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Use better memory strategy on Windows

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Rather than using the the rollo global to pick addresses, we select them
randomly now using a conservative vaspace.
This commit is contained in:
Justine Tunney 2024-07-20 02:20:03 -07:00
parent 6a5d4ed65b
commit 2018cac11f
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GPG key ID: BE714B4575D6E328
13 changed files with 113 additions and 124 deletions
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17
test/libc/intrin/mremap_test.c
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@ -42,8 +42,9 @@ TEST(mremap, dontMove_hasRoom_itMoves) {
return; // NetBSD requires MREMAP_MAYMOVE
char *p;
int pagesz = getpagesize();
ASSERT_NE(MAP_FAILED, (p = mmap(randaddr(), pagesz, PROT_READ | PROT_EXEC,
MAP_PRIVATE | MAP_ANONYMOUS, -1, 0)));
ASSERT_NE(MAP_FAILED,
(p = mmap(__maps_randaddr(), pagesz, PROT_READ | PROT_EXEC,
MAP_PRIVATE | MAP_ANONYMOUS, -1, 0)));
EXPECT_TRUE(testlib_memoryexists(p));
EXPECT_FALSE(testlib_memoryexists(p + pagesz));
ASSERT_SYS(0, p, mremap(p, pagesz, pagesz * 2, 0));
@ -59,8 +60,9 @@ TEST(mremap, dontMove_noRoom_itFailsWithEnomem) {
return; // NetBSD requires MREMAP_MAYMOVE
char *p;
int pagesz = getpagesize();
ASSERT_NE(MAP_FAILED, (p = mmap(randaddr(), pagesz * 2, PROT_READ | PROT_EXEC,
MAP_PRIVATE | MAP_ANONYMOUS, -1, 0)));
ASSERT_NE(MAP_FAILED,
(p = mmap(__maps_randaddr(), pagesz * 2, PROT_READ | PROT_EXEC,
MAP_PRIVATE | MAP_ANONYMOUS, -1, 0)));
EXPECT_TRUE(testlib_memoryexists(p + pagesz * 0));
EXPECT_TRUE(testlib_memoryexists(p + pagesz * 1));
EXPECT_FALSE(testlib_memoryexists(p + pagesz * 2));
@ -77,8 +79,9 @@ TEST(mremap, dontMove_noRoom_itFailsWithEnomem) {
TEST(mremap, mayMove_noRoom_itRelocates) {
char *p, *p2;
int pagesz = getpagesize();
ASSERT_NE(MAP_FAILED, (p = mmap(randaddr(), pagesz * 2, PROT_READ | PROT_EXEC,
MAP_PRIVATE | MAP_ANONYMOUS, -1, 0)));
ASSERT_NE(MAP_FAILED,
(p = mmap(__maps_randaddr(), pagesz * 2, PROT_READ | PROT_EXEC,
MAP_PRIVATE | MAP_ANONYMOUS, -1, 0)));
EXPECT_TRUE(testlib_memoryexists(p + pagesz * 0));
EXPECT_TRUE(testlib_memoryexists(p + pagesz * 1));
EXPECT_FALSE(testlib_memoryexists(p + pagesz * 2));
@ -112,7 +115,7 @@ TEST(mremap, mayMove_noRoom_itRelocates) {
TEST(mremap, bench) {
#define N 10
long size = 1024 * 1024;
char *rollo = randaddr();
char *rollo = __maps_randaddr();
char *addr[N];
// create mappings