diff options
Diffstat (limited to 'procrank/procrank.c')
| -rw-r--r-- | procrank/procrank.c | 206 |
1 files changed, 206 insertions, 0 deletions
diff --git a/procrank/procrank.c b/procrank/procrank.c new file mode 100644 index 00000000..585fddcd --- /dev/null +++ b/procrank/procrank.c @@ -0,0 +1,206 @@ +/* + * 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 <dirent.h> +#include <errno.h> +#include <stdlib.h> +#include <sys/types.h> +#include <unistd.h> + +#include <pagemap/pagemap.h> + +struct proc_info { + pid_t pid; + pm_memusage_t usage; + unsigned long wss; +}; + +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); + +#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); + +int (*compfn)(const void *a, const void *b); +static int order; + +#define MAX_PROCS 256 + +int main(int argc, char *argv[]) { + pm_kernel_t *ker; + pm_process_t *proc; + pid_t *pids; + struct proc_info *procs[MAX_PROCS]; + size_t num_procs; + char cmdline[256]; + int error; + + #define WS_OFF 0 + #define WS_ONLY 1 + #define WS_RESET 2 + int ws; + + int i, j; + + compfn = &sort_by_pss; + order = -1; + ws = WS_OFF; + + for (i = 1; i < argc; i++) { + 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], "-w")) { ws = WS_ONLY; continue; } + if (!strcmp(argv[i], "-W")) { ws = WS_RESET; 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); + } + + error = pm_kernel_create(&ker); + if (error) { + fprintf(stderr, "Error creating 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++) { + procs[i] = malloc(sizeof(struct proc_info)); + if (!procs[i]) { + fprintf(stderr, "malloc: %s\n", strerror(errno)); + exit(EXIT_FAILURE); + } + procs[i]->pid = pids[i]; + error = pm_process_create(ker, pids[i], &proc); + if (!error) { + switch (ws) { + case WS_OFF: + pm_process_usage(proc, &procs[i]->usage); + break; + case WS_ONLY: + pm_process_workingset(proc, &procs[i]->usage, 0); + break; + case WS_RESET: + pm_process_workingset(proc, NULL, 1); + break; + } + pm_process_destroy(proc); + } else { + fprintf(stderr, "warning: could not create process interface for %d\n", pids[i]); + pm_memusage_zero(&procs[i]->usage); + } + } + + free(pids); + + if (ws == WS_RESET) exit(0); + + j = 0; + for (i = 0; i < num_procs; i++) { + if (procs[i]->usage.vss) + procs[j++] = procs[i]; + } + num_procs = j; + + qsort(procs, num_procs, sizeof(procs[0]), compfn); + + if (ws) + printf("%5s %7s %7s %7s %s\n", "PID", "WRss", "WPss", "WUss", "cmdline"); + else + printf("%5s %7s %7s %7s %7s %s\n", "PID", "Vss", "Rss", "Pss", "Uss", "cmdline"); + for (i = 0; i < num_procs; i++) { + getprocname(procs[i]->pid, cmdline, sizeof(cmdline)); + if (ws) + printf("%5d %6dK %6dK %6dK %s\n", + procs[i]->pid, + procs[i]->usage.rss / 1024, + procs[i]->usage.pss / 1024, + procs[i]->usage.uss / 1024, + cmdline + ); + else + printf("%5d %6dK %6dK %6dK %6dK %s\n", + procs[i]->pid, + procs[i]->usage.vss / 1024, + procs[i]->usage.rss / 1024, + procs[i]->usage.pss / 1024, + procs[i]->usage.uss / 1024, + cmdline + ); + } + + return 0; +} + +static void usage(char *myname) { + fprintf(stderr, "Usage: %s [ -W ] [ -v | -r | -p | -u | -h ]\n" + " -v Sort by VSS.\n" + " -r Sort by RSS.\n" + " -p Sort by PSS.\n" + " -u Sort by USS.\n" + " (Default sort order is PSS.)\n" + " -R Reverse sort order (default is descending).\n" + " -w Display statistics for working set only.\n" + " -W Reset working set of all processes.\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; +} + +#define create_sort(field, compfn) \ + static int sort_by_ ## field (const void *a, const void *b) { \ + return order * compfn( \ + (*((struct proc_info**)a))->usage.field, \ + (*((struct proc_info**)b))->usage.field \ + ); \ + } + +create_sort(vss, numcmp) +create_sort(rss, numcmp) +create_sort(pss, numcmp) +create_sort(uss, numcmp) |