From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from sog-mx-1.v43.ch3.sourceforge.com ([172.29.43.191] helo=mx.sourceforge.net) by sfs-ml-1.v29.ch3.sourceforge.com with esmtp (Exim 4.76) (envelope-from ) id 1Sya5m-0005vB-4M for ltp-list@lists.sourceforge.net; Tue, 07 Aug 2012 03:04:22 +0000 Received: from [222.73.24.84] (helo=song.cn.fujitsu.com) by sog-mx-1.v43.ch3.sourceforge.com with esmtp (Exim 4.76) id 1Sya5k-0005AD-R8 for ltp-list@lists.sourceforge.net; Tue, 07 Aug 2012 03:04:22 +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 q7733lKQ011617 for ; Tue, 7 Aug 2012 11:04:14 +0800 Message-ID: <50208562.3030401@cn.fujitsu.com> Date: Tue, 07 Aug 2012 11:02:58 +0800 From: Wanlong Gao MIME-Version: 1.0 References: <501A3EA1.4010902@cn.fujitsu.com> <501F8DA0.6030104@cn.fujitsu.com> <50207F19.5080105@cn.fujitsu.com> In-Reply-To: <50207F19.5080105@cn.fujitsu.com> Subject: Re: [LTP] [PATCH v2] pthread_cond_brodcast/1-2.c hung when mem left is not enough Reply-To: gaowanlong@cn.fujitsu.com 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: DAN LI Cc: LTP list On 08/07/2012 10:36 AM, DAN LI wrote: > 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 | 39 ++++++++++++++++++-- > 1 files changed, 35 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..a31dc2b 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) > > @@ -242,6 +243,34 @@ void *timer(void *arg) > FAILED_KILLALL("Operation timed out. A signal was lost."); > return NULL; /* For compiler */ > } > +static int decide_process_children_count(void) > +{ > + struct sysinfo sysinforma; > + int ret; > + int avail_count; > + unsigned long memper; > + unsigned long min_stack; > + > + min_stack = sysconf(_SC_THREAD_STACK_MIN); > + > + ret = sysinfo(&sysinforma); This is a linux specific function, so you can define this function like this #ifdef __linux__ static void decide_xxx(void) { xxx xxx } #else static void decide_xxx(void) { return; } #endif Thanks, Wanlong Gao > + if (ret != 0) > + UNRESOLVED(ret, "Failed to get system infomation."); > + > + memper = min_stack * max_thread_children; > + if (memper > sysinforma.freeram) > + UNTESTED("Free ram not enough for test."); > + > + avail_count = sysinforma.freeram / memper; > + > + if (avail_count < 10) > + UNTESTED("Free ram not enough for test."); > + > + max_process_children = (avail_count < max_process_children ? > + avail_count : max_process_children); > + > + return 0; > +} > > int main(int argc, char *argv[]) > { > @@ -268,6 +297,8 @@ int main(int argc, char *argv[]) > > output_init(); > > + decide_process_children_count(); > + > /* check the system abilities */ > pshared = sysconf(_SC_THREAD_PROCESS_SHARED); > cs = sysconf(_SC_CLOCK_SELECTION); > @@ -476,7 +507,7 @@ 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 +535,7 @@ 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 > -- > 1.7.7.6 > ------------------------------------------------------------------------------ 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