forked from OSchip/llvm-project
26 lines
490 B
C
26 lines
490 B
C
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#include <pthread.h>
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#include <string.h>
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#include <stdlib.h>
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#include <stdio.h>
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#include <unistd.h>
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void *volatile mem;
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volatile int len;
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void *Thread(void *p) {
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while ((p = __atomic_load_n(&mem, __ATOMIC_ACQUIRE)) == 0)
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usleep(100);
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memset(p, 0, len);
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return 0;
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}
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extern "C" void libfunc() {
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pthread_t t;
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pthread_create(&t, 0, Thread, 0);
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len = 10;
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__atomic_store_n(&mem, malloc(len), __ATOMIC_RELEASE);
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pthread_join(t, 0);
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free(mem);
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fprintf(stderr, "OK\n");
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}
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