为线程设置名字

http://blog.csdn.net/penzchan/article/details/10239869

 

 

在linux下开发的多线程系统中, 每个线程的调试和监控一直比较麻烦, 无法精准定位, 现在有了解决办法了.

 int prctl(int option, unsigned long arg2, unsigned long arg3,  unsigned long arg4, unsigned long arg5);

PR_SET_NAME (since Linux 2.6.9)
Set the process name for the calling process, using the value in he location pointed to by (char *) arg2.
The name can be up to 16 bytes long, and should  be  null-terminated  if  it  contains fewer bytes.

PR_GET_NAME (since Linux 2.6.11)
Return  the  process name for the calling process, in the buffer pointed to by (char*) arg2.
The buffer should allow space  for up  to  16 bytes; the returned string will be null-terminated if it is
shorter than that.

 int prctl(int option, unsigned long arg2, unsigned long arg3,  unsigned long arg4, unsigned long arg5);

PR_SET_NAME (since Linux 2.6.9)
Set the process name for the calling process, using the value in he location pointed to by (char *) arg2.  
The name can be up to 16 bytes long, and should  be  null-terminated  if  it  contains fewer bytes.

PR_GET_NAME (since Linux 2.6.11)
Return  the  process name for the calling process, in the buffer pointed to by (char*) arg2.  
The buffer should allow space  for up  to  16 bytes; the returned string will be null-terminated if it is 
shorter than that.

函数实现:

#include <sys/prctl.h>
int set_thread_name(const char* name)
{
    if (!name) return -1;
    prctl(PR_SET_NAME, name, 0, 0, 0);
    return 0;
}

#include <sys/prctl.h>
int set_thread_name(const char* name)
{
	if (!name) return -1;
	prctl(PR_SET_NAME, name, 0, 0, 0);
	return 0;
}