Write more tests and improve kill() on Windows

2025-05-23 22:02:27 +00:00 · 2023-10-13 02:22:48 -07:00 · 2023-10-13 02:22:48 -07:00 · d458642790
commit d458642790
parent b81a1bd9a8
6 changed files with 183 additions and 13 deletions
--- a/test/libc/calls/sig_test.c
+++ b/test/libc/calls/sig_test.c
@ -0,0 +1,115 @@
+/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
+│vi: set net ft=c ts=2 sts=2 sw=2 fenc=utf-8                                :vi│
+╞══════════════════════════════════════════════════════════════════════════════╡
+│ Copyright 2023 Justine Alexandra Roberts Tunney                              │
+│                                                                              │
+│ Permission to use, copy, modify, and/or distribute this software for         │
+│ any purpose with or without fee is hereby granted, provided that the         │
+│ above copyright notice and this permission notice appear in all copies.      │
+│                                                                              │
+│ THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL                │
+│ WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED                │
+│ WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE             │
+│ AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL         │
+│ DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR        │
+│ PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER               │
+│ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR             │
+│ PERFORMANCE OF THIS SOFTWARE.                                                │
+╚─────────────────────────────────────────────────────────────────────────────*/
+#include "libc/sysv/consts/sig.h"
+#include "libc/atomic.h"
+#include "libc/calls/calls.h"
+#include "libc/calls/struct/sigaction.h"
+#include "libc/dce.h"
+#include "libc/errno.h"
+#include "libc/intrin/kprintf.h"
+#include "libc/nt/enum/context.h"
+#include "libc/nt/struct/context.h"
+#include "libc/nt/thread.h"
+#include "libc/sock/struct/pollfd.h"
+#include "libc/sysv/consts/poll.h"
+#include "libc/testlib/testlib.h"
+#include "libc/thread/posixthread.internal.h"
+#include "libc/thread/thread.h"
+
+atomic_bool ready;
+atomic_bool didit;
+atomic_bool isdone;
+atomic_bool gotsig;
+
+void SetUp(void) {
+  ready = false;
+  didit = false;
+  isdone = false;
+  gotsig = false;
+}
+
+void Teleport(long rdi, long rsi, long rdx, long rcx) {
+  ASSERT_EQ(0x1111111111111111, rdi);
+  ASSERT_EQ(0x2222222222222222, rsi);
+  ASSERT_EQ(0x3333333333333333, rdx);
+  ASSERT_EQ(0x4444444444444444, rcx);
+  didit = true;
+  pthread_exit(0);
+}
+
+void *Worker(void *arg) {
+  for (;;) {
+    ready = true;
+  }
+}
+
+TEST(SetThreadContext, test) {
+  pthread_t th;
+  if (!IsWindows()) return;
+  ASSERT_EQ(0, pthread_create(&th, 0, Worker, 0));
+  while (!ready) donothing;
+  int64_t hand = _pthread_syshand((struct PosixThread *)th);
+  ASSERT_EQ(0, SuspendThread(hand));
+  struct NtContext nc;
+  nc.ContextFlags = kNtContextFull;
+  ASSERT_NE(0, GetThreadContext(hand, &nc));
+  nc.Rsp = (nc.Rsp - 128) & -16;
+  *(long *)(nc.Rsp -= 8) = nc.Rip;
+  nc.Rip = (long)Teleport;
+  nc.Rdi = 0x1111111111111111;
+  nc.Rsi = 0x2222222222222222;
+  nc.Rdx = 0x3333333333333333;
+  nc.Rcx = 0x4444444444444444;
+  ASSERT_NE(0, SetThreadContext(hand, &nc));
+  ASSERT_EQ(1, ResumeThread(hand));
+  ASSERT_EQ(0, pthread_join(th, 0));
+  ASSERT_TRUE(didit);
+}
+
+int pfds[2];
+
+void OnSig(int sig) {
+  gotsig = true;
+}
+
+void *Worker2(void *arg) {
+  do {
+    ASSERT_SYS(EINTR, -1, poll(&(struct pollfd){pfds[0], POLLIN}, 1, -1u));
+  } while (!isdone);
+  didit = true;
+  return 0;
+}
+
+TEST(poll, interrupt) {
+  pthread_t th;
+  signal(SIGUSR1, OnSig);
+  ASSERT_SYS(0, 0, pipe(pfds));
+  ASSERT_EQ(0, pthread_create(&th, 0, Worker2, 0));
+  for (int i = 0; i < 100; ++i) {
+    ASSERT_EQ(0, pthread_kill(th, SIGUSR1));
+    usleep(1000);
+  }
+  isdone = true;
+  ASSERT_EQ(0, pthread_kill(th, SIGUSR1));
+  ASSERT_EQ(0, pthread_join(th, 0));
+  ASSERT_SYS(0, 0, close(pfds[1]));
+  ASSERT_SYS(0, 0, close(pfds[0]));
+  ASSERT_TRUE(gotsig);
+  ASSERT_TRUE(didit);
+}