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// Copyright 2015 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "components/metrics/system_memory_stats_recorder.h"
#include "base/metrics/histogram_macros.h"
#include "base/process/process_metrics.h"
#include "build/build_config.h"
namespace metrics {
// Record a size in megabytes, a potential interval from 250MB up to 32 GB.
#define UMA_HISTOGRAM_ALLOCATED_MEGABYTES(name, sample) \
UMA_HISTOGRAM_CUSTOM_COUNTS(name, sample, 250, 32768, 50)
// Records a statistics |sample| for UMA histogram |name|
// using a linear distribution of buckets.
#define UMA_HISTOGRAM_LINEAR(name, sample, max, buckets) \
STATIC_HISTOGRAM_POINTER_BLOCK( \
name, Add(sample), \
base::LinearHistogram::FactoryGet( \
name, \
1, /* Minimum. The 0 bin for underflow is automatically added. */ \
max + 1, /* Ensure bucket size of |maximum| / |bucket_count|. */ \
buckets + 2, /* Account for the underflow and overflow bins. */ \
base::Histogram::kUmaTargetedHistogramFlag))
#define UMA_HISTOGRAM_MEGABYTES_LINEAR(name, sample) \
UMA_HISTOGRAM_LINEAR(name, sample, 2500, 50)
void RecordMemoryStats(RecordMemoryStatsType type) {
base::SystemMemoryInfoKB memory;
if (!base::GetSystemMemoryInfo(&memory))
return;
#if defined(OS_CHROMEOS)
// Record graphics GEM object size in a histogram with 50 MB buckets.
int mem_graphics_gem_mb = 0;
if (memory.gem_size != -1)
mem_graphics_gem_mb = memory.gem_size / 1024 / 1024;
// Record shared memory (used by renderer/GPU buffers).
int mem_shmem_mb = memory.shmem / 1024;
#endif
// On Intel, graphics objects are in anonymous pages, but on ARM they are
// not. For a total "allocated count" add in graphics pages on ARM.
int mem_allocated_mb = (memory.active_anon + memory.inactive_anon) / 1024;
#if defined(OS_CHROMEOS) && defined(ARCH_CPU_ARM_FAMILY)
mem_allocated_mb += mem_graphics_gem_mb;
#endif
int mem_available_mb =
(memory.active_file + memory.inactive_file + memory.free) / 1024;
switch (type) {
case RECORD_MEMORY_STATS_TAB_DISCARDED: {
#if defined(OS_CHROMEOS)
UMA_HISTOGRAM_MEGABYTES_LINEAR("Tabs.Discard.MemGraphicsMB",
mem_graphics_gem_mb);
UMA_HISTOGRAM_MEGABYTES_LINEAR("Tabs.Discard.MemShmemMB", mem_shmem_mb);
#endif
UMA_HISTOGRAM_ALLOCATED_MEGABYTES("Tabs.Discard.MemAllocatedMB",
mem_allocated_mb);
UMA_HISTOGRAM_LARGE_MEMORY_MB("Tabs.Discard.MemAvailableMB",
mem_available_mb);
break;
}
case RECORD_MEMORY_STATS_CONTENTS_OOM_KILLED: {
#if defined(OS_CHROMEOS)
UMA_HISTOGRAM_MEGABYTES_LINEAR("Memory.OOMKill.Contents.MemGraphicsMB",
mem_graphics_gem_mb);
UMA_HISTOGRAM_MEGABYTES_LINEAR("Memory.OOMKill.Contents.MemShmemMB",
mem_shmem_mb);
#endif
UMA_HISTOGRAM_ALLOCATED_MEGABYTES(
"Memory.OOMKill.Contents.MemAllocatedMB", mem_allocated_mb);
UMA_HISTOGRAM_LARGE_MEMORY_MB("Memory.OOMKill.Contents.MemAvailableMB",
mem_available_mb);
break;
}
case RECORD_MEMORY_STATS_EXTENSIONS_OOM_KILLED: {
#if defined(OS_CHROMEOS)
UMA_HISTOGRAM_MEGABYTES_LINEAR("Memory.OOMKill.Extensions.MemGraphicsMB",
mem_graphics_gem_mb);
UMA_HISTOGRAM_MEGABYTES_LINEAR("Memory.OOMKill.Extensions.MemShmemMB",
mem_shmem_mb);
#endif
UMA_HISTOGRAM_ALLOCATED_MEGABYTES(
"Memory.OOMKill.Extensions.MemAllocatedMB", mem_allocated_mb);
UMA_HISTOGRAM_LARGE_MEMORY_MB("Memory.OOMKill.Extensions.MemAvailableMB",
mem_available_mb);
break;
}
}
}
} // namespace metrics
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