1 //===-- asan_posix.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 AddressSanitizer, an address sanity checker. 9 // 10 // Posix-specific details. 11 //===----------------------------------------------------------------------===// 12 13 #include "sanitizer_common/sanitizer_platform.h" 14 #if SANITIZER_POSIX 15 16 #include "asan_internal.h" 17 #include "asan_interceptors.h" 18 #include "asan_mapping.h" 19 #include "asan_report.h" 20 #include "asan_stack.h" 21 #include "sanitizer_common/sanitizer_libc.h" 22 #include "sanitizer_common/sanitizer_posix.h" 23 #include "sanitizer_common/sanitizer_procmaps.h" 24 25 #include <pthread.h> 26 #include <stdlib.h> 27 #include <sys/time.h> 28 #include <sys/resource.h> 29 #include <unistd.h> 30 31 namespace __asan { 32 33 void AsanOnDeadlySignal(int signo, void *siginfo, void *context) { 34 StartReportDeadlySignal(); 35 SignalContext sig(siginfo, context); 36 ReportDeadlySignal(sig); 37 } 38 39 // ---------------------- TSD ---------------- {{{1 40 41 static pthread_key_t tsd_key; 42 static bool tsd_key_inited = false; 43 void AsanTSDInit(void (*destructor)(void *tsd)) { 44 CHECK(!tsd_key_inited); 45 tsd_key_inited = true; 46 CHECK_EQ(0, pthread_key_create(&tsd_key, destructor)); 47 } 48 49 void *AsanTSDGet() { 50 CHECK(tsd_key_inited); 51 return pthread_getspecific(tsd_key); 52 } 53 54 void AsanTSDSet(void *tsd) { 55 CHECK(tsd_key_inited); 56 pthread_setspecific(tsd_key, tsd); 57 } 58 59 void PlatformTSDDtor(void *tsd) { 60 AsanThreadContext *context = (AsanThreadContext*)tsd; 61 if (context->destructor_iterations > 1) { 62 context->destructor_iterations--; 63 CHECK_EQ(0, pthread_setspecific(tsd_key, tsd)); 64 return; 65 } 66 AsanThread::TSDDtor(tsd); 67 } 68 } // namespace __asan 69 70 #endif // SANITIZER_POSIX 71