Fix a *critical* bug in the task exit logic. Implements SIGCHILD

git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@5513 42af7a65-404d-4744-a932-0658087f49c3

4 files changed, 29 insertions, 3 deletions

diff --git a/nuttx/configs/stm32f4discovery/README.txt b/nuttx/configs/stm32f4discovery/README.txt
index c1d484279..39fb41d78 100644
--- a/nuttx/configs/stm32f4discovery/README.txt
+++ b/nuttx/configs/stm32f4discovery/README.txt
@@ -1447,6 +1447,32 @@ Where <subdir> is one of the following:
     STANDBY mode.  This used of the RTC alarm could conflict with other uses of
     the RTC alarm in your application.
 
+
+  posix_spawn:
+  ------------
+    This configuration directory, performs a simple test os the posix_spawn
+    interface using apps/examples/posix_spawn.
+
+    NOTES:
+ 
+    1. This configuration uses the mconf-based configuration tool.  To
+       change this configuration using that tool, you should:
+
+       a. Build and install the kconfig-mconf tool.  See nuttx/README.txt
+          and misc/tools/
+
+       b. Execute 'make menuconfig' in nuttx/ in order to start the
+          reconfiguration process.
+
+    2. Default toolchain:
+
+       CONFIG_HOST_WINDOWS=y         : Builds under windows
+       CONFIG_WINDOWS_CYGWIN=y       : Using Cygwin and
+       CONFIG_STM32_CODESOURCERYW=y  : The native Windows CodeSourcery toolchain
+
+    3. By default, this project assumes that you are *NOT* using the DFU
+       bootloader.
+ 
   winbuild:
   --------
 
diff --git a/nuttx/configs/stm32f4discovery/nsh/defconfig b/nuttx/configs/stm32f4discovery/nsh/defconfig
index 8967fd01c..98034e22e 100644
--- a/nuttx/configs/stm32f4discovery/nsh/defconfig
+++ b/nuttx/configs/stm32f4discovery/nsh/defconfig
@@ -282,7 +282,7 @@ CONFIG_SCHED_WORKQUEUE=n
 CONFIG_SCHED_WORKPRIORITY=192
 CONFIG_SCHED_WORKPERIOD=50000
 CONFIG_SCHED_WORKSTACKSIZE=1024
-CONFIG_SIG_SIGWORK=4
+CONFIG_SIG_SIGWORK=17
 CONFIG_SCHED_WAITPID=y
 CONFIG_SCHED_ATEXIT=n
 
diff --git a/nuttx/configs/stm32f4discovery/pm/defconfig b/nuttx/configs/stm32f4discovery/pm/defconfig
index 105eb4d37..3e24168cd 100644
--- a/nuttx/configs/stm32f4discovery/pm/defconfig
+++ b/nuttx/configs/stm32f4discovery/pm/defconfig
@@ -283,7 +283,7 @@ CONFIG_SCHED_WORKQUEUE=y
 CONFIG_SCHED_WORKPRIORITY=192
 CONFIG_SCHED_WORKPERIOD=50000
 CONFIG_SCHED_WORKSTACKSIZE=1024
-CONFIG_SIG_SIGWORK=4
+CONFIG_SIG_SIGWORK=17
 CONFIG_SCHED_WAITPID=y
 CONFIG_SCHED_ATEXIT=n
 
diff --git a/nuttx/configs/stm32f4discovery/posix_spawn/defconfig b/nuttx/configs/stm32f4discovery/posix_spawn/defconfig
index b908393d8..9e30ada8a 100644
--- a/nuttx/configs/stm32f4discovery/posix_spawn/defconfig
+++ b/nuttx/configs/stm32f4discovery/posix_spawn/defconfig
@@ -441,7 +441,7 @@ CONFIG_EOL_IS_EITHER_CRLF=y
 CONFIG_LIBC_EXECFUNCS=y
 CONFIG_EXECFUNCS_SYMTAB="exports"
 CONFIG_EXECFUNCS_NSYMBOLS=10
-CONFIG_POSIX_SPAWN_STACKSIZE=768
+CONFIG_POSIX_SPAWN_STACKSIZE=1024
 # CONFIG_LIBC_STRERROR is not set
 # CONFIG_LIBC_PERROR_STDOUT is not set
 CONFIG_ARCH_LOWPUTC=y