| 1 | // RUN: %clangxx_tsan -O1 %s -o %t && %run %t 2>&1 | FileCheck %s |
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| 2 | #include "java.h" |
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| 3 | #include <errno.h> |
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| 4 | #include <sys/mman.h> |
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| 5 | |
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| 6 | int main() { |
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| 7 | // Test that munmap interceptor resets meta shadow for the memory range. |
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| 8 | // Previously __tsan_java_move failed because it encountered non-zero meta |
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| 9 | // shadow for the destination. |
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| 10 | int const kHeapSize = 1024 * 1024; |
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| 11 | jptr jheap = (jptr)mmap(addr: 0, len: kHeapSize, PROT_READ | PROT_WRITE, |
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| 12 | MAP_ANON | MAP_PRIVATE, fd: -1, offset: 0); |
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| 13 | if (jheap == (jptr)MAP_FAILED) |
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| 14 | return printf(format: "mmap failed with %d\n" , errno); |
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| 15 | __atomic_store_n((int*)jheap, 1, __ATOMIC_RELEASE); |
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| 16 | munmap(addr: (void*)jheap, len: kHeapSize); |
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| 17 | jheap = (jptr)mmap(addr: (void*)jheap, len: kHeapSize, PROT_READ | PROT_WRITE, |
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| 18 | MAP_ANON | MAP_PRIVATE, fd: -1, offset: 0); |
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| 19 | if (jheap == (jptr)MAP_FAILED) |
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| 20 | return printf(format: "second mmap failed with %d\n" , errno); |
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| 21 | __tsan_java_init(heap_begin: jheap, heap_size: kHeapSize); |
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| 22 | __tsan_java_move(src: jheap + 16, dst: jheap, size: 16); |
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| 23 | fprintf(stderr, format: "DONE\n" ); |
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| 24 | return __tsan_java_fini(); |
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| 25 | } |
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| 26 | |
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| 27 | // CHECK-NOT: WARNING: ThreadSanitizer: data race |
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| 28 | // CHECK: DONE |
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| 29 | |
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