-STDLIB-CT-1058
1.166 +@SYMTestCaseDesc Tests for printing to standard output stream
1.167 +@SYMTestPriority High
1.168 +@SYMTestActions Prints some stuff (looks at args, getenv("USER"), cwd) to stdout and stderr.
1.169 + Will compute triangle numbers by calling itself recursively, or parallel subdivison
1.170 +@SYMTestExpectedResults Test must not fail
1.171 +@SYMREQ REQ0000
1.172 +*/
1.173 +int main (int argc, char *argv[])
1.174 + {
1.175 + char *user=getenv("USER");
1.176 + char cwd[MAXPATHLEN];
1.177 + int ret=3, i;
1.178 +
1.179 + start_redirection_server();
1.180 +
1.181 + if (argc==3 && strcmp(argv[1],"do_triangle")==0)
1.182 + return triangle_recurse(argv[0], argv[2], 0);
1.183 +
1.184 + if (argc==3 && strcmp(argv[1],"do_trianglep")==0)
1.185 + return triangle_parallel(argv[0], argv[2]);
1.186 +
1.187 + if (user)
1.188 + {
1.189 + printf("Hello %s\n", user);
1.190 + ret=4;
1.191 + }
1.192 + else
1.193 + printf("Greetings.\n");
1.194 +
1.195 + printf("I am process %d\n", getpid());
1.196 +
1.197 + if (getcwd(cwd,sizeof(cwd))!=0)
1.198 + printf("I am speaking to you from %s\n", cwd);
1.199 +
1.200 + printf("I have %d arguments: ", argc);
1.201 + for (i=0; i<argc; i++)
1.202 + printf(">%s< ", argv[i]);
1.203 + printf("\r\n");
1.204 +
1.205 + printf("In a few moments I shall say %c to stderr:\n", 'a'+argc);
1.206 + fflush(stdout);
1.207 +
1.208 + fprintf(stderr, "%c\n", 'a'+argc);
1.209 + fflush(stderr);
1.210 +
1.211 + if (argc==3 && strcmp(argv[1],"triangle")==0)
1.212 + {
1.213 + printf("For my next trick I shall compute the triangle of %s: ", argv[2]);
1.214 + fflush(stdout);
1.215 + ret=triangle_recurse(argv[0], argv[2], 1);
1.216 + printf("it's %d\n", ret);
1.217 + }
1.218 +
1.219 + if (argc==3 && strcmp(argv[1],"trianglep")==0)
1.220 + {
1.221 + printf("I shall now compute the triangle of %s using a parallel algorithm: ", argv[2]);
1.222 + fflush(stdout);
1.223 + setenv("TRIANGLE_BASE", "1", 0);
1.224 + ret=triangle_parallel(argv[0], argv[2]);
1.225 + printf("it's %d\n", ret);
1.226 + }
1.227 +
1.228 + printf("Farewell...\nPress a key");
1.229 + getchar();
1.230 + return ret;
1.231 + }