// 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 #include #include #include #include #include "base/allocator/buildflags.h" #include "base/logging.h" #include "build/build_config.h" #if !BUILDFLAG(IS_FUCHSIA) #include #endif #if BUILDFLAG(IS_APPLE) #include #else #include #endif #if BUILDFLAG(IS_LINUX) || BUILDFLAG(IS_CHROMEOS) || BUILDFLAG(IS_ANDROID) #include #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(max_fds); } size_t GetHandleLimit() { #if BUILDFLAG(IS_APPLE) // Taken from a small test that allocated ports in a loop. return static_cast(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(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