mirror of
https://github.com/jart/cosmopolitan.git
synced 2025-02-01 03:53:33 +00:00
ae638c0850
- Get clone() working on FreeBSD - Increase some Python build quotas - Add more atomic builtins to chibicc - Fix ASAN poisoning of alloca() memory - Make MODE= mandatory link path tinier - Improve the examples folder a little bit - Start working on some more resource limits - Make the linenoise auto-complete UI as good as GNU readline - Update compile.com, avoiding AVX codegen on non-AVX systems - Make sure empty path to syscalls like opendir raises ENOENT - Correctly polyfill ENOENT vs. ENOTDIR on the New Technology - Port bestline's paredit features to //third_party/linenoise - Remove workarounds for RHEL 5.0 bugs that were fixed in 5.1
93 lines
3.8 KiB
C
93 lines
3.8 KiB
C
/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
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│vi: set net ft=c ts=2 sts=2 sw=2 fenc=utf-8 :vi│
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╞══════════════════════════════════════════════════════════════════════════════╡
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│ Copyright 2021 Justine Alexandra Roberts Tunney │
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│ │
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│ Permission to use, copy, modify, and/or distribute this software for │
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│ any purpose with or without fee is hereby granted, provided that the │
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│ above copyright notice and this permission notice appear in all copies. │
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│ │
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│ THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL │
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│ WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED │
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│ WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE │
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│ AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL │
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│ DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR │
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│ PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER │
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│ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR │
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│ PERFORMANCE OF THIS SOFTWARE. │
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╚─────────────────────────────────────────────────────────────────────────────*/
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#include "libc/calls/calls.h"
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#include "libc/macros.internal.h"
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#include "libc/runtime/runtime.h"
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#include "libc/sysv/consts/map.h"
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#include "libc/sysv/consts/msync.h"
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#include "libc/sysv/consts/prot.h"
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#include "libc/testlib/ezbench.h"
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#include "libc/testlib/testlib.h"
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TEST(fork, testPipes) {
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int a, b;
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int ws, pid;
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int pipefds[2];
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ASSERT_NE(-1, pipe(pipefds));
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ASSERT_NE(-1, (pid = fork()));
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if (!pid) {
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a = 31337;
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close(pipefds[0]);
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write(pipefds[1], &a, sizeof(a));
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close(pipefds[1]);
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_exit(0);
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}
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EXPECT_NE(-1, close(pipefds[1]));
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EXPECT_EQ(sizeof(b), read(pipefds[0], &b, sizeof(b)));
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EXPECT_NE(-1, close(pipefds[0]));
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EXPECT_NE(-1, waitpid(pid, &ws, 0));
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EXPECT_EQ(31337, b);
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}
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TEST(fork, testSharedMemory) {
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int ws, pid;
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int stackvar;
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int *sharedvar;
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int *privatevar;
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EXPECT_NE(MAP_FAILED,
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(sharedvar = mmap(NULL, FRAMESIZE, PROT_READ | PROT_WRITE,
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MAP_SHARED | MAP_ANONYMOUS, -1, 0)));
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EXPECT_NE(MAP_FAILED,
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(privatevar = mmap(NULL, FRAMESIZE, PROT_READ | PROT_WRITE,
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MAP_PRIVATE | MAP_ANONYMOUS, -1, 0)));
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stackvar = 1;
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*sharedvar = 1;
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*privatevar = 1;
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EXPECT_NE(-1, (pid = fork()));
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if (!pid) {
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EXPECT_EQ(NULL, getenv("_FORK"));
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++stackvar;
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++*sharedvar;
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++*privatevar;
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msync((void *)ROUNDDOWN((intptr_t)&stackvar, FRAMESIZE), FRAMESIZE,
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MS_SYNC);
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EXPECT_NE(-1, msync(privatevar, FRAMESIZE, MS_SYNC));
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EXPECT_NE(-1, msync(sharedvar, FRAMESIZE, MS_SYNC));
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_exit(0);
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}
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EXPECT_NE(-1, waitpid(pid, &ws, 0));
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EXPECT_EQ(1, stackvar);
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EXPECT_EQ(2, *sharedvar);
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EXPECT_EQ(1, *privatevar);
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EXPECT_NE(-1, munmap(sharedvar, FRAMESIZE));
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EXPECT_NE(-1, munmap(privatevar, FRAMESIZE));
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}
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void ForkInSerial(void) {
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int pid, ws;
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ASSERT_NE(-1, (pid = fork()));
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if (!pid) _Exit(0);
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ASSERT_NE(-1, waitpid(pid, &ws, 0));
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ASSERT_TRUE(WIFEXITED(ws));
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ASSERT_EQ(0, WEXITSTATUS(ws));
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}
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BENCH(fork, bench) {
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EZBENCH2("fork", donothing, ForkInSerial());
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}
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