88 lines
3.3 KiB
C
88 lines
3.3 KiB
C
/*
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* Copyright (c) 2013-2019 Huawei Technologies Co., Ltd. All rights reserved.
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* Copyright (c) 2020-2021 Huawei Device Co., Ltd. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without modification,
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* are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice, this list of
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* conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright notice, this list
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* of conditions and the following disclaimer in the documentation and/or other materials
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* provided with the distribution.
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*
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* 3. Neither the name of the copyright holder nor the names of its contributors may be used
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* to endorse or promote products derived from this software without specific prior written
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* 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 LIMITED TO,
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* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
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* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
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* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
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* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "proc_fs.h"
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#include "time.h"
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#include "errno.h"
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#include "los_cpup.h"
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#define MSEC_TO_NSEC 1000000
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#define SEC_TO_MSEC 1000
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#define DECIMAL_TO_PERCENT 100
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static int UptimeProcFill(struct SeqBuf *seqBuf, void *v)
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{
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struct timespec curtime = {0, 0};
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int ret;
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#ifdef LOSCFG_KERNEL_CPUP
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float idleRate;
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float idleMSec;
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float usage;
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#endif
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ret = clock_gettime(CLOCK_MONOTONIC, &curtime);
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if (ret < 0) {
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PRINT_ERR("clock_gettime error!\n");
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return -get_errno();
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}
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#ifdef LOSCFG_KERNEL_CPUP
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usage = (float)LOS_HistorySysCpuUsage(CPUP_ALL_TIME);
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idleRate = LOSCFG_KERNEL_CORE_NUM - usage / LOS_CPUP_PRECISION_MULT / DECIMAL_TO_PERCENT;
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idleMSec = ((float)curtime.tv_sec * SEC_TO_MSEC + curtime.tv_nsec / MSEC_TO_NSEC) * idleRate;
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(void)LosBufPrintf(seqBuf, "%llu.%03llu %llu.%03llu\n", (unsigned long long)curtime.tv_sec,
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(unsigned long long)(curtime.tv_nsec / MSEC_TO_NSEC),
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(unsigned long long)(idleMSec / SEC_TO_MSEC),
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(unsigned long long)((unsigned long long)idleMSec % SEC_TO_MSEC));
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#else
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(void)LosBufPrintf(seqBuf, "%llu.%03llu\n", (unsigned long long)curtime.tv_sec,
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(unsigned long long)(curtime.tv_nsec / MSEC_TO_NSEC));
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#endif
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return 0;
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}
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static const struct ProcFileOperations UPTIME_PROC_FOPS = {
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.read = UptimeProcFill,
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};
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void ProcUptimeInit(void)
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{
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struct ProcDirEntry *pde = CreateProcEntry("uptime", 0, NULL);
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if (pde == NULL) {
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PRINT_ERR("creat /proc/uptime error!\n");
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return;
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}
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pde->procFileOps = &UPTIME_PROC_FOPS;
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}
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