Minor changes to make OS test more robust in the presence of many memory allocation failures

git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@5672 42af7a65-404d-4744-a932-0658087f49c3

configs/nutiny-nuc120/ostest/defconfig

@@ -272,7 +272,7 @@ CONFIG_SIG_SIGCONDTIMEDOUT=16
 #
 # Sizes of configurable things (0 disables)
 #
-CONFIG_MAX_TASKS=16
+CONFIG_MAX_TASKS=8
 CONFIG_MAX_TASK_ARGS=4
 CONFIG_NPTHREAD_KEYS=4
 CONFIG_NFILE_DESCRIPTORS=8
@@ -288,9 +288,9 @@ CONFIG_PREALLOC_TIMERS=4
 # Stack and heap information
 #
 CONFIG_IDLETHREAD_STACKSIZE=1024
-CONFIG_USERMAIN_STACKSIZE=2048
+CONFIG_USERMAIN_STACKSIZE=1536
 CONFIG_PTHREAD_STACK_MIN=256
-CONFIG_PTHREAD_STACK_DEFAULT=2048
+CONFIG_PTHREAD_STACK_DEFAULT=1536
 
 #
 # Device Drivers
@@ -397,7 +397,7 @@ CONFIG_SYMTAB_ORDEREDBYNAME=y
 #
 # Standard C Library Options
 #
-CONFIG_STDIO_BUFFER_SIZE=64
+CONFIG_STDIO_BUFFER_SIZE=0
 CONFIG_STDIO_LINEBUFFER=y
 CONFIG_NUNGET_CHARS=2
 # CONFIG_LIBM is not set
@@ -409,7 +409,7 @@ CONFIG_NUNGET_CHARS=2
 CONFIG_EOL_IS_EITHER_CRLF=y
 # CONFIG_LIBC_EXECFUNCS is not set
 CONFIG_POSIX_SPAWN_PROXY_STACKSIZE=1024
-CONFIG_TASK_SPAWN_DEFAULT_STACKSIZE=2048
+CONFIG_TASK_SPAWN_DEFAULT_STACKSIZE=1536
 # CONFIG_LIBC_STRERROR is not set
 # CONFIG_LIBC_PERROR_STDOUT is not set
 CONFIG_ARCH_LOWPUTC=y
@@ -469,7 +469,7 @@ CONFIG_LIB_SENDFILE_BUFSIZE=512
 CONFIG_EXAMPLES_OSTEST=y
 # CONFIG_EXAMPLES_OSTEST_BUILTIN is not set
 CONFIG_EXAMPLES_OSTEST_LOOPS=1
-CONFIG_EXAMPLES_OSTEST_STACKSIZE=2048
+CONFIG_EXAMPLES_OSTEST_STACKSIZE=1536
 CONFIG_EXAMPLES_OSTEST_NBARRIER_THREADS=3
 CONFIG_EXAMPLES_OSTEST_RR_RANGE=10000
 CONFIG_EXAMPLES_OSTEST_RR_RUNS=10
@@ -493,10 +493,6 @@ CONFIG_EXAMPLES_OSTEST_RR_RUNS=10
 # CONFIG_EXAMPLES_USBTERM is not set
 # CONFIG_EXAMPLES_WATCHDOG is not set
 
-#
-# Interpreters
-#
-
 #
 # Interpreters
 #
@@ -524,10 +520,6 @@ CONFIG_EXAMPLES_OSTEST_RR_RUNS=10
 # CONFIG_NETUTILS_UIPLIB is not set
 # CONFIG_NETUTILS_WEBCLIENT is not set
 
-#
-# ModBus
-#
-
 #
 # FreeModbus
 #

sched/group_join.c

@@ -116,6 +116,7 @@ static inline int group_addmember(FAR struct task_group_s *group, pid_t pid)
 
       if (!newmembers)
         {
+          sdbg("ERROR: Failed to reallocate tg_members\n");
           return -ENOMEM;
         }
 

sched/group_leave.c

@@ -245,7 +245,7 @@ static inline void group_release(FAR struct task_group_s *group)
  *****************************************************************************/
 
 #ifdef HAVE_GROUP_MEMBERS
-static inline int group_removemember(FAR struct task_group_s *group, pid_t pid)
+static inline void group_removemember(FAR struct task_group_s *group, pid_t pid)
 {
   irqstate_t flags;
   int i;
@@ -269,12 +269,8 @@ static inline int group_removemember(FAR struct task_group_s *group, pid_t pid)
           group->tg_members[i] = group->tg_members[group->tg_nmembers - 1];
           group->tg_nmembers--;
           irqrestore(flags);
-
-          return group->tg_nmembers;
         }
     }
-
-  return -ENOENT;
 }
 #endif /* HAVE_GROUP_MEMBERS */
 
@@ -310,21 +306,24 @@ void group_leave(FAR struct tcb_s *tcb)
 
   DEBUGASSERT(tcb);
 
-  /* Make sure that we have a group */
+  /* Make sure that we have a group. */
 
   group = tcb->group;
   if (group)
     {
-      /* Remove the member from group */
+      /* Remove the member from group.  This function may be called
+       * during certain error handling before the PID has been
+       * added to the group.  In this case tcb->pid will be uninitialized
+       * group_removemember() will fail.
+       */
 
-      int ret = group_removemember(group, tcb->pid);
-      DEBUGASSERT(ret >= 0);
+      group_removemember(group, tcb->pid);
 
-      /* Is the group now empty? */
+      /* Have all of the members left the group? */
 
-      if (ret == 0)
+      if (group->tg_nmembers == 0)
         {
-          /* Release all of the resource held by the task group */
+          /* Yes.. Release all of the resource held by the task group */
 
           group_release(group);
         }