107 lines
4.8 KiB
C
107 lines
4.8 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 2020 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/bits/bits.h"
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#include "libc/bits/xchg.h"
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#include "libc/calls/calls.h"
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#include "libc/fmt/fmt.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/runtime/gc.h"
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#include "libc/runtime/memtrack.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/map.h"
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#include "libc/sysv/consts/msync.h"
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#include "libc/sysv/consts/o.h"
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#include "libc/sysv/consts/prot.h"
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#include "libc/testlib/testlib.h"
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#include "libc/x/x.h"
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TEST(mmap, testMapFile) {
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int fd;
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char *p;
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char path[PATH_MAX];
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sprintf(path, "%s%s.%d", kTmpPath, program_invocation_short_name, getpid());
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ASSERT_NE(-1, (fd = open(path, O_CREAT | O_TRUNC | O_RDWR, 0644)));
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EXPECT_EQ(5, write(fd, "hello", 5));
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EXPECT_NE(-1, fdatasync(fd));
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EXPECT_NE(MAP_FAILED, (p = mmap(NULL, 5, PROT_READ, MAP_PRIVATE, fd, 0)));
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EXPECT_STREQ("hello", p);
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EXPECT_NE(-1, munmap(p, 5));
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EXPECT_NE(-1, close(fd));
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EXPECT_NE(-1, unlink(path));
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}
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TEST(mmap, testMapFile_fdGetsClosed_makesNoDifference) {
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int fd;
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char *p, buf[16], path[PATH_MAX];
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sprintf(path, "%s%s.%d", kTmpPath, program_invocation_short_name, getpid());
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ASSERT_NE(-1, (fd = open(path, O_CREAT | O_TRUNC | O_RDWR, 0644)));
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EXPECT_EQ(5, write(fd, "hello", 5));
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EXPECT_NE(-1, fdatasync(fd));
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EXPECT_NE(MAP_FAILED,
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(p = mmap(NULL, 5, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0)));
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EXPECT_NE(-1, close(fd));
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EXPECT_STREQ("hello", p);
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p[1] = 'a';
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EXPECT_NE(-1, msync(p, PAGESIZE, MS_SYNC));
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ASSERT_NE(-1, (fd = open(path, O_RDONLY)));
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EXPECT_EQ(5, read(fd, buf, 5));
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EXPECT_STREQN("hallo", buf, 5);
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EXPECT_NE(-1, close(fd));
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EXPECT_NE(-1, munmap(p, 5));
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EXPECT_NE(-1, unlink(path));
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}
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TEST(mmap, testMapFixed_destroysEverythingInItsPath) {
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unsigned m1 = _mmi.i;
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EXPECT_NE(MAP_FAILED, mmap((void *)(kFixedmapStart + FRAMESIZE * 0),
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FRAMESIZE, PROT_READ | PROT_WRITE,
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MAP_FIXED | MAP_PRIVATE | MAP_ANONYMOUS, -1, 0));
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EXPECT_NE(MAP_FAILED, mmap((void *)(kFixedmapStart + FRAMESIZE * 1),
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FRAMESIZE, PROT_READ | PROT_WRITE,
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MAP_FIXED | MAP_PRIVATE | MAP_ANONYMOUS, -1, 0));
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EXPECT_NE(MAP_FAILED, mmap((void *)(kFixedmapStart + FRAMESIZE * 2),
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FRAMESIZE, PROT_READ | PROT_WRITE,
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MAP_FIXED | MAP_PRIVATE | MAP_ANONYMOUS, -1, 0));
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EXPECT_NE(MAP_FAILED, mmap((void *)(kFixedmapStart + FRAMESIZE * 0),
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FRAMESIZE * 3, PROT_READ | PROT_WRITE,
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MAP_FIXED | MAP_PRIVATE | MAP_ANONYMOUS, -1, 0));
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ASSERT_GT(_mmi.i, m1);
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EXPECT_NE(-1, munmap((void *)kFixedmapStart, FRAMESIZE * 3));
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}
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TEST(isheap, nullPtr) {
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ASSERT_FALSE(isheap(NULL));
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}
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TEST(isheap, malloc) {
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ASSERT_TRUE(isheap(gc(malloc(1))));
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}
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TEST(isheap, emptyMalloc) {
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ASSERT_TRUE(isheap(gc(malloc(0))));
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}
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TEST(isheap, mallocOffset) {
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char *p = gc(malloc(131072));
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ASSERT_TRUE(isheap(p + 100000));
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}
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