在使用GNU编译器进行编译期间，在Linux中更改C ++应用程序的堆栈大小 [英] Change stack size for a C++ application in Linux during compilation with GNU compiler

问题描述

在使用 g ++ 编译C ++程序期间，OSX使用

  LD_FLAGS = -Wl，-stack_size，0x100000000 
  

但是在SUSE Linux中，我经常会遇到如下错误：

$ b

x86_64-suse-linux / bin / ld：无法识别的选项'--stack'


以及类似的。

我知道可以使用

  ulimit -s无限
  

但这并不好，因为并非所有用户都能这样做。

如何通过GCC为单个应用程序增加Linux中的堆栈大小？

>您可以使用 setrlimit 以编程方式设置堆栈大小，例如

  #include  
 int main（int argc，char ** argv）
 {
 const rlim_t kStackSize = 16 * 1024 * 1024; //最小堆栈大小= 16 MB 
 struct rlimit rl; 
 int结果; 
 
 result = getrlimit（RLIMIT_STACK，& rl）; 
 if（result == 0）
 {
 if（rl.rlim_cur< kStackSize）
 {
 rl.rlim_cur = kStackSize; 
 result = setrlimit（RLIMIT_STACK，& rl）; 
 if（result！= 0）
 {
 fprintf（stderr，setrlimit returned result =％d\\\
，result）; 
} 
} 
} 
 
 // ... 
 
 return 0; 
} 
  

注意：即使使用此方法增加堆栈大小，也不应声明大本地变量在 main（）本身中，因为只要输入 main（） ，在 getrlimit / setrlimit 代码之前有机会更改堆栈大小。因此，任何大的局部变量只能在堆栈大小成功增加后才能在 main（）中调用的函数中定义。

In OSX during C++ program compilation with g++ I use

LD_FLAGS= -Wl,-stack_size,0x100000000

but in SUSE Linux I constantly get errors like:

x86_64-suse-linux/bin/ld: unrecognized option '--stack'

and similar.

I know that it is possible to use

ulimit -s unlimited

but this is not nice as not always can a single user do that.

How can I increase the stack size in Linux with GCC for a single application?

解决方案

You can set the stack size programmatically with setrlimit, e.g.

#include <sys/resource.h>

int main (int argc, char **argv)
{
    const rlim_t kStackSize = 16 * 1024 * 1024;   // min stack size = 16 MB
    struct rlimit rl;
    int result;

    result = getrlimit(RLIMIT_STACK, &rl);
    if (result == 0)
    {
        if (rl.rlim_cur < kStackSize)
        {
            rl.rlim_cur = kStackSize;
            result = setrlimit(RLIMIT_STACK, &rl);
            if (result != 0)
            {
                fprintf(stderr, "setrlimit returned result = %d\n", result);
            }
        }
    }

    // ...

    return 0;
}

Note: even when using this method to increase stack size you should not declare large local variables in main() itself, since you may well get a stack overflow as soon as you enter main(), before the getrlimit/setrlimit code has had a chance to change the stack size. Any large local variables should therefore be defined only in functions which are subsequently called from main(), after the stack size has successfully been increased.

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