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/*
* Copyright (C) 2019 Metrological Group B.V.
* Copyright (C) 2019 Igalia S.L.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#pragma once
#if OS(LINUX)
#include <sys/resource.h>
#include <wtf/linux/CurrentProcessMemoryStatus.h>
struct ProcessMemoryFootprint {
uint64_t current;
uint64_t peak;
static ProcessMemoryFootprint now()
{
struct rusage ru;
getrusage(RUSAGE_SELF, &ru);
ProcessMemoryStatus ps;
currentProcessMemoryStatus(ps);
return { ps.resident, static_cast<uint64_t>(ru.ru_maxrss) * 1024 };
}
static void resetPeak()
{
// To reset the peak size, we need to write 5 to /proc/self/clear_refs
// as described in `man -s5 proc`, in the clear_refs section.
// Only available since 4.0.
FILE* f = fopen("/proc/self/clear_refs", "w");
if (!f)
return;
fwrite("5", 1, 1, f);
fclose(f);
}
};
#endif
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