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Florian Unglaub
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Mar 28, 2012
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,137 @@ | ||
| #include <stdio.h> | ||
| #include <stdlib.h> | ||
| #include <string.h> | ||
| #include <errno.h> | ||
| #include <sys/types.h> | ||
| #include <sys/sysctl.h> | ||
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| #include "util.h" | ||
| #include "machine.h" | ||
| #include "proc.h" | ||
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| // Process states - short form | ||
| // SIDL 1 /* Process being created by fork. */ | ||
| // SRUN 2 /* Currently runnable. */ | ||
| // SSLEEP 3 /* Sleeping on an address. */ | ||
| // SSTOP 4 /* Process debugging or suspension. */ | ||
| // SZOMB 5 /* Awaiting collection by parent. */ | ||
| // SWAIT 6 /* Waiting for interrupt. */ | ||
| // SLOCK 7 /* Blocked on a lock. */ | ||
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| // Take from top(8) | ||
| const char *state_abbrev[] = { | ||
| "", "START", "RUN\0\0\0", "SLEEP", "STOP", "ZOMB", "WAIT", "LOCK" | ||
| }; | ||
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| /* these are for detailing the memory statistics */ | ||
| char *memorynames[] = { | ||
| "Active, ", "Inact, ", "Wired, ", "Cache, ", "Buf, ", | ||
| "Free", NULL | ||
| }; | ||
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| void init_machine(struct procstat *pst) | ||
| { | ||
| extern int pageshift; // defined in machine.h | ||
| int mib[2], pagesize; | ||
| struct timeval boottime; | ||
| size_t bt_size; | ||
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| /* get the page size and calculate pageshift from it */ | ||
| pagesize = getpagesize(); | ||
| pageshift = 0; | ||
| while (pagesize > 1) { | ||
| pageshift++; | ||
| pagesize >>= 1; | ||
| } | ||
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| /* we only need the amount of log(2)1024 for our conversion */ | ||
| pageshift -= LOG1024; | ||
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| // TODO: do this only once, not continously | ||
| // Get the boottime from the kernel to calculate uptime | ||
| mib[0] = CTL_KERN; | ||
| mib[1] = KERN_BOOTTIME; | ||
| bt_size = sizeof(boottime); | ||
| if (sysctl(mib, 2, &boottime, &bt_size, NULL, 0) != -1 && | ||
| boottime.tv_sec != 0) { | ||
| pst->boottime = boottime; | ||
| } else { | ||
| pst->boottime.tv_sec = -1; | ||
| } | ||
| } | ||
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| const char *uptime_from_boottime(time_t boottime) | ||
| { | ||
| static char buf[64]; // Should be sufficient | ||
| time_t now; | ||
| struct tm *ltime; | ||
| unsigned long int diff_secs; // The difference between now and the epoch | ||
| unsigned long int rest; | ||
| unsigned int days, hours, minutes, seconds; | ||
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| time(&now); | ||
| ltime = localtime(&now); | ||
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| diff_secs = now-boottime; | ||
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| days = diff_secs/86400; | ||
| rest = diff_secs % 86400; | ||
| hours = rest / 3600; | ||
| rest = rest % 3600; | ||
| minutes = rest/60; | ||
| rest = rest % 60; | ||
| seconds = (unsigned int)rest; | ||
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| snprintf(buf, sizeof buf, "up %d+%02d:%02d:%02d %02d:%02d:%02d", days, hours, minutes, seconds, ltime->tm_hour, ltime->tm_min, ltime->tm_sec); | ||
| return buf; | ||
| } | ||
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| const char* format_memory(int memory[6]) | ||
| { | ||
| int i, slen; | ||
| char prefix; | ||
| char buf[6][128]; | ||
| static char *memory_string; | ||
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| for(i=0; i<6; i++){ | ||
| int val = memory[i]; // default is KiloBytes | ||
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| if(val/1024/1024 > 1){ // display GigaBytes | ||
| prefix = 'G'; | ||
| val = val/(1024*1024); | ||
| } | ||
| else if(val/1024 > 1){ // display MegaBytes | ||
| prefix = 'M'; | ||
| val /= 1024; | ||
| } else { // KiloBytes | ||
| prefix = 'K'; | ||
| } | ||
| snprintf(buf[i], sizeof buf[i], "%d%c %s", val, prefix, memorynames[i]); | ||
| slen += strlen(buf[i]); | ||
| } | ||
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| memory_string = umalloc(slen+1); | ||
| for(i=0; i<6; i++){ | ||
| /* memory_string += sprintf(memory_string, "%s ", buf[i]); */ | ||
| memory_string = strncat(memory_string, buf[i], strlen(buf[i])); | ||
| } | ||
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| return memory_string; | ||
| } | ||
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| // Taken from top(8) | ||
| void getsysctl(const char *name, void *ptr, size_t len) | ||
| { | ||
| size_t nlen = len; | ||
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| if (sysctlbyname(name, ptr, &nlen, NULL, 0) == -1) { | ||
| fprintf(stderr, "top: sysctl(%s...) failed: %s\n", name, | ||
| strerror(errno)); | ||
| abort(); | ||
| } | ||
| if (nlen != len) { | ||
| fprintf(stderr, "top: sysctl(%s...) expected %lu, got %lu\n", | ||
| name, (unsigned long)len, (unsigned long)nlen); | ||
| abort(); | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,18 @@ | ||
| #ifndef _MACHINE_H_ | ||
| #define _MACHINE_H_ | ||
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| #include "proc.h" | ||
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| #define GETSYSCTL(name, var) getsysctl(name, &(var), sizeof(var)) | ||
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| int pageshift; | ||
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| /* define pagetok in terms of pageshift */ | ||
| #define LOG1024 10 // log_2(1024) | ||
| #define pagetok(size) ((size) << pageshift) | ||
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| void init_machine(struct procstat *pst); | ||
| const char *uptime_from_boottime(time_t boottime); | ||
| const char* format_memory(int memory[6]); | ||
| void getsysctl(const char *name, void *ptr, size_t len); | ||
| #endif /* _MACHINE_H_ */ |
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