forked from OSchip/llvm-project
91 lines
2.7 KiB
C++
91 lines
2.7 KiB
C++
//=-- lsan_thread.cpp -----------------------------------------------------===//
|
|
//
|
|
// 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 is a part of LeakSanitizer.
|
|
// See lsan_thread.h for details.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#include "lsan_thread.h"
|
|
|
|
#include "lsan.h"
|
|
#include "lsan_allocator.h"
|
|
#include "lsan_common.h"
|
|
#include "sanitizer_common/sanitizer_common.h"
|
|
#include "sanitizer_common/sanitizer_placement_new.h"
|
|
#include "sanitizer_common/sanitizer_thread_registry.h"
|
|
#include "sanitizer_common/sanitizer_tls_get_addr.h"
|
|
|
|
namespace __lsan {
|
|
|
|
static ThreadRegistry *thread_registry;
|
|
|
|
static ThreadContextBase *CreateThreadContext(u32 tid) {
|
|
void *mem = MmapOrDie(sizeof(ThreadContext), "ThreadContext");
|
|
return new (mem) ThreadContext(tid);
|
|
}
|
|
|
|
void InitializeThreadRegistry() {
|
|
static ALIGNED(64) char thread_registry_placeholder[sizeof(ThreadRegistry)];
|
|
thread_registry =
|
|
new (thread_registry_placeholder) ThreadRegistry(CreateThreadContext);
|
|
}
|
|
|
|
ThreadContextLsanBase::ThreadContextLsanBase(int tid)
|
|
: ThreadContextBase(tid) {}
|
|
|
|
void ThreadContextLsanBase::OnFinished() {
|
|
AllocatorThreadFinish();
|
|
DTLS_Destroy();
|
|
}
|
|
|
|
u32 ThreadCreate(u32 parent_tid, bool detached, void *arg) {
|
|
return thread_registry->CreateThread(0, detached, parent_tid, arg);
|
|
}
|
|
|
|
void ThreadContextLsanBase::ThreadStart(u32 tid, tid_t os_id,
|
|
ThreadType thread_type, void *arg) {
|
|
thread_registry->StartThread(tid, os_id, thread_type, arg);
|
|
SetCurrentThread(tid);
|
|
}
|
|
|
|
void ThreadFinish() {
|
|
thread_registry->FinishThread(GetCurrentThread());
|
|
SetCurrentThread(kInvalidTid);
|
|
}
|
|
|
|
ThreadContext *CurrentThreadContext() {
|
|
if (!thread_registry)
|
|
return nullptr;
|
|
if (GetCurrentThread() == kInvalidTid)
|
|
return nullptr;
|
|
// No lock needed when getting current thread.
|
|
return (ThreadContext *)thread_registry->GetThreadLocked(GetCurrentThread());
|
|
}
|
|
|
|
void EnsureMainThreadIDIsCorrect() {
|
|
if (GetCurrentThread() == kMainTid)
|
|
CurrentThreadContext()->os_id = GetTid();
|
|
}
|
|
|
|
///// Interface to the common LSan module. /////
|
|
|
|
void ForEachExtraStackRange(tid_t os_id, RangeIteratorCallback callback,
|
|
void *arg) {}
|
|
|
|
void LockThreadRegistry() { thread_registry->Lock(); }
|
|
|
|
void UnlockThreadRegistry() { thread_registry->Unlock(); }
|
|
|
|
ThreadRegistry *GetThreadRegistryLocked() {
|
|
thread_registry->CheckLocked();
|
|
return thread_registry;
|
|
}
|
|
|
|
} // namespace __lsan
|