| 1 |
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| 2 | #include <pthread.h>
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| 3 | #include <stdlib.h>
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| 4 | #include <signal.h>
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| 5 | #include <unistd.h>
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| 6 | #include <linux/compiler.h>
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| 7 | #include "../tests.h"
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| 8 |
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| 9 | static volatile sig_atomic_t done;
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| 10 |
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| 11 | static void sighandler(int sig __maybe_unused)
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| 12 | {
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| 13 | done = 1;
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| 14 | }
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| 15 |
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| 16 | static int noploop(int argc, const char **argv)
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| 17 | {
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| 18 | double sec = 1.0;
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| 19 |
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| 20 | pthread_setname_np(pthread_self(), "perf-noploop");
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| 21 | if (argc > 0)
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| 22 | sec = atof(argv[0]);
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| 23 |
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| 24 | if (!(sec > 0.0)) {
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| 25 | fprintf(stderr, "Error: seconds (%f) must be > 0\n", sec);
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| 26 | return 1;
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| 27 | }
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| 28 |
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| 29 | signal(SIGINT, sighandler);
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| 30 | signal(SIGALRM, sighandler);
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| 31 |
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| 32 | if (sec < 1.0) {
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| 33 | useconds_t usecs = (useconds_t)(sec * 1000000.0);
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| 34 |
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| 35 | ualarm(usecs > 0 ? usecs : 1, 0);
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| 36 | } else
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| 37 | alarm((unsigned int)sec);
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| 38 |
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| 39 | while (!done)
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| 40 | continue;
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| 41 |
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| 42 | return 0;
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| 43 | }
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| 44 |
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| 45 | DEFINE_WORKLOAD(noploop);
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