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Add getcontext() and setcontext()

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Fixes #413
This commit is contained in:
Justine Tunney 2022-06-23 05:59:57 -07:00
parent 2b54f1bcf6
commit 3fc23c6cbc
4 changed files with 204 additions and 0 deletions
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49
test/libc/calls/getcontext_test.c Normal file
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/*-*- 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 2022 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/calls/calls.h"
#include "libc/calls/ucontext.h"
#include "libc/runtime/runtime.h"
#include "libc/testlib/testlib.h"
int x;
bool ok1;
bool ok2;
ucontext_t context;
void func(void) {
x++;
setcontext(&context);
abort();
}
void test(void) {
getcontext(&context);
if (!x) {
ok1 = true;
func();
} else {
ok2 = true;
}
}
TEST(getcontext, test) {
test();
ASSERT_TRUE(ok1);
ASSERT_TRUE(ok2);
}