mirror of https://github.com/BOINC/boinc.git
83 lines
2.0 KiB
C
83 lines
2.0 KiB
C
#ifdef _WIN32
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#include "boinc_win.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 USE_FILE_MAPPED_SHMEM
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#include <sys/stat.h>
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#endif
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#if (defined(_WIN32) || defined(USE_FILE_MAPPED_SHMEM))
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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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boinc_get_init_data(aid);
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sprintf(shmem_name, "boinc_%s_%d", prog_name, aid.slot);
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}
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#else
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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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#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 USE_FILE_MAPPED_SHMEM
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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(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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#else
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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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#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) return 0;
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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 USE_FILE_MAPPED_SHMEM
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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(shmem_name, &p);
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#else
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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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#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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