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-4.v29.ch3.sourceforge.com with esmtp (Exim 4.76) (envelope-from ) id 1Szi0G-0004rD-Qz for ltp-list@lists.sourceforge.net; Fri, 10 Aug 2012 05:43:20 +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 1Szi0E-0005oJ-SY for ltp-list@lists.sourceforge.net; Fri, 10 Aug 2012 05:43:20 +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 q7A572u3024169 for ; Fri, 10 Aug 2012 13:07:04 +0800 Message-ID: <502496C6.3090906@cn.fujitsu.com> Date: Fri, 10 Aug 2012 13:06:14 +0800 From: DAN LI MIME-Version: 1.0 Subject: [LTP] [PATCH v4] 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". The patch adjust count of childrens according to judgement of size of current free memory. Signed-off-by: DAN LI --- .../interfaces/pthread_cond_broadcast/1-2.c | 47 ++++++++++++++++++-- 1 file changed, 43 insertions(+), 4 deletions(-) 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..897448c 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 @@ -48,6 +48,7 @@ #include #include #include +#include #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 +244,42 @@ void *timer(void *arg) return NULL; /* For compiler */ } +#ifdef __linux__ +static void children_number(void) +{ + struct sysinfo sysinformation; + int ret; + int avail_number; + unsigned long per_process; + unsigned long min_stack; + + min_stack = sysconf(_SC_THREAD_STACK_MIN); + + ret = sysinfo(&sysinformation); + if (ret != 0) + UNRESOLVED(ret, "Failed to get system information."); + + per_process = min_stack * max_thread_children; + if (per_process > sysinformation.freeram) + UNTESTED("Not enough memory."); + + avail_number = sysinformation.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; +} +#else +static void children_number(void) +{ + return; +} +#endif + int main(int argc, char *argv[]) { int ret; @@ -268,6 +305,8 @@ 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 +515,7 @@ 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 +543,7 @@ 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 -- 1.7.10.2 ------------------------------------------------------------------------------ Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ _______________________________________________ Ltp-list mailing list Ltp-list@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/ltp-list