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// Copyright (c) 2013 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 "base/process/process_metrics.h"
#include <mach/task.h>
namespace base {
namespace {
bool GetTaskInfo(task_basic_info_64* task_info_data) {
mach_msg_type_number_t count = TASK_BASIC_INFO_64_COUNT;
kern_return_t kr = task_info(mach_task_self(),
TASK_BASIC_INFO_64,
reinterpret_cast<task_info_t>(task_info_data),
&count);
return kr == KERN_SUCCESS;
}
} // namespace
ProcessMetrics::ProcessMetrics(ProcessHandle process) {}
ProcessMetrics::~ProcessMetrics() {}
// static
ProcessMetrics* ProcessMetrics::CreateProcessMetrics(ProcessHandle process) {
return new ProcessMetrics(process);
}
size_t ProcessMetrics::GetPagefileUsage() const {
task_basic_info_64 task_info_data;
if (!GetTaskInfo(&task_info_data))
return 0;
return task_info_data.virtual_size;
}
size_t ProcessMetrics::GetWorkingSetSize() const {
task_basic_info_64 task_info_data;
if (!GetTaskInfo(&task_info_data))
return 0;
return task_info_data.resident_size;
}
size_t GetMaxFds() {
static const rlim_t kSystemDefaultMaxFds = 256;
rlim_t max_fds;
struct rlimit nofile;
if (getrlimit(RLIMIT_NOFILE, &nofile)) {
// Error case: Take a best guess.
max_fds = kSystemDefaultMaxFds;
} else {
max_fds = nofile.rlim_cur;
}
if (max_fds > INT_MAX)
max_fds = INT_MAX;
return static_cast<size_t>(max_fds);
}
void SetFdLimit(unsigned int max_descriptors) {
// Unimplemented.
}
} // namespace base
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