cpus.h File Reference

Include dependency graph for cpus.h:

This graph shows which files directly or indirectly include this file:

Go to the source code of this file.

Data Structures
struct	CpuInfo_t
Functions
int	_papi_hwi_initialize_cpu (CpuInfo_t **dest, unsigned int cpu_num)
int	_papi_hwi_shutdown_cpu (CpuInfo_t *cpu)
inline_static CpuInfo_t *	_papi_hwi_lookup_cpu (unsigned int cpu_num)
inline_static int	_papi_hwi_lookup_or_create_cpu (CpuInfo_t **here, unsigned int cpu_num)
Variables
volatile CpuInfo_t *	_papi_hwi_cpu_head

---

Detailed Description

CVS: $Id$ Author: Gary Mohr gary.mohr@bull.com

• based on threads.h by unknown author -

Definition in file cpus.h.

---

Function Documentation

int _papi_hwi_initialize_cpu	(	CpuInfo_t **	dest,
		unsigned int	cpu_num
	)

< Insufficient memory

< No error

Definition at line 185 of file cpus.c.

{
   THRDBG("Entry: dest: %p, *dest: %p, cpu_num: %d\n", dest, *dest, cpu_num);
    int retval;
    CpuInfo_t *cpu;
    int i;

    if ( ( cpu = allocate_cpu(cpu_num) ) == NULL ) {
        *dest = NULL;
        return ( PAPI_ENOMEM );
    }

    /* Call the component to fill in anything special. */
    for ( i = 0; i < papi_num_components; i++ ) {
        retval = _papi_hwd[i]->init_thread( cpu->context[i] );
        if ( retval ) {
            free_cpu( &cpu );
            *dest = NULL;
            return ( retval );
        }
    }

    insert_cpu( cpu );

    *dest = cpu;
    return ( PAPI_OK );
}

Here is the call graph for this function:

Here is the caller graph for this function:

inline_static CpuInfo_t* _papi_hwi_lookup_cpu

(

unsigned int

cpu_num

)

Definition at line 31 of file cpus.h.

{
    THRDBG("Entry:\n");
    CpuInfo_t *tmp;

    _papi_hwi_lock( CPUS_LOCK );

    tmp = ( CpuInfo_t * ) _papi_hwi_cpu_head;
    while ( tmp != NULL ) {
        THRDBG( "Examining cpu 0x%x at %p\n", tmp->cpu_num, tmp );
        if ( tmp->cpu_num == cpu_num )
            break;
        tmp = tmp->next;
        if ( tmp == _papi_hwi_cpu_head ) {
            tmp = NULL;
            break;
        }
    }

    if ( tmp ) {
        _papi_hwi_cpu_head = tmp;
        THRDBG( "Found cpu 0x%x at %p\n", cpu_num, tmp );
    } else {
        THRDBG( "Did not find cpu 0x%x\n", cpu_num );
    }

    _papi_hwi_unlock( CPUS_LOCK );
    return ( tmp );
}

Here is the call graph for this function:

Here is the caller graph for this function:

inline_static int _papi_hwi_lookup_or_create_cpu	(	CpuInfo_t **	here,
		unsigned int	cpu_num
	)

Definition at line 62 of file cpus.h.

{
    THRDBG("Entry: here: %p\n", here);
    CpuInfo_t *tmp = NULL;
    int retval = PAPI_OK;

    tmp = _papi_hwi_lookup_cpu(cpu_num);
    if ( tmp == NULL )
        retval = _papi_hwi_initialize_cpu( &tmp, cpu_num );

    if ( retval == PAPI_OK )
        *here = tmp;

    return ( retval );
}

Here is the call graph for this function:

Here is the caller graph for this function:

int _papi_hwi_shutdown_cpu

(

CpuInfo_t *

cpu

)

< No error

< No error

Definition at line 214 of file cpus.c.

{
   THRDBG("Entry: cpu: %p, cpu_num: %d\n", cpu, cpu->cpu_num);
    int retval = PAPI_OK;
    int i, failure = 0;

    remove_cpu( cpu );
    THRDBG( "Shutting down cpu %d at %p\n", cpu->cpu_num, cpu );
    for ( i = 0; i < papi_num_components; i++ ) {
        retval = _papi_hwd[i]->shutdown_thread( cpu->context[i] );
        if ( retval != PAPI_OK )
            failure = retval;
    }
    free_cpu( &cpu );
    return ( failure );
}

Here is the call graph for this function:

Here is the caller graph for this function:

---

Variable Documentation

volatile CpuInfo_t* _papi_hwi_cpu_head

Definition at line 29 of file cpus.c.