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5c1613d104
git-subtree-dir: submodules/TelegramCore git-subtree-mainline: 971273e8f8f49a47f14b251d2f35e3445a61fc3f git-subtree-split: 9561227540acef69894e6546395ab223a6233600
30 lines
740 B
Objective-C
30 lines
740 B
Objective-C
#import "MonotonicTime.h"
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#include <sys/sysctl.h>
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int64_t MonotonicGetBootTimestamp() {
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struct timeval boottime;
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int mib[2] = {CTL_KERN, KERN_BOOTTIME};
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size_t size = sizeof(boottime);
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int rc = sysctl(mib, 2, &boottime, &size, NULL, 0);
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if (rc != 0) {
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return 0;
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}
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return boottime.tv_sec * 1000000 + boottime.tv_usec;
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}
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int64_t MonotonicGetUptime() {
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int64_t before_now;
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int64_t after_now;
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struct timeval now;
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after_now = MonotonicGetBootTimestamp();
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do {
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before_now = after_now;
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gettimeofday(&now, NULL);
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after_now = MonotonicGetBootTimestamp();
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} while (after_now != before_now);
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return now.tv_sec * 1000000 + now.tv_usec - before_now;
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}
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