+++ /dev/null
-/* $Id$ */
-
-/* ddt_use - use of datatypes structs (public) */
-
-/* Authors: Olivier Aumage, Martin Quinson */
-/* Copyright (C) 2003, 2004 the GRAS posse. */
-
-/* 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 "DataDesc/datadesc_private.h"
-
-GRAS_LOG_NEW_DEFAULT_SUBCATEGORY(use,DataDesc);
-
-static 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 gras_error_t gras_dd_send_int(gras_socket_t *sock, int i);
-static gras_error_t gras_dd_recv_int(gras_socket_t *sock, int r_arch, int *i);
-
-static gras_error_t
-gras_dd_alloc_ref(gras_dict_t *refs, long int size,
- char **r_ref, long int r_len,
- char **l_ref);
-static int
-gras_dd_is_r_null(char **r_ptr, long int length);
-
-static gras_error_t
-gras_datadesc_send_rec(gras_socket_t *sock,
- gras_dd_cbps_t *state,
- gras_dict_t *refs,
- gras_datadesc_type_t *type,
- char *data);
-static gras_error_t
-gras_datadesc_recv_rec(gras_socket_t *sock,
- gras_dd_cbps_t *state,
- gras_dict_t *refs,
- gras_datadesc_type_t *type,
- int r_arch,
- char **r_data,
- long int r_lgr,
- char **dst);
-
-
-static gras_error_t
-gras_dd_send_int(gras_socket_t *sock,int i) {
- gras_error_t errcode;
-
- if (!int_type)
- TRY(gras_datadesc_by_name("int", &int_type));
-
- DEBUG1("send_int(%d)",i);
- return gras_trp_chunk_send(sock, (char*)&i, int_type->size[GRAS_THISARCH]);
-}
-
-static gras_error_t
-gras_dd_recv_int(gras_socket_t *sock, int r_arch, int *i) {
- gras_error_t errcode;
-
- if (!int_type)
- TRY(gras_datadesc_by_name("int", &int_type));
-
- if (int_type->size[GRAS_THISARCH] >= int_type->size[r_arch]) {
- TRY(gras_trp_chunk_recv(sock, (char*)i, int_type->size[r_arch]));
- TRY(gras_dd_convert_elm(int_type,r_arch, i,i));
- } else {
- void *ptr = NULL;
- ptr = malloc((size_t)int_type->size[r_arch]);
- TRY(gras_trp_chunk_recv(sock, (char*)ptr, int_type->size[r_arch]));
- TRY(gras_dd_convert_elm(int_type,r_arch, ptr,i));
- free(ptr);
- }
- DEBUG1("recv_int(%d)",*i);
-
- return no_error;
-}
-
-/*
- * Note: here we suppose that the remote NULL is a sequence
- * of 'length' bytes set to 0.
- * FIXME: Check in configure?
- */
-static 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 gras_error_t
-gras_dd_alloc_ref(gras_dict_t *refs,
- long int size,
- char **r_ref,
- long int r_len, /* pointer_type->size[r_arch] */
- char **l_ref) {
- char *l_data = NULL;
- gras_error_t errcode;
-
- gras_assert1(size>0,"Cannot allocate %d bytes!", size);
- if (! (l_data = malloc((size_t)size)) )
- RAISE_MALLOC;
-
- *l_ref = l_data;
- DEBUG2("l_data=%p, &l_data=%p",l_data,&l_data);
-
- DEBUG3("alloc_ref: r_ref=%p; *r_ref=%p, r_len=%d",
- r_ref, r_ref?*r_ref:NULL, r_len);
- if (r_ref && !gras_dd_is_r_null( r_ref, r_len)) {
- void *ptr = malloc(sizeof(void *));
- if (!ptr)
- RAISE_MALLOC;
- // memcpy(ptr,&l_data, sizeof(void *));
- memcpy(ptr,l_ref, sizeof(void *));
-
- DEBUG2("Insert %p under %p",*(void**)ptr, *(void**)r_ref);
- /* FIXME: Leaking on the ptr. Do I really need to copy it? */
- TRY(gras_dict_insert_ext(refs,(const char *) r_ref, r_len, ptr, NULL));
- }
- return no_error;
-}
-
-/**
- * gras_datadesc_get_id_from_name:
- * Returns: -1 in case of error.
- *
- * Retrieve the ID of a previously declared datatype from its name.
- */
-long int
-gras_datadesc_get_id_from_name(const char *name) {
- gras_error_t errcode;
- gras_datadesc_type_t *type;
-
- errcode = gras_datadesc_by_name(name,&type);
- if (errcode != no_error)
- return -1;
- return type->code;
-}
-
-/**
- * gras_datadesc_type_cmp:
- *
- * Compares two datadesc types with the same semantic than strcmp.
- *
- * This comparison does not take the set headers into account (name and ID),
- * but only the payload (actual type description).
- */
-int gras_datadesc_type_cmp(const gras_datadesc_type_t *d1,
- const gras_datadesc_type_t *d2) {
- int ret,cpt;
- gras_dd_cat_field_t *field1,*field2;
- gras_datadesc_type_t *field_desc_1,*field_desc_2;
-
-
- if (!d1 && d2) return 1;
- if (!d1 && !d2) return 0;
- if ( d1 && !d2) return -1;
-
- if (d1->size != d2->size )
- return d1->size > d2->size ? 1 : -1;
- if (d1->alignment != d2->alignment)
- return d1->alignment > d2->alignment ? 1 : -1;
- if (d1->aligned_size != d2->aligned_size)
- return d1->aligned_size > d2->aligned_size ? 1 : -1;
-
- if (d1->category_code != d2->category_code)
- return d1->category_code > d2->category_code ? 1 : -1;
-
- if (d1->pre != d2->pre)
- return d1->pre > d2->pre ? 1 : -1;
- if (d1->post != d2->post)
- return d1->post > d2->post ? 1 : -1;
-
- switch (d1->category_code) {
- case e_gras_datadesc_type_cat_scalar:
- if (d1->category.scalar_data.encoding != d2->category.scalar_data.encoding)
- return d1->category.scalar_data.encoding > d2->category.scalar_data.encoding ? 1 : -1 ;
- break;
-
- case e_gras_datadesc_type_cat_struct:
- if (gras_dynar_length(d1->category.struct_data.fields) !=
- gras_dynar_length(d2->category.struct_data.fields))
- return gras_dynar_length(d1->category.struct_data.fields) >
- gras_dynar_length(d2->category.struct_data.fields) ?
- 1 : -1;
-
- gras_dynar_foreach(d1->category.struct_data.fields, cpt, field1) {
-
- gras_dynar_get(d2->category.struct_data.fields, cpt, field2);
- gras_datadesc_by_id(field1->code,&field_desc_1); /* FIXME: errcode ignored */
- gras_datadesc_by_id(field2->code,&field_desc_2);
- ret = gras_datadesc_type_cmp(field_desc_1,field_desc_2);
- if (ret)
- return ret;
-
- }
- break;
-
- case e_gras_datadesc_type_cat_union:
- if (d1->category.union_data.selector != d2->category.union_data.selector)
- return d1->category.union_data.selector > d2->category.union_data.selector ? 1 : -1;
-
- if (gras_dynar_length(d1->category.union_data.fields) !=
- gras_dynar_length(d2->category.union_data.fields))
- return gras_dynar_length(d1->category.union_data.fields) >
- gras_dynar_length(d2->category.union_data.fields) ?
- 1 : -1;
-
- gras_dynar_foreach(d1->category.union_data.fields, cpt, field1) {
-
- gras_dynar_get(d2->category.union_data.fields, cpt, field2);
- gras_datadesc_by_id(field1->code,&field_desc_1); /* FIXME: errcode ignored */
- gras_datadesc_by_id(field2->code,&field_desc_2);
- ret = gras_datadesc_type_cmp(field_desc_1,field_desc_2);
- if (ret)
- return ret;
-
- }
- break;
-
-
- case e_gras_datadesc_type_cat_ref:
- if (d1->category.ref_data.selector != d2->category.ref_data.selector)
- return d1->category.ref_data.selector > d2->category.ref_data.selector ? 1 : -1;
-
- if (d1->category.ref_data.code != d2->category.ref_data.code)
- return d1->category.ref_data.code > d2->category.ref_data.code ? 1 : -1;
- break;
-
- case e_gras_datadesc_type_cat_array:
- if (d1->category.array_data.code != d2->category.array_data.code)
- return d1->category.array_data.code > d2->category.array_data.code ? 1 : -1;
-
- if (d1->category.array_data.fixed_size != d2->category.array_data.fixed_size)
- return d1->category.array_data.fixed_size > d2->category.array_data.fixed_size ? 1 : -1;
-
- if (d1->category.array_data.dynamic_size != d2->category.array_data.dynamic_size)
- return d1->category.array_data.dynamic_size > d2->category.array_data.dynamic_size ? 1 : -1;
-
- break;
-
- case e_gras_datadesc_type_cat_ignored:
- /* That's ignored... */
- default:
- /* two stupidly created ddt are equally stupid ;) */
- break;
- }
- return 0;
-
-}
-
-/**
- * gras_datadesc_cpy:
- *
- * Copy the data pointed by src and described by type
- * to a new location, and store a pointer to it in dst.
- *
- */
-gras_error_t gras_datadesc_cpy(gras_datadesc_type_t *type,
- void *src,
- void **dst) {
- RAISE_UNIMPLEMENTED;
-}
-
-static gras_error_t
-gras_datadesc_send_rec(gras_socket_t *sock,
- gras_dd_cbps_t *state,
- gras_dict_t *refs,
- gras_datadesc_type_t *type,
- char *data) {
-
- gras_error_t errcode;
- int cpt;
- gras_datadesc_type_t *sub_type; /* type on which we recurse */
-
- VERB2("Send a %s (%s)",
- type->name, gras_datadesc_cat_names[type->category_code]);
-
- if (type->pre) {
- type->pre(state,type,data);
- }
-
- switch (type->category_code) {
- case e_gras_datadesc_type_cat_scalar:
- TRY(gras_trp_chunk_send(sock, data, 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_data;
-
- struct_data = type->category.struct_data;
- VERB1(">> Send all fields of the structure %s",type->name);
- gras_dynar_foreach(struct_data.fields, cpt, field) {
- field_data = data;
- field_data += field->offset[GRAS_THISARCH];
-
- TRY(gras_datadesc_by_id(field->code, &sub_type));
-
- if (field->pre)
- field->pre(state,sub_type,field_data);
-
- TRY(gras_datadesc_send_rec(sock,state,refs,sub_type, field_data));
-
- if (field->post)
- field->post(state,sub_type,field_data);
- }
- VERB1("<< 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;
- int field_num;
-
- union_data = type->category.union_data;
-
- /* retrieve the field number */
- field_num = union_data.selector(state, type, data);
-
- gras_assert1(field_num > 0,
- "union field selector of %s gave a negative value",
- type->name);
-
- gras_assert3(field_num < gras_dynar_length(union_data.fields),
- "union field selector of %s returned %d but there is only %d fields",
- type->name, field_num, gras_dynar_length(union_data.fields));
-
- /* Send the field number */
- TRY(gras_dd_send_int(sock, field_num));
-
- /* Send the content */
- gras_dynar_get(union_data.fields, field_num, field);
- TRY(gras_datadesc_by_id(field->code, &sub_type));
-
- if (field->pre)
- field->pre(state,sub_type,data);
-
- TRY(gras_datadesc_send_rec(sock,state,refs, sub_type, data));
-
- if (field->post)
- field->post(state,sub_type,data);
-
- break;
- }
-
- case e_gras_datadesc_type_cat_ref: {
- gras_dd_cat_ref_t ref_data;
- int ref_code;
-
- void **ref=(void**)data;
- void *dummy;
-
- ref_data = type->category.ref_data;
-
- /* Detect the referenced type and send it to peer if needed */
- ref_code = ref_data.code;
- if (ref_code < 0) {
- ref_code = ref_data.selector(state,type,data);
- TRY(gras_dd_send_int(sock, ref_code));
- }
-
- /* Send the actual value of the pointer for cycle handling */
- if (!pointer_type)
- TRY(gras_datadesc_by_name("data pointer", &pointer_type));
- TRY(gras_trp_chunk_send(sock, (char*)data,
- pointer_type->size[GRAS_THISARCH]));
-
- /* Send the pointed data only if not already sent */
- if (*(void**)data == NULL) {
- VERB0("Not sending NULL referenced data");
- break;
- }
- errcode = gras_dict_retrieve_ext(refs,(char*)ref, sizeof(void*), &dummy);
- if (errcode == mismatch_error) {
- VERB1("Sending data referenced at %p", *ref);
- TRY(gras_dict_insert_ext(refs, (char*)ref, sizeof(void*), ref, NULL));
- TRY(gras_datadesc_by_id(ref_code, &sub_type));
- TRY(gras_datadesc_send_rec(sock,state,refs, sub_type, *ref));
-
- } else if (errcode == no_error) {
- VERB1("Not sending data referenced at %p (already done)", *ref);
- } else {
- return errcode;
- }
-
- break;
- }
-
- case e_gras_datadesc_type_cat_array: {
- gras_dd_cat_array_t array_data;
- long 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 <= 0) {
- count = array_data.dynamic_size(state,type,data);
- gras_assert1(count >=0,
- "Invalid (negative) array size for type %s",type->name);
- TRY(gras_dd_send_int(sock, count));
- }
-
- /* send the content */
- TRY(gras_datadesc_by_id(array_data.code, &sub_type));
- elm_size = sub_type->aligned_size[GRAS_THISARCH];
- for (cpt=0; cpt<count; cpt++) {
- TRY(gras_datadesc_send_rec(sock,state,refs, sub_type, ptr));
- ptr += elm_size;
- }
- break;
- }
-
- default:
- gras_assert0(0, "Invalid type");
- }
-
- if (type->post) {
- type->post(state,type,data);
- }
-
- return no_error;
-}
-
-/**
- * gras_datadesc_send:
- *
- * Copy the data pointed by src and described by type to the socket
- *
- */
-gras_error_t gras_datadesc_send(gras_socket_t *sock,
- gras_datadesc_type_t *type,
- void *src) {
-
- gras_error_t errcode;
- gras_dd_cbps_t *state = NULL;
- gras_dict_t *refs; /* all references already sent */
-
- TRY(gras_dict_new(&refs));
- TRY(gras_dd_cbps_new(&state));
-
- errcode = gras_datadesc_send_rec(sock,state,refs,type,(char*)src);
-
- gras_dict_free(&refs);
- gras_dd_cbps_free(&state);
-
- return errcode;
-}
-
-/**
- * gras_datadesc_recv_rec:
- *
- * Do the data reception job recursively.
- */
-gras_error_t
-gras_datadesc_recv_rec(gras_socket_t *sock,
- gras_dd_cbps_t *state,
- gras_dict_t *refs,
- gras_datadesc_type_t *type,
- int r_arch,
- char **r_data,
- long int r_lgr,
- char **dst) {
-
- gras_error_t errcode;
- char *l_data = *dst; /* dereference to avoid typo */
- int cpt;
- gras_datadesc_type_t *sub_type;
-
- VERB1("Recv a %s", type->name);
-
- switch (type->category_code) {
- case e_gras_datadesc_type_cat_scalar:
- if (!l_data) {
- TRY(gras_dd_alloc_ref(refs,type->size[GRAS_THISARCH],r_data,r_lgr, dst));
- l_data = *dst;
- }
-
- if (type->size[GRAS_THISARCH] >= type->size[r_arch]) {
- TRY(gras_trp_chunk_recv(sock, (char*)l_data, type->size[r_arch]));
- TRY(gras_dd_convert_elm(type,r_arch, l_data,l_data));
- } else {
- void *ptr = NULL;
- ptr = malloc((size_t)type->size[r_arch]);
- TRY(gras_trp_chunk_recv(sock, (char*)ptr, type->size[r_arch]));
- TRY(gras_dd_convert_elm(type,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;
-
- if (!l_data) {
- TRY(gras_dd_alloc_ref(refs,type->size[GRAS_THISARCH],r_data,r_lgr, dst));
- l_data = *dst;
- }
-
- VERB1(">> Receive all fields of the structure %s",type->name);
- gras_dynar_foreach(struct_data.fields, cpt, field) {
- char *field_data = l_data + field->offset[GRAS_THISARCH];
-
- TRY(gras_datadesc_by_id(field->code, &sub_type));
-
- TRY(gras_datadesc_recv_rec(sock,state,refs, sub_type,
- r_arch,NULL,0,
- &field_data));
- }
- VERB1("<< 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;
- int field_num;
-
- union_data = type->category.union_data;
-
- if (!l_data) {
- TRY(gras_dd_alloc_ref(refs,type->size[GRAS_THISARCH],r_data,r_lgr, dst));
- l_data = *dst;
- }
-
- /* retrieve the field number */
- TRY(gras_dd_recv_int(sock, r_arch, &field_num));
- if (field_num < 0)
- RAISE1(mismatch_error,
- "Received union field for %s is negative", type->name);
- if (field_num < gras_dynar_length(union_data.fields))
- RAISE3(mismatch_error,
- "Received union field for %s is %d but there is only %d fields",
- type->name, field_num, gras_dynar_length(union_data.fields));
-
- /* Recv the content */
- gras_dynar_get(union_data.fields, field_num, field);
- TRY(gras_datadesc_by_id(field->code, &sub_type));
-
- TRY(gras_datadesc_recv_rec(sock,state,refs, sub_type,
- r_arch,NULL,0,
- dst));
- break;
- }
-
- case e_gras_datadesc_type_cat_ref: {
- char **r_ref = NULL;
- char **l_ref = NULL;
- gras_dd_cat_ref_t ref_data;
- int ref_code;
-
- ref_data = type->category.ref_data;
-
- /* Get the referenced type locally or from peer */
- ref_code = ref_data.code;
- if (ref_code < 0)
- TRY(gras_dd_recv_int(sock, r_arch, &ref_code));
-
- /* Get the actual value of the pointer for cycle handling */
- if (!pointer_type)
- TRY(gras_datadesc_by_name("data pointer", &pointer_type));
-
- if (! (r_ref = malloc((size_t)pointer_type->size[r_arch])) )
- RAISE_MALLOC;
- TRY(gras_trp_chunk_recv(sock, (char*)r_ref,
- pointer_type->size[r_arch]));
-
- if (!l_data) {
- TRY(gras_dd_alloc_ref(refs,type->size[GRAS_THISARCH],r_data,r_lgr, dst));
- l_data = *dst;
- }
-
- /* Receive the pointed data only if not already sent */
- if (gras_dd_is_r_null(r_ref, pointer_type->size[r_arch])) {
- VERB1("Not receiving data remotely referenced at %p since it's NULL",
- *(void **)r_ref);
- *(void**)l_data = NULL;
- break;
- }
- errcode = gras_dict_retrieve_ext(refs,
- (char*)r_ref, pointer_type->size[r_arch],
- (void**)&l_ref);
-
-
- if (errcode == mismatch_error) {
- void *l_referenced=NULL;
- VERB1("Receiving data remotely referenced at %p", *(void**)r_ref);
-
- TRY(gras_datadesc_by_id(ref_code, &sub_type));
- // DEBUG2("l_ref= %p; &l_ref=%p",l_referenced,&l_referenced);
- TRY(gras_datadesc_recv_rec(sock,state,refs, sub_type,
- r_arch,r_ref,pointer_type->size[r_arch],
- (char**)&l_referenced));
- *(void**)l_data=l_referenced;
-
- } else if (errcode == no_error) {
- VERB1("NOT receiving data remotely referenced at %p (already done). ",
- *(void**)r_ref);
-
- VERB2("l_ref=%p; *l_ref=%p", l_ref,*l_ref);
-
- *(void**)l_data=*l_ref;
-
- } else {
- return errcode;
- }
- VERB1("*l_data=%p",*(void**)l_data);
- 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 peer */
- count = array_data.fixed_size;
- if (count <= 0)
- TRY(gras_dd_recv_int(sock, r_arch, &count));
- if (count < 0)
- RAISE1(mismatch_error,
- "Invalid (negative) array size for type %s",type->name);
-
- /* receive the content */
- TRY(gras_datadesc_by_id(array_data.code, &sub_type));
- elm_size = sub_type->aligned_size[GRAS_THISARCH];
-
- if (!l_data) {
- TRY(gras_dd_alloc_ref(refs,elm_size*count,r_data,r_lgr, dst));
- l_data = *dst;
- }
-
- ptr = l_data;
- for (cpt=0; cpt<count; cpt++) {
- TRY(gras_datadesc_recv_rec(sock,state,refs, sub_type,
- r_arch, NULL, 0, &ptr));
- ptr += elm_size;
- }
- break;
- }
-
- default:
- gras_assert0(0, "Invalid type");
- }
-
- return no_error;
-}
-
-/**
- * gras_datadesc_recv:
- *
- * Get an instance of the datatype described by @type from the @socket,
- * and store a pointer to it in @dst
- *
- */
-gras_error_t
-gras_datadesc_recv(gras_socket_t *sock,
- gras_datadesc_type_t *type,
- int r_arch,
- void **dst) {
-
- gras_error_t errcode;
- gras_dd_cbps_t *state = NULL; /* callback persistent state */
- gras_dict_t *refs; /* all references already sent */
-
- TRY(gras_dict_new(&refs));
- TRY(gras_dd_cbps_new(&state));
- if (*dst)
- VERB0("'*dst' not NULL in datadesc_recv. Data to be copied there without malloc");
-
- errcode = gras_datadesc_recv_rec(sock, state, refs, type,
- r_arch, NULL, 0,
- (char **) dst);
-
- gras_dict_free(&refs);
- gras_dd_cbps_free(&state);
-
- return errcode;
-}
