mirror of
https://github.com/jart/cosmopolitan.git
synced 2025-01-31 03:27:39 +00:00
b0df6c1fce
Cosmopolitan now supports 104 time zones. They're embedded inside any binary that links the localtime() function. Doing so adds about 100kb to the binary size. This change also gets time zones working properly on Windows for the first time. It's not needed to have /etc/localtime exist on Windows, since we can get this information from WIN32. We're also now updated to the latest version of Paul Eggert's TZ library.
72 lines
2.6 KiB
C
72 lines
2.6 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/assert.h"
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#include "libc/calls/calls.h"
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#include "libc/calls/struct/itimerval.h"
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#include "libc/calls/struct/sigaction.h"
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#include "libc/calls/struct/siginfo.h"
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#include "libc/calls/ucontext.h"
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#include "libc/stdio/stdio.h"
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#include "libc/sysv/consts/itimer.h"
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#include "libc/sysv/consts/sa.h"
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#include "libc/sysv/consts/sig.h"
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#include "libc/time.h"
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volatile bool gotalrm;
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void OnSigAlrm(int sig, siginfo_t *si, void *ctx) {
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gotalrm = true;
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}
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int main() {
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//////////////////////////////////////////////////////////////////////////////
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printf("first tutorial: set singleshot alarm for 1.5 seconds from now\n");
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// setup alarm in 1.5 seconds
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// this timer tears itself down once it's handled
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struct itimerval shot = {{0, 0}, {1, 500000}};
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struct sigaction handler = {.sa_sigaction = OnSigAlrm,
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.sa_flags = SA_RESETHAND | SA_SIGINFO};
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unassert(!sigaction(SIGALRM, &handler, 0));
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unassert(!setitimer(ITIMER_REAL, &shot, 0));
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// wait for alarm
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pause();
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printf("got singleshot alarm!\n\n");
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//////////////////////////////////////////////////////////////////////////////
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printf("second tutorial: interval timer\n");
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// setup timer every 1.5 seconds
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struct sigaction oldalrm;
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struct sigaction sigalrm = {.sa_sigaction = OnSigAlrm,
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.sa_flags = SA_SIGINFO};
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unassert(!sigaction(SIGALRM, &sigalrm, &oldalrm));
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struct itimerval oldtimer;
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struct itimerval timer = {{1, 500000}, {1, 500000}};
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unassert(!setitimer(ITIMER_REAL, &timer, &oldtimer));
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// wait for three timeouts
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int i = 0;
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int n = 3;
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while (i < n) {
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pause();
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if (gotalrm) {
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++i;
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printf("got timeout %d out of %d\n", i, n);
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gotalrm = false;
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}
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}
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// teardown timer
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unassert(!setitimer(ITIMER_REAL, &oldtimer, 0));
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unassert(!sigaction(SIGALRM, &oldalrm, 0));
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}
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