diff options
Diffstat (limited to 'retro_emu_thread.c')
| -rw-r--r-- | retro_emu_thread.c | 175 |
1 files changed, 0 insertions, 175 deletions
diff --git a/retro_emu_thread.c b/retro_emu_thread.c deleted file mode 100644 index 2df7db7..0000000 --- a/retro_emu_thread.c +++ /dev/null @@ -1,175 +0,0 @@ -// This is copyrighted software. More information is at the end of this file. -#include "retro_emu_thread.h" - -#include <pthread.h> - -static pthread_t main_thread; -static pthread_t emu_thread; -static pthread_mutex_t emu_mutex; -static pthread_mutex_t main_mutex; -static pthread_cond_t emu_cv; -static pthread_cond_t main_cv; -static bool emu_keep_waiting = true; -static bool main_keep_waiting = true; -static bool emu_has_exited = false; -static bool emu_thread_canceled = false; -static bool emu_thread_initialized = false; - -static void* retro_run_emulator(void *args) -{ - char *args_str = (char *)args; - bool dynarec = (*args_str++ == 1) ? true : false; - u32 cycles = strtol(args_str, NULL, 10); - - emu_has_exited = false; - emu_thread_canceled = false; - -#if defined(HAVE_DYNAREC) - if (dynarec) - execute_arm_translate(cycles); -#endif - execute_arm(cycles); - - emu_has_exited = true; - return NULL; -} - -static void retro_switch_to_emu_thread() -{ - pthread_mutex_lock(&emu_mutex); - emu_keep_waiting = false; - pthread_mutex_unlock(&emu_mutex); - pthread_mutex_lock(&main_mutex); - pthread_cond_signal(&emu_cv); - - main_keep_waiting = true; - while (main_keep_waiting) - { - pthread_cond_wait(&main_cv, &main_mutex); - } - pthread_mutex_unlock(&main_mutex); -} - -static void retro_switch_to_main_thread() -{ - pthread_mutex_lock(&main_mutex); - main_keep_waiting = false; - pthread_mutex_unlock(&main_mutex); - pthread_mutex_lock(&emu_mutex); - pthread_cond_signal(&main_cv); - - emu_keep_waiting = true; - while (emu_keep_waiting) - { - pthread_cond_wait(&emu_cv, &emu_mutex); - } - pthread_mutex_unlock(&emu_mutex); -} - -void retro_switch_thread() -{ - if (pthread_self() == main_thread) - retro_switch_to_emu_thread(); - else - retro_switch_to_main_thread(); -} - -bool retro_init_emu_thread(bool dynarec, u32 cycles) -{ - char args[256]; - args[0] = '\0'; - - if (emu_thread_initialized) - return true; - - /* Keep this very simple: - * - First character: dynarec, 0/1 - * - Remaining characters: cycles */ - snprintf(args, sizeof(args), " %u", cycles); - args[0] = dynarec ? 1 : 0; - - main_thread = pthread_self(); - if (pthread_mutex_init(&main_mutex, NULL)) - goto main_mutex_error; - if (pthread_mutex_init(&emu_mutex, NULL)) - goto emu_mutex_error; - if (pthread_cond_init(&main_cv, NULL)) - goto main_cv_error; - if (pthread_cond_init(&emu_cv, NULL)) - goto emu_cv_error; - if (pthread_create(&emu_thread, NULL, retro_run_emulator, args)) - goto emu_thread_error; - - emu_thread_initialized = true; - return true; - -emu_thread_error: - pthread_cond_destroy(&emu_cv); -emu_cv_error: - pthread_cond_destroy(&main_cv); -main_cv_error: - pthread_mutex_destroy(&emu_mutex); -emu_mutex_error: - pthread_mutex_destroy(&main_mutex); -main_mutex_error: - return false; -} - -void retro_deinit_emu_thread() -{ - if (!emu_thread_initialized) - return; - - pthread_mutex_destroy(&main_mutex); - pthread_mutex_destroy(&emu_mutex); - pthread_cond_destroy(&main_cv); - pthread_cond_destroy(&emu_cv); - emu_thread_initialized = false; -} - -bool retro_is_emu_thread_initialized() -{ - return emu_thread_initialized; -} - -void retro_join_emu_thread() -{ - static bool is_joined = false; - if (is_joined) - return; - - pthread_join(emu_thread, NULL); - is_joined = true; -} - -void retro_cancel_emu_thread() -{ - if (emu_thread_canceled) - return; - - pthread_cancel(emu_thread); - emu_thread_canceled = true; -} - -bool retro_emu_thread_exited() -{ - return emu_has_exited; -} - -/* - -Copyright (C) 2020 Nikos Chantziaras <realnc@gmail.com> - -This program is free software: you can redistribute it and/or modify it under -the terms of the GNU General Public License as published by the Free Software -Foundation, either version 2 of the License, or (at your option) any later -version. - -This program is distributed in the hope that it will be useful, but WITHOUT -ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS -FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. - -You should have received a copy of the GNU General Public License along with -this program. If not, see <https://www.gnu.org/licenses/>. - -*/ |