PAPI_detach(3)

📦
version 7.2.0 · 8 versions
, in nixos 26.05, nixpkgs unstable, opensuse-leap 16.0, ubuntu resolute, ubuntu stonking

okay so welcome to the PAPI manual’s PAPI_detach(3) page, bestie 💖 this one is short but iconic, and we are keeping every single detail, no cap.

💅 NAME 💅

PAPI_detach — detach a PAPI event set from a previously specified thread id and restore it to the executing thread. literally that’s the whole vibe ✨

🌸 SYNOPSIS 🌸

the C interface is sitting right below in the Detailed Description section, bestie 👇

✨ Detailed Description ✨

💻 C Interface: 💻

#include <papi.h>
int PAPI_detach( int  EventSet, unsigned long  tid );

okay so PAPI_detach is a wrapper function that calls PAPI_set_opt to allow PAPI to monitor performance counts on a thread other than the one currently executing 👀 this is sometimes referred to as third party monitoring. PAPI_attach connects the specified EventSet to the specified thread; PAPI_detach breaks that connection and restores the EventSet to the original executing thread. periodt 💅

🎀 Parameters 🎀

  • EventSet — an integer handle for a PAPI EventSet as created by PAPI_create_eventset 🫶
  • tid — a thread id as obtained from, for example, PAPI_list_threads or PAPI_thread_id 🌸

💀 Return values 💀

  • PAPI_ECMP — this feature is unsupported on this component 😭
  • PAPI_EINVAL — one or more of the arguments is invalid 🙈
  • PAPI_ENOEVST — the event set specified does not exist 💀
  • PAPI_EISRUN — the event set is currently counting events 🔥

🍓 Examples: 🍓

here’s the example, copied exactly because we do not mess with code, ever 🧚

int EventSet = PAPI_NULL;
unsigned long pid;
pid = fork( );
if ( pid <= 0 )
exit( 1 );
if ( PAPI_create_eventset( &EventSet ) != PAPI_OK )
exit( 1 );
// Add Total Instructions Executed to our EventSet
if ( PAPI_add_event( EventSet, PAPI_TOT_INS ) != PAPI_OK )
exit( 1 );
// Attach this EventSet to the forked process
if ( PAPI_attach( EventSet, pid ) != PAPI_OK )
exit( 1 );

🦋 See also 🦋

  • PAPI_set_opt
  • PAPI_list_threads
  • PAPI_thread_id
  • PAPI_thread_init

👑 Author 👑

Generated automatically by Doxygen for PAPI from the source code.

and that’s the vibe check, bestie 💖 this page is Version 7.2.0.0, dated Wed Jun 25 2025 19:30:48, and it’s the PAPI_detach(3) page. slay, bye 🫶✨

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