mirrors/cosmopolitan
1
0
Fork 0
mirror of https://github.com/jart/cosmopolitan.git synced 2025-06-28 15:28:30 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions 1

Make mappings unlimited on NT

Browse source 
This change might also fix fork() in certain cases on NT.
This commit is contained in:
Justine Tunney 2021-09-04 13:20:47 -07:00
parent ab64c746cc
commit 34b68f1945
31 changed files with 356 additions and 127 deletions
Download patch file Download diff file Expand all files Collapse all files

53
libc/runtime/memtrack.internal.h Normal file
View file

@ -0,0 +1,53 @@
#ifndef COSMOPOLITAN_LIBC_RUNTIME_MEMTRACK_H_
#define COSMOPOLITAN_LIBC_RUNTIME_MEMTRACK_H_
#include "libc/dce.h"
#include "libc/macros.internal.h"
#include "libc/nt/enum/version.h"
#include "libc/runtime/runtime.h"
#if !(__ASSEMBLER__ + __LINKER__ + 0)
COSMOPOLITAN_C_START_
#define _kAutomapStart 0x0000100080000000 /* asan can't spread its poison */
#define _kAutomapSize 0x00000fff80000000 /* beyond the above mem address */
#define _kFixedmapStart 0x0000200000000000
/*
* TODO: Why can't we allocate addresses above 4GB on Windows 7 x64?
* https://github.com/jart/cosmopolitan/issues/19
*/
#define MEMTRACK_ADDRESS(NORMAL, WIN7) \
(!(IsWindows() && NtGetVersion() < kNtVersionWindows10) ? NORMAL : WIN7)
#define kAutomapStart MEMTRACK_ADDRESS(_kAutomapStart, 0x10000000)
#define kAutomapSize MEMTRACK_ADDRESS(_kAutomapSize, 0x40000000)
#define kFixedmapStart MEMTRACK_ADDRESS(_kFixedmapStart, 0x40000000)
struct MemoryInterval {
int x;
int y;
long h;
int prot;
int flags;
};
struct MemoryIntervals {
long i, n;
struct MemoryInterval *p;
struct MemoryInterval s[OPEN_MAX];
};
extern hidden struct MemoryIntervals _mmi;
unsigned FindMemoryInterval(const struct MemoryIntervals *,
int) nosideeffect hidden;
bool AreMemoryIntervalsOk(const struct MemoryIntervals *) nosideeffect hidden;
void PrintMemoryIntervals(int, const struct MemoryIntervals *) hidden;
int TrackMemoryInterval(struct MemoryIntervals *, int, int, long, int,
int) hidden;
int ReleaseMemoryIntervals(struct MemoryIntervals *, int, int,
void (*)(struct MemoryIntervals *, int, int)) hidden;
void ReleaseMemoryNt(struct MemoryIntervals *, int, int) hidden;
int UntrackMemoryIntervals(void *, size_t) hidden;
COSMOPOLITAN_C_END_
#endif /* !(__ASSEMBLER__ + __LINKER__ + 0) */
#endif /* COSMOPOLITAN_LIBC_RUNTIME_MEMTRACK_H_ */