mirror of
https://review.haiku-os.org/haiku
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6bda235a59
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@28207 a95241bf-73f2-0310-859d-f6bbb57e9c96
110 lines
2.5 KiB
C++
110 lines
2.5 KiB
C++
/*
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* Copyright 2008, Axel Dörfler, axeld@pinc-software.de.
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* Distributed under the terms of the MIT License.
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*/
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#include <getopt.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <system_info.h>
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static struct option const kLongOptions[] = {
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{"periodic", no_argument, 0, 'p'},
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{"rate", required_argument, 0, 'r'},
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{"help", no_argument, 0, 'h'},
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{NULL}
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};
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extern const char *__progname;
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static const char *kProgramName = __progname;
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void
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usage(int status)
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{
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fprintf(stderr, "usage: %s [-p] [-r <time>]\n"
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" -p,--periodic\tDumps changes periodically every second.\n"
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" -r,--rate\tDumps changes periodically every <time> milli seconds.\n",
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kProgramName);
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exit(status);
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}
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int
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main(int argc, char** argv)
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{
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bool periodically = false;
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bigtime_t rate = 1000000LL;
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int c;
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while ((c = getopt_long(argc, argv, "pr:h", kLongOptions, NULL)) != -1) {
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switch (c) {
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case 0:
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break;
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case 'p':
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periodically = true;
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break;
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case 'r':
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rate = atoi(optarg) * 1000LL;
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if (rate <= 0) {
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fprintf(stderr, "%s: Invalid rate: %s\n",
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kProgramName, optarg);
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return 1;
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}
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periodically = true;
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break;
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case 'h':
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usage(0);
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break;
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default:
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usage(1);
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break;
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}
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}
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system_memory_info info;
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status_t status = get_system_info_etc(B_MEMORY_INFO, &info,
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sizeof(system_memory_info));
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if (status != B_OK) {
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fprintf(stderr, "%s: cannot get system info: %s\n", kProgramName,
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strerror(status));
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return 1;
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}
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printf("max memory:\t\t%Lu\n", info.max_memory);
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printf("free memory:\t\t%Lu\n", info.free_memory);
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printf("needed memory:\t\t%Lu\n", info.needed_memory);
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printf("block cache memory:\t%Lu\n", info.block_cache_memory);
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printf("max swap space:\t\t%Lu\n", info.max_swap_space);
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printf("free swap space:\t%Lu\n", info.free_swap_space);
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printf("page faults:\t\t%lu\n", info.page_faults);
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if (periodically) {
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puts("\npage faults used memory used swap block cache");
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system_memory_info lastInfo = info;
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while (true) {
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snooze(rate);
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get_system_info_etc(B_MEMORY_INFO, &info,
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sizeof(system_memory_info));
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printf("%11ld %11Ld %11Ld %11Ld\n",
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(int32)info.page_faults - lastInfo.page_faults,
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(info.max_memory - info.free_memory)
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- (lastInfo.max_memory - lastInfo.free_memory),
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(info.max_swap_space - info.free_swap_space)
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- (lastInfo.max_swap_space - lastInfo.free_swap_space),
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info.block_cache_memory - lastInfo.block_cache_memory);
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lastInfo = info;
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}
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}
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return 0;
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}
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