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basic C interface, supporting int and float types
adding dlopen and dlsym functions, Pointer{T} julia type- Loading branch information
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,146 @@ | ||
| #include <stdlib.h> | ||
| #include <string.h> | ||
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|
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| #ifdef WIN32 | ||
| #include <malloc.h> | ||
| #include <windows.h> | ||
| #undef TRUE | ||
| #undef FALSE | ||
| #undef VOID | ||
| #define GET_FUNCTION_FROM_MODULE GetProcAddress | ||
| #define CLOSE_MODULE FreeLibrary | ||
| typedef HINSTANCE module_handle_t; | ||
| #define EXTENSION ".dll" | ||
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|
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| #elif defined(LINUX) | ||
| #include <unistd.h> | ||
| #include <dlfcn.h> | ||
| #define GET_FUNCTION_FROM_MODULE dlsym | ||
| #define CLOSE_MODULE dlclose | ||
| typedef void * module_handle_t; | ||
| #define EXTENSION ".so" | ||
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||
| #elif defined(MACOSX) || defined(MACINTEL) | ||
| #include <unistd.h> | ||
| #include <dlfcn.h> | ||
| #define GET_FUNCTION_FROM_MODULE dlsym | ||
| #define CLOSE_MODULE dlclose | ||
| typedef void * module_handle_t; | ||
| #define EXTENSION ".bundle" | ||
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|
||
| #endif | ||
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| #ifdef BOEHM_GC | ||
| #include <gc.h> | ||
| #endif | ||
| #include "llt.h" | ||
| #include "julia.h" | ||
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| #define PATHBUF 512 | ||
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| #ifdef WIN32 | ||
| #define STDCALL __stdcall | ||
| #else | ||
| #define STDCALL | ||
| #endif | ||
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| extern char *julia_home; | ||
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| void *jl_load_dynamic_library(char *fname) | ||
| { | ||
| module_handle_t handle; | ||
| char *modname; | ||
| char path[PATHBUF]; | ||
| path[0] = '\0'; | ||
| #ifdef WIN32 | ||
| LPVOID lpMsgBuf; | ||
| DWORD dw; | ||
| #endif | ||
|
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| modname = fname; | ||
| #ifndef WIN32 | ||
| if (modname == NULL) { | ||
| return (void*)dlopen(NULL, RTLD_NOW); | ||
| } | ||
| char *cwd; | ||
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| /* first, try load from current directory */ | ||
| if (modname[0] != '/') { | ||
| cwd = getcwd(path, PATHBUF); | ||
| if (cwd == NULL) | ||
| return NULL; | ||
| strncat(path, "/", PATHBUF-1-strlen(path)); | ||
| strncat(path, modname, PATHBUF-1-strlen(path)); | ||
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| handle = dlopen(path, RTLD_NOW); | ||
| if (handle == NULL) { | ||
| /* try julia home */ | ||
| if (julia_home) { | ||
| strncpy(path, julia_home, PATHBUF-1); | ||
| strncat(path, "/", PATHBUF-1-strlen(path)); | ||
| strncat(path, modname, PATHBUF-1-strlen(path)); | ||
| handle = dlopen(path, RTLD_NOW); | ||
| } | ||
| if (handle == NULL) { | ||
| //ios_printf(ios_stderr, "%s\n", dlerror()); | ||
| /* try loading from standard library path */ | ||
| handle = dlopen(modname, RTLD_NOW); | ||
| if (handle == NULL) { | ||
| ios_printf(ios_stderr, "%s\n", dlerror()); | ||
| jl_errorf("could not load module %s", fname); | ||
| } | ||
| } | ||
| } | ||
| } | ||
| else { | ||
| handle = dlopen(modname, RTLD_NOW); | ||
| if (handle == NULL) { | ||
| ios_printf(ios_stderr, "%s\n", dlerror()); | ||
| jl_errorf("could not load module %s", fname); | ||
| } | ||
| } | ||
| #else | ||
| if (modname == NULL) { | ||
| return (void*)GetModuleHandle(NULL); | ||
| } | ||
| handle = LoadLibrary(modname); | ||
| if (handle == NULL) { | ||
| if (julia_home) { | ||
| strncpy(path, julia_home, PATHBUF-1); | ||
| strncat(path, "\\", PATHBUF-1-strlen(path)); | ||
| strncat(path, modname, PATHBUF-1-strlen(path)); | ||
| handle = LoadLibrary(path); | ||
| } | ||
| if (handle == NULL) { | ||
| dw = GetLastError(); | ||
| FormatMessage(FORMAT_MESSAGE_ALLOCATE_BUFFER | | ||
| FORMAT_MESSAGE_FROM_SYSTEM, | ||
| NULL, | ||
| dw, | ||
| MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), | ||
| (LPTSTR) &lpMsgBuf, | ||
| 0, NULL ); | ||
| jl_errorf("could not load module %s: (%d) %s", fname, dw, | ||
| lpMsgBuf); | ||
| } | ||
| } | ||
| #endif | ||
|
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||
| return (void*)handle; | ||
| } | ||
|
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| void *jl_dlsym(void *handle, char *symbol) | ||
| { | ||
| #ifndef WIN32 | ||
| (void)dlerror(); | ||
| void *ptr = dlsym(handle, symbol); | ||
| char *msg = dlerror(); | ||
| if (msg != NULL) { | ||
| jl_errorf("dlsym: %s", msg); | ||
| } | ||
| return ptr; | ||
| #else | ||
| void *ptr = GET_FUNCTION_FROM_MODULE(handle, symbol); | ||
| #endif | ||
| return ptr; | ||
| } |
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