1 //===-- memprof_posix.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 MemProfiler, a memory profiler. 10 // 11 // Posix-specific details. 12 //===----------------------------------------------------------------------===// 13 14 #include "sanitizer_common/sanitizer_platform.h" 15 #if !SANITIZER_POSIX 16 #error Only Posix supported 17 #endif 18 19 #include "memprof_thread.h" 20 #include "sanitizer_common/sanitizer_internal_defs.h" 21 22 #include <pthread.h> 23 24 namespace __memprof { 25 26 // ---------------------- TSD ---------------- {{{1 27 28 static pthread_key_t tsd_key; 29 static bool tsd_key_inited = false; 30 void TSDInit(void (*destructor)(void *tsd)) { 31 CHECK(!tsd_key_inited); 32 tsd_key_inited = true; 33 CHECK_EQ(0, pthread_key_create(&tsd_key, destructor)); 34 } 35 36 void *TSDGet() { 37 CHECK(tsd_key_inited); 38 return pthread_getspecific(tsd_key); 39 } 40 41 void TSDSet(void *tsd) { 42 CHECK(tsd_key_inited); 43 pthread_setspecific(tsd_key, tsd); 44 } 45 46 void PlatformTSDDtor(void *tsd) { 47 MemprofThreadContext *context = (MemprofThreadContext *)tsd; 48 if (context->destructor_iterations > 1) { 49 context->destructor_iterations--; 50 CHECK_EQ(0, pthread_setspecific(tsd_key, tsd)); 51 return; 52 } 53 MemprofThread::TSDDtor(tsd); 54 } 55 } // namespace __memprof 56