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/*
* Copyright (C) 2016 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.
*/
#include "config.h"
#include "CurrentProcessMemoryStatus.h"
#if OS(LINUX)
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
namespace WebCore {
static inline size_t systemPageSize()
{
static size_t pageSize = 0;
if (!pageSize)
pageSize = sysconf(_SC_PAGE_SIZE);
return pageSize;
}
void currentProcessMemoryStatus(ProcessMemoryStatus& memoryStatus)
{
FILE* file = fopen("/proc/self/statm", "r");
if (!file)
return;
char buffer[128];
char* line = fgets(buffer, 128, file);
fclose(file);
if (!line)
return;
size_t pageSize = systemPageSize();
char* end = nullptr;
unsigned long long intValue = strtoull(line, &end, 10);
memoryStatus.size = intValue * pageSize;
intValue = strtoull(end, &end, 10);
memoryStatus.resident = intValue * pageSize;
intValue = strtoull(end, &end, 10);
memoryStatus.shared = intValue * pageSize;
intValue = strtoull(end, &end, 10);
memoryStatus.text = intValue * pageSize;
intValue = strtoull(end, &end, 10);
memoryStatus.lib = intValue * pageSize;
intValue = strtoull(end, &end, 10);
memoryStatus.data = intValue * pageSize;
intValue = strtoull(end, &end, 10);
memoryStatus.dt = intValue * pageSize;
}
} // namespace WebCore
#endif // OS(LINUX)
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