C++ exe程序内存占用分析

2024-08-05

本文作者原创，首发在本博客；CSDN 上的同名文章已标注为转载并回链到本页：https://blog.csdn.net/qq_30220519/article/details/140937199

编译

$ git clone https://github.com/google/bloaty
$ cd bloaty
$ cmake -B build -G Ninja -S .
$ cmake --build build
$ cmake --build build --target install

命令

bloaty.exe	--list-sources

rmembers       the .o files in a .a file
compileunits    source file for the .o file (translation unit). requires debug info.
inputfiles      the filename specified on the Bloaty command-line
inlines         source line/file where inlined code came from.  requires debug info.
sections        object file section
segments        load commands in the binary
symbols         symbols from symbol table (configure demangling with --demangle)
rawsymbols      unmangled symbols
fullsymbols     full demangled symbols
shortsymbols    short demangled symbols


bloaty.exe	--help

USAGE: bloaty [OPTION]... FILE... [-- BASE_FILE...]

Options:

  --csv              Output in CSV format instead of human-readable.
  --tsv              Output in TSV format instead of human-readable.
  -c FILE            Load configuration from <file>.
  -d SOURCE,SOURCE   Comma-separated list of sources to scan.
  --debug-file=FILE  Use this file for debug symbols and/or symbol table.
  -C MODE            How to demangle symbols.  Possible values are:
  --demangle=MODE      --demangle=none   no demangling, print raw symbols
                       --demangle=short  demangle, but omit arg/return types
                       --demangle=full   print full demangled type
                     The default is --demangle=short.
  --disassemble=FUNCTION
                     Disassemble this function (EXPERIMENTAL)
  --domain=DOMAIN    Which domains to show.  Possible values are:
                       --domain=vm
                       --domain=file
                       --domain=both (the default)
  -n NUM             How many rows to show per level before collapsing
                     other keys into '[Other]'.  Set to '0' for unlimited.
                     Defaults to 20.
  -s SORTBY          Whether to sort by VM or File size.  Possible values
                     are:
                       -s vm
                       -s file
                       -s both (the default: sorts by max(vm, file)).
  -w                 Wide output; don't truncate long labels.
  --help             Display this message and exit.
  --list-sources     Show a list of available sources and exit.
  --source-filter=PATTERN
                     Only show keys with names matching this pattern.

Options for debugging Bloaty:

  --debug-vmaddr=ADDR
  --debug-fileoff=OFF
                     Print extended debugging information for the given
                     VM address and/or file offset.
  -v                 Verbose output.  Dumps warnings encountered during
                     processing and full VM/file maps at the end.
                     Add more v's (-vv, -vvv) for even more.

测试

#include <iostream>

const char* data = "而此时是ii四十九而此时是ii四十九而此时是ii四十九而此时是ii四十九而此时是ii四十九而此时是ii四十九而此时是ii四十九而此时是ii四十九而此时是ii四十九而此时是ii四十九";

int main() {
	printf("test main\n");
}

1 2	g++ -g main.cpp -o my_program.exe bloaty my_program.exe

配置

1	bloaty -c bloaty_package.bloaty my_program.exe

bloaty_package.bloaty

custom_data_source: {
  name: "bloaty_package"
  base_data_source: "compileunits"

  rewrite: {
    pattern: "^(\\.\\./)?src"
    replacement: "src"
  }
  rewrite: {
    pattern: "^(\\.\\./)?(third_party/\\w+)"
    replacement: "\\2"
  }
}

参考

GitHub - google/bloaty: Bloaty: a size profiler for binaries

C/C++ Native 包大小测量_bloaty-CSDN博客

编译

命令

测试

配置

参考

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