dmstack/dmstack/config.cpp at main · DamengDB/dmstack · GitHub

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#include "config.h"

#include "log/log.h"

#include <cstdio>

#ifndef _WIN32

#include <getopt.h>

#endif // !_WIN32

namespace config

{

Config g_config;

void show_version()

{

printf("dmstack (1.1.1)\n");

printf("REVISION: %s\n", REVISION);

printf("BUILD_TIME: %s %s\n", __DATE__, __TIME__);

}

void usage_exit()

{

#ifndef _WIN32

printf("Usage: \n");

printf(" dmstack [option(s)] [pid]\n\n");

printf("Examples: \n");

printf(" # Capture and parse all thread stacks of process $pid\n");

printf(" dmstack $pid\n\n");

printf(" # Read stack traces from stack.txt and reformat according to the selected options\n");

printf(" dmstack --input stack.txt\n");

printf("\nOptions: \n");

//printf(" --format <expanded|compact> Choose the output style. [default: expanded]\n");

//printf(" expanded Multi-line, human-readable. One frame per line\n");

//printf(" with a #index (#0 is the top-most frame):\n");

//printf(" Thread(tname-tid)\n");

//printf(" #0 0x.. in f0 from ..\n");

//printf(" #1 0x.. in f1 from ..\n");

//printf(" #2 0x.. in f2 from ..\n");

//printf(" #3 0x.. in f3 from ..\n");

//printf(" compact Single-line, machine-friendly. One thread per line,\n");

//printf(" frames joined by commas; same order as #0,#1,...:\n");

//printf(" Thread(tname-tid) f0,f1,f2,...\n\n");

printf(" -f, --format-compact Shorthand for compact output. One thread per line, frames joined by commas.\n");

printf(" -l, --log-level <LEVEL> Log level, LEVEL=DEBUG|INFO|WARN|ERROR\n");

printf(" -v, --version Show version information.\n");

printf(" --help Show help information.\n");

//printf("\nInput / output: \n");

printf(" --input <FILE> Specify the input file. [default: null]\n");

printf(" This input file must contain raw stack traces captured \n");

printf(" without extra options.(using command \"dmstack <pid>\")\n");

//printf(" --output <FILE> Specify where to write the formatted stack traces.\n");

//printf(" Provide a file path to write the output to that file; use \" - \" to\n");

//printf(" write to stdout (the terminal).\n\n");

//printf("\nAggregation:\n");

printf(" -a, --aggregate Group identical backtraces and output one entry per group\n");

printf(" with occurrence counts.\n");

printf(" -r, --reverse Reverse the aggregation sort order (ascending <--> descending).\n");

printf(" Applies only when --aggregate is active.\n");

//printf(" --stats Emit parsing/aggregation stats (frames, threads, groups, dropped)\n");

//printf(" to stderr.\n");

//printf("\nSymbolization:\n");

printf(" -b, --binary-path <PATH> Search path for binaries/executables.\n");

printf(" -s, --symbol-path <PATH> Search path for separate debug symbol files.\n");

printf(" --search-system-symbols Also search system debug locations (/usr/lib/.build-id,/usr/lib/debug).\n");

//printf("\nParsing & filtering:\n");

printf(" -t, --thread-only Process a single thread only (the selected/current one).\n");

printf(" -i, --min-depth <N> Output only threads whose stack depth ≥ N. [Default: 0]\n");

printf(" -c, --priority-threads <PATTERNS> List of space-separated patterns; matching threads are printed first.\n");

//printf(" --frames <N> Output only the first N frames; 0 = unlimited. [Default: 0]\n");

//printf(" --skip <N> Skip the top N frames. [Default: 0]\n");

//printf(" --strip-prefix <PATH> Strip this path prefix when printing file paths.\n");

//printf(" --keep-thread <REGEX> Keep only threads whose name/ID matches (regex).\n");

//printf(" --exclude-thread <REGEX> Drop threads whose name/ID matches (regex).\n");

//printf(" --keep-path <REGEX> Keep frames whose library/path matches (regex).\n");

//printf(" --exclude-path <REGEX> Drop frames whose library/path matches (regex).\n");

//printf(" --merge-adjacent Coalesce adjacent duplicate frames into “×N”.\n");

//printf("\nPrinting details:\n");

printf(" -n, --no-parse Print addresses only (no symbols/paths/files).\n");

printf(" -h, --hide-thread <0|1|2> Hide thread header fields(thread name and id), where 0=none, 1=id, 2=all.\n");

printf(" [Default: 0]\n\n");

//printf(" --hide-addr Hide addresses. Applies only when --format expanded is active.\n");

//printf(" --hide-file Hide source file/line.Applies only when --format expanded is active.\n");

//printf(" -l, --log_level=[DEBUG|INFO|WARN|ERROR] : Log level\n");

//printf(" -n, --no_parse : Output address only\n");

//printf(" -a, --aggregate : Aggregate backtrace\n");

//printf(" -b, --binary_path=next_path : Binary next_path\n");

//printf(" -s, --symbol_path=next_path : Symbol next_path\n");

//printf(" -t, --thread_only : Process single thread only\n");

//printf(" -f, --format_compact : Output function name only\n");

//printf(" -h, --hide_thread=num : Output without thread id and name, optional value:0,1,2\n");

//printf(" -i, --ingore_level=num : Output thread stack excceed num only\n");

//printf(" -c, --priority-threads : Output cared thread first, input like \"str1 str2\"\n");

//printf(" -r, --reverse : Change ascending/descending of the aggregate\n");

//printf(" --search_system_symbol : Search symbols in /usr/lib/debug\n");

//printf(" --input <FILE> : Input file. [default: null]\n");

//printf(" --output <FILE> : Output file. [default: console]\n");

//printf(" -v, --version : Output version number\n");

#else

printf("Usage: \n");

printf(" dmstack [option(s)] [pid]\n\n");

printf("Examples: \n");

printf(" # Read stack traces from stack.txt and reformat according to the selected options\n");

printf(" dmstack --input stack.txt\n\n");

printf("Options: \n");

printf(" --input <FILE> Specify the input file. [default: null]\n");

printf(" This input file must contain raw stack traces captured \n");

printf(" without extra options.(using command \"dmstack <pid>\")\n");

#endif // !_WIN32

exit(1);

}

#ifdef _WIN32

enum

{

no_argument = 0,

required_argument = 1,

optional_argument = 2

};

struct option

{

const char* name;

int has_arg;

int* flag;

int val;

};

char* optarg = NULL;

int optind = 1;

int opterr = 1;

int optopt = '?';

// 用于处理 -abc 这样的短选项簇

static char* s_nextchar = NULL;

// 查询短选项是否需要参数

static int shortopt_need_arg(const char* optstring, int c)

{

if (!optstring)

{

return 0;

}

for (const char* p = optstring; *p; ++p)

{

if (*p == c)

{

return (p[1] == ':');

}

return 0;

}

// 处理长选项：返回 <0 表示未处理；返回值同 getopt_long 规范

static int handle_longopt(int argc, char* const argv[],

const char* optstring, const struct option* longopts, int* longindex)

{

const char* arg = argv[optind];

if (strncmp(arg, "--", 2) != 0)

{

return -2;

}

const char* name = arg + 2;

const char* eq = strchr(name, '=');

char* value = NULL;

// 精确匹配（不支持前缀缩写，避免歧义）

int match = -1;

if (!longopts)

{

optind++;

return '?';

}

size_t name_len = eq ? (size_t)(eq - name) : strlen(name);

for (int i = 0; longopts[i].name; ++i)

{

if (strlen(longopts[i].name) == name_len &&

strncmp(longopts[i].name, name, name_len) == 0)

{

match = i;

break;

}

if (match < 0)

{

// 未知长选项

optopt = 0;

optind++;

return '?';

}

if (eq)

{

value = (char*)eq + 1;

}

const struct option* o = &longopts[match];

if (longindex)

{

*longindex = match;

}

// 处理参数需求

if (o->has_arg == required_argument)

{

if (value)

{

optarg = value;

}

else if (optind + 1 < argc)

{

optarg = argv[optind + 1];

optind++;

}

else

{

optopt = o->val;

optind++;

return '?';

}

else if (o->has_arg == optional_argument)

{

optarg = value; // 可能为 NULL

}

else

{

// no_argument

if (value)

{

// 不应带 =value，按错误处理

optopt = o->val;

optind++;

return '?';

}

optarg = NULL;

}

optind++; // 消费当前 --name[=value]

if (o->flag)

{

*(o->flag) = o->val;

return 0; // GNU 语义：flag 模式返回 0

}

return o->val;

}

int getopt_long(int argc, char* const argv[], const char* optstring,

const struct option* longopts, int* longindex)

{

optarg = NULL;

// 如果当前没有在处理短选项簇，拉取下一个 argv

if (!s_nextchar || *s_nextchar == '\0')

{

if (optind >= argc)

{

return -1;

}

const char* arg = argv[optind];

if (strcmp(arg, "--") == 0)

{

// 显式终止

optind++;

return -1;

}

if (arg[0] != '-' || arg[1] == '\0')

{

// 非选项，停止解析（保持与 GNU 行为一致）

return -1;

}

if (arg[0] == '-' && arg[1] == '-')

{

// 长选项

return handle_longopt(argc, argv, optstring, longopts, longindex);

}

// 短选项簇

s_nextchar = (char*)arg + 1;

}

// 处理短选项（可能是簇的一部分）

int c = (unsigned char)*s_nextchar++;

int need_arg = shortopt_need_arg(optstring, c);

if (!strchr(optstring ? optstring : "", c))

{

// 未知短选项

optopt = c;

if (!*s_nextchar)

{

optind++;

s_nextchar = NULL;

}

return '?';

}

if (need_arg)

{

if (*s_nextchar)

{

// -lINFO

optarg = s_nextchar;

optind++;

s_nextchar = NULL;

}

else if (optind + 1 < argc)

{

// -l INFO

optarg = argv[optind + 1];

optind += 2;

s_nextchar = NULL;

}

else

{

// 参数缺失

optopt = c;

optind++;

s_nextchar = NULL;

return '?';

}

else

{

// 无参数

if (!*s_nextchar)

{

optind++;

s_nextchar = NULL;

}

return c;

}

#endif // _WIN32

void get_options(int argc, char** argv)

{

int c;

struct option long_options[] =

{

{"?", no_argument, NULL, '?'},

{"version", no_argument, NULL, 'v'},

{"aggregate", no_argument, NULL, 'a'},

{"no-parse", no_argument, NULL, 'n'},

{"no-lineno", no_argument, NULL, 'o'},

{"format-compact", no_argument, NULL, 'f'},

{"reverse", no_argument, NULL, 'r'},

{"hide-thread", required_argument, NULL, 'h'},

{"log-level", required_argument, NULL, 'l'},

{"binary-path", required_argument, NULL, 'b'},

{"symbol-path", required_argument, NULL, 's'},

{"priority-threads", required_argument, NULL, 'c'},

{"min-depth", required_argument, NULL, 'i'},

{"input", required_argument, NULL, OPT_INPUT_PATH},

{"output", required_argument, NULL, OPT_OUTPUT_PATH},

{"bfd-threads", required_argument, NULL, OPT_BFD_THREADS},

{"search-system-symbols", no_argument, NULL, OPT_SEARCH_SYMBOL},

{NULL, 0, NULL, 0}

};

g_config = { 0 };

g_config.log_level = 3; // ERROR

if (argc == 1)

{

usage_exit();

}

while ((c = getopt_long(argc, argv, "?onavtfrh:l:b:s:c:i:", long_options, (int*)0))

!= EOF)

{

switch (c)

{

case '?':

{

usage_exit();

break;

}

case 'l':

{

g_config.log_level = LOG_LEVEL(optarg);

break;

}

case OPT_SEARCH_SYMBOL:

{

g_config.search_symbols = true;

break;

}

case OPT_BFD_THREADS:

{

g_config.bfd_threads = atoi(optarg);

LOG(INFO, "input bfd_threads: %d", g_config.bfd_threads);

break;

}

case 'r':

{

g_config.reverse = true;

break;

}

case 'f':

{

g_config.format_compact = true;

break;

}

case 'h':

{

g_config.hide_thread = atoi(optarg);

LOG(INFO, "input hide_thread: %d", g_config.hide_thread);

break;

}

case 'b':

{

g_config.binary_path = optarg;

LOG(INFO, "input binary-path: %s", g_config.binary_path.c_str());

break;

}

case 's':

{

g_config.symbol_path = optarg;

LOG(INFO, "input symbol-path: %s", g_config.symbol_path.c_str());

break;

}

case OPT_INPUT_PATH:

{

g_config.input = optarg;

LOG(INFO, "input input: %s", g_config.input.c_str());

break;

}

case OPT_OUTPUT_PATH:

{

g_config.output = optarg;

LOG(INFO, "input output: %s", g_config.output.c_str());

break;

}

case 'i':

{

g_config.min_depth = atoi(optarg);

LOG(INFO, "input min-depth: %d", g_config.min_depth);

break;

}

case 'c':

{

g_config.tnames = optarg;

LOG(INFO, "input priority-threads: %s", g_config.tnames.c_str());

break;

}

case 'n':

{

g_config.no_parse = true;

break;

}

case 'a':

{

g_config.aggregate = true;

break;

}

case 'o':

{

g_config.no_lineno = true;

break;

}

case 'v':

{

show_version();

exit(0);

break;

}

case 't':

{

g_config.thread_only = true;

break;

}

default:

{

usage_exit();

break;

}

if (argc > optind)

{

g_config.pid = atoi(argv[optind]);

LOG(INFO, "input pid: %d", g_config.pid);

}

dmstack/dmstack/config.cpp at main · DamengDB/dmstack · GitHub

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