godot/platform/linuxbsd/godot_linuxbsd.cpp

/*************************************************************************/
/*  godot_linuxbsd.cpp                                                   */
/*************************************************************************/
/*                       This file is part of:                           */
/*                           GODOT ENGINE                                */
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/* Copyright (c) 2007-2022 Juan Linietsky, Ariel Manzur.                 */
/* Copyright (c) 2014-2022 Godot Engine contributors (cf. AUTHORS.md).   */
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#include <limits.h>
#include <locale.h>
#include <stdlib.h>
#include <unistd.h>

#if defined(SANITIZERS_ENABLED)
#include <sys/resource.h>
#endif

#include "main/main.h"
#include "os_linuxbsd.h"

int main(int argc, char *argv[]) {
#if defined(SANITIZERS_ENABLED)
	// Note: Set stack size to be at least 30 MB (vs 8 MB default) to avoid overflow, address sanitizer can increase stack usage up to 3 times.
	struct rlimit stack_lim = { 0x1E00000, 0x1E00000 };
	setrlimit(RLIMIT_STACK, &stack_lim);
#endif

	OS_LinuxBSD os;

	setlocale(LC_CTYPE, "");

	// We must override main when testing is enabled
	TEST_MAIN_OVERRIDE

	char *cwd = (char *)malloc(PATH_MAX);
	ERR_FAIL_COND_V(!cwd, ERR_OUT_OF_MEMORY);
	char *ret = getcwd(cwd, PATH_MAX);

	Error err = Main::setup(argv[0], argc - 1, &argv[1]);
	if (err != OK) {
		free(cwd);

		if (err == ERR_HELP) { // Returned by --help and --version, so success.
			return 0;
		}
		return 255;
	}

	if (Main::start()) {
		os.set_exit_code(EXIT_SUCCESS);
		os.run(); // it is actually the OS that decides how to run
	}
	Main::cleanup();

	if (ret) { // Previous getcwd was successful
		if (chdir(cwd) != 0) {
			ERR_PRINT("Couldn't return to previous working directory.");
		}
	}
	free(cwd);

	return os.get_exit_code();
}