mirror of
https://github.com/jart/cosmopolitan.git
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Cull the examples folder
This commit is contained in:
Justine Tunney
parent
3a1f887928
commit
f7343319cc
44 changed files with 47 additions and 1963 deletions
23
tool/build/nproc.c
Normal file
23
tool/build/nproc.c
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@ -0,0 +1,23 @@
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#if 0
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/*─────────────────────────────────────────────────────────────────╗
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│ To the extent possible under law, Justine Tunney has waived │
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│ all copyright and related or neighboring rights to this file, │
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│ as it is written in the following disclaimers: │
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│ • http://unlicense.org/ │
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│ • http://creativecommons.org/publicdomain/zero/1.0/ │
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╚─────────────────────────────────────────────────────────────────*/
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#endif
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#include "libc/calls/calls.h"
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#include "libc/fmt/itoa.h"
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#include "libc/runtime/runtime.h"
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#include "libc/runtime/sysconf.h"
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#include "libc/stdio/sysparam.h"
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int main() {
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int nproc;
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char ibuf[12];
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nproc = __get_cpu_count();
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nproc = MAX(1, nproc);
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FormatInt32(ibuf, nproc);
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tinyprint(1, ibuf, "\n", NULL);
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}
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39
tool/build/reboot.c
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39
tool/build/reboot.c
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@ -0,0 +1,39 @@
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#if 0
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/*─────────────────────────────────────────────────────────────────╗
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│ To the extent possible under law, Justine Tunney has waived │
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│ all copyright and related or neighboring rights to this file, │
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│ as it is written in the following disclaimers: │
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│ • http://unlicense.org/ │
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│ • http://creativecommons.org/publicdomain/zero/1.0/ │
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╚─────────────────────────────────────────────────────────────────*/
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#endif
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#include "libc/calls/calls.h"
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#include "libc/runtime/runtime.h"
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#include "libc/stdio/stdio.h"
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#include "libc/str/str.h"
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#include "libc/sysv/consts/reboot.h"
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int main(int argc, char *argv[]) {
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char line[8] = {0};
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if (argc > 1 && !strcmp(argv[1], "-y")) {
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line[0] = 'y';
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} else {
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printf("reboot your computer? yes or no [no] ");
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fflush(stdout);
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fgets(line, sizeof(line), stdin);
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}
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if (line[0] == 'y' || line[0] == 'Y') {
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if (reboot(RB_AUTOBOOT)) {
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printf("system is rebooting...\n");
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exit(0);
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} else {
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perror("reboot");
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exit(1);
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}
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} else if (line[0] == 'n' || line[0] == 'N') {
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exit(0);
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} else {
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printf("error: unrecognized response\n");
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exit(2);
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}
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}
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39
tool/build/shutdown.c
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39
tool/build/shutdown.c
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@ -0,0 +1,39 @@
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#if 0
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/*─────────────────────────────────────────────────────────────────╗
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│ To the extent possible under law, Justine Tunney has waived │
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│ all copyright and related or neighboring rights to this file, │
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│ as it is written in the following disclaimers: │
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│ • http://unlicense.org/ │
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│ • http://creativecommons.org/publicdomain/zero/1.0/ │
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╚─────────────────────────────────────────────────────────────────*/
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#endif
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#include "libc/calls/calls.h"
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#include "libc/runtime/runtime.h"
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#include "libc/stdio/stdio.h"
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#include "libc/str/str.h"
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#include "libc/sysv/consts/reboot.h"
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int main(int argc, char *argv[]) {
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char line[8] = {0};
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if (argc > 1 && !strcmp(argv[1], "-y")) {
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line[0] = 'y';
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} else {
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printf("shutdown your computer? yes or no [no] ");
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fflush(stdout);
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fgets(line, sizeof(line), stdin);
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}
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if (line[0] == 'y' || line[0] == 'Y') {
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if (reboot(RB_POWER_OFF)) {
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printf("system is shutting down...\n");
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exit(0);
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} else {
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perror("reboot");
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exit(1);
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}
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} else if (line[0] == 'n' || line[0] == 'N') {
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exit(0);
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} else {
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printf("error: unrecognized response\n");
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exit(2);
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}
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}
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43
tool/viz/clock_accuracy.c
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43
tool/viz/clock_accuracy.c
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@ -0,0 +1,43 @@
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#if 0
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/*─────────────────────────────────────────────────────────────────╗
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│ To the extent possible under law, Justine Tunney has waived │
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│ all copyright and related or neighboring rights to this file, │
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│ as it is written in the following disclaimers: │
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│ • http://unlicense.org/ │
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│ • http://creativecommons.org/publicdomain/zero/1.0/ │
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╚─────────────────────────────────────────────────────────────────*/
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#endif
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#include "libc/calls/calls.h"
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#include "libc/calls/struct/timespec.h"
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#include "libc/runtime/runtime.h"
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#include "libc/stdio/stdio.h"
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/**
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* @fileoverview clock() function demo
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*/
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int main(int argc, char *argv[]) {
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ShowCrashReports();
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unsigned long i;
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volatile unsigned long x;
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struct timespec now, start, next, interval;
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printf("hammering the cpu...\n");
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next = start = timespec_mono();
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interval = timespec_frommillis(500);
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next = timespec_add(next, interval);
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for (;;) {
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for (i = 0;; ++i) {
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x *= 7;
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if (!(i % 256)) {
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now = timespec_mono();
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if (timespec_cmp(now, next) >= 0) {
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break;
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}
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}
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}
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next = timespec_add(next, interval);
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printf("consumed %10g seconds monotonic time and %10g seconds cpu time\n",
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timespec_tonanos(timespec_sub(now, start)) / 1000000000.,
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(double)clock() / CLOCKS_PER_SEC);
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}
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}
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63
tool/viz/datauri.c
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63
tool/viz/datauri.c
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@ -0,0 +1,63 @@
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#if 0
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/*─────────────────────────────────────────────────────────────────╗
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│ To the extent possible under law, Justine Tunney has waived │
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│ all copyright and related or neighboring rights to this file, │
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│ as it is written in the following disclaimers: │
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│ • http://unlicense.org/ │
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│ • http://creativecommons.org/publicdomain/zero/1.0/ │
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╚─────────────────────────────────────────────────────────────────*/
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#endif
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#include "libc/errno.h"
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#include "libc/log/log.h"
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#include "libc/mem/gc.internal.h"
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#include "libc/runtime/runtime.h"
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#include "libc/stdio/stdio.h"
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#include "libc/x/x.h"
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#include "net/http/escape.h"
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#include "net/http/http.h"
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#include "third_party/getopt/getopt.internal.h"
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#include "third_party/stb/stb_image.h"
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#define USAGE \
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" [FLAGS] FILE...\n\
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Utility for printing data:base64 URIs.\n\
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\n\
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FLAGS\n\
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\n\
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-h Help\n"
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void PrintUsage(int rc, FILE *f) {
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fputs("Usage: ", f);
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fputs(program_invocation_name, f);
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fputs(USAGE, f);
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exit(rc);
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}
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void PrintUri(const char *path) {
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size_t n;
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void *img;
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if (!(img = gc(xslurp(path, &n)))) exit(2);
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fputs("data:", stdout);
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fputs(FindContentType(path, -1), stdout);
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fputs(";base64,", stdout);
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fputs(gc(EncodeBase64(img, n, 0)), stdout);
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}
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int main(int argc, char *argv[]) {
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int i;
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while ((i = getopt(argc, argv, "?h")) != -1) {
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switch (i) {
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case '?':
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case 'h':
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PrintUsage(0, stdout);
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default:
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PrintUsage(1, stderr);
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}
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}
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if (optind == argc) {
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PrintUsage(1, stderr);
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}
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for (i = optind; i < argc; ++i) {
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PrintUri(argv[i]);
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}
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}
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107
tool/viz/img.c
Normal file
107
tool/viz/img.c
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@ -0,0 +1,107 @@
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#if 0
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/*─────────────────────────────────────────────────────────────────╗
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│ To the extent possible under law, Justine Tunney has waived │
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│ all copyright and related or neighboring rights to this file, │
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│ as it is written in the following disclaimers: │
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│ • http://unlicense.org/ │
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│ • http://creativecommons.org/publicdomain/zero/1.0/ │
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╚─────────────────────────────────────────────────────────────────*/
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#endif
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#include "libc/dce.h"
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#include "libc/errno.h"
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#include "libc/log/log.h"
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#include "libc/mem/gc.h"
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#include "libc/runtime/runtime.h"
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#include "libc/stdio/stdio.h"
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#include "libc/x/x.h"
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#include "libc/x/xasprintf.h"
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#include "net/http/escape.h"
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#include "net/http/http.h"
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#include "third_party/getopt/getopt.internal.h"
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#include "third_party/stb/stb_image.h"
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#define USAGE \
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" [FLAGS] IMG...\n\
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Utility for printing HTML <img> tags.\n\
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\n\
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FLAGS\n\
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\n\
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-h Help\n\
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-a Wrap with <a> tag\n\
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-u Embed data:base64 URI\n"
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int scale;
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bool linktag;
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bool datauri;
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bool sizeonly;
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void PrintUsage(int rc, FILE *f) {
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fputs("Usage: ", f);
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fputs(program_invocation_name, f);
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fputs(USAGE, f);
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exit(rc);
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}
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void PrintImg(const char *path) {
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size_t n;
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int yn, xn, cn, w, h;
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void *img, *pix, *src;
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if (!(img = _gc(xslurp(path, &n)))) exit(2);
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if (!(pix = _gc(stbi_load_from_memory(img, n, &xn, &yn, &cn, 0)))) exit(3);
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if (linktag) {
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printf("<a href=\"%s\"\n >", path);
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}
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src = (void *)path;
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if (datauri) {
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src = xasprintf("data:%s;base64,%s", FindContentType(path, -1),
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_gc(EncodeBase64(img, n, &n)));
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}
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w = (xn + (1 << scale) / 2) >> scale;
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h = (yn + (1 << scale) / 2) >> scale;
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if (sizeonly) {
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printf("width=\"%d\" height=\"%d\"", w, h);
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} else {
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printf("<img width=\"%d\" height=\"%d\" alt=\"[%s]\"\n src=\"%s\">", w,
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h, path, src);
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}
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if (linktag) {
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printf("</a>");
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}
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printf("\n");
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}
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int main(int argc, char *argv[]) {
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if (!NoDebug()) ShowCrashReports();
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int i;
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while ((i = getopt(argc, argv, "?huas01234")) != -1) {
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switch (i) {
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case '0':
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case '1':
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case '2':
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case '3':
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case '4':
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scale = i - '0';
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break;
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case 's':
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sizeonly = true;
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break;
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case 'a':
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linktag = true;
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break;
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case 'u':
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datauri = true;
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break;
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case '?':
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case 'h':
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PrintUsage(0, stdout);
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default:
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PrintUsage(1, stderr);
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}
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}
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if (optind == argc) {
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PrintUsage(1, stderr);
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}
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for (i = optind; i < argc; ++i) {
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PrintImg(argv[i]);
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}
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}
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73
tool/viz/rlimit.c
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73
tool/viz/rlimit.c
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@ -0,0 +1,73 @@
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#if 0
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/*─────────────────────────────────────────────────────────────────╗
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│ To the extent possible under law, Justine Tunney has waived │
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│ all copyright and related or neighboring rights to this file, │
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│ as it is written in the following disclaimers: │
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│ • http://unlicense.org/ │
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│ • http://creativecommons.org/publicdomain/zero/1.0/ │
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╚─────────────────────────────────────────────────────────────────*/
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#endif
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#include "libc/calls/calls.h"
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#include "libc/intrin/strace.internal.h"
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#include "libc/calls/struct/rlimit.h"
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#include "libc/errno.h"
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#include "libc/intrin/describeflags.internal.h"
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#include "libc/log/color.internal.h"
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#include "libc/macros.internal.h"
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#include "libc/stdio/stdio.h"
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#include "libc/str/str.h"
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#include "libc/sysv/consts/rlim.h"
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#include "libc/sysv/consts/rlimit.h"
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/**
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* @fileoverview tool for printing and changing system resource limits
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*
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* This is what you do if you want to not accidentally bomb your system
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* with runaway code. If you haven't accidentally bombed your UNIX
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* system before then you're not pushing it hard enough.
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*/
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static void SetLimit(int resource, uint64_t soft, uint64_t hard) {
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struct rlimit old;
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struct rlimit lim = {soft, hard};
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if (resource == 127) return;
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if (setrlimit(resource, &lim) == -1) {
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if (!getrlimit(resource, &old)) {
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lim.rlim_max = MIN(hard, old.rlim_max);
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lim.rlim_cur = MIN(soft, old.rlim_max);
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if (!setrlimit(resource, &lim)) {
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fprintf(stderr, "%sNOTE: SETRLIMIT(%s) DOWNGRADED TO {%,ld, %,ld}\n",
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DescribeRlimitName(resource), lim.rlim_cur, lim.rlim_max);
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return;
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}
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}
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fprintf(stderr, "ERROR: SETRLIMIT(%s, %,ld, %,ld) FAILED %m%n",
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DescribeRlimitName(resource), soft, hard);
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exit(1);
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}
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}
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int main(int argc, char *argv[]) {
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int i, rc;
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char rlnbuf[20];
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struct rlimit rlim;
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// // example of how you might change the limits
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// SetLimit(RLIMIT_CPU, 3, 33);
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// SetLimit(RLIMIT_NPROC, 4, 128);
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// SetLimit(RLIMIT_NOFILE, 32, 128);
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// SetLimit(RLIMIT_SIGPENDING, 16, 1024);
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// SetLimit(RLIMIT_AS, 8 * 1024 * 1024, 1l * 1024 * 1024 * 1024);
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// SetLimit(RLIMIT_RSS, 8 * 1024 * 1024, 1l * 1024 * 1024 * 1024);
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// SetLimit(RLIMIT_DATA, 8 * 1024 * 1024, 1l * 1024 * 1024 * 1024);
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// SetLimit(RLIMIT_FSIZE, 8 * 1000 * 1000, 1l * 1000 * 1000 * 1000);
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for (i = 0; i < RLIM_NLIMITS; ++i) {
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rc = getrlimit(i, &rlim);
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printf("SETRLIMIT(%-20s, %,16ld, %,16ld) → %d %s\n",
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(DescribeRlimitName)(rlnbuf, i), rlim.rlim_cur, rlim.rlim_max, rc,
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!rc ? "" : strerror(errno));
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}
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return 0;
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}
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