resolve_stack_dump.c
上传用户:romrleung
上传日期:2022-05-23
资源大小:18897k
文件大小:7k
源码类别:
MySQL数据库
开发平台:
Visual C++
- /* Copyright (C) 2000 MySQL AB
- This program is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2 of the License, or
- (at your option) any later version.
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
- You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */
- /* Resolve numeric stack dump produced by mysqld 3.23.30 and later
- versions into symbolic names. By Sasha Pachev <sasha@mysql.com>
- */
- #define DONT_USE_RAID
- #include <my_global.h>
- #include <m_ctype.h>
- #include <my_sys.h>
- #include <m_string.h>
- #include <mysql_version.h>
- #include <errno.h>
- #include <my_getopt.h>
- #define INIT_SYM_TABLE 4096
- #define INC_SYM_TABLE 4096
- #define MAX_SYM_SIZE 128
- #define DUMP_VERSION "1.4"
- #define HEX_INVALID (uchar)255
- typedef ulong my_long_addr_t ; /* at some point, we need to fix configure
- * to define this for us
- */
- typedef struct sym_entry
- {
- char symbol[MAX_SYM_SIZE];
- uchar* addr;
- } SYM_ENTRY;
- static char* dump_fname = 0, *sym_fname = 0;
- static DYNAMIC_ARRAY sym_table; /* how do you like this , static DYNAMIC ? */
- static FILE* fp_dump, *fp_sym = 0, *fp_out;
- static struct my_option my_long_options[] =
- {
- {"help", 'h', "Display this help and exit.",
- 0, 0, 0, GET_NO_ARG, NO_ARG, 0, 0, 0, 0, 0, 0},
- {"version", 'V', "Output version information and exit.",
- 0, 0, 0, GET_NO_ARG, NO_ARG, 0, 0, 0, 0, 0, 0},
- {"symbols-file", 's', "Use specified symbols file.", (gptr*) &sym_fname,
- (gptr*) &sym_fname, 0, GET_STR, REQUIRED_ARG, 0, 0, 0, 0, 0, 0},
- {"numeric-dump-file", 'n', "Read the dump from specified file.",
- (gptr*) &dump_fname, (gptr*) &dump_fname, 0, GET_STR, REQUIRED_ARG,
- 0, 0, 0, 0, 0, 0},
- { 0, 0, 0, 0, 0, 0, GET_NO_ARG, NO_ARG, 0, 0, 0, 0, 0, 0}
- };
- static void verify_sort();
- #include <help_start.h>
- static void print_version(void)
- {
- printf("%s Ver %s Distrib %s, for %s (%s)n",my_progname,DUMP_VERSION,
- MYSQL_SERVER_VERSION,SYSTEM_TYPE,MACHINE_TYPE);
- }
- static void usage()
- {
- print_version();
- printf("MySQL AB, by Sasha Pachevn");
- printf("This software comes with ABSOLUTELY NO WARRANTYnn");
- printf("Resolve numeric stack strace dump into symbols.nn");
- printf("Usage: %s [OPTIONS] symbols-file [numeric-dump-file]n",
- my_progname);
- my_print_help(my_long_options);
- my_print_variables(my_long_options);
- printf("n
- The symbols-file should include the output from: 'nm --numeric-sort mysqld'.n
- The numeric-dump-file should contain a numeric stack trace from mysqld.n
- If the numeric-dump-file is not given, the stack trace is read from stdin.n");
- }
- #include <help_end.h>
- static void die(const char* fmt, ...)
- {
- va_list args;
- va_start(args, fmt);
- fprintf(stderr, "%s: ", my_progname);
- vfprintf(stderr, fmt, args);
- fprintf(stderr, "n");
- va_end(args);
- exit(1);
- }
- static my_bool
- get_one_option(int optid, const struct my_option *opt __attribute__((unused)),
- char *argument __attribute__((unused)))
- {
- switch(optid) {
- case 'V':
- print_version();
- exit(0);
- case '?':
- usage();
- exit(0);
- }
- return 0;
- }
- static int parse_args(int argc, char **argv)
- {
- int ho_error;
- if ((ho_error=handle_options(&argc, &argv, my_long_options, get_one_option)))
- exit(ho_error);
- /*
- The following code is to make the command compatible with the old
- version that required one to use the -n and -s options
- */
- if (argc == 2)
- {
- sym_fname= argv[0];
- dump_fname= argv[1];
- }
- else if (argc == 1)
- {
- if (!sym_fname)
- sym_fname = argv[0];
- else if (!dump_fname)
- dump_fname = argv[0];
- else
- {
- usage();
- exit(1);
- }
- }
- else if (argc != 0 || !sym_fname)
- {
- usage();
- exit(1);
- }
- return 0;
- }
- static void open_files()
- {
- fp_out = stdout;
- fp_dump = stdin;
- if (dump_fname && !(fp_dump = my_fopen(dump_fname, O_RDONLY, MYF(MY_WME))))
- die("Could not open %s", dump_fname);
- /* if name not given, assume stdin*/
- if (!sym_fname)
- die("Please run nm --numeric-sort on mysqld binary that produced stack
- trace dump and specify the path to it with -s or --symbols-file");
- if (!(fp_sym = my_fopen(sym_fname, O_RDONLY, MYF(MY_WME))))
- die("Could not open %s", sym_fname);
- }
- static uchar hex_val(char c)
- {
- uchar l;
- if (my_isdigit(&my_charset_latin1,c))
- return c - '0';
- l = my_tolower(&my_charset_latin1,c);
- if (l < 'a' || l > 'f')
- return HEX_INVALID;
- return (uchar)10 + ((uchar)c - (uchar)'a');
- }
- static my_long_addr_t read_addr(char** buf)
- {
- uchar c;
- char* p = *buf;
- my_long_addr_t addr = 0;
- while((c = hex_val(*p++)) != HEX_INVALID)
- addr = (addr << 4) + c;
- *buf = p;
- return addr;
- }
- static int init_sym_entry(SYM_ENTRY* se, char* buf)
- {
- char* p, *p_end;
- se->addr = (uchar*)read_addr(&buf);
- if (!se->addr)
- return -1;
- while (my_isspace(&my_charset_latin1,*buf++))
- /* empty */;
- while (my_isspace(&my_charset_latin1,*buf++))
- /* empty - skip more space */;
- --buf;
- /* now we are on the symbol */
- for (p = se->symbol, p_end = se->symbol + sizeof(se->symbol) - 1;
- *buf != 'n' && *buf && p < p_end; ++buf,++p)
- *p = *buf;
- *p = 0;
- if (!strcmp(se->symbol, "gcc2_compiled."))
- return -1;
- return 0;
- }
- static void init_sym_table()
- {
- char buf[512];
- if (my_init_dynamic_array(&sym_table, sizeof(SYM_ENTRY), INIT_SYM_TABLE,
- INC_SYM_TABLE))
- die("Failed in my_init_dynamic_array() -- looks like out of memory problem");
- while (fgets(buf, sizeof(buf), fp_sym))
- {
- SYM_ENTRY se;
- if (init_sym_entry(&se, buf))
- continue;
- if (insert_dynamic(&sym_table, (gptr)&se))
- die("insert_dynamic() failed - looks like we are out of memory");
- }
- verify_sort();
- }
- static void clean_up()
- {
- delete_dynamic(&sym_table);
- }
- static void verify_sort()
- {
- uint i;
- uchar* last = 0;
- for (i = 0; i < sym_table.elements; i++)
- {
- SYM_ENTRY se;
- get_dynamic(&sym_table, (gptr)&se, i);
- if (se.addr < last)
- die("sym table does not appear to be sorted, did you forget
- --numeric-sort arg to nm? trouble addr = %p, last = %p", se.addr, last);
- last = se.addr;
- }
- }
- static SYM_ENTRY* resolve_addr(uchar* addr, SYM_ENTRY* se)
- {
- uint i;
- get_dynamic(&sym_table, (gptr)se, 0);
- if (addr < se->addr)
- return 0;
- for (i = 1; i < sym_table.elements; i++)
- {
- get_dynamic(&sym_table, (gptr)se, i);
- if (addr < se->addr)
- {
- get_dynamic(&sym_table, (gptr)se, i - 1);
- return se;
- }
- }
- return se;
- }
- static void do_resolve()
- {
- char buf[1024], *p;
- while (fgets(buf, sizeof(buf), fp_dump))
- {
- p = buf;
- /* skip space */
- while (my_isspace(&my_charset_latin1,*p))
- ++p;
- if (*p++ == '0' && *p++ == 'x')
- {
- SYM_ENTRY se ;
- uchar* addr = (uchar*)read_addr(&p);
- if (resolve_addr(addr, &se))
- fprintf(fp_out, "%p %s + %dn", addr, se.symbol,
- (int) (addr - se.addr));
- else
- fprintf(fp_out, "%p (?)n", addr);
- }
- else
- {
- fputs(buf, fp_out);
- continue;
- }
- }
- }
- int main(int argc, char** argv)
- {
- MY_INIT(argv[0]);
- parse_args(argc, argv);
- open_files();
- init_sym_table();
- do_resolve();
- clean_up();
- return 0;
- }