2bd1e72d5a
We can put this back the moment someone requests it. Pain-free garbage collection for the C language is pretty cool. All it does is overwrite the return address with a trampoline that calls free(). It's not clear what it should be named if it's made a public API.
63 lines
1.9 KiB
C
63 lines
1.9 KiB
C
#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/errno.h"
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#include "libc/log/check.h"
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#include "libc/log/color.internal.h"
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#include "libc/log/log.h"
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#include "libc/mem/mem.h"
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#include "libc/nt/thread.h"
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#include "libc/runtime/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/str/str.h"
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#include "libc/sysv/consts/exit.h"
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#include "libc/sysv/consts/fileno.h"
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#include "libc/sysv/consts/sig.h"
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volatile bool gotctrlc;
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void GotCtrlC(int sig) {
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gotctrlc = true;
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}
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int main(int argc, char *argv[]) {
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ssize_t rc;
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size_t got, wrote;
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unsigned char buf[512];
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struct sigaction saint = {.sa_handler = GotCtrlC};
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fprintf(stderr, "This echos stdio until Ctrl+C is pressed.\n");
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CHECK_NE(-1, sigaction(SIGINT, &saint, NULL));
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for (;;) {
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rc = read(0, buf, BUFSIZ);
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if (rc != -1) {
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got = rc;
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} else {
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CHECK_EQ(EINTR, errno);
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break;
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}
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if (!got) break;
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rc = write(1, buf, got);
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if (rc != -1) {
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wrote = rc;
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} else {
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CHECK_EQ(EINTR, errno);
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break;
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}
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CHECK_EQ(got, wrote);
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}
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if (gotctrlc) {
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fprintf(stderr, "Got Ctrl+C\n");
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} else {
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fprintf(stderr, "Got EOF\n");
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}
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return 0;
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}
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