1 //===-------------------- test_exception_storage.cpp ----------------------===// 2 // 3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4 // See https://llvm.org/LICENSE.txt for license information. 5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6 // 7 //===----------------------------------------------------------------------===// 8 9 #include <cstdlib> 10 #include <algorithm> 11 #include <iostream> 12 #include <__threading_support> 13 #include <unistd.h> 14 15 #include "../src/cxa_exception.h" 16 17 typedef __cxxabiv1::__cxa_eh_globals globals_t ; 18 19 void *thread_code (void *parm) { 20 size_t *result = (size_t *) parm; 21 globals_t *glob1, *glob2; 22 23 glob1 = __cxxabiv1::__cxa_get_globals (); 24 if ( NULL == glob1 ) 25 std::cerr << "Got null result from __cxa_get_globals" << std::endl; 26 27 glob2 = __cxxabiv1::__cxa_get_globals_fast (); 28 if ( glob1 != glob2 ) 29 std::cerr << "Got different globals!" << std::endl; 30 31 *result = (size_t) glob1; 32 sleep ( 1 ); 33 return parm; 34 } 35 36 #ifndef _LIBCXXABI_HAS_NO_THREADS 37 #define NUMTHREADS 10 38 size_t thread_globals [ NUMTHREADS ] = { 0 }; 39 std::__libcpp_thread_t threads [ NUMTHREADS ]; 40 #endif 41 42 int main () { 43 int retVal = 0; 44 45 #ifndef _LIBCXXABI_HAS_NO_THREADS 46 // Make the threads, let them run, and wait for them to finish 47 for ( int i = 0; i < NUMTHREADS; ++i ) 48 std::__libcpp_thread_create ( threads + i, thread_code, (void *) (thread_globals + i)); 49 for ( int i = 0; i < NUMTHREADS; ++i ) 50 std::__libcpp_thread_join ( &threads [ i ] ); 51 52 for ( int i = 0; i < NUMTHREADS; ++i ) 53 if ( 0 == thread_globals [ i ] ) { 54 std::cerr << "Thread #" << i << " had a zero global" << std::endl; 55 retVal = 1; 56 } 57 58 std::sort ( thread_globals, thread_globals + NUMTHREADS ); 59 for ( int i = 1; i < NUMTHREADS; ++i ) 60 if ( thread_globals [ i - 1 ] == thread_globals [ i ] ) { 61 std::cerr << "Duplicate thread globals (" << i-1 << " and " << i << ")" << std::endl; 62 retVal = 2; 63 } 64 #else // _LIBCXXABI_HAS_NO_THREADS 65 size_t thread_globals; 66 // Check that __cxa_get_globals() is not NULL. 67 if (thread_code(&thread_globals) == 0) { 68 retVal = 1; 69 } 70 #endif // !_LIBCXXABI_HAS_NO_THREADS 71 return retVal; 72 } 73