mirror of
https://github.com/llvm/llvm-project.git
synced 2025-04-16 13:06:48 +00:00
64 lines
2.0 KiB
C++
64 lines
2.0 KiB
C++
//===--- rtsan_context.cpp - Realtime Sanitizer -----------------*- 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
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#include "rtsan/rtsan_context.h"
|
|
#include "rtsan/rtsan.h"
|
|
|
|
#include "sanitizer_common/sanitizer_allocator_internal.h"
|
|
|
|
#include <new>
|
|
#include <pthread.h>
|
|
|
|
using namespace __sanitizer;
|
|
using namespace __rtsan;
|
|
|
|
static pthread_key_t context_key;
|
|
static pthread_once_t key_once = PTHREAD_ONCE_INIT;
|
|
|
|
// InternalFree cannot be passed directly to pthread_key_create
|
|
// because it expects a signature with only one arg
|
|
static void InternalFreeWrapper(void *ptr) { __sanitizer::InternalFree(ptr); }
|
|
|
|
static __rtsan::Context &GetContextForThisThreadImpl() {
|
|
auto MakeThreadLocalContextKey = []() {
|
|
CHECK_EQ(pthread_key_create(&context_key, InternalFreeWrapper), 0);
|
|
};
|
|
|
|
pthread_once(&key_once, MakeThreadLocalContextKey);
|
|
Context *current_thread_context =
|
|
static_cast<Context *>(pthread_getspecific(context_key));
|
|
if (current_thread_context == nullptr) {
|
|
current_thread_context =
|
|
static_cast<Context *>(InternalAlloc(sizeof(Context)));
|
|
new (current_thread_context) Context();
|
|
pthread_setspecific(context_key, current_thread_context);
|
|
}
|
|
|
|
return *current_thread_context;
|
|
}
|
|
|
|
__rtsan::Context::Context() = default;
|
|
|
|
void __rtsan::Context::RealtimePush() { realtime_depth_++; }
|
|
|
|
void __rtsan::Context::RealtimePop() { realtime_depth_--; }
|
|
|
|
void __rtsan::Context::BypassPush() { bypass_depth_++; }
|
|
|
|
void __rtsan::Context::BypassPop() { bypass_depth_--; }
|
|
|
|
bool __rtsan::Context::InRealtimeContext() const { return realtime_depth_ > 0; }
|
|
|
|
bool __rtsan::Context::IsBypassed() const { return bypass_depth_ > 0; }
|
|
|
|
Context &__rtsan::GetContextForThisThread() {
|
|
return GetContextForThisThreadImpl();
|
|
}
|