cf6ab6bb2b
- b527a3e4b36b644ac424e3c525b1cd393f6f6c40 Fix some typos in the usage examples by Jorg Brown <jorg@google.com>
- 82be4a9adf3bb0ddafc0d46274969c99afffe870 Fix typo in optional.h comment. by Abseil Team <absl-team@google.com>
- d6ee63bf8fc51fba074c23b33cebc28c808d7f07 Remove internal-only identifiers from code. by Daniel Katz <katzdm@google.com>
- f9c3ad2f0d73f53b21603638af8b4bed636e79f4 Use easier understandable names for absl::StartsWith and ... by Abseil Team <absl-team@google.com>
- 7c16c14fefee89c927b8789d6043c4691bcffc9b Add -Wno-missing-prototypes back to the LLVM copts. by Derek Mauro <dmauro@google.com>
- 2f4b7d2e50c7023240242f1e15db60ccd7e8768d IWYU | absl/strings by Juemin Yang <jueminyang@google.com>
- a99cbcc1daa34a2d6a2bb26de275e05173cc77e9 IWYU | absl/type by Juemin Yang <jueminyang@google.com>
- 12e1146d0fc76c071d7e0ebaabb62f0a984fae66 Use LLVM_FLAGS and LLVM_TEST_FLAGS when --compiler=llvm. by Derek Mauro <dmauro@google.com>
- cd6bea616abda558d0bace5bd77455662a233688 IWYU | absl/debugging by Juemin Yang <jueminyang@google.com>
- d9a7382e59d46a8581b6b7a31cd5a48bb89326e9 IWYU | absl/synchronization by Juemin Yang <jueminyang@google.com>
- 07ec7d6d5a4a666f4183c5d0ed9c342baa7b24bc IWYU | absl/numeric by Juemin Yang <jueminyang@google.com>
- 12bfe40051f4270f8707e191af5652f83f2f750c Remove the RoundTrip{Float,Double}ToBuffer routines from ... by Jorg Brown <jorg@google.com>
- eeb4fd67c9d97f66cb9475c3c5e51ab132f1c810 Adds conversion functions for converting between absl/tim... by Greg Miller <jgm@google.com>
- 59a2108d05d4ea85dc5cc11e49b2cd2335d4295a Change Substitute to use %.6g formatting rather than 15/1... by Jorg Brown <jorg@google.com>
- 394becb48e0fcd161642cdaac5120d32567e0ef8 IWYU | absl/meta by Juemin Yang <jueminyang@google.com>
- 1e5da6e8da336699b2469dcf6dda025b9b0ec4c9 Rewrite atomic_hook.h to not use std::atomic<T*> under Wi... by Greg Falcon <gfalcon@google.com>
GitOrigin-RevId: b527a3e4b36b644ac424e3c525b1cd393f6f6c40
Change-Id: I14e331d91c956ef045ac7927091a9f179716de0c
63 lines
2.2 KiB
C++
63 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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// http://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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#else
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#include <intsafe.h>
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#endif
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#include "absl/base/port.h"
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namespace absl {
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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
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// the return types of GetProcessId() and GetThreadId() are both DWORD.
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using pid_t = DWORD;
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#endif
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pid_t GetTID();
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} // namespace base_internal
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} // namespace absl
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#endif // ABSL_BASE_INTERNAL_SYSINFO_H_
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