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/*
* Copyright (c) 2004-2007 The Trustees of Indiana University and Indiana
* University Research and Technology
* Corporation. All rights reserved.
* Copyright (c) 2004-2006 The University of Tennessee and The University
* of Tennessee Research Foundation. All rights
* reserved.
* Copyright (c) 2004-2005 High Performance Computing Center Stuttgart,
* University of Stuttgart. All rights reserved.
* Copyright (c) 2004-2005 The Regents of the University of California.
* All rights reserved.
* $COPYRIGHT$
*
* Additional copyrights may follow
*
* $HEADER$
*/
#include "opal_config.h"
#include <stdlib.h>
#include "opal/dss/dss_internal.h"
int opal_dss_compare(const void *value1, const void *value2, opal_data_type_t type)
{
opal_dss_type_info_t *info;
/* check for error */
if (NULL == value1 || NULL == value2) {
return OPAL_ERR_BAD_PARAM;
}
/* Lookup the compare function for this type and call it */
if (NULL == (info = (opal_dss_type_info_t*)opal_pointer_array_get_item(&opal_dss_types, type))) {
return OPAL_ERR_UNKNOWN_DATA_TYPE;
}
return info->odti_compare_fn(value1, value2, type);
}
/*
* NUMERIC COMPARE FUNCTIONS
*/
int opal_dss_compare_int(int *value1, int *value2, opal_data_type_t type)
{
if (*value1 > *value2) return OPAL_VALUE1_GREATER;
if (*value2 > *value1) return OPAL_VALUE2_GREATER;
return OPAL_EQUAL;
}
int opal_dss_compare_uint(unsigned int *value1, unsigned int *value2, opal_data_type_t type)
{
if (*value1 > *value2) return OPAL_VALUE1_GREATER;
if (*value2 > *value1) return OPAL_VALUE2_GREATER;
return OPAL_EQUAL;
}
int opal_dss_compare_size(size_t *value1, size_t *value2, opal_data_type_t type)
{
if (*value1 > *value2) return OPAL_VALUE1_GREATER;
if (*value2 > *value1) return OPAL_VALUE2_GREATER;
return OPAL_EQUAL;
}
int opal_dss_compare_pid(pid_t *value1, pid_t *value2, opal_data_type_t type)
{
if (*value1 > *value2) return OPAL_VALUE1_GREATER;
if (*value2 > *value1) return OPAL_VALUE2_GREATER;
return OPAL_EQUAL;
}
int opal_dss_compare_byte(char *value1, char *value2, opal_data_type_t type)
{
if (*value1 > *value2) return OPAL_VALUE1_GREATER;
if (*value2 > *value1) return OPAL_VALUE2_GREATER;
return OPAL_EQUAL;
}
int opal_dss_compare_char(char *value1, char *value2, opal_data_type_t type)
{
if (*value1 > *value2) return OPAL_VALUE1_GREATER;
if (*value2 > *value1) return OPAL_VALUE2_GREATER;
return OPAL_EQUAL;
}
int opal_dss_compare_int8(int8_t *value1, int8_t *value2, opal_data_type_t type)
{
if (*value1 > *value2) return OPAL_VALUE1_GREATER;
if (*value2 > *value1) return OPAL_VALUE2_GREATER;
return OPAL_EQUAL;
}
int opal_dss_compare_uint8(uint8_t *value1, uint8_t *value2, opal_data_type_t type)
{
if (*value1 > *value2) return OPAL_VALUE1_GREATER;
if (*value2 > *value1) return OPAL_VALUE2_GREATER;
return OPAL_EQUAL;
}
int opal_dss_compare_int16(int16_t *value1, int16_t *value2, opal_data_type_t type)
{
if (*value1 > *value2) return OPAL_VALUE1_GREATER;
if (*value2 > *value1) return OPAL_VALUE2_GREATER;
return OPAL_EQUAL;
}
int opal_dss_compare_uint16(uint16_t *value1, uint16_t *value2, opal_data_type_t type)
{
if (*value1 > *value2) return OPAL_VALUE1_GREATER;
if (*value2 > *value1) return OPAL_VALUE2_GREATER;
return OPAL_EQUAL;
}
int opal_dss_compare_int32(int32_t *value1, int32_t *value2, opal_data_type_t type)
{
if (*value1 > *value2) return OPAL_VALUE1_GREATER;
if (*value2 > *value1) return OPAL_VALUE2_GREATER;
return OPAL_EQUAL;
}
int opal_dss_compare_uint32(uint32_t *value1, uint32_t *value2, opal_data_type_t type)
{
if (*value1 > *value2) return OPAL_VALUE1_GREATER;
if (*value2 > *value1) return OPAL_VALUE2_GREATER;
return OPAL_EQUAL;
}
int opal_dss_compare_int64(int64_t *value1, int64_t *value2, opal_data_type_t type)
{
if (*value1 > *value2) return OPAL_VALUE1_GREATER;
if (*value2 > *value1) return OPAL_VALUE2_GREATER;
return OPAL_EQUAL;
}
int opal_dss_compare_uint64(uint64_t *value1, uint64_t *value2, opal_data_type_t type)
{
if (*value1 > *value2) return OPAL_VALUE1_GREATER;
if (*value2 > *value1) return OPAL_VALUE2_GREATER;
return OPAL_EQUAL;
}
/*
* NON-NUMERIC SYSTEM TYPES
*/
/* NULL */
int opal_dss_compare_null(char *value1, char *value2, opal_data_type_t type)
{
return OPAL_EQUAL;
}
/* BOOL */
int opal_dss_compare_bool(bool *value1, bool *value2, opal_data_type_t type)
{
if (*value1 && !(*value2)) return OPAL_VALUE1_GREATER;
if (*value2 && !(*value1)) return OPAL_VALUE2_GREATER;
return OPAL_EQUAL;
}
/* STRING */
int opal_dss_compare_string(char *value1, char *value2, opal_data_type_t type)
{
if (0 < strcmp(value1, value2)) return OPAL_VALUE2_GREATER;
if (0 > strcmp(value1, value2)) return OPAL_VALUE1_GREATER;
return OPAL_EQUAL;
}
/* COMPARE FUNCTIONS FOR GENERIC OPAL TYPES */
/* OPAL_DATA_TYPE */
int opal_dss_compare_dt(opal_data_type_t *value1, opal_data_type_t *value2, opal_data_type_t type)
{
if (*value1 > *value2) return OPAL_VALUE1_GREATER;
if (*value2 > *value1) return OPAL_VALUE2_GREATER;
return OPAL_EQUAL;
}
/* OPAL_DATA_VALUE */
int opal_dss_compare_data_value(opal_dss_value_t *value1, opal_dss_value_t *value2, opal_data_type_t type)
{
/* can't compare if the two types don't match */
if (value1->type != value2->type) {
return OPAL_ERR_TYPE_MISMATCH;
}
/* okay, go ahead and compare the values themselves */
return opal_dss.compare(value1->data, value2->data, value1->type);
}
/* OPAL_BYTE_OBJECT */
int opal_dss_compare_byte_object(opal_byte_object_t *value1, opal_byte_object_t *value2, opal_data_type_t type)
{
int checksum, diff;
int32_t i;
/* compare the sizes first - bigger size object is "greater than" */
if (value1->size > value2->size) return OPAL_VALUE1_GREATER;
if (value2->size > value1->size) return OPAL_VALUE2_GREATER;
/* get here if the two sizes are identical - now do a simple checksum-style
* calculation to determine "biggest"
*/
checksum = 0;
for (i=0; i < value1->size; i++) {
/* protect against overflows */
diff = value1->bytes[i] - value2->bytes[i];
if (INT_MAX-abs(checksum)-abs(diff) < 0) { /* got an overflow condition */
checksum = 0;
}
checksum += diff;
}
if (0 > checksum) return OPAL_VALUE2_GREATER; /* sum of value2 bytes was greater */
if (0 < checksum) return OPAL_VALUE1_GREATER; /* of value1 bytes was greater */
return OPAL_EQUAL; /* sum of both value's bytes was identical */
}
/* OPAL_PSTAT */
int opal_dss_compare_pstat(opal_pstats_t *value1, opal_pstats_t *value2, opal_data_type_t type)
{
return OPAL_EQUAL; /* eventually compare field to field */
}
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