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