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Make improvements

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- Make rand64() thread safe
- Introduce lemur64 lcg prng
- Improve strace on New Technology
- Improve msync() on New Technology
This commit is contained in:
Justine Tunney 2022-04-07 00:15:35 -07:00
parent 43ba3009b2
commit 29bf8b1a30
73 changed files with 888 additions and 269 deletions
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41
libc/runtime/fork-nt.c
View file

@ -177,23 +177,8 @@ textwindows void WinMainForked(void) {
}
} else {
// we can however safely inherit MAP_SHARED with zero copy
if (maps[i].prot & PROT_WRITE) {
if (maps[i].prot & PROT_EXEC) {
flags2 = kNtFileMapWrite | kNtFileMapExecute;
} else {
flags2 = kNtFileMapWrite;
}
} else if (maps[i].prot & PROT_READ) {
if (maps[i].prot & PROT_EXEC) {
flags2 = kNtFileMapRead | kNtFileMapExecute;
} else {
flags2 = kNtFileMapRead;
}
} else {
flags2 = 0;
}
if (!MapViewOfFileEx(maps[i].h, flags2, maps[i].offset >> 32,
maps[i].offset, size, addr)) {
if (!MapViewOfFileEx(maps[i].h, __nt2prot(maps[i].prot).flags2,
maps[i].offset >> 32, maps[i].offset, size, addr)) {
ExitProcess(45);
}
}
@ -216,29 +201,14 @@ textwindows void WinMainForked(void) {
_mmi.n = specialz / sizeof(_mmi.p[0]);
for (i = 0; i < mapcount; ++i) {
if ((maps[i].flags & MAP_PRIVATE) && (~maps[i].prot & PROT_WRITE)) {
if (maps[i].prot & PROT_WRITE) {
if (maps[i].prot & PROT_EXEC) {
flags1 = kNtPageExecuteReadwrite;
} else {
flags1 = kNtPageReadwrite;
}
} else if (maps[i].prot & PROT_READ) {
if (maps[i].prot & PROT_EXEC) {
flags1 = kNtPageExecuteRead;
} else {
flags1 = kNtPageReadonly;
}
} else {
flags1 = kNtPageNoaccess;
}
VirtualProtect((void *)((uint64_t)maps[i].x << 16),
ROUNDUP(maps[i].size, FRAMESIZE), flags1, &oldprot);
ROUNDUP(maps[i].size, FRAMESIZE),
__nt2prot(maps[i].prot).flags1, &oldprot);
}
}
// we're all done reading!
if (!CloseHandle(reader)) {
STRACE("CloseHandle(reader) failed %m");
ExitProcess(47);
}
@ -309,7 +279,6 @@ textwindows int sys_fork_nt(void) {
if (ok) ok = WriteAll(writer, __bss_start, __bss_end - __bss_start);
if (ok) {
if (!CloseHandle(writer)) {
STRACE("CloseHandle(writer) failed %m");
ok = false;
}
}
@ -332,7 +301,7 @@ textwindows int sys_fork_nt(void) {
}
} else {
STRACE("CreatePipe() failed %m");
rc = __winerr();
rc = -1;
CloseHandle(writer);
}
} else {