a85b5759f3
These files were pulled from the 1.6.3 release tarball. This new version builds against OpenSSL version 1.1 which will be the default in the new Debian Stable which is due to be released RealSoonNow (tm).
250 lines
6.4 KiB
C
250 lines
6.4 KiB
C
/*
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* testcode/memstats.c - debug tool to show memory allocation statistics.
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*
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* Copyright (c) 2007, NLnet Labs. All rights reserved.
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*
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* This software is open source.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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*
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* Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* Neither the name of the NLNET LABS nor the names of its contributors may
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* be used to endorse or promote products derived from this software without
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* specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
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* TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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/**
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* \file
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*
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* This program reads a log file and prints the memory allocation summed
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* up.
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*/
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#include "config.h"
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#include "util/log.h"
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#include "util/rbtree.h"
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#include "util/locks.h"
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#include "util/fptr_wlist.h"
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#include <sys/stat.h>
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/**
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* The allocation statistics block
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*/
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struct codeline {
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/** rbtree node */
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rbnode_type node;
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/** the name of the file:linenumber */
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char* codeline;
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/** the name of the function */
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char* func;
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/** number of bytes allocated */
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uint64_t alloc;
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/** number of bytes freed */
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uint64_t free;
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/** number allocations and frees */
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uint64_t calls;
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};
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/** print usage and exit */
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static void
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usage(void)
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{
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printf("usage: memstats <logfile>\n");
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printf("statistics are printed on stdout.\n");
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exit(1);
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}
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/** match logfile line to see if it needs accounting processing */
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static int
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match(char* line)
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{
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/* f.e.:
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* [1187340064] unbound[24604:0] info: ul/rb.c:81 r_create malloc(12)
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* 0123456789 123456789 123456789 123456789
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* But now also:
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* Sep 16 15:18:20 unbound[1:0] info: ul/nh.c:143 memdup malloc(11)
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*/
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if(strlen(line) < 32) /* up to 'info: ' */
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return 0;
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if(!strstr(line, " info: "))
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return 0;
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if(strstr(line, "info: stat "))
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return 0; /* skip the hex dumps */
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if(strstr(line+30, "malloc("))
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return 1;
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else if(strstr(line+30, "calloc("))
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return 1;
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/* skip reallocs */
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return 0;
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}
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/** find or alloc codeline in tree */
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static struct codeline*
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get_codeline(rbtree_type* tree, char* key, char* func)
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{
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struct codeline* cl = (struct codeline*)rbtree_search(tree, key);
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if(!cl) {
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cl = calloc(1, sizeof(*cl));
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if(!cl) return 0;
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cl->codeline = strdup(key);
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if(!cl->codeline) return 0;
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cl->func = strdup(func);
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if(!cl->func) return 0;
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cl->alloc = 0;
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cl->node.key = cl->codeline;
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(void)rbtree_insert(tree, &cl->node);
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}
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return cl;
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}
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/** read up the malloc stats */
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static void
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read_malloc_stat(char* line, rbtree_type* tree)
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{
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char codeline[10240];
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char name[10240];
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int skip = 0;
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long num = 0;
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struct codeline* cl = 0;
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line = strstr(line, "info: ")+6;
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if(sscanf(line, "%s %s %n", codeline, name, &skip) != 2) {
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printf("%s\n", line);
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fatal_exit("unhandled malloc");
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}
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if(sscanf(line+skip+7, "%ld", &num) != 1) {
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printf("%s\n%s\n", line, line+skip+7);
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fatal_exit("unhandled malloc");
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}
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cl = get_codeline(tree, codeline, name);
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if(!cl)
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fatal_exit("alloc failure");
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cl->alloc += num;
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cl->calls ++;
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}
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/** read up the calloc stats */
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static void
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read_calloc_stat(char* line, rbtree_type* tree)
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{
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char codeline[10240];
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char name[10240];
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int skip = 0;
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long num = 0, sz = 0;
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struct codeline* cl = 0;
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line = strstr(line, "info: ")+6;
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if(sscanf(line, "%s %s %n", codeline, name, &skip) != 2) {
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printf("%s\n", line);
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fatal_exit("unhandled calloc");
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}
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if(sscanf(line+skip+7, "%ld, %ld", &num, &sz) != 2) {
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printf("%s\n%s\n", line, line+skip+7);
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fatal_exit("unhandled calloc");
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}
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cl = get_codeline(tree, codeline, name);
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if(!cl)
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fatal_exit("alloc failure");
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cl->alloc += num*sz;
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cl->calls ++;
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}
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/** get size of file */
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static off_t
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get_file_size(const char* fname)
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{
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struct stat s;
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if(stat(fname, &s) < 0) {
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fatal_exit("could not stat %s: %s", fname, strerror(errno));
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}
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return s.st_size;
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}
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/** read the logfile */
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static void
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readfile(rbtree_type* tree, const char* fname)
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{
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off_t total = get_file_size(fname);
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off_t done = (off_t)0;
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int report = 0;
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FILE* in = fopen(fname, "r");
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char buf[102400];
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if(!in)
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fatal_exit("could not open %s: %s", fname, strerror(errno));
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printf("Reading %s of size " ARG_LL "d\n", fname, (long long)total);
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while(fgets(buf, 102400, in)) {
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buf[102400-1] = 0;
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done += (off_t)strlen(buf);
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/* progress count */
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if((int)(((double)done / (double)total)*100.) > report) {
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report = (int)(((double)done / (double)total)*100.);
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fprintf(stderr, " %d%%", report);
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}
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if(!match(buf))
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continue;
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else if(strstr(buf+30, "malloc("))
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read_malloc_stat(buf, tree);
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else if(strstr(buf+30, "calloc("))
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read_calloc_stat(buf, tree);
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else {
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printf("%s\n", buf);
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fatal_exit("unhandled input");
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}
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}
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fprintf(stderr, " done\n");
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fclose(in);
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}
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/** print memory stats */
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static void
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printstats(rbtree_type* tree)
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{
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struct codeline* cl;
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uint64_t total = 0, tcalls = 0;
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RBTREE_FOR(cl, struct codeline*, tree) {
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printf("%12lld / %8lld in %s %s\n", (long long)cl->alloc,
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(long long)cl->calls, cl->codeline, cl->func);
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total += cl->alloc;
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tcalls += cl->calls;
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}
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printf("------------\n");
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printf("%12lld / %8lld total in %ld code lines\n", (long long)total,
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(long long)tcalls, (long)tree->count);
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printf("\n");
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}
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/** main program */
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int main(int argc, const char* argv[])
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{
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rbtree_type* tree = 0;
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log_init(NULL, 0, 0);
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if(argc != 2) {
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usage();
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}
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tree = rbtree_create(codeline_cmp);
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if(!tree)
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fatal_exit("alloc failure");
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readfile(tree, argv[1]);
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printstats(tree);
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return 0;
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}
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