mirror of
git://nv-tegra.nvidia.com/linux-nvgpu.git
synced 2025-12-22 17:36:20 +03:00
4e41a0b199
MISRA Rule-17.7 requires the return value of all functions to be used. Fix is either to use the return value or change the function to return void. This patch contains fix for all 17.7 violations instandard C functions in OS/Posix interface. JIRA NVGPU-1036 Change-Id: I2da417edc992f16de24cdff536c0538f1fde8b61 Signed-off-by: Nicolas Benech <nbenech@nvidia.com> Reviewed-on: https://git-master.nvidia.com/r/1929901 Reviewed-by: Automatic_Commit_Validation_User Reviewed-by: svc-mobile-coverity <svc-mobile-coverity@nvidia.com> Reviewed-by: svc-misra-checker <svc-misra-checker@nvidia.com> GVS: Gerrit_Virtual_Submit Reviewed-by: Alex Waterman <alexw@nvidia.com> Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com> Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
98 lines
2.8 KiB
C
98 lines
2.8 KiB
C
/*
|
|
* Copyright (c) 2018, NVIDIA CORPORATION. All rights reserved.
|
|
*
|
|
* Permission is hereby granted, free of charge, to any person obtaining a
|
|
* copy of this software and associated documentation files (the "Software"),
|
|
* to deal in the Software without restriction, including without limitation
|
|
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
|
|
* and/or sell copies of the Software, and to permit persons to whom the
|
|
* Software is furnished to do so, subject to the following conditions:
|
|
*
|
|
* The above copyright notice and this permission notice shall be included in
|
|
* all copies or substantial portions of the Software.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
|
|
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
|
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
|
|
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
|
|
* DEALINGS IN THE SOFTWARE.
|
|
*/
|
|
|
|
#include <nvgpu/bug.h>
|
|
#include <nvgpu/thread.h>
|
|
|
|
#include <nvgpu/posix/thread.h>
|
|
|
|
/**
|
|
* Use pthreads to mostly emulate the Linux kernel APIs. There are some things
|
|
* that are quite different - especially the stop/should_stop notions. In user
|
|
* space threads can send signals to one another but of course within the kernel
|
|
* that is not as simple.
|
|
*
|
|
* This could use some nice debugging some day as well.
|
|
*/
|
|
|
|
/*
|
|
* nvgpu thread functions return int. POSIX threads return void *. This little
|
|
* wrapper takes the int returning nvgpu thread and instead passes that int back
|
|
* through the void * pointer.
|
|
*/
|
|
static void *__nvgpu_posix_thread_wrapper(void *data)
|
|
{
|
|
struct nvgpu_posix_thread_data *nvgpu = data;
|
|
|
|
return ERR_PTR(nvgpu->fn(nvgpu->data));
|
|
}
|
|
|
|
int nvgpu_thread_create(struct nvgpu_thread *thread,
|
|
void *data,
|
|
int (*threadfn)(void *data), const char *name)
|
|
{
|
|
int ret;
|
|
|
|
BUG_ON(thread->running);
|
|
|
|
(void) memset(thread, 0, sizeof(*thread));
|
|
|
|
/*
|
|
* By subtracting 1 the above memset ensures that we have a zero
|
|
* terminated string.
|
|
*/
|
|
(void) strncpy(thread->tname, name,
|
|
NVGPU_THREAD_POSIX_MAX_NAMELEN - 1);
|
|
|
|
thread->nvgpu.data = data;
|
|
thread->nvgpu.fn = threadfn;
|
|
|
|
ret = pthread_create(&thread->thread, NULL,
|
|
__nvgpu_posix_thread_wrapper,
|
|
&thread->nvgpu);
|
|
if (ret != 0)
|
|
return ret;
|
|
|
|
#ifdef _GNU_SOURCE
|
|
pthread_setname_np(thread->thread, thread->tname);
|
|
#endif
|
|
|
|
thread->running = true;
|
|
|
|
return 0;
|
|
}
|
|
|
|
void nvgpu_thread_stop(struct nvgpu_thread *thread)
|
|
{
|
|
thread->should_stop = true;
|
|
}
|
|
|
|
bool nvgpu_thread_should_stop(struct nvgpu_thread *thread)
|
|
{
|
|
return thread->should_stop;
|
|
}
|
|
|
|
bool nvgpu_thread_is_running(struct nvgpu_thread *thread)
|
|
{
|
|
return thread->running;
|
|
}
|