From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from sog-mx-4.v43.ch3.sourceforge.com ([172.29.43.194] helo=mx.sourceforge.net) by sfs-ml-2.v29.ch3.sourceforge.com with esmtp (Exim 4.76) (envelope-from ) id 1TMY5c-0001py-2c for ltp-list@lists.sourceforge.net; Fri, 12 Oct 2012 05:47:16 +0000 Received: from [222.73.24.84] (helo=song.cn.fujitsu.com) by sog-mx-4.v43.ch3.sourceforge.com with esmtp (Exim 4.76) id 1TMY5a-0006VS-33 for ltp-list@lists.sourceforge.net; Fri, 12 Oct 2012 05:47:16 +0000 Received: from fnstmail02.fnst.cn.fujitsu.com (tang.cn.fujitsu.com [127.0.0.1]) by tang.cn.fujitsu.com (8.14.3/8.13.1) with ESMTP id q9C5NF3C032631 for ; Fri, 12 Oct 2012 13:23:19 +0800 Message-ID: <5077A8F8.6050609@cn.fujitsu.com> Date: Fri, 12 Oct 2012 13:22:00 +0800 From: DAN LI MIME-Version: 1.0 Subject: [LTP] [PATCH v5] pthread_cond_brodcast/1-2.c hung when mem left is not enough List-Id: Linux Test Project General Discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: ltp-list-bounces@lists.sourceforge.net To: LTP list pthread_cond_brodcast/1-2.c try to create as many childrens(thread or process) as possible,however,if current free memory is exhausted before all childrens are started,the case will timeout and hung since it's stated with program "t0". Signed-off-by: DAN LI --- .../interfaces/pthread_cond_broadcast/1-2.c | 40 +++++++++++++++++++--- testcases/open_posix_testsuite/include/mem_info.h | 40 ++++++++++++++++++++++ 2 files changed, 76 insertions(+), 4 deletions(-) create mode 100644 testcases/open_posix_testsuite/include/mem_info.h diff --git a/testcases/open_posix_testsuite/conformance/interfaces/pthread_cond_broadcast/1-2.c b/testcases/open_posix_testsuite/conformance/interfaces/pthread_cond_broadcast/1-2.c index f6ad9df..6b27f40 100644 --- a/testcases/open_posix_testsuite/conformance/interfaces/pthread_cond_broadcast/1-2.c +++ b/testcases/open_posix_testsuite/conformance/interfaces/pthread_cond_broadcast/1-2.c @@ -49,6 +49,7 @@ #include #include +#include "mem_info.h" #include "../testfrmw/testfrmw.h" #include "../testfrmw/testfrmw.c" @@ -82,8 +83,8 @@ #endif /* Do not create more than this amount of children: */ -#define MAX_PROCESS_CHILDREN (200) -#define MAX_THREAD_CHILDREN (1000) +static int max_process_children = 200; +static int max_thread_children = 1000; #define TIMEOUT (180) @@ -243,6 +244,35 @@ void *timer(void *arg) return NULL; /* For compiler */ } +static void children_number(void) +{ + struct sysinfo sysinformation; + int avail_number; + unsigned long freeram; + unsigned long per_process; + unsigned long min_stack; + + min_stack = sysconf(_SC_THREAD_STACK_MIN); + + freeram = getfreeram(); + if (freeram == 0) + return; + + per_process = min_stack * max_thread_children; + if (per_process > freeram) + UNTESTED("Not enough memory."); + + avail_number = freeram / per_process; + + if (avail_number < 10) + UNTESTED("Not enough memory."); + + max_process_children = (avail_number < max_process_children ? + avail_number : max_process_children); + + return; +} + int main(int argc, char *argv[]) { int ret; @@ -268,6 +298,8 @@ int main(int argc, char *argv[]) output_init(); + children_number(); + /* check the system abilities */ pshared = sysconf(_SC_THREAD_PROCESS_SHARED); cs = sysconf(_SC_CLOCK_SELECTION); @@ -476,7 +508,7 @@ int main(int argc, char *argv[]) } else { ret = errno; } - } while ((ret == 0) && (child_count < MAX_THREAD_CHILDREN)); + } while ((ret == 0) && (child_count < max_thread_children)); #if VERBOSE > 2 output("[parent] Created %i children threads\n", child_count); #endif @@ -504,7 +536,7 @@ int main(int argc, char *argv[]) } else { ret = errno; } - } while ((ret == 0) && (child_count < MAX_PROCESS_CHILDREN)); + } while ((ret == 0) && (child_count < max_process_children)); #if VERBOSE > 2 output("[parent] Created %i children processes\n", child_count); #endif diff --git a/testcases/open_posix_testsuite/include/mem_info.h b/testcases/open_posix_testsuite/include/mem_info.h new file mode 100644 index 0000000..1669216 --- /dev/null +++ b/testcases/open_posix_testsuite/include/mem_info.h @@ -0,0 +1,40 @@ +/* + * + * Copyright (c) 2012, DAN LI + * + * This program is free software; you can redistribute it and/or modify + * it under the terms in version 2 of the GNU General Public License as + * published by the Free Software Foundation. + * + * This program 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 General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + * + * Author: DAN LI + * Date: 10/12/2012 + */ + +#ifdef __linux__ +#include + +static int getfreeram(void) +{ + int ret; + struct sysinfo sysinformation; + + ret = sysinfo(&sysinformation); + if (ret != 0) + return 0; + return sysinformation.freeram; +} +#else +static int getfreeram(void) +{ + return 0; +} +#endif -- 1.7.12 ------------------------------------------------------------------------------ Don't let slow site performance ruin your business. 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