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 18 namespace __tsan { 19 20 Processor *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 33 void 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 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 60