75 lines
2.2 KiB
C
75 lines
2.2 KiB
C
#include <stddef.h>
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#include <stdint.h>
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#include <system/system.h>
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#include <sysdefs/processctl.h>
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#include <util/util.h>
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#include <errors.h>
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#include <uprintf.h>
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#include <string/string.h>
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#include <dlmalloc/malloc.h>
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const char *human_size(uint64_t bytes, char *buf, size_t bufsize) {
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static const char *units[] = { "B", "KiB", "MiB", "GiB", "TiB", "PiB" };
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int unit = 0;
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// Scale down until value fits nicely
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uint64_t rem = 0;
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while (bytes >= 1024 && unit < (int)(sizeof(units)/sizeof(units[0])) - 1) {
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rem = bytes % 1024;
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bytes /= 1024;
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unit++;
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}
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if (unit == 0) {
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// Just bytes
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usnprintf(buf, bufsize, "%llu %s", (unsigned long long)bytes, units[unit]);
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} else {
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// Show one decimal place without using floats
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// Multiply remainder by 10 to get first decimal digit
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uint64_t frac = (rem * 10 + 512) / 1024; // rounded
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if (frac == 10) { // handle carry, e.g. 1023.9 -> 1024.0
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bytes++;
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frac = 0;
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}
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if (frac > 0) usnprintf(buf, bufsize, "%llu.%llu %s", (unsigned long long)bytes, (unsigned long long)frac, units[unit]);
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else usnprintf(buf, bufsize, "%llu %s", (unsigned long long)bytes, units[unit]);
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}
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return buf;
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}
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void pctl_ls(void) {
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static const char *states[] = {"embryo", "ready", "zombie", "waiting", "died"};
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uint64_t procslen = processctl(-1, PCTL_PLS_SZ, 0, 0, 0);
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char *namebuf = dlmalloc(34);
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char *membuf = dlmalloc(20);
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uprintf("%-30s %s %-6s %-15s %-8s\n", "NAME", "PID", "TYPE", "MEMORY", "STATE");
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for (size_t i = 0; i < procslen; i++) {
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ProcStat stat = ZERO(&stat);
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string_memset(namebuf, 0, 34);
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string_memset(membuf, 0, 20);
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int32_t r = processctl(-1, PCTL_PLS_STAT, i, (uint64_t)&stat, 0);
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if (r == E_OK) {
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string_memcpy(namebuf, stat.name, 30);
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namebuf[31] = namebuf[32] = namebuf[33] = '.';
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// Too big format string causes a stack overflow. This is an issue with printf ;(
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uprintf("%-30s %-3lu %-6s %-15s ",
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namebuf,
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stat.pid,
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stat.kern ? "KERNEL" : "USER",
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human_size(stat.usemem, membuf, 20)
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);
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uprintf("%-8s", states[stat.state]);
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uprintf("\n");
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}
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}
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}
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