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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 <stddef.h>
- #include <stdint.h>
- #include <sys/time.h>
- #include <unistd.h>
- #include "base/allocator/buildflags.h"
- #include "base/logging.h"
- #include "build/build_config.h"
- #if !BUILDFLAG(IS_FUCHSIA)
- #include <sys/resource.h>
- #endif
- #if BUILDFLAG(IS_APPLE)
- #include <malloc/malloc.h>
- #else
- #include <malloc.h>
- #endif
- #if BUILDFLAG(IS_LINUX) || BUILDFLAG(IS_CHROMEOS) || BUILDFLAG(IS_ANDROID)
- #include <features.h>
- #include "base/numerics/safe_conversions.h"
- #endif
- namespace base {
- int64_t TimeValToMicroseconds(const struct timeval& tv) {
- int64_t ret = tv.tv_sec; // Avoid (int * int) integer overflow.
- ret *= Time::kMicrosecondsPerSecond;
- ret += tv.tv_usec;
- return ret;
- }
- ProcessMetrics::~ProcessMetrics() = default;
- #if !BUILDFLAG(IS_FUCHSIA)
- #if BUILDFLAG(IS_LINUX) || BUILDFLAG(IS_CHROMEOS)
- static const rlim_t kSystemDefaultMaxFds = 8192;
- #elif BUILDFLAG(IS_APPLE)
- static const rlim_t kSystemDefaultMaxFds = 256;
- #elif BUILDFLAG(IS_SOLARIS)
- static const rlim_t kSystemDefaultMaxFds = 8192;
- #elif BUILDFLAG(IS_FREEBSD)
- static const rlim_t kSystemDefaultMaxFds = 8192;
- #elif BUILDFLAG(IS_NETBSD)
- static const rlim_t kSystemDefaultMaxFds = 1024;
- #elif BUILDFLAG(IS_OPENBSD)
- static const rlim_t kSystemDefaultMaxFds = 256;
- #elif BUILDFLAG(IS_ANDROID)
- static const rlim_t kSystemDefaultMaxFds = 1024;
- #elif BUILDFLAG(IS_AIX)
- static const rlim_t kSystemDefaultMaxFds = 8192;
- #endif
- size_t GetMaxFds() {
- rlim_t max_fds;
- struct rlimit nofile;
- if (getrlimit(RLIMIT_NOFILE, &nofile)) {
- // getrlimit failed. Take a best guess.
- max_fds = kSystemDefaultMaxFds;
- RAW_LOG(ERROR, "getrlimit(RLIMIT_NOFILE) failed");
- } else {
- max_fds = nofile.rlim_cur;
- }
- if (max_fds > INT_MAX)
- max_fds = INT_MAX;
- return static_cast<size_t>(max_fds);
- }
- size_t GetHandleLimit() {
- #if BUILDFLAG(IS_APPLE)
- // Taken from a small test that allocated ports in a loop.
- return static_cast<size_t>(1 << 18);
- #else
- return GetMaxFds();
- #endif
- }
- void IncreaseFdLimitTo(unsigned int max_descriptors) {
- struct rlimit limits;
- if (getrlimit(RLIMIT_NOFILE, &limits) == 0) {
- rlim_t new_limit = max_descriptors;
- if (max_descriptors <= limits.rlim_cur)
- return;
- if (limits.rlim_max > 0 && limits.rlim_max < max_descriptors) {
- new_limit = limits.rlim_max;
- }
- limits.rlim_cur = new_limit;
- if (setrlimit(RLIMIT_NOFILE, &limits) != 0) {
- PLOG(INFO) << "Failed to set file descriptor limit";
- }
- } else {
- PLOG(INFO) << "Failed to get file descriptor limit";
- }
- }
- #endif // !BUILDFLAG(IS_FUCHSIA)
- #if BUILDFLAG(IS_LINUX) || BUILDFLAG(IS_CHROMEOS) || BUILDFLAG(IS_ANDROID)
- namespace {
- size_t GetMallocUsageMallinfo() {
- #if defined(__GLIBC__) && defined(__GLIBC_PREREQ)
- #if __GLIBC_PREREQ(2, 33)
- #define MALLINFO2_FOUND_IN_LIBC
- struct mallinfo2 minfo = mallinfo2();
- #endif
- #endif // defined(__GLIBC__) && defined(__GLIBC_PREREQ)
- #if !defined(MALLINFO2_FOUND_IN_LIBC)
- struct mallinfo minfo = mallinfo();
- #endif
- #undef MALLINFO2_FOUND_IN_LIBC
- return checked_cast<size_t>(minfo.hblkhd + minfo.arena);
- }
- } // namespace
- #endif // BUILDFLAG(IS_LINUX) || BUILDFLAG(IS_CHROMEOS) ||
- // BUILDFLAG(IS_ANDROID)
- size_t ProcessMetrics::GetMallocUsage() {
- #if BUILDFLAG(IS_APPLE)
- malloc_statistics_t stats = {0};
- malloc_zone_statistics(nullptr, &stats);
- return stats.size_in_use;
- #elif BUILDFLAG(IS_LINUX) || BUILDFLAG(IS_CHROMEOS) || BUILDFLAG(IS_ANDROID)
- return GetMallocUsageMallinfo();
- #elif BUILDFLAG(IS_FUCHSIA)
- // TODO(fuchsia): Not currently exposed. https://crbug.com/735087.
- return 0;
- #endif
- }
- } // namespace base
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