libsanitizer/tsan/tsan_rtl_proc.cc

   1 //===-- tsan_rtl_proc.cc ------------------------------------------------===//
   2 //
   3 // This file is distributed under the University of Illinois Open Source
   4 // License. See LICENSE.TXT for details.
   5 //
   6 //===----------------------------------------------------------------------===//
   7 //
   8 // This file is a part of ThreadSanitizer (TSan), a race detector.
   9 //
  10 //===----------------------------------------------------------------------===//
  11
  12 #include "sanitizer_common/sanitizer_placement_new.h"
  13 #include "tsan_rtl.h"
  14 #include "tsan_mman.h"
  15 #include "tsan_flags.h"
  16
  17 namespace __tsan {
  18
  19 Processor *ProcCreate() {
  20   void *mem = InternalAlloc(sizeof(Processor));
  21   internal_memset(mem, 0, sizeof(Processor));
  22   Processor *proc = new(mem) Processor;
  23   proc->thr = nullptr;
  24 #if !SANITIZER_GO
  25   AllocatorProcStart(proc);
  26 #endif
  27   if (common_flags()->detect_deadlocks)
  28     proc->dd_pt = ctx->dd->CreatePhysicalThread();
  29   return proc;
  30 }
  31
  32 void ProcDestroy(Processor *proc) {
  33   CHECK_EQ(proc->thr, nullptr);
  34 #if !SANITIZER_GO
  35   AllocatorProcFinish(proc);
  36 #endif
  37   ctx->clock_alloc.FlushCache(&proc->clock_cache);
  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
  45 void 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
  52 void 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