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111 lines
2.8 KiB
C++
111 lines
2.8 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 <limits.h>
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#include <stddef.h>
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#include <stdint.h>
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#include <sys/resource.h>
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#include <sys/time.h>
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#include <unistd.h>
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#include "base/logging.h"
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#include "build/build_config.h"
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#if defined(OS_MACOSX)
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#include <malloc/malloc.h>
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#else
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#include <malloc.h>
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#endif
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namespace base {
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int64_t TimeValToMicroseconds(const struct timeval& tv) {
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int64_t ret = tv.tv_sec; // Avoid (int * int) integer overflow.
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ret *= Time::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_FUCHSIA)
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static const rlim_t kSystemDefaultMaxFds = 8192;
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#elif defined(OS_NETBSD)
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static const rlim_t kSystemDefaultMaxFds = 1024;
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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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#elif defined(OS_AIX)
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static const rlim_t kSystemDefaultMaxFds = 8192;
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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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void SetFdLimit(unsigned int max_descriptors) {
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struct rlimit limits;
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if (getrlimit(RLIMIT_NOFILE, &limits) == 0) {
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unsigned int new_limit = max_descriptors;
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if (limits.rlim_max > 0 && limits.rlim_max < max_descriptors) {
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new_limit = limits.rlim_max;
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}
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limits.rlim_cur = new_limit;
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if (setrlimit(RLIMIT_NOFILE, &limits) != 0) {
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PLOG(INFO) << "Failed to set file descriptor limit";
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}
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} else {
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PLOG(INFO) << "Failed to get file descriptor limit";
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}
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}
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size_t GetPageSize() {
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return getpagesize();
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}
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size_t ProcessMetrics::GetMallocUsage() {
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#if defined(OS_MACOSX) || defined(OS_IOS)
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malloc_statistics_t stats = {0};
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malloc_zone_statistics(nullptr, &stats);
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return stats.size_in_use;
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#elif defined(OS_LINUX) || defined(OS_ANDROID)
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struct mallinfo minfo = mallinfo();
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#if defined(USE_TCMALLOC)
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return minfo.uordblks;
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#else
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return minfo.hblkhd + minfo.arena;
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#endif
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#elif defined(OS_FUCHSIA)
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// TODO(fuchsia): Not currently exposed. https://crbug.com/735087.
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return 0;
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#endif
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}
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} // namespace base
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