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15ea0524b3
This change reduces o/tiny/examples/life from 44kb to 24kb in size since it avoids linking mmap() when unnecessary. This is important, to helping cosmo not completely lose touch with its roots.
56 lines
1.4 KiB
C
56 lines
1.4 KiB
C
#ifndef COSMOPOLITAN_LIBC_RUNTIME_MAPS_H_
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#define COSMOPOLITAN_LIBC_RUNTIME_MAPS_H_
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#include "libc/intrin/atomic.h"
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#include "libc/intrin/dll.h"
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#include "libc/thread/tls2.internal.h"
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COSMOPOLITAN_C_START_
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#define MAP_CONTAINER(e) DLL_CONTAINER(struct Map, elem, e)
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struct Map {
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struct Map *next; /* for __maps.maps */
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char *addr; /* granule aligned */
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size_t size; /* must be nonzero */
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struct Dll elem; /* for __maps.free */
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int64_t off; /* -1 if anonymous */
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int prot; /* memory protects */
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int flags; /* memory map flag */
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bool iscow; /* windows nt only */
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bool readonlyfile; /* windows nt only */
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unsigned visited; /* used for checks */
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intptr_t h; /* windows nt only */
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};
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struct Maps {
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unsigned mono;
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atomic_int lock;
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struct Map *maps;
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struct Dll *free;
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struct Map stack;
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struct Dll *used;
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size_t count;
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size_t pages;
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};
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struct AddrSize {
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char *addr;
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size_t size;
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};
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extern struct Maps __maps;
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void __maps_init(void);
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void __maps_lock(void);
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void __maps_check(void);
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void __maps_unlock(void);
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void __maps_add(struct Map *);
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struct Map *__maps_alloc(void);
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void __maps_free(struct Map *);
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void __maps_insert(struct Map *);
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int __munmap(char *, size_t, bool);
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void *__mmap(char *, size_t, int, int, int, int64_t);
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void __maps_stack(void *, int, size_t, int, intptr_t);
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struct AddrSize __get_main_stack(void);
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COSMOPOLITAN_C_END_
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#endif /* COSMOPOLITAN_LIBC_RUNTIME_MAPS_H_ */
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