/* * Mr. 4th Dimention - Allen Webster * * 14.11.2015 * * Linux layer for project codename "4ed" * */ // TOP #include "4ed_config.h" #include "4ed_meta.h" #define FCPP_FORBID_MALLOC #include "4cpp_types.h" #define FCPP_STRING_IMPLEMENTATION #include "4coder_string.h" #include "4ed_mem.cpp" #include "4ed_math.cpp" #include "4coder_custom.cpp" #undef exec_command #undef exec_command_keep_stack #undef clear_parameters #include "4ed_system.h" #include "4ed_rendering.h" #include "4ed.h" #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include //#include #include #include #include #include #include "4ed_internal.h" #include "4ed_linux_keyboard.cpp" #include "system_shared.h" #include #include #include #include #include #include #include #include #include #include #include //#define FRED_USE_FONTCONFIG 1 #if FRED_USE_FONTCONFIG #include #endif struct Linux_Coroutine { Coroutine coroutine; Linux_Coroutine *next; ucontext_t ctx, yield_ctx; stack_t stack; b32 done; }; struct Thread_Context{ u32 job_id; b32 running; Work_Queue *queue; u32 id; pthread_t handle; }; struct Thread_Group{ Thread_Context *threads; i32 count; }; struct Linux_Vars{ Display *XDisplay; Window XWindow; Render_Target target; XIM input_method; XIMStyle input_style; XIC input_context; Key_Input_Data key_data; Mouse_State mouse_data; String clipboard_contents; String clipboard_outgoing; Atom atom_CLIPBOARD; Atom atom_UTF8_STRING; Atom atom_NET_WM_STATE; Atom atom_NET_WM_STATE_MAXIMIZED_HORZ; Atom atom_NET_WM_STATE_MAXIMIZED_VERT; b32 has_xfixes; int xfixes_selection_event; Application_Mouse_Cursor cursor; #if FRED_USE_FONTCONFIG FcConfig *fontconfig; #endif void *app_code; void *custom; Thread_Memory *thread_memory; Thread_Group groups[THREAD_GROUP_COUNT]; sem_t thread_semaphores[THREAD_GROUP_COUNT]; pthread_mutex_t locks[LOCK_COUNT]; Plat_Settings settings; System_Functions *system; App_Functions app; Custom_API custom_api; b32 first; b32 redraw; b32 vsync; #if FRED_INTERNAL Sys_Bubble internal_bubble; #endif Font_Load_System fnt; Linux_Coroutine coroutine_data[2]; Linux_Coroutine *coroutine_free; }; #define LINUX_MAX_PASTE_CHARS 0x10000L #define FPS 60 #define frame_useconds (1000000 / FPS) #if 0 #define LINUX_FN_DEBUG(fmt, ...) do { \ fprintf(stderr, "%s: " fmt "\n", __func__, ##__VA_ARGS__); \ } while(0) #else #define LINUX_FN_DEBUG(fmt, ...) #endif globalvar Linux_Vars linuxvars; globalvar Application_Memory memory_vars; globalvar Exchange exchange_vars; #define LinuxGetMemory(size) LinuxGetMemory_(size, __LINE__, __FILE__) internal void* LinuxGetMemory_(i32 size, i32 line_number, char *file_name){ // TODO(allen): Implement without stdlib.h void *result = 0; Assert(size != 0); #if FRED_INTERNAL Sys_Bubble *bubble; result = malloc(size + sizeof(Sys_Bubble)); bubble = (Sys_Bubble*)result; bubble->flags = MEM_BUBBLE_SYS_DEBUG; bubble->line_number = line_number; bubble->file_name = file_name; bubble->size = size; // TODO(allen): make Sys_Bubble list thread safe insert_bubble(&linuxvars.internal_bubble, bubble); result = bubble + 1; #else result = malloc(size); #endif return(result); } internal void LinuxFreeMemory(void *block){ // TODO(allen): Implement without stdlib.h if (block){ #if FRED_INTERNAL Sys_Bubble *bubble; bubble = (Sys_Bubble*)block; --bubble; Assert((bubble->flags & MEM_BUBBLE_DEBUG_MASK) == MEM_BUBBLE_SYS_DEBUG); // TODO(allen): make Sys_Bubble list thread safe remove_bubble(bubble); free(bubble); #else free(block); #endif } } internal Partition LinuxScratchPartition(i32 size){ Partition part; void *data; data = LinuxGetMemory(size); part = partition_open(data, size); return(part); } internal void LinuxScratchPartitionGrow(Partition *part, i32 new_size){ void *data; if (new_size > part->max){ data = LinuxGetMemory(new_size); memcpy(data, part->base, part->pos); LinuxFreeMemory(part->base); part->base = (u8*)data; } } internal void LinuxScratchPartitionDouble(Partition *part){ LinuxScratchPartitionGrow(part, part->max*2); } internal Sys_Get_Memory_Sig(system_get_memory_){ return(LinuxGetMemory_(size, line_number, file_name)); } internal Sys_Free_Memory_Sig(system_free_memory){ LinuxFreeMemory(block); } internal void LinuxStringDup(String* str, void* data, size_t size){ if(str->memory_size < size){ if(str->str){ LinuxFreeMemory(str->str); } str->memory_size = size; str->str = (char*)LinuxGetMemory(size); //TODO(inso): handle alloc failure case } str->size = size; memcpy(str->str, data, size); } #if defined(_BSD_SOURCE) || defined(_SVID_SOURCE) || _POSIX_C_SOURCE >= 200809L || _XOPEN_SOURCE >= 700 #define OLD_STAT_NANO_TIME 0 #else #define OLD_STAT_NANO_TIME 1 #endif Sys_File_Time_Stamp_Sig(system_file_time_stamp){ struct stat info = {}; u64 microsecond_timestamp = 0; if(stat(filename, &info) == 0){ #if OLD_STAT_NANO_TIME microsecond_timestamp = (info.st_mtime * UINT64_C(1000000)) + (info.st_mtimensec / UINT64_C(1000)); #else microsecond_timestamp = (info.st_mtim.tv_sec * UINT64_C(1000000)) + (info.st_mtim.tv_nsec / UINT64_C(1000)); #endif } LINUX_FN_DEBUG("%s = %" PRIu64, filename, microsecond_timestamp); return(microsecond_timestamp); } // TODO(allen): DOES THIS AGREE WITH THE FILESTAMP TIMES? // NOTE(inso): I changed it to CLOCK_REALTIME, which should agree with file times Sys_Time_Sig(system_time){ struct timespec spec; u64 result; clock_gettime(CLOCK_REALTIME, &spec); result = (spec.tv_sec * UINT64_C(1000000)) + (spec.tv_nsec / UINT64_C(1000)); //LINUX_FN_DEBUG("ts: %" PRIu64, result); return(result); } Sys_Set_File_List_Sig(system_set_file_list){ DIR *d; struct dirent *entry; char *fname, *cursor, *cursor_start; File_Info *info_ptr; i32 count, file_count, size, required_size; if(directory.size <= 0){ if(!directory.str){ system_free_memory(file_list->block); file_list->block = 0; file_list->block_size = 0; } file_list->infos = 0; file_list->count = 0; return; } char* dir = (char*) alloca(directory.size + 1); memcpy(dir, directory.str, directory.size); dir[directory.size] = 0; LINUX_FN_DEBUG("%s", dir); d = opendir(dir); if (d){ count = 0; file_count = 0; for (entry = readdir(d); entry != 0; entry = readdir(d)){ fname = entry->d_name; if(fname[0] == '.' && (fname[1] == 0 || (fname[1] == '.' && fname[2] == 0))){ continue; } ++file_count; for (size = 0; fname[size]; ++size); count += size + 1; } required_size = count + file_count * sizeof(File_Info); if (file_list->block_size < required_size){ system_free_memory(file_list->block); file_list->block = system_get_memory(required_size); } file_list->infos = (File_Info*)file_list->block; cursor = (char*)(file_list->infos + file_count); rewinddir(d); info_ptr = file_list->infos; for (entry = readdir(d); entry != 0; entry = readdir(d)){ fname = entry->d_name; if(fname[0] == '.' && (fname[1] == 0 || (fname[1] == '.' && fname[2] == 0))){ continue; } cursor_start = cursor; for (; *fname; ) *cursor++ = *fname++; #ifdef _DIRENT_HAVE_D_TYPE if(entry->d_type != DT_UNKNOWN){ info_ptr->folder = entry->d_type == DT_DIR; } else #endif { struct stat st; if(lstat(entry->d_name, &st) != -1){ info_ptr->folder = S_ISDIR(st.st_mode); } else { info_ptr->folder = 0; } } info_ptr->filename.str = cursor_start; info_ptr->filename.size = (i32)(cursor - cursor_start); *cursor++ = 0; info_ptr->filename.memory_size = info_ptr->filename.size + 1; ++info_ptr; } file_list->count = file_count; closedir(d); } else { system_free_memory(file_list->block); file_list->block = 0; file_list->block_size = 0; file_list->infos = 0; file_list->count = 0; } } #if 0 Sys_File_Paths_Equal_Sig(system_file_paths_equal){ b32 result = 0; char* real_a = realpath(path_a, NULL); if(real_a){ char* real_b = realpath(path_b, NULL); if(real_b){ result = strcmp(real_a, real_b) == 0; free(real_b); } free(real_a); } return result; } #endif static_assert( (sizeof(((struct stat*)0)->st_dev) + sizeof(((struct stat*)0)->st_ino)) <= sizeof(Unique_Hash), "Unique_Hash too small" ); Sys_File_Unique_Hash_Sig(system_file_unique_hash){ Unique_Hash result = {}; struct stat st = {}; *success = 0; if(stat(filename.str, &st) == 0){ memcpy(&result, &st.st_dev, sizeof(st.st_dev)); memcpy((char*)&result + sizeof(st.st_dev), &st.st_ino, sizeof(st.st_ino)); *success = 1; } // LINUX_FN_DEBUG("%s = %ld:%ld", filename.str, (long)st.st_dev, (long)st.st_ino); return result; } Sys_Post_Clipboard_Sig(system_post_clipboard){ LinuxStringDup(&linuxvars.clipboard_outgoing, str.str, str.size); XSetSelectionOwner(linuxvars.XDisplay, linuxvars.atom_CLIPBOARD, linuxvars.XWindow, CurrentTime); } internal Linux_Coroutine* LinuxAllocCoroutine(){ Linux_Coroutine *result = linuxvars.coroutine_free; Assert(result != 0); if(getcontext(&result->ctx) == -1){ perror("getcontext"); } result->ctx.uc_stack = result->stack; linuxvars.coroutine_free = result->next; return(result); } internal void LinuxFreeCoroutine(Linux_Coroutine *data){ data->next = linuxvars.coroutine_free; linuxvars.coroutine_free = data; } internal void LinuxCoroutineMain(void *arg_){ Linux_Coroutine *c = (Linux_Coroutine*)arg_; c->coroutine.func(&c->coroutine); c->done = 1; LinuxFreeCoroutine(c); setcontext((ucontext_t*)c->coroutine.yield_handle); } static_assert(sizeof(Plat_Handle) >= sizeof(ucontext_t*), "Plat handle not big enough"); internal Sys_Create_Coroutine_Sig(system_create_coroutine){ Linux_Coroutine *c = LinuxAllocCoroutine(); c->done = 0; makecontext(&c->ctx, (void (*)())LinuxCoroutineMain, 1, &c->coroutine); *(ucontext_t**)&c->coroutine.plat_handle = &c->ctx; c->coroutine.func = func; return(&c->coroutine); } internal Sys_Launch_Coroutine_Sig(system_launch_coroutine){ Linux_Coroutine *c = (Linux_Coroutine*)coroutine; ucontext_t* ctx = *(ucontext**)&coroutine->plat_handle; coroutine->yield_handle = &c->yield_ctx; coroutine->in = in; coroutine->out = out; swapcontext(&c->yield_ctx, ctx); if (c->done){ LinuxFreeCoroutine(c); coroutine = 0; } return(coroutine); } Sys_Resume_Coroutine_Sig(system_resume_coroutine){ Linux_Coroutine *c = (Linux_Coroutine*)coroutine; void *fiber; Assert(!c->done); coroutine->yield_handle = &c->yield_ctx; coroutine->in = in; coroutine->out = out; ucontext *ctx = *(ucontext**)&coroutine->plat_handle; swapcontext(&c->yield_ctx, ctx); if (c->done){ LinuxFreeCoroutine(c); coroutine = 0; } return(coroutine); } Sys_Yield_Coroutine_Sig(system_yield_coroutine){ swapcontext(*(ucontext_t**)&coroutine->plat_handle, (ucontext*)coroutine->yield_handle); } Sys_CLI_Call_Sig(system_cli_call){ LINUX_FN_DEBUG("%s %s", path, script_name); int pipe_fds[2]; if(pipe(pipe_fds) == -1){ perror("system_cli_call: pipe"); return 0; } pid_t child_pid = fork(); if(child_pid == -1){ perror("system_cli_call: fork"); return 0; } enum { PIPE_FD_READ, PIPE_FD_WRITE }; // child if(child_pid == 0){ close(pipe_fds[PIPE_FD_READ]); dup2(pipe_fds[PIPE_FD_WRITE], STDOUT_FILENO); dup2(pipe_fds[PIPE_FD_WRITE], STDERR_FILENO); if(chdir(path) == -1){ perror("system_cli_call: chdir"); exit(1); }; char* argv[] = { "sh", "-c", script_name, NULL }; if(execv("/bin/sh", argv) == -1){ perror("system_cli_call: execv"); } exit(1); } else { close(pipe_fds[PIPE_FD_WRITE]); *(pid_t*)&cli_out->proc = child_pid; *(int*)&cli_out->out_read = pipe_fds[PIPE_FD_READ]; *(int*)&cli_out->out_write = pipe_fds[PIPE_FD_WRITE]; } return 1; } Sys_CLI_Begin_Update_Sig(system_cli_begin_update){ AllowLocal(cli); } Sys_CLI_Update_Step_Sig(system_cli_update_step){ int pipe_read_fd = *(int*)&cli->out_read; fd_set fds; FD_ZERO(&fds); FD_SET(pipe_read_fd, &fds); struct timeval tv = {}; size_t space_left = max; char* ptr = dest; while(space_left > 0 && select(pipe_read_fd + 1, &fds, NULL, NULL, &tv) == 1){ ssize_t num = read(pipe_read_fd, ptr, space_left); if(num == -1){ perror("system_cli_update_step: read"); } else if(num == 0){ // NOTE(inso): EOF break; } else { ptr += num; space_left -= num; } } *amount = (ptr - dest); return (ptr - dest) > 0; } Sys_CLI_End_Update_Sig(system_cli_end_update){ pid_t pid = *(pid_t*)&cli->proc; b32 close_me = 0; int status; if(pid && waitpid(pid, &status, WNOHANG) > 0){ close_me = 1; cli->exit = WEXITSTATUS(status); close(*(int*)&cli->out_read); close(*(int*)&cli->out_write); } return close_me; } static_assert(sizeof(Plat_Handle) >= sizeof(sem_t*), "Plat_Handle not big enough"); internal Plat_Handle LinuxSemToHandle(sem_t* sem){ return *(Plat_Handle*)&sem; } internal sem_t* LinuxHandleToSem(Plat_Handle h){ return *(sem_t**)&h; } internal void* ThreadProc(void* arg){ Thread_Context *thread = (Thread_Context*)arg; Work_Queue *queue = thread->queue; for (;;){ u32 read_index = queue->read_position; u32 write_index = queue->write_position; if (read_index != write_index){ u32 next_read_index = (read_index + 1) % JOB_ID_WRAP; u32 safe_read_index = __sync_val_compare_and_swap(&queue->read_position, read_index, next_read_index); if (safe_read_index == read_index){ Full_Job_Data *full_job = queue->jobs + (safe_read_index % QUEUE_WRAP); // NOTE(allen): This is interlocked so that it plays nice // with the cancel job routine, which may try to cancel this job // at the same time that we try to run it i32 safe_running_thread = __sync_val_compare_and_swap(&full_job->running_thread, THREAD_NOT_ASSIGNED, thread->id); if (safe_running_thread == THREAD_NOT_ASSIGNED){ thread->job_id = full_job->id; thread->running = 1; Thread_Memory *thread_memory = 0; // TODO(allen): remove memory_request if (full_job->job.memory_request != 0){ thread_memory = linuxvars.thread_memory + thread->id - 1; if (thread_memory->size < full_job->job.memory_request){ if (thread_memory->data){ LinuxFreeMemory(thread_memory->data); } i32 new_size = LargeRoundUp(full_job->job.memory_request, Kbytes(4)); thread_memory->data = LinuxGetMemory(new_size); thread_memory->size = new_size; } } full_job->job.callback(linuxvars.system, thread, thread_memory, &exchange_vars.thread, full_job->job.data); full_job->running_thread = 0; thread->running = 0; } } } else{ sem_wait(LinuxHandleToSem(queue->semaphore)); } } } Sys_Post_Job_Sig(system_post_job){ Work_Queue *queue = exchange_vars.thread.queues + group_id; Assert((queue->write_position + 1) % QUEUE_WRAP != queue->read_position % QUEUE_WRAP); b32 success = 0; u32 result = 0; while (!success){ u32 write_index = queue->write_position; u32 next_write_index = (write_index + 1) % JOB_ID_WRAP; u32 safe_write_index = __sync_val_compare_and_swap(&queue->write_position, write_index, next_write_index); if (safe_write_index == write_index){ result = write_index; write_index = write_index % QUEUE_WRAP; queue->jobs[write_index].job = job; queue->jobs[write_index].running_thread = THREAD_NOT_ASSIGNED; queue->jobs[write_index].id = result; success = 1; } } sem_post(LinuxHandleToSem(queue->semaphore)); return result; } Sys_Acquire_Lock_Sig(system_acquire_lock){ pthread_mutex_lock(linuxvars.locks + id); } Sys_Release_Lock_Sig(system_release_lock){ pthread_mutex_unlock(linuxvars.locks + id); } Sys_Cancel_Job_Sig(system_cancel_job){ AllowLocal(group_id); AllowLocal(job_id); Work_Queue *queue = exchange_vars.thread.queues + group_id; Thread_Group *group = linuxvars.groups + group_id; u32 job_index; u32 thread_id; Full_Job_Data *full_job; Thread_Context *thread; job_index = job_id % QUEUE_WRAP; full_job = queue->jobs + job_index; Assert(full_job->id == job_id); thread_id = __sync_val_compare_and_swap(&full_job->running_thread, THREAD_NOT_ASSIGNED, 0); if (thread_id != THREAD_NOT_ASSIGNED){ system_acquire_lock(CANCEL_LOCK0 + thread_id - 1); thread = group->threads + thread_id - 1; pthread_kill(thread->handle, SIGINT); //NOTE(inso) SIGKILL if you really want it to die. pthread_create(&thread->handle, NULL, &ThreadProc, thread); system_release_lock(CANCEL_LOCK0 + thread_id - 1); thread->running = 0; } } Sys_Grow_Thread_Memory_Sig(system_grow_thread_memory){ void *old_data; i32 old_size, new_size; system_acquire_lock(CANCEL_LOCK0 + memory->id - 1); old_data = memory->data; old_size = memory->size; new_size = LargeRoundUp(memory->size*2, Kbytes(4)); memory->data = system_get_memory(new_size); memory->size = new_size; if (old_data){ memcpy(memory->data, old_data, old_size); system_free_memory(old_data); } system_release_lock(CANCEL_LOCK0 + memory->id - 1); } INTERNAL_Sys_Sentinel_Sig(internal_sentinel){ Bubble *result; #if FRED_INTERNAL result = &linuxvars.internal_bubble; #else result = 0; #endif return(result); } INTERNAL_Sys_Get_Thread_States_Sig(internal_get_thread_states){ Work_Queue *queue = exchange_vars.thread.queues + id; u32 write = queue->write_position; u32 read = queue->read_position; if (write < read) write += JOB_ID_WRAP; *pending = (i32)(write - read); Thread_Group *group = linuxvars.groups + id; for (i32 i = 0; i < group->count; ++i){ running[i] = (group->threads[i].running != 0); } } INTERNAL_Sys_Debug_Message_Sig(internal_debug_message){ fprintf(stderr, "%s", message); } internal FILE_EXISTS_SIG(system_file_exists){ int result = 0; char buff[PATH_MAX] = {}; if(len + 1 > PATH_MAX){ fputs("system_directory_has_file: path too long\n", stderr); } else { memcpy(buff, filename, len); buff[len] = 0; struct stat st; result = stat(buff, &st) == 0 && S_ISREG(st.st_mode); } LINUX_FN_DEBUG("%s: %d", buff, result); return(result); } DIRECTORY_CD_SIG(system_directory_cd){ String directory = make_string(dir, *len, capacity); b32 result = 0; i32 old_size; if (rel_path[0] != 0){ if (rel_path[0] == '.' && rel_path[1] == 0){ result = 1; } else if (rel_path[0] == '.' && rel_path[1] == '.' && rel_path[2] == 0){ result = remove_last_folder(&directory); terminate_with_null(&directory); } else{ if (directory.size + rel_len + 1 > directory.memory_size){ old_size = directory.size; append_partial(&directory, rel_path); append_partial(&directory, "/"); terminate_with_null(&directory); struct stat st; if (stat(directory.str, &st) == 0 && S_ISDIR(st.st_mode)){ result = 1; } else{ directory.size = old_size; } } } } *len = directory.size; LINUX_FN_DEBUG("%.*s: %d", directory.size, directory.str, result); return(result); } internal Sys_File_Can_Be_Made(system_file_can_be_made){ b32 result = access(filename, W_OK) == 0; LINUX_FN_DEBUG("%s = %d", filename, result); return(result); } internal Sys_Load_File_Sig(system_load_file){ Data result = {}; struct stat info = {}; int fd; u8 *ptr, *read_ptr; size_t bytes_to_read; ssize_t num; LINUX_FN_DEBUG("%s", filename); fd = open(filename, O_RDONLY); if(fd < 0){ fprintf(stderr, "sys_open_file: open '%s': %s\n", filename, strerror(errno)); goto out; } if(fstat(fd, &info) < 0){ fprintf(stderr, "sys_open_file: stat '%s': %s\n", filename, strerror(errno)); goto out; } if(info.st_size < 0){ fprintf(stderr, "sys_open_file: st_size < 0: %ld\n", info.st_size); goto out; } // NOTE(inso): add 1 extra byte since malloc(0) can return NULL ptr = (u8*)LinuxGetMemory(info.st_size + 1); if(!ptr){ fputs("sys_open_file: null pointer from LGM", stderr); goto out; } // NOTE(inso): might as well null terminate with the extra byte ptr[info.st_size] = 0; read_ptr = ptr; bytes_to_read = info.st_size; do { num = read(fd, read_ptr, bytes_to_read); if(num < 0){ if(errno == EINTR){ continue; } else { //TODO(inso): error handling perror("sys_load_file: read"); LinuxFreeMemory(ptr); goto out; } } else { bytes_to_read -= num; read_ptr += num; } } while(bytes_to_read); result.size = info.st_size; result.data = ptr; out: if(fd >= 0) close(fd); return(result); } internal Sys_Save_File_Sig(system_save_file){ b32 result = 0; int fd = open(filename, O_WRONLY | O_TRUNC); LINUX_FN_DEBUG("%s %d", filename, size); if(fd < 0){ fprintf(stderr, "system_save_file: open '%s': %s\n", filename, strerror(errno)); } else { do { ssize_t written = write(fd, data, size); if(written == -1){ if(errno != EINTR){ perror("system_save_file: write"); close(fd); return result; } } else { size -= written; data += written; } } while(size); close(fd); result = 1; } return result; } //NOTE(inso): this is a version that writes to a temp file & renames, but might be causing save issues? #if 0 internal Sys_Save_File_Sig(system_save_file){ b32 result = 0; const size_t save_fsz = strlen(filename); const char tmp_end[] = ".4ed.XXXXXX"; char* tmp_fname = (char*) alloca(save_fsz + sizeof(tmp_end)); memcpy(tmp_fname, filename, save_fsz); memcpy(tmp_fname + save_fsz, tmp_end, sizeof(tmp_end)); int tmp_fd = mkstemp(tmp_fname); if(tmp_fd == -1){ perror("system_save_file: mkstemp"); return result; } do { ssize_t written = write(tmp_fd, data, size); if(written == -1){ if(errno == EINTR){ continue; } else { perror("system_save_file: write"); unlink(tmp_fname); return result; } } else { size -= written; data += written; } } while(size); if(rename(tmp_fname, filename) == -1){ perror("system_save_file: rename"); unlink(tmp_fname); return result; } result = 1; return(result); } #endif #if FRED_USE_FONTCONFIG internal char* LinuxFontConfigGetName(char* approx_name, double pts){ char* result = 0; FcPattern* pat = FcPatternBuild( NULL, FC_POSTSCRIPT_NAME, FcTypeString, approx_name, FC_SIZE, FcTypeDouble, pts, FC_FONTFORMAT, FcTypeString, "TrueType", NULL ); FcConfigSubstitute(linuxvars.fontconfig, pat, FcMatchPattern); FcDefaultSubstitute(pat); FcResult res; FcPattern* font = FcFontMatch(linuxvars.fontconfig, pat, &res); FcChar8* fname = 0; if(font){ FcPatternGetString(font, FC_FILE, 0, &fname); if(fname){ result = strdup((char*)fname); fprintf(stderr, "Got system font from FontConfig: %s\n", result); } FcPatternDestroy(font); } FcPatternDestroy(pat); if(!result){ result = strdup(approx_name); } return result; } #endif #include "system_shared.cpp" #include "4ed_rendering.cpp" internal Font_Load_Sig(system_draw_font_load){ Font_Load_Parameters *params; b32 free_name = 0; char* chosen_name = filename; #if FRED_USE_FONTCONFIG if(access(filename, F_OK) != 0){ chosen_name = LinuxFontConfigGetName(basename(filename), pt_size); free_name = 1; } #endif system_acquire_lock(FONT_LOCK); params = linuxvars.fnt.free_param.next; fnt__remove(params); fnt__insert(&linuxvars.fnt.used_param, params); system_release_lock(FONT_LOCK); if (linuxvars.fnt.part.base == 0){ linuxvars.fnt.part = LinuxScratchPartition(Mbytes(8)); } b32 success = 0; i32 attempts = 0; i32 oversample = (i32)(2.0f * (linuxvars.target.dpi / 96.0f) + 0.5f); for(; attempts < 3; ++attempts){ success = draw_font_load( linuxvars.fnt.part.base, linuxvars.fnt.part.max, font_out, chosen_name, pt_size, tab_width, oversample ); if(success){ break; } else { fprintf(stderr, "draw_font_load failed, %d\n", linuxvars.fnt.part.max); LinuxScratchPartitionDouble(&linuxvars.fnt.part); } } if(success){ system_acquire_lock(FONT_LOCK); fnt__remove(params); fnt__insert(&linuxvars.fnt.free_param, params); system_release_lock(FONT_LOCK); } if(free_name){ free(chosen_name); } return success; } internal Sys_To_Binary_Path(system_to_binary_path){ b32 translate_success = 0; i32 max = out_filename->memory_size; i32 size = readlink("/proc/self/exe", out_filename->str, max); LINUX_FN_DEBUG("%d, %d", max, size); if (size > 0 && size < max-1){ out_filename->size = size; remove_last_folder(out_filename); if (append(out_filename, filename) && terminate_with_null(out_filename)){ LINUX_FN_DEBUG("%.*s", out_filename->size, out_filename->str); translate_success = 1; } } return (translate_success); } internal b32 LinuxLoadAppCode(){ b32 result = 0; App_Get_Functions *get_funcs = 0; linuxvars.app_code = dlopen("./4ed_app.so", RTLD_LAZY); if (linuxvars.app_code){ get_funcs = (App_Get_Functions*) dlsym(linuxvars.app_code, "app_get_functions"); } else { fprintf(stderr, "dlopen failed: %s\n", dlerror()); } if (get_funcs){ result = 1; linuxvars.app = get_funcs(); } return(result); } internal void LinuxLoadSystemCode(){ linuxvars.system->file_time_stamp = system_file_time_stamp; linuxvars.system->set_file_list = system_set_file_list; linuxvars.system->file_exists = system_file_exists; linuxvars.system->directory_cd = system_directory_cd; linuxvars.system->file_unique_hash = system_file_unique_hash; linuxvars.system->post_clipboard = system_post_clipboard; linuxvars.system->time = system_time; linuxvars.system->create_coroutine = system_create_coroutine; linuxvars.system->launch_coroutine = system_launch_coroutine; linuxvars.system->resume_coroutine = system_resume_coroutine; linuxvars.system->yield_coroutine = system_yield_coroutine; linuxvars.system->cli_call = system_cli_call; linuxvars.system->cli_begin_update = system_cli_begin_update; linuxvars.system->cli_update_step = system_cli_update_step; linuxvars.system->cli_end_update = system_cli_end_update; linuxvars.system->post_job = system_post_job; linuxvars.system->cancel_job = system_cancel_job; linuxvars.system->grow_thread_memory = system_grow_thread_memory; linuxvars.system->acquire_lock = system_acquire_lock; linuxvars.system->release_lock = system_release_lock; linuxvars.system->internal_sentinel = internal_sentinel; linuxvars.system->internal_get_thread_states = internal_get_thread_states; linuxvars.system->internal_debug_message = internal_debug_message; linuxvars.system->slash = '/'; } internal void LinuxLoadRenderCode(){ linuxvars.target.push_clip = draw_push_clip; linuxvars.target.pop_clip = draw_pop_clip; linuxvars.target.push_piece = draw_push_piece; linuxvars.target.font_set.font_info_load = draw_font_info_load; linuxvars.target.font_set.font_load = system_draw_font_load; linuxvars.target.font_set.release_font = draw_release_font; } internal void LinuxRedrawTarget(){ system_acquire_lock(RENDER_LOCK); launch_rendering(&linuxvars.target); system_release_lock(RENDER_LOCK); glFlush(); glXSwapBuffers(linuxvars.XDisplay, linuxvars.XWindow); } internal void LinuxResizeTarget(i32 width, i32 height){ if (width > 0 && height > 0){ glViewport(0, 0, width, height); glMatrixMode(GL_PROJECTION); glLoadIdentity(); glOrtho(0, width, height, 0, -1, 1); glScissor(0, 0, width, height); linuxvars.target.width = width; linuxvars.target.height = height; linuxvars.redraw = 1; } } // NOTE(allen): Thanks to Casey for providing the linux OpenGL launcher. static bool ctxErrorOccurred = false; static int XInput2OpCode = 0; internal int ctxErrorHandler( Display *dpy, XErrorEvent *ev ) { ctxErrorOccurred = true; return 0; } #if FRED_INTERNAL static void gl_log( GLenum source, GLenum type, GLuint id, GLenum severity, GLsizei length, const GLchar* message, const void* userParam ){ fprintf(stderr, "GL DEBUG: %s\n", message); } #endif internal GLXContext InitializeOpenGLContext(Display *XDisplay, Window XWindow, GLXFBConfig &bestFbc, b32 &IsLegacy) { IsLegacy = false; typedef GLXContext (*glXCreateContextAttribsARBProc)(Display*, GLXFBConfig, GLXContext, Bool, const int*); const char *glxExts = glXQueryExtensionsString(XDisplay, DefaultScreen(XDisplay)); glXCreateContextAttribsARBProc glXCreateContextAttribsARB = 0; glXCreateContextAttribsARB = (glXCreateContextAttribsARBProc) glXGetProcAddressARB( (const GLubyte *) "glXCreateContextAttribsARB" ); GLXContext ctx = 0; ctxErrorOccurred = false; int (*oldHandler)(Display*, XErrorEvent*) = XSetErrorHandler(&ctxErrorHandler); if (!glXCreateContextAttribsARB) { fprintf(stderr, "glXCreateContextAttribsARB() not found" " ... using old-style GLX context\n" ); ctx = glXCreateNewContext( XDisplay, bestFbc, GLX_RGBA_TYPE, 0, True ); } else { int context_attribs[] = { GLX_CONTEXT_MAJOR_VERSION_ARB, 4, GLX_CONTEXT_MINOR_VERSION_ARB, 3, GLX_CONTEXT_PROFILE_MASK_ARB , GLX_CONTEXT_COMPATIBILITY_PROFILE_BIT_ARB, #if FRED_INTERNAL GLX_CONTEXT_FLAGS_ARB , GLX_CONTEXT_DEBUG_BIT_ARB, #endif None }; fprintf(stderr, "Attribs: %d %d %d %d %d\n", context_attribs[0], context_attribs[1], context_attribs[2], context_attribs[3], context_attribs[4]); fprintf(stderr, "Creating context\n" ); ctx = glXCreateContextAttribsARB( XDisplay, bestFbc, 0, True, context_attribs ); XSync( XDisplay, False ); if ( !ctxErrorOccurred && ctx ) { fprintf(stderr, "Created GL 4.3 context\n" ); } else { ctxErrorOccurred = false; context_attribs[1] = 3; context_attribs[3] = 2; fprintf(stderr, "Creating context\n" ); ctx = glXCreateContextAttribsARB( XDisplay, bestFbc, 0, True, context_attribs ); XSync( XDisplay, False ); if ( !ctxErrorOccurred && ctx ) { fprintf(stderr, "Created GL 3.2 context\n" ); } else { context_attribs[1] = 1; context_attribs[3] = 2; ctxErrorOccurred = false; fprintf(stderr, "Failed to create GL 3.2 context" " ... using old-style GLX context\n" ); ctx = glXCreateContextAttribsARB( XDisplay, bestFbc, 0, True, context_attribs ); IsLegacy = true; } } } XSync( XDisplay, False ); XSetErrorHandler( oldHandler ); if ( ctxErrorOccurred || !ctx ) { fprintf(stderr, "Failed to create an OpenGL context\n" ); exit(1); } if ( ! glXIsDirect ( XDisplay, ctx ) ) { fprintf(stderr, "Indirect GLX rendering context obtained\n" ); } else { fprintf(stderr, "Direct GLX rendering context obtained\n" ); } fprintf(stderr, "Making context current\n" ); glXMakeCurrent( XDisplay, XWindow, ctx ); GLint n; char *Vendor = (char *)glGetString(GL_VENDOR); char *Renderer = (char *)glGetString(GL_RENDERER); char *Version = (char *)glGetString(GL_VERSION); //TODO(inso): glGetStringi is required in core profile if the GL version is >= 3.0 char *Extensions = (char *)glGetString(GL_EXTENSIONS); fprintf(stderr, "GL_VENDOR: %s\n", Vendor); fprintf(stderr, "GL_RENDERER: %s\n", Renderer); fprintf(stderr, "GL_VERSION: %s\n", Version); // fprintf(stderr, "GL_EXTENSIONS: %s\n", Extensions); //NOTE(inso): enable vsync if available. this should probably be optional if(strstr(glxExts, "GLX_EXT_swap_control ")){ PFNGLXSWAPINTERVALEXTPROC glx_swap_interval_ext = (PFNGLXSWAPINTERVALEXTPROC) glXGetProcAddressARB((const GLubyte*)"glXSwapIntervalEXT"); if(glx_swap_interval_ext){ glx_swap_interval_ext(XDisplay, XWindow, 1); unsigned int swap_val = 0; glXQueryDrawable(XDisplay, XWindow, GLX_SWAP_INTERVAL_EXT, &swap_val); linuxvars.vsync = swap_val == 1; fprintf(stderr, "VSync enabled? %s.\n", linuxvars.vsync ? "Yes" : "No"); } } else if(strstr(glxExts, "GLX_MESA_swap_control ")){ PFNGLXSWAPINTERVALMESAPROC glx_swap_interval_mesa = (PFNGLXSWAPINTERVALMESAPROC) glXGetProcAddressARB((const GLubyte*)"glXSwapIntervalMESA"); PFNGLXGETSWAPINTERVALMESAPROC glx_get_swap_interval_mesa = (PFNGLXGETSWAPINTERVALMESAPROC) glXGetProcAddressARB((const GLubyte*)"glXGetSwapIntervalMESA"); if(glx_swap_interval_mesa){ glx_swap_interval_mesa(1); if(glx_get_swap_interval_mesa){ linuxvars.vsync = glx_get_swap_interval_mesa(); fprintf(stderr, "VSync enabled? %s (MESA)\n", linuxvars.vsync ? "Yes" : "No"); } else { // NOTE(inso): assume it worked? linuxvars.vsync = 1; fputs("VSync enabled? possibly (MESA)", stderr); } } } else if(strstr(glxExts, "GLX_SGI_swap_control ")){ PFNGLXSWAPINTERVALSGIPROC glx_swap_interval_sgi = (PFNGLXSWAPINTERVALSGIPROC) glXGetProcAddressARB((const GLubyte*)"glXSwapIntervalSGI"); if(glx_swap_interval_sgi){ glx_swap_interval_sgi(1); //NOTE(inso): The SGI one doesn't seem to have a way to confirm we got it... linuxvars.vsync = 1; fputs("VSync enabled? hopefully (SGI)", stderr); } } else { fputs("VSync enabled? nope, no suitable extension", stderr); } #if FRED_INTERNAL PFNGLDEBUGMESSAGECALLBACKARBPROC gl_dbg_callback = (PFNGLDEBUGMESSAGECALLBACKARBPROC)glXGetProcAddress((const GLubyte*)"glDebugMessageCallback"); if(gl_dbg_callback){ fputs("enabling gl debug", stderr); gl_dbg_callback(&gl_log, 0); glEnable(GL_DEBUG_OUTPUT); } #endif glEnable(GL_TEXTURE_2D); glEnable(GL_SCISSOR_TEST); glEnable(GL_BLEND); glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA); return(ctx); } internal b32 GLXCanUseFBConfig(Display *XDisplay) { b32 Result = false; int GLXMajor, GLXMinor; char *XVendor = ServerVendor(XDisplay); fprintf(stderr, "XWindows vendor: %s\n", XVendor); if(glXQueryVersion(XDisplay, &GLXMajor, &GLXMinor)) { fprintf(stderr, "GLX version %d.%d\n", GLXMajor, GLXMinor); if(((GLXMajor == 1 ) && (GLXMinor >= 3)) || (GLXMajor > 1)) { Result = true; } } return(Result); } typedef struct glx_config_result{ b32 Found; GLXFBConfig BestConfig; XVisualInfo BestInfo; } glx_config_result; internal glx_config_result ChooseGLXConfig(Display *XDisplay, int XScreenIndex) { glx_config_result Result = {0}; int DesiredAttributes[] = { GLX_X_RENDERABLE , True, GLX_DRAWABLE_TYPE , GLX_WINDOW_BIT, GLX_RENDER_TYPE , GLX_RGBA_BIT, GLX_X_VISUAL_TYPE , GLX_TRUE_COLOR, GLX_RED_SIZE , 8, GLX_GREEN_SIZE , 8, GLX_BLUE_SIZE , 8, GLX_ALPHA_SIZE , 8, GLX_DEPTH_SIZE , 24, GLX_STENCIL_SIZE , 8, GLX_DOUBLEBUFFER , True, //GLX_SAMPLE_BUFFERS , 1, //GLX_SAMPLES , 4, None }; { int ConfigCount; GLXFBConfig *Configs = glXChooseFBConfig(XDisplay, XScreenIndex, DesiredAttributes, &ConfigCount); #if 0 int DiffValues[GLXValueCount]; #endif {for(int ConfigIndex = 0; ConfigIndex < ConfigCount; ++ConfigIndex) { GLXFBConfig &Config = Configs[ConfigIndex]; XVisualInfo *VisualInfo = glXGetVisualFromFBConfig(XDisplay, Config); #if 0 fprintf(stderr, " Option %d:\n", ConfigIndex); fprintf(stderr, " Depth: %d\n", VisualInfo->depth); fprintf(stderr, " Bits per channel: %d\n", VisualInfo->bits_per_rgb); fprintf(stderr, " Mask: R%06x G%06x B%06x\n", (uint32)VisualInfo->red_mask, (uint32)VisualInfo->green_mask, (uint32)VisualInfo->blue_mask); fprintf(stderr, " Class: %d\n", VisualInfo->c_class); #endif #if 0 {for(int ValueIndex = 0; ValueIndex < GLXValueCount; ++ValueIndex) { glx_value_info &ValueInfo = GLXValues[ValueIndex]; int Value; glXGetFBConfigAttrib(XDisplay, Config, ValueInfo.ID, &Value); if(DiffValues[ValueIndex] != Value) { fprintf(stderr, " %s: %d\n", ValueInfo.Name, Value); DiffValues[ValueIndex] = Value; } }} #endif // TODO(casey): How the hell are you supposed to pick a config here?? if(ConfigIndex == 0) { Result.Found = true; Result.BestConfig = Config; Result.BestInfo = *VisualInfo; } XFree(VisualInfo); }} XFree(Configs); } return(Result); } struct Init_Input_Result{ XIM input_method; XIMStyle best_style; XIC xic; }; internal Init_Input_Result InitializeXInput(Display *dpy, Window XWindow) { #if 0 int event, error; if(XQueryExtension(dpy, "XInputExtension", &XInput2OpCode, &event, &error)) { int major = 2, minor = 0; if(XIQueryVersion(dpy, &major, &minor) != BadRequest) { fprintf(stderr, "XInput initialized version %d.%d\n", major, minor); } else { fprintf(stderr, "XI2 not available. Server supports %d.%d\n", major, minor); } } else { fprintf(stderr, "X Input extension not available.\n"); } /* TODO(casey): So, this is all one big clusterfuck I guess. The problem here is that you want to be able to get input from all possible devices that could be a mouse or keyboard (or gamepad, or whatever). So you'd like to be able to register events for XIAllDevices, so that when a new input device is connected, you will start receiving input from it automatically, without having to periodically poll XIQueryDevice to see if a new device has appeared. UNFORTUNATELY, this is not actually possible in Linux because there was a bug in Xorg (as of early 2013, it is still not fixed in most distributions people are using, AFAICT) which makes the XServer return an error if you actually try to do this :( But EVENTUALLY, if that shit gets fixed, then that is the way this should work. */ #if 0 int DeviceCount; XIDeviceInfo *DeviceInfo = XIQueryDevice(dpy, XIAllDevices, &DeviceCount); {for(int32x DeviceIndex = 0; DeviceIndex < DeviceCount; ++DeviceIndex) { XIDeviceInfo *Device = DeviceInfo + DeviceIndex; fprintf(stderr, "Device %d: %s\n", Device->deviceid, Device->name); }} XIFreeDeviceInfo(DeviceInfo); #endif XIEventMask Mask = {0}; Mask.deviceid = XIAllDevices; Mask.mask_len = XIMaskLen(XI_RawMotion); size_t MaskSize = Mask.mask_len * sizeof(char unsigned); Mask.mask = (char unsigned *)alloca(MaskSize); memset(Mask.mask, 0, MaskSize); if(Mask.mask) { XISetMask(Mask.mask, XI_ButtonPress); XISetMask(Mask.mask, XI_ButtonRelease); XISetMask(Mask.mask, XI_KeyPress); XISetMask(Mask.mask, XI_KeyRelease); XISetMask(Mask.mask, XI_Motion); XISetMask(Mask.mask, XI_DeviceChanged); XISetMask(Mask.mask, XI_Enter); XISetMask(Mask.mask, XI_Leave); XISetMask(Mask.mask, XI_FocusIn); XISetMask(Mask.mask, XI_FocusOut); XISetMask(Mask.mask, XI_HierarchyChanged); XISetMask(Mask.mask, XI_PropertyEvent); XISelectEvents(dpy, XWindow, &Mask, 1); XSync(dpy, False); Mask.deviceid = XIAllMasterDevices; memset(Mask.mask, 0, MaskSize); XISetMask(Mask.mask, XI_RawKeyPress); XISetMask(Mask.mask, XI_RawKeyRelease); XISetMask(Mask.mask, XI_RawButtonPress); XISetMask(Mask.mask, XI_RawButtonRelease); XISetMask(Mask.mask, XI_RawMotion); XISelectEvents(dpy, DefaultRootWindow(dpy), &Mask, 1); } #endif // NOTE(allen): Annnndddd... here goes some guess work of my own. Init_Input_Result result = {}; XIMStyle style; XIMStyles *styles = 0; i32 i, count; setlocale(LC_ALL, ""); XSetLocaleModifiers(""); fprintf(stderr, "Supported locale?: %s.\n", XSupportsLocale() ? "Yes" : "No"); // TODO(inso): handle the case where it isn't supported somehow? XSelectInput( linuxvars.XDisplay, linuxvars.XWindow, ExposureMask | KeyPressMask | KeyReleaseMask | ButtonPressMask | ButtonReleaseMask | EnterWindowMask | LeaveWindowMask | PointerMotionMask | FocusChangeMask | StructureNotifyMask | MappingNotify | ExposureMask | VisibilityChangeMask ); result.input_method = XOpenIM(dpy, 0, 0, 0); if (!result.input_method){ // NOTE(inso): Try falling back to the internal XIM implementation that // should in theory always exist. XSetLocaleModifiers("@im=none"); result.input_method = XOpenIM(dpy, 0, 0, 0); } if (result.input_method){ if (!XGetIMValues(result.input_method, XNQueryInputStyle, &styles, NULL) && styles){ result.best_style = 0; count = styles->count_styles; for (i = 0; i < count; ++i){ style = styles->supported_styles[i]; if (style == (XIMPreeditNothing | XIMStatusNothing)){ result.best_style = style; break; } } if (result.best_style){ XFree(styles); result.xic = XCreateIC(result.input_method, XNInputStyle, result.best_style, XNClientWindow, XWindow, XNFocusWindow, XWindow, 0, 0, NULL); } else{ result = {}; fputs("Could not get minimum required input style", stderr); } } } else{ result = {}; fputs("Could not open X Input Method", stderr); } return(result); } static void push_key(u8 code, u8 chr, u8 chr_nocaps, b8 (*mods)[MDFR_INDEX_COUNT], b32 is_hold){ i32 *count; Key_Event_Data *data; if(is_hold){ count = &linuxvars.key_data.hold_count; data = linuxvars.key_data.hold; } else { count = &linuxvars.key_data.press_count; data = linuxvars.key_data.press; } if(*count < KEY_INPUT_BUFFER_SIZE){ data[*count].keycode = code; data[*count].character = chr; data[*count].character_no_caps_lock = chr_nocaps; memcpy(data[*count].modifiers, *mods, sizeof(*mods)); ++(*count); } } internal void LinuxMaximizeWindow(Display* d, Window w, b32 maximize){ //NOTE(inso): this will only work after it is mapped enum { STATE_REMOVE, STATE_ADD, STATE_TOGGLE }; XEvent e = {}; e.xany.type = ClientMessage; e.xclient.message_type = linuxvars.atom_NET_WM_STATE; e.xclient.format = 32; e.xclient.window = w; e.xclient.data.l[0] = maximize ? STATE_ADD : STATE_REMOVE; e.xclient.data.l[1] = linuxvars.atom_NET_WM_STATE_MAXIMIZED_VERT; e.xclient.data.l[2] = linuxvars.atom_NET_WM_STATE_MAXIMIZED_HORZ; e.xclient.data.l[3] = 0L; XSendEvent( d, RootWindow(d, 0), 0, SubstructureNotifyMask | SubstructureRedirectMask, &e ); } #include "linux_icon.h" void LinuxSetIcon(Display* d, Window w){ Atom WM_ICON = XInternAtom(d, "_NET_WM_ICON", False); XChangeProperty( d, w, WM_ICON, XA_CARDINAL, 32, PropModeReplace, (unsigned char*)linux_icon, sizeof(linux_icon) / sizeof(long) ); } int main(int argc, char **argv) { i32 COUNTER = 0; linuxvars = {}; exchange_vars = {}; #if FRED_INTERNAL linuxvars.internal_bubble.next = &linuxvars.internal_bubble; linuxvars.internal_bubble.prev = &linuxvars.internal_bubble; linuxvars.internal_bubble.flags = MEM_BUBBLE_SYS_DEBUG; #endif linuxvars.first = 1; if (!LinuxLoadAppCode()){ // TODO(allen): Failed to load app code, serious problem. return 99; } System_Functions system_; System_Functions *system = &system_; linuxvars.system = system; LinuxLoadSystemCode(); linuxvars.coroutine_free = linuxvars.coroutine_data; for (i32 i = 0; i+1 < ArrayCount(linuxvars.coroutine_data); ++i){ linuxvars.coroutine_data[i].next = linuxvars.coroutine_data + i + 1; } const size_t stack_size = Mbytes(16); for (i32 i = 0; i < ArrayCount(linuxvars.coroutine_data); ++i){ linuxvars.coroutine_data[i].stack.ss_size = stack_size; linuxvars.coroutine_data[i].stack.ss_sp = system_get_memory(stack_size); } memory_vars.vars_memory_size = Mbytes(2); memory_vars.vars_memory = system_get_memory(memory_vars.vars_memory_size); memory_vars.target_memory_size = Mbytes(512); memory_vars.target_memory = system_get_memory(memory_vars.target_memory_size); memory_vars.user_memory_size = Mbytes(2); memory_vars.user_memory = system_get_memory(memory_vars.user_memory_size); String current_directory; i32 curdir_req, curdir_size; char *curdir_mem; curdir_req = (1 << 9); curdir_mem = (char*)system_get_memory(curdir_req); for (; getcwd(curdir_mem, curdir_req) == 0 && curdir_req < (1 << 13);){ system_free_memory(curdir_mem); curdir_req *= 4; curdir_mem = (char*)system_get_memory(curdir_req); } if (curdir_req >= (1 << 13)){ // TODO(allen): bullshit string APIs makin' me pissed return 57; } for (curdir_size = 0; curdir_mem[curdir_size]; ++curdir_size); current_directory = make_string(curdir_mem, curdir_size, curdir_req); Command_Line_Parameters clparams; clparams.argv = argv; clparams.argc = argc; char **files; i32 *file_count; i32 output_size; output_size = linuxvars.app.read_command_line(system, &memory_vars, current_directory, &linuxvars.settings, &files, &file_count, clparams); if (output_size > 0){ // TODO(allen): crt free version fprintf(stdout, "%.*s", output_size, (char*)memory_vars.target_memory); } if (output_size != 0) return 0; sysshared_filter_real_files(files, file_count); linuxvars.XDisplay = XOpenDisplay(0); if(!linuxvars.XDisplay){ fprintf(stderr, "Can't open display!\n"); return 1; } keycode_init(linuxvars.XDisplay); #ifdef FRED_SUPER char *custom_file_default = "./4coder_custom.so"; char *custom_file; if (linuxvars.settings.custom_dll) custom_file = linuxvars.settings.custom_dll; else custom_file = custom_file_default; linuxvars.custom = dlopen(custom_file, RTLD_LAZY); if (!linuxvars.custom && custom_file != custom_file_default){ if (!linuxvars.settings.custom_dll_is_strict){ linuxvars.custom = dlopen(custom_file_default, RTLD_LAZY); } } if (linuxvars.custom){ linuxvars.custom_api.get_alpha_4coder_version = (_Get_Version_Function*) dlsym(linuxvars.custom, "get_alpha_4coder_version"); if (linuxvars.custom_api.get_alpha_4coder_version == 0 || linuxvars.custom_api.get_alpha_4coder_version(MAJOR, MINOR, PATCH) == 0){ fprintf(stderr, "failed to use 4coder_custom.so: version mismatch\n"); } else{ linuxvars.custom_api.get_bindings = (Get_Binding_Data_Function*) dlsym(linuxvars.custom, "get_bindings"); if (linuxvars.custom_api.get_bindings == 0){ fprintf(stderr, "failed to use 4coder_custom.so: get_bindings not exported\n"); } else{ fprintf(stderr, "successfully loaded 4coder_custom.so\n"); } } } #endif if (linuxvars.custom_api.get_bindings == 0){ linuxvars.custom_api.get_bindings = get_bindings; } Thread_Context background[4] = {}; linuxvars.groups[BACKGROUND_THREADS].threads = background; linuxvars.groups[BACKGROUND_THREADS].count = ArrayCount(background); Thread_Memory thread_memory[ArrayCount(background)]; linuxvars.thread_memory = thread_memory; sem_init(&linuxvars.thread_semaphores[BACKGROUND_THREADS], 0, 0); exchange_vars.thread.queues[BACKGROUND_THREADS].semaphore = LinuxSemToHandle(&linuxvars.thread_semaphores[BACKGROUND_THREADS]); for(i32 i = 0; i < linuxvars.groups[BACKGROUND_THREADS].count; ++i){ Thread_Context *thread = linuxvars.groups[BACKGROUND_THREADS].threads + i; thread->id = i + 1; Thread_Memory *memory = linuxvars.thread_memory + i; *memory = {}; memory->id = thread->id; thread->queue = &exchange_vars.thread.queues[BACKGROUND_THREADS]; pthread_create(&thread->handle, NULL, &ThreadProc, thread); } for(i32 i = 0; i < LOCK_COUNT; ++i){ pthread_mutex_init(linuxvars.locks + i, NULL); } #if FRED_USE_FONTCONFIG linuxvars.fontconfig = FcInitLoadConfigAndFonts(); #endif LinuxLoadRenderCode(); linuxvars.target.max = Mbytes(1); linuxvars.target.push_buffer = (byte*)system_get_memory(linuxvars.target.max); File_Slot file_slots[32]; sysshared_init_file_exchange(&exchange_vars, file_slots, ArrayCount(file_slots), 0); Font_Load_Parameters params[8]; sysshared_init_font_params(&linuxvars.fnt, params, ArrayCount(params)); // NOTE(allen): Here begins the linux screen setup stuff. // Behold the true nature of this wonderful OS: // (thanks again to Casey for providing this stuff) Colormap cmap; XSetWindowAttributes swa; int WinWidth, WinHeight; b32 window_setup_success = 0; if (linuxvars.settings.set_window_size){ WinWidth = linuxvars.settings.window_w; WinHeight = linuxvars.settings.window_h; } else { WinWidth = 800; WinHeight = 600; } int XScreenCount = ScreenCount(linuxvars.XDisplay); glx_config_result Config = {}; if(!GLXCanUseFBConfig(linuxvars.XDisplay)){ fprintf(stderr, "Your GLX version is too old.\n"); exit(1); } for(int XScreenIndex = 0; XScreenIndex < XScreenCount; ++XScreenIndex) { Screen *XScreen = ScreenOfDisplay(linuxvars.XDisplay, XScreenIndex); i32 ScrnWidth, ScrnHeight; ScrnWidth = WidthOfScreen(XScreen); ScrnHeight = HeightOfScreen(XScreen); if (ScrnWidth + 50 < WinWidth) WinWidth = ScrnWidth + 50; if (ScrnHeight + 50 < WinHeight) WinHeight = ScrnHeight + 50; Config = ChooseGLXConfig(linuxvars.XDisplay, XScreenIndex); if(Config.Found) { swa.colormap = cmap = XCreateColormap(linuxvars.XDisplay, RootWindow(linuxvars.XDisplay, Config.BestInfo.screen ), Config.BestInfo.visual, AllocNone); swa.background_pixmap = None; swa.border_pixel = 0; swa.event_mask = StructureNotifyMask; linuxvars.XWindow = XCreateWindow(linuxvars.XDisplay, RootWindow(linuxvars.XDisplay, Config.BestInfo.screen), 0, 0, WinWidth, WinHeight, 0, Config.BestInfo.depth, InputOutput, Config.BestInfo.visual, CWBorderPixel|CWColormap|CWEventMask, &swa ); if(linuxvars.XWindow) { window_setup_success = 1; break; } } } if (!window_setup_success){ fprintf(stderr, "Error creating window.\n"); exit(1); } { int scr = DefaultScreen(linuxvars.XDisplay); int dw = DisplayWidth(linuxvars.XDisplay, scr); int dh = DisplayHeight(linuxvars.XDisplay, scr); int dw_mm = DisplayWidthMM(linuxvars.XDisplay, scr); int dh_mm = DisplayHeightMM(linuxvars.XDisplay, scr); if(dw_mm <= 0 || dh_mm <= 0){ linuxvars.target.dpi = 96; } else { int xdpi = dw / (dw_mm / 25.4); int ydpi = dh / (dh_mm / 25.4); fprintf(stderr, "%dx%d - %dmmx%dmm DPI: %dx%d\n", dw, dh, dw_mm, dh_mm, xdpi, ydpi); linuxvars.target.dpi = xdpi > ydpi ? xdpi : ydpi; } } //NOTE(inso): Set the window's type to normal Atom _NET_WM_WINDOW_TYPE = XInternAtom(linuxvars.XDisplay, "_NET_WM_WINDOW_TYPE", False); Atom _NET_WIN_TYPE_NORMAL = XInternAtom(linuxvars.XDisplay, "_NET_WM_WINDOW_TYPE_NORMAL", False); XChangeProperty( linuxvars.XDisplay, linuxvars.XWindow, _NET_WM_WINDOW_TYPE, XA_ATOM, 32, PropModeReplace, (unsigned char*)&_NET_WIN_TYPE_NORMAL, 1 ); //NOTE(inso): window managers want the PID as a window property for some reason. Atom _NET_WM_PID = XInternAtom(linuxvars.XDisplay, "_NET_WM_PID", False); pid_t pid = getpid(); XChangeProperty( linuxvars.XDisplay, linuxvars.XWindow, _NET_WM_PID, XA_CARDINAL, 32, PropModeReplace, (unsigned char*)&pid, 1 ); #define WINDOW_NAME "4coder: " VERSION " linux" //NOTE(inso): set wm properties XStoreName(linuxvars.XDisplay, linuxvars.XWindow, WINDOW_NAME); char* win_name_list[] = { WINDOW_NAME }; XTextProperty win_name; XStringListToTextProperty(win_name_list, 1, &win_name); XSizeHints *sz_hints = XAllocSizeHints(); XWMHints *wm_hints = XAllocWMHints(); XClassHint *cl_hints = XAllocClassHint(); if(linuxvars.settings.set_window_pos){ sz_hints->flags |= USPosition; sz_hints->x = linuxvars.settings.window_x; sz_hints->y = linuxvars.settings.window_y; } wm_hints->flags |= InputHint; wm_hints->input = True; cl_hints->res_name = "4coder"; cl_hints->res_class = "4coder-class"; XSetWMProperties( linuxvars.XDisplay, linuxvars.XWindow, &win_name, NULL, argv, argc, sz_hints, wm_hints, cl_hints ); XFree(sz_hints); XFree(wm_hints); XFree(cl_hints); LinuxSetIcon(linuxvars.XDisplay, linuxvars.XWindow); //NOTE(inso): make the window visible XMapWindow(linuxvars.XDisplay, linuxvars.XWindow); Init_Input_Result input_result = InitializeXInput(linuxvars.XDisplay, linuxvars.XWindow); linuxvars.input_method = input_result.input_method; linuxvars.input_style = input_result.best_style; linuxvars.input_context = input_result.xic; b32 IsLegacy = false; GLXContext GLContext = InitializeOpenGLContext(linuxvars.XDisplay, linuxvars.XWindow, Config.BestConfig, IsLegacy); XWindowAttributes WinAttribs; if(XGetWindowAttributes(linuxvars.XDisplay, linuxvars.XWindow, &WinAttribs)) { WinWidth = WinAttribs.width; WinHeight = WinAttribs.height; } XRaiseWindow(linuxvars.XDisplay, linuxvars.XWindow); XSync(linuxvars.XDisplay, False); if (linuxvars.settings.set_window_pos){ XMoveWindow( linuxvars.XDisplay, linuxvars.XWindow, linuxvars.settings.window_x, linuxvars.settings.window_y ); } Cursor xcursors[APP_MOUSE_CURSOR_COUNT] = { None, XCreateFontCursor(linuxvars.XDisplay, XC_arrow), XCreateFontCursor(linuxvars.XDisplay, XC_xterm), XCreateFontCursor(linuxvars.XDisplay, XC_sb_h_double_arrow), XCreateFontCursor(linuxvars.XDisplay, XC_sb_v_double_arrow) }; XSetICFocus(linuxvars.input_context); linuxvars.atom_CLIPBOARD = XInternAtom(linuxvars.XDisplay, "CLIPBOARD", False); linuxvars.atom_UTF8_STRING = XInternAtom(linuxvars.XDisplay, "UTF8_STRING", False); linuxvars.atom_NET_WM_STATE = XInternAtom(linuxvars.XDisplay, "_NET_WM_STATE", False); linuxvars.atom_NET_WM_STATE_MAXIMIZED_HORZ = XInternAtom(linuxvars.XDisplay, "_NET_WM_STATE_MAXIMIZED_HORZ", False); linuxvars.atom_NET_WM_STATE_MAXIMIZED_VERT = XInternAtom(linuxvars.XDisplay, "_NET_WM_STATE_MAXIMIZED_VERT", False); if (linuxvars.settings.maximize_window){ LinuxMaximizeWindow(linuxvars.XDisplay, linuxvars.XWindow, 1); } int xfixes_version_unused, xfixes_err_unused; linuxvars.has_xfixes = XQueryExtension( linuxvars.XDisplay, "XFIXES", &xfixes_version_unused, &linuxvars.xfixes_selection_event, &xfixes_err_unused ) == True; if(linuxvars.has_xfixes){ XFixesSelectSelectionInput( linuxvars.XDisplay, linuxvars.XWindow, linuxvars.atom_CLIPBOARD, XFixesSetSelectionOwnerNotifyMask ); } Atom WM_DELETE_WINDOW = XInternAtom(linuxvars.XDisplay, "WM_DELETE_WINDOW", False); Atom _NET_WM_PING = XInternAtom(linuxvars.XDisplay, "_NET_WM_PING", False); Atom wm_protos[] = { WM_DELETE_WINDOW, _NET_WM_PING }; XSetWMProtocols(linuxvars.XDisplay, linuxvars.XWindow, wm_protos, 2); linuxvars.app.init(linuxvars.system, &linuxvars.target, &memory_vars, &exchange_vars, linuxvars.clipboard_contents, current_directory, linuxvars.custom_api); LinuxResizeTarget(WinWidth, WinHeight); b32 keep_running = 1; while(1) { XEvent PrevEvent = {}; while(XPending(linuxvars.XDisplay)) { XEvent Event; XNextEvent(linuxvars.XDisplay, &Event); if (XFilterEvent(&Event, None) == True){ continue; } switch (Event.type){ case KeyPress: { b32 is_hold = PrevEvent.type == KeyRelease && PrevEvent.xkey.time == Event.xkey.time && PrevEvent.xkey.keycode == Event.xkey.keycode; b8 mods[MDFR_INDEX_COUNT] = {}; if(Event.xkey.state & ShiftMask) mods[MDFR_SHIFT_INDEX] = 1; if(Event.xkey.state & ControlMask) mods[MDFR_CONTROL_INDEX] = 1; if(Event.xkey.state & LockMask) mods[MDFR_CAPS_INDEX] = 1; if(Event.xkey.state & Mod1Mask) mods[MDFR_ALT_INDEX] = 1; // NOTE(inso): mod5 == AltGr // if(Event.xkey.state & Mod5Mask) mods[MDFR_ALT_INDEX] = 1; KeySym keysym = NoSymbol; char buff[32], no_caps_buff[32]; // NOTE(inso): Turn ControlMask off like the win32 code does. if(mods[MDFR_CONTROL_INDEX] && !mods[MDFR_ALT_INDEX]){ Event.xkey.state &= ~(ControlMask); } // TODO(inso): Use one of the Xutf8LookupString funcs to allow for non-ascii chars XLookupString(&Event.xkey, buff, sizeof(buff), &keysym, NULL); Event.xkey.state &= ~LockMask; XLookupString(&Event.xkey, no_caps_buff, sizeof(no_caps_buff), NULL, NULL); u8 key = keycode_lookup(Event.xkey.keycode); if(key){ push_key(key, 0, 0, &mods, is_hold); } else { key = buff[0] & 0xFF; if(key < 128){ u8 no_caps_key = no_caps_buff[0] & 0xFF; if(key == '\r') key = '\n'; if(no_caps_key == '\r') no_caps_key = '\n'; push_key(key, key, no_caps_key, &mods, is_hold); } else { push_key(0, 0, 0, &mods, is_hold); } } }break; case MotionNotify: { linuxvars.mouse_data.x = Event.xmotion.x; linuxvars.mouse_data.y = Event.xmotion.y; }break; case ButtonPress: { switch(Event.xbutton.button){ case Button1: { linuxvars.mouse_data.press_l = 1; linuxvars.mouse_data.l = 1; } break; case Button3: { linuxvars.mouse_data.press_r = 1; linuxvars.mouse_data.r = 1; } break; //NOTE(inso): scroll up case Button4: { linuxvars.mouse_data.wheel = 1; }break; //NOTE(inso): scroll down case Button5: { linuxvars.mouse_data.wheel = -1; }break; } }break; case ButtonRelease: { switch(Event.xbutton.button){ case Button1: { linuxvars.mouse_data.release_l = 1; linuxvars.mouse_data.l = 0; } break; case Button3: { linuxvars.mouse_data.release_r = 1; linuxvars.mouse_data.r = 0; } break; } }break; case EnterNotify: { linuxvars.mouse_data.out_of_window = 0; }break; case LeaveNotify: { linuxvars.mouse_data.out_of_window = 1; }break; case FocusIn: case FocusOut: { linuxvars.mouse_data.l = 0; linuxvars.mouse_data.r = 0; }break; case ConfigureNotify: { i32 w = Event.xconfigure.width, h = Event.xconfigure.height; if(w != linuxvars.target.width || h != linuxvars.target.height){ LinuxResizeTarget(Event.xconfigure.width, Event.xconfigure.height); } }break; case MappingNotify: { if(Event.xmapping.request == MappingModifier || Event.xmapping.request == MappingKeyboard){ XRefreshKeyboardMapping(&Event.xmapping); keycode_init(linuxvars.XDisplay); } }break; case ClientMessage: { if ((Atom)Event.xclient.data.l[0] == WM_DELETE_WINDOW) { keep_running = 0; } else if ((Atom)Event.xclient.data.l[0] == _NET_WM_PING) { Event.xclient.window = DefaultRootWindow(linuxvars.XDisplay); XSendEvent( linuxvars.XDisplay, Event.xclient.window, False, SubstructureRedirectMask | SubstructureNotifyMask, &Event ); } }break; // NOTE(inso): Someone wants us to give them the clipboard data. case SelectionRequest: { XSelectionRequestEvent request = Event.xselectionrequest; XSelectionEvent response = {}; response.type = SelectionNotify; response.requestor = request.requestor; response.selection = request.selection; response.target = request.target; response.time = request.time; response.property = None; //TODO(inso): handle TARGETS negotiation instead of requiring UTF8_STRING if ( linuxvars.clipboard_outgoing.size && request.target == linuxvars.atom_UTF8_STRING && request.selection == linuxvars.atom_CLIPBOARD && request.property != None && request.display && request.requestor ){ XChangeProperty( request.display, request.requestor, request.property, request.target, 8, PropModeReplace, (unsigned char*)linuxvars.clipboard_outgoing.str, linuxvars.clipboard_outgoing.size ); response.property = request.property; } XSendEvent(request.display, request.requestor, True, 0, (XEvent*)&response); }break; // NOTE(inso): Another program is now the clipboard owner. case SelectionClear: { if(Event.xselectionclear.selection == linuxvars.atom_CLIPBOARD){ linuxvars.clipboard_outgoing.size = 0; } }break; // NOTE(inso): A program is giving us the clipboard data we asked for. case SelectionNotify: { XSelectionEvent* e = (XSelectionEvent*)&Event; if( e->selection == linuxvars.atom_CLIPBOARD && e->target == linuxvars.atom_UTF8_STRING && e->property != None ){ Atom type; int fmt; unsigned long nitems, bytes_left; u8 *data; int result = XGetWindowProperty( linuxvars.XDisplay, linuxvars.XWindow, linuxvars.atom_CLIPBOARD, 0L, LINUX_MAX_PASTE_CHARS/4L, False, linuxvars.atom_UTF8_STRING, &type, &fmt, &nitems, &bytes_left, &data ); if(result == Success && fmt == 8){ LinuxStringDup(&linuxvars.clipboard_contents, data, nitems); XFree(data); } } }break; case Expose: case VisibilityNotify: { linuxvars.redraw = 1; }break; default: { if(Event.type == linuxvars.xfixes_selection_event){ XConvertSelection( linuxvars.XDisplay, linuxvars.atom_CLIPBOARD, linuxvars.atom_UTF8_STRING, linuxvars.atom_CLIPBOARD, linuxvars.XWindow, CurrentTime ); } }break; } PrevEvent = Event; } // NOTE(inso): without the xfixes extension we'll have to request the clipboard every frame. // also, always get it on the first frame. if(linuxvars.first || !linuxvars.has_xfixes){ XConvertSelection( linuxvars.XDisplay, linuxvars.atom_CLIPBOARD, linuxvars.atom_UTF8_STRING, linuxvars.atom_CLIPBOARD, linuxvars.XWindow, CurrentTime ); } Key_Input_Data input_data; Mouse_State mouse; Application_Step_Result result; input_data = linuxvars.key_data; mouse = linuxvars.mouse_data; result.mouse_cursor_type = APP_MOUSE_CURSOR_DEFAULT; if(__sync_bool_compare_and_swap(&exchange_vars.thread.force_redraw, 1, 0)){ linuxvars.redraw = 1; } result.redraw = linuxvars.redraw; result.lctrl_lalt_is_altgr = 0; result.trying_to_kill = !keep_running; result.perform_kill = 0; u64 start_time = system_time(); linuxvars.app.step(linuxvars.system, &input_data, &mouse, &linuxvars.target, &memory_vars, &exchange_vars, linuxvars.clipboard_contents, 1, linuxvars.first, linuxvars.redraw, &result); if(result.perform_kill){ break; } else { keep_running = 1; } if (linuxvars.redraw || result.redraw){ LinuxRedrawTarget(); } u64 time_diff = system_time() - start_time; if(time_diff < frame_useconds){ usleep(frame_useconds - time_diff); } if(result.mouse_cursor_type != linuxvars.cursor){ Cursor c = xcursors[result.mouse_cursor_type]; XDefineCursor(linuxvars.XDisplay, linuxvars.XWindow, c); linuxvars.cursor = result.mouse_cursor_type; } linuxvars.first = 0; linuxvars.redraw = 0; linuxvars.key_data = {}; linuxvars.mouse_data.press_l = 0; linuxvars.mouse_data.release_l = 0; linuxvars.mouse_data.press_r = 0; linuxvars.mouse_data.release_r = 0; linuxvars.mouse_data.wheel = 0; ProfileStart(OS_file_process); { File_Slot *file; int d = 0; for (file = exchange_vars.file.active.next; file != &exchange_vars.file.active; file = file->next){ ++d; if (file->flags & FEx_Save){ Assert((file->flags & FEx_Request) == 0); file->flags &= (~FEx_Save); if (system_save_file(file->filename, (char*)file->data, file->size)){ file->flags |= FEx_Save_Complete; } else{ file->flags |= FEx_Save_Failed; } } if (file->flags & FEx_Request){ Assert((file->flags & FEx_Save) == 0); file->flags &= (~FEx_Request); Data sysfile = system_load_file(file->filename); if (sysfile.data == 0){ file->flags |= FEx_Not_Exist; } else{ file->flags |= FEx_Ready; file->data = sysfile.data; file->size = sysfile.size; } } } Assert(d == exchange_vars.file.num_active); for (file = exchange_vars.file.free_list.next; file != &exchange_vars.file.free_list; file = file->next){ if (file->data){ system_free_memory(file->data); } } if (exchange_vars.file.free_list.next != &exchange_vars.file.free_list){ ex__insert_range(exchange_vars.file.free_list.next, exchange_vars.file.free_list.prev, &exchange_vars.file.available); } ex__check(&exchange_vars.file); } ProfileEnd(OS_file_process); } return 0; } // BOTTOM