Created
September 8, 2022 12:10
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int main(int argc, char** argv) | |
{ | |
if (argc >= 2 && strcmp(argv[1], "netns-bench") == 0) { | |
flag_debug = false; | |
flag_net_injection = true; | |
flag_net_devices = true; | |
flag_wifi = true; | |
const int procs = std::max(1, atoi(argc >= 3 ? argv[2] : "")); | |
static int ops = 0; | |
for (int i = 0; i < procs; i++) { | |
pthread_t th; | |
pthread_create( | |
&th, 0, [](void* arg) -> void* { | |
int me = (int)(long)arg; | |
for (;; __atomic_fetch_add(&ops, 1, __ATOMIC_RELAXED)) { | |
int pid = fork(); | |
if (pid < 0) | |
fail("fork failed"); | |
if (pid == 0) { | |
procid = me; | |
if (unshare(CLONE_NEWNET)) | |
fail("CLONE_NEWNET failed"); | |
initialize_tun(); | |
initialize_netdevices(); | |
initialize_wifi_devices(); | |
return 0; | |
} | |
int status = 0; | |
while (waitpid(pid, &status, 0) != pid) { | |
} | |
if (WEXITSTATUS(status)) | |
failmsg("subprocess failed", "status=%d", WEXITSTATUS(status)); | |
} | |
return 0; | |
}, | |
(void*)(long)i); | |
} | |
for (;; sleep(1)) | |
printf("ops=%d\n", __atomic_exchange_n(&ops, 0, __ATOMIC_RELAXED)); | |
return 0; | |
} |
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