mirror of
https://github.com/jemalloc/jemalloc.git
synced 2026-04-16 23:51:44 +03:00
73 lines
1.9 KiB
C
73 lines
1.9 KiB
C
static inline void
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time_func(
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timedelta_t *timer, uint64_t nwarmup, uint64_t niter, void (*func)(void)) {
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uint64_t i;
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for (i = 0; i < nwarmup; i++) {
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func();
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}
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timer_start(timer);
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for (i = 0; i < niter; i++) {
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func();
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}
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timer_stop(timer);
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}
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#define FMT_NSECS_BUF_SIZE 100
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/* Print nanoseconds / iter into the buffer "buf". */
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static inline void
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fmt_nsecs(uint64_t usec, uint64_t iters, char *buf) {
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uint64_t nsec = usec * 1000;
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/* We'll display 3 digits after the decimal point. */
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uint64_t nsec1000 = nsec * 1000;
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uint64_t nsecs_per_iter1000 = nsec1000 / iters;
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uint64_t intpart = nsecs_per_iter1000 / 1000;
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uint64_t fracpart = nsecs_per_iter1000 % 1000;
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malloc_snprintf(buf, FMT_NSECS_BUF_SIZE, "%" FMTu64 ".%03" FMTu64,
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intpart, fracpart);
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}
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static inline void
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compare_funcs(uint64_t nwarmup, uint64_t niter, const char *name_a,
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void(*func_a), const char *name_b, void(*func_b)) {
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timedelta_t timer_a, timer_b;
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char ratio_buf[6];
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void *p;
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p = mallocx(1, 0);
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if (p == NULL) {
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test_fail("Unexpected mallocx() failure");
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return;
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}
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time_func(&timer_a, nwarmup, niter, (void (*)(void))func_a);
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time_func(&timer_b, nwarmup, niter, (void (*)(void))func_b);
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uint64_t usec_a = timer_usec(&timer_a);
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char buf_a[FMT_NSECS_BUF_SIZE];
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fmt_nsecs(usec_a, niter, buf_a);
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uint64_t usec_b = timer_usec(&timer_b);
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char buf_b[FMT_NSECS_BUF_SIZE];
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fmt_nsecs(usec_b, niter, buf_b);
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timer_ratio(&timer_a, &timer_b, ratio_buf, sizeof(ratio_buf));
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malloc_printf("%" FMTu64 " iterations, %s=%" FMTu64
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"us (%s ns/iter), "
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"%s=%" FMTu64
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"us (%s ns/iter), time consumption ratio=%s:1\n",
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niter, name_a, usec_a, buf_a, name_b, usec_b, buf_b, ratio_buf);
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dallocx(p, 0);
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}
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static inline void *
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no_opt_ptr(void *ptr) {
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#ifdef JEMALLOC_HAVE_ASM_VOLATILE
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asm volatile("" : "+r"(ptr));
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#else
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void *volatile dup = ptr;
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ptr = dup;
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#endif
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return ptr;
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}
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