32fbbd370c
shared with the kernel, mapped into kernel address space; kernel is notified of its location. kernel segment size is increased to make it fit. - map in kernel and other processes that don't have their own page table using single 4MB (global) mapping. - new sanity check facility: objects that are allocated with the slab allocator are, when running with sanity checking on, marked readonly until they are explicitly unlocked using the USE() macro. - another sanity check facility: collect all uses of memory and see if they don't overlap with (a) eachother and (b) free memory - own munmap() and munmap_text() functions. - exec() recovers from out-of-memory conditions properly now; this solves some weird exec() behaviour - chew off memory from the same side of the chunk as where we start scanning, solving some memory fragmentation issues - use avl trees for freelist and phys_ranges in regions - implement most useful part of munmap() - remap() stuff is GQ's for shared memory
23 lines
619 B
C
23 lines
619 B
C
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#include <archtypes.h>
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#include <minix/config.h>
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#include <minix/const.h>
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#include <minix/type.h>
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#include <minix/com.h>
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#include <minix/ipc.h>
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#include <minix/safecopies.h>
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#include <timers.h>
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struct vm_arch {
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struct mem_map vm_seg[NR_LOCAL_SEGS]; /* text, data, stack */
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/* vm_data_top points to top of data address space, as visible
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* from user-space, in bytes.
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* for segments processes this is the same
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* as the top of vm_seg[S] segment. for paged processes this
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* can be much higher (so more memory is available above the
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* stack).
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*/
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u32_t vm_data_top; /* virtual process space in bytes */
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};
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