implement stdin_support for Windows

This commit is contained in:
Matthias Ringwald 2016-11-30 15:27:50 +01:00
parent 61dbb0731d
commit 5ea446fa57

View File

@ -44,52 +44,34 @@
#include "stdin_support.h"
#ifndef _WIN32
// From MSDN:
// __WIN32 Defined as 1 when the compilation target is 32-bit ARM, 64-bit ARM, x86, or x64.
// Otherwise, undefined.
#ifdef _WIN32
#include <Windows.h>
#include <conio.h> //provides non standard getch() function
#include <signal.h>
#else
#include <termios.h>
#endif
static btstack_data_source_t stdin_source;
static int activated = 0;
void btstack_stdin_setup(void (*stdin_process)(btstack_data_source_t *_ds, btstack_data_source_callback_type_t callback_type)){
#ifdef _WIN32
static HANDLE stdin_reader_thread_handle;
static char key_read_buffer;
static HANDLE key_processed_handle;
#ifndef _WIN32
struct termios term = {0};
if (tcgetattr(0, &term) < 0)
perror("tcsetattr()");
term.c_lflag &= ~ICANON;
term.c_lflag &= ~ECHO;
if (tcsetattr(0, TCSANOW, &term) < 0) {
perror("tcsetattr ICANON");
static WINAPI DWORD stdin_reader_thread_process(void * p){
while (1){
key_read_buffer = getch();
SignalObjectAndWait(stdin_source.handle , key_processed_handle, INFINITE, FALSE);
}
#endif
btstack_run_loop_set_data_source_fd(&stdin_source, 0); // stdin
btstack_run_loop_set_data_source_handler(&stdin_source, stdin_process);
btstack_run_loop_enable_data_source_callbacks(&stdin_source, DATA_SOURCE_CALLBACK_READ);
btstack_run_loop_add_data_source(&stdin_source);
activated = 1;
return 0;
}
void btstack_stdin_reset(void){
if (!activated) return;
activated = 0;
btstack_run_loop_remove_data_source(&stdin_source);
#ifndef _WIN32
struct termios term = {0};
if (tcgetattr(0, &term) < 0){
perror("tcsetattr()");
}
term.c_lflag |= ICANON;
term.c_lflag |= ECHO;
if (tcsetattr(0, TCSANOW, &term) < 0){
perror("tcsetattr ICANON");
}
#endif
}
#if 0
static int getstring(char *line, int size)
@ -114,10 +96,87 @@ static int getstring(char *line, int size)
}
#endif
// read single byte after data source callback was triggered
char btstack_stdin_read(void){
char buffer;
read(stdin_source.fd, &buffer, 1);
return buffer;
void btstack_stdin_setup(void (*stdin_process)(btstack_data_source_t *_ds, btstack_data_source_callback_type_t callback_type)){
if (activated) return;
#ifdef _WIN32
// asynchronous io on stdin via OVERLAPPED seems to be problematic.
// Use separate thread and event objects instead
stdin_source.handle = CreateEvent(NULL, FALSE, FALSE, NULL);
key_processed_handle = CreateEvent(NULL, FALSE, FALSE, NULL);
// default attributes, default stack size, proc, args, start immediately, don't care for thread id
stdin_reader_thread_handle = CreateThread(NULL, 0, &stdin_reader_thread_process, NULL, 0, NULL);
#else
// disable line buffering
struct termios term = {0};
if (tcgetattr(0, &term) < 0)
perror("tcsetattr()");
term.c_lflag &= ~ICANON;
term.c_lflag &= ~ECHO;
if (tcsetattr(0, TCSANOW, &term) < 0) {
perror("tcsetattr ICANON");
}
btstack_run_loop_set_data_source_fd(&stdin_source, 0); // stdin
#endif
btstack_run_loop_enable_data_source_callbacks(&stdin_source, DATA_SOURCE_CALLBACK_READ);
btstack_run_loop_set_data_source_handler(&stdin_source, stdin_process);
btstack_run_loop_add_data_source(&stdin_source);
activated = 1;
}
void btstack_stdin_reset(void){
if (!activated) return;
activated = 0;
btstack_run_loop_remove_data_source(&stdin_source);
#ifdef _WIN32
// shutdown thread
TerminateThread(stdin_reader_thread_handle, 0);
WaitForSingleObject(stdin_reader_thread_handle, INFINITE);
CloseHandle(stdin_reader_thread_handle);
// free events
CloseHandle(stdin_source.handle);
CloseHandle(key_processed_handle);
#else
struct termios term = {0};
if (tcgetattr(0, &term) < 0){
perror("tcsetattr()");
}
term.c_lflag |= ICANON;
term.c_lflag |= ECHO;
if (tcsetattr(0, TCSANOW, &term) < 0){
perror("tcsetattr ICANON");
}
#endif
}
// read single byte after data source callback was triggered
char btstack_stdin_read(void){
char data;
#ifdef _WIN32
// raise SIGINT for CTRL-c on main thread
if (key_read_buffer == 0x03){
raise(SIGINT);
return 0;
}
data = key_read_buffer;
SetEvent(key_processed_handle);
#else
read(stdin_source.fd, &data, 1);
#endif
return data;
}