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generated by cgit (git 2.34.1) at 2025-03-27 22:48:38 +0800
+ DBG("Can't get vm page size"); + return; + } + mib_free_size = 4; + if (sysctlnametomib("vm.stats.vm.v_free_count", mib_freecount, &mib_free_size) == -1) { + DBG("Can't get mib for mem free stat"); + return; + } + mib_cache_size = 4; + if (sysctlnametomib("vm.stats.vm.v_cache_count", mib_cachecount, &len) == -1) { + DBG("Can't get mib for cached mem stat"); + return; + } + mib_inactive_size = 4; + if (sysctlnametomib("vm.stats.vm.v_inactive_count", mib_inactivecount, &mib_inactive_size) == -1) { + DBG("Can't get mib for mem inactive stat"); + return; + } + //initialize swapinfo + mib_swapinfo_size = sizeof(mib_swapinfo) / sizeof(mib_swapinfo[0]); + if (sysctlnametomib("vm.swap_info", mib_swapinfo, &mib_swapinfo_size) == -1) { + DBG("Can't get mib for swapinfo"); + return; + } + init = 1; + } + //get current meminfo + len = sizeof(int); + if (sysctl(mib_freecount, mib_free_size, &freecount, &len, NULL, 0) == -1) { + DBG("Couldn't get mem free stat"); + return; + } + if (sysctl(mib_cachecount, mib_cache_size, &cachecount, &len, NULL, 0) == -1) { + DBG("Couldn't get cached mem stat"); + return; + } + if (sysctl(mib_inactivecount, mib_inactive_size, &inactivecount, &len, NULL, 0) == -1) { + DBG("Couldn't get inactive mem stat"); + return; + } + //save in kilobytes(same as /proc/meminfo) + stats.mem.total = realmem / 1024; + //For FreeBSD, there doesn't seem to be any firm consensus on the meaning of "memory used". + //Some utils count only wired memory as used, while others also include active and inactive memory. + // + //The 'top' utility doesn't bother to calculate "memory used" at all, but simply reports the values for + //active, inactive, wired, cached, and free. Unfortunately we can't follow that sensible approach here. + // + //The calculation below reflects the interpretation used by the sysinfo and freebsd_memory utils. + stats.mem.used = (realmem - pagesize * (freecount + cachecount + inactivecount)) / 1024; + + //get swapinfo + scale = pagesize / 1024; + for (n = 0;; ++n) { + mib_swapinfo[mib_swapinfo_size] = n; + len = sizeof xsw; + if (sysctl(mib_swapinfo, mib_swapinfo_size + 1, &xsw, &len, 0, 0) == -1) { + // not necessarily an error! + break; + } + if (xsw.xsw_version != XSWDEV_VERSION) { + DBG("XSW version mismatch"); + break; + } + stats.swap.total += xsw.xsw_nblks * scale; + stats.swap.used += xsw.xsw_used * scale; + } +} #else static void mem_usage() { - + } #endif