thread.hxx File Reference

#include <cosmos/dso_export.h>
#include <cosmos/proc/types.hxx>
#include <cosmos/utils.hxx>

Go to the source code of this file.

Enumerations
enum class	ThreadID : pid_t { SELF = 0 }

Functions
ProcessID	cosmos::as_pid (const ThreadID id)
	Return the ProcessID representation of the given thread ID.
ThreadID	cosmos::thread::get_tid ()
	Returns the Linux low-level thread ID of the caller.
bool	cosmos::thread::is_main_thread ()
	Returns whether the calling thread is this process's main thread.

Detailed Description

This header contains low level Linux thread functionality (i.e. not pthread related).

Definition in file thread.hxx.

Enumeration Type Documentation

ThreadID

enum class cosmos::ThreadID : pid_t

strong

Definition at line 17 of file thread.hxx.

                    : pid_t {
        SELF = 0
};

Function Documentation

as_pid()

ProcessID cosmos::as_pid ( const ThreadID id )

inline

Return the ProcessID representation of the given thread ID.

Thread IDs are treated very similar to process IDs on Linux. For extra type safety and for being explicit libcosmos uses a strong unique type ThreadID, which can be explicitly casted into a ProcessID, if required.

Definition at line 27 of file thread.hxx.

                                           {
        return ProcessID{to_integral(id)};
}

get_tid()

ThreadID COSMOS_API cosmos::thread::get_tid

(

)

Returns the Linux low-level thread ID of the caller.

Definition at line 11 of file thread.cxx.

                   {
        // glibc doesn't come with a wrapper for this
        return static_cast<ThreadID>(syscall(SYS_gettid));
}

is_main_thread()

bool COSMOS_API cosmos::thread::is_main_thread

(

)

Returns whether the calling thread is this process's main thread.

Definition at line 16 of file thread.cxx.

                      {
        return as_pid(get_tid()) == proc::get_own_pid();
}