74 lines
2.5 KiB
C++
74 lines
2.5 KiB
C++
/*
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* Copyright (C) 2016 Igalia S.L.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. 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
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
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* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "config.h"
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#include <wtf/linux/CurrentProcessMemoryStatus.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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namespace WTF {
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static inline size_t systemPageSize()
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{
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static size_t pageSize = 0;
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if (!pageSize)
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pageSize = sysconf(_SC_PAGE_SIZE);
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return pageSize;
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}
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void currentProcessMemoryStatus(ProcessMemoryStatus& memoryStatus)
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{
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FILE* file = fopen("/proc/self/statm", "r");
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if (!file)
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return;
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char buffer[128];
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char* line = fgets(buffer, 128, file);
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fclose(file);
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if (!line)
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return;
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size_t pageSize = systemPageSize();
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char* end = nullptr;
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unsigned long long intValue = strtoull(line, &end, 10);
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memoryStatus.size = intValue * pageSize;
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intValue = strtoull(end, &end, 10);
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memoryStatus.resident = intValue * pageSize;
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intValue = strtoull(end, &end, 10);
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memoryStatus.shared = intValue * pageSize;
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intValue = strtoull(end, &end, 10);
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memoryStatus.text = intValue * pageSize;
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intValue = strtoull(end, &end, 10);
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memoryStatus.lib = intValue * pageSize;
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intValue = strtoull(end, &end, 10);
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memoryStatus.data = intValue * pageSize;
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intValue = strtoull(end, &end, 10);
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memoryStatus.dt = intValue * pageSize;
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}
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} // namespace WTF
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