diff options
Diffstat (limited to 'libpagemap/include')
-rw-r--r-- | libpagemap/include/pagemap/pagemap.h | 171 |
1 files changed, 0 insertions, 171 deletions
diff --git a/libpagemap/include/pagemap/pagemap.h b/libpagemap/include/pagemap/pagemap.h deleted file mode 100644 index 09ff29d8..00000000 --- a/libpagemap/include/pagemap/pagemap.h +++ /dev/null @@ -1,171 +0,0 @@ -/* - * Copyright (C) 2008 The Android Open Source Project - * - * Licensed under the Apache License, Version 2.0 (the "License"); - * you may not use this file except in compliance with the License. - * You may obtain a copy of the License at - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. - */ - -#ifndef _PAGEMAP_PAGEMAP_H -#define _PAGEMAP_PAGEMAP_H - -#include <stdint.h> -#include <stdio.h> -#include <sys/types.h> - -typedef struct pm_memusage pm_memusage_t; - -/* Holds the various metrics for memory usage of a process or a mapping. */ -struct pm_memusage { - size_t vss; - size_t rss; - size_t pss; - size_t uss; -}; - -/* Clears a memusage. */ -void pm_memusage_zero(pm_memusage_t *mu); -/* Adds one memusage (a) to another (b). */ -void pm_memusage_add(pm_memusage_t *a, pm_memusage_t *b); - -typedef struct pm_kernel pm_kernel_t; -typedef struct pm_process pm_process_t; -typedef struct pm_map pm_map_t; - -/* pm_kernel_t holds the state necessary to interface to the kernel's pagemap - * system on a global level. */ -struct pm_kernel { - int kpagecount_fd; - int kpageflags_fd; - - int pagesize; -}; - -/* pm_process_t holds the state necessary to interface to a particular process' - * pagemap. */ -struct pm_process { - pm_kernel_t *ker; - - pid_t pid; - - pm_map_t **maps; - int num_maps; - - int pagemap_fd; -}; - -/* pm_map_t holds the state necessary to access information about a particular - * mapping in a particular process. */ -struct pm_map { - pm_process_t *proc; - - unsigned long start; - unsigned long end; - unsigned long offset; - int flags; - - char *name; -}; - -/* Create a pm_kernel_t. */ -int pm_kernel_create(pm_kernel_t **ker_out); - -#define pm_kernel_pagesize(ker) ((ker)->pagesize) - -/* Get a list of probably-existing PIDs (returned through *pids_out). - * Length of the array (in sizeof(pid_t) units) is returned through *len. - * The array should be freed by the caller. */ -int pm_kernel_pids(pm_kernel_t *ker, pid_t **pids_out, size_t *len); - -/* Get the map count (from /proc/kpagecount) of a physical frame. - * The count is returned through *count_out. */ -int pm_kernel_count(pm_kernel_t *ker, unsigned long pfn, uint64_t *count_out); - -/* Get the page flags (from /proc/kpageflags) of a physical frame. - * The count is returned through *flags_out. */ -int pm_kernel_flags(pm_kernel_t *ker, unsigned long pfn, uint64_t *flags_out); - -#define PM_PAGE_LOCKED (1 << 0) -#define PM_PAGE_ERROR (1 << 1) -#define PM_PAGE_REFERENCED (1 << 2) -#define PM_PAGE_UPTODATE (1 << 3) -#define PM_PAGE_DIRTY (1 << 4) -#define PM_PAGE_LRU (1 << 5) -#define PM_PAGE_ACTIVE (1 << 6) -#define PM_PAGE_SLAB (1 << 7) -#define PM_PAGE_WRITEBACK (1 << 8) -#define PM_PAGE_RECLAIM (1 << 9) -#define PM_PAGE_BUDDY (1 << 10) - -/* Destroy a pm_kernel_t. */ -int pm_kernel_destroy(pm_kernel_t *ker); - -/* Get the PID of a pm_process_t. */ -#define pm_process_pid(proc) ((proc)->pid) - -/* Create a pm_process_t and returns it through *proc_out. - * Takes a pm_kernel_t, and the PID of the process. */ -int pm_process_create(pm_kernel_t *ker, pid_t pid, pm_process_t **proc_out); - -/* Get the total memory usage of a process and store in *usage_out. */ -int pm_process_usage(pm_process_t *proc, pm_memusage_t *usage_out); - -/* Get the working set of a process (if ws_out != NULL), and reset it - * (if reset != 0). */ -int pm_process_workingset(pm_process_t *proc, pm_memusage_t *ws_out, int reset); - -/* Get the PFNs corresponding to a range of virtual addresses. - * The array of PFNs is returned through *range_out, and the caller has the - * responsibility to free it. */ -int pm_process_pagemap_range(pm_process_t *proc, - unsigned long low, unsigned long hi, - uint64_t **range_out, size_t *len); - -#define _BITS(x, offset, bits) (((x) >> offset) & ((1LL << ((bits) + 1)) - 1)) - -#define PM_PAGEMAP_PRESENT(x) (_BITS(x, 63, 1)) -#define PM_PAGEMAP_SWAPPED(x) (!_BITS(x, 62, 1)) -#define PM_PAGEMAP_SHIFT(x) (_BITS(x, 55, 6)) -#define PM_PAGEMAP_PFN(x) (_BITS(x, 0, 55)) -#define PM_PAGEMAP_SWAP_OFFSET(x) (_BITS(x, 5, 50)) -#define PM_PAGEMAP_SWAP_TYPE(x) (_BITS(x, 0, 5)) - -/* Get the maps in the virtual address space of this process. - * Returns an array of pointers to pm_map_t through *maps. - * The array should be freed by the caller, but the maps should not be - * modified or destroyed. */ -int pm_process_maps(pm_process_t *proc, pm_map_t ***maps_out, size_t *len); - -/* Destroy a pm_process_t. */ -int pm_process_destroy(pm_process_t *proc); - -/* Get the name, flags, start/end address, or offset of a map. */ -#define pm_map_name(map) ((map)->name) -#define pm_map_flags(map) ((map)->flags) -#define PM_MAP_READ 1 -#define PM_MAP_WRITE 2 -#define PM_MAP_EXEC 4 -#define pm_map_start(map) ((map)->start) -#define pm_map_end(map) ((map)->end) -#define pm_map_offset(map) ((map)->offset) - -/* Get the PFNs of the pages in the virtual address space of this map. - * Array of PFNs is returned through *pagemap_out, and should be freed by the - * caller. */ -int pm_map_pagemap(pm_map_t *map, uint64_t **pagemap_out, size_t *len); - -/* Get the memory usage of this map alone. */ -int pm_map_usage(pm_map_t *map, pm_memusage_t *usage_out); - -/* Get the working set of this map alone. */ -int pm_map_workingset(pm_map_t *map, pm_memusage_t *ws_out); - -#endif |