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800d96865d
MISRA rule 15.6 requires that all if/else/loop blocks should be enclosed by brackets. This patch adds brackets to single line if/else/loop blocks in the POSIX code. JIRA NVGPU-775 Change-Id: Idafd5a5068c23b850ad1b0b083550a75b35588c1 Signed-off-by: Adeel Raza <araza@nvidia.com> Reviewed-on: https://git-master.nvidia.com/r/2011739 Reviewed-by: svc-misra-checker <svc-misra-checker@nvidia.com> Reviewed-by: Scott Long <scottl@nvidia.com> Reviewed-by: Alex Waterman <alexw@nvidia.com> Reviewed-by: svc-mobile-coverity <svc-mobile-coverity@nvidia.com> Reviewed-by: svc-mobile-misra <svc-mobile-misra@nvidia.com> GVS: Gerrit_Virtual_Submit Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com> Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
114 lines
3.1 KiB
C
114 lines
3.1 KiB
C
/*
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* Copyright (c) 2018-2019, NVIDIA CORPORATION. All rights reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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* DEALINGS IN THE SOFTWARE.
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*/
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#include <nvgpu/bug.h>
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#include <nvgpu/thread.h>
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#include <nvgpu/posix/thread.h>
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/**
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* Use pthreads to mostly emulate the Linux kernel APIs. There are some things
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* that are quite different - especially the stop/should_stop notions. In user
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* space threads can send signals to one another but of course within the kernel
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* that is not as simple.
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*
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* This could use some nice debugging some day as well.
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*/
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/*
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* nvgpu thread functions return int. POSIX threads return void *. This little
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* wrapper takes the int returning nvgpu thread and instead passes that int back
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* through the void * pointer.
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*/
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static void *__nvgpu_posix_thread_wrapper(void *data)
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{
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struct nvgpu_posix_thread_data *nvgpu = data;
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return ERR_PTR(nvgpu->fn(nvgpu->data));
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}
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int nvgpu_thread_create(struct nvgpu_thread *thread,
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void *data,
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int (*threadfn)(void *data), const char *name)
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{
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int ret;
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BUG_ON(thread->running);
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(void) memset(thread, 0, sizeof(*thread));
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/*
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* By subtracting 1 the above memset ensures that we have a zero
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* terminated string.
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*/
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(void) strncpy(thread->tname, name,
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NVGPU_THREAD_POSIX_MAX_NAMELEN - 1);
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thread->nvgpu.data = data;
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thread->nvgpu.fn = threadfn;
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ret = pthread_create(&thread->thread, NULL,
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__nvgpu_posix_thread_wrapper,
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&thread->nvgpu);
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if (ret != 0) {
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return ret;
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}
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#ifdef _GNU_SOURCE
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pthread_setname_np(thread->thread, thread->tname);
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#endif
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thread->running = true;
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return 0;
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}
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void nvgpu_thread_stop(struct nvgpu_thread *thread)
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{
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thread->should_stop = true;
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}
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void nvgpu_thread_stop_graceful(struct nvgpu_thread *thread,
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void (*thread_stop_fn)(void *data), void *data)
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{
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thread->should_stop = true;
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if (thread_stop_fn != NULL) {
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thread_stop_fn(data);
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}
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nvgpu_thread_join(thread);
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}
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bool nvgpu_thread_should_stop(struct nvgpu_thread *thread)
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{
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return thread->should_stop;
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}
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bool nvgpu_thread_is_running(struct nvgpu_thread *thread)
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{
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return thread->running;
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}
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void nvgpu_thread_join(struct nvgpu_thread *thread)
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{
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(void) pthread_join(thread->thread, NULL);
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}
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