forked from OSchip/llvm-project
75 lines
2.3 KiB
C++
75 lines
2.3 KiB
C++
//===----------------------------------------------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#include <algorithm>
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#include <cstdio>
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#include <cstdlib>
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#include <__threading_support>
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#include <unistd.h>
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#include "../src/cxa_exception.h"
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typedef __cxxabiv1::__cxa_eh_globals globals_t ;
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void *thread_code (void *parm) {
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size_t *result = (size_t *) parm;
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globals_t *glob1, *glob2;
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glob1 = __cxxabiv1::__cxa_get_globals ();
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if ( NULL == glob1 )
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std::printf("Got null result from __cxa_get_globals\n");
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glob2 = __cxxabiv1::__cxa_get_globals_fast ();
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if ( glob1 != glob2 )
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std::printf("Got different globals!\n");
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*result = (size_t) glob1;
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#ifndef _LIBCXXABI_HAS_NO_THREADS
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sleep ( 1 );
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#endif
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return parm;
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}
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#ifndef _LIBCXXABI_HAS_NO_THREADS
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#define NUMTHREADS 10
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size_t thread_globals [ NUMTHREADS ] = { 0 };
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std::__libcpp_thread_t threads [ NUMTHREADS ];
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#endif
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int main() {
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#ifndef _LIBCXXABI_HAS_NO_THREADS
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// Make the threads, let them run, and wait for them to finish
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for ( int i = 0; i < NUMTHREADS; ++i )
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std::__libcpp_thread_create ( threads + i, thread_code, (void *) (thread_globals + i));
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for ( int i = 0; i < NUMTHREADS; ++i )
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std::__libcpp_thread_join ( &threads [ i ] );
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int retVal = 0;
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for ( int i = 0; i < NUMTHREADS; ++i ) {
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if ( 0 == thread_globals [ i ] ) {
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std::printf("Thread #%d had a zero global\n", i);
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retVal = 1;
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}
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}
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std::sort ( thread_globals, thread_globals + NUMTHREADS );
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for ( int i = 1; i < NUMTHREADS; ++i ) {
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if ( thread_globals [ i - 1 ] == thread_globals [ i ] ) {
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std::printf("Duplicate thread globals (%d and %d)\n", i-1, i);
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retVal = 2;
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}
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}
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return retVal;
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#else // _LIBCXXABI_HAS_NO_THREADS
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size_t thread_globals;
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thread_code(&thread_globals);
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// Check that __cxa_get_globals() is not NULL.
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return (thread_globals == 0) ? 1 : 0;
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#endif // !_LIBCXXABI_HAS_NO_THREADS
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}
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