e24f281401
The three fixes are to handle cases in the SMP configuration where one CPU does need to make modifications to TCB and data structures on a task that could be running running on another CPU. Those three cases are task_delete(), task_restart(), and execution of signal handles. In all three cases the solutions is basically the same: (1) Call sched_cpu_pause(tcb) to pause the CPU on which the task is running, (2) perform the necessary operations, then (3) call up_cpu_resume() to restart the paused CPU.
73 lines
2.5 KiB
Plaintext
73 lines
2.5 KiB
Plaintext
############################################################################
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# sched/task/Make.defs
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#
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# Copyright (C) 2014 Gregory Nutt. All rights reserved.
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# Author: Gregory Nutt <gnutt@nuttx.org>
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions
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# are met:
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#
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# 1. Redistributions of source code must retain the above copyright
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# notice, this list of conditions and the following disclaimer.
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# 2. Redistributions in binary form must reproduce the above copyright
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# notice, this list of conditions and the following disclaimer in
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# the documentation and/or other materials provided with the
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# distribution.
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# 3. Neither the name NuttX nor the names of its contributors may be
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# used to endorse or promote products derived from this software
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# without specific prior written permission.
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#
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# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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# FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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# COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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# BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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# OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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# AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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# POSSIBILITY OF SUCH DAMAGE.
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#
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############################################################################
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CSRCS += task_create.c task_init.c task_setup.c task_activate.c
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CSRCS += task_start.c task_delete.c task_exit.c task_exithook.c
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CSRCS += task_recover.c task_restart.c task_spawnparms.c task_terminate.c
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CSRCS += task_getgroup.c task_prctl.c task_getpid.c exit.c
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ifeq ($(CONFIG_ARCH_HAVE_VFORK),y)
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ifeq ($(CONFIG_SCHED_WAITPID),y)
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CSRCS += task_vfork.c
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endif
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endif
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ifneq ($(CONFIG_BUILD_KERNEL),y)
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CSRCS += task_spawn.c
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endif
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ifneq ($(CONFIG_BINFMT_DISABLE),y)
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ifeq ($(CONFIG_LIBC_EXECFUNCS),y)
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CSRCS += task_execv.c task_posixspawn.c
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endif
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endif
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ifeq ($(CONFIG_SCHED_STARTHOOK),y)
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CSRCS += task_starthook.c
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endif
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ifeq ($(CONFIG_SCHED_ATEXIT),y)
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CSRCS += task_atexit.c
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endif
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ifeq ($(CONFIG_SCHED_ONEXIT),y)
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CSRCS += task_onexit.c
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endif
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# Include task build support
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DEPPATH += --dep-path task
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VPATH += :task
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