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Add conditional compilation to eliminate or limit cloning of descriptors when a new task is created

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git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@1886 42af7a65-404d-4744-a932-0658087f49c3
This commit is contained in:
patacongo
2009-06-15 21:44:27 +00:00
parent e9711ca1a7
commit e29fdf0267
54 changed files with 1505 additions and 85 deletions
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configs/ez80f910200zco/httpd/defconfig
+27 -11
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@@ -212,17 +212,30 @@ CONFIG_HAVE_LIBM=n
# CONFIG_PRIORITY_INHERITANCE : Set to enable support for priority
# inheritance on mutexes and semaphores.
# CONFIG_SEM_PREALLOCHOLDERS: This setting is only used if priority
# inheritance is enabled. It defines the maximum number of different
# threads (minus one) that can take counts on a semaphore with priority
# inheritance support. This may be set to zero if priority inheritance
# is disabled OR if you are only using semaphores as mutexes (only
# one holder) OR if no more than two threads participate using a
# counting semaphore.
# CONFIG_SEM_NNESTPRIO. If priority inheritance is enabled, then this
# setting is the maximum number of higher priority threads (minus 1)
# than can be waiting for another thread to release a count on a
# semaphore. This value may be set to zero if no more than one
# thread is expected to wait for a semaphore.
# inheritance is enabled. It defines the maximum number of
# different threads (minus one) that can take counts on a
# semaphore with priority inheritance support. This may be
# set to zero if priority inheritance is disabled OR if you
# are only using semaphores as mutexes (only one holder) OR
# if no more than two threads participate using a counting
# semaphore.
# CONFIG_SEM_NNESTPRIO. If priority inheritance is enabled,
# then this setting is the maximum number of higher priority
# threads (minus 1) than can be waiting for another thread
# to release a count on a semaphore. This value may be set
# to zero if no more than one thread is expected to wait for
# a semaphore.
# CONFIG_FDCLONE_DISABLE. Disable cloning of all file descriptors
# by task_create() when a new task is started. If set, all
# files/drivers will appear to be closed in the new task.
# CONFIG_FDCLONE_STDIO. Disable cloning of all but the first
# three file descriptors (stdin, stdout, stderr) by task_create()
# when a new task is started. If set, all files/drivers will
# appear to be closed in the new task except for stdin, stdout,
# and stderr.
# CONFIG_SDCLONE_DISABLE. Disable cloning of all socket
# desciptors by task_create() when a new task is started. If
# set, all sockets will appear to be closed in the new task.
#
CONFIG_EXAMPLE=uip
CONFIG_DEBUG=y
@@ -244,6 +257,9 @@ CONFIG_MUTEX_TYPES=n
CONFIG_PRIORITY_INHERITANCE=n
CONFIG_SEM_PREALLOCHOLDERS=0
CONFIG_SEM_NNESTPRIO=0
CONFIG_FDCLONE_DISABLE=n
CONFIG_FDCLONE_STDIO=n
CONFIG_SDCLONE_DISABLE=y
#
# The following can be used to disable categories of