mirror of
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133 lines
4.2 KiB
C++
Vendored
133 lines
4.2 KiB
C++
Vendored
#ifndef TSAN_INTERCEPTORS_H
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#define TSAN_INTERCEPTORS_H
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#include "sanitizer_common/sanitizer_stacktrace.h"
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#include "tsan_rtl.h"
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namespace __tsan {
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class ScopedInterceptor {
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public:
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ScopedInterceptor(ThreadState *thr, const char *fname, uptr pc);
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~ScopedInterceptor();
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void DisableIgnores() {
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if (UNLIKELY(ignoring_))
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DisableIgnoresImpl();
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}
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void EnableIgnores() {
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if (UNLIKELY(ignoring_))
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EnableIgnoresImpl();
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}
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private:
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ThreadState *const thr_;
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bool in_ignored_lib_ = false;
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bool in_blocking_func_ = false;
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bool ignoring_ = false;
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void DisableIgnoresImpl();
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void EnableIgnoresImpl();
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};
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struct TsanInterceptorContext {
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ThreadState *thr;
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const uptr pc;
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};
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LibIgnore *libignore();
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#if !SANITIZER_GO
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inline bool in_symbolizer() {
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return UNLIKELY(cur_thread_init()->in_symbolizer);
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}
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#endif
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inline bool MustIgnoreInterceptor(ThreadState *thr) {
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return !thr->is_inited || thr->ignore_interceptors || thr->in_ignored_lib;
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}
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} // namespace __tsan
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#define SCOPED_INTERCEPTOR_RAW(func, ...) \
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ThreadState *thr = cur_thread_init(); \
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ScopedInterceptor si(thr, #func, GET_CALLER_PC()); \
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UNUSED const uptr pc = GET_CURRENT_PC();
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#ifdef __powerpc64__
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// Debugging of crashes on powerpc after commit:
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// c80604f7a3 ("tsan: remove real func check from interceptors")
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// Somehow replacing if with DCHECK leads to strange failures in:
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// SanitizerCommon-tsan-powerpc64le-Linux :: Linux/ptrace.cpp
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// https://lab.llvm.org/buildbot/#/builders/105
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// https://lab.llvm.org/buildbot/#/builders/121
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// https://lab.llvm.org/buildbot/#/builders/57
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# define CHECK_REAL_FUNC(func) \
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if (REAL(func) == 0) { \
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Report("FATAL: ThreadSanitizer: failed to intercept %s\n", #func); \
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Die(); \
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}
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#else
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# define CHECK_REAL_FUNC(func) DCHECK(REAL(func))
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#endif
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#define SCOPED_TSAN_INTERCEPTOR(func, ...) \
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SCOPED_INTERCEPTOR_RAW(func, __VA_ARGS__); \
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CHECK_REAL_FUNC(func); \
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if (MustIgnoreInterceptor(thr)) \
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return REAL(func)(__VA_ARGS__);
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#define SCOPED_TSAN_INTERCEPTOR_USER_CALLBACK_START() \
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si.DisableIgnores();
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#define SCOPED_TSAN_INTERCEPTOR_USER_CALLBACK_END() \
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si.EnableIgnores();
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#define TSAN_INTERCEPTOR(ret, func, ...) INTERCEPTOR(ret, func, __VA_ARGS__)
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#if SANITIZER_FREEBSD
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# define TSAN_INTERCEPTOR_FREEBSD_ALIAS(ret, func, ...) \
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TSAN_INTERCEPTOR(ret, _pthread_##func, __VA_ARGS__) \
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ALIAS(WRAP(pthread_##func));
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#else
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# define TSAN_INTERCEPTOR_FREEBSD_ALIAS(ret, func, ...)
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#endif
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#if SANITIZER_NETBSD
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# define TSAN_INTERCEPTOR_NETBSD_ALIAS(ret, func, ...) \
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TSAN_INTERCEPTOR(ret, __libc_##func, __VA_ARGS__) \
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ALIAS(WRAP(pthread_##func));
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# define TSAN_INTERCEPTOR_NETBSD_ALIAS_THR(ret, func, ...) \
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TSAN_INTERCEPTOR(ret, __libc_thr_##func, __VA_ARGS__) \
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ALIAS(WRAP(pthread_##func));
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# define TSAN_INTERCEPTOR_NETBSD_ALIAS_THR2(ret, func, func2, ...) \
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TSAN_INTERCEPTOR(ret, __libc_thr_##func, __VA_ARGS__) \
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ALIAS(WRAP(pthread_##func2));
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#else
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# define TSAN_INTERCEPTOR_NETBSD_ALIAS(ret, func, ...)
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# define TSAN_INTERCEPTOR_NETBSD_ALIAS_THR(ret, func, ...)
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# define TSAN_INTERCEPTOR_NETBSD_ALIAS_THR2(ret, func, func2, ...)
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#endif
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#define COMMON_INTERCEPT_FUNCTION(name) INTERCEPT_FUNCTION(name)
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#define COMMON_INTERCEPTOR_NOTHING_IS_INITIALIZED \
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(!cur_thread_init()->is_inited)
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#define COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ptr, size) \
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MemoryAccessRange(((TsanInterceptorContext *)ctx)->thr, \
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((TsanInterceptorContext *)ctx)->pc, (uptr)ptr, size, \
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true)
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#define COMMON_INTERCEPTOR_READ_RANGE(ctx, ptr, size) \
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MemoryAccessRange(((TsanInterceptorContext *) ctx)->thr, \
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((TsanInterceptorContext *) ctx)->pc, (uptr) ptr, size, \
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false)
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#define COMMON_INTERCEPTOR_ENTER(ctx, func, ...) \
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SCOPED_TSAN_INTERCEPTOR(func, __VA_ARGS__); \
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TsanInterceptorContext _ctx = {thr, pc}; \
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ctx = (void *)&_ctx; \
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(void)ctx;
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#endif // TSAN_INTERCEPTORS_H
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