1//===-- tsan_rtl_proc.cc ------------------------------------------------===//
2//
3//                     The LLVM Compiler Infrastructure
4//
5// This file is distributed under the University of Illinois Open Source
6// License. See LICENSE.TXT for details.
7//
8//===----------------------------------------------------------------------===//
9//
10// This file is a part of ThreadSanitizer (TSan), a race detector.
11//
12//===----------------------------------------------------------------------===//
13
14#include "sanitizer_common/sanitizer_placement_new.h"
15#include "tsan_rtl.h"
16#include "tsan_mman.h"
17#include "tsan_flags.h"
18
19namespace __tsan {
20
21Processor *ProcCreate() {
22  void *mem = InternalAlloc(sizeof(Processor));
23  internal_memset(mem, 0, sizeof(Processor));
24  Processor *proc = new(mem) Processor;
25  proc->thr = nullptr;
26#if !SANITIZER_GO
27  AllocatorProcStart(proc);
28#endif
29  if (common_flags()->detect_deadlocks)
30    proc->dd_pt = ctx->dd->CreatePhysicalThread();
31  return proc;
32}
33
34void ProcDestroy(Processor *proc) {
35  CHECK_EQ(proc->thr, nullptr);
36#if !SANITIZER_GO
37  AllocatorProcFinish(proc);
38#endif
39  ctx->clock_alloc.FlushCache(&proc->clock_cache);
40  ctx->metamap.OnProcIdle(proc);
41  if (common_flags()->detect_deadlocks)
42     ctx->dd->DestroyPhysicalThread(proc->dd_pt);
43  proc->~Processor();
44  InternalFree(proc);
45}
46
47void ProcWire(Processor *proc, ThreadState *thr) {
48  CHECK_EQ(thr->proc1, nullptr);
49  CHECK_EQ(proc->thr, nullptr);
50  thr->proc1 = proc;
51  proc->thr = thr;
52}
53
54void ProcUnwire(Processor *proc, ThreadState *thr) {
55  CHECK_EQ(thr->proc1, proc);
56  CHECK_EQ(proc->thr, thr);
57  thr->proc1 = nullptr;
58  proc->thr = nullptr;
59}
60
61}  // namespace __tsan
62