1e39f8626a
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b842b7fd9b1289be31f0b7ee8e62e48e550747cf by Greg Falcon <gfalcon@google.com>:
Change the Cord str_format formatter to use iteration instead of CordReader.
When Cord is publicly released, CordReader is not going with it.
PiperOrigin-RevId: 284780736
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28e76c08ea7185a7ff9f4e0e02ae565fbbf7980f by Greg Falcon <gfalcon@google.com>:
Implementation detail change.
Introduce ABSL_NAMESPACE_BEGIN and _END annotation macros which indicate the beginning and end of a `namespace absl` scope. Currently these do nothing, but they will be used to inject an inline namespace for LTS builds (to avoid symbol collisions against other Abseil versions).
These macros should not be used by end users, because end users should never write `namespace absl {` in their own code.
This CL applies these annotations to all code under //absl/base/. The rest of Abseil will be annotated in this way in follow-up CLs.
PiperOrigin-RevId: 284776410
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e1711dc6d696dcca50d4e7d4b4d8f3076575b7ec by Abseil Team <absl-team@google.com>:
--help changed to report long flags.
PiperOrigin-RevId: 284757720
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78f66a68f428bbbd19d8d60e1125f43ba765fd35 by Tom Manshreck <shreck@google.com>:
Update comment on + or - in SimpleAToi()
PiperOrigin-RevId: 284231843
GitOrigin-RevId: b842b7fd9b1289be31f0b7ee8e62e48e550747cf
Change-Id: I3046b31391bd11c8bc4abab7785a863c377cd757
66 lines
2.2 KiB
C++
66 lines
2.2 KiB
C++
// Copyright 2017 The Abseil Authors.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// https://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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//
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// This file includes routines to find out characteristics
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// of the machine a program is running on. It is undoubtedly
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// system-dependent.
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// Functions listed here that accept a pid_t as an argument act on the
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// current process if the pid_t argument is 0
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// All functions here are thread-hostile due to file caching unless
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// commented otherwise.
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#ifndef ABSL_BASE_INTERNAL_SYSINFO_H_
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#define ABSL_BASE_INTERNAL_SYSINFO_H_
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#ifndef _WIN32
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#include <sys/types.h>
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#endif
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#include <cstdint>
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#include "absl/base/port.h"
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namespace absl {
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ABSL_NAMESPACE_BEGIN
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namespace base_internal {
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// Nominal core processor cycles per second of each processor. This is _not_
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// necessarily the frequency of the CycleClock counter (see cycleclock.h)
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// Thread-safe.
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double NominalCPUFrequency();
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// Number of logical processors (hyperthreads) in system. Thread-safe.
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int NumCPUs();
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// Return the thread id of the current thread, as told by the system.
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// No two currently-live threads implemented by the OS shall have the same ID.
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// Thread ids of exited threads may be reused. Multiple user-level threads
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// may have the same thread ID if multiplexed on the same OS thread.
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//
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// On Linux, you may send a signal to the resulting ID with kill(). However,
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// it is recommended for portability that you use pthread_kill() instead.
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#ifdef _WIN32
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// On Windows, process id and thread id are of the same type according to the
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// return types of GetProcessId() and GetThreadId() are both DWORD, an unsigned
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// 32-bit type.
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using pid_t = uint32_t;
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#endif
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pid_t GetTID();
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} // namespace base_internal
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ABSL_NAMESPACE_END
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} // namespace absl
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#endif // ABSL_BASE_INTERNAL_SYSINFO_H_
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