1//===-- tsan_rtl_proc.cpp -----------------------------------------------===//
2//
3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4// See https://llvm.org/LICENSE.txt for license information.
5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6//
7//===----------------------------------------------------------------------===//
8//
9// This file is a part of ThreadSanitizer (TSan), a race detector.
10//
11//===----------------------------------------------------------------------===//
12
13#include "sanitizer_common/sanitizer_placement_new.h"
14#include "tsan_rtl.h"
15#include "tsan_mman.h"
16#include "tsan_flags.h"
17
18namespace __tsan {
19
20Processor *ProcCreate() {
21  void *mem = InternalAlloc(sizeof(Processor));
22  internal_memset(mem, 0, sizeof(Processor));
23  Processor *proc = new(mem) Processor;
24  proc->thr = nullptr;
25#if !SANITIZER_GO
26  AllocatorProcStart(proc);
27#endif
28  if (common_flags()->detect_deadlocks)
29    proc->dd_pt = ctx->dd->CreatePhysicalThread();
30  return proc;
31}
32
33void ProcDestroy(Processor *proc) {
34  CHECK_EQ(proc->thr, nullptr);
35#if !SANITIZER_GO
36  AllocatorProcFinish(proc);
37#endif
38  ctx->metamap.OnProcIdle(proc);
39  if (common_flags()->detect_deadlocks)
40     ctx->dd->DestroyPhysicalThread(proc->dd_pt);
41  proc->~Processor();
42  InternalFree(proc);
43}
44
45void ProcWire(Processor *proc, ThreadState *thr) {
46  CHECK_EQ(thr->proc1, nullptr);
47  CHECK_EQ(proc->thr, nullptr);
48  thr->proc1 = proc;
49  proc->thr = thr;
50}
51
52void ProcUnwire(Processor *proc, ThreadState *thr) {
53  CHECK_EQ(thr->proc1, proc);
54  CHECK_EQ(proc->thr, thr);
55  thr->proc1 = nullptr;
56  proc->thr = nullptr;
57}
58
59}  // namespace __tsan
60