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