is there a way to execute system command with given priority?

Question

I mean this command:

system("myprogram.exe");

Is there a way to make it run for example in below-normal priority mode ?

Answer 1

The WINAPI has a function called CreateProcess() that allows the specification of a priority:

dwCreationFlags [in]

    The flags that control the priority class and the creation of the process.
For a list of values, see Process Creation Flags.

    This parameter also controls the new process's priority class, which
is used to determine the scheduling priorities of the process's threads.
For a list of values, see GetPriorityClass. If none of the priority class
flags is specified, the priority class defaults to NORMAL_PRIORITY_CLASS
unless the priority class of the creating process is IDLE_PRIORITY_CLASS
or BELOW_NORMAL_PRIORITY_CLASS. In this case, the child process receives
the default priority class of the calling process.

Answer 2

You can use the SetThreadPriority() on the main thread of the application

Answer 3

I think this is a fuller answer:

Three different options (these aren't steps):

• During CreateProcess, specify the process priority CLASS (individual thread priorities are derived from the process priority class).
• After starting of the application, use SetPriorityClass. This lets you change the priority CLASS at will.
• Change individual thread priorities via SetThreadPriority. These go up and down in accordance with the 'base' priority CLASS.

For more information, see MSDN.