Repo created

TMessagesProj/jni/voip/webrtc/base/process/process_metrics_ios.cc

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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 <limits.h>
+#include <mach/task.h>
+#include <stddef.h>
+
+#include "base/logging.h"
+#include "base/mac/scoped_mach_port.h"
+#include "base/memory/ptr_util.h"
+#include "base/numerics/safe_conversions.h"
+
+namespace base {
+
+ProcessMetrics::ProcessMetrics(ProcessHandle process) {}
+
+ProcessMetrics::~ProcessMetrics() {}
+
+// static
+std::unique_ptr<ProcessMetrics> ProcessMetrics::CreateProcessMetrics(
+    ProcessHandle process) {
+  return WrapUnique(new ProcessMetrics(process));
+}
+
+TimeDelta ProcessMetrics::GetCumulativeCPUUsage() {
+  NOTIMPLEMENTED();
+  return TimeDelta();
+}
+
+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 IncreaseFdLimitTo(unsigned int max_descriptors) {
+  // Unimplemented.
+}
+
+size_t GetPageSize() {
+  return getpagesize();
+}
+
+// Bytes committed by the system.
+size_t GetSystemCommitCharge() {
+  NOTIMPLEMENTED();
+  return 0;
+}
+
+bool GetSystemMemoryInfo(SystemMemoryInfoKB* meminfo) {
+  struct host_basic_info hostinfo;
+  mach_msg_type_number_t count = HOST_BASIC_INFO_COUNT;
+  base::mac::ScopedMachSendRight host(mach_host_self());
+  int result = host_info(host.get(), HOST_BASIC_INFO,
+                         reinterpret_cast<host_info_t>(&hostinfo), &count);
+  if (result != KERN_SUCCESS)
+    return false;
+
+  DCHECK_EQ(HOST_BASIC_INFO_COUNT, count);
+  meminfo->total = static_cast<int>(hostinfo.max_mem / 1024);
+
+  vm_statistics64_data_t vm_info;
+  count = HOST_VM_INFO64_COUNT;
+
+  if (host_statistics64(host.get(), HOST_VM_INFO64,
+                        reinterpret_cast<host_info64_t>(&vm_info),
+                        &count) != KERN_SUCCESS) {
+    return false;
+  }
+  DCHECK_EQ(HOST_VM_INFO64_COUNT, count);
+
+  // Check that PAGE_SIZE is divisible by 1024 (2^10).
+  CHECK_EQ(PAGE_SIZE, (PAGE_SIZE >> 10) << 10);
+  meminfo->free = saturated_cast<int>(
+      PAGE_SIZE / 1024 * (vm_info.free_count - vm_info.speculative_count));
+  meminfo->speculative =
+      saturated_cast<int>(PAGE_SIZE / 1024 * vm_info.speculative_count);
+  meminfo->file_backed =
+      saturated_cast<int>(PAGE_SIZE / 1024 * vm_info.external_page_count);
+  meminfo->purgeable =
+      saturated_cast<int>(PAGE_SIZE / 1024 * vm_info.purgeable_count);
+
+  return true;
+}
+
+}  // namespace base