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/*
* Copyright (c) 2014 Nicira, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at:
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <config.h>
#include <errno.h>
#include <psapi.h>
#include <sys/resource.h>
#include <time.h>
#include "util.h"
#include "openvswitch/vlog.h"
VLOG_DEFINE_THIS_MODULE(getrusage_windows);
static void
usage_to_timeval(FILETIME *ft, struct timeval *tv)
{
ULARGE_INTEGER time;
time.LowPart = ft->dwLowDateTime;
time.HighPart = ft->dwHighDateTime;
tv->tv_sec = time.QuadPart / 10000000;
tv->tv_usec = (time.QuadPart % 10000000) / 10;
}
int
getrusage(int who, struct rusage *usage)
{
FILETIME creation_time, exit_time, kernel_time, user_time;
PROCESS_MEMORY_COUNTERS pmc;
memset(usage, 0, sizeof(struct rusage));
if (who == RUSAGE_SELF) {
if (!GetProcessTimes(GetCurrentProcess(), &creation_time, &exit_time,
&kernel_time, &user_time)) {
VLOG_ERR("failed at GetProcessTimes: %s",
ovs_lasterror_to_string());
return -1;
}
if (!GetProcessMemoryInfo(GetCurrentProcess(), &pmc, sizeof(pmc))) {
VLOG_ERR("failed at GetProcessMemoryInfo: %s",
ovs_lasterror_to_string());
return -1;
}
usage_to_timeval(&kernel_time, &usage->ru_stime);
usage_to_timeval(&user_time, &usage->ru_utime);
usage->ru_majflt = pmc.PageFaultCount;
usage->ru_maxrss = pmc.PeakWorkingSetSize / 1024;
return 0;
} else if (who == RUSAGE_THREAD) {
if (!GetThreadTimes(GetCurrentThread(), &creation_time, &exit_time,
&kernel_time, &user_time)) {
VLOG_ERR("failed at GetThreadTimes: %s",
ovs_lasterror_to_string());
return -1;
}
usage_to_timeval(&kernel_time, &usage->ru_stime);
usage_to_timeval(&user_time, &usage->ru_utime);
return 0;
} else {
return -1;
}
}
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