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db33973e0a
This is done without using Microsoft's internal APIs. MAP_PRIVATE mappings are copied to the subprocess via a pipe, since Microsoft doesn't want us to have proper COW pages. MAP_SHARED mappings are remapped without needing to do any copying. Global variables need copying along with the stack and the whole heap of anonymous mem. This actually improves the reliability of the redbean http server although one shouldn't expect 10k+ connections on a home computer that isn't running software built to serve like Linux or FreeBSD.
36 lines
1.2 KiB
C
36 lines
1.2 KiB
C
#ifndef COSMOPOLITAN_LIBC_RUNTIME_MEMTRACK_H_
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#define COSMOPOLITAN_LIBC_RUNTIME_MEMTRACK_H_
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#include "libc/macros.h"
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#include "libc/runtime/runtime.h"
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#if !(__ASSEMBLER__ + __LINKER__ + 0)
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COSMOPOLITAN_C_START_
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#define kAutomapStart 0x0000100080000000 // asan can't spread its poison here
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#define kAutomapSize 0x00000fff80000000
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#define kFixedmapStart 0x0000200000000000
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struct MemoryIntervals {
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int i;
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struct MemoryInterval {
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int x;
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int y;
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long h;
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int prot;
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int flags;
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} p[128];
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};
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extern struct MemoryIntervals _mmi;
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unsigned FindMemoryInterval(const struct MemoryIntervals *, int) nosideeffect;
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bool AreMemoryIntervalsOk(const struct MemoryIntervals *) nosideeffect;
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void PrintMemoryIntervals(int, const struct MemoryIntervals *);
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int TrackMemoryInterval(struct MemoryIntervals *, int, int, long, int, int);
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int ReleaseMemoryIntervals(struct MemoryIntervals *, int, int,
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void (*)(struct MemoryIntervals *, int, int));
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void ReleaseMemoryNt(struct MemoryIntervals *, int, int);
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int UntrackMemoryIntervals(void *, size_t);
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COSMOPOLITAN_C_END_
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#endif /* !(__ASSEMBLER__ + __LINKER__ + 0) */
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#endif /* COSMOPOLITAN_LIBC_RUNTIME_MEMTRACK_H_ */
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