+++ /dev/null
-/* ddt_exchange - send/recv data described */
-
-/* Copyright (c) 2004, 2005, 2006, 2007, 2009, 2010. The SimGrid Team.
- * All rights reserved. */
-
-/* This program is free software; you can redistribute it and/or modify it
- * under the terms of the license (GNU LGPL) which comes with this package. */
-
-#include "xbt/ex.h"
-#include "gras/DataDesc/datadesc_private.h"
-#include "gras/Transport/transport_interface.h" /* gras_trp_send/recv */
-
-XBT_LOG_NEW_DEFAULT_SUBCATEGORY(gras_ddt_exchange, gras_ddt,
- "Sending data over the network");
-const char *gras_datadesc_cat_names[9] = {
- "undefined",
- "scalar", "struct", "union", "ref", "array", "ignored",
- "invalid"
-};
-
-static gras_datadesc_type_t int_type = NULL;
-static gras_datadesc_type_t pointer_type = NULL;
-
-static XBT_INLINE void
-gras_dd_send_int(gras_socket_t sock, int *i, int stable)
-{
-
- if (!int_type) {
- int_type = gras_datadesc_by_name("int");
- xbt_assert(int_type);
- }
-
- XBT_DEBUG("send_int(%u)", *i);
- gras_trp_send(sock, (char *) i, int_type->size[GRAS_THISARCH], stable);
-}
-
-static XBT_INLINE void
-gras_dd_recv_int(gras_socket_t sock, int r_arch, int *i)
-{
-
- if (!int_type) {
- int_type = gras_datadesc_by_name("int");
- xbt_assert(int_type);
- }
-
- if (int_type->size[GRAS_THISARCH] >= int_type->size[r_arch]) {
- gras_trp_recv(sock, (char *) i, int_type->size[r_arch]);
- if (r_arch != GRAS_THISARCH)
- gras_dd_convert_elm(int_type, 1, r_arch, i, i);
- } else {
- void *ptr = xbt_malloc(int_type->size[r_arch]);
-
- gras_trp_recv(sock, (char *) ptr, int_type->size[r_arch]);
- if (r_arch != GRAS_THISARCH)
- gras_dd_convert_elm(int_type, 1, r_arch, ptr, i);
- free(ptr);
- }
- XBT_DEBUG("recv_int(%u)", *i);
-}
-
-/*
- * Note: here we suppose that the remote NULL is a sequence
- * of 'length' bytes set to 0.
- * FIXME: Check in configure?
- */
-static XBT_INLINE int gras_dd_is_r_null(char **r_ptr, long int length)
-{
- int i;
-
- for (i = 0; i < length; i++) {
- if (((unsigned char *) r_ptr)[i]) {
- return 0;
- }
- }
-
- return 1;
-}
-
-static XBT_INLINE void gras_dd_alloc_ref(xbt_dict_t refs, long int size, char **r_ref, long int r_len, /* pointer_type->size[r_arch] */
- char **l_ref, int detect_cycle)
-{
- char *l_data = NULL;
-
- xbt_assert(size > 0, "Cannot allocate %ld bytes!", size);
- l_data = xbt_malloc((size_t) size);
-
- *l_ref = l_data;
- XBT_DEBUG
- ("alloc_ref: l_data=%p, &l_data=%p; r_ref=%p; *r_ref=%p, r_len=%ld",
- (void *) l_data, (void *) &l_data, (void *) r_ref,
- (void *) (r_ref ? *r_ref : NULL), r_len);
- if (detect_cycle && r_ref && !gras_dd_is_r_null(r_ref, r_len)) {
- void *ptr = xbt_malloc(sizeof(void *));
-
- memcpy(ptr, l_ref, sizeof(void *));
-
- XBT_DEBUG("Insert l_ref=%p under r_ref=%p", *(void **) ptr,
- *(void **) r_ref);
-
- if (detect_cycle)
- xbt_dict_set_ext(refs, (const char *) r_ref, r_len, ptr, NULL);
- }
-}
-
-static int
-gras_datadesc_memcpy_rec(gras_cbps_t state,
- xbt_dict_t refs,
- gras_datadesc_type_t type,
- char *src, char *dst, int subsize,
- int detect_cycle)
-{
-
-
- unsigned int cpt;
- gras_datadesc_type_t sub_type; /* type on which we recurse */
- int count = 0;
-
- XBT_VERB("Copy a %s (%s) from %p to %p (local sizeof=%ld)",
- type->name, gras_datadesc_cat_names[type->category_code],
- src, dst, type->size[GRAS_THISARCH]);
-
- if (type->send) {
- type->send(type, state, src);
- }
-
- switch (type->category_code) {
- case e_gras_datadesc_type_cat_scalar:
- memcpy(dst, src, type->size[GRAS_THISARCH]);
- count += type->size[GRAS_THISARCH];
- break;
-
- case e_gras_datadesc_type_cat_struct:{
- gras_dd_cat_struct_t struct_data;
- gras_dd_cat_field_t field;
- char *field_src;
- char *field_dst;
-
- struct_data = type->category.struct_data;
- xbt_assert(struct_data.closed,
- "Please call gras_datadesc_declare_struct_close on %s before copying it",
- type->name);
- XBT_VERB(">> Copy all fields of the structure %s", type->name);
- xbt_dynar_foreach(struct_data.fields, cpt, field) {
- field_src = src + field->offset[GRAS_THISARCH];
- field_dst = dst + field->offset[GRAS_THISARCH];
-
- sub_type = field->type;
-
- if (field->send)
- field->send(type, state, field_src);
-
- XBT_DEBUG("Copy field %s", field->name);
- count +=
- gras_datadesc_memcpy_rec(state, refs, sub_type, field_src,
- field_dst, 0, detect_cycle
- || sub_type->cycle);
-
- if (XBT_LOG_ISENABLED(gras_ddt_exchange, xbt_log_priority_verbose)) {
- if (sub_type == gras_datadesc_by_name("unsigned int")) {
- XBT_VERB("Copied value for field '%s': %d (type: unsigned int)",
- field->name, *(unsigned int *) field_dst);
- } else if (sub_type == gras_datadesc_by_name("int")) {
- XBT_VERB("Copied value for field '%s': %d (type: int)",
- field->name, *(int *) field_dst);
-
- } else if (sub_type ==
- gras_datadesc_by_name("unsigned long int")) {
- XBT_VERB
- ("Copied value for field '%s': %ld (type: unsigned long int)",
- field->name, *(unsigned long int *) field_dst);
- } else if (sub_type == gras_datadesc_by_name("long int")) {
- XBT_VERB("Copied value for field '%s': %ld (type: long int)",
- field->name, *(long int *) field_dst);
-
- } else if (sub_type == gras_datadesc_by_name("string")) {
- XBT_VERB("Copied value for field '%s': '%s' (type: string)",
- field->name, *(char **) field_dst);
- } else {
- XBT_VERB("Copied a value for field '%s' (type not scalar?)",
- field->name);
- }
- }
-
- }
- XBT_VERB("<< Copied all fields of the structure %s", type->name);
-
- break;
- }
-
- case e_gras_datadesc_type_cat_union:{
- gras_dd_cat_union_t union_data;
- gras_dd_cat_field_t field = NULL;
- unsigned int field_num;
-
- union_data = type->category.union_data;
-
- xbt_assert(union_data.closed,
- "Please call gras_datadesc_declare_union_close on %s before copying it",
- type->name);
- /* retrieve the field number */
- field_num = union_data.selector(type, state, src);
-
- xbt_assert(field_num > 0,
- "union field selector of %s gave a negative value",
- type->name);
-
- xbt_assert(field_num < xbt_dynar_length(union_data.fields),
- "union field selector of %s returned %d but there is only %lu fields",
- type->name, field_num,
- xbt_dynar_length(union_data.fields));
-
- /* Copy the content */
- field =
- xbt_dynar_get_as(union_data.fields, field_num,
- gras_dd_cat_field_t);
- sub_type = field->type;
-
- if (field->send)
- field->send(type, state, src);
-
- count += gras_datadesc_memcpy_rec(state, refs, sub_type, src, dst, 0,
- detect_cycle || sub_type->cycle);
-
- break;
- }
-
- case e_gras_datadesc_type_cat_ref:{
- gras_dd_cat_ref_t ref_data;
- char **o_ref = NULL;
- char **n_ref = NULL;
- int reference_is_to_cpy;
-
- ref_data = type->category.ref_data;
-
- /* Detect the referenced type */
- sub_type = ref_data.type;
- if (sub_type == NULL) {
- sub_type = ref_data.selector(type, state, src);
- }
-
- /* Send the pointed data only if not already sent */
- if (*(void **) src == NULL) {
- XBT_VERB("Not copying NULL referenced data");
- *(void **) dst = NULL;
- break;
- }
- o_ref = (char **) src;
-
- reference_is_to_cpy = 1;
- if (detect_cycle &&
- (n_ref =
- xbt_dict_get_or_null_ext(refs, (char *) o_ref,
- sizeof(char *)))) {
- /* already known, no need to copy it */
- //XBT_INFO("Cycle detected");
- reference_is_to_cpy = 0;
- }
-
- if (reference_is_to_cpy) {
- int subsubcount = -1;
- void *l_referenced = NULL;
- XBT_VERB("Copy a ref to '%s' referenced at %p", sub_type->name,
- (void *) *o_ref);
-
- if (!pointer_type) {
- pointer_type = gras_datadesc_by_name("data pointer");
- xbt_assert(pointer_type);
- }
-
- if (sub_type->category_code == e_gras_datadesc_type_cat_array) {
- /* Damn. Reference to a dynamic array. Allocating the space for it is more complicated */
- gras_dd_cat_array_t array_data = sub_type->category.array_data;
- gras_datadesc_type_t subsub_type;
-
- subsub_type = array_data.type;
- subsubcount = array_data.fixed_size;
- if (subsubcount == -1)
- subsubcount =
- array_data.dynamic_size(subsub_type, state, *o_ref);
-
- if (subsubcount != 0)
- gras_dd_alloc_ref(refs,
- subsub_type->size[GRAS_THISARCH] *
- subsubcount, o_ref,
- pointer_type->size[GRAS_THISARCH],
- (char **) &l_referenced, detect_cycle);
- } else {
- gras_dd_alloc_ref(refs, sub_type->size[GRAS_THISARCH],
- o_ref, pointer_type->size[GRAS_THISARCH],
- (char **) &l_referenced, detect_cycle);
- }
-
- count += gras_datadesc_memcpy_rec(state, refs, sub_type,
- *o_ref, (char *) l_referenced,
- subsubcount, detect_cycle
- || sub_type->cycle);
-
- *(void **) dst = l_referenced;
- XBT_VERB("'%s' previously referenced at %p now at %p",
- sub_type->name, *(void **) o_ref, l_referenced);
-
- } else {
- XBT_VERB
- ("NOT copying data previously referenced @%p (already done, @%p now)",
- *(void **) o_ref, *(void **) n_ref);
-
- *(void **) dst = *n_ref;
-
- }
- break;
- }
-
- case e_gras_datadesc_type_cat_array:{
- gras_dd_cat_array_t array_data;
- unsigned long int array_count;
- char *src_ptr = src;
- char *dst_ptr = dst;
- long int elm_size;
-
- array_data = type->category.array_data;
-
- /* determine and send the element count */
- array_count = array_data.fixed_size;
- if (array_count == -1)
- array_count = subsize;
- if (array_count == -1) {
- array_count = array_data.dynamic_size(type, state, src);
- xbt_assert(array_count >= 0,
- "Invalid (negative) array size for type %s",
- type->name);
- }
-
- /* send the content */
- sub_type = array_data.type;
- elm_size = sub_type->aligned_size[GRAS_THISARCH];
- if (sub_type->category_code == e_gras_datadesc_type_cat_scalar) {
- XBT_VERB("Array of %ld scalars, copy it in one shot", array_count);
- memcpy(dst, src,
- sub_type->aligned_size[GRAS_THISARCH] * array_count);
- count += sub_type->aligned_size[GRAS_THISARCH] * array_count;
- } else if (sub_type->category_code == e_gras_datadesc_type_cat_array
- && sub_type->category.array_data.fixed_size > 0
- && sub_type->category.array_data.type->category_code ==
- e_gras_datadesc_type_cat_scalar) {
-
- XBT_VERB("Array of %ld fixed array of scalars, copy it in one shot",
- array_count);
- memcpy(dst, src,
- sub_type->category.array_data.
- type->aligned_size[GRAS_THISARCH]
- * array_count * sub_type->category.array_data.fixed_size);
- count +=
- sub_type->category.array_data.type->aligned_size[GRAS_THISARCH]
- * array_count * sub_type->category.array_data.fixed_size;
-
- } else {
- XBT_VERB("Array of %ld stuff, copy it in one after the other",
- array_count);
- for (cpt = 0; cpt < array_count; cpt++) {
- XBT_VERB("Copy the %dth stuff out of %ld", cpt, array_count);
- count +=
- gras_datadesc_memcpy_rec(state, refs, sub_type, src_ptr,
- dst_ptr, 0, detect_cycle
- || sub_type->cycle);
- src_ptr += elm_size;
- dst_ptr += elm_size;
- }
- }
- break;
- }
-
- default:
- xbt_die("Invalid type");
- }
-
- return count;
-}
-
-/**
- * gras_datadesc_memcpy:
- *
- * Copy the data pointed by src and described by type
- * to a new location, and store a pointer to it in dst.
- *
- */
-int gras_datadesc_memcpy(gras_datadesc_type_t type, void *src, void *dst)
-{
- static gras_cbps_t state = NULL;
- static xbt_dict_t refs = NULL; /* all references already sent */
- int size = 0;
-
- xbt_assert(type, "called with NULL type descriptor");
-
- XBT_DEBUG("Memcopy a %s from %p to %p", gras_datadesc_get_name(type), src,
- dst);
- if (!state) {
- state = gras_cbps_new();
- refs = xbt_dict_new_homogeneous(xbt_free_f);
- }
-
- TRY {
- size =
- gras_datadesc_memcpy_rec(state, refs, type, (char *) src,
- (char *) dst, 0, type->cycle);
- }
- TRY_CLEANUP {
- xbt_dict_reset(refs);
- gras_cbps_reset(state);
- }
- CATCH_ANONYMOUS {
- RETHROW;
- }
- return size;
-}
-
-/***
- *** Direct use functions
- ***/
-
-static void
-gras_datadesc_send_rec(gras_socket_t sock,
- gras_cbps_t state,
- xbt_dict_t refs,
- gras_datadesc_type_t type,
- char *data, int detect_cycle)
-{
-
- unsigned int cpt;
- gras_datadesc_type_t sub_type; /* type on which we recurse */
-
- XBT_VERB("Send a %s (%s)",
- type->name, gras_datadesc_cat_names[type->category_code]);
-
- if (!strcmp(type->name, "string"))
- XBT_VERB("value: '%s'", *(char **) data);
-
- if (type->send) {
- type->send(type, state, data);
- XBT_DEBUG("Run the emission callback");
- }
-
- switch (type->category_code) {
- case e_gras_datadesc_type_cat_scalar:
- gras_trp_send(sock, data, type->size[GRAS_THISARCH], 1);
- break;
-
- case e_gras_datadesc_type_cat_struct:{
- gras_dd_cat_struct_t struct_data;
- gras_dd_cat_field_t field;
- char *field_data;
-
- struct_data = type->category.struct_data;
- xbt_assert(struct_data.closed,
- "Please call gras_datadesc_declare_struct_close on %s before sending it",
- type->name);
- XBT_VERB(">> Send all fields of the structure %s", type->name);
- xbt_dynar_foreach(struct_data.fields, cpt, field) {
- field_data = data;
- field_data += field->offset[GRAS_THISARCH];
-
- sub_type = field->type;
-
- if (field->send) {
- XBT_DEBUG("Run the emission callback of field %s", field->name);
- field->send(type, state, field_data);
- }
-
- XBT_VERB("Send field %s", field->name);
- gras_datadesc_send_rec(sock, state, refs, sub_type, field_data,
- detect_cycle || sub_type->cycle);
-
- }
- XBT_VERB("<< Sent all fields of the structure %s", type->name);
-
- break;
- }
-
- case e_gras_datadesc_type_cat_union:{
- gras_dd_cat_union_t union_data;
- gras_dd_cat_field_t field = NULL;
- int field_num;
-
- union_data = type->category.union_data;
-
- xbt_assert(union_data.closed,
- "Please call gras_datadesc_declare_union_close on %s before sending it",
- type->name);
- /* retrieve the field number */
- field_num = union_data.selector(type, state, data);
-
- xbt_assert(field_num > 0,
- "union field selector of %s gave a negative value",
- type->name);
-
- xbt_assert(field_num < xbt_dynar_length(union_data.fields),
- "union field selector of %s returned %d but there is only %lu fields",
- type->name, field_num,
- xbt_dynar_length(union_data.fields));
-
- /* Send the field number */
- gras_dd_send_int(sock, &field_num, 0 /* not stable */ );
-
- /* Send the content */
- field =
- xbt_dynar_get_as(union_data.fields, field_num,
- gras_dd_cat_field_t);
- sub_type = field->type;
-
- if (field->send)
- field->send(type, state, data);
-
- gras_datadesc_send_rec(sock, state, refs, sub_type, data,
- detect_cycle || sub_type->cycle);
-
- break;
- }
-
- case e_gras_datadesc_type_cat_ref:{
- gras_dd_cat_ref_t ref_data;
- void **ref = (void **) data;
- int reference_is_to_send;
-
- ref_data = type->category.ref_data;
-
- /* Detect the referenced type and send it to peer if needed */
- sub_type = ref_data.type;
- if (sub_type == NULL) {
- sub_type = ref_data.selector(type, state, data);
- gras_dd_send_int(sock, &(sub_type->code), 1 /*stable */ );
- }
-
- /* Send the actual value of the pointer for cycle handling */
- if (!pointer_type) {
- pointer_type = gras_datadesc_by_name("data pointer");
- xbt_assert(pointer_type);
- }
-
- gras_trp_send(sock, (char *) data,
- pointer_type->size[GRAS_THISARCH], 1 /*stable */ );
-
- /* Send the pointed data only if not already sent */
- if (*(void **) data == NULL) {
- XBT_VERB("Not sending NULL referenced data");
- break;
- }
-
- reference_is_to_send = 1;
- /* return ignored. Just checking whether it's known or not */
- if (detect_cycle
- && xbt_dict_get_or_null_ext(refs, (char *) ref,
- sizeof(char *))) {
- //XBT_INFO("Cycle detected");
- reference_is_to_send = 0;
- }
-
- if (reference_is_to_send) {
- XBT_VERB("Sending data referenced at %p", (void *) *ref);
- if (detect_cycle)
- xbt_dict_set_ext(refs, (char *) ref, sizeof(void *), ref, NULL);
- gras_datadesc_send_rec(sock, state, refs, sub_type, *ref,
- detect_cycle || sub_type->cycle);
-
- } else {
- XBT_VERB("Not sending data referenced at %p (already done)",
- (void *) *ref);
- }
-
- break;
- }
-
- case e_gras_datadesc_type_cat_array:{
- gras_dd_cat_array_t array_data;
- int count;
- char *ptr = data;
- long int elm_size;
-
- array_data = type->category.array_data;
-
- /* determine and send the element count */
- count = array_data.fixed_size;
- if (count == -1) {
- count = array_data.dynamic_size(type, state, data);
- xbt_assert(count >= 0,
- "Invalid (negative) array size for type %s",
- type->name);
- gras_dd_send_int(sock, &count, 0 /*non-stable */ );
- }
-
- /* send the content */
- sub_type = array_data.type;
- elm_size = sub_type->aligned_size[GRAS_THISARCH];
- if (sub_type->category_code == e_gras_datadesc_type_cat_scalar) {
- XBT_VERB("Array of %d scalars, send it in one shot", count);
- gras_trp_send(sock, data,
- sub_type->aligned_size[GRAS_THISARCH] * count,
- 0 /* not stable */ );
- } else if (sub_type->category_code == e_gras_datadesc_type_cat_array
- && sub_type->category.array_data.fixed_size > 0
- && sub_type->category.array_data.type->category_code ==
- e_gras_datadesc_type_cat_scalar) {
-
- XBT_VERB("Array of %d fixed array of scalars, send it in one shot",
- count);
- gras_trp_send(sock, data,
- sub_type->category.array_data.
- type->aligned_size[GRAS_THISARCH]
- * count * sub_type->category.array_data.fixed_size,
- 0 /* not stable */ );
-
- } else {
- for (cpt = 0; cpt < count; cpt++) {
- gras_datadesc_send_rec(sock, state, refs, sub_type, ptr,
- detect_cycle || sub_type->cycle);
- ptr += elm_size;
- }
- }
- break;
- }
-
- default:
- xbt_die("Invalid type");
- }
-}
-
-/**
- * gras_datadesc_send:
- *
- * Copy the data pointed by src and described by type to the socket
- *
- */
-void gras_datadesc_send(gras_socket_t sock,
- gras_datadesc_type_t type, void *src)
-{
- static gras_cbps_t state = NULL;
- static xbt_dict_t refs = NULL; /* all references already sent */
-
- xbt_assert(type, "called with NULL type descriptor");
-
- if (!state) {
- state = gras_cbps_new();
- refs = xbt_dict_new_homogeneous(NULL);
- }
-
- TRY {
- gras_datadesc_send_rec(sock, state, refs, type, (char *) src,
- type->cycle);
- }
- TRY_CLEANUP {
- xbt_dict_reset(refs);
- gras_cbps_reset(state);
- }
- CATCH_ANONYMOUS {
- RETHROW;
- }
-}
-
-/**
- * gras_datadesc_recv_rec:
- *
- * Do the data reception job recursively.
- *
- * subsize used only to deal with vicious case of reference to dynamic array.
- * This size is needed at the reference reception level (to allocate enough
- * space) and at the array reception level (to fill enough room).
- *
- * Having this size passed as an argument of the recursive function is a crude
- * hack, but I was told that working code is sometimes better than neat one ;)
- */
-static void
-gras_datadesc_recv_rec(gras_socket_t sock,
- gras_cbps_t state,
- xbt_dict_t refs,
- gras_datadesc_type_t type,
- int r_arch,
- char **r_data,
- long int r_lgr,
- char *l_data, int subsize, int detect_cycle)
-{
-
- unsigned int cpt;
- gras_datadesc_type_t sub_type;
-
- XBT_VERB("Recv a %s @%p", type->name, (void *) l_data);
- xbt_assert(l_data);
-
- switch (type->category_code) {
- case e_gras_datadesc_type_cat_scalar:
- if (type->size[GRAS_THISARCH] == type->size[r_arch]) {
- gras_trp_recv(sock, (char *) l_data, type->size[r_arch]);
- if (r_arch != GRAS_THISARCH)
- gras_dd_convert_elm(type, 1, r_arch, l_data, l_data);
- } else {
- void *ptr = xbt_malloc(type->size[r_arch]);
-
- gras_trp_recv(sock, (char *) ptr, type->size[r_arch]);
- if (r_arch != GRAS_THISARCH)
- gras_dd_convert_elm(type, 1, r_arch, ptr, l_data);
- free(ptr);
- }
- break;
-
- case e_gras_datadesc_type_cat_struct:{
- gras_dd_cat_struct_t struct_data;
- gras_dd_cat_field_t field;
-
- struct_data = type->category.struct_data;
-
- xbt_assert(struct_data.closed,
- "Please call gras_datadesc_declare_struct_close on %s before receiving it",
- type->name);
- XBT_VERB(">> Receive all fields of the structure %s", type->name);
- xbt_dynar_foreach(struct_data.fields, cpt, field) {
- char *field_data = l_data + field->offset[GRAS_THISARCH];
-
- sub_type = field->type;
-
- gras_datadesc_recv_rec(sock, state, refs, sub_type,
- r_arch, NULL, 0,
- field_data, -1,
- detect_cycle || sub_type->cycle);
-
- if (field->recv) {
- XBT_DEBUG("Run the reception callback of field %s", field->name);
- field->recv(type, state, (void *) l_data);
- }
-
- }
- XBT_VERB("<< Received all fields of the structure %s", type->name);
-
- break;
- }
-
- case e_gras_datadesc_type_cat_union:{
- gras_dd_cat_union_t union_data;
- gras_dd_cat_field_t field = NULL;
- int field_num;
-
- union_data = type->category.union_data;
-
- xbt_assert(union_data.closed,
- "Please call gras_datadesc_declare_union_close on %s before receiving it",
- type->name);
- /* retrieve the field number */
- gras_dd_recv_int(sock, r_arch, &field_num);
- if (field_num < 0)
- THROWF(mismatch_error, 0,
- "Received union field for %s is negative", type->name);
- if (field_num > xbt_dynar_length(union_data.fields))
- THROWF(mismatch_error, 0,
- "Received union field for %s is said to be #%d but there is only %lu fields",
- type->name, field_num, xbt_dynar_length(union_data.fields));
-
- /* Recv the content */
- field =
- xbt_dynar_get_as(union_data.fields, field_num,
- gras_dd_cat_field_t);
- sub_type = field->type;
-
- gras_datadesc_recv_rec(sock, state, refs, sub_type,
- r_arch, NULL, 0,
- l_data, -1, detect_cycle || sub_type->cycle);
- if (field->recv)
- field->recv(type, state, l_data);
-
- break;
- }
-
- case e_gras_datadesc_type_cat_ref:{
- char **r_ref = NULL;
- char **l_ref = NULL;
- gras_dd_cat_ref_t ref_data;
- int reference_is_to_recv = 0;
-
- ref_data = type->category.ref_data;
-
- /* Get the referenced type locally or from peer */
- sub_type = ref_data.type;
- if (sub_type == NULL) {
- int ref_code;
- gras_dd_recv_int(sock, r_arch, &ref_code);
- sub_type = gras_datadesc_by_id(ref_code);
- }
-
- /* Get the actual value of the pointer for cycle handling */
- if (!pointer_type) {
- pointer_type = gras_datadesc_by_name("data pointer");
- xbt_assert(pointer_type);
- }
-
- r_ref = xbt_malloc(pointer_type->size[r_arch]);
-
- gras_trp_recv(sock, (char *) r_ref, pointer_type->size[r_arch]);
-
- /* Receive the pointed data only if not already sent */
- if (gras_dd_is_r_null(r_ref, pointer_type->size[r_arch])) {
- XBT_VERB("Not receiving data remotely referenced @%p since it's NULL",
- *(void **) r_ref);
- *(void **) l_data = NULL;
- free(r_ref);
- break;
- }
-
- reference_is_to_recv = 1;
- if (detect_cycle && (l_ref =
- xbt_dict_get_or_null_ext(refs, (char *) r_ref,
- pointer_type->size
- [r_arch]))) {
- reference_is_to_recv = 0;
- //XBT_INFO("Cycle detected");
- }
-
- if (reference_is_to_recv) {
- int subsubcount = -1;
- void *l_referenced = NULL;
-
- XBT_VERB("Receiving a ref to '%s', remotely @%p",
- sub_type->name, *(void **) r_ref);
- if (sub_type->category_code == e_gras_datadesc_type_cat_array) {
- /* Damn. Reference to a dynamic array. Allocating the space for it is more complicated */
- gras_dd_cat_array_t array_data = sub_type->category.array_data;
- gras_datadesc_type_t subsub_type;
-
- subsubcount = array_data.fixed_size;
- if (subsubcount == -1)
- gras_dd_recv_int(sock, r_arch, &subsubcount);
-
- subsub_type = array_data.type;
-
- if (subsubcount != 0)
- gras_dd_alloc_ref(refs,
- subsub_type->size[GRAS_THISARCH] *
- subsubcount, r_ref,
- pointer_type->size[r_arch],
- (char **) &l_referenced, detect_cycle);
- else
- l_referenced = NULL;
- } else {
- gras_dd_alloc_ref(refs, sub_type->size[GRAS_THISARCH],
- r_ref, pointer_type->size[r_arch],
- (char **) &l_referenced, detect_cycle);
- }
-
- if (l_referenced != NULL)
- gras_datadesc_recv_rec(sock, state, refs, sub_type,
- r_arch, r_ref, pointer_type->size[r_arch],
- (char *) l_referenced, subsubcount,
- detect_cycle || sub_type->cycle);
-
- *(void **) l_data = l_referenced;
- XBT_VERB("'%s' remotely referenced at %p locally at %p",
- sub_type->name, *(void **) r_ref, l_referenced);
-
- } else {
- XBT_VERB
- ("NOT receiving data remotely referenced @%p (already done, @%p here)",
- *(void **) r_ref, *(void **) l_ref);
-
- *(void **) l_data = *l_ref;
-
- }
- free(r_ref);
- break;
- }
-
- case e_gras_datadesc_type_cat_array:{
- gras_dd_cat_array_t array_data;
- int count;
- char *ptr;
- long int elm_size;
-
- array_data = type->category.array_data;
- /* determine element count locally, or from caller, or from peer */
- count = array_data.fixed_size;
- if (count == -1)
- count = subsize;
- if (count == -1)
- gras_dd_recv_int(sock, r_arch, &count);
- if (count == -1)
- THROWF(mismatch_error, 0,
- "Invalid (=-1) array size for type %s", type->name);
-
- /* receive the content */
- sub_type = array_data.type;
- if (sub_type->category_code == e_gras_datadesc_type_cat_scalar) {
- XBT_VERB("Array of %d scalars, get it in one shoot", count);
- if (sub_type->aligned_size[GRAS_THISARCH] >=
- sub_type->aligned_size[r_arch]) {
- gras_trp_recv(sock, (char *) l_data,
- sub_type->aligned_size[r_arch] * count);
- if (r_arch != GRAS_THISARCH)
- gras_dd_convert_elm(sub_type, count, r_arch, l_data, l_data);
- } else {
- ptr = xbt_malloc(sub_type->aligned_size[r_arch] * count);
-
- gras_trp_recv(sock, (char *) ptr,
- sub_type->size[r_arch] * count);
- if (r_arch != GRAS_THISARCH)
- gras_dd_convert_elm(sub_type, count, r_arch, ptr, l_data);
- free(ptr);
- }
- } else if (sub_type->category_code == e_gras_datadesc_type_cat_array
- && sub_type->category.array_data.fixed_size >= 0
- && sub_type->category.array_data.type->category_code ==
- e_gras_datadesc_type_cat_scalar) {
- gras_datadesc_type_t subsub_type;
- array_data = sub_type->category.array_data;
- subsub_type = array_data.type;
-
- XBT_VERB("Array of %d fixed array of scalars, get it in one shot",
- count);
- if (subsub_type->aligned_size[GRAS_THISARCH] >=
- subsub_type->aligned_size[r_arch]) {
- gras_trp_recv(sock, (char *) l_data,
- subsub_type->aligned_size[r_arch] * count *
- array_data.fixed_size);
- if (r_arch != GRAS_THISARCH)
- gras_dd_convert_elm(subsub_type, count * array_data.fixed_size,
- r_arch, l_data, l_data);
- } else {
- ptr =
- xbt_malloc(subsub_type->aligned_size[r_arch] * count *
- array_data.fixed_size);
-
- gras_trp_recv(sock, (char *) ptr,
- subsub_type->size[r_arch] * count *
- array_data.fixed_size);
- if (r_arch != GRAS_THISARCH)
- gras_dd_convert_elm(subsub_type, count * array_data.fixed_size,
- r_arch, ptr, l_data);
- free(ptr);
- }
-
-
- } else {
- /* not scalar content, get it recursively (may contain pointers) */
- elm_size = sub_type->aligned_size[GRAS_THISARCH];
- XBT_VERB("Receive a %d-long array of %s", count, sub_type->name);
-
- ptr = l_data;
- for (cpt = 0; cpt < count; cpt++) {
- gras_datadesc_recv_rec(sock, state, refs, sub_type,
- r_arch, NULL, 0, ptr, -1,
- detect_cycle || sub_type->cycle);
-
- ptr += elm_size;
- }
- }
- break;
- }
-
- default:
- xbt_die("Invalid type");
- }
-
- if (type->recv)
- type->recv(type, state, l_data);
-
- if (!strcmp(type->name, "string"))
- XBT_VERB("value: '%s'", *(char **) l_data);
-
-}
-
-/**
- * gras_datadesc_recv:
- *
- * Get an instance of the datatype described by @type from the @socket,
- * and store a pointer to it in @dst
- *
- */
-void
-gras_datadesc_recv(gras_socket_t sock,
- gras_datadesc_type_t type, int r_arch, void *dst)
-{
- static gras_cbps_t state = NULL; /* callback persistent state */
- static xbt_dict_t refs = NULL; /* all references already sent */
-
- if (!state) {
- state = gras_cbps_new();
- refs = xbt_dict_new_homogeneous(xbt_free_f);
- }
-
- xbt_assert(type, "called with NULL type descriptor");
- TRY {
- gras_datadesc_recv_rec(sock, state, refs, type,
- r_arch, NULL, 0, (char *) dst, -1, type->cycle);
- }
- TRY_CLEANUP {
- xbt_dict_reset(refs);
- gras_cbps_reset(state);
- }
- CATCH_ANONYMOUS {
- RETHROW;
- }
-}
