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/******************************************************************************
* Project: PROJ.4
* Purpose: Memory management for proj.4.
* This version includes an implementation of generic destructors,
* for memory deallocation for the large majority of PJ-objects
* that do not allocate anything else than the PJ-object itself,
* and its associated opaque object - i.e. no additional malloc'ed
* memory inside the opaque object.
*
* Author: Gerald I. Evenden (Original proj.4 author),
* Frank Warmerdam (2000) pj_malloc?
* Thomas Knudsen (2016) - freeup/dealloc parts
*
******************************************************************************
* Copyright (c) 2000, Frank Warmerdam
* Copyright (c) 2016, Thomas Knudsen / SDFE
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included
* in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*****************************************************************************/
/* allocate and deallocate memory */
/* These routines are used so that applications can readily replace
** projection system memory allocation/deallocation call with custom
** application procedures. */
#include <errno.h>
#include <stddef.h>
#include <stdlib.h>
#include <string.h>
#include <new>
#include "proj.h"
#include "proj_internal.h"
#include "grids.hpp"
#include "filemanager.hpp"
using namespace NS_PROJ;
/**********************************************************************/
char *pj_strdup(const char *str)
/**********************************************************************/
{
size_t len = strlen(str) + 1;
char *dup = static_cast<char*>(malloc(len));
if (dup)
memcpy(dup, str, len);
return dup;
}
/*****************************************************************************/
void *free_params (PJ_CONTEXT *ctx, paralist *start, int errlev) {
/*****************************************************************************
Companion to pj_default_destructor (below). Deallocates a linked list
of "+proj=xxx" initialization parameters.
Also called from pj_init_ctx when encountering errors before the PJ
proper is allocated.
******************************************************************************/
paralist *t, *n;
for (t = start; t; t = n) {
n = t->next;
free(t);
}
proj_context_errno_set (ctx, errlev);
return (void *) nullptr;
}
/************************************************************************/
/* proj_destroy() */
/* */
/* This is the application callable entry point for destroying */
/* a projection definition. It does work generic to all */
/* projection types, and then calls the projection specific */
/* free function, P->destructor(), to do local work. */
/* In most cases P->destructor()==pj_default_destructor. */
/************************************************************************/
PJ *proj_destroy(PJ *P) {
if (nullptr==P || !P->destructor)
return nullptr;
/* free projection parameters - all the hard work is done by */
/* pj_default_destructor, which is supposed */
/* to be called as the last step of the local destructor */
/* pointed to by P->destructor. In most cases, */
/* pj_default_destructor actually *is* what is pointed to */
P->destructor (P, proj_errno(P));
return nullptr;
}
/*****************************************************************************/
// cppcheck-suppress uninitMemberVar
PJconsts::PJconsts(): destructor(pj_default_destructor) {}
/*****************************************************************************/
/*****************************************************************************/
PJ *pj_new() {
/*****************************************************************************/
return new(std::nothrow) PJ();
}
/*****************************************************************************/
PJ *pj_default_destructor (PJ *P, int errlev) { /* Destructor */
/*****************************************************************************
Does memory deallocation for "plain" PJ objects, i.e. that vast majority
of PJs where the opaque object does not contain any additionally
allocated memory below the P->opaque level.
******************************************************************************/
/* Even if P==0, we set the errlev on pj_error and the default context */
/* Note that both, in the multithreaded case, may then contain undefined */
/* values. This is expected behavior. For MT have one ctx per thread */
if (0!=errlev)
proj_context_errno_set (pj_get_ctx(P), errlev);
if (nullptr==P)
return nullptr;
free(P->def_size);
free(P->def_shape);
free(P->def_spherification);
free(P->def_ellps);
delete static_cast<ListOfHGrids*>(P->hgrids_legacy);
delete static_cast<ListOfVGrids*>(P->vgrids_legacy);
/* We used to call free( P->catalog ), but this will leak */
/* memory. The safe way to clear catalog and grid is to call */
/* pj_gc_unloadall(pj_get_default_ctx()); and freeate_grids(); */
/* TODO: we should probably have a public pj_cleanup() method to do all */
/* that */
/* free the interface to Charles Karney's geodesic library */
free( P->geod );
/* free parameter list elements */
free_params (pj_get_ctx(P), P->params, errlev);
free (P->def_full);
/* free the cs2cs emulation elements */
proj_destroy (P->axisswap);
proj_destroy (P->helmert);
proj_destroy (P->cart);
proj_destroy (P->cart_wgs84);
proj_destroy (P->hgridshift);
proj_destroy (P->vgridshift);
free (static_cast<struct pj_opaque*>(P->opaque));
delete P;
return nullptr;
}
/*****************************************************************************/
void proj_cleanup() {
/*****************************************************************************/
pj_clear_initcache();
FileManager::clearMemoryCache();
pj_clear_hgridshift_knowngrids_cache();
pj_clear_vgridshift_knowngrids_cache();
}
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