mirrors/cosmopolitan
1
0
Fork 0
mirror of https://github.com/jart/cosmopolitan.git synced 2025-05-28 08:12:28 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions 1

Make improvements

Browse source 
- 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
Download patch file Download diff file Expand all files Collapse all files

36
libc/runtime/msync-nt.c
View file

@ -17,22 +17,40 @@
│ PERFORMANCE OF THIS SOFTWARE. │
╚─────────────────────────────────────────────────────────────────────────────*/
#include "libc/calls/internal.h"
#include "libc/intrin/kprintf.h"
#include "libc/macros.internal.h"
#include "libc/nt/files.h"
#include "libc/nt/memory.h"
#include "libc/runtime/memtrack.internal.h"
#include "libc/sysv/consts/msync.h"
noasan textwindows int sys_msync_nt(void *addr, size_t size, int flags) {
int x, y, l, r, i;
x = ROUNDDOWN((intptr_t)addr, FRAMESIZE) >> 16;
y = ROUNDDOWN((intptr_t)addr + size - 1, FRAMESIZE) >> 16;
for (i = FindMemoryInterval(&_mmi, x); i < _mmi.i; ++i) {
if ((x >= _mmi.p[i].x && x <= _mmi.p[i].y) ||
(y >= _mmi.p[i].x && y <= _mmi.p[i].y)) {
FlushFileBuffers(_mmi.p[i].h);
#define ADDR(x) ((char *)((int64_t)((uint64_t)(x) << 32) >> 16))
noasan textwindows int sys_msync_nt(char *addr, size_t size, int flags) {
char *a, *b;
int rc, x, y, l, r, i;
rc = 0;
for (i = FindMemoryInterval(&_mmi, (intptr_t)addr >> 16); i < _mmi.i; ++i) {
if ((ADDR(_mmi.p[i].x) <= addr && addr < ADDR(_mmi.p[i].y + 1)) ||
(ADDR(_mmi.p[i].x) < addr + size &&
addr + size <= ADDR(_mmi.p[i].y + 1)) ||
(addr < ADDR(_mmi.p[i].x) && ADDR(_mmi.p[i].y + 1) < addr + size)) {
a = MIN(MAX(addr, ADDR(_mmi.p[i].x)), ADDR(_mmi.p[i].y + 1));
b = MAX(MIN(addr + size, ADDR(_mmi.p[i].y + 1)), ADDR(_mmi.p[i].x));
if (!FlushViewOfFile(a, b - a)) {
rc = -1;
break;
}
if (flags & MS_SYNC) {
if (!FlushFileBuffers(_mmi.p[i].h)) {
// TODO(jart): what's up with this?
// rc = -1;
// break;
}
}
} else {
break;
}
}
return 0;
return rc;
}