1 /* 2 * Copyright (C) 2014 BlueKitchen GmbH 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. Neither the name of the copyright holders nor the names of 14 * contributors may be used to endorse or promote products derived 15 * from this software without specific prior written permission. 16 * 4. Any redistribution, use, or modification is done solely for 17 * personal benefit and not for any commercial purpose or for 18 * monetary gain. 19 * 20 * THIS SOFTWARE IS PROVIDED BY BLUEKITCHEN GMBH AND CONTRIBUTORS 21 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 22 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 23 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL MATTHIAS 24 * RINGWALD OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 25 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 26 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS 27 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 28 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 29 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF 30 * THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 * 33 * Please inquire about commercial licensing options at 34 * [email protected] 35 * 36 */ 37 38 #define BTSTACK_FILE__ "btstack_stdin_windows.c" 39 40 #include <errno.h> 41 #include <stdio.h> 42 43 #include "btstack_run_loop.h" 44 #include "btstack_defines.h" 45 #include <stdlib.h> 46 47 #include "btstack_stdin.h" 48 49 // From MSDN: 50 // __WIN32 Defined as 1 when the compilation target is 32-bit ARM, 64-bit ARM, x86, or x64. 51 // Otherwise, undefined. 52 53 #include <Windows.h> 54 #include <conio.h> //provides non standard getch() function 55 #include <signal.h> 56 57 static btstack_data_source_t stdin_source; 58 static int activated = 0; 59 60 static HANDLE stdin_reader_thread_handle; 61 static char key_read_buffer; 62 static HANDLE key_processed_handle; 63 static void (*stdin_handler)(char c); 64 65 static WINAPI DWORD stdin_reader_thread_process(void * p){ 66 while (1){ 67 key_read_buffer = getch(); 68 SignalObjectAndWait(stdin_source.source.handle, key_processed_handle, INFINITE, FALSE); 69 } 70 return 0; 71 } 72 73 static void stdin_process(btstack_data_source_t *ds, btstack_data_source_callback_type_t callback_type){ 74 75 // raise SIGINT for CTRL-c on main thread 76 if (key_read_buffer == 0x03){ 77 raise(SIGINT); 78 return; 79 } 80 81 SetEvent(key_processed_handle); 82 83 if (stdin_handler){ 84 (*stdin_handler)(key_read_buffer); 85 } 86 } 87 88 void btstack_stdin_setup(void (*handler)(char c)){ 89 90 if (activated) return; 91 92 93 stdin_handler = handler; 94 95 // asynchronous io on stdin via OVERLAPPED seems to be problematic. 96 97 // Use separate thread and event objects instead 98 stdin_source.source.handle = CreateEvent(NULL, FALSE, FALSE, NULL); 99 key_processed_handle = CreateEvent(NULL, FALSE, FALSE, NULL); 100 // default attributes, default stack size, proc, args, start immediately, don't care for thread id 101 stdin_reader_thread_handle = CreateThread(NULL, 0, &stdin_reader_thread_process, NULL, 0, NULL); 102 103 btstack_run_loop_enable_data_source_callbacks(&stdin_source, DATA_SOURCE_CALLBACK_READ); 104 btstack_run_loop_set_data_source_handler(&stdin_source, stdin_process); 105 btstack_run_loop_add_data_source(&stdin_source); 106 107 activated = 1; 108 } 109 110 void btstack_stdin_reset(void){ 111 if (!activated) return; 112 activated = 0; 113 stdin_handler = NULL; 114 115 btstack_run_loop_remove_data_source(&stdin_source); 116 117 // shutdown thread 118 TerminateThread(stdin_reader_thread_handle, 0); 119 WaitForSingleObject(stdin_reader_thread_handle, INFINITE); 120 CloseHandle(stdin_reader_thread_handle); 121 122 // free events 123 CloseHandle(stdin_source.source.handle); 124 CloseHandle(key_processed_handle); 125 } 126 127