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/******************************************************************************
*
* Project: PROJ
* Purpose: Test behavior of database access across fork()
* Author: Even Rouault <even dot rouault at spatialys dot com>
*
******************************************************************************
* Copyright (c) 2021, Even Rouault <even dot rouault at spatialys dot com>
*
* 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.
****************************************************************************/
#if defined(_WIN32) && defined(PROJ_HAS_PTHREADS)
#undef PROJ_HAS_PTHREADS
#endif
#ifdef PROJ_HAS_PTHREADS
#include <stdio.h>
#include <stdlib.h>
#include <sys/types.h>
#include <sys/wait.h>
#include <unistd.h>
#include "proj.h"
int main() {
PJ_CONTEXT *ctxt = proj_context_create();
PJ_CONTEXT *ctxt2 = proj_context_create();
/* Cause database initialization */
{
PJ *P = proj_create(ctxt, "EPSG:4326");
if (P == NULL) {
proj_context_destroy(ctxt);
return 1;
}
proj_destroy(P);
}
{
PJ *P = proj_create(ctxt2, "EPSG:4326");
if (P == NULL) {
proj_context_destroy(ctxt);
proj_context_destroy(ctxt2);
return 1;
}
proj_destroy(P);
}
for (int iters = 0; iters < 100; ++iters) {
pid_t children[4];
for (int i = 0; i < 4; i++) {
children[i] = fork();
if (children[i] < 0) {
fprintf(stderr, "fork() failed\n");
return 1;
}
if (children[i] == 0) {
{
PJ *P = proj_create(ctxt, "EPSG:3067");
if (P == NULL)
_exit(1);
proj_destroy(P);
}
{
PJ *P = proj_create(ctxt2, "EPSG:32631");
if (P == NULL)
_exit(1);
proj_destroy(P);
}
_exit(0);
}
}
for (int i = 0; i < 4; i++) {
int status = 0;
waitpid(children[i], &status, 0);
if (status != 0) {
fprintf(stderr, "Error in child\n");
return 1;
}
}
}
proj_context_destroy(ctxt);
proj_context_destroy(ctxt2);
return 0;
}
#else
int main() { return 0; }
#endif
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