webkitgtk-2.16.5HEADwebkitgtk-2.16.5master

1 files changed, 77 insertions, 0 deletions

diff --git a/Source/WebCore/platform/linux/CurrentProcessMemoryStatus.cpp b/Source/WebCore/platform/linux/CurrentProcessMemoryStatus.cpp
new file mode 100644
index 000000000..36139ab6a
--- /dev/null
+++ b/Source/WebCore/platform/linux/CurrentProcessMemoryStatus.cpp
@@ -0,0 +1,77 @@
+/*
+ * 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)