diff options
Diffstat (limited to 'showmap/showmap.c')
| -rw-r--r-- | showmap/showmap.c | 232 |
1 files changed, 232 insertions, 0 deletions
diff --git a/showmap/showmap.c b/showmap/showmap.c new file mode 100644 index 00000000..e8c7dd50 --- /dev/null +++ b/showmap/showmap.c @@ -0,0 +1,232 @@ +#include <stdio.h> +#include <stdlib.h> +#include <math.h> +#include <string.h> +#include <errno.h> +#include <unistd.h> +#include <fcntl.h> + +#include <ctype.h> +#include <stddef.h> + +typedef struct mapinfo mapinfo; + +struct mapinfo { + mapinfo *next; + unsigned start; + unsigned end; + unsigned size; + unsigned rss; + unsigned pss; + unsigned shared_clean; + unsigned shared_dirty; + unsigned private_clean; + unsigned private_dirty; + char name[1]; +}; + +// 6f000000-6f01e000 rwxp 00000000 00:0c 16389419 /android/lib/libcomposer.so +// 012345678901234567890123456789012345678901234567890123456789 +// 0 1 2 3 4 5 + +mapinfo *read_mapinfo(FILE *fp) +{ + char line[1024]; + mapinfo *mi; + int len; + int skip; + +again: + skip = 0; + + if(fgets(line, 1024, fp) == 0) return 0; + + len = strlen(line); + if(len < 1) return 0; + line[--len] = 0; + + mi = calloc(1, sizeof(mapinfo) + len + 16); + if(mi == 0) return 0; + + mi->start = strtoul(line, 0, 16); + mi->end = strtoul(line + 9, 0, 16); + + if(len < 50) { + if((mi->start >= 0x10000000) && (mi->start < 0x40000000)) { + strcpy(mi->name, "[stack]"); + } else if(mi->start > 0x50000000) { + strcpy(mi->name, "[lib_bss]"); + } else { + strcpy(mi->name, "[anon]"); + } + } else { + strcpy(mi->name, line + 49); + } + + if(fgets(line, 1024, fp) == 0) goto oops; + if(sscanf(line, "Size: %d kB", &mi->size) != 1) goto oops; + if(fgets(line, 1024, fp) == 0) goto oops; + if(sscanf(line, "Rss: %d kB", &mi->rss) != 1) goto oops; + if(fgets(line, 1024, fp) == 0) goto oops; + if(sscanf(line, "Pss: %d kB", &mi->pss) == 1) + if(fgets(line, 1024, fp) == 0) goto oops; + if(sscanf(line, "Shared_Clean: %d kB", &mi->shared_clean) != 1) goto oops; + if(fgets(line, 1024, fp) == 0) goto oops; + if(sscanf(line, "Shared_Dirty: %d kB", &mi->shared_dirty) != 1) goto oops; + if(fgets(line, 1024, fp) == 0) goto oops; + if(sscanf(line, "Private_Clean: %d kB", &mi->private_clean) != 1) goto oops; + if(fgets(line, 1024, fp) == 0) goto oops; + if(sscanf(line, "Private_Dirty: %d kB", &mi->private_dirty) != 1) goto oops; + if(fgets(line, 1024, fp) == 0) goto oops; + + if(skip) { + free(mi); + goto again; + } + + return mi; +oops: + free(mi); + return 0; +} + + +mapinfo *load_maps(int pid, int verbose) +{ + char tmp[128]; + FILE *fp; + mapinfo *milist = 0; + mapinfo *mi; + + sprintf(tmp, "/proc/%d/smaps", pid); + fp = fopen(tmp, "r"); + if(fp == 0) return 0; + + while((mi = read_mapinfo(fp)) != 0) { + /* if not verbose, coalesce mappings from the same entity */ + if(!verbose && milist) { + if((!strcmp(mi->name, milist->name) && (mi->name[0] != '[')) + || !strcmp(mi->name,"[lib_bss]")) { + milist->size += mi->size; + milist->rss += mi->rss; + milist->pss += mi->pss; + milist->shared_clean += mi->shared_clean; + milist->shared_dirty += mi->shared_dirty; + milist->private_clean += mi->private_clean; + milist->private_dirty += mi->private_dirty; + milist->end = mi->end; + free(mi); + continue; + } + } + + mi->next = milist; + milist = mi; + } + fclose(fp); + + return milist; +} + +static int verbose = 0; +static int terse = 0; +static int addresses = 0; + +int show_map(int pid) +{ + mapinfo *milist; + mapinfo *mi; + unsigned shared_dirty = 0; + unsigned shared_clean = 0; + unsigned private_dirty = 0; + unsigned private_clean = 0; + unsigned rss = 0; + unsigned pss = 0; + unsigned size = 0; + + milist = load_maps(pid, verbose); + if(milist == 0) { + fprintf(stderr,"cannot get /proc/smaps for pid %d\n", pid); + return 1; + } + + if(addresses) { + printf("start end shared private object\n"); + printf("-------- -------- -------- -------- ------------------------------\n"); + } else { + printf("virtual shared shared private private\n"); + printf("size RSS PSS clean dirty clean dirty object\n"); + printf("-------- -------- -------- -------- -------- -------- -------- ------------------------------\n"); + } + for(mi = milist; mi; mi = mi->next){ + shared_clean += mi->shared_clean; + shared_dirty += mi->shared_dirty; + private_clean += mi->private_clean; + private_dirty += mi->private_dirty; + rss += mi->rss; + pss += mi->pss; + size += mi->size; + + if(terse && !mi->private_dirty) continue; + + if(addresses) { + printf("%08x %08x %8d %8d %s\n", mi->start, mi->end, + mi->shared_clean + mi->shared_dirty, + mi->private_clean + mi->private_dirty, + mi->name); + } else { + printf("%8d %8d %8d %8d %8d %8d %8d %s\n", mi->size, + mi->rss, + mi->pss, + mi->shared_clean, mi->shared_dirty, + mi->private_clean, mi->private_dirty, + mi->name); + } + } + if(addresses) { + printf("-------- -------- -------- -------- ------------------------------\n"); + printf(" %8d %8d TOTAL\n", + shared_dirty + shared_clean, + private_dirty + private_clean); + } else { + printf("-------- -------- -------- -------- -------- -------- -------- ------------------------------\n"); + printf("%8d %8d %8d %8d %8d %8d %8d TOTAL\n", size, + rss, pss, + shared_clean, shared_dirty, + private_clean, private_dirty); + } + return 0; +} + +int main(int argc, char *argv[]) +{ + int usage = 1; + + for(argc--, argv++; argc > 0; argc--, argv++) { + if(!strcmp(argv[0],"-v")) { + verbose = 1; + continue; + } + if(!strcmp(argv[0],"-t")) { + terse = 1; + continue; + } + if(!strcmp(argv[0],"-a")) { + addresses = 1; + continue; + } + show_map(atoi(argv[0])); + usage = 0; + } + + if(usage) { + fprintf(stderr, + "showmap [-t] [-v] [-c] <pid>\n" + " -t = terse (show only items with private pages)\n" + " -v = verbose (don't coalesce adjacant maps)\n" + " -a = addresses (show virtual memory map)\n" + ); + } + + return 0; +} |