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Merge pull request #82603 from kkolyan/82601_fix_reload_loop
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Fix inconsistent `last_modified_time` handling in GDExtension
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akien-mga committed Oct 2, 2023
2 parents b926d32 + 43f92e4 commit 98d9119
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Showing 2 changed files with 40 additions and 39 deletions.
78 changes: 40 additions & 38 deletions core/extension/gdextension.cpp
Original file line number Diff line number Diff line change
Expand Up @@ -683,9 +683,45 @@ GDExtensionInterfaceFunctionPtr GDExtension::get_interface_function(StringName p
}

Error GDExtension::open_library(const String &p_path, const String &p_entry_symbol) {
Error err = OS::get_singleton()->open_dynamic_library(p_path, library, true, &library_path);
library_path = p_path;

String abs_path = ProjectSettings::get_singleton()->globalize_path(p_path);
#if defined(WINDOWS_ENABLED) && defined(TOOLS_ENABLED)
// If running on the editor on Windows, we copy the library and open the copy.
// This is so the original file isn't locked and can be updated by a compiler.
if (Engine::get_singleton()->is_editor_hint()) {
if (!FileAccess::exists(abs_path)) {
ERR_PRINT("GDExtension library not found: " + library_path);
return ERR_FILE_NOT_FOUND;
}

// Copy the file to the same directory as the original with a prefix in the name.
// This is so relative path to dependencies are satisfied.
String copy_path = abs_path.get_base_dir().path_join("~" + abs_path.get_file());

// If there's a left-over copy (possibly from a crash) then delete it first.
if (FileAccess::exists(copy_path)) {
DirAccess::remove_absolute(copy_path);
}

Error copy_err = DirAccess::copy_absolute(abs_path, copy_path);
if (copy_err) {
ERR_PRINT("Error copying GDExtension library: " + library_path);
return ERR_CANT_CREATE;
}
FileAccess::set_hidden_attribute(copy_path, true);

// Save the copied path so it can be deleted later.
temp_lib_path = copy_path;

// Use the copy to open the library.
abs_path = copy_path;
}
#endif

Error err = OS::get_singleton()->open_dynamic_library(abs_path, library, true);
if (err != OK) {
ERR_PRINT("GDExtension dynamic library not found: " + p_path);
ERR_PRINT("GDExtension dynamic library not found: " + abs_path);
return err;
}

Expand All @@ -694,7 +730,7 @@ Error GDExtension::open_library(const String &p_path, const String &p_entry_symb
err = OS::get_singleton()->get_dynamic_library_symbol_handle(library, p_entry_symbol, entry_funcptr, false);

if (err != OK) {
ERR_PRINT("GDExtension entry point '" + p_entry_symbol + "' not found in library " + p_path);
ERR_PRINT("GDExtension entry point '" + p_entry_symbol + "' not found in library " + abs_path);
OS::get_singleton()->close_dynamic_library(library);
return err;
}
Expand Down Expand Up @@ -884,41 +920,7 @@ Error GDExtensionResourceLoader::load_gdextension_resource(const String &p_path,
FileAccess::get_modified_time(p_path)));
#endif

String abs_path = ProjectSettings::get_singleton()->globalize_path(library_path);
#if defined(WINDOWS_ENABLED) && defined(TOOLS_ENABLED)
// If running on the editor on Windows, we copy the library and open the copy.
// This is so the original file isn't locked and can be updated by a compiler.
if (Engine::get_singleton()->is_editor_hint()) {
if (!FileAccess::exists(abs_path)) {
ERR_PRINT("GDExtension library not found: " + library_path);
return ERR_FILE_NOT_FOUND;
}

// Copy the file to the same directory as the original with a prefix in the name.
// This is so relative path to dependencies are satisfied.
String copy_path = abs_path.get_base_dir().path_join("~" + abs_path.get_file());

// If there's a left-over copy (possibly from a crash) then delete it first.
if (FileAccess::exists(copy_path)) {
DirAccess::remove_absolute(copy_path);
}

Error copy_err = DirAccess::copy_absolute(abs_path, copy_path);
if (copy_err) {
ERR_PRINT("Error copying GDExtension library: " + library_path);
return ERR_CANT_CREATE;
}
FileAccess::set_hidden_attribute(copy_path, true);

// Save the copied path so it can be deleted later.
p_extension->set_temp_library_path(copy_path);

// Use the copy to open the library.
abs_path = copy_path;
}
#endif

err = p_extension->open_library(abs_path, entry_symbol);
err = p_extension->open_library(library_path, entry_symbol);
if (err != OK) {
#if defined(WINDOWS_ENABLED) && defined(TOOLS_ENABLED)
// If the DLL fails to load, make sure that temporary DLL copies are cleaned up.
Expand Down
1 change: 0 additions & 1 deletion core/extension/gdextension.h
Original file line number Diff line number Diff line change
Expand Up @@ -119,7 +119,6 @@ class GDExtension : public Resource {
void close_library();

#if defined(WINDOWS_ENABLED) && defined(TOOLS_ENABLED)
void set_temp_library_path(const String &p_path) { temp_lib_path = p_path; }
String get_temp_library_path() const { return temp_lib_path; }
#endif

Expand Down

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