mirror of
https://github.com/sheumann/hush.git
synced 2024-12-25 18:33:06 +00:00
nmeter: new applet. ~4k
Fix build proble on x86_64
This commit is contained in:
Denis Vlasenko
parent
1114de7219
commit
1db39b2f51
@ -13,7 +13,6 @@ CPPFLAGS += \
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-D"BB_VER=KBUILD_STR($(BB_VER))" -DBB_BT=AUTOCONF_TIMESTAMP \
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-Wall -Wstrict-prototypes -Wshadow -Werror \
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-funsigned-char -fno-builtin-strlen -finline-limit=0 -static-libgcc \
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-Os -mpreferred-stack-boundary=2 \
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-falign-functions=1 -falign-jumps=1 -falign-loops=1 \
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-Os -falign-functions=1 -falign-jumps=1 -falign-loops=1 \
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-fomit-frame-pointer -ffunction-sections -fdata-sections \
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-funsigned-char -fno-builtin-strlen \
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@ -2,4 +2,4 @@
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# Build system
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# ==========================================================================
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CPPFLAGS += -march=i386
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CPPFLAGS += -march=i386 -mpreferred-stack-boundary=2
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@ -207,6 +207,7 @@ USE_NAMEIF(APPLET(nameif, _BB_DIR_SBIN, _BB_SUID_NEVER))
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USE_NC(APPLET(nc, _BB_DIR_USR_BIN, _BB_SUID_NEVER))
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USE_NETSTAT(APPLET(netstat, _BB_DIR_BIN, _BB_SUID_NEVER))
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USE_NICE(APPLET(nice, _BB_DIR_BIN, _BB_SUID_NEVER))
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USE_NMETER(APPLET(nmeter, _BB_DIR_USR_BIN, _BB_SUID_NEVER))
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USE_NOHUP(APPLET(nohup, _BB_DIR_USR_BIN, _BB_SUID_NEVER))
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USE_NSLOOKUP(APPLET(nslookup, _BB_DIR_USR_BIN, _BB_SUID_NEVER))
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USE_OD(APPLET(od, _BB_DIR_USR_BIN, _BB_SUID_NEVER))
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@ -2172,6 +2172,30 @@ USE_FEATURE_MDEV_CONFIG( \
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"Options:\n" \
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"\t-n ADJUST\tAdjust the scheduling priority by ADJUST"
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#define nmeter_trivial_usage \
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"format_string"
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#define nmeter_full_usage \
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"Nmeter monitors your system in real time.\n\n" \
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"Format specifiers:\n" \
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"%Nc or %[cN] monitor CPU. N - bar size, default 10\n" \
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" (displays: S:system U:user N:niced D:iowait I:irq i:softirq)\n" \
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"%[niface] monitor network interface 'iface'\n" \
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"%m monitor allocated memory\n" \
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"%[mf] monitor free memory\n" \
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"%[mt] monitor total memory\n" \
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"%s monitor allocated swap\n" \
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"%f monitor number of used file descriptors\n" \
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"%Ni monitor total/specific IRQ rate\n" \
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"%x monitor context switch rate\n" \
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"%p monitor forks\n" \
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"%[pn] monitor # of processes\n" \
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"%b monitor block io\n" \
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"%Nt show time (with N decimal points)\n" \
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"%Nd milliseconds between updates (default=1000)\n" \
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"%r print <cr> instead of <lf> at EOL"
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#define nmeter_example_usage \
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"nmeter '%250d%t %20c int %i bio %b mem %m forks%p'"
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#define nohup_trivial_usage \
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"COMMAND [ARGS]"
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#define nohup_full_usage \
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@ -114,10 +114,9 @@ int xopen3(const char *pathname, int flags, int mode)
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void xread(int fd, void *buf, size_t count)
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{
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while (count) {
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ssize_t size;
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if ((size = safe_read(fd, buf, count)) < 1)
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bb_error_msg_and_die("Short read");
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ssize_t size = safe_read(fd, buf, count);
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if (size < 1)
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bb_error_msg_and_die("short read");
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count -= size;
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buf = ((char *) buf) + size;
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}
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@ -127,10 +126,9 @@ void xread(int fd, void *buf, size_t count)
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void xwrite(int fd, void *buf, size_t count)
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{
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while (count) {
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ssize_t size;
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if ((size = safe_write(fd, buf, count)) < 1)
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bb_error_msg_and_die("Short write");
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ssize_t size = safe_write(fd, buf, count);
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if (size < 1)
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bb_error_msg_and_die("short write");
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count -= size;
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buf = ((char *) buf) + size;
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}
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@ -149,7 +147,7 @@ unsigned char xread_char(int fd)
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xread(fd, &tmp, 1);
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return(tmp);
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return tmp;
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}
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// Die with supplied error message if this FILE * has ferror set.
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@ -220,7 +218,7 @@ int wait4pid(int pid)
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void xsetenv(const char *key, const char *value)
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{
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if(setenv(key, value, 1))
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if (setenv(key, value, 1))
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bb_error_msg_and_die(bb_msg_memory_exhausted);
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}
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@ -278,6 +278,12 @@ config MT
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to advance or rewind a tape past a specified number of archive
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files on the tape.
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config NMETER
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bool "nmeter"
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default n
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help
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nmeter prints various system parameters continuously.
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config READAHEAD
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bool "readahead"
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default n
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@ -18,6 +18,7 @@ lib-$(CONFIG_LESS) += less.o
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lib-$(CONFIG_MAKEDEVS) += makedevs.o
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lib-$(CONFIG_MOUNTPOINT) += mountpoint.o
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lib-$(CONFIG_MT) += mt.o
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lib-$(CONFIG_NMETER) += nmeter.o
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lib-$(CONFIG_READAHEAD) += readahead.o
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lib-$(CONFIG_RUNLEVEL) += runlevel.o
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lib-$(CONFIG_RX) += rx.o
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891
miscutils/nmeter.c
Normal file
891
miscutils/nmeter.c
Normal file
@ -0,0 +1,891 @@
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/*
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** Licensed under the GPL v2, see the file LICENSE in this tarball
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**
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** Based on nanotop.c from floppyfw project
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**
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** Contact me: vda.linux@googlemail.com */
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//TODO:
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// simplify code
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// /proc/locks
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// /proc/stat:
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// disk_io: (3,0):(22272,17897,410702,4375,54750)
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// btime 1059401962
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#include "busybox.h"
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#include <time.h>
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typedef unsigned long long ullong;
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typedef unsigned long ulong;
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enum { proc_file_size = 4096 };
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typedef struct proc_file {
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char *name;
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int gen;
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char *file;
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} proc_file;
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static proc_file proc_stat = { "/proc/stat", -1 };
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static proc_file proc_loadavg = { "/proc/loadavg", -1 };
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static proc_file proc_net_dev = { "/proc/net/dev", -1 };
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static proc_file proc_meminfo = { "/proc/meminfo", -1 };
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static proc_file proc_diskstats = { "/proc/diskstats", -1 };
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// Sample #
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static int gen = -1;
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// Linux 2.6? (otherwise assumes 2.4)
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static int is26 = 0;
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static struct timeval tv;
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static int delta = 1000000;
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static int deltanz = 1000000;
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static int need_seconds = 0;
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static char *final_str = "\n";
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// We depend on this being a char[], not char* - we take sizeof() of it
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#define outbuf bb_common_bufsiz1
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static char *cur_outbuf = outbuf;
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static inline void reset_outbuf(void)
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{
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cur_outbuf = outbuf;
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}
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static inline int outbuf_count(void)
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{
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return cur_outbuf - outbuf;
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}
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static void print_outbuf(void)
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{
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int sz = cur_outbuf - outbuf;
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if (sz > 0) {
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write(1, outbuf, sz);
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cur_outbuf = outbuf;
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}
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}
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static void put(const char *s)
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{
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int sz = strlen(s);
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if (sz > outbuf + sizeof(outbuf) - cur_outbuf)
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sz = outbuf + sizeof(outbuf) - cur_outbuf;
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memcpy(cur_outbuf, s, sz);
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cur_outbuf += sz;
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}
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static void put_c(char c)
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{
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if (cur_outbuf < outbuf + sizeof(outbuf))
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*cur_outbuf++ = c;
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}
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static void put_question_marks(int count)
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{
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while (count--)
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put_c('?');
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}
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static int readfile_z(char *buf, int sz, const char* fname)
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{
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int fd;
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fd = xopen(fname, O_RDONLY);
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// We are not checking for short reads (valid only because
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// we are reading /proc files)
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sz = read(fd, buf, sz-1);
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close(fd);
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if (sz < 0) {
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buf[0] = '\0';
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return 1;
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}
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buf[sz] = '\0';
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return 0;
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}
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static const char* get_file(proc_file *pf)
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{
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if (pf->gen != gen) {
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pf->gen = gen;
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// We allocate proc_file_size bytes. This wastes memory,
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// but allows us to allocate only once (at first sample)
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// per proc file, and reuse buffer for each sample
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if (!pf->file)
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pf->file = (char*)xmalloc(proc_file_size);
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readfile_z(pf->file, proc_file_size, pf->name);
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}
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return pf->file;
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}
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static inline ullong read_after_slash(const char *p)
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{
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p = strchr(p, '/');
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if (!p) return 0;
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return strtoull(p+1, NULL, 10);
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}
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enum conv_type { conv_decimal, conv_slash };
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// Reads decimal values from line. Values start after key, for example:
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// "cpu 649369 0 341297 4336769..." - key is "cpu" here.
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// Values are stored in vec[]. arg_ptr has list of positions
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// we are interested in: for example: 1,2,5 - we want 1st, 2nd and 5th value.
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static int vrdval(const char* p, const char* key,
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enum conv_type conv, ullong *vec, va_list arg_ptr)
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{
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int indexline;
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int indexnext;
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p = strstr(p, key);
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if (!p) return 1;
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p += strlen(key);
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indexline = 1;
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indexnext = va_arg(arg_ptr, int);
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while (1) {
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while (*p == ' ' || *p == '\t') p++;
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if (*p == '\n' || *p == '\0') break;
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if (indexline == indexnext) { // read this value
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*vec++ = conv==conv_decimal ?
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strtoull(p, NULL, 10) :
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read_after_slash(p);
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indexnext = va_arg(arg_ptr, int);
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}
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while (*p > ' ') p++; // skip over value
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indexline++;
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}
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return 0;
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}
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// Parses files with lines like "cpu0 21727 0 15718 1813856 9461 10485 0 0":
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// rdval(file_contents, "string_to_find", result_vector, value#, value#...)
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// value# start with 1
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static int rdval(const char* p, const char* key, ullong *vec, ...)
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{
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va_list arg_ptr;
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int result;
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va_start(arg_ptr, vec);
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result = vrdval(p, key, conv_decimal, vec, arg_ptr);
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va_end(arg_ptr);
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return result;
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}
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// Parses files with lines like "... ... ... 3/148 ...."
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static int rdval_loadavg(const char* p, ullong *vec, ...)
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{
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va_list arg_ptr;
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int result;
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va_start(arg_ptr, vec);
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result = vrdval(p, "", conv_slash, vec, arg_ptr);
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va_end(arg_ptr);
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return result;
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}
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// Parses /proc/diskstats
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// 1 2 3 4 5 6(rd) 7 8 9 10(wr) 11 12 13 14
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// 3 0 hda 51292 14441 841783 926052 25717 79650 843256 3029804 0 148459 3956933
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// 3 1 hda1 0 0 0 0 <- ignore if only 4 fields
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static int rdval_diskstats(const char* p, ullong *vec)
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{
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ullong rd = 0; // to avoid "warning: 'rd' might be used uninitialized"
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int indexline = 0;
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vec[0] = 0;
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vec[1] = 0;
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while (1) {
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indexline++;
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while (*p == ' ' || *p == '\t') p++;
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if (*p == '\0') break;
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if (*p == '\n') {
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indexline = 0;
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p++;
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continue;
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}
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if (indexline == 6) {
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rd = strtoull(p, NULL, 10);
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} else if (indexline == 10) {
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vec[0] += rd; // TODO: *sectorsize (don't know how to find out sectorsize)
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vec[1] += strtoull(p, NULL, 10);
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while (*p != '\n' && *p != '\0') p++;
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continue;
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}
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while (*p > ' ') p++; // skip over value
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}
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return 0;
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}
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static void scale(ullong ul)
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{
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char *fmt;
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char buf[5];
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char c;
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unsigned v,idx = 0;
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ul *= 10;
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if (ul > 9999*10) { // do not scale if 9999 or less
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while (ul >= 10000) {
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ul /= 1024;
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idx++;
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}
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}
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v = ul; // ullong divisions are expensive, avoid them
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fmt = " 123456789";
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if (!idx) { // 9999 or less: use 1234 format
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c = buf[0] = " 123456789"[v/10000];
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if (c!=' ') fmt = "0123456789";
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c = buf[1] = fmt[v/1000%10];
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if (c!=' ') fmt = "0123456789";
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buf[2] = fmt[v/100%10];
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buf[3] = "0123456789"[v/10%10];
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} else {
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if (v>=10*10) { // scaled value is >=10: use 123M format
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c = buf[0] = " 123456789"[v/1000];
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if (c!=' ') fmt = "0123456789";
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buf[1] = fmt[v/100%10];
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buf[2] = "0123456789"[v/10%10];
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} else { // scaled value is <10: use 1.2M format
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buf[0] = "0123456789"[v/10];
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buf[1] = '.';
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buf[2] = "0123456789"[v%10];
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}
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// see http://en.wikipedia.org/wiki/Tera
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buf[3] = " kMGTPEZY"[idx];
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}
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buf[4] = '\0';
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put(buf);
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}
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#define S_STAT(a) \
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typedef struct a { \
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struct s_stat *next; \
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void (*collect)(struct a *s); \
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const char *label;
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#define S_STAT_END(a) } a;
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S_STAT(s_stat)
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S_STAT_END(s_stat)
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static void collect_literal(s_stat *s)
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{
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}
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static s_stat* init_literal(void)
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{
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s_stat *s = xmalloc(sizeof(s_stat));
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s->collect = collect_literal;
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return (s_stat*)s;
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}
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static s_stat* init_delay(const char *param)
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{
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delta = strtol(param, NULL, 0)*1000;
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deltanz = delta > 0 ? delta : 1;
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need_seconds = (1000000%deltanz) != 0;
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return (s_stat*)0;
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}
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static s_stat* init_cr(const char *param)
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{
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final_str = "\r";
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return (s_stat*)0;
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}
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// user nice system idle iowait irq softirq (last 3 only in 2.6)
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//cpu 649369 0 341297 4336769 11640 7122 1183
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//cpuN 649369 0 341297 4336769 11640 7122 1183
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enum { CPU_FIELDCNT = 7 };
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S_STAT(cpu_stat)
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ullong old[CPU_FIELDCNT];
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int bar_sz;
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char *bar;
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S_STAT_END(cpu_stat)
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static void collect_cpu(cpu_stat *s)
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{
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ullong data[CPU_FIELDCNT] = { 0, 0, 0, 0, 0, 0, 0 };
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unsigned frac[CPU_FIELDCNT] = { 0, 0, 0, 0, 0, 0, 0 };
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ullong all = 0;
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int norm_all = 0;
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int bar_sz = s->bar_sz;
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char *bar = s->bar;
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int i;
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if (rdval(get_file(&proc_stat), "cpu ", data, 1, 2, 3, 4, 5, 6, 7)) {
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put_question_marks(bar_sz);
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return;
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}
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for (i=0; i<CPU_FIELDCNT; i++) {
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ullong old = s->old[i];
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if (data[i] < old) old = data[i]; //sanitize
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s->old[i] = data[i];
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all += (data[i] -= old);
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}
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if (all) {
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for (i=0; i<CPU_FIELDCNT; i++) {
|
||||
ullong t = bar_sz * data[i];
|
||||
norm_all += data[i] = t / all;
|
||||
frac[i] = t % all;
|
||||
}
|
||||
|
||||
while (norm_all < bar_sz) {
|
||||
unsigned max = frac[0];
|
||||
int pos = 0;
|
||||
for (i=1; i<CPU_FIELDCNT; i++) {
|
||||
if (frac[i] > max) max = frac[i], pos = i;
|
||||
}
|
||||
frac[pos] = 0; //avoid bumping up same value twice
|
||||
data[pos]++;
|
||||
norm_all++;
|
||||
}
|
||||
|
||||
memset(bar, '.', bar_sz);
|
||||
memset(bar, 'S', data[2]); bar += data[2]; //sys
|
||||
memset(bar, 'U', data[0]); bar += data[0]; //usr
|
||||
memset(bar, 'N', data[1]); bar += data[1]; //nice
|
||||
memset(bar, 'D', data[4]); bar += data[4]; //iowait
|
||||
memset(bar, 'I', data[5]); bar += data[5]; //irq
|
||||
memset(bar, 'i', data[6]); bar += data[6]; //softirq
|
||||
} else {
|
||||
memset(bar, '?', bar_sz);
|
||||
}
|
||||
put(s->bar);
|
||||
}
|
||||
|
||||
|
||||
static s_stat* init_cpu(const char *param)
|
||||
{
|
||||
int sz;
|
||||
cpu_stat *s = xmalloc(sizeof(cpu_stat));
|
||||
s->collect = collect_cpu;
|
||||
sz = strtol(param, NULL, 0);
|
||||
if (sz < 10) sz = 10;
|
||||
if (sz > 1000) sz = 1000;
|
||||
s->bar = xmalloc(sz+1);
|
||||
s->bar[sz] = '\0';
|
||||
s->bar_sz = sz;
|
||||
return (s_stat*)s;
|
||||
}
|
||||
|
||||
|
||||
S_STAT(int_stat)
|
||||
ullong old;
|
||||
int no;
|
||||
S_STAT_END(int_stat)
|
||||
|
||||
static void collect_int(int_stat *s)
|
||||
{
|
||||
ullong data[1];
|
||||
ullong old;
|
||||
|
||||
if (rdval(get_file(&proc_stat), "intr", data, s->no)) {
|
||||
put_question_marks(4);
|
||||
return;
|
||||
}
|
||||
|
||||
old = s->old;
|
||||
if (data[0] < old) old = data[0]; //sanitize
|
||||
s->old = data[0];
|
||||
scale(data[0] - old);
|
||||
}
|
||||
|
||||
static s_stat* init_int(const char *param)
|
||||
{
|
||||
int_stat *s = xmalloc(sizeof(int_stat));
|
||||
s->collect = collect_int;
|
||||
if (param[0]=='\0') {
|
||||
s->no = 1;
|
||||
} else {
|
||||
int n = strtoul(param, NULL, 0);
|
||||
s->no = n+2;
|
||||
}
|
||||
return (s_stat*)s;
|
||||
}
|
||||
|
||||
|
||||
S_STAT(ctx_stat)
|
||||
ullong old;
|
||||
S_STAT_END(ctx_stat)
|
||||
|
||||
static void collect_ctx(ctx_stat *s)
|
||||
{
|
||||
ullong data[1];
|
||||
ullong old;
|
||||
|
||||
if (rdval(get_file(&proc_stat), "ctxt", data, 1)) {
|
||||
put_question_marks(4);
|
||||
return;
|
||||
}
|
||||
|
||||
old = s->old;
|
||||
if (data[0] < old) old = data[0]; //sanitize
|
||||
s->old = data[0];
|
||||
scale(data[0] - old);
|
||||
}
|
||||
|
||||
static s_stat* init_ctx(const char *param)
|
||||
{
|
||||
ctx_stat *s = xmalloc(sizeof(ctx_stat));
|
||||
s->collect = collect_ctx;
|
||||
return (s_stat*)s;
|
||||
}
|
||||
|
||||
|
||||
S_STAT(blk_stat)
|
||||
const char* lookfor;
|
||||
ullong old[2];
|
||||
S_STAT_END(blk_stat)
|
||||
|
||||
static void collect_blk(blk_stat *s)
|
||||
{
|
||||
ullong data[2];
|
||||
int i;
|
||||
|
||||
if (is26) {
|
||||
i = rdval_diskstats(get_file(&proc_diskstats), data);
|
||||
} else {
|
||||
i = rdval(get_file(&proc_stat), s->lookfor, data, 1, 2);
|
||||
// Linux 2.4 reports bio in Kbytes, convert to sectors:
|
||||
data[0] *= 2;
|
||||
data[1] *= 2;
|
||||
}
|
||||
if (i) {
|
||||
put_question_marks(9);
|
||||
return;
|
||||
}
|
||||
|
||||
for (i=0; i<2; i++) {
|
||||
ullong old = s->old[i];
|
||||
if (data[i] < old) old = data[i]; //sanitize
|
||||
s->old[i] = data[i];
|
||||
data[i] -= old;
|
||||
}
|
||||
scale(data[0]*512); // TODO: *sectorsize
|
||||
put_c(' ');
|
||||
scale(data[1]*512);
|
||||
}
|
||||
|
||||
static s_stat* init_blk(const char *param)
|
||||
{
|
||||
blk_stat *s = xmalloc(sizeof(blk_stat));
|
||||
s->collect = collect_blk;
|
||||
s->lookfor = "page";
|
||||
return (s_stat*)s;
|
||||
}
|
||||
|
||||
|
||||
S_STAT(fork_stat)
|
||||
ullong old;
|
||||
S_STAT_END(fork_stat)
|
||||
|
||||
static void collect_thread_nr(fork_stat *s)
|
||||
{
|
||||
ullong data[1];
|
||||
|
||||
if (rdval_loadavg(get_file(&proc_loadavg), data, 4)) {
|
||||
put_question_marks(4);
|
||||
return;
|
||||
}
|
||||
scale(data[0]);
|
||||
}
|
||||
|
||||
static void collect_fork(fork_stat *s)
|
||||
{
|
||||
ullong data[1];
|
||||
ullong old;
|
||||
|
||||
if (rdval(get_file(&proc_stat), "processes", data, 1)) {
|
||||
put_question_marks(4);
|
||||
return;
|
||||
}
|
||||
|
||||
old = s->old;
|
||||
if (data[0] < old) old = data[0]; //sanitize
|
||||
s->old = data[0];
|
||||
scale(data[0] - old);
|
||||
}
|
||||
|
||||
static s_stat* init_fork(const char *param)
|
||||
{
|
||||
fork_stat *s = xmalloc(sizeof(fork_stat));
|
||||
if (*param == 'n') {
|
||||
s->collect = collect_thread_nr;
|
||||
} else {
|
||||
s->collect = collect_fork;
|
||||
}
|
||||
return (s_stat*)s;
|
||||
}
|
||||
|
||||
|
||||
S_STAT(if_stat)
|
||||
ullong old[4];
|
||||
const char *device;
|
||||
char *device_colon;
|
||||
S_STAT_END(if_stat)
|
||||
|
||||
static void collect_if(if_stat *s)
|
||||
{
|
||||
ullong data[4];
|
||||
int i;
|
||||
|
||||
if (rdval(get_file(&proc_net_dev), s->device_colon, data, 1, 3, 9, 11)) {
|
||||
put_question_marks(10);
|
||||
return;
|
||||
}
|
||||
|
||||
for (i=0; i<4; i++) {
|
||||
ullong old = s->old[i];
|
||||
if (data[i] < old) old = data[i]; //sanitize
|
||||
s->old[i] = data[i];
|
||||
data[i] -= old;
|
||||
}
|
||||
put_c(data[1] ? '*' : ' ');
|
||||
scale(data[0]);
|
||||
put_c(data[3] ? '*' : ' ');
|
||||
scale(data[2]);
|
||||
}
|
||||
|
||||
static s_stat* init_if(const char *device)
|
||||
{
|
||||
if_stat *s = xmalloc(sizeof(if_stat));
|
||||
|
||||
if (!device || !device[0])
|
||||
bb_show_usage();
|
||||
s->collect = collect_if;
|
||||
|
||||
s->device = device;
|
||||
s->device_colon = xmalloc(strlen(device)+2);
|
||||
strcpy(s->device_colon, device);
|
||||
strcat(s->device_colon, ":");
|
||||
return (s_stat*)s;
|
||||
}
|
||||
|
||||
|
||||
S_STAT(mem_stat)
|
||||
char opt;
|
||||
S_STAT_END(mem_stat)
|
||||
|
||||
// "Memory" value should not include any caches.
|
||||
// IOW: neither "ls -laR /" nor heavy read/write activity
|
||||
// should affect it. We'd like to also include any
|
||||
// long-term allocated kernel-side mem, but it is hard
|
||||
// to figure out. For now, bufs, cached & slab are
|
||||
// counted as "free" memory
|
||||
//2.6.16:
|
||||
//MemTotal: 773280 kB
|
||||
//MemFree: 25912 kB - genuinely free
|
||||
//Buffers: 320672 kB - cache
|
||||
//Cached: 146396 kB - cache
|
||||
//SwapCached: 0 kB
|
||||
//Active: 183064 kB
|
||||
//Inactive: 356892 kB
|
||||
//HighTotal: 0 kB
|
||||
//HighFree: 0 kB
|
||||
//LowTotal: 773280 kB
|
||||
//LowFree: 25912 kB
|
||||
//SwapTotal: 131064 kB
|
||||
//SwapFree: 131064 kB
|
||||
//Dirty: 48 kB
|
||||
//Writeback: 0 kB
|
||||
//Mapped: 96620 kB
|
||||
//Slab: 200668 kB - takes 7 Mb on my box fresh after boot,
|
||||
// but includes dentries and inodes
|
||||
// (== can take arbitrary amount of mem)
|
||||
//CommitLimit: 517704 kB
|
||||
//Committed_AS: 236776 kB
|
||||
//PageTables: 1248 kB
|
||||
//VmallocTotal: 516052 kB
|
||||
//VmallocUsed: 3852 kB
|
||||
//VmallocChunk: 512096 kB
|
||||
//HugePages_Total: 0
|
||||
//HugePages_Free: 0
|
||||
//Hugepagesize: 4096 kB
|
||||
static void collect_mem(mem_stat *s)
|
||||
{
|
||||
ullong m_total = 0;
|
||||
ullong m_free = 0;
|
||||
ullong m_bufs = 0;
|
||||
ullong m_cached = 0;
|
||||
ullong m_slab = 0;
|
||||
|
||||
if (rdval(get_file(&proc_meminfo), "MemTotal:", &m_total, 1)) {
|
||||
put_question_marks(4);
|
||||
return;
|
||||
}
|
||||
if (s->opt == 'f') {
|
||||
scale(m_total << 10);
|
||||
return;
|
||||
}
|
||||
|
||||
if (rdval(proc_meminfo.file, "MemFree:", &m_free , 1)
|
||||
|| rdval(proc_meminfo.file, "Buffers:", &m_bufs , 1)
|
||||
|| rdval(proc_meminfo.file, "Cached:", &m_cached, 1)
|
||||
|| rdval(proc_meminfo.file, "Slab:", &m_slab , 1)
|
||||
) {
|
||||
put_question_marks(4);
|
||||
return;
|
||||
}
|
||||
|
||||
m_free += m_bufs + m_cached + m_slab;
|
||||
switch(s->opt) {
|
||||
case 'f':
|
||||
scale(m_free << 10); break;
|
||||
default:
|
||||
scale((m_total - m_free) << 10); break;
|
||||
}
|
||||
}
|
||||
|
||||
static s_stat* init_mem(const char *param)
|
||||
{
|
||||
mem_stat *s = xmalloc(sizeof(mem_stat));
|
||||
s->collect = collect_mem;
|
||||
s->opt = param[0];
|
||||
return (s_stat*)s;
|
||||
}
|
||||
|
||||
|
||||
S_STAT(swp_stat)
|
||||
S_STAT_END(swp_stat)
|
||||
|
||||
static void collect_swp(swp_stat *s)
|
||||
{
|
||||
ullong s_total[1];
|
||||
ullong s_free[1];
|
||||
if (rdval(get_file(&proc_meminfo), "SwapTotal:", s_total, 1)
|
||||
|| rdval(proc_meminfo.file, "SwapFree:" , s_free, 1)
|
||||
) {
|
||||
put_question_marks(4);
|
||||
return;
|
||||
}
|
||||
scale((s_total[0]-s_free[0]) << 10);
|
||||
}
|
||||
|
||||
static s_stat* init_swp(const char *param)
|
||||
{
|
||||
swp_stat *s = xmalloc(sizeof(swp_stat));
|
||||
s->collect = collect_swp;
|
||||
return (s_stat*)s;
|
||||
}
|
||||
|
||||
|
||||
S_STAT(fd_stat)
|
||||
S_STAT_END(fd_stat)
|
||||
|
||||
static void collect_fd(fd_stat *s)
|
||||
{
|
||||
char file[4096];
|
||||
ullong data[2];
|
||||
|
||||
readfile_z(file, sizeof(file), "/proc/sys/fs/file-nr");
|
||||
if (rdval(file, "", data, 1, 2)) {
|
||||
put_question_marks(4);
|
||||
return;
|
||||
}
|
||||
|
||||
scale(data[0] - data[1]);
|
||||
}
|
||||
|
||||
static s_stat* init_fd(const char *param)
|
||||
{
|
||||
fd_stat *s = xmalloc(sizeof(fd_stat));
|
||||
s->collect = collect_fd;
|
||||
return (s_stat*)s;
|
||||
}
|
||||
|
||||
|
||||
S_STAT(time_stat)
|
||||
int prec;
|
||||
int scale;
|
||||
S_STAT_END(time_stat)
|
||||
|
||||
static void collect_time(time_stat *s)
|
||||
{
|
||||
char buf[sizeof("12:34:56.123456")];
|
||||
struct tm* tm;
|
||||
int us = tv.tv_usec + s->scale/2;
|
||||
time_t t = tv.tv_sec;
|
||||
|
||||
if (us >= 1000000) {
|
||||
t++;
|
||||
us -= 1000000;
|
||||
}
|
||||
tm = localtime(&t);
|
||||
|
||||
sprintf(buf, "%02d:%02d:%02d", tm->tm_hour, tm->tm_min, tm->tm_sec);
|
||||
if (s->prec)
|
||||
sprintf(buf+8, ".%0*d", s->prec, us / s->scale);
|
||||
put(buf);
|
||||
}
|
||||
|
||||
static s_stat* init_time(const char *param)
|
||||
{
|
||||
int prec;
|
||||
time_stat *s = xmalloc(sizeof(time_stat));
|
||||
|
||||
s->collect = collect_time;
|
||||
prec = param[0]-'0';
|
||||
if (prec < 0) prec = 0;
|
||||
else if (prec > 6) prec = 6;
|
||||
s->prec = prec;
|
||||
s->scale = 1;
|
||||
while (prec++ < 6)
|
||||
s->scale *= 10;
|
||||
return (s_stat*)s;
|
||||
}
|
||||
|
||||
static void collect_info(s_stat *s)
|
||||
{
|
||||
gen++;
|
||||
while (s) {
|
||||
put(s->label);
|
||||
s->collect(s);
|
||||
s = s->next;
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
typedef s_stat* init_func(const char *param);
|
||||
|
||||
static const char options[] = "ncmsfixptbdr";
|
||||
static init_func* init_functions[] = {
|
||||
init_if,
|
||||
init_cpu,
|
||||
init_mem,
|
||||
init_swp,
|
||||
init_fd,
|
||||
init_int,
|
||||
init_ctx,
|
||||
init_fork,
|
||||
init_time,
|
||||
init_blk,
|
||||
init_delay,
|
||||
init_cr,
|
||||
};
|
||||
|
||||
int nmeter_main(int argc, char* argv[])
|
||||
{
|
||||
char buf[32];
|
||||
s_stat *first = NULL;
|
||||
s_stat *last = NULL;
|
||||
s_stat *s;
|
||||
char *cur, *prev;
|
||||
int fd;
|
||||
|
||||
if (argc != 2)
|
||||
bb_show_usage();
|
||||
|
||||
fd = xopen("/proc/version", O_RDONLY);
|
||||
if (read(fd, buf, sizeof(buf)) > 0)
|
||||
is26 = (strstr(buf, "Linux version 2.4.")==NULL);
|
||||
close(fd);
|
||||
|
||||
// Can use argv[1] directly, but this will mess up
|
||||
// parameters as seen by e.g. ps. Making a copy...
|
||||
cur = xstrdup(argv[1]);
|
||||
while (1) {
|
||||
char *param, *p;
|
||||
prev = cur;
|
||||
again:
|
||||
cur = strchr(cur, '%');
|
||||
if (!cur)
|
||||
break;
|
||||
if (cur[1]=='%') { // %%
|
||||
strcpy(cur, cur+1);
|
||||
cur++;
|
||||
goto again;
|
||||
}
|
||||
*cur++ = '\0'; // overwrite %
|
||||
if (cur[0] == '[') {
|
||||
// format: %[foptstring]
|
||||
cur++;
|
||||
p = strchr(options, cur[0]);
|
||||
param = cur+1;
|
||||
while (cur[0] != ']') {
|
||||
if (!cur[0])
|
||||
bb_show_usage();
|
||||
cur++;
|
||||
}
|
||||
*cur++ = '\0'; // overwrite [
|
||||
} else {
|
||||
// format: %NNNNNNf
|
||||
param = cur;
|
||||
while (cur[0] >= '0' && cur[0] <= '9')
|
||||
cur++;
|
||||
if (!cur[0])
|
||||
bb_show_usage();
|
||||
p = strchr(options, cur[0]);
|
||||
*cur++ = '\0'; // overwrite format char
|
||||
}
|
||||
if (!p)
|
||||
bb_show_usage();
|
||||
s = init_functions[p-options](param);
|
||||
if (s) {
|
||||
s->label = prev;
|
||||
s->next = 0;
|
||||
if (!first)
|
||||
first = s;
|
||||
else
|
||||
last->next = s;
|
||||
last = s;
|
||||
} else {
|
||||
// %NNNNd or %r option. remove it from string
|
||||
strcpy(prev + strlen(prev), cur);
|
||||
cur = prev;
|
||||
}
|
||||
}
|
||||
if (prev[0]) {
|
||||
s = init_literal();
|
||||
s->label = prev;
|
||||
s->next = 0;
|
||||
if (!first)
|
||||
first = s;
|
||||
else
|
||||
last->next = s;
|
||||
last = s;
|
||||
}
|
||||
|
||||
// Generate first samples but do not print them, they're bogus
|
||||
collect_info(first);
|
||||
reset_outbuf();
|
||||
if (delta >= 0) {
|
||||
gettimeofday(&tv, 0);
|
||||
usleep(delta > 1000000 ? 1000000 : delta - tv.tv_usec%deltanz);
|
||||
}
|
||||
|
||||
while (1) {
|
||||
gettimeofday(&tv, 0);
|
||||
collect_info(first);
|
||||
put(final_str);
|
||||
print_outbuf();
|
||||
|
||||
// Negative delta -> no usleep at all
|
||||
// This will hog the CPU but you can have REALLY GOOD
|
||||
// time resolution ;)
|
||||
// TODO: detect and avoid useless updates
|
||||
// (like: nothing happens except time)
|
||||
if (delta >= 0) {
|
||||
int rem;
|
||||
// can be commented out, will sacrifice sleep time precision a bit
|
||||
gettimeofday(&tv, 0);
|
||||
if (need_seconds)
|
||||
rem = delta - ((ullong)tv.tv_sec*1000000+tv.tv_usec)%deltanz;
|
||||
else
|
||||
rem = delta - tv.tv_usec%deltanz;
|
||||
// Sometimes kernel wakes us up just a tiny bit earlier than asked
|
||||
// Do not go to very short sleep in this case
|
||||
if (rem < delta/128) {
|
||||
rem += delta;
|
||||
}
|
||||
usleep(rem);
|
||||
}
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
Loading…
Reference in New Issue
Block a user