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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 !defined(OS_FUCHSIA)
#include <sys/resource.h>
#endif
#if defined(OS_APPLE)
#include <malloc/malloc.h>
#else
#include <malloc.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 !defined(OS_FUCHSIA)
#if defined(OS_LINUX) || defined(OS_CHROMEOS)
static const rlim_t kSystemDefaultMaxFds = 8192;
#elif defined(OS_APPLE)
static const rlim_t kSystemDefaultMaxFds = 256;
#elif defined(OS_SOLARIS)
static const rlim_t kSystemDefaultMaxFds = 8192;
#elif defined(OS_FREEBSD)
static const rlim_t kSystemDefaultMaxFds = 8192;
#elif defined(OS_NETBSD)
static const rlim_t kSystemDefaultMaxFds = 1024;
#elif defined(OS_OPENBSD)
static const rlim_t kSystemDefaultMaxFds = 256;
#elif defined(OS_ANDROID)
static const rlim_t kSystemDefaultMaxFds = 1024;
#elif defined(OS_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 defined(OS_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) {
unsigned int 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 // !defined(OS_FUCHSIA)
size_t GetPageSize() {
static const size_t pagesize = []() -> size_t {
// For more information see getpagesize(2). Portable applications should use
// sysconf(_SC_PAGESIZE) rather than getpagesize() if it's available.
#if defined(_SC_PAGESIZE)
return sysconf(_SC_PAGESIZE);
#else
return getpagesize();
#endif
}();
return pagesize;
}
size_t ProcessMetrics::GetMallocUsage() {
#if defined(OS_APPLE)
malloc_statistics_t stats = {0};
malloc_zone_statistics(nullptr, &stats);
return stats.size_in_use;
#elif defined(OS_LINUX) || defined(OS_CHROMEOS) || defined(OS_ANDROID)
struct mallinfo minfo = mallinfo();
#if BUILDFLAG(USE_TCMALLOC)
return minfo.uordblks;
#else
return minfo.hblkhd + minfo.arena;
#endif
#elif defined(OS_FUCHSIA)
// TODO(fuchsia): Not currently exposed. https://crbug.com/735087.
return 0;
#endif
}
} // namespace base
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