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openmpi/opal/dss/dss_internal.h
Ralph Castain 0434b615b5 Update ORTE to support PMIx v3 
This is a point-in-time update that includes support for several new PMIx features, mostly focused on debuggers and "instant on":

* initial prototype support for PMIx-based debuggers. For the moment, this is restricted to using the DVM. Supports direct launch of apps under debugger control, and indirect launch using prun as the intermediate launcher. Includes ability for debuggers to control the environment of both the launcher and the spawned app procs. Work continues on completing support for indirect launch

* IO forwarding for tools. Output of apps launched under tool control is directed to the tool and output there - includes support for XML formatting and output to files. Stdin can be forwarded from the tool to apps, but this hasn't been implemented in ORTE yet.

* Fabric integration for "instant on". Enable collection of network "blobs" to be delivered to network libraries on compute nodes prior to local proc spawn. Infrastructure is in place - implementation will come later.

* Harvesting and forwarding of envars. Enable network plugins to harvest envars and include them in the launch msg for setting the environment prior to local proc spawn. Currently, only OmniPath is supported. PMIx MCA params control which envars are included, and also allows envars to be excluded.

Signed-off-by: Ralph Castain <rhc@open-mpi.org>
2018-03-02 02:00:31 -08:00

576 строки
24 KiB
C
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/* -*- C -*-
*
* 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 (c) 2012 Los Alamos National Security, Inc. All rights reserved.
* Copyright (c) 2014-2018 Intel, Inc. All rights reserved.
* Copyright (c) 2014 Research Organization for Information Science
* and Technology (RIST). All rights reserved.
* Copyright (c) 2015 Cisco Systems, Inc. All rights reserved.
* $COPYRIGHT$
*
* Additional copyrights may follow
*
* $HEADER$
*
*/
#ifndef OPAL_DSS_INTERNAL_H_
#define OPAL_DSS_INTERNAL_H_
#include "opal_config.h"
#include "opal/constants.h"
#ifdef HAVE_SYS_TIME_H
#include <sys/time.h> /* for struct timeval */
#endif
#include "opal/class/opal_pointer_array.h"
#include "opal/dss/dss.h"
#include "opal/util/proc.h"
#if !defined(STDC_HEADERS) && HAVE_MEMORY_H
# include <memory.h>
#endif
#include <string.h>
BEGIN_C_DECLS
/*
* The default starting chunk size
*/
#define OPAL_DSS_DEFAULT_INITIAL_SIZE 2048
/*
* The default threshold size when we switch from doubling the
* buffer size to addatively increasing it
*/
#define OPAL_DSS_DEFAULT_THRESHOLD_SIZE 4096
/*
* Internal type corresponding to size_t. Do not use this in
* interface calls - use OPAL_SIZE instead.
*/
#if SIZEOF_SIZE_T == 1
#define DSS_TYPE_SIZE_T OPAL_UINT8
#elif SIZEOF_SIZE_T == 2
#define DSS_TYPE_SIZE_T OPAL_UINT16
#elif SIZEOF_SIZE_T == 4
#define DSS_TYPE_SIZE_T OPAL_UINT32
#elif SIZEOF_SIZE_T == 8
#define DSS_TYPE_SIZE_T OPAL_UINT64
#else
#error Unsupported size_t size!
#endif
/*
* Internal type corresponding to bool. Do not use this in interface
* calls - use OPAL_BOOL instead.
*/
#if SIZEOF__BOOL == 1
#define DSS_TYPE_BOOL OPAL_UINT8
#elif SIZEOF__BOOL == 2
#define DSS_TYPE_BOOL OPAL_UINT16
#elif SIZEOF__BOOL == 4
#define DSS_TYPE_BOOL OPAL_UINT32
#elif SIZEOF__BOOL == 8
#define DSS_TYPE_BOOL OPAL_UINT64
#else
#error Unsupported bool size!
#endif
/*
* Internal type corresponding to int and unsigned int. Do not use
* this in interface calls - use OPAL_INT / OPAL_UINT instead.
*/
#if SIZEOF_INT == 1
#define DSS_TYPE_INT OPAL_INT8
#define DSS_TYPE_UINT OPAL_UINT8
#elif SIZEOF_INT == 2
#define DSS_TYPE_INT OPAL_INT16
#define DSS_TYPE_UINT OPAL_UINT16
#elif SIZEOF_INT == 4
#define DSS_TYPE_INT OPAL_INT32
#define DSS_TYPE_UINT OPAL_UINT32
#elif SIZEOF_INT == 8
#define DSS_TYPE_INT OPAL_INT64
#define DSS_TYPE_UINT OPAL_UINT64
#else
#error Unsupported int size!
#endif
/*
* Internal type corresponding to pid_t. Do not use this in interface
* calls - use OPAL_PID instead.
*/
#if SIZEOF_PID_T == 1
#define DSS_TYPE_PID_T OPAL_UINT8
#elif SIZEOF_PID_T == 2
#define DSS_TYPE_PID_T OPAL_UINT16
#elif SIZEOF_PID_T == 4
#define DSS_TYPE_PID_T OPAL_UINT32
#elif SIZEOF_PID_T == 8
#define DSS_TYPE_PID_T OPAL_UINT64
#else
#error Unsupported pid_t size!
#endif
/* Unpack generic size macros */
#define UNPACK_SIZE_MISMATCH(unpack_type, remote_type, ret) \
do { \
switch(remote_type) { \
case OPAL_UINT8: \
UNPACK_SIZE_MISMATCH_FOUND(unpack_type, uint8_t, remote_type); \
break; \
case OPAL_INT8: \
UNPACK_SIZE_MISMATCH_FOUND(unpack_type, int8_t, remote_type); \
break; \
case OPAL_UINT16: \
UNPACK_SIZE_MISMATCH_FOUND(unpack_type, uint16_t, remote_type); \
break; \
case OPAL_INT16: \
UNPACK_SIZE_MISMATCH_FOUND(unpack_type, int16_t, remote_type); \
break; \
case OPAL_UINT32: \
UNPACK_SIZE_MISMATCH_FOUND(unpack_type, uint32_t, remote_type); \
break; \
case OPAL_INT32: \
UNPACK_SIZE_MISMATCH_FOUND(unpack_type, int32_t, remote_type); \
break; \
case OPAL_UINT64: \
UNPACK_SIZE_MISMATCH_FOUND(unpack_type, uint64_t, remote_type); \
break; \
case OPAL_INT64: \
UNPACK_SIZE_MISMATCH_FOUND(unpack_type, int64_t, remote_type); \
break; \
default: \
ret = OPAL_ERR_NOT_FOUND; \
} \
} while (0)
/* NOTE: do not need to deal with endianness here, as the unpacking of
the underling sender-side type will do that for us. Repeat: the
data in tmpbuf[] is already in host byte order. */
#define UNPACK_SIZE_MISMATCH_FOUND(unpack_type, tmptype, tmpdsstype) \
do { \
int32_t i; \
tmptype *tmpbuf = (tmptype*)malloc(sizeof(tmptype) * (*num_vals)); \
ret = opal_dss_unpack_buffer(buffer, tmpbuf, num_vals, tmpdsstype); \
for (i = 0 ; i < *num_vals ; ++i) { \
((unpack_type*) dest)[i] = (unpack_type)(tmpbuf[i]); \
} \
free(tmpbuf); \
} while (0)
/**
* Internal struct used for holding registered dss functions
*/
struct opal_dss_type_info_t {
opal_object_t super;
/* type identifier */
opal_data_type_t odti_type;
/** Debugging string name */
char *odti_name;
/** Pack function */
opal_dss_pack_fn_t odti_pack_fn;
/** Unpack function */
opal_dss_unpack_fn_t odti_unpack_fn;
/** copy function */
opal_dss_copy_fn_t odti_copy_fn;
/** compare function */
opal_dss_compare_fn_t odti_compare_fn;
/** print function */
opal_dss_print_fn_t odti_print_fn;
/** flag to indicate structured data */
bool odti_structured;
};
/**
* Convenience typedef
*/
typedef struct opal_dss_type_info_t opal_dss_type_info_t;
OPAL_DECLSPEC OBJ_CLASS_DECLARATION(opal_dss_type_info_t);
/*
* globals needed within dss
*/
extern bool opal_dss_initialized;
extern bool opal_dss_debug;
extern int opal_dss_verbose;
extern int opal_dss_initial_size;
extern int opal_dss_threshold_size;
extern opal_pointer_array_t opal_dss_types;
extern opal_data_type_t opal_dss_num_reg_types;
/*
* Implementations of API functions
*/
int opal_dss_pack(opal_buffer_t *buffer, const void *src,
int32_t num_vals,
opal_data_type_t type);
int opal_dss_unpack(opal_buffer_t *buffer, void *dest,
int32_t *max_num_vals,
opal_data_type_t type);
int opal_dss_copy(void **dest, void *src, opal_data_type_t type);
int opal_dss_compare(const void *value1, const void *value2,
opal_data_type_t type);
int opal_dss_print(char **output, char *prefix, void *src, opal_data_type_t type);
int opal_dss_dump(int output_stream, void *src, opal_data_type_t type);
int opal_dss_peek(opal_buffer_t *buffer, opal_data_type_t *type,
int32_t *number);
int opal_dss_peek_type(opal_buffer_t *buffer, opal_data_type_t *type);
int opal_dss_unload(opal_buffer_t *buffer, void **payload,
int32_t *bytes_used);
int opal_dss_load(opal_buffer_t *buffer, void *payload, int32_t bytes_used);
int opal_dss_copy_payload(opal_buffer_t *dest, opal_buffer_t *src);
int opal_dss_register(opal_dss_pack_fn_t pack_fn,
opal_dss_unpack_fn_t unpack_fn,
opal_dss_copy_fn_t copy_fn,
opal_dss_compare_fn_t compare_fn,
opal_dss_print_fn_t print_fn,
bool structured,
const char *name, opal_data_type_t *type);
bool opal_dss_structured(opal_data_type_t type);
char *opal_dss_lookup_data_type(opal_data_type_t type);
void opal_dss_dump_data_types(int output);
/*
* Specialized functions
*/
OPAL_DECLSPEC int opal_dss_pack_buffer(opal_buffer_t *buffer, const void *src,
int32_t num_vals, opal_data_type_t type);
OPAL_DECLSPEC int opal_dss_unpack_buffer(opal_buffer_t *buffer, void *dst,
int32_t *num_vals, opal_data_type_t type);
/*
* Internal pack functions
*/
int opal_dss_pack_null(opal_buffer_t *buffer, const void *src,
int32_t num_vals, opal_data_type_t type);
int opal_dss_pack_byte(opal_buffer_t *buffer, const void *src,
int32_t num_vals, opal_data_type_t type);
int opal_dss_pack_bool(opal_buffer_t *buffer, const void *src,
int32_t num_vals, opal_data_type_t type);
int opal_dss_pack_int(opal_buffer_t *buffer, const void *src,
int32_t num_vals, opal_data_type_t type);
int opal_dss_pack_int16(opal_buffer_t *buffer, const void *src,
int32_t num_vals, opal_data_type_t type);
int opal_dss_pack_int32(opal_buffer_t *buffer, const void *src,
int32_t num_vals, opal_data_type_t type);
int opal_dss_pack_int64(opal_buffer_t *buffer, const void *src,
int32_t num_vals, opal_data_type_t type);
int opal_dss_pack_sizet(opal_buffer_t *buffer, const void *src,
int32_t num_vals, opal_data_type_t type);
int opal_dss_pack_pid(opal_buffer_t *buffer, const void *src,
int32_t num_vals, opal_data_type_t type);
int opal_dss_pack_string(opal_buffer_t *buffer, const void *src,
int32_t num_vals, opal_data_type_t type);
int opal_dss_pack_data_type(opal_buffer_t *buffer, const void *src,
int32_t num_vals, opal_data_type_t type);
int opal_dss_pack_byte_object(opal_buffer_t *buffer, const void *src,
int32_t num_vals, opal_data_type_t type);
int opal_dss_pack_pstat(opal_buffer_t *buffer, const void *src,
int32_t num_vals, opal_data_type_t type);
int opal_dss_pack_node_stat(opal_buffer_t *buffer, const void *src,
int32_t num_vals, opal_data_type_t type);
int opal_dss_pack_value(opal_buffer_t *buffer, const void *src,
int32_t num_vals, opal_data_type_t type);
int opal_dss_pack_buffer_contents(opal_buffer_t *buffer, const void *src,
int32_t num_vals, opal_data_type_t type);
int opal_dss_pack_float(opal_buffer_t *buffer, const void *src,
int32_t num_vals, opal_data_type_t type);
int opal_dss_pack_double(opal_buffer_t *buffer, const void *src,
int32_t num_vals, opal_data_type_t type);
int opal_dss_pack_timeval(opal_buffer_t *buffer, const void *src,
int32_t num_vals, opal_data_type_t type);
int opal_dss_pack_time(opal_buffer_t *buffer, const void *src,
int32_t num_vals, opal_data_type_t type);
int opal_dss_pack_name(opal_buffer_t *buffer, const void *src,
int32_t num_vals, opal_data_type_t type);
int opal_dss_pack_jobid(opal_buffer_t *buffer, const void *src,
int32_t num_vals, opal_data_type_t type);
int opal_dss_pack_vpid(opal_buffer_t *buffer, const void *src,
int32_t num_vals, opal_data_type_t type);
int opal_dss_pack_status(opal_buffer_t *buffer, const void *src,
int32_t num_vals, opal_data_type_t type);
int opal_dss_pack_envar(opal_buffer_t *buffer, const void *src,
int32_t num_vals, opal_data_type_t type);
/*
* Internal unpack functions
*/
int opal_dss_unpack_null(opal_buffer_t *buffer, void *dest,
int32_t *num_vals, opal_data_type_t type);
int opal_dss_unpack_byte(opal_buffer_t *buffer, void *dest,
int32_t *num_vals, opal_data_type_t type);
int opal_dss_unpack_bool(opal_buffer_t *buffer, void *dest,
int32_t *num_vals, opal_data_type_t type);
int opal_dss_unpack_int(opal_buffer_t *buffer, void *dest,
int32_t *num_vals, opal_data_type_t type);
int opal_dss_unpack_int16(opal_buffer_t *buffer, void *dest,
int32_t *num_vals, opal_data_type_t type);
int opal_dss_unpack_int32(opal_buffer_t *buffer, void *dest,
int32_t *num_vals, opal_data_type_t type);
int opal_dss_unpack_int64(opal_buffer_t *buffer, void *dest,
int32_t *num_vals, opal_data_type_t type);
int opal_dss_unpack_sizet(opal_buffer_t *buffer, void *dest,
int32_t *num_vals, opal_data_type_t type);
int opal_dss_unpack_pid(opal_buffer_t *buffer, void *dest,
int32_t *num_vals, opal_data_type_t type);
int opal_dss_unpack_string(opal_buffer_t *buffer, void *dest,
int32_t *num_vals, opal_data_type_t type);
int opal_dss_unpack_data_type(opal_buffer_t *buffer, void *dest,
int32_t *num_vals, opal_data_type_t type);
int opal_dss_unpack_byte_object(opal_buffer_t *buffer, void *dest,
int32_t *num_vals, opal_data_type_t type);
int opal_dss_unpack_pstat(opal_buffer_t *buffer, void *dest,
int32_t *num_vals, opal_data_type_t type);
int opal_dss_unpack_node_stat(opal_buffer_t *buffer, void *dest,
int32_t *num_vals, opal_data_type_t type);
int opal_dss_unpack_value(opal_buffer_t *buffer, void *dest,
int32_t *num_vals, opal_data_type_t type);
int opal_dss_unpack_buffer_contents(opal_buffer_t *buffer, void *dest,
int32_t *num_vals, opal_data_type_t type);
int opal_dss_unpack_float(opal_buffer_t *buffer, void *dest,
int32_t *num_vals, opal_data_type_t type);
int opal_dss_unpack_double(opal_buffer_t *buffer, void *dest,
int32_t *num_vals, opal_data_type_t type);
int opal_dss_unpack_timeval(opal_buffer_t *buffer, void *dest,
int32_t *num_vals, opal_data_type_t type);
int opal_dss_unpack_time(opal_buffer_t *buffer, void *dest,
int32_t *num_vals, opal_data_type_t type);
int opal_dss_unpack_name(opal_buffer_t *buffer, void *dest,
int32_t *num_vals, opal_data_type_t type);
int opal_dss_unpack_jobid(opal_buffer_t *buffer, void *dest,
int32_t *num_vals, opal_data_type_t type);
int opal_dss_unpack_vpid(opal_buffer_t *buffer, void *dest,
int32_t *num_vals, opal_data_type_t type);
int opal_dss_unpack_status(opal_buffer_t *buffer, void *dest,
int32_t *num_vals, opal_data_type_t type);
int opal_dss_unpack_envar(opal_buffer_t *buffer, void *dest,
int32_t *num_vals, opal_data_type_t type);
/*
* Internal copy functions
*/
int opal_dss_std_copy(void **dest, void *src, opal_data_type_t type);
int opal_dss_copy_null(char **dest, char *src, opal_data_type_t type);
int opal_dss_copy_string(char **dest, char *src, opal_data_type_t type);
int opal_dss_copy_byte_object(opal_byte_object_t **dest, opal_byte_object_t *src,
opal_data_type_t type);
int opal_dss_copy_pstat(opal_pstats_t **dest, opal_pstats_t *src,
opal_data_type_t type);
int opal_dss_copy_node_stat(opal_node_stats_t **dest, opal_node_stats_t *src,
opal_data_type_t type);
int opal_dss_copy_value(opal_value_t **dest, opal_value_t *src,
opal_data_type_t type);
int opal_dss_copy_buffer_contents(opal_buffer_t **dest, opal_buffer_t *src,
opal_data_type_t type);
int opal_dss_copy_name(opal_process_name_t **dest, opal_process_name_t *src, opal_data_type_t type);
int opal_dss_copy_jobid(opal_jobid_t **dest, opal_jobid_t *src, opal_data_type_t type);
int opal_dss_copy_vpid(opal_vpid_t **dest, opal_vpid_t *src, opal_data_type_t type);
int opal_dss_copy_envar(opal_envar_t **dest, opal_envar_t *src, opal_data_type_t type);
/*
* Internal compare functions
*/
int opal_dss_compare_bool(bool *value1, bool *value2, opal_data_type_t type);
int opal_dss_compare_int(int *value1, int *value2, opal_data_type_t type);
int opal_dss_compare_uint(unsigned int *value1, unsigned int *value2, opal_data_type_t type);
int opal_dss_compare_size(size_t *value1, size_t *value2, opal_data_type_t type);
int opal_dss_compare_pid(pid_t *value1, pid_t *value2, opal_data_type_t type);
int opal_dss_compare_byte(char *value1, char *value2, opal_data_type_t type);
int opal_dss_compare_char(char *value1, char *value2, opal_data_type_t type);
int opal_dss_compare_int8(int8_t *value1, int8_t *value2, opal_data_type_t type);
int opal_dss_compare_uint8(uint8_t *value1, uint8_t *value2, opal_data_type_t type);
int opal_dss_compare_int16(int16_t *value1, int16_t *value2, opal_data_type_t type);
int opal_dss_compare_uint16(uint16_t *value1, uint16_t *value2, opal_data_type_t type);
int opal_dss_compare_int32(int32_t *value1, int32_t *value2, opal_data_type_t type);
int opal_dss_compare_uint32(uint32_t *value1, uint32_t *value2, opal_data_type_t type);
int opal_dss_compare_int64(int64_t *value1, int64_t *value2, opal_data_type_t type);
int opal_dss_compare_uint64(uint64_t *value1, uint64_t *value2, opal_data_type_t type);
int opal_dss_compare_null(char *value1, char *value2, opal_data_type_t type);
int opal_dss_compare_string(char *value1, char *value2, opal_data_type_t type);
int opal_dss_compare_dt(opal_data_type_t *value1, opal_data_type_t *value2, opal_data_type_t type);
int opal_dss_compare_byte_object(opal_byte_object_t *value1, opal_byte_object_t *value2, opal_data_type_t type);
int opal_dss_compare_pstat(opal_pstats_t *value1, opal_pstats_t *value2, opal_data_type_t type);
int opal_dss_compare_node_stat(opal_node_stats_t *value1, opal_node_stats_t *value2, opal_data_type_t type);
int opal_dss_compare_value(opal_value_t *value1, opal_value_t *value2, opal_data_type_t type);
int opal_dss_compare_buffer_contents(opal_buffer_t *value1, opal_buffer_t *value2, opal_data_type_t type);
int opal_dss_compare_float(float *value1, float *value2, opal_data_type_t type);
int opal_dss_compare_double(double *value1, double *value2, opal_data_type_t type);
int opal_dss_compare_timeval(struct timeval *value1, struct timeval *value2, opal_data_type_t type);
int opal_dss_compare_time(time_t *value1, time_t *value2, opal_data_type_t type);
int opal_dss_compare_name(opal_process_name_t *value1,
opal_process_name_t *value2,
opal_data_type_t type);
int opal_dss_compare_vpid(opal_vpid_t *value1,
opal_vpid_t *value2,
opal_data_type_t type);
int opal_dss_compare_jobid(opal_jobid_t *value1,
opal_jobid_t *value2,
opal_data_type_t type);
int opal_dss_compare_status(int *value1, int *value2, opal_data_type_t type);
int opal_dss_compare_envar(opal_envar_t *value1, opal_envar_t *value2, opal_data_type_t type);
/*
* Internal print functions
*/
int opal_dss_print_byte(char **output, char *prefix, uint8_t *src, opal_data_type_t type);
int opal_dss_print_string(char **output, char *prefix, char *src, opal_data_type_t type);
int opal_dss_print_size(char **output, char *prefix, size_t *src, opal_data_type_t type);
int opal_dss_print_pid(char **output, char *prefix, pid_t *src, opal_data_type_t type);
int opal_dss_print_bool(char **output, char *prefix, bool *src, opal_data_type_t type);
int opal_dss_print_int(char **output, char *prefix, int *src, opal_data_type_t type);
int opal_dss_print_uint(char **output, char *prefix, int *src, opal_data_type_t type);
int opal_dss_print_uint8(char **output, char *prefix, uint8_t *src, opal_data_type_t type);
int opal_dss_print_uint16(char **output, char *prefix, uint16_t *src, opal_data_type_t type);
int opal_dss_print_uint32(char **output, char *prefix, uint32_t *src, opal_data_type_t type);
int opal_dss_print_int8(char **output, char *prefix, int8_t *src, opal_data_type_t type);
int opal_dss_print_int16(char **output, char *prefix, int16_t *src, opal_data_type_t type);
int opal_dss_print_int32(char **output, char *prefix, int32_t *src, opal_data_type_t type);
#ifdef HAVE_INT64_T
int opal_dss_print_uint64(char **output, char *prefix, uint64_t *src, opal_data_type_t type);
int opal_dss_print_int64(char **output, char *prefix, int64_t *src, opal_data_type_t type);
#else
int opal_dss_print_uint64(char **output, char *prefix, void *src, opal_data_type_t type);
int opal_dss_print_int64(char **output, char *prefix, void *src, opal_data_type_t type);
#endif
int opal_dss_print_null(char **output, char *prefix, void *src, opal_data_type_t type);
int opal_dss_print_data_type(char **output, char *prefix, opal_data_type_t *src, opal_data_type_t type);
int opal_dss_print_byte_object(char **output, char *prefix, opal_byte_object_t *src, opal_data_type_t type);
int opal_dss_print_pstat(char **output, char *prefix, opal_pstats_t *src, opal_data_type_t type);
int opal_dss_print_node_stat(char **output, char *prefix, opal_node_stats_t *src, opal_data_type_t type);
int opal_dss_print_value(char **output, char *prefix, opal_value_t *src, opal_data_type_t type);
int opal_dss_print_buffer_contents(char **output, char *prefix, opal_buffer_t *src, opal_data_type_t type);
int opal_dss_print_float(char **output, char *prefix, float *src, opal_data_type_t type);
int opal_dss_print_double(char **output, char *prefix, double *src, opal_data_type_t type);
int opal_dss_print_timeval(char **output, char *prefix, struct timeval *src, opal_data_type_t type);
int opal_dss_print_time(char **output, char *prefix, time_t *src, opal_data_type_t type);
int opal_dss_print_name(char **output, char *prefix, opal_process_name_t *name, opal_data_type_t type);
int opal_dss_print_jobid(char **output, char *prefix, opal_process_name_t *src, opal_data_type_t type);
int opal_dss_print_vpid(char **output, char *prefix, opal_process_name_t *src, opal_data_type_t type);
int opal_dss_print_status(char **output, char *prefix, int *src, opal_data_type_t type);
int opal_dss_print_envar(char **output, char *prefix,
opal_envar_t *src, opal_data_type_t type);
/*
* Internal helper functions
*/
char* opal_dss_buffer_extend(opal_buffer_t *bptr, size_t bytes_to_add);
bool opal_dss_too_small(opal_buffer_t *buffer, size_t bytes_reqd);
opal_dss_type_info_t* opal_dss_find_type(opal_data_type_t type);
int opal_dss_store_data_type(opal_buffer_t *buffer, opal_data_type_t type);
int opal_dss_get_data_type(opal_buffer_t *buffer, opal_data_type_t *type);
END_C_DECLS
#endif
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