mirror of https://github.com/BOINC/boinc.git
110 lines
3.2 KiB
C
110 lines
3.2 KiB
C
// Berkeley Open Infrastructure for Network Computing
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// http://boinc.berkeley.edu
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// Copyright (C) 2008 University of California
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//
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// This is free software; you can redistribute it and/or
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// modify it under the terms of the GNU Lesser General Public
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// License as published by the Free Software Foundation;
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// either version 2.1 of the License, or (at your option) any later version.
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//
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// This software is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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// See the GNU Lesser General Public License for more details.
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//
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// To view the GNU Lesser General Public License visit
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// http://www.gnu.org/copyleft/lesser.html
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// or write to the Free Software Foundation, Inc.,
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// 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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// graphics-related utilities, used both from main applications
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// (set create shared mem) and by the graphics app
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#ifdef _WIN32
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#include "boinc_win.h"
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#elif (!defined(__EMX__))
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#include <sys/stat.h>
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#endif
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#include "shmem.h"
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#include "filesys.h"
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#include "app_ipc.h"
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#include "boinc_api.h"
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#include "graphics2.h"
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#ifdef __EMX__
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static key_t get_shmem_name(char* prog_name) {
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char cwd[256], path[256];
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boinc_getcwd(cwd);
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sprintf(path, "%s/init_data.xml", cwd);
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return ftok(path, 2);
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}
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#else
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// Unix/Linux/Mac applications always use mmap() for gfx communication
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//
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static void get_shmem_name(char* prog_name, char* shmem_name) {
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APP_INIT_DATA aid;
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int retval = boinc_get_init_data(aid);
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if (retval) aid.slot = 0;
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sprintf(shmem_name, "boinc_%s_%d", prog_name, aid.slot);
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}
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#endif
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void* boinc_graphics_make_shmem(char* prog_name, int size) {
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#ifdef _WIN32
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HANDLE shmem_handle;
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char shmem_name[256];
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void* p;
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get_shmem_name(prog_name, shmem_name);
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shmem_handle = create_shmem(shmem_name, size, &p, false);
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if (shmem_handle == NULL) return 0;
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return p;
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#else
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void* p;
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#ifdef __EMX__
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key_t key = get_shmem_name(prog_name);
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int retval = create_shmem(key, size, 0, &p);
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#else
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// V6 Unix/Linux/Mac applications always use mmap() shared memory for graphics communication
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char shmem_name[256];
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get_shmem_name(prog_name, shmem_name);
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int retval = create_shmem_mmap(shmem_name, size, &p);
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// Graphics app may be run by a different user & group than worker app
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// Although create_shmem passed 0666 to open(), it was modified by umask
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if (retval == 0) chmod(shmem_name, 0666);
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#endif
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if (retval) return 0;
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return p;
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#endif
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}
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#ifdef _WIN32
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void* boinc_graphics_get_shmem(char* prog_name) {
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HANDLE shmem_handle;
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char shmem_name[256];
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void* p;
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get_shmem_name(prog_name, shmem_name);
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shmem_handle = attach_shmem(shmem_name, &p);
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if (shmem_handle == NULL) {
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return 0;
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}
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return p;
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}
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#else
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void* boinc_graphics_get_shmem(char* prog_name) {
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void* p;
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int retval;
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#ifdef __EMX__
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key_t key = get_shmem_name(prog_name);
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retval = attach_shmem(key, &p);
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#else
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// V6 Unix/Linux/Mac applications always use mmap() shared memory for graphics communication
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char shmem_name[256];
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get_shmem_name(prog_name, shmem_name);
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retval = attach_shmem_mmap(shmem_name, &p);
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#endif
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if (retval) return 0;
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return p;
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}
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#endif
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