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author | orivej <orivej@yandex-team.ru> | 2022-02-10 16:44:49 +0300 |
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committer | Daniil Cherednik <dcherednik@yandex-team.ru> | 2022-02-10 16:44:49 +0300 |
commit | 718c552901d703c502ccbefdfc3c9028d608b947 (patch) | |
tree | 46534a98bbefcd7b1f3faa5b52c138ab27db75b7 /contrib/libs/llvm12/lib/Support/ManagedStatic.cpp | |
parent | e9656aae26e0358d5378e5b63dcac5c8dbe0e4d0 (diff) | |
download | ydb-718c552901d703c502ccbefdfc3c9028d608b947.tar.gz |
Restoring authorship annotation for <orivej@yandex-team.ru>. Commit 1 of 2.
Diffstat (limited to 'contrib/libs/llvm12/lib/Support/ManagedStatic.cpp')
-rw-r--r-- | contrib/libs/llvm12/lib/Support/ManagedStatic.cpp | 166 |
1 files changed, 83 insertions, 83 deletions
diff --git a/contrib/libs/llvm12/lib/Support/ManagedStatic.cpp b/contrib/libs/llvm12/lib/Support/ManagedStatic.cpp index 053493f72f..01d5598a48 100644 --- a/contrib/libs/llvm12/lib/Support/ManagedStatic.cpp +++ b/contrib/libs/llvm12/lib/Support/ManagedStatic.cpp @@ -1,83 +1,83 @@ -//===-- ManagedStatic.cpp - Static Global wrapper -------------------------===// -// -// 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 implements the ManagedStatic class and llvm_shutdown(). -// -//===----------------------------------------------------------------------===// - -#include "llvm/Support/ManagedStatic.h" -#include "llvm/Config/config.h" -#include "llvm/Support/Threading.h" -#include <cassert> -#include <mutex> -using namespace llvm; - -static const ManagedStaticBase *StaticList = nullptr; -static std::recursive_mutex *ManagedStaticMutex = nullptr; -static llvm::once_flag mutex_init_flag; - -static void initializeMutex() { - ManagedStaticMutex = new std::recursive_mutex(); -} - -static std::recursive_mutex *getManagedStaticMutex() { - llvm::call_once(mutex_init_flag, initializeMutex); - return ManagedStaticMutex; -} - -void ManagedStaticBase::RegisterManagedStatic(void *(*Creator)(), - void (*Deleter)(void*)) const { - assert(Creator); - if (llvm_is_multithreaded()) { - std::lock_guard<std::recursive_mutex> Lock(*getManagedStaticMutex()); - - if (!Ptr.load(std::memory_order_relaxed)) { - void *Tmp = Creator(); - - Ptr.store(Tmp, std::memory_order_release); - DeleterFn = Deleter; - - // Add to list of managed statics. - Next = StaticList; - StaticList = this; - } - } else { - assert(!Ptr && !DeleterFn && !Next && - "Partially initialized ManagedStatic!?"); - Ptr = Creator(); - DeleterFn = Deleter; - - // Add to list of managed statics. - Next = StaticList; - StaticList = this; - } -} - -void ManagedStaticBase::destroy() const { - assert(DeleterFn && "ManagedStatic not initialized correctly!"); - assert(StaticList == this && - "Not destroyed in reverse order of construction?"); - // Unlink from list. - StaticList = Next; - Next = nullptr; - - // Destroy memory. - DeleterFn(Ptr); - - // Cleanup. - Ptr = nullptr; - DeleterFn = nullptr; -} - -/// llvm_shutdown - Deallocate and destroy all ManagedStatic variables. -void llvm::llvm_shutdown() { - std::lock_guard<std::recursive_mutex> Lock(*getManagedStaticMutex()); - - while (StaticList) - StaticList->destroy(); -} +//===-- ManagedStatic.cpp - Static Global wrapper -------------------------===// +// +// 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 implements the ManagedStatic class and llvm_shutdown(). +// +//===----------------------------------------------------------------------===// + +#include "llvm/Support/ManagedStatic.h" +#include "llvm/Config/config.h" +#include "llvm/Support/Threading.h" +#include <cassert> +#include <mutex> +using namespace llvm; + +static const ManagedStaticBase *StaticList = nullptr; +static std::recursive_mutex *ManagedStaticMutex = nullptr; +static llvm::once_flag mutex_init_flag; + +static void initializeMutex() { + ManagedStaticMutex = new std::recursive_mutex(); +} + +static std::recursive_mutex *getManagedStaticMutex() { + llvm::call_once(mutex_init_flag, initializeMutex); + return ManagedStaticMutex; +} + +void ManagedStaticBase::RegisterManagedStatic(void *(*Creator)(), + void (*Deleter)(void*)) const { + assert(Creator); + if (llvm_is_multithreaded()) { + std::lock_guard<std::recursive_mutex> Lock(*getManagedStaticMutex()); + + if (!Ptr.load(std::memory_order_relaxed)) { + void *Tmp = Creator(); + + Ptr.store(Tmp, std::memory_order_release); + DeleterFn = Deleter; + + // Add to list of managed statics. + Next = StaticList; + StaticList = this; + } + } else { + assert(!Ptr && !DeleterFn && !Next && + "Partially initialized ManagedStatic!?"); + Ptr = Creator(); + DeleterFn = Deleter; + + // Add to list of managed statics. + Next = StaticList; + StaticList = this; + } +} + +void ManagedStaticBase::destroy() const { + assert(DeleterFn && "ManagedStatic not initialized correctly!"); + assert(StaticList == this && + "Not destroyed in reverse order of construction?"); + // Unlink from list. + StaticList = Next; + Next = nullptr; + + // Destroy memory. + DeleterFn(Ptr); + + // Cleanup. + Ptr = nullptr; + DeleterFn = nullptr; +} + +/// llvm_shutdown - Deallocate and destroy all ManagedStatic variables. +void llvm::llvm_shutdown() { + std::lock_guard<std::recursive_mutex> Lock(*getManagedStaticMutex()); + + while (StaticList) + StaticList->destroy(); +} |