56 lines
1.4 KiB
C++
56 lines
1.4 KiB
C++
// Copyright (c) 2013 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#include "base/process/process_metrics.h"
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#include <sys/resource.h>
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#include <sys/time.h>
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#include "base/logging.h"
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namespace base {
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int64 TimeValToMicroseconds(const struct timeval& tv) {
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static const int kMicrosecondsPerSecond = 1000000;
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int64 ret = tv.tv_sec; // Avoid (int * int) integer overflow.
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ret *= kMicrosecondsPerSecond;
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ret += tv.tv_usec;
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return ret;
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}
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ProcessMetrics::~ProcessMetrics() { }
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#if defined(OS_LINUX)
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static const rlim_t kSystemDefaultMaxFds = 8192;
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#elif defined(OS_MACOSX)
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static const rlim_t kSystemDefaultMaxFds = 256;
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#elif defined(OS_SOLARIS)
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static const rlim_t kSystemDefaultMaxFds = 8192;
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#elif defined(OS_FREEBSD)
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static const rlim_t kSystemDefaultMaxFds = 8192;
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#elif defined(OS_OPENBSD)
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static const rlim_t kSystemDefaultMaxFds = 256;
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#elif defined(OS_ANDROID)
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static const rlim_t kSystemDefaultMaxFds = 1024;
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#endif
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size_t GetMaxFds() {
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rlim_t max_fds;
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struct rlimit nofile;
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if (getrlimit(RLIMIT_NOFILE, &nofile)) {
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// getrlimit failed. Take a best guess.
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max_fds = kSystemDefaultMaxFds;
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RAW_LOG(ERROR, "getrlimit(RLIMIT_NOFILE) failed");
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} else {
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max_fds = nofile.rlim_cur;
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}
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if (max_fds > INT_MAX)
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max_fds = INT_MAX;
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return static_cast<size_t>(max_fds);
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}
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} // namespace base
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