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