Project import
diff --git a/librank/Android.mk b/librank/Android.mk
new file mode 100644
index 0000000..101b94a
--- /dev/null
+++ b/librank/Android.mk
@@ -0,0 +1,23 @@
+# 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.
+
+LOCAL_PATH:= $(call my-dir)
+
+include $(CLEAR_VARS)
+LOCAL_SRC_FILES := librank.c
+LOCAL_SHARED_LIBRARIES := libpagemap
+LOCAL_MODULE := librank
+LOCAL_MODULE_PATH := $(TARGET_OUT_OPTIONAL_EXECUTABLES)
+LOCAL_MODULE_TAGS := debug
+include $(BUILD_EXECUTABLE)
diff --git a/librank/MODULE_LICENSE_APACHE2 b/librank/MODULE_LICENSE_APACHE2
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/librank/MODULE_LICENSE_APACHE2
diff --git a/librank/NOTICE b/librank/NOTICE
new file mode 100644
index 0000000..c5b1efa
--- /dev/null
+++ b/librank/NOTICE
@@ -0,0 +1,190 @@
+
+ Copyright (c) 2005-2008, 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.
+
+ 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.
+
+
+ Apache License
+ Version 2.0, January 2004
+ http://www.apache.org/licenses/
+
+ TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+ 1. Definitions.
+
+ "License" shall mean the terms and conditions for use, reproduction,
+ and distribution as defined by Sections 1 through 9 of this document.
+
+ "Licensor" shall mean the copyright owner or entity authorized by
+ the copyright owner that is granting the License.
+
+ "Legal Entity" shall mean the union of the acting entity and all
+ other entities that control, are controlled by, or are under common
+ control with that entity. For the purposes of this definition,
+ "control" means (i) the power, direct or indirect, to cause the
+ direction or management of such entity, whether by contract or
+ otherwise, or (ii) ownership of fifty percent (50%) or more of the
+ outstanding shares, or (iii) beneficial ownership of such entity.
+
+ "You" (or "Your") shall mean an individual or Legal Entity
+ exercising permissions granted by this License.
+
+ "Source" form shall mean the preferred form for making modifications,
+ including but not limited to software source code, documentation
+ source, and configuration files.
+
+ "Object" form shall mean any form resulting from mechanical
+ transformation or translation of a Source form, including but
+ not limited to compiled object code, generated documentation,
+ and conversions to other media types.
+
+ "Work" shall mean the work of authorship, whether in Source or
+ Object form, made available under the License, as indicated by a
+ copyright notice that is included in or attached to the work
+ (an example is provided in the Appendix below).
+
+ "Derivative Works" shall mean any work, whether in Source or Object
+ form, that is based on (or derived from) the Work and for which the
+ editorial revisions, annotations, elaborations, or other modifications
+ represent, as a whole, an original work of authorship. For the purposes
+ of this License, Derivative Works shall not include works that remain
+ separable from, or merely link (or bind by name) to the interfaces of,
+ the Work and Derivative Works thereof.
+
+ "Contribution" shall mean any work of authorship, including
+ the original version of the Work and any modifications or additions
+ to that Work or Derivative Works thereof, that is intentionally
+ submitted to Licensor for inclusion in the Work by the copyright owner
+ or by an individual or Legal Entity authorized to submit on behalf of
+ the copyright owner. For the purposes of this definition, "submitted"
+ means any form of electronic, verbal, or written communication sent
+ to the Licensor or its representatives, including but not limited to
+ communication on electronic mailing lists, source code control systems,
+ and issue tracking systems that are managed by, or on behalf of, the
+ Licensor for the purpose of discussing and improving the Work, but
+ excluding communication that is conspicuously marked or otherwise
+ designated in writing by the copyright owner as "Not a Contribution."
+
+ "Contributor" shall mean Licensor and any individual or Legal Entity
+ on behalf of whom a Contribution has been received by Licensor and
+ subsequently incorporated within the Work.
+
+ 2. Grant of Copyright License. Subject to the terms and conditions of
+ this License, each Contributor hereby grants to You a perpetual,
+ worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+ copyright license to reproduce, prepare Derivative Works of,
+ publicly display, publicly perform, sublicense, and distribute the
+ Work and such Derivative Works in Source or Object form.
+
+ 3. Grant of Patent License. Subject to the terms and conditions of
+ this License, each Contributor hereby grants to You a perpetual,
+ worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+ (except as stated in this section) patent license to make, have made,
+ use, offer to sell, sell, import, and otherwise transfer the Work,
+ where such license applies only to those patent claims licensable
+ by such Contributor that are necessarily infringed by their
+ Contribution(s) alone or by combination of their Contribution(s)
+ with the Work to which such Contribution(s) was submitted. If You
+ institute patent litigation against any entity (including a
+ cross-claim or counterclaim in a lawsuit) alleging that the Work
+ or a Contribution incorporated within the Work constitutes direct
+ or contributory patent infringement, then any patent licenses
+ granted to You under this License for that Work shall terminate
+ as of the date such litigation is filed.
+
+ 4. Redistribution. You may reproduce and distribute copies of the
+ Work or Derivative Works thereof in any medium, with or without
+ modifications, and in Source or Object form, provided that You
+ meet the following conditions:
+
+ (a) You must give any other recipients of the Work or
+ Derivative Works a copy of this License; and
+
+ (b) You must cause any modified files to carry prominent notices
+ stating that You changed the files; and
+
+ (c) You must retain, in the Source form of any Derivative Works
+ that You distribute, all copyright, patent, trademark, and
+ attribution notices from the Source form of the Work,
+ excluding those notices that do not pertain to any part of
+ the Derivative Works; and
+
+ (d) If the Work includes a "NOTICE" text file as part of its
+ distribution, then any Derivative Works that You distribute must
+ include a readable copy of the attribution notices contained
+ within such NOTICE file, excluding those notices that do not
+ pertain to any part of the Derivative Works, in at least one
+ of the following places: within a NOTICE text file distributed
+ as part of the Derivative Works; within the Source form or
+ documentation, if provided along with the Derivative Works; or,
+ within a display generated by the Derivative Works, if and
+ wherever such third-party notices normally appear. The contents
+ of the NOTICE file are for informational purposes only and
+ do not modify the License. You may add Your own attribution
+ notices within Derivative Works that You distribute, alongside
+ or as an addendum to the NOTICE text from the Work, provided
+ that such additional attribution notices cannot be construed
+ as modifying the License.
+
+ You may add Your own copyright statement to Your modifications and
+ may provide additional or different license terms and conditions
+ for use, reproduction, or distribution of Your modifications, or
+ for any such Derivative Works as a whole, provided Your use,
+ reproduction, and distribution of the Work otherwise complies with
+ the conditions stated in this License.
+
+ 5. Submission of Contributions. Unless You explicitly state otherwise,
+ any Contribution intentionally submitted for inclusion in the Work
+ by You to the Licensor shall be under the terms and conditions of
+ this License, without any additional terms or conditions.
+ Notwithstanding the above, nothing herein shall supersede or modify
+ the terms of any separate license agreement you may have executed
+ with Licensor regarding such Contributions.
+
+ 6. Trademarks. This License does not grant permission to use the trade
+ names, trademarks, service marks, or product names of the Licensor,
+ except as required for reasonable and customary use in describing the
+ origin of the Work and reproducing the content of the NOTICE file.
+
+ 7. Disclaimer of Warranty. Unless required by applicable law or
+ agreed to in writing, Licensor provides the Work (and each
+ Contributor provides its Contributions) on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+ implied, including, without limitation, any warranties or conditions
+ of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
+ PARTICULAR PURPOSE. You are solely responsible for determining the
+ appropriateness of using or redistributing the Work and assume any
+ risks associated with Your exercise of permissions under this License.
+
+ 8. Limitation of Liability. In no event and under no legal theory,
+ whether in tort (including negligence), contract, or otherwise,
+ unless required by applicable law (such as deliberate and grossly
+ negligent acts) or agreed to in writing, shall any Contributor be
+ liable to You for damages, including any direct, indirect, special,
+ incidental, or consequential damages of any character arising as a
+ result of this License or out of the use or inability to use the
+ Work (including but not limited to damages for loss of goodwill,
+ work stoppage, computer failure or malfunction, or any and all
+ other commercial damages or losses), even if such Contributor
+ has been advised of the possibility of such damages.
+
+ 9. Accepting Warranty or Additional Liability. While redistributing
+ the Work or Derivative Works thereof, You may choose to offer,
+ and charge a fee for, acceptance of support, warranty, indemnity,
+ or other liability obligations and/or rights consistent with this
+ License. However, in accepting such obligations, You may act only
+ on Your own behalf and on Your sole responsibility, not on behalf
+ of any other Contributor, and only if You agree to indemnify,
+ defend, and hold each Contributor harmless for any liability
+ incurred by, or claims asserted against, such Contributor by reason
+ of your accepting any such warranty or additional liability.
+
+ END OF TERMS AND CONDITIONS
+
diff --git a/librank/librank.c b/librank/librank.c
new file mode 100644
index 0000000..9d1c026
--- /dev/null
+++ b/librank/librank.c
@@ -0,0 +1,490 @@
+/*
+ * 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.
+ */
+
+#include <assert.h>
+#include <dirent.h>
+#include <errno.h>
+#include <getopt.h>
+#include <stdbool.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/types.h>
+#include <unistd.h>
+
+#include <pagemap/pagemap.h>
+
+#define MAX_CMDLINE 256
+
+struct process_info {
+ pid_t pid;
+ char cmdline[MAX_CMDLINE];
+};
+
+struct mapping_info {
+ struct process_info *proc;
+ pm_memusage_t usage;
+};
+
+struct library_info {
+ struct library_info *next;
+ char *name;
+ struct mapping_info **mappings;
+ size_t mappings_count;
+ size_t mappings_size;
+ pm_memusage_t total_usage;
+};
+
+static void usage(char *myname);
+static int getprocname(pid_t pid, char *buf, size_t len);
+static int numcmp(long long a, long long b);
+static int licmp(const void *a, const void *b);
+
+char *library_name_blacklist[] = { "[heap]", "[stack]", "", NULL };
+
+#define declare_sort(field) \
+ static int sort_by_ ## field (const void *a, const void *b)
+
+declare_sort(vss);
+declare_sort(rss);
+declare_sort(pss);
+declare_sort(uss);
+declare_sort(swap);
+
+#define INIT_LIBRARIES 16
+#define INIT_MAPPINGS 4
+
+static int order;
+
+struct library_info **libraries;
+size_t libraries_count;
+size_t libraries_size;
+
+struct library_info *get_library(const char *name, bool all) {
+ size_t i;
+ struct library_info *library;
+
+ if (!all) {
+ for (i = 0; library_name_blacklist[i]; i++)
+ if (!strcmp(name, library_name_blacklist[i]))
+ return NULL;
+ } else {
+ if (name[0] == 0) {
+ name = "[anon]";
+ }
+ }
+
+ for (i = 0; i < libraries_count; i++) {
+ if (!strcmp(libraries[i]->name, name))
+ return libraries[i];
+ }
+
+ if (libraries_count >= libraries_size) {
+ libraries = realloc(libraries, 2 * libraries_size * sizeof(struct library_info *));
+ if (!libraries) {
+ fprintf(stderr, "Couldn't resize libraries array: %s\n", strerror(errno));
+ exit(EXIT_FAILURE);
+ }
+ libraries_size = 2 * libraries_size;
+ }
+
+ library = calloc(1, sizeof(*library));
+ if (!library) {
+ fprintf(stderr, "Couldn't allocate space for library struct: %s\n", strerror(errno));
+ exit(EXIT_FAILURE);
+ }
+ library->name = malloc(strlen(name) + 1);
+ if (!library->name) {
+ fprintf(stderr, "Couldn't allocate space for library name: %s\n", strerror(errno));
+ exit(EXIT_FAILURE);
+ }
+ strcpy(library->name, name);
+ library->mappings = malloc(INIT_MAPPINGS * sizeof(struct mapping_info *));
+ if (!library->mappings) {
+ fprintf(stderr, "Couldn't allocate space for library mappings array: %s\n", strerror(errno));
+ exit(EXIT_FAILURE);
+ }
+ library->mappings_count = 0; library->mappings_size = INIT_MAPPINGS;
+ pm_memusage_zero(&library->total_usage);
+
+ libraries[libraries_count++] = library;
+
+ return library;
+}
+
+struct mapping_info *get_mapping(struct library_info *library, struct process_info *proc) {
+ struct mapping_info *mapping;
+ size_t i;
+
+ for (i = 0; i < library->mappings_count; i++) {
+ if (library->mappings[i]->proc == proc)
+ return library->mappings[i];
+ }
+
+ if (library->mappings_count >= library->mappings_size) {
+ library->mappings = realloc(library->mappings,
+ 2 * library->mappings_size * sizeof(struct mapping_info*));
+ if (!library->mappings) {
+ fprintf(stderr, "Couldn't resize mappings array: %s\n", strerror(errno));
+ exit(EXIT_FAILURE);
+ }
+ library->mappings_size = 2 * library->mappings_size;
+ }
+
+ mapping = calloc(1, sizeof(*mapping));
+ if (!mapping) {
+ fprintf(stderr, "Couldn't allocate space for mapping struct: %s\n", strerror(errno));
+ exit(EXIT_FAILURE);
+ }
+ mapping->proc = proc;
+ pm_memusage_zero(&mapping->usage);
+
+ library->mappings[library->mappings_count++] = mapping;
+
+ return mapping;
+}
+
+struct process_info *get_process(pid_t pid) {
+ struct process_info *process;
+
+ process = calloc(1, sizeof(*process));
+ if (!process) {
+ fprintf(stderr, "Couldn't allocate space for process struct: %s\n", strerror(errno));
+ exit(EXIT_FAILURE);
+ }
+
+ process->pid = pid;
+ getprocname(pid, process->cmdline, sizeof(process->cmdline));
+
+ return process;
+}
+
+static int parse_perm(const char *perm)
+{
+ int ret = 0;
+
+ while (*perm) {
+ switch(*perm) {
+ case 'r':
+ ret |= PM_MAP_READ;
+ break;
+ case 'w':
+ ret |= PM_MAP_WRITE;
+ break;
+ case 'x':
+ ret |= PM_MAP_EXEC;
+ break;
+ default:
+ fprintf(stderr, "Unknown permission '%c'\n", *perm);
+ exit(EXIT_FAILURE);
+ }
+ perm++;
+ }
+ return ret;
+}
+
+int main(int argc, char *argv[]) {
+ char cmdline[256];
+ char *prefix;
+ size_t prefix_len;
+ int (*compfn)(const void *a, const void *b);
+
+ pm_kernel_t *ker;
+ pm_process_t *proc;
+
+ pid_t *pids;
+ size_t num_procs;
+
+ pm_map_t **maps;
+ size_t num_maps;
+ pm_memusage_t map_usage;
+
+ struct library_info *li, **lis;
+ struct mapping_info *mi, **mis;
+ struct process_info *pi;
+
+ size_t i, j;
+ int error;
+ int perm;
+ bool all;
+ uint64_t required_flags;
+ uint64_t flags_mask;
+
+ bool has_swap = false;
+
+ signal(SIGPIPE, SIG_IGN);
+ compfn = &sort_by_pss;
+ order = -1;
+ prefix = NULL;
+ prefix_len = 0;
+ opterr = 0;
+ perm = 0;
+ all = false;
+ required_flags = 0;
+ flags_mask = 0;
+
+ while (1) {
+ int c;
+ const struct option longopts[] = {
+ {"all", 0, 0, 'a'},
+ {"cached", 0, 0, 'c'},
+ {"nocached", 0, 0, 'C'},
+ {"ksm", 0, 0, 'k'},
+ {"help", 0, 0, 'h'},
+ {"pss", 0, 0, 'p'},
+ {"uss", 0, 0, 'u'},
+ {"vss", 0, 0, 'v'},
+ {"rss", 0, 0, 'r'},
+ {"swap", 0, 0, 's'},
+ {"reverse", 0, 0, 'R'},
+ {"path", required_argument, 0, 'P'},
+ {"perm", required_argument, 0, 'm'},
+ {0, 0, 0, 0}
+ };
+ c = getopt_long(argc, argv, "acChkm:pP:uvrsR", longopts, NULL);
+ if (c < 0) {
+ break;
+ }
+ /* Alphabetical cases */
+ switch (c) {
+ case 'a':
+ all = true;
+ break;
+ case 'c':
+ required_flags = 0;
+ flags_mask = PM_PAGE_SWAPBACKED;
+ break;
+ case 'C':
+ required_flags = PM_PAGE_SWAPBACKED;
+ flags_mask = PM_PAGE_SWAPBACKED;
+ break;
+ case 'k':
+ required_flags = PM_PAGE_KSM;
+ flags_mask = PM_PAGE_KSM;
+ break;
+ case 'h':
+ usage(argv[0]);
+ exit(EXIT_SUCCESS);
+ case 'm':
+ perm = parse_perm(optarg);
+ break;
+ case 'p':
+ compfn = &sort_by_pss;
+ break;
+ case 'P':
+ prefix = optarg;
+ prefix_len = strlen(prefix);
+ break;
+ case 'u':
+ compfn = &sort_by_uss;
+ break;
+ case 'v':
+ compfn = &sort_by_vss;
+ break;
+ case 'r':
+ compfn = &sort_by_rss;
+ break;
+ case 's':
+ compfn = &sort_by_swap;
+ break;
+ case 'R':
+ order *= -1;
+ break;
+ case '?':
+ fprintf(stderr, "Invalid argument \"%s\".\n", argv[optind - 1]);
+ usage(argv[0]);
+ exit(EXIT_FAILURE);
+ default:
+ abort();
+ }
+ }
+
+ argc -= optind;
+ argv += optind;
+
+ libraries = malloc(INIT_LIBRARIES * sizeof(struct library_info *));
+ libraries_count = 0; libraries_size = INIT_LIBRARIES;
+ pm_memusage_zero(&map_usage);
+
+ error = pm_kernel_create(&ker);
+ if (error) {
+ fprintf(stderr, "Error initializing kernel interface -- "
+ "does this kernel have pagemap?\n");
+ exit(EXIT_FAILURE);
+ }
+
+ error = pm_kernel_pids(ker, &pids, &num_procs);
+ if (error) {
+ fprintf(stderr, "Error listing processes.\n");
+ exit(EXIT_FAILURE);
+ }
+
+ for (i = 0; i < num_procs; i++) {
+ error = pm_process_create(ker, pids[i], &proc);
+ if (error) {
+ fprintf(stderr, "warning: could not create process interface for %d\n", pids[i]);
+ continue;
+ }
+
+ pi = get_process(pids[i]);
+
+ error = pm_process_maps(proc, &maps, &num_maps);
+ if (error) {
+ fprintf(stderr, "Error listing maps for process %d.\n", proc->pid);
+ exit(EXIT_FAILURE);
+ }
+
+ for (j = 0; j < num_maps; j++) {
+ if (prefix && (strncmp(pm_map_name(maps[j]), prefix, prefix_len)))
+ continue;
+
+ if (perm && (pm_map_flags(maps[j]) & PM_MAP_PERMISSIONS) != perm)
+ continue;
+
+ li = get_library(pm_map_name(maps[j]), all);
+ if (!li)
+ continue;
+
+ mi = get_mapping(li, pi);
+
+ error = pm_map_usage_flags(maps[j], &map_usage, flags_mask,
+ required_flags);
+ if (error) {
+ fprintf(stderr, "Error getting map memory usage of "
+ "map %s in process %d.\n",
+ pm_map_name(maps[j]), proc->pid);
+ exit(EXIT_FAILURE);
+ }
+
+ if (map_usage.swap) {
+ has_swap = true;
+ }
+
+ pm_memusage_add(&mi->usage, &map_usage);
+ pm_memusage_add(&li->total_usage, &map_usage);
+ }
+ }
+
+ printf(" %6s %7s %6s %6s %6s ", "RSStot", "VSS", "RSS", "PSS", "USS");
+
+ if (has_swap) {
+ printf(" %6s ", "Swap");
+ }
+
+ printf("Name/PID\n");
+ fflush(stdout);
+
+ qsort(libraries, libraries_count, sizeof(libraries[0]), &licmp);
+
+ for (i = 0; i < libraries_count; i++) {
+ li = libraries[i];
+
+ printf("%6zdK %7s %6s %6s %6s ", li->total_usage.pss / 1024, "", "", "", "");
+ if (has_swap) {
+ printf(" %6s ", "");
+ }
+ printf("%s\n", li->name);
+ fflush(stdout);
+
+ qsort(li->mappings, li->mappings_count, sizeof(li->mappings[0]), compfn);
+
+ for (j = 0; j < li->mappings_count; j++) {
+ mi = li->mappings[j];
+ pi = mi->proc;
+ printf( " %6s %7zdK %6zdK %6zdK %6zdK ", "",
+ mi->usage.vss / 1024,
+ mi->usage.rss / 1024,
+ mi->usage.pss / 1024,
+ mi->usage.uss / 1024);
+ if (has_swap) {
+ printf("%6zdK ", mi->usage.swap / 1024);
+ }
+ printf(" %s [%d]\n",
+ pi->cmdline,
+ pi->pid);
+ }
+ printf("\n");
+ fflush(stdout);
+ }
+
+ return 0;
+}
+
+static void usage(char *myname) {
+ fprintf(stderr, "Usage: %s [ -P | -L ] [ -v | -r | -p | -u | -s | -h ]\n"
+ "\n"
+ "Sort options:\n"
+ " -v Sort processes by VSS.\n"
+ " -r Sort processes by RSS.\n"
+ " -p Sort processes by PSS.\n"
+ " -u Sort processes by USS.\n"
+ " -s Sort processes by swap.\n"
+ " (Default sort order is PSS.)\n"
+ " -a Show all mappings, including stack, heap and anon.\n"
+ " -P /path Limit libraries displayed to those in path.\n"
+ " -R Reverse sort order (default is descending).\n"
+ " -m [r][w][x] Only list pages that exactly match permissions\n"
+ " -c Only show cached (storage backed) pages\n"
+ " -C Only show non-cached (ram/swap backed) pages\n"
+ " -k Only show pages collapsed by KSM\n"
+ " -h Display this help screen.\n",
+ myname);
+}
+
+static int getprocname(pid_t pid, char *buf, size_t len) {
+ char filename[32];
+ FILE *f;
+
+ snprintf(filename, sizeof(filename), "/proc/%d/cmdline", pid);
+ f = fopen(filename, "r");
+ if (!f) {
+ *buf = '\0';
+ return 1;
+ }
+ if (!fgets(buf, len, f)) {
+ *buf = '\0';
+ fclose(f);
+ return 2;
+ }
+ fclose(f);
+ return 0;
+}
+
+static int numcmp(long long a, long long b) {
+ if (a < b) return -1;
+ if (a > b) return 1;
+ return 0;
+}
+
+static int licmp(const void *a, const void *b) {
+ return order * numcmp(
+ (*((struct library_info**)a))->total_usage.pss,
+ (*((struct library_info**)b))->total_usage.pss
+ );
+}
+
+#define create_sort(field, compfn) \
+ static int sort_by_ ## field (const void *a, const void *b) { \
+ return order * compfn( \
+ (*((struct mapping_info**)a))->usage.field, \
+ (*((struct mapping_info**)b))->usage.field \
+ ); \
+ }
+
+create_sort(vss, numcmp)
+create_sort(rss, numcmp)
+create_sort(pss, numcmp)
+create_sort(uss, numcmp)
+create_sort(swap, numcmp)
