Add Linux support, fix whitespace
Read /proc/meminfo, pull out some numbers and use them.
This commit is contained in:
Christian Barthel
parent
a6e2ded980
commit
34c8e85e49
@ -1,2 +1,11 @@
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# xmem(1) X11 Utility
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# Compile
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```shell
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# Linux with DEBUG:
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CFLAGS=-DDEBUG make -f Makefile.linux
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# BSD:
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make
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```
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341
get_mem.c
341
get_mem.c
@ -13,7 +13,7 @@
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#if __OpenBSD__
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#include <sys/param.h> /* DEV_BSIZE MAXCOMLEN PZERO */
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#include <sys/param.h> /* DEV_BSIZE MAXCOMLEN PZERO */
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#include <sys/sysctl.h>
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#include <sys/swap.h>
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#include <sys/mount.h>
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@ -36,89 +36,89 @@ static double allmem_kb = 0;
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static void initPageShift(void)
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{
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int pagesize = getpagesize();
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pageshift = 0;
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while (pagesize > 1) {
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pageshift++;
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pagesize >>= 1;
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}
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pageshift -= LOG1024;
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int pagesize = getpagesize();
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pageshift = 0;
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while (pagesize > 1) {
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pageshift++;
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pagesize >>= 1;
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}
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pageshift -= LOG1024;
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}
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static double getSwapFrac()
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{
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struct swapent *swdev;
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int used, total, nswap, rnswap, i;
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struct swapent *swdev;
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int used, total, nswap, rnswap, i;
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nswap = swapctl(SWAP_NSWAP, 0, 0);
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if (nswap == 0)
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return 0;
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nswap = swapctl(SWAP_NSWAP, 0, 0);
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if (nswap == 0)
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return 0;
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swdev = calloc(nswap, sizeof(*swdev));
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if (swdev == NULL)
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return 0;
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swdev = calloc(nswap, sizeof(*swdev));
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if (swdev == NULL)
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return 0;
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rnswap = swapctl(SWAP_STATS, swdev, nswap);
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if (rnswap == -1) {
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free(swdev);
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return 0;
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}
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rnswap = swapctl(SWAP_STATS, swdev, nswap);
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if (rnswap == -1) {
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free(swdev);
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return 0;
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}
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/* if rnswap != nswap, then what? */
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/* if rnswap != nswap, then what? */
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/* Total things up */
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total = used = 0;
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for (i = 0; i < nswap; i++) {
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if (swdev[i].se_flags & SWF_ENABLE) {
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used += (swdev[i].se_inuse / (1024 / DEV_BSIZE));
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total += (swdev[i].se_nblks / (1024 / DEV_BSIZE));
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}
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}
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free(swdev);
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return (double)used/total;
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/* Total things up */
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total = used = 0;
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for (i = 0; i < nswap; i++) {
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if (swdev[i].se_flags & SWF_ENABLE) {
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used += (swdev[i].se_inuse / (1024 / DEV_BSIZE));
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total += (swdev[i].se_nblks / (1024 / DEV_BSIZE));
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}
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}
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free(swdev);
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return (double)used/total;
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}
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void GetMemLoadPoint(Widget w, caddr_t closure, caddr_t call_data)
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{
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static int bcstats_mib[] = {CTL_VFS, VFS_GENERIC, VFS_BCACHESTAT};
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static int uvmexp_mib[] = {CTL_VM, VM_UVMEXP};
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MemStripChartCallbackData ret;
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struct uvmexp uvmexp;
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struct bcachestats bcstats;
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size_t size;
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static int bcstats_mib[] = {CTL_VFS, VFS_GENERIC, VFS_BCACHESTAT};
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static int uvmexp_mib[] = {CTL_VM, VM_UVMEXP};
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MemStripChartCallbackData ret;
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struct uvmexp uvmexp;
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struct bcachestats bcstats;
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size_t size;
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if (pageshift < 0)
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initPageShift();
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if (pageshift < 0)
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initPageShift();
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size = sizeof(uvmexp);
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if (sysctl(uvmexp_mib, 2, &uvmexp, &size, NULL, 0) < 0) {
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warn("sysctl failed");
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bzero(&uvmexp, sizeof(uvmexp));
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}
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size = sizeof(bcstats);
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if (sysctl(bcstats_mib, 3, &bcstats, &size, NULL, 0) < 0) {
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warn("sysctl failed");
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bzero(&bcstats, sizeof(bcstats));
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}
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size = sizeof(uvmexp);
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if (sysctl(uvmexp_mib, 2, &uvmexp, &size, NULL, 0) < 0) {
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warn("sysctl failed");
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bzero(&uvmexp, sizeof(uvmexp));
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}
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size = sizeof(bcstats);
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if (sysctl(bcstats_mib, 3, &bcstats, &size, NULL, 0) < 0) {
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warn("sysctl failed");
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bzero(&bcstats, sizeof(bcstats));
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}
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allmem_kb = pagetok(uvmexp.npages);
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ret.cached = pagetok(bcstats.numbufpages) / allmem_kb;
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ret.free = pagetok(uvmexp.free) / allmem_kb;
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ret.buffer = 0;
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ret.code = (1 - ret.cached - ret.free);
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ret.swap = getSwapFrac();
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allmem_kb = pagetok(uvmexp.npages);
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ret.cached = pagetok(bcstats.numbufpages) / allmem_kb;
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ret.free = pagetok(uvmexp.free) / allmem_kb;
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ret.buffer = 0;
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ret.code = (1 - ret.cached - ret.free);
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ret.swap = getSwapFrac();
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#ifdef DEBUG
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printf("%lf %lf %lf %lf %lf\n",
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allmem_kb,
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ret.code,
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ret.cached,
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ret.free,
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ret.swap);
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printf("%lf %lf %lf %lf %lf\n",
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allmem_kb,
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ret.code,
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ret.cached,
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ret.free,
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ret.swap);
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#endif
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memcpy(call_data, &ret, sizeof(MemStripChartCallbackData));
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memcpy(call_data, &ret, sizeof(MemStripChartCallbackData));
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}
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#endif
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@ -133,7 +133,7 @@ void GetMemLoadPoint(Widget w, caddr_t closure, caddr_t call_data)
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*/
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#include <sys/types.h> /* DEV_BSIZE MAXCOMLEN PZERO */
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#include <sys/types.h> /* DEV_BSIZE MAXCOMLEN PZERO */
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#include <sys/sysctl.h>
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#include <unistd.h>
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@ -156,91 +156,194 @@ static unsigned int allmem_pages = 0;
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static void initPageShift(void)
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{
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pagesize = getpagesize();
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size_t len = sizeof(allmem_pages);
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int mib[len];
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pageshift = 0;
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while (pagesize > 1) {
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pageshift++;
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pagesize >>= 1;
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}
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pageshift -= LOG1024;
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pagesize = getpagesize();
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size_t len = sizeof(allmem_pages);
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int mib[len];
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pageshift = 0;
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while (pagesize > 1) {
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pageshift++;
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pagesize >>= 1;
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}
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pageshift -= LOG1024;
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kd = kvm_open(NULL, "/dev/null" ,NULL, O_RDONLY, "kvm_open");
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kd = kvm_open(NULL, "/dev/null" ,NULL, O_RDONLY, "kvm_open");
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if (sysctlbyname("vm.stats.vm.v_page_count", &allmem_pages, &len, NULL, 0) == -1)
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perror("sysctl");
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if (sysctlbyname("vm.stats.vm.v_page_count", &allmem_pages, &len, NULL, 0) == -1)
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perror("sysctl");
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#ifdef DEBUG
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printf("page_count: %d\n", allmem_pages);
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printf("page_count: %d\n", allmem_pages);
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#endif
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}
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static double getSwapFrac()
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{
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/* XXX Borrowed from top(1) code: */
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int n;
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struct kvm_swap swapary[1];
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static int pagesize = 0;
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static unsigned long swap_maxpages = 0;
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size_t sz = sizeof(swap_maxpages);
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/* XXX Borrowed from top(1) code: */
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int n;
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struct kvm_swap swapary[1];
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static int pagesize = 0;
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static unsigned long swap_maxpages = 0;
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size_t sz = sizeof(swap_maxpages);
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int retavail = 0;
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int retfree = 0;
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int retavail = 0;
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int retfree = 0;
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n = kvm_getswapinfo(kd, swapary, 1, 0);
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if (n < 0 || swapary[0].ksw_total == 0)
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return (0);
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n = kvm_getswapinfo(kd, swapary, 1, 0);
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if (n < 0 || swapary[0].ksw_total == 0)
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return (0);
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if (swap_maxpages == 0)
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sysctlbyname("vm.swap_maxpages",
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&swap_maxpages, &sz, NULL, 0);
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if (swap_maxpages == 0)
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sysctlbyname("vm.swap_maxpages",
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&swap_maxpages, &sz, NULL, 0);
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if ( swapary[0].ksw_total > swap_maxpages )
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swapary[0].ksw_total = swap_maxpages;
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if ( swapary[0].ksw_total > swap_maxpages )
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swapary[0].ksw_total = swap_maxpages;
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retavail = swapary[0].ksw_total;
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retfree = swapary[0].ksw_total - swapary[0].ksw_used;
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retavail = swapary[0].ksw_total;
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retfree = swapary[0].ksw_total - swapary[0].ksw_used;
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#ifdef DEBUG
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printf("swap: %d %d %d %d\n", retavail,
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retavail, swapary[0].ksw_total,
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swapary[0].ksw_used);
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printf("swap: %d %d %d %d\n", retavail,
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retavail, swapary[0].ksw_total,
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swapary[0].ksw_used);
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#endif
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return (double)(retavail-retfree)/(double)retavail;
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return (double)(retavail-retfree)/(double)retavail;
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}
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void GetMemLoadPoint(Widget w, caddr_t closure, caddr_t call_data)
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{
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MemStripChartCallbackData ret;
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int a, b;
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size_t sz = sizeof(int);
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double cache = 0;
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MemStripChartCallbackData ret;
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int a, b;
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size_t sz = sizeof(int);
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double cache = 0;
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if (pageshift < 0)
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initPageShift();
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if (pageshift < 0)
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initPageShift();
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sysctlbyname("vm.stats.vm.v_wire_count", &a, &sz, NULL, 0);
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ret.code = (double)a / (double)allmem_pages;
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sysctlbyname("vm.stats.vm.v_wire_count", &a, &sz, NULL, 0);
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ret.code = (double)a / (double)allmem_pages;
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sysctlbyname("vm.stats.vm.v_active_count", &a, &sz, NULL, 0);
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ret.buffer = (double)a / (double)allmem_pages;
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sysctlbyname("vm.stats.vm.v_active_count", &a, &sz, NULL, 0);
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ret.buffer = (double)a / (double)allmem_pages;
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/* v_cache_count and v_inactive_count are treated similarly */
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sysctlbyname("vm.stats.vm.v_inactive_count", &a, &sz, NULL, 0);
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sysctlbyname("vm.stats.vm.v_cache_count", &b, &sz, NULL, 0);
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ret.cached = (double)(a + b) / allmem_pages;
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/* v_cache_count and v_inactive_count are treated similarly */
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sysctlbyname("vm.stats.vm.v_inactive_count", &a, &sz, NULL, 0);
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sysctlbyname("vm.stats.vm.v_cache_count", &b, &sz, NULL, 0);
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ret.cached = (double)(a + b) / allmem_pages;
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sysctlbyname("vm.stats.vm.v_free_count", &a, &sz, NULL, 0);
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ret.free = (double)a / allmem_pages;
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ret.swap = getSwapFrac();
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sysctlbyname("vm.stats.vm.v_free_count", &a, &sz, NULL, 0);
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ret.free = (double)a / allmem_pages;
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ret.swap = getSwapFrac();
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#ifdef DEBUG
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printf("%u %lf %lf %lf %lf\n", allmem_pages,
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ret.code, ret.cached, ret.free, ret.swap);
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printf("%u %lf %lf %lf %lf\n", allmem_pages,
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ret.code, ret.cached, ret.free, ret.swap);
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#endif
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memcpy(call_data, &ret, sizeof(MemStripChartCallbackData));
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memcpy(call_data, &ret, sizeof(MemStripChartCallbackData));
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}
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#endif
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/* ------------------------------------------------------------------ */
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#if __gnu_linux__
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#include <X11/Xos.h>
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#include <X11/Intrinsic.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <err.h>
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#include "MemStripChart.h"
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static unsigned int total_mem = 0;
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int GetRamInKB(int type)
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{
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FILE *meminfo = fopen("/proc/meminfo", "r");
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if(meminfo == NULL)
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err(1, "fopen on /proc/meminfo failed: ");
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char line[256];
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int memory = -1;
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int found = 0;
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while(found == 0 && fgets(line, sizeof(line), meminfo))
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{
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if (type == 1) {
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if((sscanf(line, "MemTotal: %d kB", &memory)) == 1)
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found = 1;
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}
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if (type == 2) {
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if(sscanf(line, "MemFree: %d kB", &memory) == 1)
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found = 1;
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}
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if (type == 3) {
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if(sscanf(line, "Buffers: %d kB", &memory) == 1)
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found = 1;
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}
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if (type == 4) {
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if(sscanf(line, "Cached: %d kB", &memory) == 1)
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found = 1;
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}
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if (type == 5) {
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if(sscanf(line, "SwapTotal: %d kB", &memory) == 1)
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found = 1;
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}
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if (type == 6) {
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if(sscanf(line, "SwapFree: %d kB", &memory) == 1)
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found = 1;
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}
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}
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if (!found)
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warnx("failed to sscanf type %d", type);
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fclose(meminfo);
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return memory;
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}
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static void init_total_mem(void)
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{
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if (total_mem <= 0)
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total_mem = GetRamInKB(1);
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#ifdef DEBUG
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printf("MemTotal: %d\n", total_mem);
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#endif
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}
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void GetMemLoadPoint(Widget w, caddr_t closure, caddr_t call_data)
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{
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MemStripChartCallbackData ret;
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init_total_mem();
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/* free(1):
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* total
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* used = total - free - buffers - cache
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* /proc/meminfo
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* total = MemTotal
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* code = total - free - buffers - cache (“used”)
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* buffer = Buffers
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* cached = Cached
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* free = MemFree
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*/
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int mem_free = GetRamInKB(2);
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int buffers = GetRamInKB(3);
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int cached = GetRamInKB(4);
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int swap_total = GetRamInKB(5);
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int swap_free = GetRamInKB(6);
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ret.code = (total_mem - mem_free - buffers - cached)/(float)total_mem;
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ret.buffer = (buffers)/(float)total_mem;
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ret.cached = (cached)/(float)total_mem;
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ret.free = (mem_free)/(float)total_mem;
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ret.swap = (swap_total - swap_free)/(float)swap_total;
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#ifdef DEBUG
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printf("%u %lf %lf %lf %lf\n", total_mem,
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ret.code, ret.cached, ret.free, ret.swap);
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#endif
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memcpy(call_data, &ret, sizeof(MemStripChartCallbackData));
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}
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#endif
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