void *halide_get_symbol(const char *name) {
// Try dlsym first. We need to try both RTLD_SELF and
// RTLD_DEFAULT. Sometimes, RTLD_SELF finds a symbol when
// RTLD_DEFAULT does not. This is surprising, I *think* RLTD_SELF
// should search a subset of the symbols searched by
// RTLD_DEFAULT...
void *def = dlsym(RTLD_SELF, name);
if (def) {
return def;
}
def = dlsym(RTLD_DEFAULT, name);
if (def) {
return def;
}
if (!use_dlopenbuf()) {
// If we aren't using dlopenbuf, also try mmap_dlsym
def = mmap_dlsym(RTLD_DEFAULT, name);
if (def) {
return def;
}
}
// dlsym has some very unpredictable behavior that makes
// it randomly unable to find symbols. To mitigate this, check our known symbols mapping.
return get_known_symbol(name);
}
handle_t get_symbol(handle_t module_ptr, const char* name, int nameLen, bool use_dlopenbuf) {
if (use_dlopenbuf) {
return reinterpret_cast<handle_t>(dlsym(reinterpret_cast<void *>(module_ptr), name));
} else {
return reinterpret_cast<handle_t>(mmap_dlsym(reinterpret_cast<void *>(module_ptr), name));
}
}
int halide_hexagon_remote_get_symbol_v4(handle_t module_ptr, const char* name, int nameLen, handle_t *sym_ptr) {
if (use_dlopenbuf()) {
*sym_ptr = reinterpret_cast<handle_t>(dlsym(reinterpret_cast<void*>(module_ptr), name));
} else {
*sym_ptr= reinterpret_cast<handle_t>(mmap_dlsym(reinterpret_cast<void*>(module_ptr), name));
}
return *sym_ptr != 0 ? 0 : -1;
}
