diff options
| author | vitalyisaev <[email protected]> | 2023-06-29 10:00:50 +0300 |
|---|---|---|
| committer | vitalyisaev <[email protected]> | 2023-06-29 10:00:50 +0300 |
| commit | 6ffe9e53658409f212834330e13564e4952558f6 (patch) | |
| tree | 85b1e00183517648b228aafa7c8fb07f5276f419 /contrib/libs/llvm16/lib/Support/Threading.cpp | |
| parent | 726057070f9c5a91fc10fde0d5024913d10f1ab9 (diff) | |
YQ Connector: support managed ClickHouse
Со стороны dqrun можно обратиться к инстансу коннектора, который работает на streaming стенде, и извлечь данные из облачного CH.
Diffstat (limited to 'contrib/libs/llvm16/lib/Support/Threading.cpp')
| -rw-r--r-- | contrib/libs/llvm16/lib/Support/Threading.cpp | 111 |
1 files changed, 111 insertions, 0 deletions
diff --git a/contrib/libs/llvm16/lib/Support/Threading.cpp b/contrib/libs/llvm16/lib/Support/Threading.cpp new file mode 100644 index 00000000000..923935bbca1 --- /dev/null +++ b/contrib/libs/llvm16/lib/Support/Threading.cpp @@ -0,0 +1,111 @@ +//===-- llvm/Support/Threading.cpp- Control multithreading mode --*- C++ -*-==// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// +// +// This file defines helper functions for running LLVM in a multi-threaded +// environment. +// +//===----------------------------------------------------------------------===// + +#include "llvm/Support/Threading.h" +#include "llvm/Config/config.h" +#include "llvm/Config/llvm-config.h" + +#include <cassert> +#include <errno.h> +#include <optional> +#include <stdlib.h> +#include <string.h> + +using namespace llvm; + +//===----------------------------------------------------------------------===// +//=== WARNING: Implementation here must contain only TRULY operating system +//=== independent code. +//===----------------------------------------------------------------------===// + +#if LLVM_ENABLE_THREADS == 0 || \ + (!defined(_WIN32) && !defined(HAVE_PTHREAD_H)) +uint64_t llvm::get_threadid() { return 0; } + +uint32_t llvm::get_max_thread_name_length() { return 0; } + +void llvm::set_thread_name(const Twine &Name) {} + +void llvm::get_thread_name(SmallVectorImpl<char> &Name) { Name.clear(); } + +llvm::BitVector llvm::get_thread_affinity_mask() { return {}; } + +unsigned llvm::ThreadPoolStrategy::compute_thread_count() const { + // When threads are disabled, ensure clients will loop at least once. + return 1; +} + +// Unknown if threading turned off +int llvm::get_physical_cores() { return -1; } + +#else + +static int computeHostNumHardwareThreads(); + +unsigned llvm::ThreadPoolStrategy::compute_thread_count() const { + int MaxThreadCount = + UseHyperThreads ? computeHostNumHardwareThreads() : get_physical_cores(); + if (MaxThreadCount <= 0) + MaxThreadCount = 1; + if (ThreadsRequested == 0) + return MaxThreadCount; + if (!Limit) + return ThreadsRequested; + return std::min((unsigned)MaxThreadCount, ThreadsRequested); +} + +// Include the platform-specific parts of this class. +#ifdef LLVM_ON_UNIX +#include "Unix/Threading.inc" +#endif +#ifdef _WIN32 +#include "Windows/Threading.inc" +#endif + +// Must be included after Threading.inc to provide definition for llvm::thread +// because FreeBSD's condvar.h (included by user.h) misuses the "thread" +// keyword. +#include "llvm/Support/thread.h" + +#if defined(__APPLE__) + // Darwin's default stack size for threads except the main one is only 512KB, + // which is not enough for some/many normal LLVM compilations. This implements + // the same interface as std::thread but requests the same stack size as the + // main thread (8MB) before creation. +const std::optional<unsigned> llvm::thread::DefaultStackSize = 8 * 1024 * 1024; +#else +const std::optional<unsigned> llvm::thread::DefaultStackSize; +#endif + + +#endif + +std::optional<ThreadPoolStrategy> +llvm::get_threadpool_strategy(StringRef Num, ThreadPoolStrategy Default) { + if (Num == "all") + return llvm::hardware_concurrency(); + if (Num.empty()) + return Default; + unsigned V; + if (Num.getAsInteger(10, V)) + return std::nullopt; // malformed 'Num' value + if (V == 0) + return Default; + + // Do not take the Default into account. This effectively disables + // heavyweight_hardware_concurrency() if the user asks for any number of + // threads on the cmd-line. + ThreadPoolStrategy S = llvm::hardware_concurrency(); + S.ThreadsRequested = V; + return S; +} |
