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150
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1 // RUN: rm -rf %t-dir
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2 // RUN: mkdir %t-dir
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3
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223
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4 // RUN: %clangxx_tsan -O1 -fno-builtin %s -DLIB -fPIC -fno-sanitize=thread -shared -o %t-dir/libignore_lib1.so
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150
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5 // RUN: %clangxx_tsan -O1 %s %link_libcxx_tsan -o %t-dir/executable
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6 // RUN: echo running w/o suppressions:
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7 // RUN: %deflake %run %t-dir/executable | FileCheck %s --check-prefix=CHECK-NOSUPP
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8 // RUN: echo running with suppressions:
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9 // RUN: %env_tsan_opts=suppressions='%s.supp' %run %t-dir/executable 2>&1 | FileCheck %s --check-prefix=CHECK-WITHSUPP
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10
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11 // REQUIRES: stable-runtime
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252
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12 // UNSUPPORTED: target=powerpc64le{{.*}}
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150
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13 // FIXME: This test occasionally fails on powerpc64 LE possibly starting with
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14 // r279664. Re-enable the test once the problem(s) have been fixed.
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15
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16 // Previously the test episodically failed with:
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17 // ThreadSanitizer: called_from_lib suppression '/libignore_lib1.so$' is
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18 // matched against 2 libraries: '/libignore_lib1.so' and '/libignore_lib1.so'
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19 // This was caused by non-atomicity of reading of /proc/self/maps.
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20
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21 // ReadProcMaps() on NetBSD does not handle >=1MB of memory layout information
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252
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22 // UNSUPPORTED: target={{.*netbsd.*}}
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150
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23
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24 #ifndef LIB
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25
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26 #include <dlfcn.h>
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27 #include <sys/mman.h>
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28 #include <stdlib.h>
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29 #include <stdio.h>
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30 #include <errno.h>
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31 #include <libgen.h>
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32 #include <string>
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33 #include "test.h"
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34
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35 #ifndef MAP_32BIT
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36 # define MAP_32BIT 0
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37 #endif
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38
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39 #ifdef __APPLE__
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40 # define TSAN_MAP_ANON MAP_ANON
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41 #else
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42 # define TSAN_MAP_ANON MAP_ANONYMOUS
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43 #endif
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44
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45 void *thr(void *arg) {
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46 // This thread creates lots of separate mappings in /proc/self/maps before
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47 // the ignored library.
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48 for (int i = 0; i < 10000; i++) {
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49 if (i == 5000)
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50 barrier_wait(&barrier);
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51 mmap(0, 4096, PROT_READ, TSAN_MAP_ANON | MAP_PRIVATE | MAP_32BIT, -1 , 0);
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52 mmap(0, 4096, PROT_WRITE, TSAN_MAP_ANON | MAP_PRIVATE | MAP_32BIT, -1 , 0);
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53 }
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54 return 0;
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55 }
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56
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57 int main(int argc, char **argv) {
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58 barrier_init(&barrier, 2);
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59 pthread_t th;
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60 pthread_create(&th, 0, thr, 0);
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61 barrier_wait(&barrier);
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62 std::string lib = std::string(dirname(argv[0])) + "/libignore_lib1.so";
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63 void *h = dlopen(lib.c_str(), RTLD_GLOBAL | RTLD_NOW);
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64 if (h == 0)
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65 exit(printf("failed to load the library (%d)\n", errno));
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66 void (*f)() = (void(*)())dlsym(h, "libfunc");
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67 if (f == 0)
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68 exit(printf("failed to find the func (%d)\n", errno));
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69 pthread_join(th, 0);
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70 f();
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71 }
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72
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73 #else // #ifdef LIB
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74
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75 #include "ignore_lib_lib.h"
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76
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77 #endif // #ifdef LIB
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78
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79 // CHECK-NOSUPP: WARNING: ThreadSanitizer: data race
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80 // CHECK-NOSUPP: OK
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81
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82 // CHECK-WITHSUPP-NOT: WARNING: ThreadSanitizer: data race
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83 // CHECK-WITHSUPP: OK
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