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// Copyright 2017 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "base/process/process_metrics.h"
#include <lib/fdio/limits.h>
#include <lib/zx/process.h>
#include "base/fuchsia/fuchsia_logging.h"
#include "base/memory/ptr_util.h"
#include "base/trace_event/trace_event.h"
namespace base {
size_t GetMaxFds() {
return FDIO_MAX_FD;
}
size_t GetHandleLimit() {
// Duplicated from the internal Magenta kernel constant kMaxHandleCount
// (zircon/kernel/object/handle.cc).
return 256 * 1024u;
}
size_t GetSystemCommitCharge() {
// TODO(crbug.com/42050627): Fuchsia does not support this.
return 0;
}
ProcessMetrics::ProcessMetrics(ProcessHandle process) : process_(process) {}
// static
std::unique_ptr<ProcessMetrics> ProcessMetrics::CreateProcessMetrics(
ProcessHandle process) {
return base::WrapUnique(new ProcessMetrics(process));
}
base::expected<TimeDelta, ProcessCPUUsageError>
ProcessMetrics::GetCumulativeCPUUsage() {
TRACE_EVENT("base", "GetCumulativeCPUUsage");
zx_info_task_runtime_t stats;
zx_status_t status = zx::unowned_process(process_)->get_info(
ZX_INFO_TASK_RUNTIME, &stats, sizeof(stats), nullptr, nullptr);
if (status != ZX_OK) {
return base::unexpected(ProcessCPUUsageError::kSystemError);
}
return base::ok(TimeDelta::FromZxDuration(stats.cpu_time));
}
base::expected<ProcessMemoryInfo, ProcessUsageError>
ProcessMetrics::GetMemoryInfo() const {
zx_info_task_stats_t info;
zx_status_t status = zx::unowned_process(process_)->get_info(
ZX_INFO_TASK_STATS, &info, sizeof(info), nullptr, nullptr);
if (status != ZX_OK) {
return base::unexpected(ProcessUsageError::kSystemError);
}
ProcessMemoryInfo memory_info;
memory_info.resident_set_bytes =
info.mem_private_bytes + info.mem_shared_bytes;
memory_info.rss_anon_bytes = info.mem_private_bytes;
// Fuchsia has no swap.
memory_info.vm_swap_bytes = 0;
return memory_info;
}
bool GetSystemMemoryInfo(SystemMemoryInfoKB* meminfo) {
// TODO(crbug.com/42050627).
return false;
}
} // namespace base
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