CODEWITHSUNDEEP
c++windowswinapithread-priority
rsk82
rsk82

Reputation: 29377

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

I mean this command:

system("myprogram.exe");

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

Upvotes: 1

Views: 465

Answers (3)

dyasta
dyasta

Reputation: 2191

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.

Upvotes: 1

João Marcelo Brito
João Marcelo Brito

Reputation: 652

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

Upvotes: 2

hmjd
hmjd

Reputation: 121961

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.

Upvotes: 3

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