diff options
Diffstat (limited to 'librank/librank.c')
| -rw-r--r-- | librank/librank.c | 349 |
1 files changed, 349 insertions, 0 deletions
diff --git a/librank/librank.c b/librank/librank.c new file mode 100644 index 00000000..13b20974 --- /dev/null +++ b/librank/librank.c @@ -0,0 +1,349 @@ +/* + * 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 <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; + int mappings_count; + int 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); + +#define INIT_LIBRARIES 16 +#define INIT_MAPPINGS 4 + +static int order; + +struct library_info **libraries; +int libraries_count; +int libraries_size; + +struct library_info *get_library(char *name) { + int i; + struct library_info *library; + + for (i = 0; library_name_blacklist[i]; i++) + if (!strcmp(name, library_name_blacklist[i])) + return NULL; + + 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; + int 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*)); + 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; +} + +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; + + int i, j, error; + + compfn = &sort_by_pss; + order = -1; + prefix = NULL; + prefix_len = 0; + + for (i = 1; i < argc; i++) { + if (!strcmp(argv[i], "-P")) { + if (i + 1 >= argc) { + fprintf(stderr, "Option -P requires an argument.\n"); + usage(argv[0]); + exit(EXIT_FAILURE); + } + prefix = argv[++i]; + prefix_len = strlen(prefix); + continue; + } + if (!strcmp(argv[i], "-v")) { compfn = &sort_by_vss; continue; } + if (!strcmp(argv[i], "-r")) { compfn = &sort_by_rss; continue; } + if (!strcmp(argv[i], "-p")) { compfn = &sort_by_pss; continue; } + if (!strcmp(argv[i], "-u")) { compfn = &sort_by_uss; continue; } + if (!strcmp(argv[i], "-R")) { order *= -1; continue; } + if (!strcmp(argv[i], "-h")) { usage(argv[0]); exit(0); } + fprintf(stderr, "Invalid argument \"%s\".\n", argv[i]); + usage(argv[0]); + exit(EXIT_FAILURE); + } + + libraries = malloc(INIT_LIBRARIES * sizeof(struct library_info *)); + libraries_count = 0; libraries_size = INIT_LIBRARIES; + + 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; + + li = get_library(pm_map_name(maps[j])); + if (!li) + continue; + + mi = get_mapping(li, pi); + + error = pm_map_usage(maps[j], &map_usage); + 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); + } + pm_memusage_add(&mi->usage, &map_usage); + pm_memusage_add(&li->total_usage, &map_usage); + } + } + + printf( " %6s %6s %6s %6s %6s %s\n", "RSStot", "VSS", "RSS", "PSS", "USS", "Name/PID"); + fflush(stdout); + + qsort(libraries, libraries_count, sizeof(libraries[0]), &licmp); + + for (i = 0; i < libraries_count; i++) { + li = libraries[i]; + + printf("%6dK %6s %6s %6s %6s %s\n", li->total_usage.pss / 1024, "", "", "", "", 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 %6dK %6dK %6dK %6dK %s [%d]\n", "", + mi->usage.vss / 1024, + mi->usage.rss / 1024, + mi->usage.pss / 1024, + mi->usage.uss / 1024, + 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 | -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" + " (Default sort order is PSS.)\n" + " -P /path Limit libraries displayed to those in path.\n" + " -R Reverse sort order (default is descending).\n" + " -h Display this help screen.\n", + myname); +} + +static int getprocname(pid_t pid, char *buf, size_t len) { + char filename[20]; + FILE *f; + + sprintf(filename, "/proc/%d/cmdline", pid); + f = fopen(filename, "r"); + if (!f) { *buf = '\0'; return 1; } + if (!fgets(buf, len, f)) { *buf = '\0'; 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) |