Mercurial > repos > blastem
comparison termhelper.c @ 794:792be135d3af
Spawn a terminal for the debugger when needed if we are not already attached to one
author | Michael Pavone <pavone@retrodev.com> |
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date | Sun, 26 Jul 2015 01:11:04 -0700 |
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793:9aff36a172b2 | 794:792be135d3af |
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1 #include <sys/types.h> | |
2 #include <sys/stat.h> | |
3 #include <fcntl.h> | |
4 #include <unistd.h> | |
5 #include <stdlib.h> | |
6 #include "terminal.h" | |
7 | |
8 char buf[4096]; | |
9 | |
10 void copy_data(int to, int from) | |
11 { | |
12 ssize_t bytes = read(from, buf, sizeof(buf)); | |
13 while (bytes > 0) | |
14 { | |
15 ssize_t written = write(to, buf, bytes); | |
16 if (written == -1) { | |
17 exit(1); | |
18 } | |
19 bytes -= written; | |
20 } | |
21 } | |
22 | |
23 int main(int argc, char **argv) | |
24 { | |
25 //these will block so order is important | |
26 int input_fd = open(INPUT_PATH, O_WRONLY); | |
27 int output_fd = open(OUTPUT_PATH, O_RDONLY); | |
28 fd_set read_fds; | |
29 FD_ZERO(&read_fds); | |
30 for (;;) | |
31 { | |
32 FD_SET(STDIN_FILENO, &read_fds); | |
33 FD_SET(output_fd, &read_fds); | |
34 select(output_fd+1, &read_fds, NULL, NULL, NULL); | |
35 | |
36 if (FD_ISSET(STDIN_FILENO, &read_fds)) { | |
37 copy_data(input_fd, STDIN_FILENO); | |
38 } | |
39 if (FD_ISSET(output_fd, &read_fds)) { | |
40 copy_data(STDOUT_FILENO, output_fd); | |
41 } | |
42 } | |
43 return 0; | |
44 } |