ClickHouse/dbms/src/Common/setThreadName.cpp
2019-02-10 20:12:22 +03:00

63 lines
1.6 KiB
C++

#include <pthread.h>
#if defined(__APPLE__)
#elif defined(__FreeBSD__)
#include <pthread_np.h>
#else
#include <sys/prctl.h>
#endif
#include <cstring>
#include <Common/Exception.h>
#include <Common/setThreadName.h>
namespace DB
{
namespace ErrorCodes
{
extern const int PTHREAD_ERROR;
}
}
void setThreadName(const char * name)
{
#ifndef NDEBUG
if (strlen(name) > 15)
throw DB::Exception("Thread name cannot be longer than 15 bytes", DB::ErrorCodes::PTHREAD_ERROR);
#endif
#if defined(__FreeBSD__)
pthread_set_name_np(pthread_self(), name);
return;
#elif defined(__APPLE__)
if (0 != pthread_setname_np(name))
#else
if (0 != prctl(PR_SET_NAME, name, 0, 0, 0))
#endif
DB::throwFromErrno("Cannot set thread name with prctl(PR_SET_NAME, ...)", DB::ErrorCodes::PTHREAD_ERROR);
}
std::string getThreadName()
{
std::string name(16, '\0');
#if defined(__APPLE__)
if (pthread_getname_np(pthread_self(), name.data(), name.size()))
throw DB::Exception("Cannot get thread name with pthread_getname_np()", DB::ErrorCodes::PTHREAD_ERROR);
#elif defined(__FreeBSD__)
// TODO: make test. freebsd will have this function soon https://freshbsd.org/commit/freebsd/r337983
// if (pthread_get_name_np(pthread_self(), name.data(), name.size()))
// throw DB::Exception("Cannot get thread name with pthread_get_name_np()", DB::ErrorCodes::PTHREAD_ERROR);
#else
if (0 != prctl(PR_GET_NAME, name.data(), 0, 0, 0))
DB::throwFromErrno("Cannot get thread name with prctl(PR_GET_NAME)", DB::ErrorCodes::PTHREAD_ERROR);
#endif
name.resize(std::strlen(name.data()));
return name;
}