2e4e7d04d2
On Darwin, the setting ignore_noninstrumented_modules is used to suppress false positives in code that users don't have control of. The recently added "external" API (which can be used to detect races on objects provided by system libraries, but the race is actually user's fault) ignores this flag and it can report issues in non-instrumented modules. This patch fixes that. Differential Revision: https://reviews.llvm.org/D31553 llvm-svn: 301000
69 lines
1.8 KiB
C++
69 lines
1.8 KiB
C++
// This file is used from other tests.
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// RUN: true
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#include <dlfcn.h>
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#include <stdio.h>
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#include <stdlib.h>
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struct MyObject;
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typedef MyObject *MyObjectRef;
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extern "C" {
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void InitializeLibrary();
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MyObject *ObjectCreate();
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long ObjectRead(MyObject *);
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void ObjectWrite(MyObject *, long);
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void ObjectWriteAnother(MyObject *, long);
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}
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struct MyObject {
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long _val;
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long _another;
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};
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#if defined(USE_TSAN_CALLBACKS)
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static void *tag;
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void *(*callback_register_tag)(const char *object_type);
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void *(*callback_assign_tag)(void *addr, void *tag);
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void (*callback_read)(void *addr, void *caller_pc, void *tag);
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void (*callback_write)(void *addr, void *caller_pc, void *tag);
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#endif
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void InitializeLibrary() {
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#if defined(USE_TSAN_CALLBACKS)
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callback_register_tag = (decltype(callback_register_tag))dlsym(RTLD_DEFAULT, "__tsan_external_register_tag");
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callback_assign_tag = (decltype(callback_assign_tag))dlsym(RTLD_DEFAULT, "__tsan_external_assign_tag");
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callback_read = (decltype(callback_read))dlsym(RTLD_DEFAULT, "__tsan_external_read");
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callback_write = (decltype(callback_write))dlsym(RTLD_DEFAULT, "__tsan_external_write");
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tag = callback_register_tag("MyLibrary::MyObject");
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#endif
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}
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MyObject *ObjectCreate() {
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MyObject *ref = (MyObject *)malloc(sizeof(MyObject));
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#if defined(USE_TSAN_CALLBACKS)
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callback_assign_tag(ref, tag);
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#endif
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return ref;
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}
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long ObjectRead(MyObject *ref) {
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#if defined(USE_TSAN_CALLBACKS)
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callback_read(ref, __builtin_return_address(0), tag);
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#endif
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return ref->_val;
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}
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void ObjectWrite(MyObject *ref, long val) {
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#if defined(USE_TSAN_CALLBACKS)
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callback_write(ref, __builtin_return_address(0), tag);
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#endif
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ref->_val = val;
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}
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void ObjectWriteAnother(MyObject *ref, long val) {
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#if defined(USE_TSAN_CALLBACKS)
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callback_write(ref, __builtin_return_address(0), tag);
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#endif
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ref->_another = val;
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}
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