uv_lib_t *jl_load_dynamic_library(char *modname)
{
int error;
char *ext;
char path[PATHBUF];
int i;
uv_lib_t *handle=malloc(sizeof(uv_lib_t));
handle->errmsg=NULL;
if (modname == NULL) {
#ifdef _WIN32
if(!GetModuleHandleExA(GET_MODULE_HANDLE_EX_FLAG_FROM_ADDRESS | GET_MODULE_HANDLE_EX_FLAG_UNCHANGED_REFCOUNT,
(LPCSTR)(&jl_load_dynamic_library),
&handle->handle))
jl_errorf("could not load base module", modname);
#else
handle->handle = dlopen(NULL,RTLD_NOW);
#endif
goto done;
}
#ifdef _WIN32
else if (modname[1] == ':') {
#else
else if (modname[0] == '/') {
#endif
error = jl_uv_dlopen(modname,handle);
if (!error) goto done;
}
for(i=0; i < N_EXTENSIONS; i++) {
ext = extensions[i];
path[0] = '\0';
handle->handle = NULL;
/* try loading from standard library path */
snprintf(path, PATHBUF, "%s%s", modname, ext);
error = jl_uv_dlopen(path, handle);
if (!error) goto done;
}
#if defined(__linux__)
char *soname = jl_lookup_soname(modname, strlen(modname));
error = (soname==NULL) || jl_uv_dlopen(soname, handle);
if (!error) goto done;
#endif
//JL_PRINTF(JL_STDERR, "could not load module %s (%d): %s\n", modname, error, uv_dlerror(handle));
jl_errorf("could not load module %s: %s", modname, uv_dlerror(handle));
uv_dlclose(handle);
free(handle);
return NULL;
done:
return handle;
}
void *jl_dlsym_e(uv_lib_t *handle, char *symbol)
{
void *ptr;
int error=uv_dlsym(handle, symbol, &ptr);
if(error) ptr=NULL;
return ptr;
}
static uv_lib_t *jl_load_dynamic_library_(const char *modname, unsigned flags, int throw_err)
{
int error;
char *ext;
char path[PATHBUF];
int i;
uv_lib_t *handle = (uv_lib_t*)malloc(sizeof(uv_lib_t));
handle->errmsg = NULL;
if (modname == NULL) {
#ifdef _OS_WINDOWS_
if (!GetModuleHandleExW(GET_MODULE_HANDLE_EX_FLAG_FROM_ADDRESS | GET_MODULE_HANDLE_EX_FLAG_UNCHANGED_REFCOUNT,
(LPCWSTR)(&jl_load_dynamic_library),
&handle->handle))
jl_errorf("could not load base module", modname);
#else
handle->handle = dlopen(NULL,RTLD_NOW);
#endif
goto done;
}
#ifdef _OS_WINDOWS_
else if (modname[1] == ':') {
#else
else if (modname[0] == '/') {
#endif
error = jl_uv_dlopen(modname,handle,flags);
if (!error) goto done;
}
else if (jl_base_module != NULL) {
jl_array_t *DL_LOAD_PATH = (jl_array_t*)jl_get_global(jl_base_module, jl_symbol("DL_LOAD_PATH"));
if (DL_LOAD_PATH != NULL) {
size_t j;
for (j = 0; j < jl_array_len(DL_LOAD_PATH); j++) {
char *dl_path = jl_string_data(jl_cell_data(DL_LOAD_PATH)[j]);
size_t len = strlen(dl_path);
if (len == 0)
continue;
for(i=0; i < N_EXTENSIONS; i++) {
ext = extensions[i];
path[0] = '\0';
handle->handle = NULL;
if (dl_path[len-1] == PATHSEPSTRING[0])
snprintf(path, PATHBUF, "%s%s%s", dl_path, modname, ext);
else
snprintf(path, PATHBUF, "%s" PATHSEPSTRING "%s%s", dl_path, modname, ext);
if (handle->errmsg) {
uv_dlclose(handle);
}
error = jl_uv_dlopen(path, handle, flags);
if (!error) goto done;
}
}
}
}
for(i=0; i < N_EXTENSIONS; i++) {
ext = extensions[i];
path[0] = '\0';
handle->handle = NULL;
/* try loading from standard library path */
snprintf(path, PATHBUF, "%s%s", modname, ext);
if (handle->errmsg) {
uv_dlclose(handle);
}
error = jl_uv_dlopen(path, handle, flags);
if (!error) goto done;
}
#if defined(__linux__) || defined(__FreeBSD__)
{
const char *soname = jl_lookup_soname(modname, strlen(modname));
if (handle->errmsg) {
free(handle->errmsg);
handle->errmsg = NULL;
}
error = (soname==NULL) || jl_uv_dlopen(soname, handle, flags);
if (!error) goto done;
}
#endif
if (throw_err) {
//jl_printf(JL_STDERR, "could not load module %s (%d): %s\n", modname, error, uv_dlerror(handle));
jl_errorf("could not load module %s: %s", modname, uv_dlerror(handle));
}
uv_dlclose(handle);
free(handle);
return NULL;
done:
return handle;
}
jl_uv_libhandle jl_load_dynamic_library_e(const char *modname, unsigned flags)
{
return (jl_uv_libhandle) jl_load_dynamic_library_(modname, flags, 0);
}
jl_uv_libhandle jl_load_dynamic_library(const char *modname, unsigned flags)
{
return (jl_uv_libhandle) jl_load_dynamic_library_(modname, flags, 1);
}
void *jl_dlsym_e(jl_uv_libhandle handle, const char *symbol)
{
void *ptr;
int error=uv_dlsym((uv_lib_t *) handle, symbol, &ptr);
if (error) ptr=NULL;
return ptr;
}
static uv_lib_t *jl_load_dynamic_library_(const char *modname, unsigned flags, int throw_err)
{
int error;
char *ext;
char path[PATHBUF];
int i;
uv_stat_t stbuf;
uv_lib_t *handle = (uv_lib_t*)malloc(sizeof(uv_lib_t));
handle->errmsg = NULL;
/*
this branch returns handle of libjulia
*/
if (modname == NULL) {
#ifdef _OS_WINDOWS_
if (!GetModuleHandleExW(GET_MODULE_HANDLE_EX_FLAG_FROM_ADDRESS | GET_MODULE_HANDLE_EX_FLAG_UNCHANGED_REFCOUNT,
(LPCWSTR)(&jl_load_dynamic_library),
&handle->handle)) {
free(handle);
jl_error("could not load base module");
}
#else
handle->handle = dlopen(NULL,RTLD_NOW);
#endif
goto done;
}
/*
this branch shortcuts absolute paths
*/
#ifdef _OS_WINDOWS_
else if (modname[1] == ':') {
#else
else if (modname[0] == '/') {
#endif
error = jl_uv_dlopen(modname,handle,flags);
if (!error)
goto done;
// bail out and show the error if file actually exists
if (jl_stat(modname, (char*)&stbuf) == 0)
goto notfound;
if (handle->errmsg)
uv_dlclose(handle);
}
/*
this branch permutes all base paths in DL_LOAD_PATH with all extensions
note: skip when !jl_base_module to avoid UndefVarError(:DL_LOAD_PATH)
*/
else if (jl_base_module != NULL) {
jl_array_t *DL_LOAD_PATH = (jl_array_t*)jl_get_global(jl_base_module, jl_symbol("DL_LOAD_PATH"));
if (DL_LOAD_PATH != NULL) {
size_t j;
for (j = 0; j < jl_array_len(DL_LOAD_PATH); j++) {
char *dl_path = jl_string_data(jl_cell_data(DL_LOAD_PATH)[j]);
size_t len = strlen(dl_path);
if (len == 0)
continue;
for(i=0; i < N_EXTENSIONS; i++) {
ext = extensions[i];
path[0] = '\0';
handle->handle = NULL;
if (dl_path[len-1] == PATHSEPSTRING[0])
snprintf(path, PATHBUF, "%s%s%s", dl_path, modname, ext);
else
snprintf(path, PATHBUF, "%s" PATHSEPSTRING "%s%s", dl_path, modname, ext);
// free handle->errmsg, else it will leak on next uv_dlopen
if (handle->errmsg)
uv_dlclose(handle);
error = jl_uv_dlopen(path, handle, flags);
if (!error)
goto done;
// bail out and show the error if file actually exists
if (jl_stat(path, (char*)&stbuf) == 0)
goto notfound;
}
}
}
}
// now fall back and look in default library paths, for all extensions
for(i=0; i < N_EXTENSIONS; i++) {
ext = extensions[i];
path[0] = '\0';
handle->handle = NULL;
snprintf(path, PATHBUF, "%s%s", modname, ext);
if (handle->errmsg)
uv_dlclose(handle);
error = jl_uv_dlopen(path, handle, flags);
if (!error)
goto done;
}
#if defined(__linux__) || defined(__FreeBSD__)
// check map of versioned libs from "libX" to full soname "libX.so.ver"
{
const char *soname = jl_lookup_soname(modname, strlen(modname));
error = (soname==NULL) || jl_uv_dlopen(soname, handle, flags);
if (!error)
goto done;
}
#endif
notfound:
// copy the error message into the path buffer so we can free the lib handle
path[0] = '\0';
snprintf(path, PATHBUF, "%s", uv_dlerror(handle));
uv_dlclose(handle);
free(handle);
if (throw_err)
jl_errorf("could not load library '%s'\n%s", modname, path);
return NULL;
done:
return handle;
}
jl_uv_libhandle jl_load_dynamic_library_e(const char *modname, unsigned flags)
{
return (jl_uv_libhandle) jl_load_dynamic_library_(modname, flags, 0);
}
jl_uv_libhandle jl_load_dynamic_library(const char *modname, unsigned flags)
{
return (jl_uv_libhandle) jl_load_dynamic_library_(modname, flags, 1);
}
void *jl_dlsym_e(jl_uv_libhandle handle, const char *symbol)
{
void *ptr;
int error = uv_dlsym((uv_lib_t *) handle, symbol, &ptr);
if (error) ptr=NULL;
return ptr;
}