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Overhaul process spawning

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Justine Tunney 2023-09-10 08:12:43 -07:00
parent 99dc1281f5
commit 26e254fb4d
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GPG key ID: BE714B4575D6E328
96 changed files with 1848 additions and 1541 deletions
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19
test/libc/intrin/memmove_test.c
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@ -20,9 +20,13 @@
#include "libc/mem/gc.internal.h"
#include "libc/mem/mem.h"
#include "libc/nexgen32e/nexgen32e.h"
#include "libc/runtime/runtime.h"
#include "libc/runtime/sysconf.h"
#include "libc/stdio/rand.h"
#include "libc/stdio/stdio.h"
#include "libc/str/str.h"
#include "libc/sysv/consts/map.h"
#include "libc/sysv/consts/prot.h"
#include "libc/testlib/ezbench.h"
#include "libc/testlib/testlib.h"
@ -81,6 +85,21 @@ TEST(memmove, bighug) {
}
}
TEST(memmove, pageOverlapTorture) {
long pagesz = sysconf(_SC_PAGESIZE);
char *map = mmap(0, pagesz * 2, PROT_READ | PROT_WRITE,
MAP_ANONYMOUS | MAP_PRIVATE, -1, 0);
char *map2 = mmap(0, pagesz * 2, PROT_READ | PROT_WRITE,
MAP_ANONYMOUS | MAP_PRIVATE, -1, 0);
ASSERT_SYS(0, 0, mprotect(map + pagesz, pagesz, PROT_NONE));
ASSERT_SYS(0, 0, mprotect(map2 + pagesz, pagesz, PROT_NONE));
strcpy(map + pagesz - 9, "12345678");
strcpy(map2 + pagesz - 9, "12345679");
__expropriate(memmove(map + pagesz - 9, map2 + pagesz - 9, 9));
EXPECT_SYS(0, 0, munmap(map2, pagesz * 2));
EXPECT_SYS(0, 0, munmap(map, pagesz * 2));
}
BENCH(memmove, bench) {
int n, max = 128 * 1024 * 1024;
char *volatile p = gc(calloc(max, 1));