| 1 | // RUN: %clangxx_tsan -O1 %s -o %t && %env_tsan_opts=atexit_sleep_ms=0 %run %t 2>&1 | FileCheck %s |
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| 2 | #include "../test.h" |
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| 3 | #include <errno.h> |
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| 4 | #include <sched.h> |
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| 5 | #include <sys/types.h> |
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| 6 | #include <sys/wait.h> |
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| 7 | |
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| 8 | long counter; |
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| 9 | |
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| 10 | static void *incrementer(void *arg) { |
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| 11 | for (;;) |
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| 12 | __sync_fetch_and_add(&counter, 1); |
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| 13 | return 0; |
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| 14 | } |
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| 15 | |
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| 16 | static int cloned(void *arg) { |
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| 17 | for (int i = 0; i < 1000; i++) |
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| 18 | __sync_fetch_and_add(&counter, 1); |
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| 19 | exit(status: 0); |
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| 20 | return 0; |
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| 21 | } |
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| 22 | |
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| 23 | int main() { |
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| 24 | barrier_init(barrier: &barrier, count: 2); |
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| 25 | pthread_t th; |
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| 26 | pthread_create(newthread: &th, attr: 0, start_routine: incrementer, arg: 0); |
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| 27 | for (int i = 0; i < 100; i++) { |
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| 28 | char stack[64 << 10] __attribute__((aligned(64))); |
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| 29 | int pid = clone(fn: cloned, child_stack: stack + sizeof(stack), SIGCHLD, arg: 0); |
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| 30 | if (pid == -1) { |
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| 31 | fprintf(stderr, format: "failed to clone: %d\n" , errno); |
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| 32 | exit(status: 1); |
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| 33 | } |
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| 34 | while (wait(stat_loc: 0) != pid) { |
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| 35 | } |
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| 36 | } |
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| 37 | fprintf(stderr, format: "DONE\n" ); |
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| 38 | } |
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| 39 | |
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| 40 | // CHECK: DONE |
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| 41 | |
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