29edcad310
. make vm be able to use malloc() by overriding brk() and minix_mmap() functions . phys regions can then be malloc()ed and free()d instead of being in an avl tree, which is slightly faster . 'offset' field in phys_region can go too (offset is implied by position in array) but leads to bigger code changes
205 lines
6.9 KiB
C
205 lines
6.9 KiB
C
/* Function prototypes. */
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struct vmproc;
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struct stat;
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struct memory;
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struct vir_region;
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struct phys_region;
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#include <minix/ipc.h>
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#include <minix/endpoint.h>
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#include <minix/safecopies.h>
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#include <minix/vm.h>
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#include <timers.h>
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#include <stdio.h>
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#include "pt.h"
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#include "vm.h"
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#include "yielded.h"
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/* alloc.c */
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void mem_sanitycheck(char *file, int line);
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phys_clicks alloc_mem(phys_clicks clicks, u32_t flags);
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void memstats(int *nodes, int *pages, int *largest);
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void printmemstats(void);
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void usedpages_reset(void);
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int usedpages_add_f(phys_bytes phys, phys_bytes len, char *file, int
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line);
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void free_mem(phys_clicks base, phys_clicks clicks);
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#define usedpages_add(a, l) usedpages_add_f(a, l, __FILE__, __LINE__)
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void mem_init(struct memory *chunks);
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/* utility.c */
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void get_mem_chunks(struct memory *mem_chunks);
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int vm_isokendpt(endpoint_t ep, int *proc);
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int get_stack_ptr(int proc_nr, vir_bytes *sp);
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int do_info(message *);
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int swap_proc_slot(struct vmproc *src_vmp, struct vmproc *dst_vmp);
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int swap_proc_dyn_data(struct vmproc *src_vmp, struct vmproc *dst_vmp);
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/* exit.c */
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void clear_proc(struct vmproc *vmp);
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int do_exit(message *msg);
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int do_willexit(message *msg);
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int do_procctl(message *msg);
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void free_proc(struct vmproc *vmp);
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/* fork.c */
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int do_fork(message *msg);
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/* break.c */
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int do_brk(message *msg);
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int real_brk(struct vmproc *vmp, vir_bytes v);
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/* map_mem.c */
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int map_memory(endpoint_t sour, endpoint_t dest, vir_bytes virt_s,
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vir_bytes virt_d, vir_bytes length, int flag);
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int unmap_memory(endpoint_t sour, endpoint_t dest, vir_bytes virt_s,
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vir_bytes virt_d, vir_bytes length, int flag);
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/* mmap.c */
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int do_mmap(message *msg);
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int do_munmap(message *msg);
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int do_map_phys(message *msg);
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int do_unmap_phys(message *msg);
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int do_remap(message *m);
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int do_get_phys(message *m);
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int do_get_refcount(message *m);
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/* pagefaults.c */
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void do_pagefaults(message *m);
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void do_memory(void);
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char *pf_errstr(u32_t err);
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int handle_memory(struct vmproc *vmp, vir_bytes mem, vir_bytes len, int
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wrflag);
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/* $(ARCH)/pagetable.c */
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void pt_init();
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void vm_freepages(vir_bytes vir, int pages);
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void pt_init_mem(void);
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void pt_check(struct vmproc *vmp);
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int pt_new(pt_t *pt);
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void pt_free(pt_t *pt);
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int pt_map_in_range(struct vmproc *src_vmp, struct vmproc *dst_vmp,
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vir_bytes start, vir_bytes end);
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int pt_ptmap(struct vmproc *src_vmp, struct vmproc *dst_vmp);
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int pt_ptalloc_in_range(pt_t *pt, vir_bytes start, vir_bytes end, u32_t
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flags, int verify);
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void pt_clearmapcache(void);
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int pt_writemap(struct vmproc * vmp, pt_t *pt, vir_bytes v, phys_bytes
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physaddr, size_t bytes, u32_t flags, u32_t writemapflags);
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int pt_checkrange(pt_t *pt, vir_bytes v, size_t bytes, int write);
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int pt_bind(pt_t *pt, struct vmproc *who);
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void *vm_allocpage(phys_bytes *p, int cat);
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void *vm_allocpages(phys_bytes *p, int cat, int pages);
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void *vm_allocpagedir(phys_bytes *p);
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void pt_cycle(void);
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int pt_mapkernel(pt_t *pt);
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void vm_pagelock(void *vir, int lockflag);
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int vm_addrok(void *vir, int write);
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int get_vm_self_pages(void);
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#if SANITYCHECKS
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void pt_sanitycheck(pt_t *pt, char *file, int line);
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#endif
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/* slaballoc.c */
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void *slaballoc(int bytes);
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void slabfree(void *mem, int bytes);
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void slabstats(void);
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void slab_sanitycheck(char *file, int line);
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#define SLABALLOC(var) (var = slaballoc(sizeof(*var)))
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#define SLABFREE(ptr) do { slabfree(ptr, sizeof(*(ptr))); (ptr) = NULL; } while(0)
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#if SANITYCHECKS
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void slabunlock(void *mem, int bytes);
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void slablock(void *mem, int bytes);
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int slabsane_f(char *file, int line, void *mem, int bytes);
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#endif
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/* region.c */
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void map_region_init(void);
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struct vir_region * map_page_region(struct vmproc *vmp, vir_bytes min,
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vir_bytes max, vir_bytes length, u32_t flags, int mapflags,
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mem_type_t *memtype);
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struct vir_region * map_proc_kernel(struct vmproc *dst);
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int map_region_extend(struct vmproc *vmp, struct vir_region *vr,
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vir_bytes delta);
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int map_region_extend_upto_v(struct vmproc *vmp, vir_bytes vir);
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int map_unmap_region(struct vmproc *vmp, struct vir_region *vr,
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vir_bytes offset, vir_bytes len);
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int map_free_proc(struct vmproc *vmp);
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int map_proc_copy(struct vmproc *dst, struct vmproc *src);
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int map_proc_copy_from(struct vmproc *dst, struct vmproc *src, struct
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vir_region *start_src_vr);
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struct vir_region *map_lookup(struct vmproc *vmp, vir_bytes addr,
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struct phys_region **pr);
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int map_pf(struct vmproc *vmp, struct vir_region *region, vir_bytes
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offset, int write);
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int map_pin_memory(struct vmproc *vmp);
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int map_handle_memory(struct vmproc *vmp, struct vir_region *region,
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vir_bytes offset, vir_bytes len, int write);
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void map_printmap(struct vmproc *vmp);
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int map_writept(struct vmproc *vmp);
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void printregionstats(struct vmproc *vmp);
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void map_setparent(struct vmproc *vmp);
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int yielded_block_cmp(struct block_id *, struct block_id *);
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struct phys_region *map_clone_ph_block(struct vmproc *vmp,
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struct vir_region *region, struct phys_region *ph);
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u32_t vrallocflags(u32_t flags);
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int map_free(struct vir_region *region);
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struct phys_region *physblock_get(struct vir_region *region, vir_bytes offset);
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void physblock_set(struct vir_region *region, vir_bytes offset,
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struct phys_region *newphysr);
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struct vir_region * map_region_lookup_tag(struct vmproc *vmp, u32_t
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tag);
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void map_region_set_tag(struct vir_region *vr, u32_t tag);
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u32_t map_region_get_tag(struct vir_region *vr);
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int map_get_phys(struct vmproc *vmp, vir_bytes addr, phys_bytes *r);
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int map_get_ref(struct vmproc *vmp, vir_bytes addr, u8_t *cnt);
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int physregions(struct vir_region *vr);
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void get_stats_info(struct vm_stats_info *vsi);
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void get_usage_info(struct vmproc *vmp, struct vm_usage_info *vui);
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void get_usage_info_kernel(struct vm_usage_info *vui);
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int get_region_info(struct vmproc *vmp, struct vm_region_info *vri, int
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count, vir_bytes *nextp);
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int copy_abs2region(phys_bytes abs, struct vir_region *destregion,
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phys_bytes offset, phys_bytes len);
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#if SANITYCHECKS
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void map_sanitycheck(char *file, int line);
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void blockstats(void);
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#endif
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int do_forgetblocks(message *m);
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int do_forgetblock(message *m);
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int do_yieldblockgetblock(message *m);
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vir_bytes free_yielded(vir_bytes bytes);
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/* rs.c */
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int do_rs_set_priv(message *m);
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int do_rs_update(message *m);
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int do_rs_memctl(message *m);
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/* queryexit.c */
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int do_query_exit(message *m);
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int do_watch_exit(message *m);
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int do_notify_sig(message *m);
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void init_query_exit(void);
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/* pb.c */
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struct phys_block *pb_new(phys_bytes phys);
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void pb_free(struct phys_block *);
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struct phys_region *pb_reference(struct phys_block *newpb,
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vir_bytes offset, struct vir_region *region);
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void pb_unreferenced(struct vir_region *region, struct phys_region *pr, int rm);
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void pb_link(struct phys_region *newphysr, struct phys_block *newpb,
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vir_bytes offset, struct vir_region *parent);
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/* mem_directphys.c */
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void phys_setphys(struct vir_region *vr, phys_bytes startaddr);
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/* mem_shared.c */
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void shared_setsource(struct vir_region *vr, endpoint_t ep, struct vir_region *src);
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